/* roulang page: index */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.75);
            --accent-primary: #0052FF;
            --accent-secondary: #00F0FF;
            --accent-glow: rgba(0, 240, 255, 0.5);
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --border-color: rgba(0, 82, 255, 0.3);
            --border-hover: rgba(0, 240, 255, 0.6);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
            --shadow-glow: 0 0 15px rgba(0, 240, 255, 0.5);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            transition: var(--transition);
        }
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }
        .glass-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .btn-primary {
            background: linear-gradient(135deg, #0052FF, #00F0FF);
            color: #fff;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            box-shadow: 0 4px 20px rgba(0, 82, 255, 0.4);
            transition: var(--transition);
        }
        .btn-primary:hover {
            box-shadow: 0 6px 30px rgba(0, 240, 255, 0.6);
            transform: translateY(-2px);
            filter: brightness(1.1);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            border: 2px solid var(--accent-secondary);
            transition: var(--transition);
        }
        .btn-outline:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
            transform: translateY(-2px);
        }
        .btn-outline:focus,
        .btn-primary:focus {
            outline: 3px solid rgba(0, 240, 255, 0.5);
            outline-offset: 2px;
        }
        header {
            background: rgba(8, 9, 15, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0, 82, 255, 0.2);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            font-size: 1.4rem;
            font-weight: 800;
            background: linear-gradient(135deg, #0052FF, #00F0FF);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            white-space: nowrap;
            letter-spacing: -0.5px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-links a {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-secondary);
            position: relative;
            padding: 4px 0;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-secondary);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-secondary);
            transition: var(--transition);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-auth {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .btn-login {
            background: transparent;
            color: var(--text-primary);
            padding: 10px 20px;
            font-weight: 600;
            border: none;
            font-size: 0.95rem;
        }
        .btn-login:hover {
            color: var(--accent-secondary);
        }
        .btn-signup {
            background: var(--accent-primary);
            color: #fff;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 700;
            border: none;
            font-size: 0.95rem;
            box-shadow: 0 4px 15px rgba(0, 82, 255, 0.4);
        }
        .btn-signup:hover {
            background: var(--accent-secondary);
            color: #08090F;
            box-shadow: 0 6px 25px rgba(0, 240, 255, 0.5);
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.8rem;
        }
        .hero-section {
            padding: 80px 0 60px;
            background: linear-gradient(135deg, #08090F 0%, #0D111E 50%, #08090F 100%);
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 30% 40%, rgba(0, 82, 255, 0.15) 0%, transparent 50%),
                        radial-gradient(circle at 70% 60%, rgba(0, 240, 255, 0.08) 0%, transparent 50%);
            animation: heroGlow 12s ease-in-out infinite;
        }
        @keyframes heroGlow {
            0%, 100% { transform: translate(0, 0); }
            50% { transform: translate(-2%, -2%); }
        }
        .hero-content {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .hero-text h1 {
            font-size: 3rem;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 24px;
            background: linear-gradient(135deg, #FFFFFF, #CBD5E1);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-text .highlight {
            background: linear-gradient(135deg, #0052FF, #00F0FF);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-text p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            margin-bottom: 32px;
            max-width: 540px;
            line-height: 1.7;
        }
        .hero-cta {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }
        .hero-stats {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
        }
        .stat-item {
            text-align: left;
        }
        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-secondary);
            display: block;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }
        .hero-image-wrapper {
            position: relative;
            width: 100%;
            max-width: 500px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 2px solid var(--border-color);
            box-shadow: var(--shadow-glow);
        }
        .hero-image-wrapper img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .hero-image-wrapper::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 40%;
            background: linear-gradient(to top, rgba(8, 9, 15, 0.9), transparent);
        }
        .section {
            padding: 70px 0;
        }
        .section-header {
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .section-header p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 700px;
            line-height: 1.7;
        }
        .comparison-table {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
        }
        .comparison-table table {
            width: 100%;
            border-collapse: collapse;
            min-width: 700px;
        }
        .comparison-table th {
            background: rgba(0, 82, 255, 0.15);
            color: var(--accent-secondary);
            font-weight: 700;
            padding: 16px 20px;
            text-align: left;
            font-size: 0.95rem;
            border-bottom: 2px solid var(--border-color);
        }
        .comparison-table td {
            padding: 16px 20px;
            color: var(--text-secondary);
            border-bottom: 1px solid rgba(0, 82, 255, 0.15);
            font-size: 0.95rem;
        }
        .comparison-table tr:last-child td {
            border-bottom: none;
        }
        .comparison-table tr:hover td {
            background: rgba(0, 82, 255, 0.05);
        }
        .badge-trusted {
            display: inline-block;
            background: rgba(0, 240, 255, 0.15);
            color: var(--accent-secondary);
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
        }
        .badge-hot {
            display: inline-block;
            background: rgba(255, 0, 100, 0.2);
            color: #FF007F;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
        }
        .recommend-card {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.2), rgba(0, 240, 255, 0.1));
            border: 2px solid var(--accent-secondary);
            border-radius: var(--radius-lg);
            padding: 40px;
            position: relative;
            overflow: hidden;
        }
        .recommend-card::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.2), transparent);
            border-radius: 50%;
        }
        .recommend-card h3 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }
        .recommend-card p {
            color: var(--text-secondary);
            margin-bottom: 24px;
            font-size: 1.1rem;
            position: relative;
            z-index: 1;
            line-height: 1.7;
        }
        .recommend-card .features-list {
            list-style: none;
            margin-bottom: 32px;
            position: relative;
            z-index: 1;
        }
        .recommend-card .features-list li {
            padding: 8px 0;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1rem;
        }
        .recommend-card .features-list li i {
            color: var(--accent-secondary);
        }
        .info-list-section {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 40px;
            align-items: start;
        }
        .info-list {
            list-style: none;
        }
        .info-list li {
            padding: 20px 0;
            border-bottom: 1px solid rgba(0, 82, 255, 0.2);
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }
        .info-list li:last-child {
            border-bottom: none;
        }
        .info-list .info-icon {
            width: 48px;
            height: 48px;
            background: rgba(0, 82, 255, 0.15);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-secondary);
            font-size: 1.3rem;
            flex-shrink: 0;
        }
        .info-list h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .info-list p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .info-sidebar {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px;
