/* roulang page: index */
:root {
            --primary-bg: #0B1A30;
            --secondary-bg: #0F0C20;
            --accent-cyan: #00F0FF;
            --accent-lime: #CCFF00;
            --accent-purple: #7B2FFF;
            --text-primary: #FFFFFF;
            --text-secondary: #A6ACAF;
            --text-muted: #6B7280;
            --border-neon: #00F0FF;
            --card-bg: rgba(15, 12, 32, 0.8);
            --card-border: rgba(0, 240, 255, 0.2);
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-neon-strong: 0 0 25px rgba(0, 240, 255, 0.7);
            --shadow-lime: 0 0 15px rgba(204, 255, 0, 0.4);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: var(--secondary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background:
                radial-gradient(ellipse at 20% 20%, rgba(0, 240, 255, 0.06) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 60%, rgba(204, 255, 0, 0.05) 0%, transparent 60%),
                radial-gradient(ellipse at 50% 90%, rgba(123, 47, 255, 0.04) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

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

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

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

        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

        /* Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            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, 0.15);
            padding: 0;
            transition: var(--transition-smooth);
        }

        .site-header.scrolled {
            background: rgba(11, 26, 48, 0.98);
            border-bottom-color: rgba(0, 240, 255, 0.3);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--accent-cyan);
            letter-spacing: -0.5px;
            text-shadow: 0 0 20px rgba(0, 240, 255, 0.6);
            flex-shrink: 0;
            text-decoration: none !important;
        }

        .nav-logo i {
            font-size: 1.6rem;
            color: var(--accent-lime);
            text-shadow: 0 0 12px rgba(204, 255, 0, 0.6);
        }

        .nav-logo span {
            white-space: nowrap;
        }

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

        .nav-links li a {
            display: block;
            padding: 8px 16px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-secondary);
            position: relative;
            white-space: nowrap;
            transition: var(--transition-fast);
        }

        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.2);
        }

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

        .btn-login {
            padding: 8px 20px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.9rem;
            background: transparent;
            color: var(--text-primary);
            border: 1px solid rgba(0, 240, 255, 0.5);
            transition: var(--transition-fast);
            white-space: nowrap;
        }

        .btn-login:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
            background: rgba(0, 240, 255, 0.06);
            color: var(--accent-cyan);
        }

        .btn-signup {
            padding: 8px 22px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.9rem;
            background: linear-gradient(135deg, var(--accent-lime), #99CC00);
            color: #0B1A30;
            border: none;
            box-shadow: var(--shadow-lime);
            white-space: nowrap;
            transition: var(--transition-smooth);
        }

        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 0 24px rgba(204, 255, 0, 0.6);
            background: linear-gradient(135deg, #DDFF33, #AAEE00);
            color: #0B1A30;
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--accent-cyan);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 4px 8px;
        }

        /* Hero Section */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            padding-top: 68px;
        }

        .hero-bg-video-wrapper {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 0;
            overflow: hidden;
        }

        .hero-bg-video-wrapper::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(180deg, rgba(11, 26, 48, 0.75) 0%, rgba(15, 12, 32, 0.85) 50%, rgba(11, 26, 48, 0.9) 100%);
            z-index: 1;
        }

        .hero-bg-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            top: 0;
            left: 0;
            filter: blur(2px) brightness(0.7);
            animation: slowZoom 20s infinite alternate;
        }

        @keyframes slowZoom {
            0% {
                transform: scale(1);
            }
            100% {
                transform: scale(1.08);
            }
        }

        .hero-overlay-particles {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 2;
            pointer-events: none;
            background:
                radial-gradient(circle at 30% 40%, rgba(0, 240, 255, 0.08) 0%, transparent 40%),
                radial-gradient(circle at 70% 60%, rgba(204, 255, 0, 0.06) 0%, transparent 35%);
        }

        .hero-content {
            position: relative;
            z-index: 3;
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
            padding: 60px 24px;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid rgba(0, 240, 255, 0.4);
            color: var(--accent-cyan);
            margin-bottom: 24px;
            text-transform: uppercase;
        }

        .hero-title {
            font-size: clamp(2.5rem, 5.5vw, 4rem);
            font-weight: 900;
            line-height: 1.15;
            margin-bottom: 20px;
            color: var(--text-primary);
            text-shadow: 0 0 30px rgba(0, 240, 255, 0.5);
            letter-spacing: -1px;
        }

        .hero-title span {
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: none;
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 680px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

        .hero-cta-group {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }

        .btn-hero-primary {
            padding: 14px 36px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1.05rem;
            background: linear-gradient(135deg, var(--accent-cyan), #00C4DF);
            color: #0B1A30;
            border: none;
            box-shadow: var(--shadow-neon);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition-smooth);
        }

        .btn-hero-primary:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-neon-strong);
            background: linear-gradient(135deg, #33F5FF, #00DFFA);
        }

        .btn-hero-play {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            border: 2px solid var(--accent-cyan);
            color: var(--accent-cyan);
            font-size: 1.4rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition-smooth);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
        }

        .btn-hero-play:hover {
            background: var(--accent-cyan);
            color: #0B1A30;
            box-shadow: var(--shadow-neon-strong);
            transform: scale(1.08);
        }

        .hero-stats {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 40px;
            flex-wrap: wrap;
        }

        .hero-stat-item {
            text-align: center;
        }

        .hero-stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-lime);
            text-shadow: 0 0 16px rgba(204, 255, 0, 0.5);
        }

        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-top: 4px;
        }

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

        .section-dark {
            background: rgba(11, 26, 48, 0.5);
        }

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

        .section-label {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 14px;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.4px;
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 240, 255, 0.25);
            margin-bottom: 14px;
            text-transform: uppercase;
        }

        .section-title {
            font-size: clamp(1.8rem, 3vw, 2.4rem);
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 14px;
            line-height: 1.25;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.65;
        }

        /* Lazyload - Latest Updates */
        .updates-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 28px;
            align-items: flex-start;
        }

        .updates-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .update-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 16px 18px;
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            transition: var(--transition-fast);
            text-decoration: none !important;
            color: inherit;
        }

        .update-item:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 14px rgba(0, 240, 255, 0.18);
            transform: translateX(4px);
        }

        .update-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(0, 240, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1rem;
            flex-shrink: 0;
        }

        .update-content h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
            line-height: 1.4;
        }

        .update-content .update-meta {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        .updates-sidebar {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 24px;
            position: sticky;
            top: 84px;
        }

        .sidebar-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent-cyan);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-stat {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

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

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

        .sidebar-stat .stat-val {
            font-weight: 700;
            color: var(--accent-lime);
            font-size: 0.95rem;
        }

        /* Quick Answers */
        .qa-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
        }

        .qa-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: var(--transition-fast);
        }

        .qa-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.15);
        }

        .qa-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--accent-lime);
            margin-bottom: 10px;
        }

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

        /* Info Grid */
        .info-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .info-img-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 2px solid rgba(0, 240, 255, 0.3);
            box-shadow: var(--shadow-neon);
        }

        .info-img-wrap img {
            width: 100%;
            height: auto;
            transition: transform 0.5s ease;
        }

        .info-img-wrap:hover img {
            transform: scale(1.03);
        }

        .info-text h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent-cyan);
            margin-bottom: 8px;
        }

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

        /* Security Trust Bar */
        .trust-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 20px;
            text-align: center;
        }

        .trust-item {
            padding: 24px 16px;
            background: rgba(0, 240, 255, 0.04);
            border: 1px solid rgba(0, 240, 255, 0.12);
            border-radius: var(--radius-md);
            transition: var(--transition-fast);
        }

        .trust-item:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.2);
            transform: translateY(-3px);
        }

