/* roulang page: index */
:root {
            --bg-primary: #0A0E17;
            --bg-elevated-1: #151922;
            --bg-elevated-2: #1E232E;
            --bg-elevated-3: #252B3B;
            --accent-primary: #FF0080;
            --accent-primary-hover: #E6006E;
            --accent-secondary: #00D9FF;
            --text-primary: #E8EAF0;
            --text-secondary: #9BA3B8;
            --text-muted: #5A6175;
            --border-color: #2A2F3D;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 24px;
            --radius-xl: 28px;
            --shadow-glow-pink: 0 0 16px rgba(255, 0, 128, 0.6);
            --shadow-glow-cyan: 0 0 16px rgba(0, 217, 255, 0.4);
            --shadow-card-hover: 0 8px 24px rgba(255, 0, 128, 0.3);
        }
        
        * {
            box-sizing: border-box;
        }
        
        body {
            margin: 0;
            padding: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }
        
        a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        
        a:hover {
            color: var(--accent-secondary);
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        button, input, select, textarea {
            font-family: inherit;
        }
        
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background-color: rgba(21, 25, 34, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            transition: background-color 0.3s ease;
        }
        
        .site-header.scrolled {
            background-color: var(--bg-elevated-1);
        }
        
        .nav-panel {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            padding: 0 48px;
            max-width: 1400px;
            margin: 0 auto;
        }
        
        .nav-logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            white-space: nowrap;
        }
        
        .nav-menu {
            display: flex;
            gap: 12px;
            align-items: center;
            flex: 1;
            justify-content: center;
        }
        
        .nav-item {
            background-color: var(--bg-elevated-2);
            padding: 12px 20px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-size: 0.9375rem;
            font-weight: 600;
            transition: all 0.3s ease;
            border-left: 2px solid transparent;
            position: relative;
        }
        
        .nav-item:hover, .nav-item.active {
            background-color: var(--bg-elevated-3);
            color: var(--text-primary);
            border-left-color: var(--accent-primary);
        }
        
        .nav-cta {
            background-color: var(--accent-primary);
            color: white;
            padding: 12px 24px;
            border-radius: var(--radius-lg);
            font-weight: 600;
            transition: all 0.3s ease;
            white-space: nowrap;
        }
        
        .nav-cta:hover {
            background-color: var(--accent-primary-hover);
            box-shadow: var(--shadow-glow-pink);
            color: white;
        }
        
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 8px;
        }
        
        .hero-section {
            min-height: 80vh;
            display: flex;
            align-items: center;
            padding: 120px 0 80px;
            background-color: var(--bg-primary);
            position: relative;
            overflow: hidden;
        }
        
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255, 0, 128, 0.15) 0%, transparent 70%);
            transform: translateX(-50%);
            pointer-events: none;
        }
        
        .hero-content {
            position: relative;
            z-index: 1;
        }
        
        .hero-text h1 {
            font-size: 2.8rem;
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 24px;
            color: var(--text-primary);
        }
        
        .hero-accent-line {
            width: 80px;
            height: 3px;
            background-color: var(--accent-primary);
            margin-bottom: 24px;
            animation: slideIn 0.6s ease-out;
        }
        
        @keyframes slideIn {
            from {
                width: 0;
                opacity: 0;
            }
            to {
                width: 80px;
                opacity: 1;
            }
        }
        
        .hero-text p {
            font-size: 1.125rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 520px;
        }
        
        .hero-cta-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        
        .btn-primary {
            background-color: var(--accent-primary);
            color: white;
            padding: 16px 32px;
            border-radius: var(--radius-xl);
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        
        .btn-primary:hover {
            background-color: var(--accent-primary-hover);
            box-shadow: var(--shadow-glow-pink);
            transform: translateY(-2px);
            color: white;
        }
        
        .btn-secondary {
            background-color: transparent;
            color: var(--accent-secondary);
            padding: 16px 32px;
            border-radius: var(--radius-xl);
            font-weight: 600;
            font-size: 1rem;
            border: 1px solid var(--accent-secondary);
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .btn-secondary:hover {
            background-color: var(--accent-secondary);
            color: var(--bg-primary);
        }
        
        .hero-visual {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
        }
        
        .poster-card {
            aspect-ratio: 16 / 9;
            background-color: var(--bg-elevated-2);
            border-radius: var(--radius-sm);
            border-top: 1px solid var(--accent-secondary);
            overflow: hidden;
            position: relative;
            transition: all 0.3s ease;
        }
        
