/* roulang page: index */
:root {
            --primary: #FF6B35;
            --primary-hover: #EA580C;
            --primary-light: rgba(255, 107, 53, 0.10);
            --primary-glow: rgba(255, 107, 53, 0.30);
            --secondary: #1E293B;
            --bg: #F8FAFC;
            --surface: #FFFFFF;
            --accent: #0EA5E9;
            --accent-hover: #0284C7;
            --success: #10B981;
            --warning: #F59E0B;
            --text: #334155;
            --text-muted: #475569;
            --text-light: #64748B;
            --border: #E2E8F0;
            --border-focus: #CBD5E1;
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-sm: 6px;
            --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.10), 0 4px 6px -4px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 40px -8px rgba(0, 0, 0, 0.12);
            --font-stack: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 1rem;
            }
        }

        /* Header & Navigation */
        .site-header {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
        }
        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 0;
            border-bottom: 1px solid var(--border);
        }
        .brand-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }
        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .brand-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .search-trigger {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            transition: all var(--transition-fast);
            font-size: 1rem;
        }
        .search-trigger:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .channel-row {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            padding: 0.5rem 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .channel-row::-webkit-scrollbar {
            display: none;
        }
        .channel-link {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 1rem;
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: 999px;
            white-space: nowrap;
            transition: all var(--transition-fast);
            position: relative;
        }
        .channel-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .channel-link.active {
            color: var(--primary);
            font-weight: 600;
            background: var(--primary-light);
        }
        .channel-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        /* Hamburger */
        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            padding: 8px;
            background: var(--bg);
            border-radius: var(--radius-sm);
            z-index: 1001;
            position: relative;
        }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--secondary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }
        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--surface);
            z-index: 999;
            padding: 5rem 1.5rem 2rem;
            flex-direction: column;
            gap: 0.5rem;
            overflow-y: auto;
        }
        .mobile-nav.open {
            display: flex;
        }
        .mobile-nav .channel-link {
            font-size: 1.1rem;
            padding: 0.75rem 1rem;
            border-radius: var(--radius-md);
            display: block;
        }

        @media (max-width: 768px) {
            .channel-row {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .brand-row {
                border-bottom: none;
            }
        }

        /* Section spacing */
        .section {
            padding: 3.5rem 0;
        }
        @media (max-width: 768px) {
            .section {
                padding: 2.5rem 0;
            }
        }
        .section-alt {
            background: var(--surface);
        }
        .section-deep {
            background: var(--secondary);
            color: #E2E8F0;
        }
        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 0.75rem;
            letter-spacing: -0.02em;
            line-height: 1.3;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            margin-bottom: 2rem;
            max-width: 640px;
            line-height: 1.7;
        }
        .section-deep .section-title {
            color: #FFFFFF;
        }
        .section-deep .section-subtitle {
            color: #CBD5E1;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.7rem 1.5rem;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(255, 107, 53, 0.25);
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.35);
            transform: translateY(-1px);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 2px 8px rgba(14, 165, 233, 0.25);
        }
        .btn-accent:hover {
            background: var(--accent-hover);
            box-shadow: 0 4px 14px rgba(14, 165, 233, 0.35);
            transform: translateY(-1px);
        }
        .btn-lg {
            padding: 0.85rem 2rem;
            font-size: 1.05rem;
            border-radius: var(--radius-lg);
        }
        .btn-sm {
            padding: 0.45rem 1rem;
            font-size: 0.85rem;
            border-radius: var(--radius-sm);
        }

        /* Cards */
        .card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 1.5rem;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: var(--primary);
        }
        .card-interactive {
            cursor: pointer;
        }

        /* Badge / Tag */
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 0.3rem 0.75rem;
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: 999px;
            letter-spacing: 0.02em;
        }
        .badge-primary {
            background: var(--primary-light);
            color: var(--primary);
        }
        .badge-accent {
            background: rgba(14, 165, 233, 0.1);
            color: var(--accent);
        }
        .badge-success {
            background: rgba(16, 185, 129, 0.1);
            color: var(--success);
        }
        .badge-warning {
            background: rgba(245, 158, 11, 0.1);
            color: var(--warning);
        }

        /* Hero */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, #1E293B 0%, #0F172A 50%, #1E293B 100%);
            color: #fff;
            padding: 5rem 0;
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 55%;
            height: 100%;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.35;
            mask-image: linear-gradient(to left, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0) 100%);
            -webkit-mask-image: linear-gradient(to left, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 600px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.4rem 1rem;
            background: rgba(255, 107, 53, 0.2);
            border: 1px solid rgba(255, 107, 53, 0.4);
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 500;
            color: #FFB088;
            margin-bottom: 1.25rem;
            letter-spacing: 0.02em;
        }
        .hero-badge .dot {
            width: 8px;
            height: 8px;
            background: var(--primary);
            border-radius: 50%;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(255, 107, 53, 0.6);
            }
            50% {
                box-shadow: 0 0 0 10px rgba(255, 107, 53, 0);
            }
        }
        .hero-title {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.03em;
            margin-bottom: 1rem;
        }
        .hero-title .highlight {
            color: var(--primary);
            position: relative;
        }
        .hero-desc {
            font-size: 1.1rem;
            line-height: 1.7;
            color: #CBD5E1;
            margin-bottom: 1.75rem;
            max-width: 500px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            align-items: center;
        }
        .hero-demo-area {
            position: relative;
            z-index: 2;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            backdrop-filter: blur(10px);
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            min-width: 260px;
        }
        .hero-demo-area .demo-stat {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .hero-demo-area .demo-stat .stat-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: rgba(255, 107, 53, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .hero-demo-area .demo-stat .stat-num {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
        }
        .hero-demo-area .demo-stat .stat-label {
            font-size: 0.8rem;
            color: #94A3B8;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 3rem 0;
                min-height: auto;
            }
            .hero-section::before {
                width: 100%;
                opacity: 0.2;
                mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.3) 0%, rgba(0, 0, 0, 0) 100%);
                -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.3) 0%, rgba(0, 0, 0, 0) 100%);
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .hero-demo-area {
                margin-top: 1.5rem;
                min-width: auto;
            }
        }

        /* Metrics */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }
        @media (max-width: 768px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 0.75rem;
            }
        }
        .metric-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            text-align: center;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--primary);
            border-radius: 0 0 3px 3px;
            transform: scaleX(0);
            transition: transform var(--transition-smooth);
        }
        .metric-card:hover::before {
            transform: scaleX(1);
        }
        .metric-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .metric-num {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
            line-height: 1;
        }
        .metric-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 0.4rem;
        }

        /* Service grid - asymmetric */
        .service-asymmetric {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            grid-template-rows: auto auto;
            gap: 1.25rem;
        }
        .service-asymmetric .service-card:nth-child(1) {
            grid-column: span 2;
            grid-row: span 1;
        }
        .service-asymmetric .service-card:nth-child(2) {
            grid-column: span 1;
            grid-row: span 2;
        }
        .service-asymmetric .service-card:nth-child(3) {
            grid-column: span 1;
            grid-row: span 1;
        }
        .service-asymmetric .service-card:nth-child(4) {
            grid-column: span 1;
            grid-row: span 1;
        }
        @media (max-width: 768px) {
            .service-asymmetric {
                grid-template-columns: 1fr;
                grid-template-rows: auto;
            }
            .service-asymmetric .service-card:nth-child(1),
            .service-asymmetric .service-card:nth-child(2),
            .service-asymmetric .service-card:nth-child(3),
            .service-asymmetric .service-card:nth-child(4) {
                grid-column: span 1;
                grid-row: span 1;
            }
        }
        .service-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 1.75rem;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            position: relative;
        }
        .service-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: var(--primary);
        }
        .service-card .svc-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.3rem;
            flex-shrink: 0;
        }
        .service-card .svc-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--secondary);
            letter-spacing: -0.01em;
        }
        .service-card .svc-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Scene demo */
        .scene-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            align-items: center;
        }
        @media (max-width: 768px) {
            .scene-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }
        .scene-steps {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
        }
        .scene-step {
            display: flex;
            gap: 1rem;
            align-items: flex-start;
            padding: 1rem;
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            border-left: 3px solid transparent;
        }
        .scene-step:hover {
            background: var(--primary-light);
            border-left-color: var(--primary);
        }
        .scene-step .step-num {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .scene-step .step-info h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 0.25rem;
        }
        .scene-step .step-info p {
            font-size: 0.875rem;
            color: var(--text-muted);
            line-height: 1.5;
        }
        .scene-image-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .scene-image-wrap img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .scene-image-wrap .scene-tag {
            position: absolute;
            bottom: 1rem;
            left: 1rem;
            background: rgba(0, 0, 0, 0.7);
            color: #fff;
            padding: 0.4rem 0.9rem;
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 500;
            backdrop-filter: blur(6px);
        }

        /* Hot list */
        .hot-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
        }
        @media (max-width: 768px) {
            .hot-list {
                grid-template-columns: 1fr;
            }
        }
        .hot-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 1rem 1.25rem;
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-card);
        }
        .hot-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-hover);
            transform: translateX(3px);
        }
        .hot-rank {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .hot-rank.top {
            background: var(--primary);
            color: #fff;
        }
        .hot-info h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--secondary);
        }
        .hot-info p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* Brand intro */
        .brand-intro-grid {
            display: grid;
            grid-template-columns: 1fr 1.3fr;
            gap: 2.5rem;
            align-items: center;
        }
        @media (max-width: 768px) {
            .brand-intro-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }
        .brand-intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .brand-intro-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .brand-intro-text h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
        }
        .brand-intro-text p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 0.75rem;
        }

        /* Comparison */
        .compare-table-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
        }
        .compare-table th,
        .compare-table td {
            padding: 1rem 1.25rem;
            text-align: left;
            font-size: 0.9rem;
        }
        .compare-table th {
            background: var(--secondary);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
        }
        .compare-table tr:nth-child(even) td {
            background: #F1F5F9;
        }
        .compare-table tr:nth-child(odd) td {
            background: #fff;
        }
        .compare-table .icon-check {
            color: var(--success);
            font-size: 1.1rem;
        }
        .compare-table .icon-cross {
            color: #EF4444;
            font-size: 1.1rem;
        }
        .compare-table .highlight-col {
            background: rgba(255, 107, 53, 0.04) !important;
            font-weight: 600;
        }

        /* Reviews */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.25rem;
        }
        @media (max-width: 768px) {
            .reviews-grid {
                grid-template-columns: 1fr;
            }
        }
        .review-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
        }
        .review-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .review-stars {
            color: #F59E0B;
            font-size: 0.9rem;
            margin-bottom: 0.5rem;
            letter-spacing: 2px;
        }
        .review-text {
            font-size: 0.9rem;
            color: var(--text);
            line-height: 1.6;
            margin-bottom: 0.75rem;
        }
        .review-author {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* News */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .news-item {
            display: flex;
            gap: 1.25rem;
            align-items: flex-start;
            padding: 1rem 1.25rem;
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-card);
        }
        .news-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-hover);
        }
        .news-item.featured {
            flex-direction: column;
            gap: 0.75rem;
            background: var(--secondary);
            color: #fff;
            border-color: var(--secondary);
        }
        .news-item.featured .news-date {
            color: #FFB088;
        }
        .news-item.featured .news-title {
            color: #fff;
            font-size: 1.2rem;
        }
        .news-item.featured .news-summary {
            color: #CBD5E1;
        }
        .news-date {
            font-size: 0.85rem;
            color: var(--text-light);
            font-weight: 500;
            white-space: nowrap;
            flex-shrink: 0;
            min-width: 90px;
        }
        .news-content {
            flex: 1;
            min-width: 0;
        }
        .news-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 0.3rem;
            line-height: 1.4;
        }
        .news-summary {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
            margin-bottom: 0.4rem;
        }
        .news-link {
            font-size: 0.85rem;
            color: var(--accent);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            transition: all var(--transition-fast);
        }
        .news-link:hover {
            color: var(--accent-hover);
            gap: 0.5rem;
        }
        @media (max-width: 768px) {
            .news-item {
                flex-direction: column;
                gap: 0.5rem;
            }
            .news-date {
                min-width: auto;
            }
        }

        /* Package */
        .package-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            align-items: stretch;
        }
        @media (max-width: 768px) {
            .package-grid {
                grid-template-columns: 1fr;
                max-width: 400px;
                margin: 0 auto;
            }
        }
        .package-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 2rem 1.5rem;
            border: 2px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
            gap: 1rem;
            text-align: center;
            position: relative;
        }
        .package-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .package-card.featured {
            border-color: var(--primary);
            box-shadow: var(--shadow-lg);
            transform: scale(1.03);
            z-index: 2;
            background: #FFFBF8;
        }
        .package-card.featured:hover {
            transform: scale(1.03) translateY(-3px);
        }
        .package-card .pkg-badge {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary);
            color: #fff;
            padding: 0.35rem 1.25rem;
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 700;
            white-space: nowrap;
        }
        .package-card .pkg-name {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--secondary);
        }
        .package-card .pkg-price {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
        }
        .package-card .pkg-price span {
            font-size: 0.9rem;
            font-weight: 400;
            color: var(--text-muted);
        }
        .package-card .pkg-features {
            list-style: none;
            text-align: left;
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 2;
        }
        .package-card .pkg-features li::before {
            content: '✓ ';
            color: var(--success);
            font-weight: 700;
        }
        @media (max-width: 768px) {
            .package-card.featured {
                transform: scale(1);
            }
            .package-card.featured:hover {
                transform: scale(1) translateY(-3px);
            }
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1rem 1.25rem;
            background: transparent;
            font-size: 1rem;
            font-weight: 600;
            color: var(--secondary);
            text-align: left;
            gap: 0.75rem;
            transition: all var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            flex-shrink: 0;
            transition: all var(--transition-fast);
        }
        .faq-item.open .faq-question {
            color: var(--primary);
            background: #FFFBF8;
        }
        .faq-item.open .faq-icon {
            background: var(--primary);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            padding: 0 1.25rem;
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            background: #F8FAFC;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0.75rem 1.25rem 1.25rem;
        }

