/* roulang page: index */
/* ===== Design Variables - Cyber-Neon Arcade (Style B + Theme 5) ===== */
        :root {
            --bg-primary: #0F0C20;
            --bg-secondary: #0B1A30;
            --bg-card: rgba(15, 12, 32, 0.65);
            --bg-glass: rgba(11, 26, 48, 0.7);
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --accent-yellow: #FFFF00;
            --text-primary: #FFFFFF;
            --text-secondary: #A6ACAF;
            --text-muted: #6B7280;
            --border-neon: rgba(0, 240, 255, 0.3);
            --border-card: rgba(204, 255, 0, 0.15);
            --shadow-neon: 0 0 20px rgba(0, 240, 255, 0.25);
            --shadow-lime: 0 0 15px rgba(204, 255, 0, 0.2);
            --shadow-pink: 0 0 18px rgba(255, 0, 127, 0.3);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: var(--font-heading);
            background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            overflow-x: hidden;
        }
        
        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: 
                radial-gradient(circle at 25% 25%, rgba(0, 240, 255, 0.03) 0%, transparent 50%),
                radial-gradient(circle at 75% 75%, rgba(204, 255, 0, 0.03) 0%, transparent 50%),
                repeating-linear-gradient(0deg, rgba(0, 240, 255, 0.02) 0px, rgba(0, 240, 255, 0.02) 1px, transparent 1px, transparent 40px),
                repeating-linear-gradient(90deg, rgba(0, 240, 255, 0.02) 0px, rgba(0, 240, 255, 0.02) 1px, transparent 1px, transparent 40px);
            pointer-events: none;
            z-index: 0;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: var(--transition-fast);
        }
        
        a:hover {
            color: var(--accent-lime);
            text-shadow: 0 0 8px rgba(204, 255, 0, 0.5);
        }
        
        button, .btn {
            cursor: pointer;
            border: none;
            outline: none;
            transition: var(--transition-smooth);
        }
        
        /* ===== Layout Containers ===== */
        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }
        
        .section-padding {
            padding: 80px 0;
        }
        
        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(15, 12, 32, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-neon);
            transition: var(--transition-smooth);
        }
        
        .site-header.scrolled {
            background: rgba(15, 12, 32, 0.95);
            box-shadow: 0 4px 30px rgba(0, 240, 255, 0.15);
        }
        
        .navbar-brand-custom {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
            text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
        }
        
        .navbar-brand-custom:hover {
            color: var(--accent-lime);
            text-shadow: 0 0 15px rgba(204, 255, 0, 0.6);
        }
        
        .nav-link-custom {
            color: var(--text-secondary) !important;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.6rem 1.2rem !important;
            position: relative;
            letter-spacing: 0.3px;
        }
        
        .nav-link-custom::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-lime));
            transition: width 0.3s ease;
        }
        
        .nav-link-custom:hover,
        .nav-link-custom.active {
            color: var(--accent-cyan) !important;
        }
        
        .nav-link-custom:hover::after,
        .nav-link-custom.active::after {
            width: 70%;
        }
        
        .btn-login {
            background: transparent;
            color: var(--accent-cyan);
            border: 1px solid var(--accent-cyan);
            padding: 8px 20px;
            border-radius: 25px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition-smooth);
        }
        
        .btn-login:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
            color: var(--accent-cyan);
        }
        
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-cyan), #0099FF);
            color: #000;
            padding: 8px 24px;
            border-radius: 25px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            transition: var(--transition-smooth);
        }
        
        .btn-signup:hover {
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            box-shadow: 0 0 30px rgba(204, 255, 0, 0.5);
            transform: translateY(-2px);
            color: #000;
        }
        
        /* ===== Hero Section - Promotion Visual ===== */
        .hero-promo {
            padding-top: 140px;
            padding-bottom: 80px;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
        }
        
        .hero-promo::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(11, 26, 48, 0.92) 30%, rgba(15, 12, 32, 0.85) 70%);
            z-index: 1;
        }
        
