/* roulang page: index */
:root {
            --bg-primary: #0A0E1A;
            --bg-secondary: #111827;
            --bg-card: #1A2236;
            --accent-cyan: #00F0FF;
            --accent-blue: #0052FF;
            --accent-green: #32CD32;
            --accent-pink: #FF007F;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --text-muted: #6B7280;
            --border-dark: #1F2937;
            --border-neon: rgba(0, 240, 255, 0.4);
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.3);
            --shadow-card: 0 10px 30px rgba(0,0,0,0.5);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-xxl: 96px;
            --font-main: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
        }

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

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

        body {
            font-family: var(--font-main);
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.65;
            font-size: 16px;
            overflow-x: hidden;
        }

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

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

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

        button {
            cursor: pointer;
            font-family: inherit;
            transition: var(--transition);
        }

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

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 14, 26, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.1);
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: rgba(10, 14, 26, 0.98);
            box-shadow: 0 5px 30px rgba(0,0,0,0.5);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--spacing-sm) 0;
            gap: var(--spacing-md);
            min-height: 64px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            font-weight: 800;
            font-size: 1.15rem;
            color: var(--text-white);
            white-space: nowrap;
            letter-spacing: -0.02em;
            flex-shrink: 0;
        }

        .nav-logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            border-radius: var(--radius-sm);
            font-size: 1.2rem;
            flex-shrink: 0;
            box-shadow: var(--shadow-neon);
        }

        .nav-logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.15;
        }

        .nav-logo-text .main-name {
            font-size: 0.95rem;
            font-weight: 800;
            color: var(--text-white);
        }

        .nav-logo-text .sub-name {
            font-size: 0.7rem;
            color: var(--accent-cyan);
            font-weight: 500;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-wrap: wrap;
            justify-content: center;
        }

        .nav-links a {
            color: var(--text-silver);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 20px;
            transition: var(--transition);
            white-space: nowrap;
            position: relative;
        }

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

        .nav-links a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-shrink: 0;
        }

        .btn-login {
            background: transparent;
            border: 1px solid var(--border-dark);
            color: var(--text-white);
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            transition: var(--transition);
            white-space: nowrap;
        }

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

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            border: none;
            color: #0A0E1A;
            padding: 8px 20px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 700;
            transition: var(--transition);
            white-space: nowrap;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 25px rgba(0, 240, 255, 0.5);
            background: linear-gradient(135deg, #00F0FF, #4D7FFF);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border-dark);
            color: var(--text-white);
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            font-size: 1.3rem;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .mobile-toggle:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
        }

        /* Hero Section */
        .hero-section {
            padding-top: 140px;
            padding-bottom: var(--spacing-xl);
            background: linear-gradient(180deg, #0A0E1A 0%, #0D1526 50%, #0A0E1A 100%);
            position: relative;
            overflow: hidden;
            min-height: 70vh;
            display: flex;
            align-items: center;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
            z-index: 0;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at center, rgba(0,240,255,0.05) 0%, transparent 70%);
            z-index: 0;
        }

        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 800px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-xs);
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            color: var(--accent-cyan);
            font-weight: 600;
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.02em;
        }

        .hero-badge .pulse-dot {
            width: 8px;
            height: 8px;
            background: var(--accent-green);
            border-radius: 50%;
            animation: pulse 1.5s ease-in-out infinite;
        }

        @keyframes pulse {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.5); }
        }

        .hero-title {
            font-size: clamp(2.2rem, 5vw, 3.5rem);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.03em;
            margin-bottom: var(--spacing-md);
            background: linear-gradient(135deg, #FFFFFF 0%, #00F0FF 50%, #4D7FFF 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-description {
            font-size: 1.05rem;
            color: var(--text-silver);
            line-height: 1.7;
            margin-bottom: var(--spacing-lg);
            max-width: 650px;
        }

        .hero-cta-group {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
            margin-bottom: var(--spacing-lg);
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            color: #0A0E1A;
            padding: 14px 28px;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 700;
            border: none;
            transition: var(--transition);
            box-shadow: 0 5px 25px rgba(0, 240, 255, 0.3);
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-xs);
            white-space: nowrap;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 35px rgba(0, 240, 255, 0.5);
            background: linear-gradient(135deg, #4DFFF5, #4D7FFF);
            color: #0A0E1A;
        }

        .btn-secondary {
            background: rgba(255,255,255,0.05);
            color: var(--text-white);
            padding: 14px 28px;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 600;
            border: 1px solid var(--border-dark);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-xs);
            white-space: nowrap;
        }

        .btn-secondary:hover {
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.1);
            transform: translateY(-3px);
            color: var(--accent-cyan);
        }

        .hero-trust-bar {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            flex-wrap: wrap;
            padding-top: var(--spacing-sm);
            border-top: 1px solid var(--border-dark);
        }

        .trust-item {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .trust-item .trust-icon {
            color: var(--accent-green);
            font-size: 1rem;
        }

        .hero-stats {
            display: flex;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
            margin-top: var(--spacing-md);
        }

        .stat-block {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .stat-number {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent-cyan);
            letter-spacing: -0.02em;
        }

        .stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

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

        .section-header {
            margin-bottom: var(--spacing-lg);
            max-width: 700px;
        }

        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: var(--spacing-xs);
        }

        .section-title {
            font-size: clamp(1.8rem, 3.5vw, 2.5rem);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin-bottom: var(--spacing-sm);
            color: var(--text-white);
        }

        .section-description {
            font-size: 1rem;
            color: var(--text-silver);
            line-height: 1.7;
            max-width: 600px;
        }

        /* Entrance Matrix */
        .entrance-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: var(--spacing-md);
            margin-top: var(--spacing-lg);
        }

        .entrance-card {
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
            cursor: pointer;
            text-decoration: none;
            color: var(--text-white);
            display: block;
        }

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

        .entrance-card:hover {
            border-color: var(--border-neon);
            box-shadow: var(--shadow-neon);
            transform: translateY(-5px);
        }

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

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

        .entrance-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: var(--spacing-xs);
            color: var(--text-white);
        }

        .entrance-card p {
            font-size: 0.9rem;
            color: var(--text-silver);
            line-height: 1.6;
            margin-bottom: var(--spacing-sm);
        }