        /* Form */
        .form-section-wrap {
            background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            color: #fff;
            box-shadow: var(--shadow-lg);
        }
        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
        }
        @media (max-width: 768px) {
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-section-wrap {
                padding: 1.5rem;
            }
        }
        .form-input {
            width: 100%;
            height: 48px;
            padding: 0 1rem;
            border-radius: var(--radius-sm);
            border: 2px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
        }
        .form-input::placeholder {
            color: #94A3B8;
        }
        .form-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px var(--primary-glow);
            background: rgba(255, 255, 255, 0.12);
        }
        .form-textarea {
            width: 100%;
            min-height: 100px;
            padding: 0.75rem 1rem;
            border-radius: var(--radius-sm);
            border: 2px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            font-size: 0.95rem;
            resize: vertical;
            transition: all var(--transition-fast);
        }
        .form-textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px var(--primary-glow);
            background: rgba(255, 255, 255, 0.12);
        }
        .form-submit {
            width: 100%;
            height: 48px;
            background: var(--primary);
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
        }
        .form-submit:hover {
            background: var(--primary-hover);
            box-shadow: 0 4px 16px rgba(255, 107, 53, 0.4);
        }

        /* Footer */
        .site-footer {
            background: var(--secondary);
            color: #CBD5E1;
            padding: 2.5rem 0 1.5rem;
            font-size: 0.9rem;
        }
        .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.5rem;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin: 1rem 0;
        }
        .footer-links a {
            color: #94A3B8;
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 1.25rem;
            margin-top: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: #94A3B8;
        }
        @media (max-width: 768px) {
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* Utility */
        .text-gradient {
            background: linear-gradient(135deg, var(--primary), #FF8C5A);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .divider {
            width: 50px;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
            margin: 0.5rem 0 1.5rem;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }

/* roulang page: category1 */
:root {
            --primary: #FF6B35;
            --primary-hover: #EA580C;
            --primary-light: rgba(255, 107, 53, 0.10);
            --primary-glow: rgba(255, 107, 53, 0.30);
            --secondary: #1E293B;
            --bg: #F8FAFC;
            --surface: #FFFFFF;
            --accent: #0EA5E9;
            --accent-hover: #0284C7;
            --success: #10B981;
            --warning: #F59E0B;
            --text: #334155;
            --text-muted: #475569;
            --text-light: #64748B;
            --border: #E2E8F0;
            --border-focus: #CBD5E1;
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-sm: 6px;
            --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.10), 0 4px 6px -4px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 40px -8px rgba(0, 0, 0, 0.12);
            --font-stack: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
            background: none;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 1rem;
            }
        }

        /* Header & Navigation */
        .site-header {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 0;
            border-bottom: 1px solid var(--border);
        }

        .brand-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
            transition: opacity var(--transition-fast);
        }

        .brand-logo:hover {
            opacity: 0.85;
        }

        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .brand-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .search-trigger {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            transition: all var(--transition-fast);
            font-size: 1rem;
        }

        .search-trigger:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .channel-row {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            padding: 0.5rem 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            flex-wrap: nowrap;
        }

        .channel-row::-webkit-scrollbar {
            display: none;
        }

        .channel-link {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 1rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: var(--radius-sm);
            white-space: nowrap;
            transition: all var(--transition-fast);
            position: relative;
            letter-spacing: -0.01em;
        }

        .channel-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .channel-link.active {
            color: var(--primary);
            font-weight: 600;
            background: var(--primary-light);
        }

        .channel-link.active::after {
            content: '';
            position: absolute;
            bottom: -0.5rem;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 3px 3px 0 0;
        }

        /* Hamburger */
        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            padding: 8px;
            background: var(--bg);
            border-radius: var(--radius-sm);
            z-index: 1001;
            position: relative;
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--secondary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--surface);
            z-index: 999;
            padding: 5rem 1.5rem 2rem;
            flex-direction: column;
            gap: 0.5rem;
            overflow-y: auto;
        }

        .mobile-nav.open {
            display: flex;
        }

        .mobile-nav .channel-link {
            font-size: 1.1rem;
            padding: 0.75rem 1rem;
            border-radius: var(--radius-md);
        }

        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }
            .channel-row {
                display: none;
            }
            .mobile-nav .channel-row-mobile {
                display: flex;
                flex-direction: column;
                gap: 0.25rem;
            }
        }

        /* Hero Section */
        .hero-section {
            background: linear-gradient(160deg, #1E293B 0%, #263348 40%, #1a2332 100%);
            position: relative;
            overflow: hidden;
            padding: 3.5rem 0 4rem;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(255, 107, 53, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(14, 165, 233, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }

        .hero-content h1 {
            font-size: 2.5rem;
            font-weight: 800;
            color: #FFFFFF;
            margin: 0 0 1rem;
            letter-spacing: -0.03em;
            line-height: 1.25;
        }

        .hero-content .hero-subtitle {
            font-size: 1.1rem;
            color: #CBD5E1;
            line-height: 1.7;
            margin: 0 0 1.5rem;
        }

        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            margin-bottom: 1.5rem;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.45rem 0.9rem;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 20px;
            font-size: 0.85rem;
            color: #F1F5F9;
            font-weight: 500;
            white-space: nowrap;
            backdrop-filter: blur(4px);
        }

        .hero-badge i {
            color: var(--primary);
            font-size: 0.75rem;
        }

        .hero-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.85rem 2rem;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            letter-spacing: -0.01em;
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.35);
        }

        .hero-cta:hover {
            background: var(--primary-hover);
            box-shadow: 0 8px 24px rgba(255, 107, 53, 0.45);
            transform: translateY(-2px);
        }

        .hero-qualification-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-lg);
            padding: 1.75rem;
            backdrop-filter: blur(8px);
        }

        .hero-qualification-card h3 {
            color: #FFFFFF;
            font-size: 1.15rem;
            font-weight: 600;
            margin: 0 0 0.75rem;
            letter-spacing: -0.01em;
        }

        .hero-qualification-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .hero-qualification-card ul li {
            color: #CBD5E1;
            font-size: 0.9rem;
            padding: 0.4rem 0;
            padding-left: 1.5rem;
            position: relative;
            line-height: 1.5;
        }

        .hero-qualification-card ul li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--success);
            font-weight: 700;
            font-size: 0.8rem;
        }

        @media (max-width: 768px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .hero-section {
                padding: 2.5rem 0 3rem;
            }
            .hero-badges {
                gap: 0.4rem;
            }
            .hero-badge {
                font-size: 0.78rem;
                padding: 0.35rem 0.7rem;
            }
        }

        /* Section Common */
        .section {
            padding: 3.5rem 0;
        }

        .section-header {
            margin-bottom: 2.5rem;
        }

        .section-header h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--secondary);
            margin: 0 0 0.5rem;
            letter-spacing: -0.02em;
        }

        .section-header p {
            font-size: 1rem;
            color: var(--text-light);
            margin: 0;
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .section {
                padding: 2.5rem 0;
            }
            .section-header h2 {
                font-size: 1.45rem;
            }
        }

        /* Service Matrix */
        .service-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr;
            gap: 1.25rem;
        }

        .service-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 1.75rem;
            border: 1px solid var(--border);
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }

        .service-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
        }

        .service-card.featured {
            grid-row: span 2;
            background: linear-gradient(135deg, #FFF9F6 0%, #FFFFFF 100%);
            border-color: rgba(255, 107, 53, 0.25);
        }

        .service-card .service-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.3rem;
            margin-bottom: 1rem;
            flex-shrink: 0;
        }

        .service-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--secondary);
            margin: 0 0 0.5rem;
            letter-spacing: -0.01em;
        }

        .service-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
            margin: 0;
        }

        .service-card.featured p {
            font-size: 0.95rem;
        }

        .service-card .service-img {
            width: 100%;
            height: 140px;
            object-fit: cover;
            border-radius: var(--radius-md);
            margin-bottom: 1rem;
        }

        @media (max-width: 1024px) {
            .service-grid {
                grid-template-columns: 1fr 1fr;
            }
            .service-card.featured {
                grid-row: span 1;
            }
        }

        @media (max-width: 640px) {
            .service-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Brand Intro */
        .brand-intro-block {
            display: grid;
            grid-template-columns: 1fr 1.3fr;
            gap: 2.5rem;
            align-items: center;
            background: #F1F5F9;
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            border: 1px solid var(--border);
        }

        .brand-intro-block img {
            width: 100%;
            height: 280px;
            object-fit: cover;
            border-radius: var(--radius-md);
        }

        .brand-intro-block .brand-text h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--secondary);
            margin: 0 0 0.75rem;
            letter-spacing: -0.02em;
        }

        .brand-intro-block .brand-text p {
            font-size: 0.95rem;
            color: var(--text);
            line-height: 1.8;
            margin: 0;
        }

        @media (max-width: 768px) {
            .brand-intro-block {
                grid-template-columns: 1fr;
                padding: 1.5rem;
                gap: 1.5rem;
            }
            .brand-intro-block img {
                height: 200px;
            }
        }

        /* Process Steps */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
            counter-reset: step;
        }

        .process-step {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 1.75rem;
            border: 1px solid var(--border);
            text-align: center;
            position: relative;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
        }

        .process-step:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
        }

        .process-step .step-number {
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.2rem;
            margin: 0 auto 0.75rem;
        }

        .process-step h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--secondary);
            margin: 0 0 0.4rem;
        }

        .process-step p {
            font-size: 0.85rem;
            color: var(--text-light);
            line-height: 1.5;
            margin: 0;
        }

        @media (max-width: 1024px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 520px) {
            .process-steps {
                grid-template-columns: 1fr;
            }
        }

        /* Comparison */
        .comparison-table-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
        }

        .comparison-table {
            width: 100%;
            min-width: 600px;
            border-collapse: collapse;
            background: var(--surface);
        }

        .comparison-table thead th {
            background: var(--secondary);
            color: #fff;
            padding: 1rem 1.25rem;
            font-weight: 600;
            font-size: 0.95rem;
            text-align: center;
            letter-spacing: -0.01em;
        }

        .comparison-table thead th:first-child {
            text-align: left;
            border-radius: var(--radius-lg) 0 0 0;
        }

        .comparison-table thead th:last-child {
            border-radius: 0 var(--radius-lg) 0 0;
            background: var(--primary);
        }

        .comparison-table tbody td {
            padding: 0.9rem 1.25rem;
            text-align: center;
            font-size: 0.9rem;
            border-bottom: 1px solid var(--border);
            color: var(--text);
        }

        .comparison-table tbody td:first-child {
            text-align: left;
            font-weight: 500;
            color: var(--secondary);
        }

        .comparison-table tbody tr:nth-child(even) {
            background: #F8FAFC;
        }

        .comparison-table .icon-check {
            color: var(--success);
            font-size: 1.1rem;
        }

        .comparison-table .icon-cross {
            color: #EF4444;
            font-size: 1.1rem;
        }

        .comparison-table .highlight-cell {
            color: var(--primary);
            font-weight: 600;
        }

        @media (max-width: 768px) {
            .comparison-table-wrap {
                border-radius: var(--radius-md);
            }
            .comparison-table {
                min-width: 520px;
            }
            .comparison-table thead th,
            .comparison-table tbody td {
                padding: 0.65rem 0.8rem;
                font-size: 0.8rem;
            }
        }

        /* Deep Content */
        .deep-content-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
        }

        .deep-content-block.full-width {
            grid-template-columns: 1fr;
        }

        .deep-content-block .deep-text h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--secondary);
            margin: 0 0 0.75rem;
            letter-spacing: -0.02em;
        }

        .deep-content-block .deep-text p {
            font-size: 0.95rem;
            color: var(--text);
            line-height: 1.8;
            margin: 0 0 0.75rem;
        }

        .deep-content-block .deep-text ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .deep-content-block .deep-text ul li {
            padding: 0.35rem 0;
            padding-left: 1.4rem;
            position: relative;
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .deep-content-block .deep-text ul li::before {
            content: '•';
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: 700;
        }

        .deep-content-block img {
            width: 100%;
            height: 240px;
            object-fit: cover;
            border-radius: var(--radius-md);
        }

        @media (max-width: 768px) {
            .deep-content-block {
                grid-template-columns: 1fr;
                padding: 1.5rem;
                gap: 1.5rem;
            }
            .deep-content-block img {
                height: 180px;
            }
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item.active {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.08);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1rem 1.25rem;
            font-size: 1rem;
            font-weight: 600;
            color: var(--secondary);
            background: var(--surface);
            text-align: left;
            transition: all var(--transition-fast);
            gap: 0.75rem;
        }

        .faq-question:hover {
            background: #F8FAFC;
        }

        .faq-item.active .faq-question {
            background: #F8FAFC;
            color: var(--primary);
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: all var(--transition-fast);
            font-size: 0.8rem;
            color: var(--primary);
            font-weight: 700;
        }

        .faq-item.active .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), padding 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 1.25rem 1.25rem;
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* CTA Form */
        .cta-form-section {
            background: linear-gradient(135deg, #1E293B 0%, #263348 100%);
            border-radius: var(--radius-lg);
            padding: 3rem;
            position: relative;
            overflow: hidden;
        }

        .cta-form-section::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -50px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(255, 107, 53, 0.3) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-form-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 2.5rem;
            align-items: center;
        }

        .cta-form-info h2 {
            font-size: 1.7rem;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 0.75rem;
            letter-spacing: -0.02em;
        }