        .hero-promo .container-custom {
            position: relative;
            z-index: 2;
        }
        
        .badge-explosion {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent-pink), #D5006D);
            color: #fff;
            padding: 10px 24px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.95rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            box-shadow: 0 0 25px rgba(255, 0, 127, 0.5);
            animation: pulse-badge 2s ease-in-out infinite;
            margin-bottom: 24px;
        }
        
        @keyframes pulse-badge {
            0%, 100% { box-shadow: 0 0 25px rgba(255, 0, 127, 0.5); }
            50% { box-shadow: 0 0 40px rgba(255, 0, 127, 0.8); }
        }
        
        .hero-title {
            font-size: clamp(2.5rem, 5vw, 4rem);
            font-weight: 900;
            line-height: 1.15;
            color: var(--text-primary);
            text-shadow: 0 0 30px rgba(0, 240, 255, 0.4);
        }
        
        .hero-title .highlight {
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .hero-desc {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 650px;
        }
        
        .btn-hero-primary {
            background: linear-gradient(135deg, var(--accent-cyan), #0099FF);
            color: #000;
            padding: 16px 40px;
            border-radius: 40px;
            font-weight: 800;
            font-size: 1.1rem;
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.5);
            transition: var(--transition-smooth);
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        
        .btn-hero-primary:hover {
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            box-shadow: 0 0 45px rgba(204, 255, 0, 0.6);
            transform: translateY(-3px);
            color: #000;
        }
        
        .btn-hero-outline {
            background: transparent;
            color: var(--accent-cyan);
            border: 2px solid var(--accent-cyan);
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition-smooth);
        }
        
        .btn-hero-outline:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.4);
            color: var(--accent-cyan);
        }
        
        .hero-stats {
            display: flex;
            gap: 36px;
            flex-wrap: wrap;
        }
        
        .stat-item {
            text-align: left;
        }
        
        .stat-number {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--accent-cyan);
            text-shadow: 0 0 10px rgba(0, 240, 255, 0.4);
        }
        
        .stat-label {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-top: 4px;
        }
        
        /* ===== Section: New Product Highlights ===== */
        .new-highlights {
            background: rgba(11, 26, 48, 0.5);
            backdrop-filter: blur(10px);
        }
        
        .section-label {
            display: inline-block;
            color: var(--accent-lime);
            font-weight: 700;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 12px;
        }
        
        .section-title {
            font-size: clamp(1.8rem, 3vw, 2.6rem);
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        
        .section-desc {
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 700px;
        }
        
        .highlight-card {
            background: var(--bg-glass);
            backdrop-filter: blur(20px);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            transition: var(--transition-smooth);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        
        .highlight-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-lime));
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        
        .highlight-card:hover::before {
            opacity: 1;
        }
        
        .highlight-card:hover {
            border-color: rgba(0, 240, 255, 0.5);
            box-shadow: 0 8px 35px rgba(0, 240, 255, 0.15);
            transform: translateY(-4px);
        }
        
        .highlight-card .icon-box {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.15), rgba(204, 255, 0, 0.1));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--accent-cyan);
            margin-bottom: 20px;
        }
        
        .highlight-card h3 {
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--text-primary);
            margin-bottom: 10px;
        }
        
        .highlight-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        
        /* ===== Section: Quick Specs / Parameters ===== */
        .quick-specs {
            background: #0A0E1A;
        }
        
        .spec-table-wrapper {
            background: var(--bg-glass);
            backdrop-filter: blur(15px);
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-lg);
            padding: 40px;
            overflow-x: auto;
        }
        
        .spec-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
        }
        
        .spec-item {
            padding: 20px;
            border-left: 3px solid var(--accent-cyan);
            transition: var(--transition-fast);
        }
        
        .spec-item:hover {
            border-left-color: var(--accent-lime);
            background: rgba(0, 240, 255, 0.03);
        }
        
        .spec-label-text {
            font-size: 0.85rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 6px;
        }
        
        .spec-value {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--accent-cyan);
        }
        