        }
        .info-sidebar h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--accent-secondary);
        }
        .info-sidebar p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .vertical-cards {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .vertical-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .vertical-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .vertical-card .card-image {
            width: 100%;
            height: 200px;
            overflow: hidden;
        }
        .vertical-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .vertical-card:hover .card-image img {
            transform: scale(1.05);
        }
        .vertical-card .card-body {
            padding: 20px;
        }
        .vertical-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .vertical-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .card-link {
            color: var(--accent-secondary);
            font-weight: 700;
            font-size: 0.95rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .card-link:hover {
            gap: 12px;
            color: #fff;
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 24px;
        }
        .step-item {
            padding: 28px;
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            transition: var(--transition);
        }
        .step-item:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-glow);
        }
        .step-number {
            font-size: 2.5rem;
            font-weight: 900;
            background: linear-gradient(135deg, #0052FF, #00F0FF);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            display: block;
            margin-bottom: 12px;
        }
        .step-item h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .step-item p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .tier-cards {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .tier-card {
            padding: 32px;
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            position: relative;
            transition: var(--transition);
        }
        .tier-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .tier-card.featured {
            border: 2px solid var(--accent-secondary);
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.15), rgba(0, 240, 255, 0.1));
        }
        .tier-label {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(0, 240, 255, 0.2);
            color: var(--accent-secondary);
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .tier-card h3 {
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 8px;
        }
        .tier-price {
            font-size: 2.5rem;
            font-weight: 900;
            color: var(--accent-secondary);
            margin-bottom: 16px;
        }
        .tier-card p {
            color: var(--text-secondary);
            margin-bottom: 20px;
            line-height: 1.7;
            font-size: 0.95rem;
        }
        .tier-benefits {
            list-style: none;
            margin-bottom: 24px;
        }
        .tier-benefits li {
            padding: 6px 0;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.95rem;
        }
        .tier-benefits li i {
            color: var(--accent-secondary);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-hover);
        }
        .faq-question {
            padding: 20px 24px;
            font-weight: 700;
            font-size: 1.05rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-primary);
            user-select: none;
        }
        .faq-question i {
            color: var(--accent-secondary);
            transition: var(--transition);
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .faq-item.open .faq-answer {
            max-height: 500px;
        }
        .faq-answer p {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            line-height: 1.7;
            font-size: 0.95rem;
        }
        .cta-section {
            background: linear-gradient(135deg, #0D111E 0%, #08090F 100%);
            padding: 70px 0;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: var(--text-secondary);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        footer {
            background: #08090F;
            border-top: 1px solid rgba(0, 82, 255, 0.2);
            padding: 40px 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-size: 1.2rem;
            font-weight: 800;
            background: linear-gradient(135deg, #0052FF, #00F0FF);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 16px;
            display: block;
        }
        .footer-links h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--accent-secondary);
        }
        .footer-links a {
            display: block;
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 10px;
        }
        .footer-links a:hover {
            color: var(--accent-secondary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(0, 82, 255, 0.2);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-bottom p {
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .trust-badges {
            display: flex;
            gap: 16px;
            align-items: center;
            flex-wrap: wrap;
        }
        .trust-badges span {
            background: rgba(0, 82, 255, 0.1);
            color: var(--accent-secondary);
            padding: 8px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
            border: 1px solid var(--border-color);
        }
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.7);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 2px solid var(--accent-secondary);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-secondary);
            font-size: 1.5rem;
            opacity: 0.6;
            transition: var(--transition);
            cursor: pointer;
        }
        .fab:hover {
            opacity: 1;
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.8);
            transform: scale(1.1);
        }
        .fab:active {
            transform: scale(0.95);
            border-color: #FF007F;
            color: #FF007F;
        }
        .fab .notification-dot {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 16px;
            height: 16px;
            background: #FF007F;
            border-radius: 50%;
            border: 2px solid #08090F;
            animation: blink 1.5s ease-in-out infinite;
        }
        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        @media (max-width: 1024px) {
            .hero-content {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-text h1 {
                font-size: 2.5rem;
            }
            .info-list-section {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.98);
                flex-direction: column;
                padding: 20px;
                gap: 16px;
                border-bottom: 1px solid var(--border-color);
            }
            .nav-links.open {
                display: flex;
            }
            .mobile-menu-btn {
                display: block;
            }
            .hero-text h1 {
                font-size: 2rem;
            }
            .hero-text p {
                font-size: 1rem;
            }
            .section-header h2 {
                font-size: 1.8rem;
            }
            .comparison-table {
                font-size: 0.85rem;
            }
            .vertical-cards {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .tier-cards {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .nav-container {
                height: 64px;
            }
            .logo {
                font-size: 1.1rem;
            }
            .hero-section {
                padding: 50px 0 40px;
            }
            .hero-text h1 {
                font-size: 1.7rem;
            }
            .hero-cta {
                flex-direction: column;
                width: 100%;
            }
            .hero-cta .btn-primary,
            .hero-cta .btn-outline {
                width: 100%;
                text-align: center;
            }
            .section {
                padding: 50px 0;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .recommend-card {
                padding: 24px;
            }
            .recommend-card h3 {
                font-size: 1.4rem;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.85);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --border-glow: rgba(0, 240, 255, 0.3);
            --border-electric: rgba(0, 82, 255, 0.5);
            --shadow-glow: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-blue: 0 8px 32px rgba(0, 82, 255, 0.25);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 32px;
            --spacing-lg: 64px;
            --spacing-xl: 96px;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            background: var(--bg-primary);
            color: var(--text-primary);
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }
        
