/* roulang page: index */
:root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --card-bg: rgba(13, 17, 30, 0.85);
            --glass-bg: rgba(8, 9, 15, 0.7);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-neon: #00F0FF;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --border-color: rgba(0, 82, 255, 0.3);
            --border-glow: rgba(0, 240, 255, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.3);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --font-primary: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --glass-blur: blur(16px);
            --max-width: 1280px;
            --nav-height: 72px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-primary);
            background: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 20% 50%, rgba(0, 82, 255, 0.08) 0%, transparent 50%),
                        radial-gradient(ellipse at 80% 20%, rgba(0, 240, 255, 0.05) 0%, transparent 50%),
                        radial-gradient(ellipse at 50% 80%, rgba(0, 82, 255, 0.06) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

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

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

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

        button, .btn {
            cursor: pointer;
            font-family: var(--font-primary);
            border: none;
            outline: none;
            transition: all var(--transition-smooth);
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: var(--glass-blur);
            -webkit-backdrop-filter: var(--glass-blur);
            border-bottom: 1px solid rgba(0, 82, 255, 0.25);
            height: var(--nav-height);
            transition: background var(--transition-smooth);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.95);
            border-bottom-color: rgba(0, 240, 255, 0.4);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
        }

        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            letter-spacing: -0.3px;
        }

        .logo i {
            color: var(--accent-cyan);
            font-size: 1.5rem;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }

        .nav-links a {
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-smooth);
            position: relative;
            white-space: nowrap;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--accent-cyan);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login {
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            transition: all var(--transition-smooth);
        }

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

        .btn-signup {
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 700;
            color: #08090F;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.35);
            transition: all var(--transition-smooth);
        }

        .btn-signup:hover {
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.6);
            transform: translateY(-2px);
            color: #08090F;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 6px;
        }

        /* Hero Section - Full Width Video Overlay */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            overflow: hidden;
            margin-top: 0;
            padding-top: var(--nav-height);
        }

        .hero-video-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
            opacity: 0.45;
            pointer-events: none;
        }

        .hero-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(180deg, rgba(8, 9, 15, 0.7) 0%, rgba(8, 9, 15, 0.9) 60%, var(--primary-bg) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
            padding: 40px 24px;
        }

        .hero-tag {
            display: inline-block;
            padding: 8px 20px;
            border-radius: 50px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--accent-cyan);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.8px;
            margin-bottom: 24px;
        }

        .hero-content h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 24px;
            background: linear-gradient(135deg, #FFFFFF 0%, var(--accent-cyan) 60%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
        }

        .hero-desc {
            font-size: 1.15rem;
            color: var(--text-secondary);
            margin-bottom: 36px;
            max-width: 650px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }

        .hero-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-hero-primary {
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 700;
            color: #08090F;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.5);
            transition: all var(--transition-smooth);
        }

        .btn-hero-primary:hover {
            box-shadow: 0 0 42px rgba(0, 240, 255, 0.8);
            transform: translateY(-3px);
            color: #08090F;
        }

        .btn-hero-outline {
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.4);
            transition: all var(--transition-smooth);
        }

        .btn-hero-outline:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.2);
        }

        .hero-play-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: rgba(0, 240, 255, 0.15);
            border: 2px solid var(--accent-cyan);
            color: var(--accent-cyan);
            font-size: 1.5rem;
            margin-bottom: 24px;
            cursor: pointer;
            transition: all var(--transition-smooth);
            animation: pulse-ring 2s infinite;
        }

        .hero-play-btn:hover {
            background: rgba(0, 240, 255, 0.3);
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.6);
        }

        @keyframes pulse-ring {
            0% { box-shadow: 0 0 0 0 rgba(0, 240, 255, 0.5); }
            70% { box-shadow: 0 0 0 24px rgba(0, 240, 255, 0); }
            100% { box-shadow: 0 0 0 0 rgba(0, 240, 255, 0); }
        }

        /* Section Common */
        section {
            padding: 80px 0;
            position: relative;
            z-index: 1;
        }

        .section-label {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 50px;
            background: rgba(0, 82, 255, 0.12);
            border: 1px solid rgba(0, 82, 255, 0.25);
            color: var(--accent-blue);
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
            letter-spacing: -0.3px;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: 40px;
        }

        /* Group Buy Section */
        .group-buy-section {
            background: rgba(13, 17, 30, 0.5);
        }

        .group-buy-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .glass-card {
            background: var(--glass-bg);
            backdrop-filter: var(--glass-blur);
            -webkit-backdrop-filter: var(--glass-blur);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all var(--transition-smooth);
            position: relative;
        }

        .glass-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }

        .glass-card .card-icon {
            width: 50px;
            height: 50px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.2), rgba(0, 240, 255, 0.15));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-cyan);
            margin-bottom: 16px;
        }

        .glass-card h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

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

        .glass-card .card-badge {
            position: absolute;
            top: 16px;
            right: 16px;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 700;
            background: rgba(255, 59, 48, 0.2);
            color: #FF3B30;
        }

        /* Hot Deals */
        .hot-deals-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .deal-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

        .deal-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }

        .deal-card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }

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

        .deal-card-img .deal-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 700;
            background: rgba(0, 240, 255, 0.85);
            color: #08090F;
        }

        .deal-card-body {
            padding: 20px;
        }

        .deal-card-body h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .deal-price {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--accent-cyan);
            margin-bottom: 4px;
        }

        .deal-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            gap: 16px;
        }

        .deal-btn {
            display: inline-block;
            margin-top: 12px;
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-primary);
            background: var(--accent-blue);
            transition: all var(--transition-smooth);
        }

        .deal-btn:hover {
            background: var(--accent-cyan);
            color: #08090F;
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.4);
        }

        /* News Section */
        .news-grid-layout {
            display: grid;
            grid-template-columns: 1fr 360px;
            gap: 32px;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .news-item {
            display: flex;
            gap: 16px;
            padding: 16px;
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            transition: all var(--transition-smooth);
        }

        .news-item:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.15);
        }

        .news-item-content {
            flex: 1;
        }

        .news-item-content a {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
            display: block;
            margin-bottom: 6px;
            transition: color var(--transition-fast);
        }