        .poster-card::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(0, 217, 255, 0.1) 0%, rgba(255, 0, 128, 0.1) 100%);
        }
        
        .poster-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        
        .section {
            padding: 80px 0;
            position: relative;
        }
        
        .section-alt {
            background-color: #0F1218;
        }
        
        .section-elevated {
            background-color: var(--bg-elevated-1);
        }
        
        .section-title {
            text-align: center;
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        
        .section-subtitle {
            text-align: center;
            font-size: 1.125rem;
            color: var(--text-secondary);
            margin-bottom: 56px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .feature-card {
            background-color: var(--bg-elevated-2);
            border-radius: var(--radius-md);
            padding: 32px;
            border-top: 2px solid var(--accent-secondary);
            transition: all 0.3s ease;
            height: 100%;
        }
        
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 32px rgba(0, 217, 255, 0.2);
        }
        
        .feature-icon {
            width: 64px;
            height: 64px;
            background-color: var(--bg-elevated-3);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.75rem;
            color: var(--accent-secondary);
            margin-bottom: 20px;
        }
        
        .feature-card h3 {
            font-size: 1.4rem;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        
        .feature-card p {
            font-size: 0.9375rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        
        .stat-card {
            text-align: center;
            padding: 40px 24px;
            background-color: transparent;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            transition: all 0.3s ease;
        }
        
        .stat-card:hover {
            border-color: var(--accent-primary);
            background-color: rgba(255, 0, 128, 0.05);
        }
        
        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--accent-primary);
            margin-bottom: 8px;
            line-height: 1;
        }
        
        .stat-label {
            font-size: 0.875rem;
            color: var(--text-secondary);
        }
        
        .testimonial-card {
            background-color: var(--bg-elevated-2);
            border-radius: var(--radius-md);
            padding: 32px;
            border-left: 3px solid var(--accent-secondary);
            margin-bottom: 24px;
        }
        
        .testimonial-quote {
            font-size: 1.5rem;
            color: var(--accent-secondary);
            margin-bottom: 16px;
        }
        
        .testimonial-text {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        
        .testimonial-author {
            font-size: 0.875rem;
            color: var(--text-muted);
            font-style: italic;
        }
        
        .zone-card {
            background-color: var(--bg-elevated-2);
            border-radius: var(--radius-md);
            padding: 0;
            overflow: hidden;
            transition: all 0.3s ease;
            border: 1px solid transparent;
        }
        
        .zone-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--accent-primary);
        }
        
        .zone-card-image {
            width: 100%;
            aspect-ratio: 16 / 9;
            background: linear-gradient(135deg, var(--bg-elevated-3) 0%, var(--bg-elevated-2) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3rem;
            color: var(--accent-primary);
            border-bottom: 2px solid var(--accent-primary);
        }
        
        .zone-card-content {
            padding: 24px;
        }
        
        .zone-card h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        
        .zone-card p {
            font-size: 0.9375rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
        }
        
        .zone-tag {
            display: inline-block;
            background-color: rgba(255, 0, 128, 0.1);
            color: var(--accent-primary);
            padding: 6px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-right: 8px;
            margin-bottom: 8px;
        }
        
        .faq-item {
            background-color: var(--bg-elevated-2);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            border-left: 2px solid var(--accent-secondary);
            margin-bottom: 16px;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .faq-item:hover {
            background-color: var(--bg-elevated-3);
        }
        
        .faq-question {
            font-size: 1.125rem;
            font-weight: 600;
            color: var(--text-primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .faq-answer {
            font-size: 0.9375rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-top: 16px;
            padding-top: 16px;
            border-top: 1px solid var(--border-color);
        }
        
        .cta-section {
            background-color: #0F1218;
            padding: 100px 0;
            text-align: center;
        }
        
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        
        .cta-section p {
            font-size: 1.125rem;
            color: var(--text-secondary);
            margin-bottom: 40px;
        }
        
        .article-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }
        
        .article-item:hover {
            padding-left: 12px;
        }
        
        .article-meta {
            display: flex;
            gap: 16px;
            font-size: 0.875rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        
        .article-title {
            font-size: 1.125rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
            transition: color 0.3s ease;
        }
        
        .article-item:hover .article-title {
            color: var(--accent-primary);
        }
        
        .article-excerpt {
            font-size: 0.9375rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        
        .sidebar-widget {
            background-color: var(--bg-elevated-2);
            border-radius: var(--radius-md);
            padding: 24px;
            margin-bottom: 24px;
        }
        