        /* Header & Navigation */
        header {
            background: rgba(8, 9, 15, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.1);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            text-decoration: none;
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        
        .logo i {
            color: var(--accent-cyan);
            font-size: 1.5rem;
            filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.6));
        }
        
        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        
        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
        }
        
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-cyan);
            transition: width 0.3s ease;
            box-shadow: 0 0 10px var(--accent-cyan);
        }
        
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-cyan);
        }
        
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .btn-login {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--text-primary);
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            white-space: nowrap;
        }
        
        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.2);
        }
        
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: #fff;
            padding: 10px 24px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            white-space: nowrap;
            box-shadow: 0 4px 20px rgba(0, 82, 255, 0.4);
        }
        
        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 240, 255, 0.5);
        }
        
        .mobile-toggle {
            display: none;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--text-primary);
            width: 40px;
            height: 40px;
            border-radius: 8px;
            cursor: pointer;
            font-size: 1.2rem;
            align-items: center;
            justify-content: center;
        }
        
        /* Article Content */
        .article-hero {
            padding: var(--spacing-lg) 0 var(--spacing-md);
            background: linear-gradient(180deg, rgba(0, 82, 255, 0.08) 0%, transparent 100%);
            border-bottom: 1px solid rgba(0, 240, 255, 0.08);
        }
        
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: var(--spacing-sm);
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        
        .breadcrumb a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        
        .breadcrumb a:hover {
            color: var(--accent-blue);
        }
        
        .breadcrumb i {
            font-size: 0.7rem;
            color: var(--text-muted);
        }
        
        .article-category {
            display: inline-block;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--accent-cyan);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: var(--spacing-sm);
        }
        
        .article-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin-bottom: var(--spacing-sm);
            background: linear-gradient(135deg, #FFFFFF 0%, #CBD5E1 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .article-meta {
            display: flex;
            align-items: center;
            gap: 24px;
            flex-wrap: wrap;
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .article-meta i {
            color: var(--accent-cyan);
        }
        
        .article-body-wrapper {
            padding: var(--spacing-md) 0 var(--spacing-lg);
        }
        
        .article-body {
            max-width: 800px;
            margin: 0 auto;
        }
        
        .article-body h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin: var(--spacing-md) 0 var(--spacing-sm);
            color: var(--text-primary);
            letter-spacing: -0.01em;
        }
        
        .article-body h3 {
            font-size: 1.4rem;
            font-weight: 600;
            margin: var(--spacing-md) 0 var(--spacing-sm);
            color: var(--text-primary);
        }
        
        .article-body p {
            margin-bottom: var(--spacing-sm);
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.7;
        }
        
        .article-body ul,
        .article-body ol {
            margin: var(--spacing-sm) 0;
            padding-left: 24px;
            color: var(--text-secondary);
        }
        
        .article-body li {
            margin-bottom: 8px;
            font-size: 1.05rem;
            line-height: 1.7;
        }
        
        .article-body img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-md);
            margin: var(--spacing-sm) 0;
            border: 1px solid rgba(0, 240, 255, 0.15);
        }
        