        .cta-form-info p {
            color: #CBD5E1;
            font-size: 0.95rem;
            line-height: 1.7;
            margin: 0;
        }

        .cta-form {
            display: flex;
            flex-direction: column;
            gap: 0.9rem;
        }

        .cta-form input,
        .cta-form textarea,
        .cta-form select {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.08);
            color: #FFFFFF;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            resize: vertical;
        }

        .cta-form input::placeholder,
        .cta-form textarea::placeholder {
            color: #94A3B8;
        }

        .cta-form input:focus,
        .cta-form textarea:focus,
        .cta-form select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.25);
            background: rgba(255, 255, 255, 0.12);
        }

        .cta-form textarea {
            min-height: 100px;
        }

        .cta-form .submit-btn {
            padding: 0.85rem 2rem;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            letter-spacing: -0.01em;
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.35);
            text-align: center;
        }

        .cta-form .submit-btn:hover {
            background: var(--primary-hover);
            box-shadow: 0 8px 24px rgba(255, 107, 53, 0.45);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .cta-form-inner {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .cta-form-section {
                padding: 2rem 1.5rem;
            }
            .cta-form-info h2 {
                font-size: 1.35rem;
            }
        }

        /* Footer */
        .site-footer {
            background: var(--secondary);
            color: #E2E8F0;
            padding: 2.5rem 0 1.5rem;
            margin-top: 0;
        }

        .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 0.5rem;
            letter-spacing: -0.02em;
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1.25rem;
            margin: 1.25rem 0;
            padding-top: 1rem;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
        }

        .footer-links a {
            color: #CBD5E1;
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--primary);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            align-items: center;
            font-size: 0.8rem;
            color: #94A3B8;
            padding-top: 1rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-bottom a {
            color: #94A3B8;
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: var(--primary);
        }

        @media (max-width: 768px) {
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.5rem;
            }
            .footer-links {
                gap: 0.75rem;
            }
        }

        /* Utility */
        .text-primary {
            color: var(--primary);
        }
        .bg-surface {
            background: var(--surface);
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }

/* roulang page: category2 */
:root {
            --primary: #FF6B35;
            --primary-hover: #EA580C;
            --primary-light: rgba(255, 107, 53, 0.10);
            --primary-glow: rgba(255, 107, 53, 0.30);
            --secondary: #1E293B;
            --bg: #F8FAFC;
            --surface: #FFFFFF;
            --accent: #0EA5E9;
            --accent-hover: #0284C7;
            --success: #10B981;
            --warning: #F59E0B;
            --text: #334155;
            --text-muted: #475569;
            --text-light: #64748B;
            --border: #E2E8F0;
            --border-focus: #CBD5E1;
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-sm: 6px;
            --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.10), 0 4px 6px -4px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 40px -8px rgba(0, 0, 0, 0.12);
            --font-stack: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 1rem;
            }
        }

        /* Header & Navigation */
        .site-header {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 0;
            border-bottom: 1px solid var(--border);
        }

        .brand-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }

        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .brand-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .search-trigger {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            transition: all var(--transition-fast);
            font-size: 1rem;
        }

        .search-trigger:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .channel-row {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            padding: 0.5rem 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }

        .channel-row::-webkit-scrollbar {
            display: none;
        }

        .channel-link {
            display: inline-flex;
            align-items: center;
            padding: 0.55rem 1rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: var(--radius-sm);
            white-space: nowrap;
            transition: all var(--transition-fast);
            position: relative;
            letter-spacing: 0.01em;
        }

        .channel-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .channel-link.active {
            color: var(--primary);
            font-weight: 700;
            background: var(--primary-light);
        }

        .channel-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        /* Hamburger */
        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            padding: 8px;
            background: var(--bg);
            border-radius: var(--radius-sm);
            z-index: 1001;
            position: relative;
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--secondary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--surface);
            z-index: 999;
            padding: 5rem 1.5rem 2rem;
            flex-direction: column;
            gap: 0.5rem;
            overflow-y: auto;
        }

        .mobile-nav.open {
            display: flex;
        }

        .mobile-nav .channel-link {
            font-size: 1.1rem;
            padding: 0.75rem 1rem;
            border-radius: var(--radius-md);
        }

        /* Coupon Hero */
        .coupon-hero {
            background: linear-gradient(135deg, #1E293B 0%, #0F172A 40%, #1E293B 100%);
            padding: 3rem 0 4rem;
            position: relative;
            overflow: hidden;
        }

        .coupon-hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -120px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 107, 53, 0.20) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .coupon-hero::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -80px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(14, 165, 233, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .coupon-hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            margin-bottom: 2.5rem;
        }

        .coupon-hero-content .hero-badge {
            display: inline-block;
            background: rgba(255, 107, 53, 0.20);
            color: #FF9A6C;
            padding: 0.4rem 1.2rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 1rem;
            border: 1px solid rgba(255, 107, 53, 0.30);
        }

        .coupon-hero-content h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #FFFFFF;
            line-height: 1.3;
            margin-bottom: 0.75rem;
            letter-spacing: -0.02em;
        }

        .coupon-hero-content .hero-subtitle {
            font-size: 1.1rem;
            color: #CBD5E1;
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .coupon-wall {
            display: grid;
            grid-template-columns: 1fr 1.5fr 1fr;
            gap: 1.5rem;
            align-items: stretch;
            position: relative;
            z-index: 2;
            max-width: 1000px;
            margin: 0 auto;
        }

        .coupon-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            border: 2px dashed var(--border);
            position: relative;
            cursor: pointer;
        }

        .coupon-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
        }

        .coupon-card.coupon-main {
            border: 3px solid var(--primary);
            box-shadow: var(--shadow-lg), 0 0 30px rgba(255, 107, 53, 0.20);
            padding: 2rem 1.5rem;
            transform: scale(1.03);
            background: linear-gradient(180deg, #FFFFFF 0%, #FFF8F5 100%);
            z-index: 3;
        }

        .coupon-card.coupon-main:hover {
            transform: scale(1.05) translateY(-6px);
            box-shadow: var(--shadow-lg), 0 0 45px rgba(255, 107, 53, 0.30);
            border-color: var(--primary-hover);
        }

        .coupon-card .coupon-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 0.75rem;
            background: var(--primary-light);
            color: var(--primary);
        }

        .coupon-card.coupon-main .coupon-icon {
            width: 60px;
            height: 60px;
            font-size: 1.6rem;
            background: var(--primary);
            color: #fff;
        }

        .coupon-card .coupon-value {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--secondary);
            margin-bottom: 0.3rem;
        }

        .coupon-card.coupon-main .coupon-value {
            font-size: 2.2rem;
            color: var(--primary);
        }

        .coupon-card .coupon-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0.5rem;
        }

        .coupon-card .coupon-desc {
            font-size: 0.8rem;
            color: var(--text-light);
            margin-bottom: 1rem;
            line-height: 1.5;
        }

        .coupon-card .coupon-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.55rem 1.4rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            background: var(--primary);
            color: #fff;
            cursor: pointer;
        }

        .coupon-card .coupon-btn:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(255, 107, 53, 0.35);
        }

        .coupon-card.coupon-main .coupon-btn {
            padding: 0.7rem 2rem;
            font-size: 1rem;
            letter-spacing: 0.02em;
        }

        .coupon-card .coupon-meta {
            font-size: 0.75rem;
            color: var(--text-light);
            margin-top: 0.5rem;
        }

        .coupon-ribbon {
            position: absolute;
            top: 12px;
            right: -8px;
            background: var(--warning);
            color: #1E293B;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 0.25rem 0.8rem;
            border-radius: 0 4px 4px 0;
            letter-spacing: 0.03em;
            z-index: 5;
            box-shadow: 2px 2px 4px rgba(0, 0, 0, 0.15);
        }

        .coupon-ribbon::before {
            content: '';
            position: absolute;
            bottom: -6px;
            right: 0;
            width: 0;
            height: 0;
            border-left: 6px solid transparent;
            border-top: 6px solid #D97706;
        }

        /* Section Styles */
        .section {
            padding: 4rem 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 3rem;
        }

        .section-header h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 0.75rem;
            letter-spacing: -0.02em;
        }

        .section-header .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .section-divider {
            width: 50px;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
            margin: 0.75rem auto;
        }

        /* Stats Dashboard */
        .stats-dashboard {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .stat-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 1.75rem 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            border: 1px solid var(--border);
        }

        .stat-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
        }

        .stat-card .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 0.4rem;
            letter-spacing: -0.02em;
        }

        .stat-card .stat-unit {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-muted);
        }

        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-top: 0.3rem;
        }

        /* Service Grid - Asymmetric */
        .service-asymmetric {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 1fr;
            gap: 1.5rem;
        }

        .service-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 1.75rem;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .service-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
        }

        .service-card .service-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--primary);
            flex-shrink: 0;
        }

        .service-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--secondary);
            line-height: 1.3;
        }

        .service-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .service-card .service-link {
            color: var(--accent);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            transition: all var(--transition-fast);
            margin-top: auto;
        }

        .service-card .service-link:hover {
            color: var(--accent-hover);
            gap: 0.5rem;
        }

        /* Comparison Section */
        .comparison-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            max-width: 900px;
            margin: 0 auto;
        }

        .comparison-panel {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 2rem;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
        }

        .comparison-panel.panel-bad {
            border-left: 4px solid #EF4444;
            background: #FEF2F2;
        }

        .comparison-panel.panel-good {
            border-left: 4px solid var(--success);
            background: #F0FDF4;
            box-shadow: var(--shadow-hover);
        }

        .comparison-panel h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 1.25rem;
            color: var(--secondary);
        }

        .comparison-item {
            display: flex;
            align-items: flex-start;
            gap: 0.75rem;
            padding: 0.6rem 0;
            border-bottom: 1px solid var(--border);
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .comparison-item:last-child {
            border-bottom: none;
        }

        .comparison-item .cmp-icon {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            font-weight: 700;
            margin-top: 2px;
        }

        .cmp-icon.icon-bad {
            background: #FEE2E2;
            color: #EF4444;
        }

        .cmp-icon.icon-good {
            background: #DCFCE7;
            color: #10B981;
        }

        /* Deep Content */
        .deep-content {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            line-height: 1.8;
        }

        .deep-content h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 1.25rem;
            letter-spacing: -0.01em;
        }

        .deep-content p {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 1em;
            line-height: 1.85;
        }

        .deep-content .highlight-box {
            background: var(--primary-light);
            border-left: 3px solid var(--primary);
            padding: 1rem 1.5rem;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: 1.5rem 0;
            font-weight: 500;
            color: var(--secondary);
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--surface);
            border-radius: var(--radius-md);
            margin-bottom: 0.75rem;
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: var(--border-focus);
        }

        .faq-question {
            width: 100%;
            padding: 1.1rem 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: none;
            font-size: 1rem;
            font-weight: 600;
            color: var(--secondary);
            text-align: left;
            transition: all var(--transition-fast);
            gap: 1rem;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            transition: all var(--transition-fast);
            color: var(--text-muted);
        }

        .faq-item.open .faq-question {
            color: var(--primary);
            background: #FFF8F5;
        }

        .faq-item.open .faq-question .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
        }

        .faq-answer-inner {
            padding: 0 1.5rem 1.25rem;
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* CTA Form */
        .cta-section {
            background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
            padding: 3.5rem 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            left: -60px;
            width: 250px;
            height: 250px;
            background: radial-gradient(circle, rgba(255, 107, 53, 0.18) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-form-wrapper {
            max-width: 600px;
            margin: 0 auto;
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            box-shadow: var(--shadow-lg);
            position: relative;
            z-index: 2;
        }

        .cta-form-wrapper h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--secondary);
            text-align: center;
            margin-bottom: 0.5rem;
        }

        .cta-form-wrapper .cta-subtitle {
            font-size: 0.9rem;
            color: var(--text-muted);
            text-align: center;
            margin-bottom: 1.75rem;
        }

        .form-group {
            margin-bottom: 1rem;
        }

        .form-group label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 0.35rem;
        }

        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            height: 46px;
            padding: 0 1rem;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            color: var(--text);
            transition: all var(--transition-fast);
            background: var(--bg);
        }

        .form-group textarea {
            height: 100px;
            padding: 0.75rem 1rem;
            resize: vertical;
        }

        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.25);
            background: var(--surface);
        }

        .submit-btn {
            width: 100%;
            padding: 0.85rem;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            border-radius: var(--radius-md);
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .submit-btn:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 107, 53, 0.35);
        }

        /* Footer */
        .site-footer {
            background: var(--secondary);
            color: #CBD5E1;
            padding: 3rem 0 2rem;
            border-top: 4px solid var(--primary);
        }

        .footer-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.75rem;
            letter-spacing: -0.01em;
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1.25rem;
            margin: 1.5rem 0;
        }

        .footer-links a {
            color: #94A3B8;
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--primary);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            align-items: center;
            font-size: 0.8rem;
            color: #94A3B8;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-bottom a {
            color: #94A3B8;
        }

        .footer-bottom a:hover {
            color: var(--primary);
        }

        /* Image block */
        .img-block {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .img-block img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .coupon-wall {
                grid-template-columns: 1fr 1.3fr 1fr;
                gap: 1rem;
            }
            .stats-dashboard {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-asymmetric {
                grid-template-columns: 1fr 1fr;
            }
            .comparison-wrapper {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }

        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }
            .channel-row {
                display: none;
            }
            .coupon-wall {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .coupon-card.coupon-main {
                transform: scale(1);
                order: -1;
            }
            .coupon-card.coupon-main:hover {
                transform: scale(1.02) translateY(-4px);
            }
            .stats-dashboard {
                grid-template-columns: 1fr 1fr;
                gap: 0.75rem;
            }
            .stat-card .stat-number {
                font-size: 2rem;
            }
            .service-asymmetric {
                grid-template-columns: 1fr;
            }
            .coupon-hero-content h1 {
                font-size: 1.7rem;
            }
            .section {
                padding: 2.5rem 0;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .deep-content {
                padding: 1.5rem;
            }
            .cta-form-wrapper {
                padding: 1.75rem;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.5rem;
            }
            .comparison-panel {
                padding: 1.25rem;
            }
        }