        .sidebar-widget h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 20px;
            color: var(--text-primary);
            border-bottom: 2px solid var(--accent-primary);
            padding-bottom: 12px;
        }
        
        .sidebar-link {
            display: block;
            padding: 12px 0;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }
        
        .sidebar-link:last-child {
            border-bottom: none;
        }
        
        .sidebar-link:hover {
            color: var(--accent-primary);
            padding-left: 8px;
        }
        
        .site-footer {
            background-color: #0F1218;
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }
        
        .footer-section {
            margin-bottom: 40px;
        }
        
        .footer-section h4 {
            font-size: 1.125rem;
            font-weight: 600;
            margin-bottom: 20px;
            color: var(--text-primary);
        }
        
        .footer-link {
            display: block;
            padding: 8px 0;
            color: var(--text-secondary);
            font-size: 0.9375rem;
            transition: color 0.3s ease;
        }
        
        .footer-link:hover {
            color: var(--accent-secondary);
        }
        
        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid var(--border-color);
            color: var(--text-muted);
            font-size: 0.875rem;
        }
        
        .container-custom {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 48px;
        }
        
        .price-card {
            background-color: var(--bg-elevated-2);
            border-radius: var(--radius-md);
            padding: 40px 32px;
            text-align: center;
            border: 2px solid transparent;
            transition: all 0.3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        
        .price-card.featured {
            border-color: var(--accent-primary);
            background-color: rgba(255, 0, 128, 0.05);
            transform: scale(1.05);
        }
        
        .price-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-card-hover);
        }
        
        .price-badge {
            display: inline-block;
            background-color: var(--accent-primary);
            color: white;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        
        .price-title {
            font-size: 1.75rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        
        .price-amount {
            font-size: 3rem;
            font-weight: 700;
            color: var(--accent-primary);
            margin-bottom: 8px;
        }
        
        .price-period {
            font-size: 0.875rem;
            color: var(--text-secondary);
            margin-bottom: 24px;
        }
        
        .price-features {
            list-style: none;
            margin: 0 0 32px 0;
            padding: 0;
            flex: 1;
        }
        
        .price-features li {
            padding: 12px 0;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border-color);
        }
        
        .price-features li:last-child {
            border-bottom: none;
        }
        
        .step-item {
            display: flex;
            gap: 24px;
            margin-bottom: 40px;
            align-items: flex-start;
        }
        
        .step-number {
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: 700;
            color: white;
            flex-shrink: 0;
        }
        
        .step-content h3 {
            font-size: 1.4rem;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        
        .step-content p {
            font-size: 0.9375rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        
        @media screen and (max-width: 1024px) {
            .container-custom {
                padding: 0 32px;
            }
            
            .nav-panel {
                padding: 0 32px;
            }
            
            .hero-text h1 {
                font-size: 2.2rem;
            }
        }
        
        @media screen and (max-width: 768px) {
            .mobile-menu-toggle {
                display: block;
            }
            
            .nav-menu {
                display: none;
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background-color: var(--bg-elevated-1);
                flex-direction: column;
                padding: 24px;
                gap: 12px;
                border-bottom: 1px solid var(--border-color);
            }
            
            .nav-menu.active {
                display: flex;
            }
            
            .nav-item {
                width: 100%;
                text-align: center;
            }
            
            .nav-cta {
                width: 100%;
                text-align: center;
            }
            
            .container-custom {
                padding: 0 20px;
            }
            
            .nav-panel {
                padding: 0 20px;
                height: 64px;
            }
            
            .hero-section {
                padding: 100px 0 60px;
                min-height: auto;
            }
            
            .hero-text h1 {
                font-size: 1.8rem;
            }
            
            .hero-text p {
                font-size: 1rem;
            }
            
            .hero-visual {
                margin-top: 40px;
                grid-template-columns: repeat(2, 1fr);
            }
            
            .section {
                padding: 60px 0;
            }
            
            .section-title {
                font-size: 1.75rem;
            }
            
            .section-subtitle {
                font-size: 1rem;
            }
            
            .stat-number {
                font-size: 2.2rem;
            }
            
            .price-card.featured {
                transform: scale(1);
            }
            
            .step-item {
                flex-direction: column;
                gap: 16px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0A0E17;
            --bg-secondary: #151922;
            --bg-tertiary: #1E232E;
            --bg-hover: #252B3B;
            --accent-primary: #FF0080;
            --accent-secondary: #00D9FF;
            --text-primary: #E8EAF0;
            --text-secondary: #9BA3B8;
            --border-color: #2A2F3D;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 24px;
            --shadow-glow-pink: 0 0 16px rgba(255, 0, 128, 0.6);
            --shadow-glow-cyan: 0 0 16px rgba(0, 217, 255, 0.6);
            --shadow-card: 0 8px 24px rgba(255, 0, 128, 0.3);
        }
        