        .article-body blockquote {
            border-left: 4px solid var(--accent-cyan);
            padding: var(--spacing-sm) var(--spacing-md);
            margin: var(--spacing-sm) 0;
            background: rgba(0, 240, 255, 0.05);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        
        .article-not-found {
            text-align: center;
            padding: var(--spacing-lg) 0;
        }
        
        .article-not-found i {
            font-size: 4rem;
            color: var(--text-muted);
            margin-bottom: var(--spacing-sm);
            opacity: 0.5;
        }
        
        .article-not-found h2 {
            font-size: 1.8rem;
            margin-bottom: var(--spacing-sm);
        }
        
        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: var(--spacing-md);
        }
        
        .btn-return {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            padding: 12px 32px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 700;
            transition: all 0.3s ease;
            box-shadow: 0 4px 20px rgba(0, 82, 255, 0.4);
        }
        
        .btn-return:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 240, 255, 0.5);
        }
        
        /* Article CTA Section */
        .article-cta {
            padding: var(--spacing-md) 0;
            background: rgba(0, 82, 255, 0.05);
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            border-bottom: 1px solid rgba(0, 240, 255, 0.1);
        }
        
        .article-cta-box {
            background: var(--bg-card);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            text-align: center;
            box-shadow: var(--shadow-blue);
        }
        
        .article-cta-box h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
        }
        
        .article-cta-box p {
            color: var(--text-secondary);
            margin-bottom: var(--spacing-sm);
        }
        
        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        
        .btn-primary {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            padding: 14px 36px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 700;
            font-size: 1rem;
            transition: all 0.3s ease;
            box-shadow: 0 4px 20px rgba(0, 82, 255, 0.4);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0, 240, 255, 0.6);
        }
        
        .btn-secondary {
            background: transparent;
            border: 1px solid rgba(0, 240, 255, 0.4);
            color: var(--accent-cyan);
            padding: 14px 36px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 700;
            font-size: 1rem;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        
        .btn-secondary:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
        }
        
        /* Footer */
        footer {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            padding: var(--spacing-lg) 0 var(--spacing-sm);
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-md);
            margin-bottom: var(--spacing-md);
        }
        
        .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
            display: block;
            margin-bottom: var(--spacing-sm);
        }
        
        .footer-links h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: var(--spacing-sm);
        }
        
        .footer-links a {
            display: block;
            color: var(--text-muted);
            text-decoration: none;
            font-size: 0.9rem;
            margin-bottom: 8px;
            transition: color 0.3s ease;
        }
        
        .footer-links a:hover {
            color: var(--accent-cyan);
        }
        
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: var(--spacing-sm);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        
        .footer-bottom p {
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        
        .trust-badges {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        
        .trust-badges span {
            display: flex;
            align-items: center;
            gap: 6px;
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        
        .trust-badges i {
            color: var(--accent-cyan);
        }
        
        /* FAB */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            text-decoration: none;
            transition: all 0.3s ease;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            position: relative;
        }
        
        .fab::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            z-index: -1;
            animation: fabBorderRotate 3s linear infinite;
        }
        
        @keyframes fabBorderRotate {
            0% { filter: hue-rotate(0deg); }
            100% { filter: hue-rotate(360deg); }
        }
        
        .fab i {
            color: var(--accent-cyan);
            font-size: 1.5rem;
            filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.8));
            animation: fabPulse 2s ease-in-out infinite;
        }
        
        @keyframes fabPulse {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.1); }
        }
        
        .fab:hover {
            transform: scale(1.1);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.8);
            opacity: 1;
        }
        
        .fab:active {
            transform: scale(0.95);
        }
        
        .fab .notification-dot {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 12px;
            height: 12px;
            background: #FF007F;
            border-radius: 50%;
            border: 2px solid var(--bg-primary);
            animation: blinkDot 1.5s ease-in-out infinite;
        }
        
        @keyframes blinkDot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        
        /* Responsive */
        @media (max-width: 1024px) {
            .article-hero h1 {
                font-size: 2.2rem;
            }
            
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.98);
                flex-direction: column;
                padding: var(--spacing-md);
                gap: 20px;
                transform: translateY(-110%);
                transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
                border-bottom: 1px solid rgba(0, 240, 255, 0.1);
                z-index: 99;
            }
            
            .nav-links.open {
                transform: translateY(0);
            }
            
            .mobile-toggle {
                display: flex;
            }
            
            .article-hero h1 {
                font-size: 1.8rem;
            }
            
            .article-body h2 {
                font-size: 1.5rem;
            }
            
            .article-body h3 {
                font-size: 1.2rem;
            }
            
            .article-meta {
                gap: 16px;
                font-size: 0.85rem;
            }
            
            .cta-buttons {
                flex-direction: column;
            }
            
            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
            }
        }
        
        @media (max-width: 520px) {
            .container {
                padding: 0 var(--spacing-sm);
            }
            