        .entrance-link {
            font-size: 0.85rem;
            color: var(--accent-cyan);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* Milestone / Process */
        .milestone-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: var(--spacing-md);
            margin-top: var(--spacing-lg);
        }

        .milestone-card {
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            transition: var(--transition);
            position: relative;
        }

        .milestone-card:hover {
            border-color: rgba(0, 240, 255, 0.3);
            box-shadow: 0 5px 20px rgba(0,0,0,0.3);
        }

        .milestone-number {
            font-size: 2.5rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1;
            margin-bottom: var(--spacing-sm);
            display: block;
        }

        .milestone-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: var(--spacing-xs);
            color: var(--text-white);
        }

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

        /* Review Bubbles */
        .review-wall {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: var(--spacing-md);
            margin-top: var(--spacing-lg);
        }

        .review-bubble {
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            transition: var(--transition);
            position: relative;
        }

        .review-bubble:hover {
            border-color: rgba(0, 240, 255, 0.3);
            transform: translateY(-3px);
            box-shadow: 0 5px 20px rgba(0,0,0,0.3);
        }

        .review-header {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            margin-bottom: var(--spacing-sm);
        }

        .review-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #0A0E1A;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .review-name {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-white);
        }

        .review-time {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        .review-text {
            font-size: 0.9rem;
            color: var(--text-silver);
            line-height: 1.6;
        }

        .review-stars {
            color: #FFD700;
            font-size: 0.8rem;
            margin-bottom: var(--spacing-xs);
        }

        /* Ranking List */
        .ranking-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
            margin-top: var(--spacing-lg);
        }

        .ranking-row {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-sm);
            padding: var(--spacing-sm) var(--spacing-md);
            transition: var(--transition);
        }

        .ranking-row:hover {
            border-color: rgba(0, 240, 255, 0.3);
            background: rgba(0, 240, 255, 0.03);
        }

        .rank-number {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--accent-cyan);
            min-width: 40px;
            text-align: center;
        }

        .rank-content {
            flex: 1;
        }

        .rank-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 2px;
        }

        .rank-meta {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        .rank-indicator {
            font-size: 0.8rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 12px;
            white-space: nowrap;
        }

        .rank-indicator.hot {
            background: rgba(255, 0, 127, 0.15);
            color: var(--accent-pink);
            border: 1px solid rgba(255, 0, 127, 0.3);
        }

        .rank-indicator.new {
            background: rgba(50, 205, 50, 0.15);
            color: var(--accent-green);
            border: 1px solid rgba(50, 205, 50, 0.3);
        }

        /* News / CMS */
        .news-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: var(--spacing-lg);
            margin-top: var(--spacing-lg);
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .news-item {
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-md);
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-sm);
            padding: var(--spacing-md);
            transition: var(--transition);
            text-decoration: none;
            color: var(--text-white);
        }

        .news-item:hover {
            border-color: rgba(0, 240, 255, 0.3);
            transform: translateX(5px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.3);
        }

        .news-item-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: rgba(0, 240, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.2rem;
            flex-shrink: 0;
        }

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

        .news-item-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 4px;
            line-height: 1.4;
        }

        .news-item-meta {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        .news-sidebar {
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            height: fit-content;
        }

        .news-sidebar h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            color: var(--text-white);
        }

        .sidebar-item {
            padding: var(--spacing-xs) 0;
            border-bottom: 1px solid var(--border-dark);
            font-size: 0.85rem;
            color: var(--text-silver);
            transition: var(--transition);
        }

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

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

        /* Trust & Security */
        .trust-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: var(--spacing-md);
            margin-top: var(--spacing-lg);
        }

        .trust-card {
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            text-align: center;
            transition: var(--transition);
        }

        .trust-card:hover {
            border-color: rgba(0, 240, 255, 0.3);
            box-shadow: 0 5px 20px rgba(0,0,0,0.3);
            transform: translateY(-3px);
        }

        .trust-icon {
            font-size: 2rem;
            color: var(--accent-cyan);
            margin-bottom: var(--spacing-xs);
        }

        .trust-card h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 4px;
        }

        .trust-card p {
            font-size: 0.8rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
            margin-top: var(--spacing-lg);
            max-width: 800px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(0, 240, 255, 0.3);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--spacing-md);
            cursor: pointer;
            font-weight: 600;
            color: var(--text-white);
            font-size: 0.95rem;
            gap: var(--spacing-sm);
        }

        .faq-question .faq-icon {
            color: var(--accent-cyan);
            font-size: 1.2rem;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-answer {
            padding: 0 var(--spacing-md) var(--spacing-md);
            font-size: 0.9rem;
            color: var(--text-silver);
            line-height: 1.7;
            display: none;
        }

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

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

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.05), rgba(0, 82, 255, 0.05));
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            text-align: center;
            margin-top: var(--spacing-xl);
        }

        .cta-section h2 {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            font-weight: 800;
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.02em;
        }

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

        /* FAB */
        .fab-support {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 999;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(10, 14, 26, 0.9);
            border: 2px solid var(--accent-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            transition: var(--transition);
            cursor: pointer;
            animation: fabFloat 3s ease-in-out infinite;
        }

        .fab-support:hover {
            transform: scale(1.1);
            box-shadow: 0 0 35px rgba(0, 240, 255, 0.7);
            background: rgba(0, 240, 255, 0.2);
        }

        .fab-support::after {
            content: '';
            position: absolute;
            top: 4px;
            right: 4px;
            width: 10px;
            height: 10px;
            background: #FF007F;
            border-radius: 50%;
            border: 2px solid #0A0E1A;
            animation: blink 1.5s ease-in-out infinite;
        }

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

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

        /* Footer */
        .site-footer {
            background: #070A12;
            border-top: 1px solid var(--border-dark);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: var(--spacing-xl);
        }

        .footer-content {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-xl);
        }

        .footer-brand {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: var(--spacing-sm);
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
        }

        .footer-description {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: var(--spacing-sm);
        }

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

        .footer-col ul li {
            margin-bottom: var(--spacing-xs);
        }

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

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

        .footer-bottom {
            border-top: 1px solid var(--border-dark);
            padding-top: var(--spacing-md);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }

        .footer-copyright {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .footer-badges {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .footer-badge {
            font-size: 0.7rem;
            padding: 4px 10px;
            border-radius: 12px;
            border: 1px solid var(--border-dark);
            color: var(--text-muted);
        }

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

        @media (max-width: 768px) {
            .nav-wrapper {
                flex-wrap: wrap;
            }

            .mobile-toggle {
                display: flex;
            }

            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding: var(--spacing-sm) 0;
                gap: 4px;
            }

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

            .nav-links a {
                padding: 10px 16px;
                text-align: left;
                border-radius: var(--radius-sm);
            }

            .nav-actions {
                gap: 6px;
            }

            .btn-login, .btn-signup {
                padding: 6px 12px;
                font-size: 0.8rem;
            }

            .hero-section {
                padding-top: 120px;
                min-height: auto;
            }

            .hero-stats {
                gap: var(--spacing-md);
            }

            .news-layout {
                grid-template-columns: 1fr;
            }

            .news-sidebar {
                order: -1;
            }

            .section {
                padding: var(--spacing-lg) 0;
            }

            .entrance-grid,
            .milestone-grid,
            .review-wall,
            .trust-grid {
                grid-template-columns: 1fr;
            }

            .cta-section {
                padding: var(--spacing-lg);
            }

            .footer-content {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
        }

        @media (max-width: 520px) {
            .nav-logo-text .main-name {
                font-size: 0.8rem;
            }

            .nav-logo-text .sub-name {
                font-size: 0.65rem;
            }

            .nav-actions {
                gap: 4px;
            }

            .btn-login, .btn-signup {
                padding: 5px 10px;
                font-size: 0.75rem;
            }

            .hero-title {
                font-size: 1.8rem;
            }

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

            .hero-cta-group {
                flex-direction: column;
                align-items: stretch;
            }

            .btn-primary, .btn-secondary {
                width: 100%;
                justify-content: center;
                text-align: center;
            }

            .ranking-row {
                flex-wrap: wrap;
                gap: var(--spacing-xs);
            }

            .rank-indicator {
                margin-left: auto;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: #111827;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #8B9BB4;
            --border-subtle: rgba(0, 240, 255, 0.15);
            --border-glow: rgba(0, 240, 255, 0.45);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 18px rgba(0, 240, 255, 0.15);
            --font-main: 'Segoe UI', 'Inter', system-ui, -apple-system, 'Roboto', 'Helvetica Neue', sans-serif;
            --font-display: 'Segoe UI', 'Inter', system-ui, -apple-system, 'Roboto', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-main);
            background-color: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.6;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
        }

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

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }

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

        button {
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }

        button:focus-visible, a:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.95);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
            gap: 16px;
        }

        .logo {
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 1.3rem;
            color: var(--text-white);
            letter-spacing: -0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: white;
            flex-shrink: 0;
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.4);
        }

        .logo span {
            background: linear-gradient(135deg, #FFFFFF, #CBD5E1);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            flex-shrink: 0;
        }

        .nav-links a {
            color: var(--text-silver);
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            padding: 6px 2px;
            transition: color 0.2s ease;
            white-space: nowrap;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            transition: width 0.3s ease;
            border-radius: 2px;
        }

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

        .nav-links a:hover::after {
            width: 100%;
        }

        .nav-links a.active {
            color: var(--accent-cyan);
        }

        .nav-links a.active::after {
            width: 100%;
        }

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

        .btn-login {
            color: var(--text-silver);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 8px 16px;
            border-radius: 8px;
            transition: all 0.2s ease;
            white-space: nowrap;
        }

        .btn-login:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.08);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: white;
            font-weight: 700;
            font-size: 0.9rem;
            padding: 10px 22px;
            border-radius: 8px;
            transition: all 0.3s ease;
            white-space: nowrap;
            box-shadow: 0 4px 14px rgba(0, 82, 255, 0.35);
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 22px rgba(0, 240, 255, 0.45);
        }

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

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            border: none;
            padding: 6px;
            cursor: pointer;
            z-index: 1001;
        }

        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2px;
            background: var(--text-white);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

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

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

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

        /* Article Hero */
        .article-hero {
            padding: 140px 0 60px;
            background: radial-gradient(ellipse at 30% 20%, rgba(0, 82, 255, 0.15) 0%, transparent 55%),
                        radial-gradient(ellipse at 70% 60%, rgba(0, 240, 255, 0.08) 0%, transparent 50%);
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: 
                linear-gradient(rgba(0, 240, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 240, 255, 0.03) 1px, transparent 1px);
            background-size: 40px 40px;
            pointer-events: none;
        }

        .article-hero-content {
            position: relative;
            z-index: 1;
            max-width: 860px;
        }

        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 20px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .article-breadcrumb a {
            color: var(--text-muted);
            transition: color 0.2s ease;
        }

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

        .article-breadcrumb .separator {
            color: var(--text-muted);
            opacity: 0.5;
        }

        .article-breadcrumb .current {
            color: var(--accent-cyan);
            font-weight: 500;
        }

        .article-category-tag {
            display: inline-block;
            background: rgba(0, 240, 255, 0.12);
            color: var(--accent-cyan);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            border: 1px solid var(--border-glow);
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .article-hero h1 {
            font-family: var(--font-display);
            font-size: clamp(2rem, 5vw, 3.2rem);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.03em;
            margin-bottom: 20px;
            color: var(--text-white);
        }

        .article-hero .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .article-hero .article-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-hero .article-meta .meta-icon {
            color: var(--accent-cyan);
            font-size: 0.95rem;
        }

        /* Article Body */
        .article-body-section {
            padding: 60px 0;
            flex: 1;
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }

        .article-main {
            min-width: 0;
        }

        .article-featured-image {
            margin-bottom: 32px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-card);
        }

        .article-featured-image img {
            width: 100%;
            border-radius: var(--radius-lg);
        }

        .article-content {
            font-size: 1.05rem;
            color: var(--text-silver);
            line-height: 1.7;
        }

        .article-content h2 {
            font-family: var(--font-display);
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--text-white);
            margin: 40px 0 16px;
            letter-spacing: -0.02em;
            line-height: 1.3;
        }