        .trust-icon {
            font-size: 2.2rem;
            color: var(--accent-lime);
            margin-bottom: 12px;
            text-shadow: 0 0 10px rgba(204, 255, 0, 0.4);
        }

        .trust-item h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

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

        /* App / CTA */
        .app-cta-box {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.1), rgba(204, 255, 0, 0.08));
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: var(--radius-lg);
            padding: 50px 40px;
            text-align: center;
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.1);
        }

        .app-cta-box h3 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 14px;
        }

        .app-cta-box p {
            color: var(--text-secondary);
            max-width: 500px;
            margin: 0 auto 24px;
            line-height: 1.6;
        }

        .btn-cta-large {
            padding: 14px 38px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1.05rem;
            background: linear-gradient(135deg, var(--accent-lime), #99CC00);
            color: #0B1A30;
            border: none;
            box-shadow: var(--shadow-lime);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition-smooth);
        }

        .btn-cta-large:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(204, 255, 0, 0.6);
        }

        /* Media Scroll (Guest Highlights / Media Selection) */
        .media-scroll-wrapper {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            padding-bottom: 12px;
        }

        .media-scroll-track {
            display: flex;
            gap: 20px;
            min-width: max-content;
        }

        .media-card {
            width: 240px;
            flex-shrink: 0;
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition-fast);
            cursor: pointer;
        }

        .media-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.25);
            transform: translateY(-4px);
        }

        .media-card img {
            width: 100%;
            height: 150px;
            object-fit: cover;
        }

        .media-card-body {
            padding: 14px;
        }

        .media-card-body h5 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .media-card-body p {
            font-size: 0.78rem;
            color: var(--text-muted);
            line-height: 1.45;
        }

        .media-tag {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 10px;
            font-size: 0.7rem;
            font-weight: 700;
            background: rgba(0, 240, 255, 0.12);
            color: var(--accent-cyan);
            margin-bottom: 8px;
        }

        /* Footer */
        .site-footer {
            background: rgba(11, 26, 48, 0.95);
            border-top: 1px solid rgba(0, 240, 255, 0.2);
            padding: 50px 0 30px;
            position: relative;
            z-index: 1;
        }

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

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--accent-cyan);
            margin-bottom: 14px;
        }

        .footer-col p,
        .footer-col a {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
            display: block;
            margin-bottom: 6px;
            transition: var(--transition-fast);
        }

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

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

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

        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 16px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--accent-cyan);
        }

        /* FAB */
        .fab-container {
            position: fixed;
            left: 20px;
            bottom: 100px;
            z-index: 1050;
        }

        .fab-btn {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(11, 26, 48, 0.85);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.3rem;
            cursor: pointer;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            transition: var(--transition-smooth);
            opacity: 0.65;
            animation: fabPulse 3s infinite ease-in-out;
        }

        .fab-btn::before {
            content: '';
            position: absolute;
            inset: -3px;
            border-radius: 50%;
            padding: 2px;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            z-index: -1;
        }

        .fab-btn:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.7);
            color: var(--accent-lime);
            animation: none;
        }

        @keyframes fabPulse {
            0%,
            100% {
                box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            }
            50% {
                box-shadow: 0 0 32px rgba(0, 240, 255, 0.65);
            }
        }

        .fab-notification {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--accent-lime);
            box-shadow: 0 0 10px rgba(204, 255, 0, 0.8);
            animation: blinkNotif 1.2s infinite;
        }

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

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

            .updates-sidebar {
                position: static;
                margin-top: 20px;
            }

            .info-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .info-img-wrap {
                max-width: 400px;
                margin: 0 auto;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                width: 100%;
                background: rgba(11, 26, 48, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px;
                border-bottom: 2px solid rgba(0, 240, 255, 0.3);
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6);
                z-index: 999;
            }

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

            .nav-links li a {
                padding: 12px 16px;
                border-radius: 8px;
                width: 100%;
            }

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

            .hero-title {
                font-size: 2rem;
            }

            .hero-stats {
                gap: 20px;
            }

            .hero-stat-number {
                font-size: 1.5rem;
            }

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

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

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

            .fab-btn {
                width: 48px;
                height: 48px;
                font-size: 1.1rem;
            }
        }

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

            .hero-cta-group {
                flex-direction: column;
                gap: 12px;
            }

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

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

            .app-cta-box {
                padding: 30px 20px;
            }

            .app-cta-box h3 {
                font-size: 1.5rem;
            }
        }

/* roulang page: article */
:root {
            --primary-bg: #0B1A30;
            --secondary-bg: #0F0C20;
            --accent-cyan: #00F0FF;
            --accent-lime: #CCFF00;
            --accent-purple: #7B2FFF;
            --text-primary: #FFFFFF;
            --text-secondary: #A6ACAF;
            --text-muted: #6B7280;
            --border-neon: #00F0FF;
            --card-bg: rgba(15, 12, 32, 0.8);
            --card-border: rgba(0, 240, 255, 0.2);
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-neon-strong: 0 0 25px rgba(0, 240, 255, 0.7);
            --shadow-lime: 0 0 15px rgba(204, 255, 0, 0.4);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: var(--secondary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background:
                radial-gradient(ellipse at 20% 20%, rgba(0, 240, 255, 0.06) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 60%, rgba(204, 255, 0, 0.05) 0%, transparent 60%),
                radial-gradient(ellipse at 50% 90%, rgba(123, 47, 255, 0.04) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

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

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

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

        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

        /* Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            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, 0.15);
            padding: 0;
            transition: var(--transition-smooth);
        }

        .site-header.scrolled {
            background: rgba(11, 26, 48, 0.98);
            border-bottom-color: rgba(0, 240, 255, 0.3);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--accent-cyan);
            letter-spacing: -0.5px;
            text-shadow: 0 0 20px rgba(0, 240, 255, 0.6);
            flex-shrink: 0;
            text-decoration: none !important;
        }

        .nav-logo i {
            font-size: 1.6rem;
            color: var(--accent-lime);
            text-shadow: 0 0 12px rgba(204, 255, 0, 0.6);
        }

        .nav-logo span {
            white-space: nowrap;
        }

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

        .nav-links li a {
            display: block;
            padding: 8px 16px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-secondary);
            position: relative;
            white-space: nowrap;
            transition: var(--transition-fast);
        }

        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.2);
        }

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

        .btn-login {
            padding: 8px 20px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.9rem;
            background: transparent;
            color: var(--text-primary);
            border: 1px solid rgba(0, 240, 255, 0.5);
            transition: var(--transition-fast);
            white-space: nowrap;
        }

        .btn-login:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
            background: rgba(0, 240, 255, 0.06);
            color: var(--accent-cyan);
        }

        .btn-signup {
            padding: 8px 22px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.9rem;
            background: linear-gradient(135deg, var(--accent-lime), #99CC00);
            color: #0B1A30;
            border: none;
            box-shadow: var(--shadow-lime);
            white-space: nowrap;
            transition: var(--transition-smooth);
        }

        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 0 24px rgba(204, 255, 0, 0.6);
            background: linear-gradient(135deg, #DDFF33, #AAEE00);
            color: #0B1A30;
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--accent-cyan);
            font-size: 1.8rem;
            cursor: pointer;
            padding: 8px;
        }

        /* Hero Section - Whitepaper Capture */
        .article-hero {
            padding: 140px 0 60px;
            background: var(--primary-bg);
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--card-border);
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle at 30% 40%, rgba(0, 240, 255, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .hero-content h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            color: var(--text-primary);
            text-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
        }

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

        .hero-content .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 24px;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        .article-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
            background: var(--card-bg);
            padding: 6px 14px;
            border-radius: 20px;
            border: 1px solid var(--card-border);
        }