            .nav-container {
                height: 64px;
            }
            
            .logo {
                font-size: 0.95rem;
            }
            
            .btn-login,
            .btn-signup {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            
            .article-hero h1 {
                font-size: 1.5rem;
            }
            
            .article-hero {
                padding: var(--spacing-md) 0;
            }
            
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-sm);
            }
            
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            
            .trust-badges {
                justify-content: center;
            }
            
            .fab {
                width: 48px;
                height: 48px;
                left: 12px;
                bottom: 80px;
            }
            
            .fab i {
                font-size: 1.2rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #94A3B8;
            --border-subtle: rgba(0, 240, 255, 0.15);
            --border-glow: rgba(0, 240, 255, 0.5);
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.2);
            --shadow-glow-strong: 0 0 35px rgba(0, 240, 255, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.5rem;
            --spacing-lg: 2.5rem;
            --spacing-xl: 4rem;
            --spacing-2xl: 6rem;
        }

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

        body {
            font-family: 'Inter', system-ui, -apple-system, sans-serif;
            background-color: var(--primary-bg);
            color: var(--text-white);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.3s ease;
        }

        button, input, select, textarea {
            font-family: inherit;
        }

        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            transition: all 0.3s ease;
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.95);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--text-white);
            box-shadow: var(--shadow-glow);
        }

        .logo-text {
            font-weight: 700;
            font-size: 1.1rem;
            line-height: 1.2;
            color: var(--text-white);
            letter-spacing: -0.01em;
        }

        .logo-text span {
            color: var(--accent-cyan);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.35rem;
        }

        .nav-links a {
            padding: 0.5rem 1rem;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-silver);
            transition: all 0.3s ease;
            position: relative;
            white-space: nowrap;
        }

        .nav-links a:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-links a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.1);
            font-weight: 600;
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
            box-shadow: var(--shadow-glow);
        }

        .nav-auth {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
        }

        .btn-login {
            padding: 0.5rem 1.1rem;
            border: none;
            background: transparent;
            color: var(--text-silver);
            font-size: 0.88rem;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s ease;
            border-radius: 50px;
            white-space: nowrap;
        }

        .btn-login:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.06);
        }

        .btn-signup {
            padding: 0.55rem 1.3rem;
            border: none;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: var(--text-white);
            font-size: 0.88rem;
            font-weight: 600;
            cursor: pointer;
            border-radius: 50px;
            transition: all 0.3s ease;
            white-space: nowrap;
            box-shadow: var(--shadow-glow);
        }

        .btn-signup:hover {
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-1px);
        }

        .btn-signup:active {
            transform: translateY(0);
            box-shadow: var(--shadow-glow);
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.4rem;
        }

        /* FAB */
        .fab-support {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 999;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.7);
            backdrop-filter: blur(12px);
            border: 2px solid var(--border-glow);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            transition: all 0.3s ease;
            opacity: 0.7;
            animation: fabFloat 3s ease-in-out infinite;
        }

        .fab-support i {
            color: var(--accent-cyan);
            font-size: 1.4rem;
        }

        .fab-support:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.7);
            animation-play-state: paused;
        }

        .fab-support:active {
            transform: scale(0.95);
        }

        .fab-notification {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: #FF007F;
            border-radius: 50%;
            border: 2px solid var(--primary-bg);
            animation: blinkNotif 1.5s ease-in-out infinite;
        }

        @keyframes fabFloat {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
        }

        @keyframes blinkNotif {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        /* Page Hero */
        .page-hero {
            padding: 140px 0 60px;
            background: linear-gradient(180deg, rgba(0, 82, 255, 0.12) 0%, transparent 100%);
            position: relative;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

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

        .hero-content h1 {
            font-size: 2.8rem;
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 1.2rem;
            background: linear-gradient(135deg, #FFFFFF 0%, #CBD5E1 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-content h1 .highlight {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 1.1rem;
            color: var(--text-silver);
            line-height: 1.7;
            margin-bottom: 2rem;
            max-width: 540px;
        }

        .hero-badges {
            display: flex;
            gap: 0.8rem;
            flex-wrap: wrap;
            margin-bottom: 2rem;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.5rem 1rem;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid var(--border-subtle);
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--accent-cyan);
            font-weight: 500;
        }

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

        .btn-primary {
            padding: 0.85rem 2rem;
            border: none;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: var(--text-white);
            font-size: 1rem;
            font-weight: 600;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-glow);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .btn-primary:hover {
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-outline {
            padding: 0.85rem 2rem;
            border: 1px solid var(--border-subtle);
            background: transparent;
            color: var(--text-white);
            font-size: 1rem;
            font-weight: 500;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.05);
            border-color: var(--border-glow);
        }

        .hero-visual {
            position: relative;
        }

        .hero-visual-card {
            background: rgba(13, 17, 30, 0.8);
            backdrop-filter: blur(20px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 2rem;
            box-shadow: var(--shadow-glow);
        }

        .hero-visual-card h3 {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            color: var(--text-white);
        }