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
        }
        
        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        button {
            border: none;
            cursor: pointer;
            font-family: inherit;
        }
        
        input, textarea {
            font-family: inherit;
        }
        
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 48px;
        }
        
        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-color);
        }
        
        .nav-panel {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            padding: 0 48px;
            background: var(--bg-secondary);
        }
        
        .nav-logo {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-primary);
            position: relative;
        }
        
        .nav-logo::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 60px;
            height: 2px;
            background: var(--accent-primary);
        }
        
        .nav-menu {
            display: flex;
            gap: 12px;
        }
        
        .nav-item {
            padding: 12px 20px;
            background: var(--bg-tertiary);
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9375rem;
            color: var(--text-secondary);
            transition: all 0.3s ease;
            position: relative;
        }
        
        .nav-item:hover {
            background: var(--bg-hover);
            color: var(--text-primary);
        }
        
        .nav-item:hover::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--accent-primary);
        }
        
        .nav-item.active {
            background: var(--bg-hover);
            color: var(--text-primary);
        }
        
        .nav-item.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--accent-primary);
        }
        
        .nav-cta {
            padding: 12px 24px;
            background: var(--accent-primary);
            color: white;
            border-radius: var(--radius-lg);
            font-weight: 600;
            transition: all 0.3s ease;
        }
        
        .nav-cta:hover {
            background: #E6006E;
            box-shadow: var(--shadow-glow-pink);
        }
        
        .mobile-menu-toggle {
            display: none;
            background: var(--bg-tertiary);
            color: var(--text-primary);
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 1.2rem;
        }
        
        /* Breadcrumb */
        .breadcrumb-section {
            padding: 40px 0 20px;
        }
        
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.875rem;
            color: var(--text-secondary);
        }
        
        .breadcrumb a {
            color: var(--accent-secondary);
        }
        
        .breadcrumb a:hover {
            color: var(--text-primary);
        }
        
        .breadcrumb-separator {
            color: var(--border-color);
        }
        
        /* Category Hero */
        .category-hero {
            padding: 60px 0 80px;
            text-align: center;
        }
        
        .category-hero h1 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 20px;
            position: relative;
            display: inline-block;
        }
        
        .category-hero h1::after {
            content: '';
            position: absolute;
            bottom: -12px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background: var(--accent-primary);
        }
        
        .category-subtitle {
            font-size: 1.125rem;
            color: var(--text-secondary);
            margin-top: 32px;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }
        
        /* Stats Bar */
        .stats-bar {
            background: var(--bg-secondary);
            padding: 40px 0;
            margin-bottom: 60px;
        }
        
        .stats-grid {
            display: flex;
            justify-content: space-around;
            flex-wrap: wrap;
            gap: 40px;
        }
        
        .stat-item {
            text-align: center;
        }
        
        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--accent-primary);
            line-height: 1;
        }
        
        .stat-label {
            font-size: 0.875rem;
            color: var(--text-secondary);
            margin-top: 12px;
        }
        
        /* Video Grid Section */
        .video-grid-section {
            padding: 60px 0;
        }
        
        .section-header {
            margin-bottom: 48px;
        }
        
        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        
        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
        }
        
        .video-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        
        .video-card {
            background: var(--bg-tertiary);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all 0.3s ease;
            cursor: pointer;
            border-top: 1px solid var(--accent-primary);
        }
        
        .video-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }
        
        .video-thumbnail {
            width: 100%;
            aspect-ratio: 16/9;
            background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }
        
        .video-thumbnail::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(45deg, transparent 30%, rgba(255, 0, 128, 0.1) 50%, transparent 70%);
            animation: shimmer 3s infinite;
        }
        
        @keyframes shimmer {
            0% { transform: translateX(-100%); }
            100% { transform: translateX(100%); }
        }
        
        .play-icon {
            font-size: 3rem;
            color: var(--accent-primary);
            z-index: 1;
        }
        
        .video-info {
            padding: 16px;
            background: var(--bg-secondary);
        }
        
        .video-title {
            font-size: 0.9375rem;
            font-weight: 600;
            margin-bottom: 8px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        
        .video-meta {
            display: flex;
            gap: 12px;
            font-size: 0.75rem;
            color: var(--text-secondary);
        }
        