        .news-item-content a:hover {
            color: var(--accent-cyan);
        }

        .news-item-content .news-excerpt {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
            margin-bottom: 6px;
        }

        .news-item-content .news-meta {
            font-size: 0.75rem;
            color: var(--text-muted);
            display: flex;
            gap: 12px;
        }

        .news-sidebar {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 24px;
            height: fit-content;
            position: sticky;
            top: calc(var(--nav-height) + 20px);
        }

        .news-sidebar h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--accent-cyan);
        }

        .news-sidebar-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .news-sidebar-list li a {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.5;
            transition: color var(--transition-fast);
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }

        .news-sidebar-list li a::before {
            content: '▹';
            color: var(--accent-cyan);
            font-size: 0.8rem;
            margin-top: 2px;
            flex-shrink: 0;
        }

        .news-sidebar-list li a:hover {
            color: var(--accent-cyan);
        }

        /* Open Group CTA */
        .cta-section {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.15), rgba(0, 240, 255, 0.08));
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .cta-section p {
            font-size: 1rem;
            color: var(--text-secondary);
            margin-bottom: 28px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        /* Membership Section */
        .membership-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }

        .membership-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px;
            text-align: left;
            transition: all var(--transition-smooth);
            position: relative;
        }

        .membership-card.featured {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 24px rgba(0, 240, 255, 0.2);
        }

        .membership-card .tier-badge {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent-cyan);
            margin-bottom: 8px;
        }

        .membership-card h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .membership-card ul {
            list-style: none;
            margin-bottom: 20px;
        }

        .membership-card ul li {
            padding: 6px 0;
            font-size: 0.9rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .membership-card ul li i {
            color: var(--accent-cyan);
            font-size: 0.75rem;
        }

        .btn-membership {
            display: block;
            width: 100%;
            padding: 12px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 700;
            color: #08090F;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            text-align: center;
            transition: all var(--transition-smooth);
        }

        .btn-membership:hover {
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
            color: #08090F;
        }

        /* Countdown Section */
        .countdown-bar {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            background: var(--card-bg);
            border: 1px solid rgba(255, 59, 48, 0.4);
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            flex-wrap: wrap;
        }

        .countdown-timer {
            display: flex;
            gap: 16px;
        }

        .countdown-unit {
            text-align: center;
        }

        .countdown-unit .number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1;
        }

        .countdown-unit .label {
            font-size: 0.75rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .countdown-text {
            font-size: 1.1rem;
            font-weight: 600;
            color: #FF3B30;
        }

        /* Footer */
        .site-footer {
            background: rgba(13, 17, 30, 0.8);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 32px;
            position: relative;
            z-index: 1;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--accent-cyan);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .footer-badges {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 12px;
            justify-content: center;
        }

        .footer-badge {
            padding: 6px 14px;
            border-radius: 50px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.2);
            font-size: 0.75rem;
            color: var(--text-secondary);
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 999;
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(8, 9, 15, 0.65);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.5);
            transition: all var(--transition-smooth);
            font-size: 1.3rem;
            color: var(--accent-cyan);
            animation: fab-breathe 3s ease-in-out infinite;
        }

        .fab-left::before {
            content: '';
            position: absolute;
            inset: -3px;
            border-radius: 17px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            z-index: -1;
            mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask-composite: exclude;
            -webkit-mask-composite: xor;
            padding: 2px;
        }

        .fab-left:hover {
            transform: scale(1.12);
            box-shadow: 0 0 32px rgba(0, 240, 255, 0.8);
            color: #08090F;
            background: var(--accent-cyan);
        }

        @keyframes fab-breathe {
            0%, 100% { opacity: 0.7; }
            50% { opacity: 1; }
        }

        .fab-notification {
            position: absolute;
            top: -6px;
            right: -6px;
            width: 14px;
            height: 14px;
            background: #FF3B30;
            border-radius: 50%;
            border: 2px solid #08090F;
            animation: blink 1.2s infinite;
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .news-grid-layout {
                grid-template-columns: 1fr;
            }

            .news-sidebar {
                position: static;
            }

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

            section {
                padding: 56px 0;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                background: rgba(8, 9, 15, 0.97);
                backdrop-filter: var(--glass-blur);
                flex-direction: column;
                padding: 20px 24px;
                border-bottom: 1px solid var(--border-color);
                gap: 4px;
            }

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

            .nav-links a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 0.95rem;
            }

            .mobile-toggle {
                display: block;
            }

            .nav-actions .btn-login,
            .nav-actions .btn-signup {
                padding: 8px 16px;
                font-size: 0.8rem;
            }

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

            .hero-desc {
                font-size: 0.95rem;
            }

            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }

            .section-title {
                font-size: 1.6rem;
            }

            .countdown-bar {
                flex-direction: column;
                text-align: center;
            }

            .countdown-timer {
                gap: 10px;
            }

            .countdown-unit .number {
                font-size: 1.8rem;
            }

            .fab-left {
                left: 16px;
                bottom: 80px;
                width: 44px;
                height: 44px;
                font-size: 1.1rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .hero-content h1 {
                font-size: 1.5rem;
            }

            .group-buy-grid,
            .hot-deals-grid,
            .membership-grid {
                grid-template-columns: 1fr;
            }

            .news-item {
                flex-direction: column;
            }
        }

/* roulang page: category1 */
:root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --card-bg: rgba(13, 17, 30, 0.85);
            --glass-bg: rgba(8, 9, 15, 0.7);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-neon: #00F0FF;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --border-color: rgba(0, 82, 255, 0.3);
            --border-glow: rgba(0, 240, 255, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.3);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --font-primary: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --glass-blur: blur(16px);
            --max-width: 1280px;
            --nav-height: 72px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-primary);
            background: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            position: relative;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 20% 50%, rgba(0, 82, 255, 0.08) 0%, transparent 50%),
                        radial-gradient(ellipse at 80% 20%, rgba(0, 240, 255, 0.05) 0%, transparent 50%),
                        radial-gradient(ellipse at 50% 80%, rgba(0, 82, 255, 0.06) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