        .step-list {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
        }

        .step-item {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
        }

        .step-number {
            width: 36px;
            height: 36px;
            min-width: 36px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--text-white);
        }

        .step-content h4 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 0.2rem;
            color: var(--text-white);
        }

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

        /* Section styles */
        .section {
            padding: var(--spacing-xl) 0;
        }

        .section-header {
            margin-bottom: 2.5rem;
            max-width: 600px;
        }

        .section-label {
            display: inline-block;
            padding: 0.35rem 1rem;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid var(--border-subtle);
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 1rem;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.3;
            margin-bottom: 0.8rem;
            color: var(--text-white);
        }

        .section-header p {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* Metrics */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .metric-card {
            background: rgba(13, 17, 30, 0.6);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 1.8rem;
            text-align: left;
            transition: all 0.3s ease;
        }

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

        .metric-value {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--accent-cyan);
            margin-bottom: 0.4rem;
            letter-spacing: -0.02em;
        }

        .metric-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* App comparison table */
        .comparison-section {
            background: var(--secondary-bg);
            border-radius: var(--radius-xl);
            padding: 2.5rem;
            border: 1px solid var(--border-subtle);
            position: relative;
            overflow: hidden;
        }

        .comparison-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan), var(--accent-blue));
        }

        .comparison-table-wrap {
            overflow-x: auto;
            margin-top: 1.5rem;
        }

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

        .comparison-table th {
            padding: 1rem 1.2rem;
            text-align: left;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-silver);
            border-bottom: 1px solid var(--border-subtle);
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        .comparison-table td {
            padding: 1rem 1.2rem;
            font-size: 0.95rem;
            color: var(--text-white);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .comparison-table tr:last-child td {
            border-bottom: none;
        }

        .comparison-table tr:hover td {
            background: rgba(0, 240, 255, 0.03);
        }

        .platform-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.3rem 0.8rem;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
        }

        .platform-android {
            background: rgba(0, 200, 80, 0.1);
            color: #00C850;
            border: 1px solid rgba(0, 200, 80, 0.3);
        }

        .platform-ios {
            background: rgba(0, 150, 255, 0.1);
            color: #0096FF;
            border: 1px solid rgba(0, 150, 255, 0.3);
        }

        .platform-both {
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent-cyan);
            border: 1px solid var(--border-subtle);
        }

        /* Feature list */
        .feature-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .feature-item {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            padding: 1.2rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .feature-icon {
            width: 44px;
            height: 44px;
            min-width: 44px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.2rem;
        }

        .feature-text h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 0.3rem;
            color: var(--text-white);
        }

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

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            max-width: 800px;
        }

        .faq-item {
            background: rgba(13, 17, 30, 0.6);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s ease;
        }

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

        .faq-question {
            width: 100%;
            padding: 1.2rem 1.5rem;
            background: none;
            border: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            color: var(--text-white);
            font-size: 1rem;
            font-weight: 600;
            text-align: left;
            transition: all 0.3s ease;
            gap: 1rem;
        }

        .faq-question i {
            color: var(--accent-cyan);
            font-size: 1.1rem;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 1.5rem;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 1.5rem 1.5rem;
        }

        .faq-answer p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.2), rgba(0, 240, 255, 0.12));
            border-radius: var(--radius-xl);
            padding: 3rem;
            text-align: center;
            border: 1px solid var(--border-subtle);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -100px;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 200px;
            background: radial-gradient(ellipse, rgba(0, 240, 255, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--text-white);
            position: relative;
        }

        .cta-section p {
            font-size: 1.05rem;
            color: var(--text-silver);
            margin-bottom: 2rem;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
            position: relative;
        }

        .cta-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
        }

        /* Footer */
        .site-footer {
            background: var(--secondary-bg);
            border-top: 1px solid var(--border-subtle);
            padding: 3rem 0 1.5rem;
            margin-top: var(--spacing-xl);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }

        .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-white);
            display: block;
            margin-bottom: 1rem;
        }

        .footer-links h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 1rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .footer-links a {
            display: block;
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0.6rem;
            transition: color 0.3s ease;
        }

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            flex-wrap: wrap;
            gap: 1rem;
        }

        .footer-bottom p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .trust-badges {
            display: flex;
            gap: 1.2rem;
            flex-wrap: wrap;
        }

        .trust-badges span {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.8rem;
            color: var(--text-silver);
        }

        .trust-badges i {
            color: var(--accent-cyan);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .hero-content h1 {
                font-size: 2.2rem;
            }

            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .feature-list {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 1rem;
                border-bottom: 1px solid var(--border-subtle);
                gap: 0.2rem;
            }

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

            .nav-links a {
                width: 100%;
                padding: 0.8rem 1rem;
                border-radius: var(--radius-sm);
            }

            .mobile-menu-btn {
                display: block;
            }

            .nav-auth .btn-login {
                display: none;
            }

            .nav-auth .btn-signup {
                padding: 0.5rem 1rem;
                font-size: 0.82rem;
            }