        .article-meta i {
            color: var(--accent-lime);
        }

        .hero-content .hero-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 520px;
        }

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

        .btn-primary-glow {
            padding: 12px 28px;
            border-radius: 28px;
            font-weight: 700;
            font-size: 1rem;
            background: linear-gradient(135deg, var(--accent-cyan), #00C8E0);
            color: #0B1A30;
            border: none;
            box-shadow: var(--shadow-neon);
            transition: var(--transition-smooth);
        }

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

        .btn-outline-glow {
            padding: 12px 28px;
            border-radius: 28px;
            font-weight: 600;
            font-size: 1rem;
            background: transparent;
            color: var(--accent-cyan);
            border: 2px solid var(--border-neon);
            transition: var(--transition-smooth);
        }

        .btn-outline-glow:hover {
            background: rgba(0, 240, 255, 0.08);
            box-shadow: var(--shadow-neon);
        }

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

        .whitepaper-card {
            background: var(--card-bg);
            border: 2px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 32px;
            text-align: center;
            box-shadow: var(--shadow-neon);
            transition: var(--transition-smooth);
            max-width: 420px;
            width: 100%;
            backdrop-filter: blur(10px);
        }

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

        .whitepaper-card img {
            width: 100%;
            max-width: 280px;
            margin: 0 auto 20px;
            border-radius: var(--radius-md);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
        }

        .whitepaper-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--accent-cyan);
            margin-bottom: 10px;
        }

        .whitepaper-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 20px;
        }

        .whitepaper-card .btn-download {
            padding: 10px 24px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.9rem;
            background: linear-gradient(135deg, var(--accent-lime), #AADD00);
            color: #0B1A30;
            border: none;
            box-shadow: var(--shadow-lime);
        }

        .whitepaper-card .btn-download:hover {
            box-shadow: 0 0 20px rgba(204, 255, 0, 0.6);
            transform: translateY(-1px);
        }

        /* Main Content Area */
        .article-main {
            padding: 60px 0;
            position: relative;
            z-index: 1;
        }

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

        .article-body {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 40px;
            backdrop-filter: blur(10px);
            color: var(--text-primary);
            line-height: 1.8;
            font-size: 1.05rem;
        }

        .article-body h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--accent-cyan);
            margin-top: 32px;
            margin-bottom: 16px;
            border-left: 4px solid var(--accent-lime);
            padding-left: 16px;
        }

        .article-body h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-top: 24px;
            margin-bottom: 12px;
        }

        .article-body p {
            margin-bottom: 16px;
            color: var(--text-secondary);
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
        }

        .article-body ul,
        .article-body ol {
            margin-left: 20px;
            margin-bottom: 20px;
            color: var(--text-secondary);
        }

        .article-body li {
            margin-bottom: 8px;
        }

        .article-not-found {
            text-align: center;
            padding: 60px 20px;
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--card-border);
        }

        .article-not-found i {
            font-size: 4rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .article-not-found h3 {
            font-size: 1.5rem;
            color: var(--text-secondary);
            margin-bottom: 12px;
        }

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

        .article-not-found .btn-back {
            padding: 10px 24px;
            border-radius: 24px;
            font-weight: 700;
            background: linear-gradient(135deg, var(--accent-cyan), #00B8D4);
            color: #0B1A30;
            border: none;
            box-shadow: var(--shadow-neon);
        }

        .article-not-found .btn-back:hover {
            box-shadow: var(--shadow-neon-strong);
            transform: translateY(-2px);
        }

        /* Sidebar */
        .article-sidebar {
            position: sticky;
            top: 100px;
        }

        .sidebar-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 24px;
            margin-bottom: 24px;
            backdrop-filter: blur(10px);
        }

        .sidebar-card h4 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--accent-cyan);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--card-border);
        }

        .related-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .related-list li {
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .related-list li:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: none;
        }

        .related-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition-fast);
        }

        .related-list a:hover {
            color: var(--accent-cyan);
            text-shadow: 0 0 8px rgba(0, 240, 255, 0.4);
        }

        .related-list i {
            color: var(--accent-lime);
            font-size: 0.75rem;
        }

        .promo-banner {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.1), rgba(204, 255, 0, 0.1));
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: var(--radius-lg);
            padding: 24px;
            text-align: center;
            margin-bottom: 24px;
            backdrop-filter: blur(10px);
        }

        .promo-banner i {
            font-size: 2.5rem;
            color: var(--accent-lime);
            margin-bottom: 12px;
            text-shadow: 0 0 16px rgba(204, 255, 0, 0.6);
        }

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

        .promo-banner p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }

        .promo-banner .btn-claim {
            padding: 8px 20px;
            border-radius: 20px;
            font-weight: 700;
            font-size: 0.85rem;
            background: linear-gradient(135deg, var(--accent-lime), #AADD00);
            color: #0B1A30;
            border: none;
            box-shadow: var(--shadow-lime);
        }

        .promo-banner .btn-claim:hover {
            box-shadow: 0 0 20px rgba(204, 255, 0, 0.7);
            transform: translateY(-1px);
        }

        /* CTA Section */
        .cta-section {
            padding: 70px 0;
            background: var(--primary-bg);
            position: relative;
            overflow: hidden;
            border-top: 1px solid var(--card-border);
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle at 50% 50%, rgba(0, 240, 255, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-card {
            background: var(--card-bg);
            border: 2px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 48px 32px;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
            backdrop-filter: blur(10px);
            box-shadow: var(--shadow-neon);
            transition: var(--transition-smooth);
        }

        .cta-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-neon-strong);
        }

        .cta-card i {
            font-size: 3rem;
            color: var(--accent-lime);
            margin-bottom: 16px;
            text-shadow: 0 0 20px rgba(204, 255, 0, 0.7);
        }

        .cta-card h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .cta-card h2 span {
            color: var(--accent-cyan);
            text-shadow: 0 0 12px rgba(0, 240, 255, 0.5);
        }

        .cta-card p {
            font-size: 1rem;
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        .cta-card .btn-cta-large {
            padding: 14px 36px;
            border-radius: 28px;
            font-weight: 700;
            font-size: 1.1rem;
            background: linear-gradient(135deg, var(--accent-lime), #AADD00);
            color: #0B1A30;
            border: none;
            box-shadow: var(--shadow-lime);
            transition: var(--transition-smooth);
        }

        .cta-card .btn-cta-large:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(204, 255, 0, 0.7);
        }

        /* Footer */
        .site-footer {
            background: #080F1A;
            padding: 56px 0 28px;
            border-top: 1px solid var(--card-border);
            position: relative;
            z-index: 1;
        }

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

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

        .footer-col p,
        .footer-col a {
            display: block;
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 10px;
            transition: var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--accent-lime);
            text-shadow: 0 0 8px rgba(204, 255, 0, 0.3);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            gap: 16px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .footer-badges {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-badge {
            display: flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.05);
            padding: 6px 14px;
            border-radius: 20px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.8rem;
            color: var(--text-secondary);
        }

        .footer-badge i {
            color: var(--accent-lime);
            font-size: 0.8rem;
        }

        /* FAB */
        .fab-support {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(15, 12, 32, 0.75);
            backdrop-filter: blur(10px);
            border: 2px solid var(--accent-cyan);
            color: var(--accent-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            transition: var(--transition-smooth);
            animation: float 3s ease-in-out infinite;
            opacity: 0.6;
        }

        .fab-support:hover {
            transform: scale(1.1);
            opacity: 1;
            box-shadow: 0 0 24px rgba(0, 240, 255, 0.7);
            color: var(--accent-lime);
            border-color: var(--accent-lime);
        }