        @media (max-width: 520px) {
            .stats-dashboard {
                grid-template-columns: 1fr;
            }
            .coupon-hero-content h1 {
                font-size: 1.4rem;
            }
            .coupon-card.coupon-main {
                padding: 1.25rem;
            }
            .coupon-card.coupon-main .coupon-value {
                font-size: 1.7rem;
            }
            .footer-links {
                gap: 0.75rem;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #FF6B35;
            --primary-hover: #EA580C;
            --primary-light: rgba(255, 107, 53, 0.10);
            --primary-glow: rgba(255, 107, 53, 0.30);
            --secondary: #1E293B;
            --bg: #F8FAFC;
            --surface: #FFFFFF;
            --accent: #0EA5E9;
            --accent-hover: #0284C7;
            --success: #10B981;
            --warning: #F59E0B;
            --text: #334155;
            --text-muted: #475569;
            --text-light: #64748B;
            --border: #E2E8F0;
            --border-focus: #CBD5E1;
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-sm: 6px;
            --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.10), 0 4px 6px -4px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 40px -8px rgba(0, 0, 0, 0.12);
            --font-stack: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 1rem;
            }
        }

        /* Header & Navigation */
        .site-header {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 0;
            border-bottom: 1px solid var(--border);
        }

        .brand-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }

        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .brand-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .search-trigger {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            transition: all var(--transition-fast);
            font-size: 1rem;
        }

        .search-trigger:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .channel-row {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            padding: 0.5rem 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            flex-wrap: nowrap;
        }

        .channel-row::-webkit-scrollbar {
            display: none;
        }

        .channel-link {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 1rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: 20px;
            white-space: nowrap;
            transition: all var(--transition-fast);
            position: relative;
            flex-shrink: 0;
        }

        .channel-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .channel-link.active {
            color: var(--primary);
            font-weight: 700;
            background: var(--primary-light);
        }

        .channel-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        /* Hamburger */
        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            padding: 8px;
            background: var(--bg);
            border-radius: var(--radius-sm);
            z-index: 1001;
            position: relative;
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--secondary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--surface);
            z-index: 999;
            padding: 5rem 1.5rem 2rem;
            flex-direction: column;
            gap: 0.5rem;
            overflow-y: auto;
        }

        .mobile-nav.open {
            display: flex;
        }

        .mobile-nav .channel-link {
            font-size: 1.1rem;
            padding: 0.75rem 1rem;
            border-radius: var(--radius-md);
            width: 100%;
        }

        @media (max-width: 768px) {
            .channel-row {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .brand-logo {
                font-size: 1.25rem;
            }
            .brand-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }
        }

        /* Hero Section */
        .hero-section {
            background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
            padding: 3rem 0;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(255, 107, 53, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 250px;
            height: 250px;
            background: radial-gradient(circle, rgba(14, 165, 233, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-image-wrap {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 4/3;
        }

        .hero-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .hero-image-wrap .venue-badge {
            position: absolute;
            top: 1rem;
            right: 1rem;
            background: var(--primary);
            color: #fff;
            padding: 0.4rem 1rem;
            border-radius: 20px;
            font-weight: 700;
            font-size: 0.85rem;
            display: flex;
            align-items: center;
            gap: 0.35rem;
        }

        .hero-content h1 {
            font-size: 2.5rem;
            font-weight: 800;
            color: #FFFFFF;
            line-height: 1.2;
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
        }

        .hero-content .hero-subtitle {
            font-size: 1.1rem;
            color: #CBD5E1;
            line-height: 1.6;
            margin-bottom: 1.5rem;
        }

        .hero-stats-row {
            display: flex;
            gap: 1.5rem;
            margin-bottom: 1.5rem;
            flex-wrap: wrap;
        }

        .hero-stat-item {
            background: rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 0.75rem 1.25rem;
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.1);
            min-width: 90px;
        }

        .hero-stat-item .stat-num {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
        }

        .hero-stat-item .stat-label {
            font-size: 0.75rem;
            color: #94A3B8;
            margin-top: 0.2rem;
        }

        .hero-cta-group {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 1.75rem;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            border-radius: 25px;
            transition: all var(--transition-fast);
            font-size: 0.95rem;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(255, 107, 53, 0.35);
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 1.75rem;
            background: transparent;
            color: #fff;
            font-weight: 600;
            border-radius: 25px;
            border: 2px solid rgba(255, 255, 255, 0.4);
            transition: all var(--transition-fast);
            font-size: 0.95rem;
            white-space: nowrap;
        }

        .btn-outline-light:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .hero-image-wrap {
                aspect-ratio: 16/9;
            }
            .hero-stats-row {
                gap: 0.75rem;
            }
            .hero-stat-item {
                padding: 0.5rem 0.75rem;
            }
            .hero-stat-item .stat-num {
                font-size: 1.2rem;
            }
        }

        /* Section Common */
        .section {
            padding: 3.5rem 0;
        }

        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 0.5rem;
            letter-spacing: -0.02em;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            margin-bottom: 2rem;
            line-height: 1.6;
        }

        .section-header {
            text-align: center;
            margin-bottom: 2.5rem;
        }

        @media (max-width: 768px) {
            .section {
                padding: 2.5rem 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
        }

        /* Metrics Dashboard */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }

        .metric-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            border: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }

        .metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--primary);
            border-radius: 0 0 3px 3px;
            transform: scaleX(0);
            transition: transform var(--transition-smooth);
        }

        .metric-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .metric-card:hover::before {
            transform: scaleX(1);
        }

        .metric-card .metric-icon {
            width: 44px;
            height: 44px;
            margin: 0 auto 0.75rem;
            background: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.2rem;
        }

        .metric-card .metric-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--secondary);
            line-height: 1.1;
        }

        .metric-card .metric-label {
            font-size: 0.85rem;
            color: var(--text-light);
            margin-top: 0.35rem;
        }

        @media (max-width: 768px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 0.75rem;
            }
            .metric-card {
                padding: 1rem;
            }
            .metric-card .metric-num {
                font-size: 1.6rem;
            }
        }

        /* Venue Type Grid - Asymmetric */
        .venue-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            grid-template-rows: auto auto;
            gap: 1.25rem;
        }

        .venue-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            border: 1px solid var(--border);
            cursor: pointer;
            position: relative;
        }

        .venue-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: var(--primary);
        }

        .venue-card .venue-card-img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            display: block;
        }

        .venue-card.large {
            grid-row: span 2;
        }

        .venue-card.large .venue-card-img {
            aspect-ratio: 4/5;
        }

        .venue-card .venue-card-body {
            padding: 1rem 1.25rem;
        }

        .venue-card .venue-card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 0.25rem;
        }

        .venue-card .venue-card-desc {
            font-size: 0.85rem;
            color: var(--text-light);
            line-height: 1.5;
            margin-bottom: 0.5rem;
        }

        .venue-card .venue-card-tags {
            display: flex;
            gap: 0.4rem;
            flex-wrap: wrap;
        }

        .venue-card .venue-tag {
            font-size: 0.7rem;
            padding: 0.2rem 0.6rem;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
        }

        @media (max-width: 768px) {
            .venue-grid {
                grid-template-columns: 1fr 1fr;
                grid-template-rows: auto;
                gap: 0.75rem;
            }
            .venue-card.large {
                grid-row: span 1;
                grid-column: span 2;
            }
            .venue-card.large .venue-card-img {
                aspect-ratio: 16/9;
            }
        }

        @media (max-width: 520px) {
            .venue-grid {
                grid-template-columns: 1fr;
            }
            .venue-card.large {
                grid-column: span 1;
            }
        }

        /* Brand Intro */
        .brand-intro {
            background: #F1F5F9;
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.5rem;
            align-items: center;
        }

        .brand-intro-img {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            aspect-ratio: 4/3;
        }

        .brand-intro-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .brand-intro-content h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 1rem;
            letter-spacing: -0.01em;
        }

        .brand-intro-content p {
            font-size: 0.95rem;
            color: var(--text);
            line-height: 1.9;
            margin-bottom: 0.75rem;
        }

        @media (max-width: 768px) {
            .brand-intro {
                grid-template-columns: 1fr;
                padding: 1.5rem;
                gap: 1.5rem;
            }
            .brand-intro-content h3 {
                font-size: 1.3rem;
            }
        }

        /* Process Steps */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            position: relative;
        }

        .process-steps::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: var(--border);
            z-index: 0;
        }

        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .process-step .step-circle {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: var(--surface);
            border: 3px solid var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
        }

        .process-step:hover .step-circle {
            background: var(--primary);
            color: #fff;
            transform: scale(1.08);
            box-shadow: 0 0 0 12px rgba(255, 107, 53, 0.12);
        }

        .process-step .step-title {
            font-weight: 700;
            font-size: 1rem;
            color: var(--secondary);
            margin-bottom: 0.3rem;
        }

        .process-step .step-desc {
            font-size: 0.85rem;
            color: var(--text-light);
            line-height: 1.5;
        }

        @media (max-width: 768px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem 1rem;
            }
            .process-steps::before {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .process-steps {
                grid-template-columns: 1fr;
            }
        }

        /* Comparison */
        .comparison-table-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
        }

        .comparison-table thead th {
            background: var(--secondary);
            color: #fff;
            padding: 1rem 1.5rem;
            font-weight: 600;
            font-size: 0.9rem;
            text-align: center;
        }

        .comparison-table thead th:first-child {
            text-align: left;
            border-radius: var(--radius-lg) 0 0 0;
        }

        .comparison-table thead th:last-child {
            border-radius: 0 var(--radius-lg) 0 0;
            background: var(--primary);
        }

        .comparison-table tbody td {
            padding: 0.9rem 1.5rem;
            text-align: center;
            font-size: 0.9rem;
            border-bottom: 1px solid var(--border);
        }

        .comparison-table tbody td:first-child {
            text-align: left;
            font-weight: 600;
            color: var(--secondary);
        }

        .comparison-table tbody tr:nth-child(even) {
            background: #F8FAFC;
        }

        .comparison-table tbody tr:nth-child(odd) {
            background: #fff;
        }

        .comparison-table .icon-check {
            color: var(--success);
            font-size: 1.1rem;
        }

        .comparison-table .icon-cross {
            color: #EF4444;
            font-size: 1.1rem;
        }

        .comparison-table .highlight-col {
            background: rgba(255, 107, 53, 0.04) !important;
        }

        /* Deep Content */
        .deep-content-block {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            margin-bottom: 1.5rem;
        }

        .deep-content-block h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 1rem;
            padding-bottom: 0.75rem;
            border-bottom: 2px solid var(--primary);
            display: inline-block;
        }

        .deep-content-block p {
            font-size: 0.95rem;
            color: var(--text);
            line-height: 1.9;
            margin-bottom: 0.75rem;
        }

        .deep-content-block .info-list {
            list-style: none;
            padding: 0;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.75rem;
            margin-top: 1rem;
        }

        .deep-content-block .info-list li {
            padding: 0.6rem 1rem;
            background: #F8FAFC;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            border-left: 3px solid var(--primary);
        }

        .deep-content-block .info-list li i {
            color: var(--primary);
            font-size: 0.85rem;
        }

        @media (max-width: 768px) {
            .deep-content-block {
                padding: 1.5rem;
            }
            .deep-content-block .info-list {
                grid-template-columns: 1fr;
            }
        }

        /* News */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .news-item {
            display: grid;
            grid-template-columns: 100px 1fr;
            gap: 1.25rem;
            padding: 1.25rem;
            background: var(--surface);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            transition: all var(--transition-fast);
            align-items: center;
        }

        .news-item:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
            transform: translateX(3px);
        }

        .news-item .news-date {
            font-size: 0.8rem;
            color: var(--text-light);
            text-align: center;
            background: #F8FAFC;
            padding: 0.5rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            white-space: nowrap;
        }

        .news-item .news-content h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 0.25rem;
        }

        .news-item .news-content .news-excerpt {
            font-size: 0.85rem;
            color: var(--text-light);
            line-height: 1.5;
            margin-bottom: 0.4rem;
        }

        .news-item .news-content .news-link {
            font-size: 0.8rem;
            color: var(--accent);
            font-weight: 600;
            transition: color var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }

        .news-item .news-content .news-link:hover {
            color: var(--accent-hover);
            text-decoration: underline;
        }

        .news-item.featured {
            grid-template-columns: 1fr;
            background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
            border: none;
            padding: 2rem;
            border-radius: var(--radius-lg);
        }

        .news-item.featured .news-date {
            background: rgba(255, 255, 255, 0.1);
            color: #CBD5E1;
            display: inline-block;
            width: auto;
            margin-bottom: 0.75rem;
        }

        .news-item.featured .news-content h4 {
            color: #fff;
            font-size: 1.2rem;
        }

        .news-item.featured .news-content .news-excerpt {
            color: #CBD5E1;
        }

        .news-item.featured .news-content .news-link {
            color: var(--primary);
        }

        @media (max-width: 768px) {
            .news-item {
                grid-template-columns: 1fr;
                gap: 0.5rem;
            }
            .news-item .news-date {
                text-align: left;
                display: inline-block;
                width: auto;
            }
            .news-item.featured {
                padding: 1.25rem;
            }
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .faq-item {
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item .faq-question {
            width: 100%;
            padding: 1rem 1.25rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            background: transparent;
            font-size: 1rem;
            font-weight: 600;
            color: var(--secondary);
            text-align: left;
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .faq-item .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 0.8rem;
            flex-shrink: 0;
            transition: all var(--transition-fast);
        }