            .hero-content h1 {
                font-size: 1.8rem;
            }

            .hero-desc {
                font-size: 1rem;
            }

            .metrics-grid {
                grid-template-columns: 1fr;
            }

            .comparison-section {
                padding: 1.5rem;
            }

            .cta-section {
                padding: 2rem 1.5rem;
            }

            .cta-section h2 {
                font-size: 1.6rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 1rem;
            }

            .fab-support {
                left: 0.8rem;
                bottom: 5rem;
                width: 46px;
                height: 46px;
            }
        }

        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 1.5rem;
            }

            .hero-cta-group {
                flex-direction: column;
                width: 100%;
            }

            .btn-primary, .btn-outline {
                width: 100%;
                justify-content: center;
            }

            .section {
                padding: 2.5rem 0;
            }

            .section-header h2 {
                font-size: 1.5rem;
            }

            .cta-buttons {
                flex-direction: column;
                width: 100%;
            }

            .cta-buttons .btn-primary, .cta-buttons .btn-outline {
                width: 100%;
                justify-content: center;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.85);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-gold: #FFD700;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #94A3B8;
            --border-glow: rgba(0, 240, 255, 0.4);
            --shadow-glow: 0 0 15px rgba(0, 240, 255, 0.3);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --space-1: 0.5rem;
            --space-2: 1rem;
            --space-3: 1.5rem;
            --space-4: 2rem;
            --space-5: 3rem;
            --space-6: 4rem;
            --font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background-color: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.6;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.2s ease;
        }

        a:hover {
            color: var(--accent-blue);
        }

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

        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding-left: var(--space-3);
            padding-right: var(--space-3);
        }

        /* HEADER / NAV */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo-brand {
            font-weight: 800;
            font-size: 1.4rem;
            letter-spacing: -0.01em;
            background: linear-gradient(135deg, #FFFFFF 0%, #00F0FF 80%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: var(--space-2);
        }

        .nav-links a {
            color: var(--text-silver);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.5rem 0.75rem;
            border-radius: var(--radius-sm);
            transition: all 0.2s ease;
            white-space: nowrap;
        }

        .nav-links a:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.05);
        }

        .nav-links a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
            box-shadow: inset 0 0 0 1px rgba(0, 240, 255, 0.2);
        }

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

        .btn-login {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-white);
            padding: 0.55rem 1.2rem;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all 0.2s ease;
            white-space: nowrap;
        }

        .btn-login:hover {
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.05);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: #fff;
            padding: 0.55rem 1.4rem;
            border-radius: 999px;
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.4);
            transition: all 0.2s ease;
            white-space: nowrap;
        }

        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.6);
        }

        .menu-toggle {
            display: none;
            background: transparent;
            border: none;
            color: var(--text-white);
            font-size: 1.8rem;
            cursor: pointer;
        }

        /* HERO */
        .hero {
            background: url('/assets/images/backpic/back-2.jpg') center center / cover no-repeat;
            position: relative;
            padding: var(--space-6) 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8,9,15,0.7) 0%, rgba(8,9,15,0.85) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: var(--space-5);
            align-items: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--accent-cyan);
            padding: 0.4rem 1rem;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: var(--space-2);
        }

        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: var(--space-2);
            background: linear-gradient(135deg, #FFFFFF 20%, #00F0FF 80%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-silver);
            max-width: 600px;
            margin-bottom: var(--space-3);
        }

        .hero-metrics {
            display: flex;
            gap: var(--space-3);
            flex-wrap: wrap;
        }

        .metric-chip {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 0.6rem 1.2rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            color: var(--text-white);
        }

        .hero-poster {
            background: rgba(13, 17, 30, 0.7);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-lg);
            padding: var(--space-3);
            box-shadow: var(--shadow-glow);
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .hero-poster img {
            border-radius: var(--radius-md);
            object-fit: cover;
            aspect-ratio: 16/10;
        }

        .poster-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-silver);
            font-size: 0.9rem;
        }

        .heat-badge {
            background: rgba(255, 215, 0, 0.15);
            border: 1px solid rgba(255, 215, 0, 0.4);
            color: var(--accent-gold);
            padding: 0.25rem 0.75rem;
            border-radius: 999px;
            font-weight: 700;
            font-size: 0.8rem;
        }

        /* MAIN SECTIONS */
        main {
            padding: var(--space-5) 0;
        }

        .section {
            margin-bottom: var(--space-6);
        }

        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: var(--space-3);
            flex-wrap: wrap;
            gap: 1rem;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--text-white);
        }

        .section-subtitle {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 500px;
        }

        /* DASHBOARD METRICS */
        .metrics-board {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-3);
        }

        .metric-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: var(--space-3);
            backdrop-filter: blur(6px);
            transition: transform 0.2s ease, border-color 0.2s ease;
        }

        .metric-card:hover {
            border-color: var(--accent-cyan);
            transform: translateY(-2px);
        }