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

        .fab-support .blink-dot {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #FF007F;
            box-shadow: 0 0 10px #FF007F;
            animation: blink 1.2s ease-in-out infinite;
        }

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

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

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .hero-content h1 {
                font-size: 2rem;
            }

            .hero-visual {
                order: -1;
            }

            .whitepaper-card {
                max-width: 100%;
            }

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

            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .article-body {
                padding: 28px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                width: 100%;
                flex-direction: column;
                background: rgba(11, 26, 48, 0.98);
                backdrop-filter: blur(20px);
                padding: 16px;
                border-bottom: 1px solid var(--card-border);
            }

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

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

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

            .btn-login,
            .btn-signup {
                padding: 6px 16px;
                font-size: 0.85rem;
            }

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

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

            .article-body {
                padding: 20px;
                font-size: 0.95rem;
            }

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

            .cta-card {
                padding: 32px 20px;
            }

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

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

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

        @media (max-width: 520px) {
            .nav-container {
                padding: 0 12px;
            }

            .nav-logo span {
                font-size: 1rem;
            }

            .hero-content h1 {
                font-size: 1.4rem;
            }

            .hero-content .hero-desc {
                font-size: 0.9rem;
            }

            .article-body h2 {
                font-size: 1.3rem;
            }

            .article-body {
                padding: 16px;
            }

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

            .fab-support {
                width: 44px;
                height: 44px;
                left: 8px;
                bottom: 80px;
                font-size: 1.2rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary-bg: #0B1A30;
            --secondary-bg: #0F0C20;
            --accent-cyan: #00F0FF;
            --accent-lime: #CCFF00;
            --accent-purple: #7B2FFF;
            --text-primary: #FFFFFF;
            --text-secondary: #A6ACAF;
            --text-muted: #6B7280;
            --border-neon: #00F0FF;
            --card-bg: rgba(15, 12, 32, 0.8);
            --card-border: rgba(0, 240, 255, 0.2);
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-neon-strong: 0 0 25px rgba(0, 240, 255, 0.7);
            --shadow-lime: 0 0 15px rgba(204, 255, 0, 0.4);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: var(--secondary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }
        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background:
                radial-gradient(ellipse at 20% 20%, rgba(0, 240, 255, 0.06) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 60%, rgba(204, 255, 0, 0.05) 0%, transparent 60%),
                radial-gradient(ellipse at 50% 90%, rgba(123, 47, 255, 0.04) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition-fast);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        .button {
            cursor: pointer;
            border: none;
            outline: none;
            font-family: inherit;
            transition: var(--transition-smooth);
        }

        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            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, 0.15);
            padding: 0;
            transition: var(--transition-smooth);
        }
        .site-header.scrolled {
            background: rgba(11, 26, 48, 0.98);
            border-bottom-color: rgba(0, 240, 255, 0.3);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--accent-cyan);
            letter-spacing: -0.5px;
            text-shadow: 0 0 20px rgba(0, 240, 255, 0.6);
            flex-shrink: 0;
            text-decoration: none !important;
        }
        .nav-logo i {
            font-size: 1.6rem;
            color: var(--accent-lime);
            text-shadow: 0 0 12px rgba(204, 255, 0, 0.6);
        }
        .nav-logo span {
            white-space: nowrap;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            display: block;
            padding: 8px 16px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-secondary);
            position: relative;
            white-space: nowrap;
            transition: var(--transition-fast);
        }
        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.2);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .btn-login {
            padding: 8px 20px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.9rem;
            background: transparent;
            color: var(--text-primary);
            border: 1px solid rgba(0, 240, 255, 0.5);
            transition: var(--transition-fast);
            white-space: nowrap;
        }
        .btn-login:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
            background: rgba(0, 240, 255, 0.06);
            color: var(--accent-cyan);
        }
        .btn-signup {
            padding: 8px 22px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.9rem;
            background: linear-gradient(135deg, var(--accent-lime), #99CC00);
            color: #0B1A30;
            border: none;
            box-shadow: var(--shadow-lime);
            white-space: nowrap;
            transition: var(--transition-smooth);
        }
        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 0 24px rgba(204, 255, 0, 0.6);
            background: linear-gradient(135deg, #DDFF33, #AAEE00);
            color: #0B1A30;
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--accent-cyan);
            font-size: 1.8rem;
            cursor: pointer;
            padding: 8px;
            line-height: 1;
            transition: var(--transition-fast);
        }
        .mobile-menu-toggle:hover {
            text-shadow: 0 0 10px rgba(0, 240, 255, 0.7);
        }

        /* Page Hero */
        .page-hero {
            padding: 140px 0 80px 0;
            text-align: left;
            position: relative;
            z-index: 1;
        }
        .page-hero .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .page-hero .hero-text h1 {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--text-primary);
            margin: 0 0 20px 0;
            line-height: 1.2;
            background: linear-gradient(135deg, var(--accent-cyan), #FFFFFF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-hero .hero-text p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            margin: 0 0 28px 0;
            line-height: 1.7;
        }
        .page-hero .hero-stats {
            display: flex;
            gap: 32px;
            margin-bottom: 28px;
        }
        .page-hero .hero-stat {
            text-align: left;
        }
        .page-hero .hero-stat .stat-number {
            font-size: 2rem;
            font-weight: 900;
            color: var(--accent-lime);
            text-shadow: var(--shadow-lime);
            display: block;
        }
        .page-hero .hero-stat .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .page-hero .hero-image {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-neon-strong);
            border: 1px solid var(--card-border);
        }
        .page-hero .hero-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }

        .btn-primary-lg {
            display: inline-block;
            padding: 14px 36px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1.05rem;
            background: linear-gradient(135deg, var(--accent-lime), #99CC00);
            color: #0B1A30;
            border: none;
            box-shadow: var(--shadow-lime);
            transition: var(--transition-smooth);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .btn-primary-lg:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(204, 255, 0, 0.7);
            background: linear-gradient(135deg, #DDFF33, #AAEE00);
            color: #0B1A30;
        }

        /* Sections */
        .section {
            padding: 72px 0;
            position: relative;
            z-index: 1;
        }
        .section-dark {
            background: rgba(11, 26, 48, 0.5);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin: 0 0 12px 0;
            text-align: left;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin: 0 0 40px 0;
            text-align: left;
            max-width: 700px;
        }

        /* Feature Cards */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }
        .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            transition: var(--transition-smooth);
            text-align: left;
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-lime));
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .feature-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-neon);
            transform: translateY(-4px);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-card .card-icon {
            font-size: 2rem;
            color: var(--accent-cyan);
            margin-bottom: 16px;
            text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
        }
        .feature-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 10px 0;
        }
        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        /* Room List */
        .room-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .room-item {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: var(--transition-smooth);
        }
        .room-item:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-neon);
        }
        .room-info h4 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--accent-cyan);
            margin: 0 0 6px 0;
        }
        .room-info p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin: 0;
        }
        .room-badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 12px;
            font-size: 0.8rem;
            font-weight: 700;
            background: rgba(204, 255, 0, 0.15);
            color: var(--accent-lime);
            text-shadow: 0 0 8px rgba(204, 255, 0, 0.4);
        }