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

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

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

        button,
        .btn {
            cursor: pointer;
            font-family: var(--font-primary);
            border: none;
            outline: none;
            transition: all var(--transition-smooth);
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: var(--glass-blur);
            -webkit-backdrop-filter: var(--glass-blur);
            border-bottom: 1px solid rgba(0, 82, 255, 0.25);
            height: var(--nav-height);
            transition: background var(--transition-smooth);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.95);
            border-bottom-color: rgba(0, 240, 255, 0.4);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
        }

        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            letter-spacing: -0.3px;
        }

        .logo i {
            color: var(--accent-cyan);
            font-size: 1.5rem;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }

        .nav-links a {
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-smooth);
            position: relative;
            white-space: nowrap;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--accent-cyan);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login {
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            transition: all var(--transition-smooth);
        }

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

        .btn-signup {
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 700;
            color: #08090F;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.35);
            transition: all var(--transition-smooth);
        }

        .btn-signup:hover {
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.6);
            transform: translateY(-2px);
            color: #08090F;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
        }

        @media (max-width: 1024px) {
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                background: rgba(8, 9, 15, 0.98);
                backdrop-filter: var(--glass-blur);
                flex-direction: column;
                padding: 16px 0;
                gap: 4px;
                transform: translateY(-120%);
                transition: transform var(--transition-smooth);
                z-index: 999;
                border-bottom: 1px solid var(--border-color);
            }

            .nav-links.active {
                transform: translateY(0);
            }

            .nav-links a {
                width: 100%;
                text-align: center;
                padding: 14px 18px;
                font-size: 1rem;
            }

            .mobile-toggle {
                display: block;
            }
        }

        @media (max-width: 640px) {
            .logo span {
                font-size: 0.95rem;
            }

            .btn-login,
            .btn-signup {
                padding: 8px 14px;
                font-size: 0.8rem;
            }

            .nav-actions {
                gap: 8px;
            }
        }

        .page-hero {
            padding: calc(var(--nav-height) + 48px) 0 60px;
            position: relative;
            overflow: hidden;
            background: linear-gradient(180deg, rgba(0, 82, 255, 0.12) 0%, transparent 100%);
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }

        .page-hero-content {
            position: relative;
            z-index: 2;
            text-align: left;
            max-width: 800px;
        }

        .page-hero-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #FFFFFF, var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .page-hero-content .subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 32px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--accent-cyan);
        }

        .breadcrumb i {
            font-size: 0.7rem;
        }

        .section {
            padding: 72px 0;
            position: relative;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
            text-align: left;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 40px;
            max-width: 700px;
            text-align: left;
        }

        .glass-card {
            background: var(--card-bg);
            backdrop-filter: var(--glass-blur);
            -webkit-backdrop-filter: var(--glass-blur);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

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

        .guide-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .guide-card {
            background: var(--card-bg);
            backdrop-filter: var(--glass-blur);
            -webkit-backdrop-filter: var(--glass-blur);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }

        .guide-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
        }

        .guide-card-icon {
            width: 56px;
            height: 56px;
            flex-shrink: 0;
            background: rgba(0, 82, 255, 0.2);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 240, 255, 0.3);
        }

        .guide-card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .guide-card-body p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
        }

        .guide-card-body .steps {
            list-style: none;
            padding: 0;
        }

        .guide-card-body .steps li {
            font-size: 0.9rem;
            color: var(--text-muted);
            padding: 6px 0;
            padding-left: 24px;
            position: relative;
            line-height: 1.5;
        }

        .guide-card-body .steps li::before {
            content: '▸';
            position: absolute;
            left: 0;
            color: var(--accent-cyan);
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--card-bg);
            backdrop-filter: var(--glass-blur);
            -webkit-backdrop-filter: var(--glass-blur);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

        .faq-question {
            padding: 20px 24px;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background var(--transition-fast);
            user-select: none;
        }

        .faq-question:hover {
            background: rgba(0, 240, 255, 0.05);
        }

        .faq-question i {
            color: var(--accent-cyan);
            transition: transform var(--transition-smooth);
        }

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

        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        .process-timeline {
            display: flex;
            flex-direction: column;
            gap: 32px;
            position: relative;
        }

        .process-timeline::before {
            content: '';
            position: absolute;
            left: 40px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, var(--accent-cyan), var(--accent-blue));
            opacity: 0.5;
        }

        .process-step {
            display: flex;
            gap: 24px;
            align-items: flex-start;
            position: relative;
            z-index: 2;
        }

        .process-num {
            width: 56px;
            height: 56px;
            flex-shrink: 0;
            background: var(--card-bg);
            border: 2px solid var(--accent-cyan);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
        }

        .process-content h4 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .process-content p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        .cta-section {
            padding: 80px 0;
            text-align: left;
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.15), rgba(0, 240, 255, 0.08));
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .cta-content h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-content p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 600px;
        }

        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: var(--radius-md);
            font-size: 1rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            color: #08090F;
            box-shadow: 0 0 24px rgba(0, 240, 255, 0.4);
            transition: all var(--transition-smooth);
        }

        .btn-cta:hover {
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.7);
            transform: translateY(-3px);
            color: #08090F;
        }

        .site-footer {
            background: var(--secondary-bg);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
            position: relative;
            z-index: 1;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--accent-cyan);
        }

        .footer-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .footer-badge {
            padding: 6px 14px;
            background: rgba(0, 82, 255, 0.15);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            font-size: 0.8rem;
            color: var(--text-secondary);
            white-space: nowrap;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 20px;
            text-align: center;
        }

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

        .fab-left {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 50;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.65);
            backdrop-filter: var(--glass-blur);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-cyan);
            cursor: pointer;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.4);
            transition: all var(--transition-smooth);
            animation: fabPulse 3s infinite ease-in-out;
        }

        .fab-left:hover {
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.7);
            border-image: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue)) 1;
        }

        @keyframes fabPulse {
            0%, 100% { opacity: 0.7; }
            50% { opacity: 1; }
        }

        @media (max-width: 1024px) {
            .guide-grid {
                grid-template-columns: 1fr;
            }

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

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

        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

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

            .section {
                padding: 48px 0;
            }

            .guide-card {
                flex-direction: column;
                gap: 16px;
            }