        .video-tag {
            background: rgba(255, 0, 128, 0.15);
            color: var(--accent-primary);
            padding: 4px 10px;
            border-radius: 12px;
            font-size: 0.75rem;
        }
        
        /* Features Section */
        .features-section {
            padding: 80px 0;
            background: #0F1218;
        }
        
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            margin-top: 48px;
        }
        
        .feature-card {
            background: var(--bg-tertiary);
            padding: 40px 32px;
            border-radius: var(--radius-md);
            border-top: 2px solid var(--accent-secondary);
            text-align: center;
        }
        
        .feature-icon {
            width: 64px;
            height: 64px;
            background: var(--bg-hover);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 24px;
            font-size: 2rem;
            color: var(--accent-secondary);
        }
        
        .feature-card h3 {
            font-size: 1.4rem;
            margin-bottom: 16px;
        }
        
        .feature-card p {
            font-size: 0.9375rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        
        /* FAQ Section */
        .faq-section {
            padding: 80px 0;
        }
        
        .faq-list {
            max-width: 900px;
            margin: 48px auto 0;
        }
        
        .faq-item {
            background: var(--bg-tertiary);
            border-radius: var(--radius-sm);
            padding: 24px;
            margin-bottom: 16px;
            border-left: 2px solid var(--accent-secondary);
        }
        
        .faq-question {
            font-size: 1.125rem;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        
        .faq-answer {
            font-size: 0.9375rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        
        /* CTA Section */
        .cta-section {
            padding: 100px 0;
            background: #0F1218;
            text-align: center;
        }
        
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 20px;
        }
        
        .cta-subtitle {
            font-size: 1.125rem;
            color: var(--text-secondary);
            margin-bottom: 40px;
        }
        
        .cta-button {
            display: inline-block;
            padding: 16px 48px;
            background: var(--accent-primary);
            color: white;
            border-radius: 28px;
            font-size: 1.125rem;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        
        .cta-button:hover {
            background: #E6006E;
            box-shadow: var(--shadow-glow-pink);
            transform: translateY(-2px);
        }
        
        /* Footer */
        .site-footer {
            background: #0F1218;
            border-top: 1px solid var(--border-color);
            padding: 60px 0 0;
        }
        
        .footer-section {
            margin-bottom: 40px;
        }
        
        .footer-section h4 {
            font-size: 1.125rem;
            font-weight: 600;
            margin-bottom: 20px;
            color: var(--text-primary);
        }
        
        .footer-link {
            display: block;
            color: var(--text-secondary);
            margin-bottom: 12px;
            font-size: 0.9375rem;
            transition: color 0.3s ease;
        }
        
        .footer-link:hover {
            color: var(--accent-secondary);
        }
        
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding: 32px 0;
            text-align: center;
            margin-top: 40px;
        }
        
        .footer-bottom p {
            font-size: 0.875rem;
            color: #5A6175;
        }
        
        /* Responsive */
        @media screen and (max-width: 1023px) {
            .container-custom {
                padding: 0 32px;
            }
            
            .nav-panel {
                padding: 0 32px;
            }
            
            .video-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 20px;
            }
            
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        
        @media screen and (max-width: 767px) {
            .container-custom {
                padding: 0 20px;
            }
            
            .nav-panel {
                padding: 0 20px;
            }
            
            .nav-menu {
                display: none;
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--bg-secondary);
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
            }
            
            .nav-menu.active {
                display: flex;
            }
            
            .nav-item {
                width: 100%;
            }
            
            .nav-cta {
                display: none;
            }
            
            .mobile-menu-toggle {
                display: block;
            }
            
            .category-hero h1 {
                font-size: 1.8rem;
            }
            
            .category-subtitle {
                font-size: 1rem;
            }
            
            .stats-grid {
                gap: 30px;
            }
            
            .stat-number {
                font-size: 2.5rem;
            }
            
            .video-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            
            .features-grid {
                grid-template-columns: 1fr;
            }
            
            .cta-section h2 {
                font-size: 1.8rem;
            }
            
            .section-title {
                font-size: 1.5rem;
            }
        }
        
        @media screen and (max-width: 520px) {
            .video-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0A0E17;
            --bg-secondary: #0F1218;
            --surface-1: #151922;
            --surface-2: #1E232E;
            --surface-3: #252B3B;
            --accent-magenta: #FF0080;
            --accent-magenta-hover: #E6006E;
            --accent-cyan: #00D9FF;
            --text-primary: #E8EAF0;
            --text-secondary: #9BA3B8;
            --text-muted: #5A6175;
            --border-color: #2A2F3D;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 24px;
            --spacing-unit: 1rem;
            --shadow-neon-magenta: 0 0 16px rgba(255, 0, 128, 0.6);
            --shadow-neon-cyan: 0 0 16px rgba(0, 217, 255, 0.5);
            --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.4);
            --shadow-card-hover: 0 8px 24px rgba(255, 0, 128, 0.3);
        }
        