        /* ===== Section: News / Latest Updates ===== */
        .news-section {
            background: var(--bg-primary);
        }
        
        .news-list {
            list-style: none;
            padding: 0;
        }
        
        .news-item {
            background: var(--bg-glass);
            backdrop-filter: blur(15px);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            margin-bottom: 16px;
            transition: var(--transition-smooth);
            display: flex;
            gap: 20px;
            align-items: center;
        }
        
        .news-item:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 4px 20px rgba(0, 240, 255, 0.12);
            transform: translateX(4px);
        }
        
        .news-date-badge {
            background: linear-gradient(135deg, var(--accent-cyan), #0099FF);
            color: #000;
            font-weight: 700;
            font-size: 0.8rem;
            padding: 6px 14px;
            border-radius: 20px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        
        .news-content {
            flex: 1;
        }
        
        .news-item-title {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        
        .news-item-title:hover {
            color: var(--accent-cyan);
        }
        
        .news-item-desc {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin: 0;
        }
        
        .news-sidebar {
            background: var(--bg-glass);
            backdrop-filter: blur(15px);
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-lg);
            padding: 30px;
        }
        
        .sidebar-tag {
            display: inline-block;
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 240, 255, 0.3);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin: 4px;
            transition: var(--transition-fast);
        }
        
        .sidebar-tag:hover {
            background: rgba(0, 240, 255, 0.2);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.3);
        }
        
        /* ===== Section: Event Highlights Wall ===== */
        .event-wall {
            background: #0B1225;
        }
        
        .event-grid-card {
            background: var(--bg-glass);
            backdrop-filter: blur(15px);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition-smooth);
            height: 100%;
        }
        
        .event-grid-card:hover {
            border-color: var(--accent-pink);
            box-shadow: 0 10px 40px rgba(255, 0, 127, 0.2);
            transform: translateY(-6px);
        }
        
        .event-card-body {
            padding: 24px;
        }
        
        .event-card-body h4 {
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        
        .event-card-body p {
            color: var(--text-secondary);
            font-size: 0.92rem;
        }
        
        .btn-event {
            background: linear-gradient(135deg, var(--accent-pink), #D5006D);
            color: #fff;
            padding: 10px 22px;
            border-radius: 25px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 0 18px rgba(255, 0, 127, 0.4);
        }
        
        .btn-event:hover {
            box-shadow: 0 0 30px rgba(255, 0, 127, 0.6);
            transform: translateY(-2px);
            color: #fff;
        }
        
        /* ===== Section: Timeline ===== */
        .timeline-section {
            background: #0A0E1A;
        }
        
        .timeline {
            position: relative;
            padding-left: 36px;
            border-left: 2px solid var(--border-neon);
        }
        
        .timeline-node {
            position: relative;
            margin-bottom: 36px;
            padding-left: 32px;
        }
        
        .timeline-node::before {
            content: '';
            position: absolute;
            left: -45px;
            top: 0;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--accent-cyan);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.6);
        }
        
        .timeline-node.completed::before {
            background: var(--accent-lime);
            box-shadow: 0 0 15px rgba(204, 255, 0, 0.6);
        }
        
        .timeline-date {
            font-size: 0.85rem;
            color: var(--accent-cyan);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 4px;
        }
        
        .timeline-title {
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--text-primary);
        }
        
        .timeline-desc {
            color: var(--text-secondary);
        }
        
        /* ===== Section: Limited-Time Entry ===== */
        .limited-banner {
            background: linear-gradient(135deg, rgba(255, 0, 127, 0.15), rgba(15, 12, 32, 0.95));
            border: 2px solid var(--accent-pink);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .limited-banner::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255, 0, 127, 0.08) 0%, transparent 70%);
            animation: rotate-glow 10s linear infinite;
        }
        
        @keyframes rotate-glow {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }
        
        .countdown-timer {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            margin: 20px 0;
        }
        
        .countdown-block {
            background: rgba(0, 0, 0, 0.5);
            border: 1px solid var(--accent-pink);
            border-radius: var(--radius-sm);
            padding: 16px 20px;
            min-width: 80px;
        }
        