        .faq-item.active .faq-question {
            background: #F8FAFC;
            color: var(--primary);
        }

        .faq-item.active .faq-question .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }

        .faq-item.active .faq-answer {
            max-height: 500px;
            padding: 0 1.25rem 1.25rem;
        }

        .faq-item .faq-answer p {
            font-size: 0.9rem;
            color: var(--text);
            line-height: 1.7;
        }

        /* CTA Form */
        .cta-section {
            background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
            border-radius: var(--radius-lg);
            padding: 3rem;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -60px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(255, 107, 53, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.5rem;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .cta-info h3 {
            font-size: 1.7rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.75rem;
            letter-spacing: -0.01em;
        }

        .cta-info p {
            color: #CBD5E1;
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 1rem;
        }

        .cta-info .cta-benefits {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .cta-info .cta-benefits li {
            color: #CBD5E1;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .cta-info .cta-benefits li i {
            color: var(--success);
        }

        .cta-form-wrap {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 2rem;
            box-shadow: var(--shadow-lg);
        }

        .cta-form-wrap .form-group {
            margin-bottom: 1rem;
        }

        .cta-form-wrap label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 0.35rem;
        }

        .cta-form-wrap input,
        .cta-form-wrap textarea,
        .cta-form-wrap select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            background: #F8FAFC;
            color: var(--text);
        }

        .cta-form-wrap input:focus,
        .cta-form-wrap textarea:focus,
        .cta-form-wrap select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.2);
            background: #fff;
        }

        .cta-form-wrap textarea {
            resize: vertical;
            min-height: 80px;
        }

        .btn-submit {
            width: 100%;
            padding: 0.85rem;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            border-radius: 25px;
            transition: all var(--transition-fast);
            cursor: pointer;
            border: none;
        }

        .btn-submit:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(255, 107, 53, 0.35);
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 1.5rem;
            }
            .cta-inner {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .cta-info h3 {
                font-size: 1.4rem;
            }
            .cta-form-wrap {
                padding: 1.25rem;
            }
        }

        /* Footer */
        .site-footer {
            background: var(--secondary);
            color: #CBD5E1;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }

        .footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.75rem;
            letter-spacing: -0.02em;
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1.25rem;
            margin: 1.5rem 0;
            padding-top: 1.25rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-links a {
            color: #94A3B8;
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--primary);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            font-size: 0.8rem;
            color: #64748B;
            padding-top: 1.25rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            align-items: center;
        }

        .footer-bottom a {
            color: #94A3B8;
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: var(--primary);
        }

        @media (max-width: 768px) {
            .site-footer {
                padding: 2rem 0 1rem;
            }
            .footer-links {
                gap: 0.75rem;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.4rem;
            }
        }

        /* Scroll to top */
        .scroll-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            z-index: 900;
            box-shadow: var(--shadow-lg);
            opacity: 0;
            transform: translateY(20px);
            pointer-events: none;
            transition: all var(--transition-smooth);
        }

        .scroll-top.visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }

        .scroll-top:hover {
            background: var(--primary-hover);
            transform: translateY(-4px);
        }

        @media (max-width: 768px) {
            .scroll-top {
                bottom: 1.25rem;
                right: 1.25rem;
                width: 38px;
                height: 38px;
                font-size: 0.85rem;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #FF6B35;
            --primary-hover: #EA580C;
            --primary-light: rgba(255, 107, 53, 0.10);
            --primary-glow: rgba(255, 107, 53, 0.30);
            --secondary: #1E293B;
            --bg: #F8FAFC;
            --surface: #FFFFFF;
            --accent: #0EA5E9;
            --accent-hover: #0284C7;
            --success: #10B981;
            --warning: #F59E0B;
            --text: #334155;
            --text-muted: #475569;
            --text-light: #64748B;
            --border: #E2E8F0;
            --border-focus: #CBD5E1;
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-sm: 6px;
            --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.10), 0 4px 6px -4px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 40px -8px rgba(0, 0, 0, 0.12);
            --font-stack: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 1rem;
            }
        }

        /* Header & Navigation */
        .site-header {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 0;
            border-bottom: 1px solid var(--border);
        }

        .brand-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }

        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .brand-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .search-trigger {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            transition: all var(--transition-fast);
            font-size: 1rem;
        }

        .search-trigger:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .channel-row {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            padding: 0.5rem 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            flex-wrap: nowrap;
        }

        .channel-row::-webkit-scrollbar {
            display: none;
        }

        .channel-link {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 0.9rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: var(--radius-sm);
            white-space: nowrap;
            transition: all var(--transition-fast);
            position: relative;
            flex-shrink: 0;
        }

        .channel-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .channel-link.active {
            color: var(--primary);
            font-weight: 700;
            background: var(--primary-light);
        }

        .channel-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0.9rem;
            right: 0.9rem;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        /* Hamburger */
        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            padding: 8px;
            background: var(--bg);
            border-radius: var(--radius-sm);
            z-index: 1001;
            position: relative;
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--secondary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--surface);
            z-index: 999;
            padding: 5rem 1.5rem 2rem;
            flex-direction: column;
            gap: 0.5rem;
            overflow-y: auto;
        }

        .mobile-nav.open {
            display: flex;
        }

        .mobile-nav .channel-link {
            font-size: 1.1rem;
            padding: 0.75rem 1rem;
            border-radius: var(--radius-md);
            display: block;
            width: 100%;
        }

        @media (max-width: 768px) {
            .channel-row {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .brand-logo {
                font-size: 1.25rem;
            }
            .brand-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }
        }

        /* Hero Banner */
        .hero-banner {
            position: relative;
            min-height: 480px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, #1E293B 0%, #334155 40%, #1E293B 100%);
            overflow: hidden;
        }

        .hero-banner .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
            z-index: 0;
        }

        .hero-banner .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(30, 41, 59, 0.55) 0%, rgba(30, 41, 59, 0.75) 60%, rgba(30, 41, 59, 0.9) 100%);
            z-index: 1;
        }

        .hero-banner .hero-content {
            position: relative;
            z-index: 2;
            padding: 3rem 0;
            width: 100%;
        }

        .hero-series-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-bottom: 1.5rem;
        }

        .hero-series-tag {
            display: inline-flex;
            align-items: center;
            padding: 0.4rem 1rem;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 50px;
            color: #fff;
            font-size: 0.85rem;
            font-weight: 500;
            backdrop-filter: blur(8px);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .hero-series-tag:hover {
            background: rgba(255, 107, 53, 0.35);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .hero-title {
            font-size: 2.5rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.03em;
            margin-bottom: 1rem;
            line-height: 1.2;
        }

        .hero-title .highlight {
            color: var(--primary);
        }

        .hero-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: 2rem;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.8rem 1.8rem;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            border-radius: 50px;
            font-size: 1rem;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.35);
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: 0 8px 24px rgba(255, 107, 53, 0.45);
            transform: translateY(-2px);
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.8rem 1.8rem;
            background: transparent;
            color: #fff;
            font-weight: 600;
            border-radius: 50px;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.5);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-outline-light:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .hero-banner {
                min-height: 400px;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-subtitle {
                font-size: 0.95rem;
            }
            .hero-series-tag {
                font-size: 0.75rem;
                padding: 0.3rem 0.7rem;
            }
            .btn-primary,
            .btn-outline-light {
                padding: 0.65rem 1.3rem;
                font-size: 0.9rem;
            }
        }

        /* Section */
        .section {
            padding: 4rem 0;
        }

        .section-alt {
            background: var(--surface);
        }

        .section-header {
            text-align: center;
            margin-bottom: 3rem;
        }

        .section-header h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: var(--secondary);
            letter-spacing: -0.02em;
            margin-bottom: 0.75rem;
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 650px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .section-tag {
            display: inline-block;
            padding: 0.3rem 0.8rem;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: 50px;
            margin-bottom: 1rem;
            letter-spacing: 0.03em;
        }

        /* Cards */
        .card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 1.8rem;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: var(--primary);
        }

        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.4rem;
            margin-bottom: 1rem;
            flex-shrink: 0;
        }

        .card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 0.5rem;
        }

        .card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            flex-grow: 1;
        }

        .card-img {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 1rem;
            aspect-ratio: 16 / 10;
        }

        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .card:hover .card-img img {
            transform: scale(1.05);
        }

        /* Process Steps */
        .process-steps {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            counter-reset: step;
        }

        .process-step {
            flex: 1 1 200px;
            min-width: 180px;
            position: relative;
            padding: 2rem 1.5rem;
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            text-align: center;
            transition: all var(--transition-smooth);
            counter-increment: step;
        }

        .process-step::before {
            content: counter(step);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            margin: 0 auto 1rem;
            transition: all var(--transition-smooth);
        }

        .process-step:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: var(--primary);
        }

        .process-step:hover::before {
            background: var(--primary-hover);
            box-shadow: 0 0 0 8px var(--primary-light);
        }

        .process-step h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 0.5rem;
        }

        .process-step p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* Comparison */
        .comparison-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
            background: var(--surface);
        }

        .comparison-table thead th {
            background: var(--secondary);
            color: #fff;
            padding: 1rem 1.5rem;
            font-weight: 600;
            font-size: 0.95rem;
            text-align: left;
        }

        .comparison-table thead th:last-child {
            background: var(--primary);
        }

        .comparison-table tbody td {
            padding: 1rem 1.5rem;
            border-bottom: 1px solid var(--border);
            font-size: 0.9rem;
            color: var(--text);
            vertical-align: middle;
        }

        .comparison-table tbody tr:nth-child(even) {
            background: #F8FAFC;
        }

        .comparison-table .check-icon {
            color: var(--success);
            font-size: 1.1rem;
        }

        .comparison-table .cross-icon {
            color: #EF4444;
            font-size: 1.1rem;
        }

        .comparison-table .highlight-cell {
            font-weight: 600;
            color: var(--primary);
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

        .faq-item.active {
            border-color: var(--primary);
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.1rem 1.5rem;
            background: transparent;
            font-size: 1rem;
            font-weight: 600;
            color: var(--secondary);
            text-align: left;
            transition: all var(--transition-fast);
            gap: 1rem;
            cursor: pointer;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-item.active .faq-question {
            color: var(--primary);
            background: var(--primary-light);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            transition: all var(--transition-fast);
            color: var(--text-muted);
        }

        .faq-item.active .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
        }

        .faq-answer-inner {
            padding: 0 1.5rem 1.2rem;
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* CTA Form */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, #1a2535 100%);
            padding: 4rem 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.1;
            z-index: 0;
        }

        .cta-section .cta-content {
            position: relative;
            z-index: 1;
            display: flex;
            flex-wrap: wrap;
            gap: 3rem;
            align-items: center;
        }

        .cta-text {
            flex: 1 1 350px;
            color: #fff;
        }

        .cta-text h2 {
            font-size: 1.9rem;
            font-weight: 700;
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
        }

        .cta-text p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1rem;
            line-height: 1.7;
        }

        .cta-form-wrap {
            flex: 1 1 380px;
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 2rem;
            box-shadow: var(--shadow-lg);
        }

        .cta-form-wrap h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 1.25rem;
            text-align: center;
        }

        .form-group {
            margin-bottom: 1rem;
        }

        .form-group label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-muted);
            margin-bottom: 0.35rem;
        }

        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.75rem 1rem;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            color: var(--text);
            background: var(--bg);
            transition: all var(--transition-fast);
            resize: vertical;
        }

        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px var(--primary-glow);
            background: #fff;
        }

        .form-group textarea {
            min-height: 100px;
        }

        .btn-submit {
            width: 100%;
            padding: 0.85rem;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            border-radius: 50px;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.3);
            cursor: pointer;
        }

        .btn-submit:hover {
            background: var(--primary-hover);
            box-shadow: 0 8px 24px rgba(255, 107, 53, 0.4);
            transform: translateY(-2px);
        }

        /* Depth Content */
        .depth-block {
            display: flex;
            flex-wrap: wrap;
            gap: 2.5rem;
            align-items: center;
        }

        .depth-block.reverse {
            flex-direction: row-reverse;
        }

        .depth-text {
            flex: 1 1 350px;
        }

        .depth-text h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
        }

        .depth-text p {
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 1rem;
            font-size: 0.95rem;
        }

        .depth-visual {
            flex: 1 1 350px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .depth-visual img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        .highlight-list {
            list-style: none;
            padding: 0;
            margin: 1rem 0;
        }

        .highlight-list li {
            padding: 0.5rem 0;
            display: flex;
            align-items: flex-start;
            gap: 0.6rem;
            font-size: 0.9rem;
            color: var(--text);
            line-height: 1.6;
        }

        .highlight-list li i {
            color: var(--success);
            margin-top: 0.2rem;
            flex-shrink: 0;
        }

        /* Stats Row */
        .stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            justify-content: center;
        }

        .stat-card {
            flex: 1 1 180px;
            min-width: 150px;
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 1.8rem 1.2rem;
            text-align: center;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
        }

        .stat-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: var(--primary);
        }

        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
            line-height: 1;
        }

        .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 0.5rem;
            font-weight: 500;
        }

        /* Footer */
        .site-footer {
            background: var(--secondary);
            padding: 3rem 0 1.5rem;
            color: #CBD5E1;
        }

        .footer-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.75rem;
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1.25rem;
            margin: 1.5rem 0;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-links a {
            color: #94A3B8;
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--primary);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            font-size: 0.8rem;
            color: #94A3B8;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            justify-content: space-between;
            align-items: center;
        }

        .footer-bottom a {
            color: #94A3B8;
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: var(--primary);
        }