        .article-content h3 {
            font-family: var(--font-display);
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--text-white);
            margin: 32px 0 12px;
            letter-spacing: -0.01em;
        }

        .article-content p {
            margin-bottom: 18px;
        }

        .article-content ul, .article-content ol {
            margin: 0 0 20px 24px;
            color: var(--text-silver);
        }

        .article-content li {
            margin-bottom: 10px;
            padding-left: 4px;
        }

        .article-content strong {
            color: var(--text-white);
            font-weight: 600;
        }

        .article-content blockquote {
            border-left: 3px solid var(--accent-cyan);
            background: rgba(0, 240, 255, 0.05);
            padding: 18px 22px;
            margin: 24px 0;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text-silver);
            font-style: italic;
        }

        .article-content img {
            margin: 24px 0;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
        }

        .article-content a {
            color: var(--accent-cyan);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

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

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 0.95rem;
        }

        .article-content table th,
        .article-content table td {
            padding: 12px 16px;
            text-align: left;
            border-bottom: 1px solid var(--border-subtle);
        }

        .article-content table th {
            background: rgba(0, 240, 255, 0.08);
            color: var(--text-white);
            font-weight: 600;
        }

        .article-content table td {
            color: var(--text-silver);
        }

        .article-not-found {
            text-align: center;
            padding: 80px 20px;
            background: var(--bg-secondary);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
        }

        .article-not-found h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .btn-back-home {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: white;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 8px;
            transition: all 0.3s ease;
            box-shadow: 0 4px 14px rgba(0, 82, 255, 0.35);
        }

        .btn-back-home:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 22px rgba(0, 240, 255, 0.45);
            color: white;
        }

        /* Article Sidebar */
        .article-sidebar {
            position: sticky;
            top: 100px;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .sidebar-widget {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-card);
        }

        .sidebar-widget h3 {
            font-family: var(--font-display);
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-widget h3 .widget-icon {
            color: var(--accent-cyan);
            font-size: 1.1rem;
        }

        .sidebar-toc {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .sidebar-toc li a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-silver);
            font-size: 0.9rem;
            padding: 8px 12px;
            border-radius: 8px;
            transition: all 0.2s ease;
        }

        .sidebar-toc li a:hover {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.08);
        }

        .sidebar-toc li a .toc-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-cyan);
            flex-shrink: 0;
        }

        .sidebar-promo {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.2), rgba(0, 240, 255, 0.1));
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 24px;
            text-align: center;
            box-shadow: var(--shadow-glow);
        }

        .sidebar-promo h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
        }

        .sidebar-promo p {
            font-size: 0.9rem;
            color: var(--text-silver);
            margin-bottom: 16px;
        }

        .sidebar-promo .btn-promo {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: white;
            font-weight: 600;
            font-size: 0.9rem;
            padding: 10px 20px;
            border-radius: 8px;
            transition: all 0.3s ease;
        }

        .sidebar-promo .btn-promo:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 22px rgba(0, 240, 255, 0.45);
            color: white;
        }

        /* CTA Section */
        .article-cta-section {
            padding: 60px 0 80px;
            background: radial-gradient(ellipse at center, rgba(0, 82, 255, 0.1) 0%, transparent 60%);
            border-top: 1px solid var(--border-subtle);
        }

        .article-cta-box {
            background: var(--bg-secondary);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 48px;
            text-align: center;
            box-shadow: var(--shadow-glow);
            max-width: 800px;
            margin: 0 auto;
        }

        .article-cta-box h2 {
            font-family: var(--font-display);
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

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

        .article-cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-cta-primary {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: white;
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 32px;
            border-radius: 10px;
            transition: all 0.3s ease;
            box-shadow: 0 6px 20px rgba(0, 82, 255, 0.4);
        }

        .btn-cta-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 28px rgba(0, 240, 255, 0.5);
            color: white;
        }

        .btn-cta-secondary {
            background: transparent;
            color: var(--text-white);
            font-weight: 600;
            font-size: 1rem;
            padding: 14px 32px;
            border-radius: 10px;
            border: 1px solid var(--border-glow);
            transition: all 0.3s ease;
        }

        .btn-cta-secondary:hover {
            background: rgba(0, 240, 255, 0.1);
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
        }

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

        .footer-content {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--text-white);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-description {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 400px;
        }

        .footer-col h4 {
            font-family: var(--font-display);
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

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

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

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }

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

        .footer-badges {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-silver);
            font-size: 0.8rem;
            padding: 6px 14px;
            border-radius: 20px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid var(--border-subtle);
        }

        /* Floating Action Button */
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 900;
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: rgba(8, 9, 15, 0.7);
            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;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.35);
            cursor: pointer;
            opacity: 0.7;
            transition: all 0.3s ease;
            font-size: 1.4rem;
            color: var(--accent-cyan);
            position: relative;
        }

        .fab-left::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 16px;
            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);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            pointer-events: none;
        }

        .fab-left:hover {
            opacity: 1;
            transform: scale(1.08);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.55);
        }

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

        .fab-left .notification-dot {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 14px;
            height: 14px;
            background: var(--accent-pink);
            border-radius: 50%;
            border: 2px solid var(--bg-primary);
            animation: blink-neon 1.5s ease-in-out infinite;
        }

        @keyframes blink-neon {
            0%, 100% { opacity: 1; box-shadow: 0 0 8px rgba(255, 0, 127, 0.6); }
            50% { opacity: 0.5; box-shadow: 0 0 4px rgba(255, 0, 127, 0.3); }
        }

        /* Mobile Menu Overlay */
        .mobile-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 999;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .mobile-overlay.active {
            opacity: 1;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }

            .footer-content {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .nav-container {
                height: 64px;
                gap: 12px;
            }

            .logo {
                font-size: 1.05rem;
            }

            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.95rem;
            }

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

            .btn-login {
                font-size: 0.8rem;
                padding: 6px 12px;
            }