        /* Rewards Grid */
        .rewards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }
        .reward-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: left;
            transition: var(--transition-smooth);
            position: relative;
        }
        .reward-card:hover {
            border-color: var(--accent-lime);
            box-shadow: var(--shadow-lime);
            transform: translateY(-4px);
        }
        .reward-card .reward-value {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--accent-lime);
            text-shadow: var(--shadow-lime);
            display: block;
            margin-bottom: 8px;
        }
        .reward-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 6px 0;
        }
        .reward-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* Steps */
        .steps-list {
            display: flex;
            flex-direction: column;
            gap: 24px;
            counter-reset: step-counter;
        }
        .step-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 20px;
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            transition: var(--transition-smooth);
            counter-increment: step-counter;
        }
        .step-item:hover {
            border-color: var(--accent-cyan);
        }
        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 1.2rem;
            color: #FFFFFF;
            flex-shrink: 0;
        }
        .step-content h4 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 6px 0;
        }
        .step-content p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition-smooth);
        }
        .faq-item:hover {
            border-color: var(--accent-cyan);
        }
        .faq-question {
            width: 100%;
            padding: 18px 24px;
            background: none;
            border: none;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 1rem;
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .faq-question i {
            color: var(--accent-cyan);
            font-size: 0.9rem;
            transition: transform 0.3s ease;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px 24px;
            display: none;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* CTA Section */
        .cta-section {
            padding: 80px 0;
            text-align: left;
            position: relative;
            z-index: 1;
        }
        .cta-box {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.1), rgba(204, 255, 0, 0.08));
            border: 2px solid var(--accent-cyan);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: left;
            box-shadow: var(--shadow-neon);
        }
        .cta-box h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin: 0 0 12px 0;
        }
        .cta-box p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin: 0 0 24px 0;
            max-width: 700px;
        }

        /* Footer */
        .site-footer {
            background: rgba(11, 26, 48, 0.95);
            border-top: 1px solid rgba(0, 240, 255, 0.2);
            padding: 60px 0 30px 0;
            position: relative;
            z-index: 1;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 32px;
            margin-bottom: 40px;
        }
        .footer-col h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent-cyan);
            margin: 0 0 16px 0;
        }
        .footer-col p,
        .footer-col a {
            font-size: 0.95rem;
            color: var(--text-secondary);
            display: block;
            margin-bottom: 8px;
            transition: var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--accent-lime);
        }
        .footer-bottom {
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            padding-top: 20px;
            text-align: left;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-bottom p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0;
        }
        .footer-badges {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .footer-badge {
            font-size: 0.85rem;
            color: var(--accent-lime);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .footer-badge i {
            font-size: 1rem;
        }

        @media (max-width: 1024px) {
            .page-hero .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .page-hero .hero-text h1 {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
        }
        @media (max-width: 768px) {
            .nav-links,
            .nav-actions {
                display: none;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-links.mobile-open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 68px;
                left: 0;
                width: 100%;
                background: rgba(11, 26, 48, 0.98);
                padding: 16px 24px;
                gap: 8px;
                border-bottom: 1px solid rgba(0, 240, 255, 0.3);
                z-index: 999;
            }
            .nav-actions.mobile-open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 280px;
                left: 0;
                width: 100%;
                background: rgba(11, 26, 48, 0.98);
                padding: 0 24px 16px 24px;
                gap: 10px;
                border-bottom: 1px solid rgba(0, 240, 255, 0.3);
                z-index: 999;
            }
            .page-hero {
                padding: 120px 0 48px 0;
            }
            .page-hero .hero-text h1 {
                font-size: 1.8rem;
            }
            .page-hero .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .feature-grid,
            .rewards-grid {
                grid-template-columns: 1fr;
            }
            .room-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .cta-box {
                padding: 32px 20px;
            }
            .cta-box h2 {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: left;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-hero {
                padding: 100px 0 40px 0;
            }
            .page-hero .hero-text h1 {
                font-size: 1.5rem;
            }
            .btn-primary-lg {
                padding: 12px 24px;
                font-size: 0.95rem;
            }
            .step-item {
                flex-direction: column;
                align-items: flex-start;
            }
        }

/* roulang page: category3 */
:root {
            --primary-bg: #0B1A30;
            --secondary-bg: #0F0C20;
            --accent-cyan: #00F0FF;
            --accent-lime: #CCFF00;
            --accent-purple: #7B2FFF;
            --text-primary: #FFFFFF;
            --text-secondary: #A6ACAF;
            --text-muted: #6B7280;
            --border-neon: #00F0FF;
            --card-bg: rgba(15, 12, 32, 0.8);
            --card-border: rgba(0, 240, 255, 0.2);
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-neon-strong: 0 0 25px rgba(0, 240, 255, 0.7);
            --shadow-lime: 0 0 15px rgba(204, 255, 0, 0.4);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: var(--secondary-bg);
            color: var(--text-primary);
            line-height: 1.7;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background:
                radial-gradient(ellipse at 20% 20%, rgba(0, 240, 255, 0.06) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 60%, rgba(204, 255, 0, 0.05) 0%, transparent 60%),
                radial-gradient(ellipse at 50% 90%, rgba(123, 47, 255, 0.04) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

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

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

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

        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

        /* Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            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, 0.15);
            padding: 0;
            transition: var(--transition-smooth);
        }

        .site-header.scrolled {
            background: rgba(11, 26, 48, 0.98);
            border-bottom-color: rgba(0, 240, 255, 0.3);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--accent-cyan);
            letter-spacing: -0.5px;
            text-shadow: 0 0 20px rgba(0, 240, 255, 0.6);
            flex-shrink: 0;
            text-decoration: none !important;
        }

        .nav-logo i {
            font-size: 1.6rem;
            color: var(--accent-lime);
            text-shadow: 0 0 12px rgba(204, 255, 0, 0.6);
        }

        .nav-logo span {
            white-space: nowrap;
        }

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

        .nav-links li a {
            display: block;
            padding: 8px 16px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-secondary);
            position: relative;
            white-space: nowrap;
            transition: var(--transition-fast);
        }

        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.2);
        }

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

        .btn-login {
            padding: 8px 20px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.9rem;
            background: transparent;
            color: var(--text-primary);
            border: 1px solid rgba(0, 240, 255, 0.5);
            transition: var(--transition-fast);
            white-space: nowrap;
        }

        .btn-login:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
            background: rgba(0, 240, 255, 0.06);
            color: var(--accent-cyan);
        }

        .btn-signup {
            padding: 8px 22px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.9rem;
            background: linear-gradient(135deg, var(--accent-lime), #99CC00);
            color: #0B1A30;
            border: none;
            box-shadow: var(--shadow-lime);
            white-space: nowrap;
            transition: var(--transition-smooth);
        }

        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 0 24px rgba(204, 255, 0, 0.6);
            background: linear-gradient(135deg, #DDFF33, #AAEE00);
            color: #0B1A30;
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--accent-cyan);
            font-size: 1.8rem;
            padding: 8px;
            cursor: pointer;
        }

        /* Page Hero */
        .page-hero {
            position: relative;
            padding: 140px 0 80px;
            text-align: left;
            background: linear-gradient(180deg, rgba(11, 26, 48, 0.95) 0%, rgba(15, 12, 32, 0.9) 50%, var(--secondary-bg) 100%);
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }

        .page-hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .page-hero-text h1 {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--text-primary);
            line-height: 1.2;
            margin-bottom: 20px;
            text-shadow: 0 0 30px rgba(0, 240, 255, 0.4);
        }

        .page-hero-text h1 span {
            color: var(--accent-cyan);
        }

        .page-hero-text p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: 30px;
            line-height: 1.7;
        }

        .hero-stats-panel {
            background: rgba(15, 12, 32, 0.9);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 32px;
            backdrop-filter: blur(10px);
            position: relative;
            z-index: 2;
        }

        .hero-stats-panel h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--accent-cyan);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .stat-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: var(--transition-fast);
        }

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

        .stat-item:hover {
            background: rgba(0, 240, 255, 0.03);
        }

        .stat-name {
            font-weight: 600;
            font-size: 0.95rem;
        }

        .stat-value {
            font-weight: 700;
            color: var(--accent-lime);
            font-size: 1rem;
            text-shadow: 0 0 10px rgba(204, 255, 0, 0.3);
        }

        .btn-primary-hero {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: linear-gradient(135deg, var(--accent-cyan), #00C4D4);
            color: #0B1A30;
            font-weight: 700;
            font-size: 1rem;
            border-radius: 30px;
            box-shadow: var(--shadow-neon);
            transition: var(--transition-smooth);
            text-decoration: none;
        }

        .btn-primary-hero:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-neon-strong);
            color: #0B1A30;
        }

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

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 20px;
            color: var(--text-primary);
            line-height: 1.3;
        }

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

        /* Events Grid */
        .events-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 50px;
        }

        .event-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition-smooth);
            position: relative;
        }

        .event-card:hover {
            transform: translateY(-5px);
            border-color: var(--accent-cyan);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.25);
        }

        .event-card-img {
            height: 220px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .event-tag {
            position: absolute;
            top: 16px;
            right: 16px;
            background: linear-gradient(135deg, #FF4500, #FF0000);
            color: #FFF;
            font-weight: 700;
            font-size: 0.8rem;
            padding: 6px 16px;
            border-radius: 20px;
            text-transform: uppercase;
            box-shadow: 0 0 15px rgba(255, 69, 0, 0.6);
            z-index: 2;
        }

        .event-card-body {
            padding: 24px;
        }

        .event-card-body h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .event-card-body .event-time {
            font-size: 0.85rem;
            color: var(--accent-cyan);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .event-card-body p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 18px;
        }

        .event-reward {
            background: rgba(204, 255, 0, 0.08);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            font-weight: 600;
            color: var(--accent-lime);
            font-size: 0.9rem;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .btn-event-cta {
            display: block;
            width: 100%;
            text-align: center;
            padding: 12px;
            border-radius: 25px;
            font-weight: 700;
            background: transparent;
            color: var(--accent-cyan);
            border: 1px solid var(--accent-cyan);
            transition: var(--transition-fast);
        }

        .btn-event-cta:hover {
            background: var(--accent-cyan);
            color: #0B1A30;
            box-shadow: var(--shadow-neon);
        }

        /* Process Section */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-top: 50px;
        }

        .process-step {
            text-align: left;
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            position: relative;
            transition: var(--transition-smooth);
        }

        .process-step:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.2);
        }

        .step-number {
            font-size: 3rem;
            font-weight: 900;
            color: rgba(0, 240, 255, 0.15);
            position: absolute;
            top: 15px;
            right: 20px;
            line-height: 1;
        }

        .process-step h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
            position: relative;
            z-index: 1;
        }

        .process-step p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.6;
            position: relative;
            z-index: 1;
        }

        /* Timeline */
        .timeline-section {
            background: rgba(11, 26, 48, 0.5);
        }

        .timeline {
            position: relative;
            margin-top: 50px;
            padding-left: 40px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 15px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, var(--accent-cyan), var(--accent-purple));
        }

        .timeline-item {
            position: relative;
            margin-bottom: 40px;
            padding-left: 30px;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -34px;
            top: 5px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--accent-cyan);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.8);
        }

        .timeline-date {
            font-size: 0.9rem;
            color: var(--accent-lime);
            font-weight: 700;
            margin-bottom: 6px;
        }

        .timeline-item h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .timeline-item p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        /* FAQ */
        .faq-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-top: 50px;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: var(--transition-smooth);
            cursor: default;
        }

        .faq-item:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.15);
        }

        .faq-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--accent-cyan);
        }

        .faq-item p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.6;
            margin: 0;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.08), rgba(204, 255, 0, 0.05));
            padding: 80px 0;
            text-align: center;
            border-top: 1px solid var(--card-border);
            border-bottom: 1px solid var(--card-border);
        }

        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 15px;
        }

        .cta-section p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 30px;
            line-height: 1.7;
        }

        .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 40px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1.1rem;
            background: linear-gradient(135deg, var(--accent-lime), #99CC00);
            color: #0B1A30;
            box-shadow: var(--shadow-lime);
            transition: var(--transition-smooth);
        }

        .btn-cta-large:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(204, 255, 0, 0.7);
            color: #0B1A30;
        }

        /* Footer */
        .site-footer {
            background: rgba(11, 26, 48, 0.9);
            border-top: 1px solid rgba(0, 240, 255, 0.2);
            padding: 60px 0 30px;
            position: relative;
            z-index: 1;
        }

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

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

        .footer-col p,
        .footer-col a {
            font-size: 0.9rem;
            color: var(--text-secondary);
            display: block;
            margin-bottom: 8px;
            transition: var(--transition-fast);
            line-height: 1.6;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 25px;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .footer-badges {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-top: 15px;
            flex-wrap: wrap;
        }

        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.8rem;
            color: var(--accent-cyan);
            font-weight: 600;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .page-hero-content {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .events-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .page-hero-text h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                width: 100%;
                background: rgba(11, 26, 48, 0.98);
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--card-border);
                z-index: 999;
            }
            .nav-links.active {
                display: flex;
            }
            .nav-links li a {
                width: 100%;
                text-align: center;
                padding: 12px;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-actions {
                display: flex !important;
            }
            .events-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .page-hero {
                padding: 120px 0 60px;
            }
            .page-hero-text h1 {
                font-size: 1.8rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .nav-container {
                padding: 0 16px;
            }
            .btn-login,
            .btn-signup {
                font-size: 0.8rem;
                padding: 6px 14px;
            }
            .page-hero-text h1 {
                font-size: 1.5rem;
            }
            .section {
                padding: 50px 0;
            }
        }

/* roulang page: category4 */
:root {
            --primary-bg: #0B1A30;
            --secondary-bg: #0F0C20;
            --accent-cyan: #00F0FF;
            --accent-lime: #CCFF00;
            --accent-purple: #7B2FFF;
            --text-primary: #FFFFFF;
            --text-secondary: #A6ACAF;
            --text-muted: #6B7280;
            --border-neon: #00F0FF;
            --card-bg: rgba(15, 12, 32, 0.8);
            --card-border: rgba(0, 240, 255, 0.2);
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-neon-strong: 0 0 25px rgba(0, 240, 255, 0.7);
            --shadow-lime: 0 0 15px rgba(204, 255, 0, 0.4);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s ease;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: var(--secondary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background:
                radial-gradient(ellipse at 20% 20%, rgba(0, 240, 255, 0.06) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 60%, rgba(204, 255, 0, 0.05) 0%, transparent 60%),
                radial-gradient(ellipse at 50% 90%, rgba(123, 47, 255, 0.04) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

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

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

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

        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            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, 0.15);
            padding: 0;
            transition: var(--transition-smooth);
        }

        .site-header.scrolled {
            background: rgba(11, 26, 48, 0.98);
            border-bottom-color: rgba(0, 240, 255, 0.3);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--accent-cyan);
            letter-spacing: -0.5px;
            text-shadow: 0 0 20px rgba(0, 240, 255, 0.6);
            flex-shrink: 0;
            text-decoration: none !important;
        }

        .nav-logo i {
            font-size: 1.6rem;
            color: var(--accent-lime);
            text-shadow: 0 0 12px rgba(204, 255, 0, 0.6);
        }

        .nav-logo span {
            white-space: nowrap;
        }

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

        .nav-links li a {
            display: block;
            padding: 8px 16px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-secondary);
            position: relative;
            white-space: nowrap;
            transition: var(--transition-fast);
        }

        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.2);
        }

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

        .btn-login {
            padding: 8px 20px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.9rem;
            background: transparent;
            color: var(--text-primary);
            border: 1px solid rgba(0, 240, 255, 0.5);
            transition: var(--transition-fast);
            white-space: nowrap;
        }

        .btn-login:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
            background: rgba(0, 240, 255, 0.06);
            color: var(--accent-cyan);
        }