        @media (max-width: 768px) {
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.4rem;
            }
            .section {
                padding: 2.5rem 0;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .depth-block {
                gap: 1.5rem;
            }
            .depth-text h3 {
                font-size: 1.25rem;
            }
            .stat-number {
                font-size: 2rem;
            }
            .cta-text h2 {
                font-size: 1.5rem;
            }
            .comparison-table-wrap {
                border-radius: var(--radius-md);
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.5rem;
            }
            .hero-series-tags {
                gap: 0.35rem;
            }
            .hero-series-tag {
                font-size: 0.7rem;
                padding: 0.25rem 0.6rem;
            }
            .process-steps {
                flex-direction: column;
            }
            .process-step {
                flex: 1 1 auto;
            }
            .stats-row {
                gap: 0.75rem;
            }
            .stat-card {
                flex: 1 1 120px;
                min-width: 110px;
                padding: 1.2rem 0.8rem;
            }
            .stat-number {
                font-size: 1.6rem;
            }
            .card {
                padding: 1.2rem;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #FF6B35;
            --primary-hover: #EA580C;
            --primary-light: rgba(255, 107, 53, 0.10);
            --primary-glow: rgba(255, 107, 53, 0.30);
            --secondary: #1E293B;
            --bg: #F8FAFC;
            --surface: #FFFFFF;
            --accent: #0EA5E9;
            --accent-hover: #0284C7;
            --success: #10B981;
            --warning: #F59E0B;
            --text: #334155;
            --text-muted: #475569;
            --text-light: #64748B;
            --border: #E2E8F0;
            --border-focus: #CBD5E1;
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-sm: 6px;
            --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.10), 0 4px 6px -4px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 40px -8px rgba(0, 0, 0, 0.12);
            --font-stack: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        body {
            font-family: var(--font-stack);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 1rem;
            }
        }

        /* Header & Navigation */
        .site-header {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 0;
            border-bottom: 1px solid var(--border);
        }

        .brand-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
            transition: opacity var(--transition-fast);
        }

        .brand-logo:hover {
            opacity: 0.85;
        }

        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .brand-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .search-trigger {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            transition: all var(--transition-fast);
            font-size: 1rem;
        }

        .search-trigger:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .channel-row {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            padding: 0.5rem 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }

        .channel-row::-webkit-scrollbar {
            display: none;
        }

        .channel-link {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 1rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: 20px;
            white-space: nowrap;
            transition: all var(--transition-fast);
            position: relative;
            letter-spacing: 0.01em;
        }

        .channel-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .channel-link.active {
            color: var(--primary);
            font-weight: 700;
            background: var(--primary-light);
        }

        .channel-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        /* Hamburger */
        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            padding: 8px;
            background: var(--bg);
            border-radius: var(--radius-sm);
            z-index: 1001;
            position: relative;
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--secondary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--surface);
            z-index: 999;
            padding: 5rem 1.5rem 2rem;
            flex-direction: column;
            gap: 0.5rem;
            overflow-y: auto;
        }

        .mobile-nav.open {
            display: flex;
        }

        .mobile-nav .channel-link {
            font-size: 1.1rem;
            padding: 0.75rem 1rem;
            border-radius: var(--radius-md);
            justify-content: flex-start;
        }

        @media (max-width: 768px) {
            .channel-row {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .brand-logo {
                font-size: 1.25rem;
            }
            .brand-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }
        }

        /* Page Banner */
        .page-banner {
            background: linear-gradient(135deg, #1E293B 0%, #334155 40%, #1E293B 100%);
            padding: 3.5rem 0;
            position: relative;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 107, 53, 0.08);
            pointer-events: none;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(14, 165, 233, 0.06);
            pointer-events: none;
        }

        .page-banner .banner-content {
            position: relative;
            z-index: 1;
        }

        .page-banner h1 {
            font-size: 2.25rem;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 0.75rem;
            letter-spacing: -0.02em;
            line-height: 1.3;
        }

        .page-banner .banner-subtitle {
            font-size: 1.1rem;
            color: #CBD5E1;
            max-width: 600px;
            line-height: 1.7;
            margin: 0 0 1.5rem;
        }

        .page-banner .banner-stats-row {
            display: flex;
            gap: 2rem;
            flex-wrap: wrap;
        }

        .page-banner .banner-stat {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: #E2E8F0;
            font-size: 0.9rem;
        }

        .page-banner .banner-stat i {
            color: var(--primary);
            font-size: 1.1rem;
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 2.5rem 0;
            }
            .page-banner h1 {
                font-size: 1.75rem;
            }
            .page-banner .banner-subtitle {
                font-size: 1rem;
            }
            .page-banner .banner-stats-row {
                gap: 1rem;
            }
        }

        /* Section Common */
        .section {
            padding: 3.5rem 0;
        }

        .section-alt {
            background: var(--surface);
        }

        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--secondary);
            margin: 0 0 0.75rem;
            letter-spacing: -0.02em;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-light);
            max-width: 650px;
            line-height: 1.7;
            margin: 0 0 2rem;
        }

        @media (max-width: 768px) {
            .section {
                padding: 2.5rem 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
        }

        /* Metrics Dashboard */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }

        .metric-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            border: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }

        .metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--primary);
            border-radius: 3px 3px 0 0;
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

        .metric-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
        }

        .metric-card:hover::before {
            opacity: 1;
        }

        .metric-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 0.35rem;
        }

        .metric-label {
            font-size: 0.875rem;
            color: var(--text-light);
            font-weight: 500;
        }

        @media (max-width: 768px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 0.75rem;
            }
            .metric-card {
                padding: 1.25rem;
            }
            .metric-number {
                font-size: 2rem;
            }
        }

        @media (max-width: 520px) {
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.5rem;
            }
            .metric-number {
                font-size: 1.75rem;
            }
        }

        /* Course Cards */
        .course-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .course-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }

        .course-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
        }

        .course-card-image {
            height: 200px;
            overflow: hidden;
            position: relative;
        }

        .course-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .course-card:hover .course-card-image img {
            transform: scale(1.05);
        }

        .course-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.3rem 0.75rem;
            border-radius: 20px;
            z-index: 2;
        }

        .course-card-body {
            padding: 1.25rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .course-card-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--secondary);
            margin: 0 0 0.5rem;
            line-height: 1.4;
        }

        .course-card-desc {
            font-size: 0.875rem;
            color: var(--text-light);
            line-height: 1.6;
            margin: 0 0 1rem;
            flex: 1;
        }

        .course-card-meta {
            display: flex;
            gap: 1rem;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 1rem;
            flex-wrap: wrap;
        }

        .course-card-meta span {
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }

        .course-card-meta i {
            color: var(--primary);
            font-size: 0.85rem;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.4rem;
            padding: 0.65rem 1.5rem;
            font-weight: 600;
            font-size: 0.9rem;
            border-radius: 25px;
            transition: all var(--transition-fast);
            cursor: pointer;
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            border: 2px solid var(--primary);
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            border-color: var(--primary-hover);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            border: 2px solid var(--accent);
        }

        .btn-accent:hover {
            background: var(--accent-hover);
            border-color: var(--accent-hover);
        }

        @media (max-width: 1024px) {
            .course-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .course-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .course-card-image {
                height: 180px;
            }
        }

        /* Coach Team */
        .coach-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .coach-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            transition: all var(--transition-smooth);
            text-align: center;
        }

        .coach-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
        }

        .coach-card-image {
            height: 240px;
            overflow: hidden;
        }

        .coach-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .coach-card:hover .coach-card-image img {
            transform: scale(1.04);
        }

        .coach-card-body {
            padding: 1.25rem;
        }

        .coach-card-name {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--secondary);
            margin: 0 0 0.25rem;
        }

        .coach-card-title {
            font-size: 0.85rem;
            color: var(--primary);
            font-weight: 600;
            margin: 0 0 0.5rem;
        }

        .coach-card-desc {
            font-size: 0.85rem;
            color: var(--text-light);
            line-height: 1.5;
        }

        @media (max-width: 768px) {
            .coach-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .coach-card-image {
                height: 200px;
            }
        }

        @media (max-width: 520px) {
            .coach-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Process Steps */
        .process-steps {
            display: flex;
            gap: 0;
            position: relative;
            flex-wrap: nowrap;
            overflow-x: auto;
            padding: 0.5rem 0;
        }

        .process-step {
            flex: 1;
            min-width: 180px;
            text-align: center;
            position: relative;
            padding: 0 1rem;
        }

        .process-step::after {
            content: '';
            position: absolute;
            top: 36px;
            right: -50%;
            width: 100%;
            height: 2px;
            background: var(--border);
            z-index: 0;
        }

        .process-step:last-child::after {
            display: none;
        }

        .process-step-icon {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: var(--surface);
            border: 3px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            position: relative;
            z-index: 1;
            font-size: 1.5rem;
            color: var(--primary);
            transition: all var(--transition-smooth);
        }

        .process-step:hover .process-step-icon {
            border-color: var(--primary);
            background: var(--primary-light);
            box-shadow: 0 0 0 8px var(--primary-light);
        }

        .process-step-title {
            font-weight: 700;
            font-size: 1rem;
            color: var(--secondary);
            margin: 0 0 0.35rem;
        }

        .process-step-desc {
            font-size: 0.85rem;
            color: var(--text-light);
            line-height: 1.5;
        }

        @media (max-width: 768px) {
            .process-steps {
                flex-wrap: wrap;
                gap: 1.5rem;
            }
            .process-step {
                flex: 1 1 40%;
                min-width: 140px;
            }
            .process-step::after {
                display: none;
            }
        }

        /* Comparison */
        .comparison-table-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
        }

        .comparison-table thead th {
            background: var(--secondary);
            color: #fff;
            padding: 1rem 1.25rem;
            font-weight: 600;
            font-size: 0.95rem;
            text-align: center;
            white-space: nowrap;
        }

        .comparison-table thead th:first-child {
            text-align: left;
            border-radius: var(--radius-lg) 0 0 0;
        }

        .comparison-table thead th:last-child {
            border-radius: 0 var(--radius-lg) 0 0;
            background: var(--primary);
        }

        .comparison-table tbody td {
            padding: 0.85rem 1.25rem;
            text-align: center;
            border-bottom: 1px solid var(--border);
            font-size: 0.9rem;
            color: var(--text);
        }

        .comparison-table tbody td:first-child {
            text-align: left;
            font-weight: 600;
            color: var(--secondary);
        }

        .comparison-table tbody tr:nth-child(even) {
            background: #F8FAFC;
        }

        .comparison-table tbody tr:hover {
            background: #F1F5F9;
        }

        .icon-check {
            color: var(--success);
            font-size: 1.2rem;
        }

        .icon-cross {
            color: #EF4444;
            font-size: 1.2rem;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

        .faq-item:hover {
            border-color: var(--border-focus);
        }

        .faq-item.active {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.08);
        }

        .faq-question {
            width: 100%;
            padding: 1rem 1.25rem;
            background: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            font-weight: 600;
            font-size: 1rem;
            color: var(--secondary);
            text-align: left;
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-item.active .faq-question {
            color: var(--primary);
            background: var(--primary-light);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: all var(--transition-fast);
        }

        .faq-item.active .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            padding: 0 1.25rem;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 1.25rem 1rem;
        }

        .faq-answer p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* CTA Form */
        .cta-form-section {
            background: linear-gradient(135deg, #1E293B 0%, #2D3A4F 60%, #1E293B 100%);
            padding: 3.5rem 0;
            position: relative;
            overflow: hidden;
        }

        .cta-form-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -60px;
            width: 250px;
            height: 250px;
            border-radius: 50%;
            background: rgba(255, 107, 53, 0.06);
            pointer-events: none;
        }

        .form-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            box-shadow: var(--shadow-lg);
            max-width: 650px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        .form-card h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--secondary);
            margin: 0 0 0.5rem;
            text-align: center;
        }

        .form-card .form-subtitle {
            font-size: 0.9rem;
            color: var(--text-light);
            text-align: center;
            margin: 0 0 1.5rem;
        }

        .form-group {
            margin-bottom: 1rem;
        }

        .form-group label {
            display: block;
            font-weight: 600;
            font-size: 0.85rem;
            color: var(--secondary);
            margin-bottom: 0.35rem;
        }

        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 1.5px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            color: var(--text);
            background: var(--bg);
            transition: all var(--transition-fast);
            line-height: 1.5;
        }

        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.15);
            background: #fff;
        }

        .form-group textarea {
            resize: vertical;
            min-height: 100px;
        }

        .btn-submit {
            width: 100%;
            padding: 0.85rem;
            font-size: 1rem;
            font-weight: 700;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 25px;
            cursor: pointer;
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
        }

        .btn-submit:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 107, 53, 0.35);
        }

        @media (max-width: 768px) {
            .form-card {
                padding: 1.5rem;
            }
            .cta-form-section {
                padding: 2.5rem 0;
            }
        }

        /* Scenarios */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }

        .scenario-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 1.75rem;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            display: flex;
            gap: 1rem;
            transition: all var(--transition-smooth);
            align-items: flex-start;
        }

        .scenario-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
        }

        .scenario-icon {
            width: 50px;
            height: 50px;
            border-radius: var(--radius-md);
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 1.3rem;
            color: var(--primary);
        }

        .scenario-info h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--secondary);
            margin: 0 0 0.35rem;
        }

        .scenario-info p {
            font-size: 0.875rem;
            color: var(--text-light);
            line-height: 1.6;
            margin: 0;
        }

        @media (max-width: 768px) {
            .scenario-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
        }

        /* Footer */
        .site-footer {
            background: var(--secondary);
            padding: 2.5rem 0 1.5rem;
            color: #E2E8F0;
        }

        .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.5rem;
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem 1.5rem;
            margin: 1.25rem 0;
        }

        .footer-links a {
            color: #CBD5E1;
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--primary);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem 1rem;
            font-size: 0.8rem;
            color: #94A3B8;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 1.25rem;
            margin-top: 1rem;
            align-items: center;
        }