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

            .nav-toggle {
                display: flex;
            }

            .nav-links {
                position: fixed;
                top: 64px;
                right: -100%;
                width: 280px;
                height: calc(100vh - 64px);
                background: var(--bg-secondary);
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
                padding: 24px;
                border-left: 1px solid var(--border-subtle);
                transition: right 0.3s ease;
                z-index: 1000;
                box-shadow: -8px 0 24px rgba(0, 0, 0, 0.5);
                overflow-y: auto;
            }

            .nav-links.open {
                right: 0;
            }

            .nav-links a {
                font-size: 1rem;
                padding: 12px 16px;
                width: 100%;
                border-radius: 8px;
            }

            .nav-links a:hover {
                background: rgba(0, 240, 255, 0.08);
            }

            .nav-links a::after {
                display: none;
            }

            .mobile-overlay {
                display: block;
                pointer-events: none;
            }

            .mobile-overlay.active {
                pointer-events: auto;
            }

            .article-hero {
                padding: 120px 0 40px;
            }

            .article-hero h1 {
                font-size: clamp(1.8rem, 4vw, 2.4rem);
            }

            .article-body-section {
                padding: 40px 0;
            }

            .article-sidebar {
                grid-template-columns: 1fr;
            }

            .article-cta-section {
                padding: 40px 0 60px;
            }

            .article-cta-box {
                padding: 32px 24px;
            }

            .article-cta-actions {
                flex-direction: column;
                gap: 12px;
            }

            .btn-cta-primary,
            .btn-cta-secondary {
                width: 100%;
                text-align: center;
            }

            .footer-content {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 16px;
            }

            .footer-badges {
                justify-content: center;
            }

            .fab-left {
                width: 50px;
                height: 50px;
                font-size: 1.2rem;
                left: 12px;
                bottom: 80px;
                border-radius: 14px;
            }
        }

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

            .nav-container {
                height: 60px;
                gap: 8px;
            }

            .logo {
                font-size: 0.9rem;
                gap: 6px;
            }

            .logo-icon {
                width: 26px;
                height: 26px;
                font-size: 0.85rem;
            }

            .btn-login {
                font-size: 0.75rem;
                padding: 5px 10px;
            }

            .btn-signup {
                font-size: 0.75rem;
                padding: 7px 14px;
            }

            .nav-links {
                top: 60px;
                height: calc(100vh - 60px);
                width: 260px;
                padding: 16px;
            }

            .article-hero {
                padding: 110px 0 32px;
            }

            .article-hero h1 {
                font-size: 1.6rem;
            }

            .article-hero .article-meta {
                gap: 12px;
                font-size: 0.8rem;
            }

            .article-content {
                font-size: 0.95rem;
            }

            .article-content h2 {
                font-size: 1.4rem;
            }

            .article-content h3 {
                font-size: 1.15rem;
            }

            .article-cta-box {
                padding: 24px 16px;
            }

            .article-cta-box h2 {
                font-size: 1.4rem;
            }

            .sidebar-widget {
                padding: 20px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0A2E1C;
            --bg-secondary: #123E25;
            --bg-dark: #062315;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-white: #FFFFFF;
            --text-mint: #D1F2EB;
            --text-muted: rgba(255, 255, 255, 0.7);
            --border-gold: rgba(255, 215, 0, 0.35);
            --shadow-gold: rgba(255, 215, 0, 0.2);
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --spacing-section: 80px;
            --spacing-gap: 28px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-main: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
        }

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

        body {
            font-family: var(--font-main);
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(10, 46, 28, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-gold);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0;
            flex-wrap: wrap;
            gap: 12px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--accent-gold);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-gold), #FFA500);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--bg-primary);
            flex-shrink: 0;
            box-shadow: 0 0 16px rgba(255, 215, 0, 0.5);
        }

        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .logo-text strong {
            font-size: 1.1rem;
            color: var(--text-white);
        }

        .logo-text span {
            font-size: 0.75rem;
            color: var(--accent-gold);
            font-weight: 500;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .nav-links a {
            padding: 8px 16px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.9rem;
            color: var(--text-mint);
            transition: var(--transition);
            position: relative;
        }

        .nav-links a:hover {
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.08);
        }

        .nav-links a.active {
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.12);
            box-shadow: inset 0 0 0 1px var(--border-gold);
        }

        .nav-auth {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .btn-login {
            padding: 8px 18px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.88rem;
            color: var(--text-white);
            background: transparent;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-login:hover {
            color: var(--accent-gold);
        }

        .btn-signup {
            padding: 10px 22px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.88rem;
            color: var(--bg-primary);
            background: linear-gradient(135deg, var(--accent-gold), #FFC107);
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 14px rgba(255, 215, 0, 0.4);
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 215, 0, 0.55);
            background: linear-gradient(135deg, #FFE033, #FFD700);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-sm);
            color: var(--accent-gold);
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 1.3rem;
            transition: var(--transition);
        }

        .mobile-toggle:hover {
            background: rgba(255, 215, 0, 0.1);
        }

        /* ===== Category Page Hero ===== */
        .category-hero {
            position: relative;
            padding: 80px 0 60px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(211, 47, 47, 0.1) 0%, transparent 70%);
            pointer-events: none;
        }

        .category-hero-content {
            position: relative;
            z-index: 2;
            max-width: 750px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 215, 0, 0.15);
            border: 1px solid var(--border-gold);
            border-radius: 50px;
            padding: 6px 16px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-gold);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 20px;
        }

        .hero-badge .pulse-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #4CAF50;
            animation: pulse 1.5s infinite;
        }

        @keyframes pulse {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.5); }
        }

        .category-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-white);
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }

        .category-hero h1 .highlight {
            color: var(--accent-gold);
            text-shadow: 0 0 30px rgba(255, 215, 0, 0.4);
        }

        .category-hero p {
            font-size: 1.1rem;
            color: var(--text-mint);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 650px;
        }

        .hero-cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-primary-cta {
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            color: var(--bg-primary);
            background: linear-gradient(135deg, var(--accent-gold), #FFC107);
            border: none;
            cursor: pointer;
            box-shadow: 0 6px 20px rgba(255, 215, 0, 0.45);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-primary-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(255, 215, 0, 0.6);
        }

        .btn-secondary-cta {
            padding: 14px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--accent-gold);
            background: transparent;
            border: 1.5px solid var(--border-gold);
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-secondary-cta:hover {
            background: rgba(255, 215, 0, 0.1);
            border-color: var(--accent-gold);
        }