        * {
            box-sizing: border-box;
        }
        
        body {
            margin: 0;
            padding: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 1rem;
            overflow-x: hidden;
        }
        
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.3s ease;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        button, input, textarea {
            font-family: inherit;
        }
        
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 48px;
        }
        
        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(21, 25, 34, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
        }
        
        .nav-panel {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            padding: 0 48px;
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .nav-logo {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-primary);
            white-space: nowrap;
        }
        
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .nav-item {
            position: relative;
            padding: 12px 20px;
            border-radius: var(--radius-sm);
            background: var(--surface-2);
            color: var(--text-secondary);
            font-size: 0.9375rem;
            font-weight: 600;
            transition: all 0.3s ease;
            min-width: 90px;
            text-align: center;
        }
        
        .nav-item:hover {
            background: var(--surface-3);
            color: var(--text-primary);
        }
        
        .nav-item.active {
            background: var(--surface-3);
            color: var(--text-primary);
            border-left: 2px solid var(--accent-magenta);
        }
        
        .nav-cta {
            background: var(--accent-magenta);
            color: white;
            padding: 10px 24px;
            border-radius: var(--radius-lg);
            font-weight: 600;
            font-size: 0.9375rem;
            transition: all 0.3s ease;
        }
        
        .nav-cta:hover {
            background: var(--accent-magenta-hover);
            box-shadow: var(--shadow-neon-magenta);
            transform: translateY(-1px);
        }
        
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 8px;
        }
        
        /* Breadcrumb */
        .breadcrumb-section {
            padding: 24px 0;
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-color);
        }
        
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.875rem;
            color: var(--text-secondary);
        }
        
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color 0.3s ease;
        }
        
        .breadcrumb a:hover {
            color: var(--accent-cyan);
        }
        
        .breadcrumb-current {
            color: var(--text-primary);
        }
        
        /* Hero Section */
        .hero-zone {
            background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
            padding: 80px 0 100px;
            position: relative;
            overflow: hidden;
        }
        
        .hero-zone::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-magenta) 0%, var(--accent-cyan) 100%);
            animation: neonSweep 2s ease-out;
        }
        
        @keyframes neonSweep {
            from {
                transform: translateX(-100%);
            }
            to {
                transform: translateX(0);
            }
        }
        
        .hero-content-wrapper {
            display: flex;
            align-items: center;
            gap: 60px;
        }
        
        .hero-text {
            flex: 1;
        }
        
        .hero-badge {
            display: inline-block;
            background: rgba(255, 0, 128, 0.15);
            color: var(--accent-magenta);
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.875rem;
            font-weight: 600;
            margin-bottom: 20px;
            border: 1px solid rgba(255, 0, 128, 0.3);
        }
        
        .hero-zone h1 {
            font-size: 2.8rem;
            font-weight: 700;
            line-height: 1.2;
            margin: 0 0 24px 0;
            color: var(--text-primary);
        }
        
        .hero-neon-line {
            width: 80px;
            height: 3px;
            background: var(--accent-magenta);
            margin: 24px 0;
            box-shadow: var(--shadow-neon-magenta);
        }
        
        .hero-description {
            font-size: 1.125rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 32px;
        }
        
        .hero-features {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 36px;
        }
        
        .hero-feature-item {
            display: flex;
            align-items: center;
            gap: 10px;
            background: var(--surface-1);
            padding: 12px 20px;
            border-radius: var(--radius-sm);
            font-size: 0.9375rem;
            color: var(--text-primary);
        }
        
        .hero-feature-item i {
            color: var(--accent-cyan);
            font-size: 1.1rem;
        }
        
        .hero-cta-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        
        .btn-primary {
            background: var(--accent-magenta);
            color: white;
            padding: 14px 32px;
            border-radius: var(--radius-lg);
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-block;
        }
        
        .btn-primary:hover {
            background: var(--accent-magenta-hover);
            box-shadow: var(--shadow-neon-magenta);
            transform: translateY(-2px);
        }
        