        .countdown-block .number {
            font-size: 2.5rem;
            font-weight: 900;
            color: var(--accent-pink);
            display: block;
        }
        
        .countdown-block .unit {
            font-size: 0.8rem;
            color: var(--text-secondary);
            text-transform: uppercase;
        }
        
        /* ===== Section: FAQ ===== */
        .faq-section {
            background: #0B1A30;
        }
        
        .accordion-faq .accordion-item {
            background: var(--bg-glass);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md) !important;
            margin-bottom: 14px;
            overflow: hidden;
        }
        
        .accordion-faq .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 1.05rem;
            padding: 20px 24px;
            box-shadow: none;
        }
        
        .accordion-faq .accordion-button:not(.collapsed) {
            color: var(--accent-cyan);
            box-shadow: none;
        }
        
        .accordion-faq .accordion-button::after {
            filter: brightness(0) invert(0.7);
        }
        
        .accordion-faq .accordion-body {
            color: var(--text-secondary);
            line-height: 1.7;
            padding: 0 24px 20px;
        }
        
        /* ===== Section: CTA Bottom ===== */
        .cta-float-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(15, 12, 32, 0.95);
            backdrop-filter: blur(20px);
            border-top: 1px solid var(--border-neon);
            padding: 14px 0;
            z-index: 1040;
            display: none;
        }
        
        .cta-float-bar.active {
            display: block;
        }
        
        /* ===== FAB (Left Floating Action Button) ===== */
        .fab-container {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 1080;
        }
        
        .fab-btn {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(11, 26, 48, 0.7);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-cyan);
            cursor: pointer;
            position: relative;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            animation: float-breathe 3s ease-in-out infinite;
            transition: var(--transition-smooth);
        }
        
        .fab-btn::before {
            content: '';
            position: absolute;
            inset: -3px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            z-index: -1;
            opacity: 0.6;
        }
        
        @keyframes float-breathe {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
        }
        
        .fab-btn:hover {
            width: 60px;
            height: 60px;
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.7);
            color: var(--accent-lime);
        }
        
        .fab-notification {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 14px;
            height: 14px;
            background: var(--accent-pink);
            border-radius: 50%;
            border: 2px solid #0F0C20;
            animation: blink-dot 1.2s ease-in-out infinite;
        }
        
        @keyframes blink-dot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        
        /* ===== Footer ===== */
        .site-footer {
            background: #070A14;
            border-top: 1px solid var(--border-neon);
            padding: 50px 0 30px;
        }
        
        .footer-brand {
            font-weight: 800;
            font-size: 1.3rem;
            color: var(--accent-cyan);
            text-shadow: 0 0 8px rgba(0, 240, 255, 0.4);
        }
        
        .footer-links a {
            color: var(--text-secondary);
            margin-right: 20px;
            font-size: 0.9rem;
        }
        
        .footer-links a:hover {
            color: var(--accent-cyan);
        }
        
        .footer-bottom {
            color: var(--text-muted);
            font-size: 0.85rem;
            margin-top: 24px;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.05);
        }
        
        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-title { font-size: 2.2rem; }
            .section-padding { padding: 60px 0; }
            .hero-stats { gap: 20px; }
        }
        
        @media (max-width: 768px) {
            .container-custom { padding: 0 16px; }
            .hero-promo { padding-top: 120px; min-height: auto; }
            .hero-title { font-size: 1.9rem; }
            .hero-desc { font-size: 1rem; }
            .btn-hero-primary, .btn-hero-outline { width: 100%; margin-bottom: 8px; }
            .spec-grid { grid-template-columns: 1fr; }
            .news-item { flex-direction: column; align-items: flex-start; }
            .timeline { padding-left: 20px; }
            .timeline-node { padding-left: 20px; }
            .timeline-node::before { left: -29px; }
            .countdown-timer { gap: 8px; }
            .countdown-block { min-width: 60px; padding: 12px 10px; }
            .countdown-block .number { font-size: 1.6rem; }
        }
        
        @media (max-width: 520px) {
            .hero-title { font-size: 1.6rem; }
            .badge-explosion { font-size: 0.8rem; padding: 8px 16px; }
            .spec-table-wrapper { padding: 20px; }
            .limited-banner { padding: 28px 16px; }
        }

/* roulang page: article */
:root {
            --bg-primary: #0F0C20;
            --bg-secondary: #0B1A30;
            --bg-card: rgba(15, 12, 32, 0.65);
            --bg-glass: rgba(11, 26, 48, 0.7);
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --accent-yellow: #FFFF00;
            --text-primary: #FFFFFF;
            --text-secondary: #A6ACAF;
            --text-muted: #6B7280;
            --border-neon: rgba(0, 240, 255, 0.3);
            --border-card: rgba(204, 255, 0, 0.15);
            --shadow-neon: 0 0 20px rgba(0, 240, 255, 0.25);
            --shadow-lime: 0 0 15px rgba(204, 255, 0, 0.2);
            --shadow-pink: 0 0 18px rgba(255, 0, 127, 0.3);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }

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

        body {
            font-family: var(--font-heading);
            background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            overflow-x: hidden;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: 
                radial-gradient(circle at 25% 25%, rgba(0, 240, 255, 0.03) 0%, transparent 50%),
                radial-gradient(circle at 75% 75%, rgba(204, 255, 0, 0.03) 0%, transparent 50%),
                repeating-linear-gradient(0deg, rgba(0, 240, 255, 0.02) 0px, rgba(0, 240, 255, 0.02) 1px, transparent 1px, transparent 40px),
                repeating-linear-gradient(90deg, rgba(0, 240, 255, 0.02) 0px, rgba(0, 240, 255, 0.02) 1px, transparent 1px, transparent 40px);
            pointer-events: none;
            z-index: 0;
        }

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

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

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

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

        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(15, 12, 32, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-neon);
            transition: var(--transition-smooth);
        }

        .site-header.scrolled {
            background: rgba(15, 12, 32, 0.95);
            box-shadow: 0 4px 30px rgba(0, 240, 255, 0.15);
        }

        .navbar-brand-custom {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
            text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
        }

        .navbar-brand-custom:hover {
            color: var(--accent-lime);
            text-shadow: 0 0 15px rgba(204, 255, 0, 0.6);
        }

        .nav-link-custom {
            color: var(--text-secondary) !important;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.6rem 1.2rem !important;
            position: relative;
            letter-spacing: 0.3px;
        }

        .nav-link-custom::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-lime));
            transition: width 0.3s ease;
        }

        .nav-link-custom:hover,
        .nav-link-custom.active {
            color: var(--accent-cyan) !important;
        }

        .nav-link-custom:hover::after,
        .nav-link-custom.active::after {
            width: 70%;
        }

        .btn-login {
            background: transparent;
            color: var(--accent-cyan);
            border: 1px solid var(--accent-cyan);
            padding: 8px 20px;
            border-radius: 25px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition-smooth);
        }

        .btn-login:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
            color: var(--accent-cyan);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-cyan), #0099FF);
            color: #000;
            padding: 8px 24px;
            border-radius: 25px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            transition: var(--transition-smooth);
        }

        .btn-signup:hover {
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            box-shadow: 0 0 30px rgba(204, 255, 0, 0.5);
            transform: translateY(-2px);
            color: #000;
        }

        .article-banner {
            padding: 140px 0 60px;
            position: relative;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
        }

        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 12, 32, 0.85) 0%, rgba(11, 26, 48, 0.95) 100%);
            z-index: 0;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            align-items: center;
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }

        .article-meta .category-badge {
            background: rgba(0, 240, 255, 0.15);
            color: var(--accent-cyan);
            padding: 4px 16px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.85rem;
            border: 1px solid rgba(0, 240, 255, 0.3);
        }

        .article-title {
            font-size: 2.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 20px;
            line-height: 1.3;
            position: relative;
            z-index: 1;
        }

        .article-content-wrapper {
            position: relative;
            z-index: 1;
            margin-top: -30px;
            padding-bottom: 80px;
        }

        .article-main-card {
            background: var(--bg-glass);
            backdrop-filter: blur(15px);
            -webkit-backdrop-filter: blur(15px);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-neon);
            padding: 50px 40px;
            box-shadow: var(--shadow-neon);
        }

        .article-body {
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.8;
            word-wrap: break-word;
        }

        .article-body h2 {
            color: var(--accent-cyan);
            font-weight: 700;
            font-size: 1.8rem;
            margin: 36px 0 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--border-neon);
        }

        .article-body h3 {
            color: var(--accent-lime);
            font-weight: 700;
            font-size: 1.4rem;
            margin: 28px 0 12px;
        }

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

        .article-body img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
            border: 1px solid var(--border-card);
        }

        .article-body ul,
        .article-body ol {
            margin-bottom: 20px;
            padding-left: 24px;
        }

        .article-body li {
            margin-bottom: 10px;
            position: relative;
        }

        .article-body ul li::marker {
            color: var(--accent-lime);
        }

        .article-body blockquote {
            background: rgba(0, 240, 255, 0.05);
            border-left: 4px solid var(--accent-cyan);
            padding: 20px 24px;
            margin: 28px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-primary);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.1);
        }

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

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

        .cta-inline-box {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.1), rgba(204, 255, 0, 0.08));
            border: 2px solid var(--border-neon);
            border-radius: var(--radius-md);
            padding: 30px;
            margin: 36px 0;
            text-align: center;
            box-shadow: var(--shadow-neon);
        }

        .cta-inline-box h3 {
            color: var(--accent-cyan);
            margin-bottom: 12px;
            font-weight: 700;
        }

        .cta-inline-box p {
            color: var(--text-secondary);
            margin-bottom: 20px;
        }

        .btn-cta-glow {
            background: linear-gradient(135deg, var(--accent-pink), #FF4500);
            color: #FFF;
            padding: 14px 40px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: var(--shadow-pink);
            transition: var(--transition-smooth);
            display: inline-block;
        }

        .btn-cta-glow:hover {
            transform: translateY(-3px);
            box-shadow: 0 0 35px rgba(255, 0, 127, 0.5);
            color: #FFF;
        }

        .not-found-section {
            min-height: 400px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 80px 0;
        }

        .not-found-section h2 {
            color: var(--accent-cyan);
            font-size: 2rem;
            margin-bottom: 16px;
        }

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

        .not-found-section .btn-back {
            background: var(--accent-cyan);
            color: #000;
            padding: 12px 30px;
            border-radius: 25px;
            font-weight: 700;
            transition: var(--transition-smooth);
        }

        .not-found-section .btn-back:hover {
            background: var(--accent-lime);
            box-shadow: var(--shadow-lime);
            color: #000;
        }

        .share-bar {
            display: flex;
            gap: 12px;
            align-items: center;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border-neon);
            flex-wrap: wrap;
        }

        .share-bar span {
            color: var(--text-secondary);
            font-weight: 600;
        }

        .share-btn {
            width: 42px;
            height: 42px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-primary);
            font-size: 1.1rem;
            transition: var(--transition-smooth);
            border: 1px solid transparent;
        }

        .share-btn:hover {
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.15);
            color: var(--accent-cyan);
            box-shadow: var(--shadow-neon);
        }

        /* Footer */
        .site-footer {
            background: rgba(8, 9, 15, 0.9);
            border-top: 1px solid var(--border-neon);
            padding: 60px 0 30px;
            position: relative;
            z-index: 1;
        }

        .site-footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--accent-cyan);
            text-transform: uppercase;
            display: flex;
            align-items: center;
        }

        .footer-links a {
            color: var(--text-secondary);
            transition: var(--transition-fast);
            font-size: 0.95rem;
        }