        .metric-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1;
            margin-bottom: 0.25rem;
        }

        .metric-label {
            color: var(--text-muted);
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 0.03em;
        }

        /* SERVICE MATRIX */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-3);
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: var(--space-3);
            transition: all 0.25s ease;
        }

        .service-card:hover {
            border-color: rgba(0, 240, 255, 0.4);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.1);
            transform: translateY(-3px);
        }

        .service-icon {
            width: 48px;
            height: 48px;
            background: rgba(0, 240, 255, 0.1);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-cyan);
            margin-bottom: var(--space-2);
        }

        .service-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* COMPARISON TABLE / RESULT */
        .compare-table {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            overflow: hidden;
        }

        .compare-row {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            padding: 1rem 1.5rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            align-items: center;
        }

        .compare-row.header-row {
            background: rgba(0, 240, 255, 0.05);
            font-weight: 700;
            color: var(--accent-cyan);
            text-transform: uppercase;
            font-size: 0.85rem;
            letter-spacing: 0.05em;
        }

        .compare-row:last-child {
            border-bottom: none;
        }

        .compare-row .rank {
            font-weight: 700;
            color: var(--accent-gold);
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--space-2);
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            overflow: hidden;
        }

        .faq-question {
            width: 100%;
            padding: 1rem 1.5rem;
            background: transparent;
            border: none;
            color: var(--text-white);
            font-weight: 600;
            font-size: 1rem;
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background 0.2s;
        }

        .faq-question:hover {
            background: rgba(255, 255, 255, 0.03);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            color: var(--text-muted);
            padding: 0 1.5rem;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 1.5rem;
        }

        /* CTA */
        .cta-section {
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            border-radius: var(--radius-lg);
            padding: var(--space-5);
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(0, 240, 255, 0.2);
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8,9,15,0.85) 0%, rgba(13,17,30,0.9) 100%);
            z-index: 1;
        }

        .cta-content {
            position: relative;
            z-index: 2;
            text-align: left;
        }

        .cta-content h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }

        .cta-content p {
            color: var(--text-silver);
            max-width: 600px;
            margin-bottom: 1.5rem;
        }

        /* FOOTER */
        footer {
            background: #06070B;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: var(--space-5) 0 var(--space-2);
            margin-top: var(--space-5);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--space-4);
            margin-bottom: var(--space-4);
        }

        .footer-brand {
            font-weight: 700;
            font-size: 1.2rem;
            display: block;
            margin-bottom: 0.75rem;
            background: linear-gradient(135deg, #fff, #00F0FF);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .footer-links h4 {
            color: var(--accent-cyan);
            font-size: 0.95rem;
            margin-bottom: 0.75rem;
            font-weight: 600;
        }

        .footer-links a {
            display: block;
            color: var(--text-muted);
            margin-bottom: 0.5rem;
            font-size: 0.9rem;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: var(--space-2);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        .trust-badges {
            display: flex;
            gap: 1rem;
        }

        .trust-badges span {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            color: var(--text-silver);
            font-size: 0.85rem;
        }

        /* FAB */
        .fab-neon {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 999px;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(8px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), linear-gradient(135deg, #00F0FF, #0052FF);
            background-origin: border-box;
            background-clip: padding-box, border-box;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.5rem;
            cursor: pointer;
            opacity: 0.7;
            transition: all 0.3s ease;
            animation: floatBreath 3s infinite;
        }

        .fab-neon:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.8);
        }

        .fab-neon:active {
            transform: scale(0.95);
            border-color: #FF007F;
            box-shadow: 0 0 35px rgba(255, 0, 127, 0.8);
        }

        @keyframes floatBreath {
            0%, 100% { box-shadow: 0 0 15px rgba(0, 240, 255, 0.4); }
            50% { box-shadow: 0 0 25px rgba(0, 240, 255, 0.7); }
        }

        .fab-neon .notif-dot {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: #FF007F;
            border-radius: 50%;
            border: 2px solid #000;
            animation: blinkDot 1.2s infinite;
        }

        @keyframes blinkDot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        /* RESPONSIVE */
        @media (max-width: 1024px) {
            .hero-content {
                grid-template-columns: 1fr;
            }
            .metrics-board {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: #0D111E;
                flex-direction: column;
                padding: 1rem;
                border-bottom: 1px solid rgba(255,255,255,0.05);
            }
            .nav-links.open {
                display: flex;
            }
            .menu-toggle {
                display: block;
            }
            .nav-actions .btn-login,
            .nav-actions .btn-signup {
                padding: 0.4rem 0.8rem;
                font-size: 0.8rem;
            }
            .compare-row {
                grid-template-columns: 1fr 1fr;
                gap: 0.5rem;
            }
            .compare-row.header-row {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 520px) {
            .metrics-board,
            .service-grid {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .nav-actions {
                gap: 0.4rem;
            }
            .btn-login,
            .btn-signup {
                padding: 0.4rem 0.7rem;
                font-size: 0.75rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }