/* roulang page: index */
:root {
            --bg-primary: #0B1A30;
            --bg-secondary: #0F0C20;
            --bg-card: rgba(15, 22, 45, 0.85);
            --bg-glass: rgba(11, 26, 48, 0.72);
            --accent-cyan: #00F0FF;
            --accent-lime: #CCFF00;
            --accent-pink: #FF007F;
            --text-primary: #FFFFFF;
            --text-secondary: #A6ACAF;
            --text-muted: #6B7280;
            --border-glow: rgba(0, 240, 255, 0.35);
            --border-subtle: rgba(166, 172, 175, 0.18);
            --shadow-neon: 0 0 20px rgba(0, 240, 255, 0.25);
            --shadow-lime: 0 0 16px rgba(204, 255, 0, 0.22);
            --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.45);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --spacing-xs: 0.5rem;
            --spacing-sm: 0.875rem;
            --spacing-md: 1.25rem;
            --spacing-lg: 2rem;
            --spacing-xl: 3rem;
            --spacing-2xl: 4.5rem;
            --font-primary: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --font-display: 'Poppins', 'Inter', 'Segoe UI', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-primary);
            background: linear-gradient(165deg, var(--bg-secondary) 0%, var(--bg-primary) 45%, #071425 100%);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
            position: relative;
        }

        body::before {
            content: '';
            position: fixed;
            inset: 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: 44px 44px;
            pointer-events: none;
            z-index: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }

        a:hover,
        a:focus-visible {
            color: var(--accent-cyan);
            outline: none;
        }

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        .container {
            width: min(1200px, 92%);
            margin-inline: auto;
            position: relative;
            z-index: 1;
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(15, 12, 32, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            background: rgba(11, 26, 48, 0.96);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
            gap: var(--spacing-md);
        }

        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--text-primary);
            line-height: 1.2;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--bg-primary);
            flex-shrink: 0;
            box-shadow: var(--shadow-neon);
        }

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

        .logo-text .brand-main {
            font-size: 0.95rem;
            font-weight: 700;
            letter-spacing: 0.02em;
        }

        .logo-text .brand-sub {
            font-size: 0.7rem;
            color: var(--text-secondary);
            font-weight: 400;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 0.35rem;
            list-style: none;
        }

        .nav-menu li a {
            display: inline-flex;
            align-items: center;
            padding: 0.55rem 1rem;
            border-radius: 50px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .nav-menu li a:hover,
        .nav-menu li a:focus-visible {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        .nav-menu li a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.12);
            box-shadow: inset 0 0 0 1px rgba(0, 240, 255, 0.3);
        }

        .nav-auth {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            flex-shrink: 0;
        }

        .btn-login {
            padding: 0.55rem 1.1rem;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            border: none;
            cursor: pointer;
            transition: color 0.25s ease;
        }

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

        .btn-signup {
            padding: 0.6rem 1.5rem;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--bg-primary);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            border: none;
            cursor: pointer;
            box-shadow: var(--shadow-neon);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.45);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--text-primary);
            cursor: pointer;
            padding: 0.5rem;
            border-radius: 8px;
        }

        /* Hero Section - Creator Profile Style */
        .hero-section {
            padding-top: calc(72px + var(--spacing-xl));
            padding-bottom: var(--spacing-2xl);
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            background-attachment: fixed;
            min-height: 100vh;
            display: flex;
            align-items: center;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 26, 48, 0.78) 0%, rgba(15, 12, 32, 0.9) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr;
            gap: var(--spacing-xl);
            max-width: 900px;
            margin-inline: auto;
            text-align: center;
        }

        .hero-profile-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.8rem;
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-glow);
            border-radius: 50px;
            padding: 0.6rem 1.4rem;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--accent-cyan);
            margin-inline: auto;
            box-shadow: var(--shadow-neon);
            animation: floatY 3s ease-in-out infinite;
        }

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

        .hero-profile-badge i {
            font-size: 1.1rem;
        }

        .hero-title {
            font-family: var(--font-display);
            font-size: clamp(2rem, 5vw, 3.6rem);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: var(--spacing-md);
            background: linear-gradient(135deg, #FFFFFF 30%, var(--accent-cyan) 70%, var(--accent-lime) 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 0 40px rgba(0, 240, 255, 0.3);
        }

        .hero-desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 720px;
            margin-inline: auto;
            margin-bottom: var(--spacing-lg);
            line-height: 1.7;
        }

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

        .btn-primary-glow {
            padding: 0.9rem 2rem;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 700;
            color: var(--bg-primary);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            border: none;
            cursor: pointer;
            box-shadow: var(--shadow-neon);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
        }

        .btn-primary-glow:hover {
            transform: translateY(-3px);
            box-shadow: 0 0 36px rgba(0, 240, 255, 0.55);
        }

        .btn-secondary-outline {
            padding: 0.9rem 1.8rem;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            border: 1px solid var(--border-glow);
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
        }

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

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

        .stat-chip {
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 0.9rem 1.4rem;
            text-align: center;
            min-width: 120px;
            transition: all 0.3s ease;
        }

        .stat-chip:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-neon);
            transform: translateY(-3px);
        }

        .stat-number {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--accent-cyan);
            display: block;
        }

        .stat-label {
            font-size: 0.82rem;
            color: var(--text-secondary);
        }

        /* Section General */
        .section {
            padding: var(--spacing-2xl) 0;
            position: relative;
        }

        .section-alt {
            background: rgba(15, 12, 32, 0.5);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .section-heading {
            font-family: var(--font-display);
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            line-height: 1.25;
            letter-spacing: -0.01em;
        }

        .section-sub {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 700px;
            margin-bottom: var(--spacing-lg);
            line-height: 1.7;
        }

        /* Feature / Value Points */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: var(--spacing-md);
            margin-top: var(--spacing-lg);
        }

        .feature-card {
            background: var(--bg-card);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            transition: all 0.35s ease;
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-lime));
            opacity: 0;
            transition: opacity 0.35s ease;
        }

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

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

        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(0, 240, 255, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-cyan);
            margin-bottom: var(--spacing-sm);
            border: 1px solid rgba(0, 240, 255, 0.25);
        }

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

        .feature-card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* Version Cards / Game Versions */
        .version-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: var(--spacing-md);
        }

        .version-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all 0.35s ease;
        }

        .version-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card), 0 0 24px rgba(0, 240, 255, 0.2);
            transform: translateY(-4px);
        }

        .version-card-img {
            width: 100%;
            height: 190px;
            object-fit: cover;
            border-bottom: 1px solid var(--border-subtle);
        }

        .version-card-body {
            padding: var(--spacing-md);
        }

        .version-card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: var(--spacing-xs);
        }

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

        .badge-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.3rem 0.8rem;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            background: rgba(204, 255, 0, 0.12);
            color: var(--accent-lime);
            border: 1px solid rgba(204, 255, 0, 0.3);
        }

        /* Info / CMS List Section */
        .info-layout {
            display: grid;
            grid-template-columns: 1.7fr 1fr;
            gap: var(--spacing-lg);
            margin-top: var(--spacing-lg);
        }

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

        .info-item {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: var(--spacing-sm) var(--spacing-md);
            transition: all 0.3s ease;
        }

        .info-item:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card);
            transform: translateX(4px);
        }

        .info-item-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(0, 240, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--accent-cyan);
            flex-shrink: 0;
        }

        .info-item-content {
            flex: 1;
            min-width: 0;
        }

        .info-item-content h4 {
            font-size: 0.98rem;
            font-weight: 600;
            margin-bottom: 0.2rem;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .info-item-content p {
            font-size: 0.85rem;
            color: var(--text-muted);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .info-recommend {
            background: var(--bg-card);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-neon);
        }

        .info-recommend h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            color: var(--accent-cyan);
        }

        .recommend-item {
            display: flex;
            gap: var(--spacing-sm);
            padding: var(--spacing-xs) 0;
            border-bottom: 1px solid var(--border-subtle);
        }

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

        .recommend-item img {
            width: 56px;
            height: 56px;
            border-radius: 10px;
            object-fit: cover;
            flex-shrink: 0;
        }

        .recommend-item h5 {
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 0.2rem;
        }

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

        /* Testimonials / Review Bubbles */
        .review-bubbles {
            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-subtle);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            position: relative;
            transition: all 0.3s ease;
        }

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

        .review-bubble::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 28px;
            width: 16px;
            height: 16px;
            background: var(--bg-card);
            border-right: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            transform: rotate(45deg);
        }

        .review-text {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: var(--spacing-sm);
            font-style: italic;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 0.7rem;
        }

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

        .review-author-info h5 {
            font-size: 0.9rem;
            font-weight: 600;
        }

        .review-author-info span {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        /* Trust Badge Bar */
        .trust-bar {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: var(--spacing-sm);
            margin-top: var(--spacing-lg);
        }

        .trust-item {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            background: var(--bg-glass);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: var(--spacing-sm) var(--spacing-md);
            transition: all 0.3s ease;
        }

        .trust-item:hover {
            border-color: var(--accent-lime);
            box-shadow: var(--shadow-lime);
        }

        .trust-item i {
            font-size: 1.3rem;
            color: var(--accent-lime);
        }

        .trust-item span {
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-secondary);
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin-inline: auto;
            margin-top: var(--spacing-lg);
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: var(--spacing-sm);
            overflow: hidden;
            transition: all 0.3s ease;
        }

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

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

        .faq-question i {
            color: var(--accent-cyan);
            transition: transform 0.3s ease;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 var(--spacing-md);
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.65;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 var(--spacing-md) var(--spacing-md);
        }

        /* CTA Section */
        .cta-section {
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: var(--spacing-2xl) 0;
            text-align: center;
            position: relative;
            border-radius: var(--radius-xl);
            margin: var(--spacing-2xl) auto;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(11, 26, 48, 0.82);
            z-index: 1;
        }

        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 650px;
            margin-inline: auto;
            padding: var(--spacing-xl);
        }

        .cta-content h2 {
            font-size: clamp(1.6rem, 3vw, 2.3rem);
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
        }

        .cta-content p {
            color: var(--text-secondary);
            font-size: 1rem;
            margin-bottom: var(--spacing-lg);
        }

        /* Footer */
        .site-footer {
            background: rgba(15, 12, 32, 0.9);
            border-top: 1px solid var(--border-subtle);
            padding: var(--spacing-xl) 0 var(--spacing-lg);
            margin-top: var(--spacing-2xl);
            position: relative;
            z-index: 1;
        }

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

        .footer-brand .logo-link {
            margin-bottom: var(--spacing-sm);
        }

        .footer-brand p {
            font-size: 0.88rem;
            color: var(--text-muted);
            max-width: 300px;
            line-height: 1.6;
        }

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

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

        .footer-col ul li {
            margin-bottom: 0.5rem;
        }

        .footer-col ul li a {
            font-size: 0.88rem;
            color: var(--text-secondary);
            transition: color 0.25s ease;
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: var(--spacing-md);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: var(--spacing-sm);
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-secondary);
        }

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

        /* FAB - Cyber Neon Style */
        .fab-neon {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 999;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(11, 26, 48, 0.75);
            backdrop-filter: blur(10px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(11, 26, 48, 0.75), rgba(11, 26, 48, 0.75)), linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            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);
            cursor: pointer;
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.4);
            transition: all 0.3s ease;
            animation: fabBreath 3s ease-in-out infinite;
        }

        @keyframes fabBreath {
            0%, 100% { opacity: 0.7; box-shadow: 0 0 12px rgba(0, 240, 255, 0.3); }
            50% { opacity: 1; box-shadow: 0 0 26px rgba(0, 240, 255, 0.6); }
        }

        .fab-neon:hover {
            transform: scale(1.1);
            opacity: 1;
            box-shadow: 0 0 34px rgba(0, 240, 255, 0.7);
        }

        .fab-neon .fab-notif {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 16px;
            height: 16px;
            background: var(--accent-pink);
            border-radius: 50%;
            border: 2px solid var(--bg-primary);
            animation: blinkNeon 1.4s ease-in-out infinite;
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .info-layout {
                grid-template-columns: 1fr;
            }
            .hero-section {
                background-attachment: scroll;
                min-height: auto;
                padding-top: calc(72px + var(--spacing-lg));
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
                min-height: 60px;
                padding: 0.5rem 0;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                align-items: stretch;
                width: 100%;
                background: rgba(15, 12, 32, 0.98);
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                padding: var(--spacing-sm);
                border: 1px solid var(--border-subtle);
                border-top: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu li a {
                padding: 0.7rem 1rem;
                border-radius: 8px;
            }
            .nav-auth {
                margin-left: auto;
            }
            .mobile-toggle {
                display: block;
            }
            .hero-title {
                font-size: clamp(1.8rem, 6vw, 2.5rem);
            }
            .hero-desc {
                font-size: 1rem;
            }
            .hero-stats {
                gap: var(--spacing-sm);
            }
            .stat-chip {
                min-width: 90px;
                padding: 0.7rem 1rem;
            }
            .section {
                padding: var(--spacing-xl) 0;
            }
            .feature-grid,
            .version-grid,
            .review-bubbles,
            .trust-bar {
                grid-template-columns: 1fr;
            }
            .cta-section {
                border-radius: var(--radius-lg);
                margin: var(--spacing-xl) auto;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                width: 94%;
            }
            .logo-text .brand-main {
                font-size: 0.8rem;
            }
            .logo-text .brand-sub {
                font-size: 0.62rem;
            }
            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }
            .btn-login {
                padding: 0.45rem 0.8rem;
                font-size: 0.82rem;
            }
            .btn-signup {
                padding: 0.5rem 1.1rem;
                font-size: 0.82rem;
            }
            .hero-profile-badge {
                font-size: 0.75rem;
                padding: 0.5rem 1rem;
            }
            .hero-cta-group {
                flex-direction: column;
                align-items: center;
            }
            .btn-primary-glow,
            .btn-secondary-outline {
                width: 100%;
                justify-content: center;
            }
            .fab-neon {
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
                left: 0.75rem;
                bottom: 5rem;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.85);
            --bg-glass: rgba(255, 255, 255, 0.05);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-purple: #6C5CE7;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #8B95A9;
            --border-color: rgba(0, 240, 255, 0.2);
            --border-hover: rgba(0, 240, 255, 0.6);
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.15);
            --shadow-hover: 0 0 35px rgba(0, 240, 255, 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;
            --spacing-xxl: 96px;
            --font-main: 'Segoe UI', 'Roboto', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            --transition-fast: 0.2s ease;
            --transition-medium: 0.35s ease;
            --transition-slow: 0.5s ease;
        }
        
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        html {
            scroll-behavior: smooth;
        }
        
        body {
            font-family: var(--font-main);
            background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        
        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        
        a:hover {
            color: #FFFFFF;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }
        
        /* Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            transition: all var(--transition-medium);
        }
        
        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.98);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            padding: 0 var(--spacing-md);
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .logo-link {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
        }
        
        .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #FFFFFF;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
        }
        
        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }
        
        .brand-main {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.5px;
        }
        
        .brand-sub {
            font-size: 11px;
            color: var(--accent-cyan);
            font-weight: 500;
            letter-spacing: 1px;
            text-transform: uppercase;
        }
        
        .nav-menu {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            list-style: none;
            margin: 0;
            padding: 0;
        }
        
        .nav-menu li {
            margin: 0;
        }
        
        .nav-menu a {
            display: block;
            padding: 8px 16px;
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            position: relative;
        }
        
        .nav-menu a:hover,
        .nav-menu a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }
        
        .nav-menu a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 16px;
            right: 16px;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 2px;
        }
        
        .nav-auth {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .btn-login {
            padding: 8px 18px;
            background: transparent;
            color: var(--text-primary);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-sm);
            font-size: 13px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            display: inline-block;
        }
        
        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.05);
        }
        
        .btn-signup {
            padding: 8px 20px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #FFFFFF;
            border: none;
            border-radius: var(--radius-sm);
            font-size: 13px;
            font-weight: 700;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            display: inline-block;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.25);
        }
        
        .btn-signup:hover {
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.5);
            transform: translateY(-2px);
            color: #FFFFFF;
        }
        
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 24px;
            cursor: pointer;
            padding: 8px;
        }
        
        /* Article Content */
        .article-page {
            padding-top: 72px;
            min-height: 100vh;
        }
        
        .article-hero {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.15) 0%, rgba(0, 240, 255, 0.08) 50%, rgba(108, 92, 231, 0.12) 100%);
            border-bottom: 1px solid var(--border-color);
            padding: var(--spacing-xl) 0 var(--spacing-lg);
            position: relative;
            overflow: hidden;
        }
        
        .article-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        
        .article-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -5%;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(0, 82, 255, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        
        .article-hero-content {
            position: relative;
            z-index: 1;
            max-width: 720px;
        }
        
        .article-category-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(0, 240, 255, 0.12);
            color: var(--accent-cyan);
            border: 1px solid var(--border-color);
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: var(--spacing-sm);
        }
        
        .article-hero h1 {
            font-size: clamp(28px, 5vw, 44px);
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: var(--spacing-sm);
            color: var(--text-primary);
            letter-spacing: -0.5px;
        }
        
        .article-meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
            color: var(--text-muted);
            font-size: 13px;
        }
        
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        
        .article-meta i {
            color: var(--accent-cyan);
        }
        
        .article-body-wrapper {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 300px;
            gap: var(--spacing-lg);
            padding: var(--spacing-lg) 0 var(--spacing-xl);
        }
        
        .article-main {
            min-width: 0;
        }
        
        .article-content {
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-secondary);
            max-width: 720px;
        }
        
        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-primary);
            margin: var(--spacing-lg) 0 var(--spacing-sm);
            line-height: 1.3;
        }
        
        .article-content h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-primary);
            margin: var(--spacing-md) 0 var(--spacing-xs);
            line-height: 1.35;
        }
        
        .article-content p {
            margin-bottom: var(--spacing-sm);
        }
        
        .article-content ul,
        .article-content ol {
            margin: var(--spacing-sm) 0;
            padding-left: var(--spacing-lg);
            color: var(--text-secondary);
        }
        
        .article-content li {
            margin-bottom: 8px;
        }
        
        .article-content img {
            border-radius: var(--radius-md);
            margin: var(--spacing-md) 0;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
        }
        
        .article-content blockquote {
            border-left: 4px solid var(--accent-cyan);
            padding: var(--spacing-sm) var(--spacing-md);
            background: rgba(0, 240, 255, 0.05);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: var(--spacing-md) 0;
            color: var(--text-primary);
            font-style: italic;
        }
        
        .article-content a {
            color: var(--accent-cyan);
            border-bottom: 1px solid rgba(0, 240, 255, 0.3);
            transition: all var(--transition-fast);
        }
        
        .article-content a:hover {
            border-bottom-color: var(--accent-cyan);
            color: #FFFFFF;
        }
        
        .article-not-found {
            text-align: center;
            padding: var(--spacing-xl) 0;
        }
        
        .article-not-found i {
            font-size: 64px;
            color: var(--text-muted);
            margin-bottom: var(--spacing-md);
        }
        
        .article-not-found h2 {
            font-size: 28px;
            margin-bottom: var(--spacing-sm);
        }
        
        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: var(--spacing-lg);
        }
        
        .btn-back-home {
            display: inline-block;
            padding: 12px 28px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #FFFFFF;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 14px;
            text-decoration: none;
            transition: all var(--transition-fast);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.25);
        }
        
        .btn-back-home:hover {
            box-shadow: 0 0 35px rgba(0, 240, 255, 0.5);
            transform: translateY(-2px);
            color: #FFFFFF;
        }
        
        /* Sidebar */
        .article-sidebar {
            position: sticky;
            top: 96px;
            align-self: start;
        }
        
        .sidebar-card {
            background: var(--bg-glass);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            margin-bottom: var(--spacing-md);
        }
        
        .sidebar-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: var(--spacing-sm);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .sidebar-card h4 i {
            color: var(--accent-cyan);
        }
        
        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .sidebar-card ul li {
            margin-bottom: 8px;
        }
        
        .sidebar-card ul li a {
            display: block;
            padding: 10px 12px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-size: 13px;
            font-weight: 500;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }
        
        .sidebar-card ul li a:hover {
            background: rgba(0, 240, 255, 0.08);
            border-color: var(--border-color);
            color: var(--accent-cyan);
        }
        
        /* CTA Section */
        .article-cta {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.15) 0%, rgba(0, 240, 255, 0.1) 50%, rgba(108, 92, 231, 0.15) 100%);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            margin: var(--spacing-lg) 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .article-cta::before {
            content: '';
            position: absolute;
            top: -50%;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        
        .article-cta h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: var(--spacing-xs);
            position: relative;
            z-index: 1;
        }
        
        .article-cta p {
            color: var(--text-secondary);
            margin-bottom: var(--spacing-md);
            position: relative;
            z-index: 1;
        }
        
        .btn-cta {
            display: inline-block;
            padding: 14px 32px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #FFFFFF;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 15px;
            text-decoration: none;
            transition: all var(--transition-fast);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.3);
            position: relative;
            z-index: 1;
        }
        
        .btn-cta:hover {
            box-shadow: 0 0 45px rgba(0, 240, 255, 0.55);
            transform: translateY(-3px);
            color: #FFFFFF;
        }
        
        /* FAB */
        .fab-support {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 999;
            width: 56px;
            height: 56px;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all var(--transition-medium);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
            position: relative;
            opacity: 0.6;
        }
        
        .fab-support::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            z-index: -1;
            opacity: 0.7;
            transition: all var(--transition-medium);
        }
        
        .fab-support:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 35px rgba(0, 240, 255, 0.6);
        }
        
        .fab-support:active {
            transform: scale(0.95);
        }
        
        .fab-support i {
            font-size: 24px;
            color: var(--accent-cyan);
            transition: all var(--transition-medium);
        }
        
        .fab-support:hover i {
            animation: neonFlicker 0.5s ease;
        }
        
        .fab-notification {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: #FF007F;
            border-radius: 50%;
            border: 2px solid var(--bg-primary);
            animation: blinkNeon 1.5s ease-in-out infinite;
        }
        
        @keyframes neonFlicker {
            0%, 100% { opacity: 1; }
            25% { opacity: 0.5; }
            50% { opacity: 0.8; }
            75% { opacity: 0.3; }
        }
        
        @keyframes blinkNeon {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        
        /* Footer */
        .site-footer {
            background: rgba(8, 9, 15, 0.95);
            border-top: 1px solid var(--border-color);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: var(--spacing-xl);
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }
        
        .footer-brand p {
            color: var(--text-muted);
            font-size: 14px;
            margin-top: var(--spacing-sm);
            line-height: 1.6;
        }
        
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: var(--spacing-sm);
        }
        
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .footer-col ul li {
            margin-bottom: 8px;
        }
        
        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 13px;
            transition: all var(--transition-fast);
            text-decoration: none;
        }
        
        .footer-col ul li a:hover {
            color: var(--accent-cyan);
        }
        
        .footer-col ul li a i {
            margin-right: 6px;
            color: var(--accent-cyan);
        }
        
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: var(--spacing-md);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            color: var(--text-muted);
            font-size: 12px;
        }
        
        /* Responsive */
        @media (max-width: 1024px) {
            .article-body-wrapper {
                grid-template-columns: minmax(0, 1fr) 260px;
                gap: var(--spacing-md);
            }
            
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }
        }
        
        @media (max-width: 768px) {
            .nav-container {
                height: 60px;
                padding: 0 var(--spacing-sm);
            }
            
            .article-page {
                padding-top: 60px;
            }
            
            .nav-toggle {
                display: block;
            }
            
            .nav-menu {
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: var(--spacing-md);
                gap: var(--spacing-xs);
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-110%);
                transition: transform var(--transition-medium);
                z-index: 999;
            }
            
            .nav-menu.open {
                transform: translateY(0);
            }
            
            .nav-menu li {
                width: 100%;
            }
            
            .nav-menu a {
                padding: 12px 16px;
                text-align: left;
            }
            
            .nav-auth {
                gap: 6px;
            }
            
            .btn-login,
            .btn-signup {
                padding: 6px 12px;
                font-size: 12px;
            }
            
            .article-hero {
                padding: var(--spacing-lg) 0 var(--spacing-md);
            }
            
            .article-body-wrapper {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            
            .article-sidebar {
                position: static;
            }
            
            .article-content {
                font-size: 15px;
            }
            
            .article-cta {
                padding: var(--spacing-md);
            }
            
            .fab-support {
                left: 12px;
                bottom: 80px;
                width: 48px;
                height: 48px;
            }
            
            .fab-support i {
                font-size: 20px;
            }
            
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        
        @media (max-width: 520px) {
            .nav-container {
                height: 56px;
                padding: 0 12px;
            }
            
            .article-page {
                padding-top: 56px;
            }
            
            .nav-menu {
                top: 56px;
            }
            
            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 16px;
            }
            
            .brand-main {
                font-size: 14px;
            }
            
            .brand-sub {
                font-size: 10px;
            }
            
            .btn-login,
            .btn-signup {
                padding: 5px 10px;
                font-size: 11px;
            }
            
            .article-hero h1 {
                font-size: 24px;
            }
            
            .article-content h2 {
                font-size: 20px;
            }
            
            .article-content h3 {
                font-size: 18px;
            }
            
            .article-cta h3 {
                font-size: 20px;
            }
            
            .btn-cta {
                padding: 12px 24px;
                font-size: 13px;
            }
            
            .fab-support {
                left: 8px;
                bottom: 72px;
                width: 44px;
                height: 44px;
            }
            
            .fab-support i {
                font-size: 18px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-deep: #08090F;
            --bg-navy: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.85);
            --bg-glass: rgba(13, 17, 30, 0.6);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #94A3B8;
            --border-glow: rgba(0, 240, 255, 0.25);
            --border-subtle: rgba(203, 213, 225, 0.12);
            --shadow-neon: 0 0 20px rgba(0, 240, 255, 0.25);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --space-xs: 8px;
            --space-sm: 16px;
            --space-md: 24px;
            --space-lg: 40px;
            --space-xl: 64px;
            --space-2xl: 96px;
            --font-base: 16px;
            --font-small: 14px;
            --font-tiny: 12px;
            --font-h1: clamp(2rem, 5vw, 3.5rem);
            --font-h2: clamp(1.5rem, 3.5vw, 2.25rem);
            --font-h3: clamp(1.15rem, 2.5vw, 1.5rem);
            --transition-fast: 0.2s ease;
            --transition-med: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: 'Segoe UI', 'Roboto', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            background-color: var(--bg-deep);
            color: var(--text-silver);
            line-height: 1.6;
            font-size: var(--font-base);
            overflow-x: hidden;
            position: relative;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle at 20% 20%, rgba(0, 82, 255, 0.08), transparent 50%),
                        radial-gradient(circle at 80% 60%, rgba(0, 240, 255, 0.05), transparent 50%),
                        radial-gradient(circle at 50% 90%, rgba(0, 82, 255, 0.06), transparent 40%);
            pointer-events: none;
            z-index: 0;
        }

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

        a:hover {
            color: var(--text-white);
            text-decoration: none;
        }

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

        button, .button {
            cursor: pointer;
            font-family: inherit;
            transition: all var(--transition-med);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--space-sm);
            position: relative;
            z-index: 1;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(8, 9, 15, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            padding: var(--space-sm) 0;
        }

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

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-white);
            text-decoration: none;
            transition: opacity var(--transition-fast);
        }

        .logo-link:hover {
            opacity: 0.85;
            color: var(--text-white);
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-white);
            font-size: 20px;
            flex-shrink: 0;
        }

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

        .brand-main {
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-white);
            letter-spacing: -0.02em;
        }

        .brand-sub {
            font-size: var(--font-tiny);
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 0.08em;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: var(--space-xs);
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }

        .nav-menu li a {
            display: block;
            padding: 8px 14px;
            color: var(--text-silver);
            font-size: var(--font-small);
            font-weight: 500;
            border-radius: 20px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

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

        .nav-menu li a.active {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid rgba(0, 240, 255, 0.2);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: var(--space-xs);
        }

        .btn-login {
            background: transparent;
            border: none;
            color: var(--text-silver);
            font-size: var(--font-small);
            font-weight: 600;
            padding: 8px 14px;
            border-radius: 20px;
            transition: all var(--transition-fast);
        }

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

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: var(--text-white);
            font-size: var(--font-small);
            font-weight: 700;
            padding: 8px 18px;
            border-radius: 20px;
            border: none;
            box-shadow: 0 2px 12px rgba(0, 240, 255, 0.3);
            transition: all var(--transition-med);
            white-space: nowrap;
        }

        .btn-signup:hover {
            box-shadow: 0 4px 20px rgba(0, 240, 255, 0.5);
            transform: translateY(-1px);
            color: var(--text-white);
        }

        /* Mobile Nav */
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 24px;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        /* Hero */
        .hero-section {
            padding: var(--space-2xl) 0 var(--space-xl);
            position: relative;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            border-bottom: 1px solid var(--border-subtle);
        }

        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 9, 15, 0.85) 0%, rgba(13, 17, 30, 0.92) 60%, rgba(8, 9, 15, 0.98) 100%);
            z-index: 0;
        }

        .hero-section .container {
            position: relative;
            z-index: 1;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: var(--space-xl);
            align-items: center;
        }

        .hero-content {
            max-width: 600px;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(0, 240, 255, 0.12);
            color: var(--accent-cyan);
            font-size: var(--font-tiny);
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            margin-bottom: var(--space-sm);
            border: 1px solid rgba(0, 240, 255, 0.25);
        }

        .hero-content h1 {
            font-size: var(--font-h1);
            color: var(--text-white);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.03em;
            margin-bottom: var(--space-sm);
        }

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

        .hero-content .hero-desc {
            font-size: 1.05rem;
            color: var(--text-silver);
            line-height: 1.65;
            margin-bottom: var(--space-md);
            max-width: 520px;
        }

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

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: var(--text-white);
            font-size: 0.95rem;
            font-weight: 700;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            border: none;
            box-shadow: 0 4px 20px rgba(0, 240, 255, 0.3);
            transition: all var(--transition-med);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary:hover {
            box-shadow: 0 6px 28px rgba(0, 240, 255, 0.5);
            transform: translateY(-2px);
            color: var(--text-white);
        }

        .btn-secondary {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-silver);
            font-size: 0.95rem;
            font-weight: 600;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-med);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            backdrop-filter: blur(10px);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            color: var(--text-white);
            border-color: rgba(0, 240, 255, 0.3);
        }

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

        .hero-stat {
            display: flex;
            flex-direction: column;
        }

        .hero-stat .stat-num {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1.2;
        }

        .hero-stat .stat-label {
            font-size: var(--font-tiny);
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .hero-panel {
            background: var(--bg-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: var(--space-lg);
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }

        .hero-panel::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.06), transparent 60%);
            pointer-events: none;
        }

        .hero-panel img {
            border-radius: var(--radius-md);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
            position: relative;
            z-index: 1;
        }

        .panel-label {
            font-size: var(--font-tiny);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-cyan);
            font-weight: 600;
            margin-bottom: var(--space-xs);
            position: relative;
            z-index: 1;
        }

        .panel-title {
            font-size: var(--font-h3);
            color: var(--text-white);
            font-weight: 700;
            margin-bottom: var(--space-sm);
            position: relative;
            z-index: 1;
        }

        .panel-list {
            list-style: none;
            margin: 0 0 var(--space-sm);
            padding: 0;
            position: relative;
            z-index: 1;
        }

        .panel-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text-silver);
            font-size: var(--font-small);
            padding: 6px 0;
            line-height: 1.5;
        }

        .panel-list li i {
            color: var(--accent-cyan);
            margin-top: 4px;
            flex-shrink: 0;
            font-size: var(--font-tiny);
        }

        /* Sections */
        .section {
            padding: var(--space-xl) 0;
            position: relative;
            z-index: 1;
        }

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

        .section-header h2 {
            font-size: var(--font-h2);
            color: var(--text-white);
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: var(--space-xs);
        }

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

        /* Stats Dashboard */
        .stats-dashboard {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-sm);
            margin-bottom: var(--space-lg);
        }

        .stat-card {
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            text-align: left;
            transition: all var(--transition-med);
            position: relative;
            overflow: hidden;
        }

        .stat-card:hover {
            border-color: rgba(0, 240, 255, 0.3);
            box-shadow: 0 4px 16px rgba(0, 240, 255, 0.1);
            transform: translateY(-2px);
        }

        .stat-card .stat-icon {
            width: 36px;
            height: 36px;
            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: 16px;
            margin-bottom: var(--space-xs);
        }

        .stat-card .stat-value {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
        }

        .stat-card .stat-desc {
            font-size: var(--font-tiny);
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.04em;
            margin-top: 4px;
        }

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

        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            transition: all var(--transition-med);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            min-height: 200px;
        }

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

        .service-card .service-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.15), rgba(0, 240, 255, 0.15));
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 20px;
            margin-bottom: var(--space-sm);
        }

        .service-card h3 {
            font-size: var(--font-h3);
            color: var(--text-white);
            font-weight: 700;
            margin-bottom: var(--space-xs);
            letter-spacing: -0.01em;
        }

        .service-card p {
            font-size: var(--font-small);
            color: var(--text-silver);
            line-height: 1.6;
            flex-grow: 1;
        }

        /* Comparison */
        .comparison-section {
            background: var(--bg-navy);
            border-radius: var(--radius-lg);
            padding: var(--space-lg);
            border: 1px solid var(--border-subtle);
            position: relative;
            overflow: hidden;
        }

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

        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-lg);
            margin-top: var(--space-md);
        }

        .comparison-col {
            padding: var(--space-md);
            background: rgba(255, 255, 255, 0.03);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-subtle);
        }

        .comparison-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: var(--space-sm);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .comparison-col h4 i {
            color: var(--accent-cyan);
        }

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

        .comparison-col ul li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text-silver);
            font-size: var(--font-small);
            padding: 6px 0;
            line-height: 1.5;
        }

        .comparison-col ul li i {
            color: var(--accent-cyan);
            margin-top: 4px;
            font-size: var(--font-tiny);
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.15), rgba(0, 240, 255, 0.08));
            border-radius: var(--radius-lg);
            padding: var(--space-xl) var(--space-lg);
            border: 1px solid rgba(0, 240, 255, 0.2);
            position: relative;
            overflow: hidden;
            text-align: left;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            top: -60%;
            right: -30%;
            width: 60%;
            height: 200%;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.08), transparent 70%);
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: var(--font-h2);
            color: var(--text-white);
            font-weight: 700;
            margin-bottom: var(--space-xs);
            letter-spacing: -0.02em;
        }

        .cta-section p {
            color: var(--text-silver);
            font-size: 1rem;
            margin-bottom: var(--space-md);
            max-width: 600px;
            line-height: 1.65;
        }

        .cta-actions {
            display: flex;
            gap: var(--space-xs);
            flex-wrap: wrap;
        }

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

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            margin-bottom: var(--space-xs);
            transition: all var(--transition-fast);
            overflow: hidden;
        }

        .faq-item:hover {
            border-color: rgba(0, 240, 255, 0.25);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: var(--space-md);
            text-align: left;
            color: var(--text-white);
            font-size: 0.95rem;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: var(--space-sm);
            cursor: pointer;
            transition: color var(--transition-fast);
        }

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

        .faq-question i {
            transition: transform var(--transition-med);
            color: var(--accent-cyan);
            font-size: var(--font-small);
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-med), padding var(--transition-med);
            padding: 0 var(--space-md);
            color: var(--text-silver);
            font-size: var(--font-small);
            line-height: 1.65;
        }

        .faq-item.active .faq-answer {
            max-height: 500px;
            padding: 0 var(--space-md) var(--space-md);
        }

        /* FAB */
        .fab-float {
            position: fixed;
            left: 16px;
            bottom: 24px;
            z-index: 50;
            width: 56px;
            height: 56px;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(8, 9, 15, 0.85), rgba(8, 9, 15, 0.85)), linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            background-origin: border-box;
            background-clip: padding-box, border-box;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 22px;
            cursor: pointer;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            transition: all var(--transition-med);
            opacity: 0.65;
        }

        .fab-float:hover {
            opacity: 1;
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.7);
            transform: scale(1.1);
            color: var(--text-white);
        }

        .fab-float:active {
            transform: scale(0.95);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.5);
            border-color: var(--accent-cyan);
        }

        .fab-notification {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 12px;
            height: 12px;
            background: #FF007F;
            border-radius: 50%;
            border: 2px solid var(--bg-deep);
            animation: blink-notification 1.5s ease-in-out infinite;
        }

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

        /* Footer */
        .site-footer {
            background: var(--bg-navy);
            border-top: 1px solid var(--border-subtle);
            padding: var(--space-xl) 0 var(--space-md);
            position: relative;
            z-index: 1;
            margin-top: var(--space-xl);
        }

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

        .footer-brand p {
            font-size: var(--font-small);
            color: var(--text-muted);
            line-height: 1.65;
            margin-top: var(--space-sm);
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-white);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: var(--space-sm);
        }

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

        .footer-col ul li {
            margin-bottom: 6px;
        }

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

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

        .footer-col ul li a i {
            margin-right: 6px;
            color: var(--accent-cyan);
            width: 16px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: var(--space-md);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--space-xs);
            font-size: var(--font-tiny);
            color: var(--text-muted);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: var(--space-lg);
            }
            .stats-dashboard {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .comparison-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.98);
                backdrop-filter: blur(20px);
                border-bottom: 1px solid var(--border-subtle);
                padding: var(--space-sm);
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                z-index: 99;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu li a {
                padding: 12px 16px;
                font-size: 0.95rem;
                border-radius: var(--radius-sm);
            }
            .header-actions {
                gap: 6px;
            }
            .btn-login, .btn-signup {
                font-size: var(--font-tiny);
                padding: 6px 12px;
            }
            .section {
                padding: var(--space-lg) 0;
            }
            .hero-section {
                padding: var(--space-xl) 0 var(--space-lg);
            }
            .stats-dashboard {
                grid-template-columns: 1fr;
            }
            .service-grid {
                grid-template-columns: 1fr;
            }
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .hero-stats {
                gap: var(--space-sm);
            }
            .cta-section {
                padding: var(--space-lg);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--space-xs);
            }
            .fab-float {
                width: 48px;
                height: 48px;
                font-size: 18px;
                left: 12px;
                bottom: 20px;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                gap: var(--space-xs);
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 16px;
            }
            .brand-main {
                font-size: 0.85rem;
            }
            .brand-sub {
                font-size: 10px;
            }
            .btn-login {
                padding: 6px 10px;
                font-size: 11px;
            }
            .btn-signup {
                padding: 6px 10px;
                font-size: 11px;
            }
            .hero-content h1 {
                font-size: 1.5rem;
            }
            .hero-content .hero-desc {
                font-size: 0.9rem;
            }
            .btn-primary, .btn-secondary {
                padding: 10px 16px;
                font-size: 0.85rem;
                width: 100%;
                justify-content: center;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .section-header h2 {
                font-size: 1.3rem;
            }
            .stat-card .stat-value {
                font-size: 1.3rem;
            }
            .comparison-col {
                padding: var(--space-sm);
            }
        }

/* roulang page: category2 */
:root {
            --primary-bg: #0B1A30;
            --secondary-bg: #0F0C20;
            --accent-cyan: #00F0FF;
            --accent-lime: #CCFF00;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --text-glow: rgba(0, 240, 255, 0.5);
            --border-neon: #00F0FF;
            --card-bg: rgba(11, 26, 48, 0.85);
            --card-hover: rgba(15, 12, 32, 0.95);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.4);
            --shadow-hover: 0 0 25px rgba(204, 255, 0, 0.5);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 32px;
            --spacing-lg: 64px;
            --spacing-xl: 96px;
            --font-main: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }

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

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

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 20% 20%, rgba(0, 240, 255, 0.08) 0%, transparent 60%),
                        radial-gradient(ellipse at 80% 80%, rgba(204, 255, 0, 0.06) 0%, transparent 60%),
                        var(--primary-bg);
            z-index: -2;
        }

        body::after {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            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;
            z-index: -1;
            pointer-events: none;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: all 0.3s ease;
        }

        a:hover {
            color: var(--accent-lime);
            text-shadow: 0 0 8px rgba(204, 255, 0, 0.5);
        }

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

        button, .button {
            cursor: pointer;
            border: none;
            outline: none;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .container {
            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: 1000;
            background: rgba(11, 26, 48, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.2);
            padding: var(--spacing-sm) 0;
        }

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

        .logo-link {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            color: var(--text-white);
            font-weight: 700;
            font-size: 1.1rem;
            letter-spacing: 0.5px;
        }

        .logo-link:hover {
            color: var(--accent-cyan);
            text-shadow: none;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.2), rgba(204, 255, 0, 0.2));
            border: 2px solid var(--accent-cyan);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--accent-cyan);
            box-shadow: var(--shadow-neon);
        }

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

        .brand-main {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
        }

        .brand-sub {
            font-size: 0.75rem;
            color: var(--accent-cyan);
            font-weight: 500;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: var(--spacing-sm);
            align-items: center;
        }

        .nav-menu a {
            display: inline-block;
            padding: 10px 18px;
            color: var(--text-silver);
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: 50px;
            transition: all 0.3s ease;
            position: relative;
        }

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

        .nav-menu a.active {
            color: var(--accent-lime);
            background: rgba(204, 255, 0, 0.1);
            box-shadow: inset 0 0 0 1px rgba(204, 255, 0, 0.3);
        }

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

        .btn-login {
            background: transparent;
            color: var(--text-white);
            padding: 10px 18px;
            font-weight: 600;
            font-size: 0.9rem;
            border-radius: 50px;
            border: 1px solid rgba(0, 240, 255, 0.4);
            transition: all 0.3s ease;
        }

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

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            color: var(--secondary-bg);
            padding: 10px 24px;
            font-weight: 700;
            font-size: 0.9rem;
            border-radius: 50px;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            transition: all 0.3s ease;
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(204, 255, 0, 0.6);
            color: var(--secondary-bg);
        }

        .nav-toggle {
            display: none;
            background: transparent;
            color: var(--text-white);
            font-size: 1.5rem;
            padding: 8px;
            border-radius: var(--radius-sm);
        }

        /* Hero Section */
        .hero-section {
            padding: 140px 0 var(--spacing-lg);
            position: relative;
            background: linear-gradient(180deg, rgba(15, 12, 32, 0.95) 0%, rgba(11, 26, 48, 0.85) 100%);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }

        .hero-content {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
            align-items: center;
        }

        .hero-text h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: var(--spacing-sm);
            color: var(--text-white);
            letter-spacing: -0.5px;
        }

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

        .hero-text .lead {
            font-size: 1.15rem;
            color: var(--text-silver);
            margin-bottom: var(--spacing-md);
            line-height: 1.7;
        }

        .hero-badges {
            display: flex;
            gap: var(--spacing-xs);
            flex-wrap: wrap;
            margin-bottom: var(--spacing-md);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--accent-cyan);
        }

        .badge-gold {
            background: rgba(204, 255, 0, 0.1);
            border-color: rgba(204, 255, 0, 0.3);
            color: var(--accent-lime);
        }

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

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-cyan), #0090ff);
            color: var(--secondary-bg);
            padding: 14px 32px;
            font-weight: 700;
            font-size: 1rem;
            border-radius: 50px;
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.5);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: all 0.3s ease;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.8);
            color: var(--secondary-bg);
        }

        .btn-secondary {
            background: transparent;
            color: var(--text-white);
            padding: 14px 28px;
            font-weight: 600;
            font-size: 1rem;
            border-radius: 50px;
            border: 2px solid rgba(0, 240, 255, 0.5);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: all 0.3s ease;
        }

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

        .hero-coupon {
            background: rgba(11, 26, 48, 0.9);
            backdrop-filter: blur(20px);
            border: 2px solid rgba(0, 240, 255, 0.4);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.2);
            position: relative;
            overflow: hidden;
        }

        .hero-coupon::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle, rgba(204, 255, 0, 0.15) 0%, transparent 70%);
            animation: pulseGlow 3s infinite;
        }

        @keyframes pulseGlow {
            0%, 100% { opacity: 0.5; }
            50% { opacity: 1; }
        }

        .coupon-label {
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--accent-lime);
            font-weight: 700;
            margin-bottom: var(--spacing-xs);
        }

        .coupon-title {
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: var(--spacing-xs);
            color: var(--text-white);
        }

        .coupon-desc {
            color: var(--text-silver);
            margin-bottom: var(--spacing-sm);
            font-size: 0.95rem;
        }

        .coupon-code {
            background: rgba(0, 240, 255, 0.1);
            border: 1px dashed var(--accent-cyan);
            border-radius: var(--radius-sm);
            padding: var(--spacing-sm);
            text-align: center;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent-lime);
            letter-spacing: 3px;
            margin-bottom: var(--spacing-sm);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .coupon-code:hover {
            background: rgba(204, 255, 0, 0.1);
            border-color: var(--accent-lime);
            box-shadow: var(--shadow-hover);
        }

        .coupon-btn {
            width: 100%;
            background: linear-gradient(135deg, var(--accent-lime), #88cc00);
            color: var(--secondary-bg);
            padding: 14px;
            font-weight: 700;
            font-size: 1rem;
            border-radius: 50px;
            box-shadow: 0 0 20px rgba(204, 255, 0, 0.5);
            transition: all 0.3s ease;
        }

        .coupon-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(204, 255, 0, 0.8);
        }

        /* Stats Section */
        .stats-section {
            padding: var(--spacing-lg) 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-sm);
        }

        .stat-card {
            background: rgba(11, 26, 48, 0.7);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            text-align: center;
            transition: all 0.3s ease;
        }

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

        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .stat-label {
            color: var(--text-silver);
            font-size: 0.9rem;
            margin-top: var(--spacing-xs);
        }

        /* Features Section */
        .features-section {
            padding: var(--spacing-lg) 0;
            background: rgba(15, 12, 32, 0.5);
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: var(--spacing-sm);
            color: var(--text-white);
            letter-spacing: -0.5px;
        }

        .section-subtitle {
            color: var(--text-silver);
            font-size: 1.05rem;
            margin-bottom: var(--spacing-lg);
            max-width: 700px;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .feature-item {
            background: rgba(11, 26, 48, 0.8);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            transition: all 0.3s ease;
        }

        .feature-item:hover {
            border-color: rgba(0, 240, 255, 0.5);
            box-shadow: var(--shadow-neon);
            transform: translateY(-5px);
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.15), rgba(204, 255, 0, 0.15));
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--accent-cyan);
            margin-bottom: var(--spacing-sm);
        }

        .feature-item h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: var(--spacing-xs);
            color: var(--text-white);
        }

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

        /* Games Showcase */
        .games-showcase {
            padding: var(--spacing-lg) 0;
        }

        .games-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-sm);
        }

        .game-card {
            background: rgba(11, 26, 48, 0.85);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
        }

        .game-card:hover {
            transform: translateY(-8px) scale(1.02);
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-neon);
        }

        .game-card-image {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-bottom: 2px solid rgba(0, 240, 255, 0.2);
        }

        .game-card-body {
            padding: var(--spacing-sm);
        }

        .game-card-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 1px;
            background: rgba(204, 255, 0, 0.15);
            color: var(--accent-lime);
            border: 1px solid rgba(204, 255, 0, 0.3);
            margin-bottom: var(--spacing-xs);
        }

        .game-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: var(--spacing-xs);
        }

        .game-card .game-meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            color: var(--text-silver);
            font-size: 0.85rem;
        }

        /* Comparison Section */
        .comparison-section {
            padding: var(--spacing-lg) 0;
            background: rgba(15, 12, 32, 0.5);
        }

        .comparison-table-wrapper {
            overflow-x: auto;
            background: rgba(11, 26, 48, 0.8);
            border-radius: var(--radius-md);
            border: 1px solid rgba(0, 240, 255, 0.2);
            padding: var(--spacing-sm);
        }

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

        .comparison-table th,
        .comparison-table td {
            padding: 14px 16px;
            text-align: left;
            border-bottom: 1px solid rgba(0, 240, 255, 0.1);
        }