        .btn-signup {
            padding: 8px 22px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.9rem;
            background: linear-gradient(135deg, var(--accent-lime), #99CC00);
            color: #0B1A30;
            border: none;
            box-shadow: var(--shadow-lime);
            white-space: nowrap;
            transition: var(--transition-smooth);
        }

        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 0 24px rgba(204, 255, 0, 0.6);
            background: linear-gradient(135deg, #DDFF33, #AAEE00);
            color: #0B1A30;
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--accent-cyan);
            font-size: 1.8rem;
            padding: 4px 8px;
            cursor: pointer;
        }

        .page-hero {
            position: relative;
            padding: 140px 0 70px;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 12, 32, 0.75) 0%, rgba(11, 26, 48, 0.9) 100%);
            z-index: 0;
        }

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

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--accent-cyan);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .hero-content h1 {
            font-size: 2.8rem;
            font-weight: 900;
            line-height: 1.2;
            color: #fff;
            margin-bottom: 16px;
            text-shadow: 0 0 30px rgba(0, 240, 255, 0.4);
        }

        .hero-content h1 span {
            color: var(--accent-lime);
            text-shadow: 0 0 20px rgba(204, 255, 0, 0.5);
        }

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

        .btn-hero {
            display: inline-block;
            padding: 14px 36px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1.05rem;
            background: linear-gradient(135deg, var(--accent-cyan), #00C8E0);
            color: #0B1A30;
            box-shadow: var(--shadow-neon);
            transition: var(--transition-smooth);
        }

        .btn-hero:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-neon-strong);
            background: linear-gradient(135deg, #33F5FF, #00F0FF);
            color: #0B1A30;
        }

        .section {
            padding: 70px 0;
        }

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

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

        .highlight {
            color: var(--accent-cyan);
            font-weight: 700;
        }

        .bento-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 24px;
            margin-bottom: 30px;
        }

        .bento-main {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 36px;
            backdrop-filter: blur(12px);
            transition: var(--transition-smooth);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .bento-main:hover {
            border-color: rgba(0, 240, 255, 0.5);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.15);
        }

        .bento-main h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--accent-cyan);
        }

        .bento-main p {
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .bento-side {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .bento-mini {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 24px;
            backdrop-filter: blur(12px);
            transition: var(--transition-smooth);
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .bento-mini:hover {
            border-color: rgba(204, 255, 0, 0.4);
            box-shadow: 0 0 16px rgba(204, 255, 0, 0.12);
        }

        .bento-mini-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: rgba(0, 240, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-cyan);
            flex-shrink: 0;
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.25);
        }

        .bento-mini h4 {
            font-size: 1rem;
            font-weight: 700;
            margin: 0 0 4px;
            color: #fff;
        }

        .bento-mini p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin: 0;
        }

        .cta-strip {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.08), rgba(204, 255, 0, 0.05));
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 24px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            backdrop-filter: blur(12px);
        }

        .cta-strip p {
            font-size: 1.05rem;
            font-weight: 600;
            color: #fff;
            margin: 0;
        }

        .btn-cta-strip {
            display: inline-block;
            padding: 12px 30px;
            border-radius: 28px;
            font-weight: 700;
            font-size: 0.95rem;
            background: linear-gradient(135deg, var(--accent-lime), #99CC00);
            color: #0B1A30;
            box-shadow: var(--shadow-lime);
            white-space: nowrap;
            transition: var(--transition-smooth);
        }

        .btn-cta-strip:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 24px rgba(204, 255, 0, 0.6);
            color: #0B1A30;
        }

        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }

        .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            backdrop-filter: blur(12px);
            transition: var(--transition-smooth);
            text-align: left;
        }

        .feature-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.15);
            transform: translateY(-4px);
        }

        .feature-card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: rgba(204, 255, 0, 0.1);
            color: var(--accent-lime);
            font-size: 1.4rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }

        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

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

        .process-timeline {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .process-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }

        .process-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), #00C8E0);
            color: #0B1A30;
            font-weight: 900;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            box-shadow: var(--shadow-neon);
        }

        .process-text h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }

        .process-text p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .tips-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .tip-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            padding: 24px;
            backdrop-filter: blur(10px);
            transition: var(--transition-smooth);
        }

        .tip-card:hover {
            border-color: rgba(204, 255, 0, 0.5);
            box-shadow: 0 0 16px rgba(204, 255, 0, 0.1);
        }

        .tip-card span.tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 16px;
            background: rgba(204, 255, 0, 0.12);
            color: var(--accent-lime);
            font-size: 0.78rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .tip-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

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

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            backdrop-filter: blur(10px);
            cursor: pointer;
            transition: var(--transition-smooth);
        }

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

        .faq-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin: 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .faq-item h4 i {
            color: var(--accent-cyan);
            transition: var(--transition-fast);
            font-size: 0.9rem;
        }

        .faq-item p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-top: 12px;
            display: none;
        }

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

        .faq-item.open h4 i {
            transform: rotate(180deg);
        }

        .cta-section {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.06), rgba(123, 47, 255, 0.06));
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 48px 36px;
            text-align: left;
            backdrop-filter: blur(12px);
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-section p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            margin-bottom: 24px;
            max-width: 600px;
        }

        .btn-cta-lg {
            display: inline-block;
            padding: 14px 36px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1.05rem;
            background: linear-gradient(135deg, var(--accent-lime), #99CC00);
            color: #0B1A30;
            box-shadow: var(--shadow-lime);
            transition: var(--transition-smooth);
        }

        .btn-cta-lg:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(204, 255, 0, 0.5);
            color: #0B1A30;
        }

        .site-footer {
            background: rgba(15, 12, 32, 0.7);
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            padding: 48px 0 24px;
            margin-top: 40px;
            position: relative;
            z-index: 1;
        }

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

        .footer-col h4 {
            color: var(--accent-cyan);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .footer-col p,
        .footer-col a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
            display: block;
            margin-bottom: 6px;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: space-between;
            align-items: center;
        }

        .footer-bottom p {
            color: var(--text-muted);
            font-size: 0.85rem;
            margin: 0;
        }

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

        .footer-badge {
            padding: 6px 14px;
            border-radius: 16px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.2);
            color: var(--accent-cyan);
            font-size: 0.8rem;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .fab-left {
            position: fixed;
            left: 20px;
            bottom: 96px;
            z-index: 900;
            width: 52px;
            height: 52px;
            border-radius: 50px;
            background: rgba(15, 12, 32, 0.7);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 2px solid transparent;
            border-image: linear-gradient(135deg, #00F0FF, #CCFF00) 1;
            color: var(--accent-cyan);
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.4);
            transition: var(--transition-smooth);
            cursor: pointer;
            animation: floatNeon 3s ease-in-out infinite;
        }

        .fab-left:hover {
            transform: scale(1.1);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.7);
            opacity: 1;
        }

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

        .fab-left .badge-dot {
            position: absolute;
            top: 6px;
            right: 8px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #FF007F;
            box-shadow: 0 0 10px #FF007F;
            animation: blinkDot 1.2s infinite;
        }

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

        @media (max-width: 1024px) {
            .bento-grid {
                grid-template-columns: 1fr;
            }
            .hero-content h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 68px;
                left: 0;
                width: 100%;
                background: rgba(11, 26, 48, 0.98);
                backdrop-filter: blur(20px);
                border-bottom: 1px solid rgba(0, 240, 255, 0.2);
                padding: 16px 24px;
                gap: 4px;
                z-index: 999;
            }
            .nav-links.show {
                display: flex;
            }
            .nav-links li a {
                padding: 10px 16px;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-actions {
                gap: 6px;
            }
            .btn-login,
            .btn-signup {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .cta-strip {
                flex-direction: column;
                text-align: center;
            }
            .page-hero {
                padding: 120px 0 50px;
            }
        }