        .hero-stats {
            display: flex;
            gap: 32px;
            margin-top: 36px;
            flex-wrap: wrap;
        }

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

        .hero-stat .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1.2;
        }

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

        .hero-image-wrapper {
            position: relative;
            z-index: 1;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
            border: 2px solid var(--border-gold);
            min-height: 300px;
        }

        .hero-image-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 300px;
        }

        .hero-image-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(to top, rgba(6, 35, 21, 0.95) 0%, transparent 100%);
            padding: 30px 20px 18px;
        }

        .hero-image-overlay .overlay-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--accent-red);
            color: white;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        /* ===== Section Styles ===== */
        .section-block {
            padding: var(--spacing-section) 0;
        }

        .section-block.alt-bg {
            background: var(--bg-dark);
        }

        .section-header {
            margin-bottom: 44px;
            max-width: 700px;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
            line-height: 1.3;
        }

        .section-header h2 .accent {
            color: var(--accent-gold);
        }

        .section-header p {
            color: var(--text-mint);
            font-size: 1rem;
            line-height: 1.65;
        }

        .section-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--accent-gold);
            margin-bottom: 10px;
        }

        /* ===== Process Steps ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: var(--spacing-gap);
            counter-reset: step-counter;
        }

        .process-card {
            background: var(--bg-secondary);
            border: 1px solid rgba(255, 215, 0, 0.15);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            position: relative;
            transition: var(--transition);
            counter-increment: step-counter;
        }

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

        .process-card::before {
            content: counter(step-counter);
            position: absolute;
            top: 20px;
            right: 24px;
            font-size: 3rem;
            font-weight: 800;
            color: rgba(255, 215, 0, 0.08);
            line-height: 1;
        }

        .process-icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(255, 215, 0, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-gold);
            margin-bottom: 16px;
            border: 1px solid var(--border-gold);
        }

        .process-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
        }

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

        /* ===== Benefit List ===== */
        .benefit-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .benefit-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 16px 0;
            border-bottom: 1px solid rgba(255, 215, 0, 0.1);
            font-size: 0.95rem;
            color: var(--text-mint);
            line-height: 1.6;
        }

        .benefit-list li:last-child {
            border-bottom: none;
        }

        .benefit-icon {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 215, 0, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-gold);
            font-size: 0.9rem;
            border: 1px solid var(--border-gold);
        }

        .benefit-list strong {
            color: var(--text-white);
            font-weight: 600;
        }

        /* ===== Network Cards ===== */
        .network-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
        }

        .network-card {
            background: var(--bg-secondary);
            border: 1px solid rgba(255, 215, 0, 0.15);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            transition: var(--transition);
            cursor: pointer;
        }

        .network-card:hover {
            border-color: var(--accent-gold);
            box-shadow: 0 8px 28px rgba(255, 215, 0, 0.15);
            transform: translateY(-4px);
        }

        .network-card .network-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-gold);
            margin-bottom: 8px;
        }

        .network-card h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 4px;
        }

        .network-card p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .network-card .status-badge {
            display: inline-block;
            margin-top: 10px;
            padding: 4px 12px;
            border-radius: 50px;
            background: rgba(76, 175, 80, 0.2);
            color: #81C784;
            font-size: 0.7rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
        }

        .faq-item {
            background: var(--bg-secondary);
            border: 1px solid rgba(255, 215, 0, 0.12);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-white);
            gap: 16px;
            transition: var(--transition);
            user-select: none;
        }

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

        .faq-question .faq-toggle-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(255, 215, 0, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-gold);
            font-size: 0.8rem;
            transition: var(--transition);
        }

        .faq-item.open .faq-toggle-icon {
            transform: rotate(45deg);
            background: rgba(255, 215, 0, 0.25);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            padding: 0 24px;
        }

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

        .faq-answer p {
            padding-bottom: 20px;
            color: var(--text-mint);
            font-size: 0.9rem;
            line-height: 1.65;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-secondary) 100%);
            padding: 70px 0;
            text-align: center;
            border-top: 1px solid var(--border-gold);
            border-bottom: 1px solid var(--border-gold);
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
        }

        .cta-section h2 .accent {
            color: var(--accent-gold);
        }

        .cta-section p {
            color: var(--text-mint);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto 28px;
            line-height: 1.65;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            border-top: 2px solid var(--border-gold);
            padding: 60px 0 30px;
        }

        .footer-content {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-description {
            color: var(--text-mint);
            font-size: 0.88rem;
            line-height: 1.65;
            max-width: 350px;
        }

        .footer-col h4 {
            color: var(--text-white);
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .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: 0.88rem;
            transition: var(--transition);
        }

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 215, 0, 0.1);
            flex-wrap: wrap;
            gap: 16px;
        }

        .footer-copyright {
            color: var(--text-muted);
            font-size: 0.8rem;
        }

        .footer-badges {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .footer-badge {
            padding: 6px 14px;
            border-radius: 50px;
            background: rgba(255, 215, 0, 0.08);
            border: 1px solid var(--border-gold);
            color: var(--accent-gold);
            font-size: 0.75rem;
            font-weight: 600;
        }

        /* ===== Floating Action Button ===== */
        .fab-container {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 999;
        }

        .fab-button {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-dark);
            border: 2px solid var(--accent-gold);
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-gold);
            font-size: 1.5rem;
            cursor: pointer;
            transition: var(--transition);
            opacity: 0.7;
            position: relative;
            animation: fabBreath 3s infinite;
        }

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

        .fab-button:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 8px 32px rgba(255, 215, 0, 0.5);
        }

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

        .fab-notification {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--accent-red);
            border: 2px solid var(--bg-dark);
            animation: pulse 1.5s infinite;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .category-hero h1 {
                font-size: 2.2rem;
            }
            
            .footer-content {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 50px;
            }

            .header-inner {
                padding: 12px 0;
            }

            .mobile-toggle {
                display: flex;
            }

            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding: 12px 0 4px;
            }

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

            .nav-links a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                text-align: left;
            }