            .process-timeline::before {
                left: 28px;
            }

            .process-num {
                width: 44px;
                height: 44px;
                font-size: 1.1rem;
            }
        }

/* roulang page: article */
:root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --card-bg: rgba(13, 17, 30, 0.85);
            --glass-bg: rgba(8, 9, 15, 0.7);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-neon: #00F0FF;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --border-color: rgba(0, 82, 255, 0.3);
            --border-glow: rgba(0, 240, 255, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.3);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --font-primary: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --glass-blur: blur(16px);
            --max-width: 1280px;
            --nav-height: 72px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-primary);
            background: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }
        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 20% 50%, rgba(0, 82, 255, 0.08) 0%, transparent 50%),
                        radial-gradient(ellipse at 80% 20%, rgba(0, 240, 255, 0.05) 0%, transparent 50%),
                        radial-gradient(ellipse at 50% 80%, rgba(0, 82, 255, 0.06) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent-cyan);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, .btn {
            cursor: pointer;
            font-family: var(--font-primary);
            border: none;
            outline: none;
            transition: all var(--transition-smooth);
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: var(--glass-blur);
            -webkit-backdrop-filter: var(--glass-blur);
            border-bottom: 1px solid rgba(0, 82, 255, 0.25);
            height: var(--nav-height);
            transition: background var(--transition-smooth);
        }
        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.95);
            border-bottom-color: rgba(0, 240, 255, 0.4);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
        }
        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            letter-spacing: -0.3px;
        }
        .logo i {
            color: var(--accent-cyan);
            font-size: 1.5rem;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-smooth);
            position: relative;
            white-space: nowrap;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--accent-cyan);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-login {
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            transition: all var(--transition-smooth);
        }
        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.05);
        }
        .btn-signup {
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 700;
            color: #08090F;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.35);
            transition: all var(--transition-smooth);
        }
        .btn-signup:hover {
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.6);
            transform: translateY(-2px);
            color: #08090F;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            padding: 8px;
        }
        .page-container {
            padding-top: calc(var(--nav-height) + 32px);
            min-height: 80vh;
            position: relative;
            z-index: 1;
        }
        .article-hero {
            background: var(--secondary-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 40px 48px;
            margin-bottom: 32px;
            backdrop-filter: var(--glass-blur);
            background: var(--glass-bg);
            position: relative;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -50px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 16px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .article-meta span {
            background: rgba(0, 240, 255, 0.08);
            padding: 6px 14px;
            border-radius: 20px;
            border: 1px solid rgba(0, 240, 255, 0.2);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta i {
            color: var(--accent-cyan);
            font-size: 0.8rem;
        }
        .article-hero h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
            color: var(--text-primary);
            position: relative;
        }
        .article-hero .excerpt {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 800px;
        }
        .article-body {
            background: var(--glass-bg);
            backdrop-filter: var(--glass-blur);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 40px 48px;
            margin-bottom: 48px;
        }
        .article-body .cms-content {
            font-size: 1.05rem;
            line-height: 1.8;
            color: var(--text-secondary);
        }
        .article-body h2 {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 32px 0 16px;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--border-color);
        }
        .article-body h3 {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--accent-cyan);
            margin: 24px 0 12px;
        }
        .article-body p {
            margin-bottom: 18px;
        }
        .article-body ul, .article-body ol {
            padding-left: 24px;
            margin-bottom: 18px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
        }
        .article-body blockquote {
            border-left: 4px solid var(--accent-cyan);
            padding: 16px 24px;
            margin: 24px 0;
            background: rgba(0, 240, 255, 0.05);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-secondary);
        }
        .not-found-state {
            text-align: left;
            padding: 60px 20px;
            background: var(--glass-bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
        }
        .not-found-state i {
            font-size: 3rem;
            color: var(--accent-cyan);
            margin-bottom: 20px;
            display: block;
        }
        .not-found-state h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .not-found-state p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .not-found-state .btn-back {
            display: inline-block;
            padding: 12px 28px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            color: #08090F;
            font-weight: 700;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-glow);
            transition: all var(--transition-smooth);
        }
        .not-found-state .btn-back:hover {
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.6);
            transform: translateY(-2px);
            color: #08090F;
        }
        .cta-section {
            background: var(--secondary-bg);
            border-radius: var(--radius-lg);
            padding: 48px;
            margin-bottom: 48px;
            border: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -30px;
            right: -30px;
            width: 180px;
            height: 180px;
            background: radial-gradient(circle, rgba(0, 82, 255, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            color: var(--text-secondary);
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
        }
        .btn-cta {
            display: inline-block;
            padding: 14px 36px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            color: #08090F;
            font-weight: 700;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-glow);
            font-size: 1.05rem;
            position: relative;
            z-index: 1;
            transition: all var(--transition-smooth);
        }
        .btn-cta:hover {
            box-shadow: 0 0 32px rgba(0, 240, 255, 0.7);
            transform: translateY(-3px);
            color: #08090F;
        }
        .site-footer {
            background: var(--secondary-bg);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 24px;
            position: relative;
            z-index: 1;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--accent-cyan);
        }
        .footer-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-badge {
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            padding: 6px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        .fab-left {
            position: fixed;
            left: 24px;
            bottom: 100px;
            z-index: 999;
            width: 54px;
            height: 54px;
            border-radius: 50%;
            background: rgba(13, 17, 30, 0.85);
            backdrop-filter: var(--glass-blur);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.4rem;
            cursor: pointer;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            transition: all var(--transition-smooth);
            animation: fabPulse 2s infinite ease-in-out;
        }
        .fab-left::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50%;
            padding: 2px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
        }
        .fab-left:hover {
            box-shadow: 0 0 36px rgba(0, 240, 255, 0.7);
            transform: scale(1.1);
        }
        @keyframes fabPulse {
            0%, 100% { opacity: 0.8; }
            50% { opacity: 1; }
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .article-hero, .article-body {
                padding: 28px;
            }
            .article-hero h1 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                flex-direction: column;
                background: rgba(8, 9, 15, 0.98);
                backdrop-filter: var(--glass-blur);
                padding: 16px 0;
                border-bottom: 1px solid var(--border-color);
                z-index: 1001;
            }
            .nav-links.active {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 14px 24px;
                border-radius: 0;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-actions {
                gap: 8px;
            }
            .btn-login, .btn-signup {
                padding: 8px 16px;
                font-size: 0.8rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .article-hero, .article-body {
                padding: 20px;
            }
            .article-hero h1 {
                font-size: 1.5rem;
            }
            .cta-section {
                padding: 28px;
            }
            .fab-left {
                left: 12px;
                bottom: 80px;
                width: 44px;
                height: 44px;
                font-size: 1.2rem;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 12px;
            }
            .nav-actions .btn-login {
                padding: 6px 12px;
                font-size: 0.75rem;
            }
            .nav-actions .btn-signup {
                padding: 6px 14px;
                font-size: 0.75rem;
            }
            .article-hero h1 {
                font-size: 1.3rem;
            }
            .article-body {
                font-size: 0.95rem;
            }
        }