        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 1.5rem;
            }
            .hero-content p {
                font-size: 0.95rem;
            }
            .container {
                padding: 0 16px;
            }
            .bento-main {
                padding: 24px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category2 */
:root {
            --primary-bg: #0B1A30;
            --secondary-bg: #0F0C20;
            --accent-cyan: #00F0FF;
            --accent-lime: #CCFF00;
            --accent-purple: #7B2FFF;
            --text-primary: #FFFFFF;
            --text-secondary: #A6ACAF;
            --text-muted: #6B7280;
            --border-neon: #00F0FF;
            --card-bg: rgba(15, 12, 32, 0.8);
            --card-border: rgba(0, 240, 255, 0.2);
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-neon-strong: 0 0 25px rgba(0, 240, 255, 0.7);
            --shadow-lime: 0 0 15px rgba(204, 255, 0, 0.4);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: var(--secondary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }
        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 20% 20%, rgba(0, 240, 255, 0.06) 0%, transparent 60%),
                        radial-gradient(ellipse at 80% 60%, rgba(204, 255, 0, 0.05) 0%, transparent 60%),
                        radial-gradient(ellipse at 50% 90%, rgba(123, 47, 255, 0.04) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition-fast);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        .button {
            cursor: pointer;
            border: none;
            outline: none;
            font-family: inherit;
            transition: var(--transition-smooth);
        }
        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            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, 0.15);
            padding: 0;
            transition: var(--transition-smooth);
        }
        .site-header.scrolled {
            background: rgba(11, 26, 48, 0.98);
            border-bottom-color: rgba(0, 240, 255, 0.3);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--accent-cyan);
            letter-spacing: -0.5px;
            text-shadow: 0 0 20px rgba(0, 240, 255, 0.6);
            flex-shrink: 0;
            text-decoration: none !important;
        }
        .nav-logo i {
            font-size: 1.6rem;
            color: var(--accent-lime);
            text-shadow: 0 0 12px rgba(204, 255, 0, 0.6);
        }
        .nav-logo span {
            white-space: nowrap;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            display: block;
            padding: 8px 16px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-secondary);
            position: relative;
            white-space: nowrap;
            transition: var(--transition-fast);
        }
        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.2);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .btn-login {
            padding: 8px 20px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.9rem;
            background: transparent;
            color: var(--text-primary);
            border: 1px solid rgba(0, 240, 255, 0.5);
            transition: var(--transition-fast);
            white-space: nowrap;
        }
        .btn-login:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
            background: rgba(0, 240, 255, 0.06);
            color: var(--accent-cyan);
        }
        .btn-signup {
            padding: 8px 22px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.9rem;
            background: linear-gradient(135deg, var(--accent-lime), #99CC00);
            color: #0B1A30;
            border: none;
            box-shadow: var(--shadow-lime);
            white-space: nowrap;
            transition: var(--transition-smooth);
        }
        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 0 24px rgba(204, 255, 0, 0.6);
            background: linear-gradient(135deg, #DDFF33, #AAEE00);
            color: #0B1A30;
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--accent-cyan);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 8px;
        }
        .page-hero {
            padding: 120px 0 60px;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            position: relative;
            z-index: 1;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: 0; left: 0; width: 100%; height: 100%;
            background: linear-gradient(135deg, rgba(15, 12, 32, 0.85) 0%, rgba(11, 26, 48, 0.7) 100%);
            z-index: -1;
        }
        .hero-content {
            max-width: 800px;
            margin: 0 auto;
            text-align: left;
        }
        .hero-content h1 {
            font-size: 2.75rem;
            font-weight: 900;
            color: var(--accent-cyan);
            text-shadow: 0 0 30px rgba(0, 240, 255, 0.6);
            margin-bottom: 16px;
            letter-spacing: -1px;
        }
        .hero-content p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            margin-bottom: 24px;
            line-height: 1.7;
        }
        .badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 20px;
        }
        .badge-pill {
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid rgba(0, 240, 255, 0.3);
            padding: 6px 16px;
            border-radius: 24px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-cyan);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 40px;
            max-width: 700px;
        }
        .code-showcase {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 20px;
            margin-bottom: 60px;
        }
        .code-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .code-card:hover {
            border-color: var(--accent-lime);
            box-shadow: 0 0 20px rgba(204, 255, 0, 0.2);
            transform: translateY(-4px);
        }
        .code-tag {
            position: absolute;
            top: 12px;
            right: 12px;
            background: linear-gradient(135deg, #FF007F, #FF4500);
            color: white;
            font-size: 0.7rem;
            font-weight: 800;
            padding: 4px 12px;
            border-radius: 12px;
            text-transform: uppercase;
        }
        .code-value {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent-lime);
            letter-spacing: 2px;
            margin-bottom: 8px;
            background: rgba(0,0,0,0.3);
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            display: inline-block;
            text-shadow: 0 0 12px rgba(204, 255, 0, 0.5);
        }
        .code-reward {
            font-weight: 700;
            color: white;
            margin-bottom: 4px;
        }
        .steps-list {
            list-style: none;
            padding: 0;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 24px;
            margin-bottom: 60px;
        }
        .steps-list li {
            background: rgba(11, 26, 48, 0.6);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-md);
            padding: 20px;
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        .step-num {
            font-size: 2rem;
            font-weight: 900;
            color: var(--accent-cyan);
            text-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
        }
        .faq-block {
            max-width: 800px;
            margin: 40px auto 60px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: rgba(15, 12, 32, 0.5);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            cursor: pointer;
            transition: var(--transition-smooth);
        }
        .faq-item:hover {
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.04);
        }
        .faq-q {
            font-weight: 700;
            color: var(--accent-cyan);
            margin-bottom: 8px;
            font-size: 1.05rem;
        }
        .faq-a {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        .cta-section {
            background: rgba(11, 26, 48, 0.7);
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: var(--radius-lg);
            padding: 50px 30px;
            margin: 60px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
        }
        .btn-primary-glow {
            padding: 14px 36px;
            border-radius: 30px;
            font-weight: 800;
            font-size: 1.1rem;
            background: linear-gradient(135deg, var(--accent-lime), #99CC00);
            color: #0B1A30;
            box-shadow: 0 0 20px rgba(204, 255, 0, 0.55);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary-glow:hover {
            box-shadow: 0 0 30px rgba(204, 255, 0, 0.8);
            color: #0B1A30;
        }
        .site-footer {
            background: #060918;
            border-top: 1px solid rgba(0, 240, 255, 0.2);
            padding: 50px 0 30px;
            margin-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-col h4 {
            color: var(--accent-cyan);
            font-weight: 700;
            margin-bottom: 12px;
        }
        .footer-col a {
            display: block;
            color: var(--text-secondary);
            margin-bottom: 8px;
            font-size: 0.9rem;
        }
        .footer-col a:hover {
            color: var(--accent-lime);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-badges {
            display: flex;
            gap: 12px;
        }
        .footer-badge {
            background: rgba(0, 240, 255, 0.08);
            padding: 4px 12px;
            border-radius: 20px;
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
        }
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 52px;
            height: 52px;
            border-radius: 50px;
            background: rgba(0,0,0,0.65);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.55);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.5rem;
            transition: all 0.25s;
            opacity: 0.7;
        }
        .fab-left::before {
            content: '';
            position: absolute;
            top: -2px; left: -2px; right: -2px; bottom: -2px;
            border-radius: 50px;
            background: linear-gradient(135deg, #00F0FF, #CCFF00);
            z-index: -1;
        }
        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.8);
        }