        .btn-secondary {
            background: transparent;
            color: var(--accent-cyan);
            padding: 14px 32px;
            border-radius: var(--radius-lg);
            font-weight: 600;
            font-size: 1rem;
            border: 1px solid var(--accent-cyan);
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-block;
        }
        
        .btn-secondary:hover {
            background: var(--accent-cyan);
            color: var(--bg-primary);
        }
        
        .hero-visual {
            flex: 1;
            position: relative;
        }
        
        .video-preview-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        
        .preview-card {
            background: var(--surface-2);
            border-radius: var(--radius-md);
            overflow: hidden;
            border-top: 2px solid var(--accent-cyan);
            transition: all 0.3s ease;
            cursor: pointer;
        }
        
        .preview-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        
        .preview-thumbnail {
            width: 100%;
            height: 140px;
            background: linear-gradient(135deg, #1E232E 0%, #252B3B 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }
        
        .preview-thumbnail i {
            font-size: 2rem;
            color: var(--text-muted);
        }
        
        .preview-info {
            padding: 16px;
            background: var(--surface-1);
        }
        
        .preview-title {
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        
        .preview-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.75rem;
            color: var(--text-muted);
        }
        
        /* Features Section */
        .features-section {
            background: var(--bg-secondary);
            padding: 80px 0;
        }
        
        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }
        
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 16px 0;
        }
        
        .section-subtitle {
            font-size: 1.125rem;
            color: var(--text-secondary);
            max-width: 700px;
            margin: 0 auto;
        }
        
        .feature-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
        }
        
        .feature-card {
            background: var(--surface-2);
            border-radius: var(--radius-md);
            padding: 36px;
            border-top: 2px solid var(--accent-cyan);
            transition: all 0.3s ease;
        }
        
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        
        .feature-icon {
            width: 64px;
            height: 64px;
            background: var(--surface-3);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
        }
        
        .feature-icon i {
            font-size: 1.75rem;
            color: var(--accent-cyan);
        }
        
        .feature-card h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 16px 0;
        }
        
        .feature-card p {
            font-size: 0.9375rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }
        
        /* Stats Section */
        .stats-section {
            background: var(--bg-primary);
            padding: 80px 0;
        }
        
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 32px;
        }
        
        .stat-card {
            background: transparent;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 40px 24px;
            text-align: center;
            transition: all 0.3s ease;
        }
        
        .stat-card:hover {
            border-color: var(--accent-magenta);
            box-shadow: 0 0 20px rgba(255, 0, 128, 0.2);
        }
        
        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--accent-magenta);
            margin-bottom: 12px;
            line-height: 1;
        }
        
        .stat-label {
            font-size: 0.9375rem;
            color: var(--text-secondary);
        }
        
        /* Content Showcase Section */
        .content-showcase {
            background: var(--surface-1);
            padding: 80px 0;
        }
        
        .showcase-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
            margin-top: 40px;
        }
        
        .showcase-item {
            background: var(--surface-2);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s ease;
            cursor: pointer;
        }
        
        .showcase-item:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
        }
        
        .showcase-image {
            width: 100%;
            aspect-ratio: 16/9;
            background: linear-gradient(135deg, #1E232E 0%, #252B3B 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }
        
        .showcase-image::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--accent-cyan);
        }
        
        .showcase-image i {
            font-size: 2.5rem;
            color: var(--text-muted);
        }
        
        .showcase-content {
            padding: 20px;
        }
        
        .showcase-category {
            display: inline-block;
            background: rgba(0, 217, 255, 0.15);
            color: var(--accent-cyan);
            padding: 4px 12px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 12px;
        }
        
        .showcase-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin: 0 0 8px 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        
        .showcase-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8125rem;
            color: var(--text-muted);
        }
        
        /* Testimonials Section */
        .testimonials-section {
            background: var(--bg-secondary);
            padding: 80px 0;
        }
        
        .testimonial-cards {
            display: grid;grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 32px;
            margin-top: 40px;
        }
        
        .testimonial-card {
            background: var(--surface-2);
            border-radius: var(--radius-md);
            padding: 32px;
            border-left: 3px solid var(--accent-cyan);
            transition: all 0.3s ease;
        }
        
        .testimonial-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        
        .testimonial-quote {
            font-size: 1.5rem;
            color: var(--accent-cyan);
            margin-bottom: 16px;
        }
        
        .testimonial-text {
            font-size: 0.9375rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .author-avatar {
            width: 48px;
            height: 48px;
            background: var(--surface-3);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .author-avatar i {
            color: var(--accent-magenta);
            font-size: 1.25rem;
        }
        