        .comparison-table th {
            background: rgba(0, 240, 255, 0.08);
            color: var(--accent-cyan);
            font-weight: 700;
            font-size: 0.95rem;
        }

        .comparison-table td {
            color: var(--text-silver);
            font-size: 0.9rem;
        }

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

        /* FAQ Section */
        .faq-section {
            padding: var(--spacing-lg) 0;
        }

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

        .faq-item {
            background: rgba(11, 26, 48, 0.8);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: var(--radius-md);
            margin-bottom: var(--spacing-sm);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-item:hover {
            border-color: rgba(0, 240, 255, 0.4);
        }

        .faq-question {
            padding: var(--spacing-sm) var(--spacing-md);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-white);
            user-select: none;
        }

        .faq-question i {
            color: var(--accent-cyan);
            transition: transform 0.3s ease;
        }

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

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

        .faq-item.active .faq-answer {
            max-height: 500px;
        }

        .faq-answer-inner {
            padding: 0 var(--spacing-md) var(--spacing-md);
        }

        /* CTA Section */
        .cta-section {
            padding: var(--spacing-xl) 0;
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.05), rgba(204, 255, 0, 0.05));
            border-top: 1px solid rgba(0, 240, 255, 0.2);
            border-bottom: 1px solid rgba(0, 240, 255, 0.2);
        }

        .cta-box {
            background: rgba(11, 26, 48, 0.9);
            backdrop-filter: blur(20px);
            border: 2px solid rgba(0, 240, 255, 0.4);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            text-align: center;
            box-shadow: 0 0 50px rgba(0, 240, 255, 0.2);
        }

        .cta-box h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: var(--spacing-xs);
            color: var(--text-white);
        }

        .cta-box p {
            color: var(--text-silver);
            font-size: 1.05rem;
            margin-bottom: var(--spacing-md);
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        /* Footer */
        .site-footer {
            background: rgba(15, 12, 32, 0.95);
            border-top: 1px solid rgba(0, 240, 255, 0.2);
            padding: var(--spacing-lg) 0 var(--spacing-md);
            margin-top: var(--spacing-lg);
        }

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

        .footer-brand .logo-link {
            margin-bottom: var(--spacing-sm);
        }

        .footer-brand p {
            color: var(--text-silver);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        .footer-col h4 {
            color: var(--accent-cyan);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 1px;
        }

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

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

        .footer-col ul li a {
            color: var(--text-silver);
            font-size: 0.9rem;
            transition: all 0.3s ease;
        }

        .footer-col ul li a:hover {
            color: var(--accent-cyan);
            padding-left: 5px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            padding-top: var(--spacing-md);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--spacing-xs);
            color: var(--text-silver);
            font-size: 0.85rem;
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(11, 26, 48, 0.85);
            backdrop-filter: blur(10px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(11, 26, 48, 0.85), rgba(11, 26, 48, 0.85)), linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            background-origin: border-box;
            background-clip: padding-box, border-box;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-cyan);
            opacity: 0.7;
            transition: all 0.3s ease;
            animation: fabFloat 3s infinite;
            cursor: pointer;
        }

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

        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 35px rgba(204, 255, 0, 0.6);
            color: var(--accent-lime);
        }

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

        .fab-notification {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 12px;
            height: 12px;
            background: #FF0055;
            border-radius: 50%;
            border: 2px solid var(--secondary-bg);
            animation: blink 1.5s infinite;
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-content {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .games-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                position: fixed;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(11, 26, 48, 0.98);
                flex-direction: column;
                padding: var(--spacing-md);
                gap: var(--spacing-xs);
                border-bottom: 1px solid rgba(0, 240, 255, 0.3);
                transform: translateY(-120%);
                transition: transform 0.4s ease;
                z-index: 999;
            }
            .nav-menu.open {
                transform: translateY(0);
            }
            .nav-menu a {
                width: 100%;
                text-align: center;
            }
            .nav-auth {
                gap: var(--spacing-xs);
            }
            .btn-login, .btn-signup {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
            .hero-section {
                padding: 120px 0 var(--spacing-lg);
            }
            .hero-text h1 {
                font-size: 2.2rem;
            }
            .games-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-xs);
            }
            .stat-number {
                font-size: 2rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-box h2 {
                font-size: 1.6rem;
            }
            .fab {
                width: 50px;
                height: 50px;
                font-size: 1.3rem;
                left: 12px;
                bottom: 80px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 var(--spacing-sm);
            }
            .hero-text h1 {
                font-size: 1.8rem;
            }
            .games-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .coupon-title {
                font-size: 1.3rem;
            }
            .btn-primary, .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .nav-auth .btn-login {
                display: none;
            }
            .logo-text .brand-main {
                font-size: 0.95rem;
            }
            .logo-text .brand-sub {
                font-size: 0.65rem;
            }
        }

/* roulang page: category3 */
:root {
            --bg-deep: #08090f;
            --bg-navy: #0d111e;
            --bg-card: rgba(18, 24, 42, 0.72);
            --glass-border: rgba(0, 240, 255, 0.18);
            --neon-cyan: #00f0ff;
            --electric-blue: #0052ff;
            --text-white: #ffffff;
            --text-silver: #cbd5e1;
            --text-muted: #7d8da6;
            --badge-bg: rgba(0, 240, 255, 0.08);
            --shadow-glow: 0 0 25px rgba(0, 240, 255, 0.22);
            --shadow-card: 0 18px 40px -18px rgba(0, 0, 0, 0.85);
            --radius-sm: 10px;
            --radius-md: 18px;
            --radius-lg: 28px;
            --radius-xl: 36px;
            --space-1: 8px;
            --space-2: 16px;
            --space-3: 24px;
            --space-4: 36px;
            --space-5: 52px;
            --space-6: 72px;
            --transition: 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            background: radial-gradient(circle at 20% 0%, #0a1022 0%, var(--bg-deep) 48%, var(--bg-navy) 100%);
            font-family: 'Inter', 'Segoe UI', Roboto, Arial, sans-serif;
            color: var(--text-white);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a:hover {
            color: var(--neon-cyan);
            opacity: 0.9;
        }

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--space-3);
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(8, 9, 15, 0.78);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            padding: 14px 0;
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--space-3);
            flex-wrap: wrap;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            min-width: 0;
        }

        .logo-icon {
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.18), rgba(0, 82, 255, 0.28));
            border: 1px solid var(--glass-border);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--neon-cyan);
            font-size: 1.4rem;
            box-shadow: 0 0 14px rgba(0, 240, 255, 0.25);
        }

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

        .brand-main {
            font-weight: 800;
            font-size: 1.1rem;
            letter-spacing: 0.3px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .brand-sub {
            font-size: 0.72rem;
            color: var(--neon-cyan);
            text-transform: uppercase;
            letter-spacing: 1.2px;
            font-weight: 600;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: var(--space-2);
            list-style: none;
            margin: 0;
        }

        .nav-menu li a {
            font-size: 0.95rem;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 30px;
            border: 1px solid transparent;
            color: var(--text-silver);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .nav-menu li a:hover,
        .nav-menu li a.active {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.08);
            border-color: var(--glass-border);
        }

        .nav-menu li a.active {
            background: rgba(0, 240, 255, 0.14);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.18);
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.9rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
        }

        .btn-outline {
            background: transparent;
            border: 1px solid rgba(0, 240, 255, 0.45);
            color: var(--neon-cyan);
        }

        .btn-outline:hover {
            background: rgba(0, 240, 255, 0.08);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.18);
            color: var(--text-white);
        }

        .btn-primary {
            background: linear-gradient(135deg, #0077ff, #0052ff);
            color: #fff;
            box-shadow: 0 6px 18px rgba(0, 82, 255, 0.35);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(0, 82, 255, 0.45);
            color: #fff;
        }

        .btn-glow {
            background: linear-gradient(135deg, #00d4ff, #0077ff);
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
        }

        .btn-glow:hover {
            box-shadow: 0 0 32px rgba(0, 212, 255, 0.65);
            transform: translateY(-2px);
        }

        /* Hero / Creator profile header */
        .hero-creator {
            padding: var(--space-6) 0 var(--space-5);
            position: relative;
        }