        .footer-bottom a {
            color: #94A3B8;
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: var(--primary);
        }

        @media (max-width: 768px) {
            .site-footer {
                padding: 2rem 0 1.25rem;
            }
            .footer-links {
                gap: 0.5rem 1rem;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 0.35rem;
            }
        }

/* roulang page: category6 */
:root {
            --primary: #FF6B35;
            --primary-hover: #EA580C;
            --primary-light: rgba(255, 107, 53, 0.10);
            --primary-glow: rgba(255, 107, 53, 0.30);
            --secondary: #1E293B;
            --bg: #F8FAFC;
            --surface: #FFFFFF;
            --accent: #0EA5E9;
            --accent-hover: #0284C7;
            --success: #10B981;
            --warning: #F59E0B;
            --text: #334155;
            --text-muted: #475569;
            --text-light: #64748B;
            --border: #E2E8F0;
            --border-focus: #CBD5E1;
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-sm: 6px;
            --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.10), 0 4px 6px -4px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 40px -8px rgba(0, 0, 0, 0.12);
            --font-stack: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 1rem;
            }
        }

        /* Header & Navigation */
        .site-header {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 0;
            border-bottom: 1px solid var(--border);
        }

        .brand-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }

        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .brand-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .search-trigger {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            transition: all var(--transition-fast);
            font-size: 1rem;
        }

        .search-trigger:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .channel-row {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            padding: 0.5rem 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }

        .channel-row::-webkit-scrollbar {
            display: none;
        }

        .channel-link {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 1rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: 20px;
            white-space: nowrap;
            transition: all var(--transition-fast);
            position: relative;
        }

        .channel-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .channel-link.active {
            color: var(--primary);
            font-weight: 700;
            background: var(--primary-light);
        }

        .channel-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        /* Hamburger */
        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            padding: 8px;
            background: var(--bg);
            border-radius: var(--radius-sm);
            z-index: 1001;
            position: relative;
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--secondary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--surface);
            z-index: 999;
            padding: 5rem 1.5rem 2rem;
            flex-direction: column;
            gap: 0.5rem;
            overflow-y: auto;
        }

        .mobile-nav.open {
            display: flex;
        }

        .mobile-nav .channel-link {
            font-size: 1.1rem;
            padding: 0.75rem 1rem;
            border-radius: var(--radius-md);
            font-weight: 500;
        }

        /* Hero Section - 拼团转化 */
        .hero-group-buy {
            position: relative;
            background: linear-gradient(160deg, #1E293B 0%, #0F172A 40%, #1a1a2e 100%);
            padding: 3rem 0 4rem;
            overflow: hidden;
            min-height: 500px;
            display: flex;
            align-items: center;
        }

        .hero-group-buy::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -120px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255, 107, 53, 0.18) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-group-buy::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -100px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(14, 165, 233, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-gb-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }

        .hero-gb-left {
            color: #fff;
        }

        .hero-gb-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(255, 107, 53, 0.2);
            border: 1px solid rgba(255, 107, 53, 0.4);
            color: #FF8C60;
            padding: 0.4rem 1rem;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 1.25rem;
            letter-spacing: 0.02em;
        }

        .hero-gb-badge i {
            animation: pulse-icon 1.5s ease-in-out infinite;
        }

        @keyframes pulse-icon {
            0%,
            100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.25);
            }
        }

        .hero-gb-left h1 {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.2;
            margin: 0 0 0.75rem 0;
            color: #fff;
            letter-spacing: -0.02em;
        }

        .hero-gb-left h1 span {
            color: #FF6B35;
            position: relative;
        }

        .hero-gb-subtitle {
            font-size: 1.1rem;
            color: #CBD5E1;
            line-height: 1.6;
            margin-bottom: 1.5rem;
            max-width: 460px;
        }

        .hero-gb-progress-wrap {
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            padding: 1.25rem 1.5rem;
            margin-bottom: 1.5rem;
            border: 1px solid rgba(255, 255, 255, 0.1);
            max-width: 460px;
        }

        .hero-gb-progress-label {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 0.6rem;
            font-size: 0.9rem;
            color: #E2E8F0;
        }

        .hero-gb-progress-label strong {
            color: #FF6B35;
            font-size: 1.05rem;
        }

        .hero-gb-progress-bar {
            width: 100%;
            height: 8px;
            background: rgba(255, 255, 255, 0.12);
            border-radius: 10px;
            overflow: hidden;
            margin-bottom: 0.5rem;
        }

        .hero-gb-progress-fill {
            height: 100%;
            background: linear-gradient(90deg, #FF6B35, #FF8C60);
            border-radius: 10px;
            width: 66%;
            transition: width 0.8s ease;
            position: relative;
        }

        .hero-gb-progress-fill::after {
            content: '';
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 16px;
            height: 16px;
            background: #fff;
            border-radius: 50%;
            border: 3px solid #FF6B35;
        }

        .hero-gb-avatars {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.8rem;
            color: #94A3B8;
        }

        .hero-gb-avatar-stack {
            display: flex;
            margin-right: 0.25rem;
        }

        .hero-gb-avatar-stack span {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: #475569;
            border: 2px solid #1E293B;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            color: #fff;
            margin-right: -8px;
        }

        .hero-gb-buttons {
            display: flex;
            gap: 0.75rem;
            flex-wrap: wrap;
        }

        .btn-gb-primary {
            background: #FF6B35;
            color: #fff;
            padding: 0.8rem 1.75rem;
            border-radius: 25px;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            box-shadow: 0 4px 16px rgba(255, 107, 53, 0.35);
            letter-spacing: 0.01em;
        }

        .btn-gb-primary:hover {
            background: #EA580C;
            box-shadow: 0 6px 22px rgba(255, 107, 53, 0.45);
            transform: translateY(-2px);
        }

        .btn-gb-secondary {
            background: transparent;
            color: #fff;
            padding: 0.8rem 1.75rem;
            border-radius: 25px;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.35);
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .btn-gb-secondary:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }

        .hero-gb-right {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-gb-card-visual {
            background: rgba(255, 255, 255, 0.04);
            border-radius: 20px;
            padding: 1.5rem;
            border: 1px solid rgba(255, 255, 255, 0.1);
            max-width: 380px;
            width: 100%;
        }

        .hero-gb-card-visual img {
            border-radius: 12px;
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        .hero-gb-card-tag {
            display: inline-block;
            background: #FF6B35;
            color: #fff;
            padding: 0.25rem 0.75rem;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 700;
            margin-top: 0.75rem;
            letter-spacing: 0.03em;
        }

        .hero-gb-price-row {
            display: flex;
            align-items: baseline;
            gap: 0.5rem;
            margin-top: 0.5rem;
        }

        .hero-gb-price-current {
            font-size: 1.8rem;
            font-weight: 800;
            color: #FF6B35;
        }

        .hero-gb-price-original {
            font-size: 1rem;
            color: #94A3B8;
            text-decoration: line-through;
        }

        /* 指标看板 */
        .stats-ribbon {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            padding: 1.5rem 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            text-align: center;
        }

        .stat-item {
            padding: 1rem;
        }

        .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
            line-height: 1;
        }

        .stat-label {
            font-size: 0.85rem;
            color: var(--text-light);
            margin-top: 0.35rem;
        }

        /* 板块通用 */
        .section {
            padding: 3.5rem 0;
        }

        .section-alt {
            background: var(--surface);
        }

        .section-dark {
            background: var(--secondary);
            color: #fff;
        }

        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 0.5rem;
            letter-spacing: -0.01em;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-light);
            margin-bottom: 2rem;
            max-width: 600px;
        }

        .section-dark .section-title {
            color: #fff;
        }

        .section-dark .section-subtitle {
            color: #CBD5E1;
        }

        /* 装备分类卡片 */
        .gear-category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        @media (min-width: 1024px) {
            .gear-category-grid {
                grid-template-columns: 1.2fr 1fr 0.8fr 1fr;
            }
            .gear-category-grid .gear-cat-card:nth-child(1) {
                grid-column: span 2;
            }
            .gear-category-grid .gear-cat-card:nth-child(4) {
                grid-column: span 2;
            }
        }

        .gear-cat-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            border: 1px solid var(--border);
            transition: all var(--transition-smooth);
            cursor: pointer;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            position: relative;
            overflow: hidden;
        }

        .gear-cat-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
            transform: translateY(-4px);
        }

        .gear-cat-card .gear-cat-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.4rem;
            flex-shrink: 0;
        }

        .gear-cat-card h4 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--secondary);
            margin: 0;
        }

        .gear-cat-card p {
            font-size: 0.85rem;
            color: var(--text-light);
            margin: 0;
            line-height: 1.5;
        }

        .gear-cat-card .gear-cat-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            margin-top: auto;
        }

        .gear-cat-card .gear-cat-link:hover {
            color: var(--primary-hover);
            gap: 0.5rem;
        }

        .gear-cat-card.featured {
            background: linear-gradient(135deg, #FFF7F3 0%, #fff 100%);
            border-color: rgba(255, 107, 53, 0.25);
        }

        /* 对比表格 */
        .compare-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            background: var(--surface);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
        }

        .compare-table thead th {
            background: var(--secondary);
            color: #fff;
            padding: 1rem 1.25rem;
            font-weight: 700;
            font-size: 0.95rem;
            text-align: center;
            white-space: nowrap;
        }

        .compare-table thead th:first-child {
            text-align: left;
            border-radius: var(--radius-lg) 0 0 0;
        }

        .compare-table thead th:last-child {
            border-radius: 0 var(--radius-lg) 0 0;
            background: var(--primary);
        }

        .compare-table tbody td {
            padding: 0.9rem 1.25rem;
            text-align: center;
            border-bottom: 1px solid var(--border);
            font-size: 0.9rem;
            color: var(--text);
        }

        .compare-table tbody td:first-child {
            text-align: left;
            font-weight: 600;
            color: var(--secondary);
        }

        .compare-table tbody tr:nth-child(even) {
            background: #F8FAFC;
        }

        .compare-table .icon-check {
            color: var(--success);
            font-size: 1.1rem;
        }

        .compare-table .icon-cross {
            color: #EF4444;
            font-size: 1.1rem;
        }

        .compare-table .icon-dash {
            color: #94A3B8;
        }

        .compare-highlight-col {
            background: rgba(255, 107, 53, 0.03);
        }

        .compare-table tbody td.compare-highlight-col {
            background: rgba(255, 107, 53, 0.04);
            font-weight: 500;
        }

        /* 深度内容区 */
        .deep-content-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.5rem;
            align-items: center;
        }

        .deep-content-block.reverse {
            direction: rtl;
        }

        .deep-content-block.reverse>* {
            direction: ltr;
        }

        .deep-content-text h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 1rem;
            line-height: 1.3;
        }

        .deep-content-text p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 0.75rem;
        }

        .deep-content-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .deep-content-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 16/11;
        }

        /* 新闻列表 */
        .news-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1rem;
        }

        .news-item {
            display: flex;
            gap: 1.25rem;
            padding: 1.25rem;
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            transition: all var(--transition-fast);
            align-items: flex-start;
        }

        .news-item:hover {
            box-shadow: var(--shadow-card);
            border-color: var(--border-focus);
        }

        .news-item.featured-news {
            grid-column: 1/-1;
            flex-direction: column;
            padding: 0;
            overflow: hidden;
            border-radius: var(--radius-lg);
        }

        .news-item.featured-news .news-featured-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }

        .news-item.featured-news .news-featured-body {
            padding: 1.25rem 1.5rem 1.5rem;
        }

        .news-date {
            font-size: 0.8rem;
            color: var(--primary);
            font-weight: 600;
            white-space: nowrap;
            min-width: 90px;
            padding-top: 2px;
        }

        .news-content h5 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--secondary);
            margin: 0 0 0.3rem 0;
        }

        .news-content p {
            font-size: 0.85rem;
            color: var(--text-light);
            margin: 0 0 0.5rem 0;
            line-height: 1.5;
        }

        .news-readmore {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 0.25rem;
        }

        .news-readmore:hover {
            color: var(--accent-hover);
            text-decoration: underline;
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 0.6rem;
            background: var(--surface);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-question {
            width: 100%;
            padding: 1rem 1.25rem;
            background: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 1rem;
            font-weight: 600;
            color: var(--secondary);
            text-align: left;
            transition: all var(--transition-fast);
            gap: 0.75rem;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 0.8rem;
            transition: all var(--transition-fast);
        }

        .faq-item.open .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 1.25rem 1.25rem;
        }

        .faq-answer p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        .faq-item.open {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.08);
        }

        .faq-item.open .faq-question {
            color: var(--primary);
            background: #FFFBF9;
        }

        /* CTA表单 */
        .cta-form-section {
            background: linear-gradient(160deg, #1E293B 0%, #0F172A 100%);
            padding: 3.5rem 0;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-form-section::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -60px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 107, 53, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.5rem;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .cta-form-info h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            letter-spacing: -0.01em;
        }

        .cta-form-info p {
            font-size: 0.95rem;
            color: #CBD5E1;
            line-height: 1.7;
            margin-bottom: 1.5rem;
        }

        .cta-form-info .cta-benefit-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .cta-form-info .cta-benefit-list li {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.4rem 0;
            font-size: 0.9rem;
            color: #E2E8F0;
        }

        .cta-form-info .cta-benefit-list li i {
            color: var(--success);
            font-size: 0.9rem;
        }

        .cta-form-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 2rem;
            box-shadow: var(--shadow-lg);
        }

        .cta-form-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 1.25rem;
            text-align: center;
        }

        .form-group {
            margin-bottom: 1rem;
        }

        .form-group label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-muted);
            margin-bottom: 0.35rem;
        }