        .author-info {
            flex: 1;
        }
        
        .author-name {
            font-size: 0.9375rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        
        .author-tag {
            font-size: 0.8125rem;
            color: var(--text-muted);
        }
        
        /* FAQ Section */
        .faq-section {
            background: var(--bg-primary);
            padding: 80px 0;
        }
        
        .faq-container {
            max-width: 900px;
            margin: 40px auto 0;
        }
        
        .faq-item {
            background: var(--surface-2);
            border-radius: var(--radius-sm);
            margin-bottom: 16px;
            border-left: 2px solid var(--accent-cyan);
            overflow: hidden;
        }
        
        .faq-question {
            padding: 20px 24px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: background 0.3s ease;
        }
        
        .faq-question:hover {
            background: var(--surface-3);
        }
        
        .faq-question-text {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin: 0;
        }
        
        .faq-icon {
            color: var(--accent-cyan);
            font-size: 1.25rem;
            transition: transform 0.3s ease;
        }
        
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }
        
        .faq-item.active .faq-answer {
            max-height: 500px;
        }
        
        .faq-answer-text {
            padding: 0 24px 20px 24px;
            font-size: 0.9375rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        
        /* CTA Section */
        .cta-section {
            background: var(--bg-secondary);
            padding: 100px 0;
            text-align: center;
        }
        
        .cta-content {
            max-width: 700px;
            margin: 0 auto;
        }
        
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 20px 0;
        }
        
        .cta-section p {
            font-size: 1.125rem;
            color: var(--text-secondary);
            margin-bottom: 36px;
        }
        
        .cta-button {
            background: var(--accent-magenta);
            color: white;
            padding: 16px 48px;
            border-radius: 28px;
            font-weight: 600;
            font-size: 1.125rem;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-block;
        }
        
        .cta-button:hover {
            background: var(--accent-magenta-hover);
            box-shadow: var(--shadow-neon-magenta);
            transform: translateY(-2px);
        }
        
        /* Footer */
        .site-footer {
            background: var(--surface-1);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 0 0;
        }
        
        .footer-section {
            margin-bottom: 40px;
        }
        
        .footer-section h4 {
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 20px 0;
        }
        
        .footer-link {
            display: block;
            color: var(--text-secondary);
            font-size: 0.9375rem;
            margin-bottom: 12px;
            transition: color 0.3s ease;
        }
        
        .footer-link:hover {
            color: var(--accent-cyan);
        }
        
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding: 24px 0;
            text-align: center;
            margin-top: 40px;
        }
        
        .footer-bottom p {
            margin: 0;
            font-size: 0.875rem;
            color: var(--text-muted);
        }
        
        /* Responsive */
        @media screen and (max-width: 1024px) {
            .container-custom {
                padding: 0 32px;
            }
            
            .nav-panel {
                padding: 0 32px;
            }
            
            .hero-content-wrapper {
                gap: 40px;
            }
        }
        
        @media screen and (max-width: 768px) {
            .container-custom {
                padding: 0 20px;
            }
            
            .nav-panel {
                padding: 0 20px;
            }
            
            .nav-menu {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--surface-1);
                flex-direction: column;
                padding: 20px;
                gap: 12px;
                transform: translateX(-100%);
                transition: transform 0.3s ease;
                box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
            }
            
            .nav-menu.active {
                transform: translateX(0);
            }
            
            .nav-item {
                width: 100%;
            }
            
            .mobile-menu-toggle {
                display: block;
            }
            
            .hero-zone {
                padding: 60px 0 80px;
            }
            
            .hero-content-wrapper {
                flex-direction: column;
                gap: 40px;
            }
            
            .hero-zone h1 {
                font-size: 1.8rem;
            }
            
            .hero-description {
                font-size: 1rem;
            }
            
            .video-preview-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            
            .preview-thumbnail {
                height: 100px;
            }
            
            .feature-cards,
            .stats-grid,
            .showcase-grid,
            .testimonial-cards {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            
            .section-title {
                font-size: 1.75rem;
            }
            
            .section-subtitle {
                font-size: 1rem;
            }
            
            .cta-section h2 {
                font-size: 1.75rem;
            }
            
            .cta-section p {
                font-size: 1rem;
            }
        }
        
        @media screen and (max-width: 520px) {
            .hero-cta-group {
                flex-direction: column;
            }
            
            .btn-primary,
            .btn-secondary {
                width: 100%;
                text-align: center;
            }
            
            .video-preview-grid {
                grid-template-columns: 1fr;
            }
        }