            .nav-auth {
                display: none;
            }

            .category-hero {
                padding: 50px 0 40px;
            }

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

            .category-hero p {
                font-size: 0.95rem;
            }

            .hero-stats {
                gap: 20px;
                flex-wrap: wrap;
            }

            .hero-stat .stat-number {
                font-size: 1.4rem;
            }

            .process-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .network-grid {
                grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
                gap: 12px;
            }

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

            .footer-content {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                text-align: left;
            }

            .fab-container {
                left: 12px;
                bottom: 80px;
            }

            .fab-button {
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
            }
        }

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

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

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

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

            .process-card {
                padding: 20px 16px;
            }

            .faq-question {
                padding: 16px 18px;
                font-size: 0.88rem;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0F0C20;
            --bg-secondary: #0B1A30;
            --bg-card: #151230;
            --bg-card-hover: #1A1640;
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --accent-hot-pink: #FF007F;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --text-muted: #6B7280;
            --border-neon: rgba(0, 240, 255, 0.3);
            --border-lime: rgba(204, 255, 0, 0.3);
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-lime: 0 0 20px rgba(204, 255, 0, 0.3);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --font-family: 'Be Vietnam Pro', 'Inter', sans-serif;
            --transition-fast: 0.2s ease;
            --transition-medium: 0.3s ease;
            --transition-slow: 0.5s ease;
        }

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

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

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: var(--font-family);
            transition: var(--transition-medium);
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        /* Header / Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(15, 12, 32, 0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
            padding: 12px 0;
            transition: var(--transition-medium);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
            background: rgba(15, 12, 32, 0.98);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--text-white);
            white-space: nowrap;
            letter-spacing: -0.5px;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #000;
            box-shadow: var(--shadow-lime);
        }

        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .logo-text strong {
            font-size: 0.95rem;
            font-weight: 800;
            color: var(--text-white);
        }

        .logo-text small {
            font-size: 0.65rem;
            color: var(--accent-cyan);
            font-weight: 500;
            letter-spacing: 0.5px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .nav-links a {
            color: var(--text-silver);
            font-weight: 500;
            font-size: 0.9rem;
            padding: 8px 16px;
            border-radius: 50px;
            transition: var(--transition-medium);
            position: relative;
            white-space: nowrap;
        }

        .nav-links a:hover {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.1);
        }

        .nav-links a.active {
            color: #000;
            background: var(--accent-lime);
            font-weight: 700;
            box-shadow: var(--shadow-lime);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .btn-login {
            color: var(--text-white);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 8px 20px;
            border-radius: 50px;
            transition: var(--transition-medium);
            white-space: nowrap;
        }

        .btn-login:hover {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.1);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-cyan), #0099FF);
            color: #000;
            font-weight: 700;
            font-size: 0.9rem;
            padding: 10px 24px;
            border-radius: 50px;
            box-shadow: 0 4px 15px rgba(0, 240, 255, 0.4);
            transition: var(--transition-medium);
            white-space: nowrap;
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 25px rgba(0, 240, 255, 0.6);
            color: #000;
        }

        .navbar-toggler {
            display: none;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-sm);
            padding: 8px 12px;
            color: var(--text-white);
            font-size: 1.2rem;
        }

        /* Hero Section */
        .hero-section {
            padding: 140px 0 80px;
            background: radial-gradient(ellipse at 30% 50%, rgba(204, 255, 0, 0.08) 0%, transparent 60%),
                        radial-gradient(ellipse at 70% 50%, rgba(0, 240, 255, 0.08) 0%, transparent 60%),
                        var(--bg-primary);
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: var(--spacing-xl);
            align-items: center;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(204, 255, 0, 0.15);
            border: 1px solid var(--border-lime);
            color: var(--accent-lime);
            padding: 8px 18px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.85rem;
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.5px;
        }

        .hero-badge .pulse-dot {
            width: 8px;
            height: 8px;
            background: var(--accent-lime);
            border-radius: 50%;
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.5); }
        }

        .hero-title {
            font-size: 3rem;
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -1px;
            margin-bottom: var(--spacing-md);
            color: var(--text-white);
        }

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

        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-silver);
            line-height: 1.7;
            margin-bottom: var(--spacing-lg);
            max-width: 540px;
        }

        .hero-actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-lime), #B3E600);
            color: #000;
            font-weight: 800;
            font-size: 1rem;
            padding: 14px 32px;
            border-radius: 50px;
            box-shadow: 0 4px 20px rgba(204, 255, 0, 0.4);
            transition: var(--transition-medium);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(204, 255, 0, 0.6);
            color: #000;
        }

        .btn-secondary {
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--border-neon);
            color: var(--accent-cyan);
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 28px;
            border-radius: 50px;
            transition: var(--transition-medium);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-secondary:hover {
            background: rgba(0, 240, 255, 0.2);
            transform: translateY(-3px);
            box-shadow: var(--shadow-neon);
        }

        .hero-right {
            position: relative;
        }

        .hero-card {
            background: var(--bg-card);
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
            position: relative;
            overflow: hidden;
        }

        .hero-card::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 30% 30%, rgba(204, 255, 0, 0.05) 0%, transparent 50%);
            pointer-events: none;
        }

        .hero-card-img {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: var(--spacing-md);
            position: relative;
        }

        .hero-card-img img {
            width: 100%;
            height: 240px;
            object-fit: cover;
            transition: var(--transition-slow);
        }

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

        .hero-card-badge {
            position: absolute;
            top: 16px;
            right: 16px;
            background: var(--accent-hot-pink);
            color: #fff;
            font-weight: 800;
            font-size: 0.75rem;
            padding: 6px 14px;
            border-radius: 50px;
            letter-spacing: 0.5px;
            z-index: 2;
        }

        .hero-card-info h3 {
            font-size: 1.3rem;
            font-weight: 800;
            margin-bottom: 8px;
            color: var(--text-white);
        }

        .hero-card-info p {
            color: var(--text-silver);
            font-size: 0.95rem;
            margin-bottom: var(--spacing-md);
        }

        .countdown-row {
            display: flex;
            gap: 12px;
            margin-bottom: var(--spacing-md);
        }

        .countdown-item {
            flex: 1;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-sm);
            padding: 10px;
            text-align: center;
        }