/* roulang page: category2 */
:root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --card-bg: rgba(13, 17, 30, 0.85);
            --glass-bg: rgba(8, 9, 15, 0.7);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-neon: #00F0FF;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --border-color: rgba(0, 82, 255, 0.3);
            --border-glow: rgba(0, 240, 255, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.3);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --font-primary: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --glass-blur: blur(16px);
            --max-width: 1280px;
            --nav-height: 72px;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-primary);
            background: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            position: relative;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: 
                radial-gradient(ellipse at 20% 50%, rgba(0, 82, 255, 0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 20%, rgba(0, 240, 255, 0.05) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 80%, rgba(0, 82, 255, 0.06) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

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

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

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

        button, .btn {
            cursor: pointer;
            font-family: var(--font-primary);
            border: none;
            outline: none;
            transition: all var(--transition-smooth);
        }

        h1, h2, h3, h4, h5, h6 {
            line-height: 1.3;
            font-weight: 700;
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: var(--glass-blur);
            -webkit-backdrop-filter: var(--glass-blur);
            border-bottom: 1px solid rgba(0, 82, 255, 0.25);
            height: var(--nav-height);
            transition: background var(--transition-smooth);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.95);
            border-bottom-color: rgba(0, 240, 255, 0.4);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 20px;
        }

        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            letter-spacing: -0.3px;
            flex-shrink: 0;
        }

        .logo i {
            color: var(--accent-cyan);
            font-size: 1.5rem;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
        }

        .nav-links a {
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-smooth);
            position: relative;
            white-space: nowrap;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--accent-cyan);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .btn-login {
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            transition: all var(--transition-smooth);
        }

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

        .btn-signup {
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 700;
            color: #08090F;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.35);
            transition: all var(--transition-smooth);
        }

        .btn-signup:hover {
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.6);
            transform: translateY(-2px);
            color: #08090F;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            padding: 8px;
            cursor: pointer;
        }

        /* Hero Section */
        .hero-section {
            padding: calc(var(--nav-height) + 60px) 0 60px;
            position: relative;
            overflow: hidden;
            background: var(--secondary-bg);
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            opacity: 0.15;
            pointer-events: none;
        }

        .hero-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .hero-content {
            text-align: left;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--border-glow);
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-cyan);
            margin-bottom: 20px;
        }

        .hero-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--text-primary);
            line-height: 1.2;
        }

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

        .hero-description {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.7;
        }

        .hero-stats {
            display: flex;
            gap: 32px;
            margin-bottom: 32px;
        }

        .stat-item {
            text-align: left;
        }

        .stat-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-cyan);
            display: block;
        }

        .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .hero-cta-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-primary {
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-size: 1rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            color: #08090F;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            transition: all var(--transition-smooth);
        }

        .btn-primary:hover {
            box-shadow: 0 0 36px rgba(0, 240, 255, 0.65);
            transform: translateY(-3px);
            color: #08090F;
        }

        .btn-secondary {
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-size: 1rem;
            font-weight: 600;
            border: 1px solid rgba(255, 255, 255, 0.3);
            background: transparent;
            color: var(--text-primary);
        }

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

        .hero-image {
            position: relative;
        }

        .hero-image img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
        }

        .hero-image .float-badge {
            position: absolute;
            top: 20px;
            right: -20px;
            background: var(--glass-bg);
            backdrop-filter: var(--glass-blur);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-md);
            padding: 12px 18px;
            box-shadow: var(--shadow-glow);
        }

        .float-badge .badge-text {
            font-size: 0.85rem;
            color: var(--accent-cyan);
            font-weight: 700;
        }

        /* Section Common */
        .section {
            padding: 80px 0;
            position: relative;
        }

        .section-header {
            text-align: left;
            margin-bottom: 48px;
        }

        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 700px;
        }

        /* Guide Cards */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
            gap: 24px;
        }

        .guide-card {
            background: var(--card-bg);
            backdrop-filter: var(--glass-blur);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all var(--transition-smooth);
            position: relative;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

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

        .guide-card-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.15), rgba(0, 82, 255, 0.15));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-cyan);
            flex-shrink: 0;
        }

        .guide-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
        }

        .guide-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .guide-card .btn-outline {
            align-self: flex-start;
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            font-size: 0.85rem;
            font-weight: 600;
            border: 1px solid var(--border-color);
            background: transparent;
            color: var(--text-primary);
            margin-top: auto;
        }

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

        /* Process Steps */
        .bg-dark {
            background: var(--secondary-bg);
        }

        .steps-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .step-card {
            background: var(--card-bg);
            backdrop-filter: var(--glass-blur);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 24px;
            text-align: left;
            position: relative;
            transition: all var(--transition-smooth);
        }

        .step-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card);
        }

        .step-number {
            font-size: 3rem;
            font-weight: 900;
            color: rgba(0, 240, 255, 0.2);
            position: absolute;
            top: 16px;
            right: 20px;
            line-height: 1;
        }

        .step-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .step-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* FAQ */
        .faq-list {
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card-bg);
            backdrop-filter: var(--glass-blur);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

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

        .faq-question {
            padding: 20px 24px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-primary);
            transition: color var(--transition-fast);
        }

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

        .faq-icon {
            color: var(--accent-cyan);
            font-size: 1rem;
            transition: transform var(--transition-smooth);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 24px 20px;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