        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            height: 46px;
            padding: 0 0.9rem;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            color: var(--text);
            background: #F8FAFC;
            transition: all var(--transition-fast);
        }

        .form-group textarea {
            height: 100px;
            padding: 0.75rem 0.9rem;
            resize: vertical;
        }

        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.2);
            background: #fff;
        }

        .btn-submit {
            width: 100%;
            padding: 0.85rem;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            border-radius: 25px;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.3);
        }

        .btn-submit:hover {
            background: var(--primary-hover);
            box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
            transform: translateY(-2px);
        }

        /* Footer */
        .site-footer {
            background: #0F172A;
            color: #E2E8F0;
            padding: 3rem 0 1.5rem;
            border-top: 4px solid var(--primary);
        }

        .footer-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.5rem;
            letter-spacing: -0.01em;
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1.25rem;
            margin: 1.25rem 0;
            padding-top: 1rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-links a {
            color: #94A3B8;
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: #fff;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            font-size: 0.78rem;
            color: #64748B;
            padding-top: 1rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            justify-content: space-between;
            align-items: center;
        }

        .footer-bottom a {
            color: #94A3B8;
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        /* 品牌介绍区 */
        .brand-intro-block {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 2.5rem;
            align-items: center;
            background: #F1F5F9;
            border-radius: var(--radius-lg);
            padding: 2rem;
            margin: 2rem 0;
        }

        .brand-intro-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .brand-intro-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        .brand-intro-text h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 0.75rem;
        }

        .brand-intro-text p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 0.6rem;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .hero-gb-content {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .hero-gb-right {
                display: none;
            }
            .hero-gb-left h1 {
                font-size: 2rem;
            }
            .gear-category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .gear-category-grid .gear-cat-card:nth-child(1),
            .gear-category-grid .gear-cat-card:nth-child(4) {
                grid-column: span 1;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .deep-content-block {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .deep-content-block.reverse {
                direction: ltr;
            }
            .cta-form-grid {
                grid-template-columns: 1fr;
            }
            .brand-intro-block {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .channel-row {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .hero-group-buy {
                padding: 2rem 0 2.5rem;
                min-height: auto;
            }
            .hero-gb-left h1 {
                font-size: 1.6rem;
            }
            .hero-gb-subtitle {
                font-size: 0.95rem;
            }
            .hero-gb-buttons {
                flex-direction: column;
            }
            .btn-gb-primary,
            .btn-gb-secondary {
                width: 100%;
                justify-content: center;
            }
            .gear-category-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 0.75rem;
            }
            .stat-number {
                font-size: 1.6rem;
            }
            .section {
                padding: 2.5rem 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .compare-table thead th,
            .compare-table tbody td {
                padding: 0.6rem 0.8rem;
                font-size: 0.8rem;
            }
            .news-item {
                flex-direction: column;
                gap: 0.5rem;
            }
            .news-date {
                min-width: auto;
            }
            .cta-form-card {
                padding: 1.25rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 0.5rem;
            }
            .brand-intro-block {
                padding: 1.25rem;
                gap: 1.25rem;
            }
        }

        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.5rem;
            }
            .stat-number {
                font-size: 1.4rem;
            }
            .hero-gb-progress-wrap {
                padding: 1rem;
            }
            .hero-gb-left h1 {
                font-size: 1.35rem;
            }
            .section-title {
                font-size: 1.25rem;
            }
            .compare-table-wrap {
                margin: 0 -1rem;
                border-radius: 0;
            }
        }

/* roulang page: category7 */
:root {
            --primary: #FF6B35;
            --primary-hover: #EA580C;
            --primary-light: rgba(255, 107, 53, 0.10);
            --primary-glow: rgba(255, 107, 53, 0.30);
            --secondary: #1E293B;
            --bg: #F8FAFC;
            --surface: #FFFFFF;
            --accent: #0EA5E9;
            --accent-hover: #0284C7;
            --success: #10B981;
            --warning: #F59E0B;
            --text: #334155;
            --text-muted: #475569;
            --text-light: #64748B;
            --border: #E2E8F0;
            --border-focus: #CBD5E1;
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-sm: 6px;
            --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.10), 0 4px 6px -4px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 40px -8px rgba(0, 0, 0, 0.12);
            --font-stack: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 1rem;
            }
        }

        .site-header {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 0;
            border-bottom: 1px solid var(--border);
        }

        .brand-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }

        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .brand-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .search-trigger {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            transition: all var(--transition-fast);
            font-size: 1rem;
        }

        .search-trigger:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .channel-row {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            padding: 0.5rem 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }

        .channel-row::-webkit-scrollbar {
            display: none;
        }

        .channel-link {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 1rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: 20px;
            white-space: nowrap;
            transition: all var(--transition-fast);
            position: relative;
        }

        .channel-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .channel-link.active {
            color: var(--primary);
            font-weight: 700;
            background: var(--primary-light);
        }

        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            padding: 8px;
            background: var(--bg);
            border-radius: var(--radius-sm);
            z-index: 1001;
            position: relative;
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--secondary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--surface);
            z-index: 999;
            padding: 5rem 1.5rem 2rem;
            flex-direction: column;
            gap: 0.5rem;
            overflow-y: auto;
        }

        .mobile-nav.open {
            display: flex;
        }

        .mobile-nav .channel-link {
            font-size: 1.1rem;
            padding: 0.75rem 1rem;
            border-radius: var(--radius-md);
        }

        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }
            .channel-row {
                display: none;
            }
            .channel-row.mobile-visible {
                display: flex;
                flex-direction: column;
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background: var(--surface);
                z-index: 999;
                padding: 5rem 1.5rem 2rem;
                gap: 0.25rem;
                overflow-y: auto;
            }
        }

        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 0.5rem;
            letter-spacing: -0.02em;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-light);
            margin-bottom: 2rem;
            max-width: 600px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.75rem 1.75rem;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: 25px;
            transition: all var(--transition-smooth);
            box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
            transform: translateY(-2px);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.7rem 1.5rem;
            background: transparent;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            border-radius: 25px;
            border: 2px solid var(--primary);
            transition: all var(--transition-smooth);
            white-space: nowrap;
        }

        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
        }

        .card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            transition: all var(--transition-smooth);
            overflow: hidden;
        }

        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: var(--primary);
        }

        .site-footer {
            background: var(--secondary);
            color: #CBD5E1;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }

        .footer-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.75rem;
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem 1.5rem;
            margin: 1.5rem 0;
        }

        .footer-links a {
            color: #94A3B8;
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--primary);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem 1.5rem;
            font-size: 0.8rem;
            color: #94A3B8;
            border-top: 1px solid rgba(148, 163, 184, 0.2);
            padding-top: 1.25rem;
            margin-top: 1.5rem;
        }

        .footer-bottom a {
            color: #94A3B8;
        }

        .footer-bottom a:hover {
            color: var(--primary);
        }

        @media (max-width: 768px) {
            .footer-links {
                gap: 0.5rem 1rem;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 0.4rem;
            }
        }

        .hero-member {
            background: linear-gradient(135deg, #1E293B 0%, #334155 40%, #1E293B 100%);
            padding: 3rem 0;
            position: relative;
            overflow: hidden;
        }

        .hero-member::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(255, 107, 53, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-member::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(14, 165, 233, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .member-card-wall {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 1.5rem;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .member-voucher {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 1.5rem 1.25rem;
            text-align: center;
            width: 180px;
            box-shadow: var(--shadow-card);
            border: 2px solid var(--border);
            transition: all var(--transition-smooth);
            position: relative;
            cursor: default;
        }

        .member-voucher:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .member-voucher.featured {
            width: 240px;
            padding: 2rem 1.5rem;
            border: 3px solid var(--primary);
            box-shadow: 0 8px 30px rgba(255, 107, 53, 0.35);
            background: linear-gradient(180deg, #FFF7F3 0%, #FFFFFF 40%);
            z-index: 2;
            transform: scale(1.05);
        }

        .member-voucher.featured:hover {
            transform: scale(1.08);
            box-shadow: 0 12px 40px rgba(255, 107, 53, 0.45);
        }

        .voucher-badge {
            display: inline-block;
            padding: 0.3rem 0.8rem;
            border-radius: 15px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            margin-bottom: 0.75rem;
        }

        .badge-bronze {
            background: #FDE8D0;
            color: #B45309;
        }
        .badge-silver {
            background: #E8ECF0;
            color: #475569;
        }
        .badge-gold {
            background: #FEF3C7;
            color: #B45309;
        }
        .badge-diamond {
            background: #E0F2FE;
            color: #0369A1;
        }

        .voucher-name {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 0.35rem;
        }

        .voucher-price {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 0.5rem;
        }

        .voucher-price small {
            font-size: 0.8rem;
            font-weight: 400;
            color: var(--text-light);
        }

        .voucher-perks {
            list-style: none;
            padding: 0;
            margin: 0.75rem 0;
            font-size: 0.8rem;
            color: var(--text-muted);
            text-align: left;
        }

        .voucher-perks li {
            padding: 0.25rem 0;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .voucher-perks li i {
            color: var(--success);
            font-size: 0.7rem;
            flex-shrink: 0;
        }

        .featured .voucher-price {
            font-size: 2.5rem;
        }

        @media (max-width: 768px) {
            .member-card-wall {
                flex-direction: column;
                align-items: center;
                gap: 1rem;
            }
            .member-voucher {
                width: 100%;
                max-width: 320px;
            }
            .member-voucher.featured {
                width: 100%;
                max-width: 360px;
                transform: scale(1);
            }
            .member-voucher.featured:hover {
                transform: scale(1.02);
            }
            .hero-member {
                padding: 2rem 0;
            }
        }

        .benefit-card {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            padding: 1.5rem;
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            transition: all var(--transition-smooth);
        }

        .benefit-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .benefit-icon {
            width: 50px;
            height: 50px;
            border-radius: var(--radius-md);
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.3rem;
            flex-shrink: 0;
        }

        .benefit-card h4 {
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 0.3rem;
            font-size: 1.05rem;
        }

        .benefit-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
            margin: 0;
        }

        .step-flow {
            display: flex;
            align-items: flex-start;
            gap: 1.5rem;
            flex-wrap: wrap;
            justify-content: center;
        }

        .step-item {
            text-align: center;
            flex: 1;
            min-width: 160px;
            max-width: 220px;
            position: relative;
        }

        .step-number {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 800;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 0.75rem;
            box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
        }

        .step-item h4 {
            font-weight: 700;
            color: var(--secondary);
            font-size: 1rem;
            margin-bottom: 0.3rem;
        }

        .step-item p {
            font-size: 0.85rem;
            color: var(--text-light);
            line-height: 1.5;
        }

        .step-connector {
            position: absolute;
            top: 25px;
            right: -50%;
            width: 100%;
            height: 2px;
            background: var(--border);
            z-index: 0;
            pointer-events: none;
        }

        @media (max-width: 768px) {
            .step-connector {
                display: none;
            }
            .step-flow {
                flex-direction: column;
                align-items: center;
            }
            .step-item {
                max-width: 100%;
            }
        }

        .faq-accordion {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
        }

        .faq-item {
            border-bottom: 1px solid var(--border);
            background: var(--surface);
        }

        .faq-item:last-child {
            border-bottom: none;
        }

        .faq-question {
            width: 100%;
            padding: 1.1rem 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            background: var(--surface);
            font-weight: 600;
            font-size: 1rem;
            color: var(--secondary);
            text-align: left;
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .faq-question:hover {
            background: #F8FAFC;
            color: var(--primary);
        }

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 0.8rem;
            transition: all var(--transition-smooth);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            padding: 0 1.5rem;
            background: #FAFBFC;
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 1rem 1.5rem;
        }

        .cta-section {
            background: linear-gradient(135deg, #FF6B35 0%, #EA580C 100%);
            border-radius: var(--radius-lg);
            padding: 3rem 2rem;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -50px;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            position: relative;
            z-index: 1;
        }

        .cta-section p {
            font-size: 1rem;
            opacity: 0.9;
            margin-bottom: 1.5rem;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
            position: relative;
            z-index: 1;
        }

        .form-input {
            width: 100%;
            height: 48px;
            padding: 0 1rem;
            border: 2px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            background: var(--surface);
            color: var(--text);
        }

        .form-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.25);
        }

        textarea.form-input {
            height: 120px;
            padding-top: 0.75rem;
            resize: vertical;
        }

        .section-spacing {
            padding: 3.5rem 0;
        }

        @media (max-width: 768px) {
            .section-spacing {
                padding: 2rem 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .cta-section {
                padding: 2rem 1.25rem;
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
        }

        .stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            justify-content: center;
        }

        .stat-card {
            text-align: center;
            padding: 1.5rem 1.25rem;
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            min-width: 140px;
            flex: 1;
            max-width: 200px;
            transition: all var(--transition-smooth);
        }

        .stat-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: var(--primary);
        }

        .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }

        .stat-label {
            font-size: 0.85rem;
            color: var(--text-light);
            margin-top: 0.4rem;
        }

        .brand-intro-block {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            display: flex;
            gap: 2rem;
            align-items: center;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
        }

        .brand-intro-block img {
            width: 280px;
            height: 200px;
            object-fit: cover;
            border-radius: var(--radius-md);
            flex-shrink: 0;
        }

        .brand-intro-block .intro-text h3 {
            font-weight: 700;
            color: var(--secondary);
            font-size: 1.3rem;
            margin-bottom: 0.75rem;
        }

        .brand-intro-block .intro-text p {
            color: var(--text-muted);
            line-height: 1.8;
            font-size: 0.95rem;
        }

        @media (max-width: 768px) {
            .brand-intro-block {
                flex-direction: column;
                padding: 1.5rem;
            }
            .brand-intro-block img {
                width: 100%;
                height: 180px;
            }
            .stat-card {
                max-width: 100%;
                min-width: 120px;
            }
        }