        .countdown-item .number {
            font-size: 1.6rem;
            font-weight: 900;
            color: var(--accent-cyan);
            display: block;
            line-height: 1.2;
        }

        .countdown-item .label {
            font-size: 0.7rem;
            color: var(--text-silver);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

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

        .section-header {
            text-align: left;
            margin-bottom: var(--spacing-lg);
        }

        .section-header .section-tag {
            display: inline-block;
            color: var(--accent-cyan);
            font-weight: 600;
            font-size: 0.85rem;
            letter-spacing: 1px;
            margin-bottom: 8px;
        }

        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 900;
            letter-spacing: -0.5px;
            line-height: 1.25;
            margin-bottom: 12px;
            color: var(--text-white);
        }

        .section-header p {
            color: var(--text-silver);
            font-size: 1.05rem;
            max-width: 640px;
            line-height: 1.7;
        }

        /* Code Cards */
        .code-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .code-card {
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            transition: var(--transition-medium);
            position: relative;
            overflow: hidden;
        }

        .code-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-lime), var(--accent-cyan));
            opacity: 0;
            transition: var(--transition-medium);
        }

        .code-card:hover {
            border-color: var(--border-neon);
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
            transform: translateY(-5px);
        }

        .code-card:hover::after {
            opacity: 1;
        }

        .code-card .code-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(204, 255, 0, 0.1);
            border: 1px solid var(--border-lime);
            color: var(--accent-lime);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 50px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .code-card .code-tag.hot {
            background: rgba(255, 0, 127, 0.15);
            border-color: rgba(255, 0, 127, 0.4);
            color: var(--accent-hot-pink);
        }

        .code-card h3 {
            font-size: 1.25rem;
            font-weight: 800;
            margin-bottom: 8px;
            color: var(--text-white);
        }

        .code-card p {
            color: var(--text-silver);
            font-size: 0.9rem;
            margin-bottom: var(--spacing-md);
            line-height: 1.6;
        }

        .code-card .code-value {
            background: rgba(0, 240, 255, 0.08);
            border: 1px dashed var(--border-neon);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            font-family: 'Courier New', monospace;
            font-weight: 700;
            color: var(--accent-cyan);
            font-size: 1rem;
            letter-spacing: 1px;
            margin-bottom: var(--spacing-sm);
            word-break: break-all;
        }

        .code-card .code-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-muted);
            font-size: 0.8rem;
        }

        /* Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }

        .step-item {
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            position: relative;
            transition: var(--transition-medium);
        }

        .step-item:hover {
            border-color: var(--border-neon);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
            transform: translateY(-3px);
        }

        .step-number {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 1.1rem;
            color: #000;
            margin-bottom: var(--spacing-sm);
        }

        .step-item h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-white);
        }

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

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

        .faq-item {
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: var(--radius-md);
            margin-bottom: var(--spacing-sm);
            overflow: hidden;
            transition: var(--transition-medium);
        }

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

        .faq-question {
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-white);
            transition: var(--transition-fast);
        }

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

        .faq-question .faq-icon {
            color: var(--accent-cyan);
            transition: var(--transition-medium);
        }

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

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

        .faq-item.active .faq-answer {
            max-height: 200px;
            padding-bottom: 18px;
        }

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

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, rgba(204, 255, 0, 0.1) 0%, rgba(0, 240, 255, 0.1) 100%);
            border-radius: var(--radius-xl);
            padding: var(--spacing-xl);
            text-align: center;
            margin: var(--spacing-xl) 0;
            border: 1px solid rgba(0, 240, 255, 0.2);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 50% 50%, rgba(204, 255, 0, 0.05) 0%, transparent 50%);
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 900;
            margin-bottom: 12px;
            color: var(--text-white);
            position: relative;
            z-index: 1;
        }

        .cta-section p {
            color: var(--text-silver);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto var(--spacing-lg);
            position: relative;
            z-index: 1;
        }

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

        /* Footer */
        .site-footer {
            background: #08060F;
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: var(--spacing-xl);
        }

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

        .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-white);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }

        .footer-description {
            color: var(--text-silver);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 360px;
        }

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

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

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

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

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

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

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

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

        .footer-badge {
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.2);
            color: var(--text-silver);
            font-size: 0.8rem;
            padding: 6px 14px;
            border-radius: 50px;
            white-space: nowrap;
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 999;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            background-origin: border-box;
            background-clip: padding-box, border-box;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-cyan);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
            opacity: 0.7;
            animation: fabBreathe 3s infinite;
            transition: var(--transition-medium);
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.6);
            color: var(--accent-lime);
        }

        .fab:active {
            transform: scale(0.95);
            box-shadow: 0 0 35px rgba(255, 0, 127, 0.7);
            color: var(--accent-hot-pink);
        }

        @keyframes fabBreathe {
            0%, 100% { opacity: 0.6; }
            50% { opacity: 0.9; }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 2.4rem;
            }
            .hero-content {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .code-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-content {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                padding: 10px 0;
            }
            .navbar-toggler {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(15, 12, 32, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: var(--spacing-md);
                gap: 8px;
                border-bottom: 1px solid rgba(0, 240, 255, 0.2);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                text-align: center;
            }
            .nav-actions {
                gap: 6px;
            }
            .btn-login {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .btn-signup {
                padding: 8px 16px;
                font-size: 0.8rem;
            }
            .logo-text strong {
                font-size: 0.8rem;
            }
            .logo-text small {
                font-size: 0.55rem;
            }
            .hero-section {
                padding: 120px 0 60px;
            }
            .hero-title {
                font-size: 2rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .section-header h2 {
                font-size: 1.8rem;
            }
            .code-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .footer-content {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
            .cta-section {
                padding: var(--spacing-lg);
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 12px;
            }
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .btn-primary, .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .logo-text strong {
                font-size: 0.7rem;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 1rem;
            }
            .btn-login {
                display: none;
            }
            .btn-signup {
                padding: 6px 12px;
                font-size: 0.75rem;
            }
            .countdown-row {
                gap: 6px;
            }
            .countdown-item .number {
                font-size: 1.2rem;
            }
            .fab {
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
                left: 12px;
                bottom: 80px;
            }
        }