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

        /* CTA Section */
        .cta-section {
            padding: 80px 0;
            position: relative;
            overflow: hidden;
            background: var(--secondary-bg);
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .cta-content {
            text-align: left;
        }

        .cta-content h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-content p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 28px;
            line-height: 1.7;
        }

        .cta-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .cta-image img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
        }

        /* Footer */
        .site-footer {
            background: var(--primary-bg);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 32px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .footer-col p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            font-size: 0.9rem;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--accent-cyan);
        }

        .footer-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .footer-badge {
            padding: 6px 14px;
            border: 1px solid var(--border-color);
            border-radius: 20px;
            font-size: 0.8rem;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.03);
            white-space: nowrap;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* FAB */
        .fab-container {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 50;
        }

        .fab-button {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            border: 2px solid var(--accent-cyan);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: #08090F;
            cursor: pointer;
            transition: all var(--transition-smooth);
            opacity: 0.6;
            animation: float 3s ease-in-out infinite;
        }

        .fab-button:hover {
            opacity: 1;
            box-shadow: 0 0 36px rgba(0, 240, 255, 0.7);
            transform: scale(1.1);
        }

        .fab-button:active {
            transform: scale(0.95) translateY(2px);
        }

        .fab-notification {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 16px;
            height: 16px;
            background: #FF0055;
            border-radius: 50%;
            border: 2px solid #08090F;
            animation: blink 1.5s infinite;
        }

        @keyframes float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-content h1 {
                font-size: 2.2rem;
            }
            .hero-stats {
                gap: 24px;
            }
            .guide-grid {
                grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            }
            .cta-inner {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: fixed;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                background: rgba(8, 9, 15, 0.95);
                backdrop-filter: var(--glass-blur);
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
            }
            .nav-links.open {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-actions {
                gap: 8px;
            }
            .btn-login, .btn-signup {
                padding: 8px 16px;
                font-size: 0.8rem;
            }
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .steps-container {
                grid-template-columns: 1fr;
            }
            .section {
                padding: 60px 0;
            }
            .hero-stats {
                flex-wrap: wrap;
                gap: 16px;
            }
            .fab-container {
                left: 16px;
                bottom: 80px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-content h1 {
                font-size: 1.5rem;
            }
            .hero-cta-group {
                flex-direction: column;
            }
            .btn-primary, .btn-secondary {
                width: 100%;
                text-align: center;
            }
            .cta-actions {
                flex-direction: column;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .nav-actions {
                gap: 6px;
            }
            .btn-login, .btn-signup {
                padding: 6px 12px;
                font-size: 0.75rem;
            }
        }

/* roulang page: category3 */
:root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --card-bg: rgba(13, 17, 30, 0.85);
            --glass-bg: rgba(8, 9, 15, 0.7);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-neon: #00F0FF;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --border-color: rgba(0, 82, 255, 0.3);
            --border-glow: rgba(0, 240, 255, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.3);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --font-primary: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --glass-blur: blur(16px);
            --max-width: 1280px;
            --nav-height: 72px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-primary);
            background: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            position: relative;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 20% 50%, rgba(0, 82, 255, 0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 20%, rgba(0, 240, 255, 0.05) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 80%, rgba(0, 82, 255, 0.06) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

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

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

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

        button,
        .btn {
            cursor: pointer;
            font-family: var(--font-primary);
            border: none;
            outline: none;
            transition: all var(--transition-smooth);
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: var(--glass-blur);
            -webkit-backdrop-filter: var(--glass-blur);
            border-bottom: 1px solid rgba(0, 82, 255, 0.25);
            height: var(--nav-height);
            transition: background var(--transition-smooth);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.95);
            border-bottom-color: rgba(0, 240, 255, 0.4);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 16px;
        }

        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            letter-spacing: -0.3px;
            flex-shrink: 0;
        }

        .logo i {
            color: var(--accent-cyan);
            font-size: 1.5rem;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            flex-wrap: wrap;
            justify-content: center;
        }

        .nav-links a {
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-smooth);
            position: relative;
            white-space: nowrap;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--accent-cyan);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .btn-login {
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            transition: all var(--transition-smooth);
        }

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

        .btn-signup {
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 700;
            color: #08090F;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.35);
            transition: all var(--transition-smooth);
            white-space: nowrap;
        }

        .btn-signup:hover {
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.6);
            transform: translateY(-2px);
            color: #08090F;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            padding: 8px;
            cursor: pointer;
        }

        /* Buttons & Globals */
        .btn-primary-glow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1rem;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            color: #08090F;
            box-shadow: 0 0 24px rgba(0, 240, 255, 0.4);
            transition: all var(--transition-smooth);
            border: none;
            cursor: pointer;
        }

        .btn-primary-glow:hover {
            box-shadow: 0 0 36px rgba(0, 240, 255, 0.7);
            transform: translateY(-3px);
            color: #08090F;
        }

        .btn-outline-cyan {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.95rem;
            background: transparent;
            border: 1px solid var(--border-glow);
            color: var(--accent-cyan);
            transition: all var(--transition-smooth);
            cursor: pointer;
        }

        .btn-outline-cyan:hover {
            background: rgba(0, 240, 255, 0.1);
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-glow);
            color: var(--accent-cyan);
        }

        .glass-card {
            background: var(--card-bg);
            backdrop-filter: var(--glass-blur);
            -webkit-backdrop-filter: var(--glass-blur);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
        }

        .glass-card:hover {
            border-color: var(--border-glow);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 240, 255, 0.15);
            transform: translateY(-4px);
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            margin-bottom: 2.5rem;
            line-height: 1.7;
            max-width: 700px;
        }

        .badge-tag {
            display: inline-block;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            background: rgba(0, 240, 255, 0.12);
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 240, 255, 0.3);
            letter-spacing: 0.3px;
        }

        .badge-hot {
            background: rgba(255, 50, 50, 0.15);
            color: #ff4d4d;
            border-color: rgba(255, 50, 50, 0.4);
        }

        .divider-glow {
            width: 60px;
            height: 3px;
            background: var(--accent-cyan);
            border-radius: 3px;
            box-shadow: 0 0 12px var(--accent-cyan);
            margin-bottom: 1.5rem;
        }