        .hero-creator::after {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .creator-grid {
            display: flex;
            align-items: center;
            gap: var(--space-5);
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }

        .creator-avatar {
            flex: 0 0 150px;
            width: 150px;
            height: 150px;
            border-radius: 50%;
            border: 3px solid var(--neon-cyan);
            box-shadow: var(--shadow-glow);
            background: url('/assets/images/coverpic/cover-10.png') center/cover no-repeat;
            position: relative;
        }

        .creator-avatar::after {
            content: "\f005";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            bottom: 6px;
            right: 6px;
            background: #ffbf00;
            color: #0b0b0b;
            border-radius: 50%;
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            border: 2px solid #0d111e;
        }

        .creator-info h1 {
            font-size: 2.1rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            line-height: 1.25;
            margin-bottom: 10px;
            color: var(--text-white);
        }

        .creator-info h1 span {
            color: var(--neon-cyan);
        }

        .creator-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 14px;
            align-items: center;
        }

        .badge-pill {
            background: var(--badge-bg);
            border: 1px solid var(--glass-border);
            color: var(--neon-cyan);
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .badge-data {
            background: rgba(0, 0, 0, 0.35);
            border: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--text-silver);
        }

        .follow-btn-wrap {
            margin-left: auto;
        }

        /* Metric dashboard */
        .metrics-panel {
            background: var(--bg-card);
            backdrop-filter: blur(22px);
            -webkit-backdrop-filter: blur(22px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            padding: var(--space-3);
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-2);
            box-shadow: var(--shadow-card);
            margin-top: var(--space-4);
        }

        .metric-item {
            text-align: center;
            padding: 12px 8px;
            border-right: 1px solid rgba(255, 255, 255, 0.06);
        }

        .metric-item:last-child {
            border-right: none;
        }

        .metric-value {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--neon-cyan);
            line-height: 1.2;
        }

        .metric-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-top: 6px;
        }

        /* Section general */
        .section {
            padding: var(--space-5) 0;
        }

        .section-title {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.4px;
            margin-bottom: 10px;
        }

        .section-sub {
            color: var(--text-silver);
            font-size: 1.05rem;
            max-width: 720px;
            line-height: 1.65;
            margin-bottom: var(--space-4);
        }

        .divider-glow {
            width: 70px;
            height: 4px;
            background: linear-gradient(90deg, var(--neon-cyan), var(--electric-blue));
            border-radius: 4px;
            margin: 14px 0 24px;
        }

        /* Strategy matrix */
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--space-3);
        }

        .matrix-card {
            background: var(--bg-card);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.07);
            border-radius: var(--radius-md);
            padding: var(--space-3);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .matrix-card:hover {
            border-color: rgba(0, 240, 255, 0.35);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.12);
            transform: translateY(-4px);
        }

        .matrix-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-white);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .matrix-card h3 i {
            color: var(--neon-cyan);
            font-size: 1.1rem;
        }

        .matrix-card p {
            color: var(--text-silver);
            font-size: 0.95rem;
            line-height: 1.65;
            margin-bottom: 0;
        }

        .tip-tag {
            display: inline-block;
            background: rgba(0, 240, 255, 0.1);
            border-radius: 20px;
            padding: 2px 10px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--neon-cyan);
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }

        /* Comparison block */
        .comparison-wrap {
            display: flex;
            gap: var(--space-3);
            align-items: stretch;
            flex-wrap: wrap;
        }

        .compare-card {
            flex: 1 1 280px;
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.07);
            border-radius: var(--radius-md);
            padding: var(--space-3);
            backdrop-filter: blur(18px);
        }

        .compare-card.best {
            border-color: rgba(0, 240, 255, 0.45);
            background: rgba(0, 82, 255, 0.12);
            box-shadow: var(--shadow-glow);
        }

        .compare-card h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text-white);
        }

        .compare-list {
            list-style: none;
            margin: 0;
        }

        .compare-list li {
            padding: 8px 0;
            color: var(--text-silver);
            font-size: 0.92rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .compare-list li i {
            color: var(--neon-cyan);
            width: 18px;
            text-align: center;
        }

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

        .faq-item {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(0, 240, 255, 0.25);
        }

        .faq-question {
            padding: 18px 20px;
            font-weight: 700;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-white);
            background: transparent;
            border: none;
            width: 100%;
            font-size: 1rem;
        }

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

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            color: var(--text-silver);
            font-size: 0.92rem;
            padding: 0 20px;
            line-height: 1.65;
        }

        .faq-item.active .faq-answer {
            max-height: 280px;
            padding: 0 20px 18px;
        }

        /* CTA form */
        .cta-panel {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.2), rgba(0, 240, 255, 0.08));
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: var(--space-4);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: var(--space-3);
            backdrop-filter: blur(16px);
        }

        .cta-panel h2 {
            font-size: 1.6rem;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .cta-panel p {
            color: var(--text-silver);
            margin-bottom: 0;
        }

        .cta-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            flex: 1 1 300px;
            min-width: 260px;
        }

        .cta-form input {
            flex: 1 1 200px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 30px;
            padding: 12px 20px;
            color: var(--text-white);
            outline: none;
            font-size: 0.9rem;
            transition: border var(--transition);
        }

        .cta-form input:focus {
            border-color: var(--neon-cyan);
            box-shadow: 0 0 10px rgba(0, 240, 255, 0.25);
        }

        .cta-form .btn {
            white-space: nowrap;
        }

        /* Floating Action Button */
        .fab-float {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.78);
            backdrop-filter: blur(10px);
            border: 2px solid transparent;
            background-clip: padding-box;
            border-image: linear-gradient(135deg, #00f0ff, #0052ff) 1;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--neon-cyan);
            font-size: 1.5rem;
            cursor: pointer;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.4);
            transition: all var(--transition);
            opacity: 0.75;
            animation: fabBreath 2.8s infinite ease-in-out;
        }

        .fab-float:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.65);
        }

        .fab-float .notification-dot {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 12px;
            height: 12px;
            background: #ff007f;
            border-radius: 50%;
            border: 2px solid #0d111e;
        }

        @keyframes fabBreath {
            0%, 100% { opacity: 0.65; }
            50% { opacity: 0.9; }
        }

        /* Footer */
        .site-footer {
            background: rgba(8, 9, 15, 0.92);
            border-top: 1px solid rgba(0, 240, 255, 0.12);
            padding: var(--space-5) 0 0;
            margin-top: var(--space-4);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: var(--space-4);
            padding-bottom: var(--space-4);
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-top: 14px;
            max-width: 340px;
            line-height: 1.6;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

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

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

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

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

        .footer-col ul li a i {
            width: 20px;
            color: var(--neon-cyan);
            margin-right: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            padding: 18px 0;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .metrics-panel {
                grid-template-columns: repeat(2, 1fr);
            }
            .matrix-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-wrap {
                flex-direction: column;
                align-items: stretch;
                gap: 10px;
            }
            .header-actions {
                justify-content: space-between;
            }
            .nav-menu {
                flex-wrap: wrap;
                justify-content: center;
                gap: 6px;
            }
            .creator-grid {
                flex-direction: column;
                text-align: center;
                gap: var(--space-3);
            }
            .creator-info h1 {
                font-size: 1.7rem;
            }
            .follow-btn-wrap {
                margin-left: 0;
            }
            .metrics-panel {
                grid-template-columns: 1fr 1fr;
            }
            .comparison-wrap {
                flex-direction: column;
            }
            .cta-panel {
                flex-direction: column;
                text-align: center;
            }
            .cta-form {
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 520px) {
            .brand-main {
                font-size: 0.95rem;
            }
            .logo-icon {
                width: 38px;
                height: 38px;
                font-size: 1.2rem;
            }
            .btn {
                padding: 9px 16px;
                font-size: 0.82rem;
            }
            .hero-creator {
                padding: var(--space-4) 0 var(--space-3);
            }
            .metrics-panel {
                grid-template-columns: 1fr 1fr;
                padding: var(--space-2);
            }
            .metric-value {
                font-size: 1.4rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .cta-panel h2 {
                font-size: 1.3rem;
            }
            .fab-float {
                width: 46px;
                height: 46px;
                font-size: 1.3rem;
                left: 12px;
                bottom: 80px;
            }
        }