        /* Hero Section */
        .page-hero {
            padding: 140px 0 80px;
            text-align: left;
            position: relative;
        }

        .icon-matrix {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }

        .icon-matrix span {
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: var(--radius-sm);
            font-size: 1.3rem;
            color: var(--accent-cyan);
            transition: all 0.3s;
        }

        .icon-matrix span:hover {
            background: rgba(0, 240, 255, 0.18);
            box-shadow: 0 0 14px rgba(0, 240, 255, 0.4);
        }

        .status-bar {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 20px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .status-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #00ff88;
            box-shadow: 0 0 8px #00ff88;
            display: inline-block;
            margin-right: 6px;
        }

        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 1rem;
            max-width: 800px;
            color: var(--text-primary);
        }

        .page-hero .lead {
            font-size: 1.15rem;
            color: var(--text-secondary);
            margin-bottom: 2rem;
            max-width: 650px;
            line-height: 1.7;
        }

        /* Promo Cards Grid */
        .promo-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 28px;
            margin-top: 2rem;
        }

        .promo-card {
            background: var(--card-bg);
            backdrop-filter: var(--glass-blur);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }

        .promo-card:hover {
            border-color: var(--border-glow);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.5);
            transform: translateY(-4px);
        }

        .promo-img {
            height: 180px;
            object-fit: cover;
            width: 100%;
        }

        .promo-body {
            padding: 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .promo-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .promo-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            flex: 1;
            margin-bottom: 16px;
        }

        .promo-value {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent-cyan);
            margin-bottom: 12px;
        }

        /* Steps/Process */
        .steps-row {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            counter-reset: step;
        }

        .step-item {
            flex: 1 1 200px;
            background: var(--card-bg);
            backdrop-filter: var(--glass-blur);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            position: relative;
            transition: all 0.3s;
        }

        .step-item::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -16px;
            left: 20px;
            width: 36px;
            height: 36px;
            background: var(--accent-blue);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            box-shadow: 0 0 14px rgba(0, 82, 255, 0.6);
        }

        .step-item h4 {
            font-weight: 700;
            margin-top: 8px;
            font-size: 1.1rem;
            color: var(--text-primary);
        }

        /* Comparison Table */
        .compare-table-wrap {
            overflow-x: auto;
        }

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

        .compare-table th {
            background: rgba(0, 82, 255, 0.25);
            padding: 14px 18px;
            text-align: left;
            font-weight: 600;
            color: var(--text-primary);
            border-bottom: 2px solid var(--border-glow);
        }

        .compare-table td {
            padding: 14px 18px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--text-secondary);
        }

        .compare-table tr:hover td {
            background: rgba(0, 240, 255, 0.04);
        }

        /* FAQ */
        .faq-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            transition: all 0.3s;
        }

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

        .faq-question {
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .faq-question i {
            color: var(--accent-cyan);
        }

        .faq-answer {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        /* Footer */
        .site-footer {
            background: var(--secondary-bg);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
            margin-top: 80px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 36px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col li {
            margin-bottom: 10px;
        }

        .footer-col a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color 0.2s;
        }

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

        .footer-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .footer-badge {
            padding: 6px 14px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 20px;
            font-size: 0.8rem;
            color: var(--text-secondary);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        /* FAB */
        .fab-float {
            position: fixed;
            left: 20px;
            bottom: 80px;
            z-index: 999;
            width: 52px;
            height: 52px;
            background: rgba(8, 9, 15, 0.7);
            backdrop-filter: blur(12px);
            border-radius: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 2px solid transparent;
            background-clip: padding-box;
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.45);
            transition: all 0.3s;
            cursor: pointer;
            color: var(--accent-cyan);
            font-size: 1.4rem;
            animation: pulse-glow 2.2s infinite;
        }

        .fab-float:hover {
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.8);
            transform: scale(1.08);
        }

        @keyframes pulse-glow {
            0%,
            100% {
                box-shadow: 0 0 16px rgba(0, 240, 255, 0.45);
            }
            50% {
                box-shadow: 0 0 28px rgba(0, 240, 255, 0.75);
            }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .nav-links a {
                padding: 8px 10px;
                font-size: 0.82rem;
            }
            .page-hero h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                background: rgba(8, 9, 15, 0.96);
                flex-direction: column;
                padding: 20px;
                gap: 12px;
                border-bottom: 1px solid var(--border-color);
            }
            .nav-links.show {
                display: flex;
            }
            .nav-actions {
                gap: 8px;
            }
            .btn-login,
            .btn-signup {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
            .page-hero {
                padding: 120px 0 50px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .promo-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .logo span {
                font-size: 0.95rem;
            }
            .fab-float {
                left: 14px;
                bottom: 70px;
                width: 46px;
                height: 46px;
            }
        }

/* roulang page: category4 */
:root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --card-bg: rgba(13, 17, 30, 0.85);
            --glass-bg: rgba(8, 9, 15, 0.7);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-neon: #00F0FF;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --border-color: rgba(0, 82, 255, 0.3);
            --border-glow: rgba(0, 240, 255, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.3);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --font-primary: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --glass-blur: blur(16px);
            --max-width: 1280px;
            --nav-height: 72px;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-primary);
            background: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 20% 50%, rgba(0, 82, 255, 0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 20%, rgba(0, 240, 255, 0.05) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 80%, rgba(0, 82, 255, 0.06) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

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

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

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

        button,
        .btn {
            cursor: pointer;
            font-family: var(--font-primary);
            border: none;
            outline: none;
            transition: all var(--transition-smooth);
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: var(--glass-blur);
            -webkit-backdrop-filter: var(--glass-blur);
            border-bottom: 1px solid rgba(0, 82, 255, 0.25);
            height: var(--nav-height);
            transition: background var(--transition-smooth);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.95);
            border-bottom-color: rgba(0, 240, 255, 0.4);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
        }

        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            letter-spacing: -0.3px;
        }

        .logo i {
            color: var(--accent-cyan);
            font-size: 1.5rem;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }

        .nav-links a {
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-smooth);
            position: relative;
            white-space: nowrap;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--accent-cyan);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login {
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            transition: all var(--transition-smooth);
        }

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

        .btn-signup {
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 700;
            color: #08090F;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.35);
            transition: all var(--transition-smooth);
        }

        .btn-signup:hover {
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.6);
            transform: translateY(-2px);
            color: #08090F;
        }

        .mobile-toggle {
            display: none;
            background: none;
            font-size: 1.5rem;
            color: var(--text-primary);
            padding: 8px;
        }

        /* Hero Section */
        .page-hero {
            position: relative;
            padding: 140px 0 80px;
            background: linear-gradient(180deg, rgba(0, 82, 255, 0.1) 0%, transparent 60%);
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 70%;
            height: 180%;
            background: radial-gradient(ellipse at center, rgba(0, 240, 255, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-text h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            color: var(--text-primary);
            letter-spacing: -0.5px;
        }

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

        .hero-text p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.7;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-primary-glow {
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-size: 1rem;
            font-weight: 700;
            color: #08090F;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            box-shadow: 0 0 24px rgba(0, 240, 255, 0.45);
            transition: all var(--transition-smooth);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary-glow:hover {
            box-shadow: 0 0 36px rgba(0, 240, 255, 0.7);
            transform: translateY(-3px);
            color: #08090F;
        }

        .btn-outline-glass {
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.25);
            backdrop-filter: blur(8px);
            transition: all var(--transition-smooth);
        }

        .btn-outline-glass:hover {
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
            color: var(--accent-cyan);
        }

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

        .hero-visual img {
            border-radius: var(--radius-lg);
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.2), 0 16px 48px rgba(0, 0, 0, 0.5);
            border: 1px solid rgba(0, 240, 255, 0.3);
        }

        /* Trust Bar */
        .trust-bar {
            background: rgba(13, 17, 30, 0.6);
            backdrop-filter: blur(8px);
            border-top: 1px solid rgba(0, 240, 255, 0.2);
            border-bottom: 1px solid rgba(0, 240, 255, 0.2);
            padding: 16px 0;
        }

        .trust-items {
            display: flex;
            justify-content: center;
            gap: 48px;
            flex-wrap: wrap;
            align-items: center;
        }

        .trust-items span {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
        }

        .trust-items span i {
            color: var(--accent-cyan);
            font-size: 1.1rem;
        }

        /* Section Styles */
        .section {
            padding: 60px 0;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
            letter-spacing: -0.3px;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            max-width: 600px;
        }

        /* Download Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .step-card {
            background: var(--card-bg);
            backdrop-filter: var(--glass-blur);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .step-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue));
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

        .step-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.15);
            transform: translateY(-4px);
        }

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

        .step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            color: #08090F;
            margin-bottom: 16px;
        }

        .step-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

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

        /* Platform Cards */
        .platform-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }

        .platform-card {
            background: var(--card-bg);
            backdrop-filter: var(--glass-blur);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            text-align: left;
            transition: all var(--transition-smooth);
        }

        .platform-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.2);
        }

        .platform-card .platform-icon {
            font-size: 2.8rem;
            color: var(--accent-cyan);
            margin-bottom: 16px;
        }

        .platform-card h3 {
            font-size: 1.4rem;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .platform-card ul {
            list-style: none;
            margin-bottom: 20px;
        }

        .platform-card ul li {
            padding: 6px 0;
            color: var(--text-secondary);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .platform-card ul li i {
            color: var(--accent-cyan);
            font-size: 0.8rem;
        }

        .btn-download-sm {
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.9rem;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            color: #08090F;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            box-shadow: 0 0 14px rgba(0, 240, 255, 0.3);
        }

        .btn-download-sm:hover {
            box-shadow: 0 0 24px rgba(0, 240, 255, 0.5);
            color: #08090F;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
        }

        .faq-item {
            background: var(--card-bg);
            backdrop-filter: blur(8px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

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

        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1rem;
            color: var(--text-primary);
        }

        .faq-question i {
            transition: transform var(--transition-fast);
            color: var(--accent-cyan);
        }

        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

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

        /* CTA Banner */
        .cta-banner {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.2), rgba(0, 240, 255, 0.1));
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: left;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::after {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 40%;
            height: 160%;
            background: radial-gradient(ellipse at center, rgba(0, 240, 255, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-banner h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-banner p {
            color: var(--text-secondary);
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
            max-width: 500px;
        }

        .cta-banner .btn-primary-glow {
            position: relative;
            z-index: 1;
        }

        /* Footer */
        .site-footer {
            background: var(--secondary-bg);
            border-top: 1px solid rgba(0, 240, 255, 0.2);
            padding: 48px 0 24px;
            margin-top: 60px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--accent-cyan);
        }

        .footer-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .footer-badge {
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: var(--radius-sm);
            padding: 6px 12px;
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.8rem;
        }

        /* FAB */
        .fab-float {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 50;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.75);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.4);
            transition: all var(--transition-smooth);
            animation: floatBreath 3s ease-in-out infinite;
        }

        .fab-float::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50%;
            padding: 2px;
            background: linear-gradient(135deg, #00F0FF, #0052FF);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            opacity: 0.9;
        }

        @keyframes floatBreath {
            0%,
            100% {
                transform: translateY(0);
                opacity: 0.7;
            }
            50% {
                transform: translateY(-6px);
                opacity: 1;
            }
        }

        .fab-float:hover {
            transform: scale(1.15);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.7);
            animation: none;
            opacity: 1;
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-content {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-text h1 {
                font-size: 2.2rem;
            }
            .platform-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .nav-links {
                gap: 0;
            }
            .nav-links a {
                padding: 8px 12px;
                font-size: 0.8rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                background: rgba(8, 9, 15, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px;
                border-bottom: 1px solid var(--border-color);
                gap: 4px;
            }
            .nav-links.show {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-actions {
                display: flex;
            }
            .hero-text h1 {
                font-size: 1.8rem;
            }
            .trust-items {
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .cta-banner {
                padding: 32px 24px;
            }
            .cta-banner h2 {
                font-size: 1.5rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .hero-actions {
                flex-direction: column;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-text h1 {
                font-size: 1.5rem;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
        }