        .footer-links a:hover {
            color: var(--accent-lime);
            text-shadow: 0 0 6px rgba(204, 255, 0, 0.4);
            padding-left: 5px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            margin-top: 40px;
            padding-top: 20px;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .fab-float {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 1040;
            width: 56px;
            height: 56px;
            background: rgba(11, 26, 48, 0.7);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.6rem;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
            border: 2px solid transparent;
            background-clip: padding-box;
            transition: var(--transition-smooth);
            cursor: pointer;
            animation: floatPulse 3s ease-in-out infinite;
        }

        .fab-float::before {
            content: '';
            position: absolute;
            inset: -3px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            z-index: -1;
            opacity: 0.6;
        }

        .fab-float:hover {
            transform: scale(1.1);
            box-shadow: 0 0 35px rgba(0, 240, 255, 0.7);
            color: var(--accent-lime);
        }

        @keyframes floatPulse {
            0%, 100% { opacity: 0.8; }
            50% { opacity: 1; }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .article-title {
                font-size: 2.2rem;
            }
            .article-main-card {
                padding: 30px 24px;
            }
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
            .article-banner {
                padding: 120px 0 40px;
            }
            .article-title {
                font-size: 1.8rem;
            }
            .article-main-card {
                padding: 24px 16px;
                border-radius: var(--radius-md);
            }
            .article-body {
                font-size: 0.98rem;
            }
            .article-body h2 {
                font-size: 1.4rem;
            }
            .article-body h3 {
                font-size: 1.2rem;
            }
            .cta-inline-box {
                padding: 20px;
            }
            .btn-cta-glow {
                padding: 12px 28px;
                font-size: 1rem;
            }
            .site-footer {
                padding: 40px 0 20px;
            }
            .fab-float {
                left: 12px;
                bottom: 80px;
                width: 48px;
                height: 48px;
                font-size: 1.3rem;
            }
        }

        @media (max-width: 520px) {
            .article-title {
                font-size: 1.5rem;
            }
            .article-meta {
                gap: 10px;
                font-size: 0.8rem;
            }
            .share-bar {
                justify-content: center;
            }
        }

/* roulang page: category1 */
/* ===== Design Variables - Cyber-Neon Arcade (Style B + Theme 5) ===== */
        :root {
            --bg-primary: #0F0C20;
            --bg-secondary: #0B1A30;
            --bg-card: rgba(15, 12, 32, 0.65);
            --bg-glass: rgba(11, 26, 48, 0.7);
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --accent-yellow: #FFFF00;
            --text-primary: #FFFFFF;
            --text-secondary: #A6ACAF;
            --text-muted: #6B7280;
            --border-neon: rgba(0, 240, 255, 0.3);
            --border-card: rgba(204, 255, 0, 0.15);
            --shadow-neon: 0 0 20px rgba(0, 240, 255, 0.25);
            --shadow-lime: 0 0 15px rgba(204, 255, 0, 0.2);
            --shadow-pink: 0 0 18px rgba(255, 0, 127, 0.3);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }

        * {
            box-sizing: border-box;
        }

        body {
            font-family: var(--font-heading);
            background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: 
                radial-gradient(circle at 25% 25%, rgba(0, 240, 255, 0.03) 0%, transparent 50%),
                radial-gradient(circle at 75% 75%, rgba(204, 255, 0, 0.03) 0%, transparent 50%),
                repeating-linear-gradient(0deg, rgba(0, 240, 255, 0.02) 0px, rgba(0, 240, 255, 0.02) 1px, transparent 1px, transparent 40px),
                repeating-linear-gradient(90deg, rgba(0, 240, 255, 0.02) 0px, rgba(0, 240, 255, 0.02) 1px, transparent 1px, transparent 40px);
            pointer-events: none;
            z-index: 0;
        }

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

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

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

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

        /* ===== Layout Containers ===== */
        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

        .section-padding {
            padding: 80px 0;
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(15, 12, 32, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-neon);
            transition: var(--transition-smooth);
        }

        .site-header.scrolled {
            background: rgba(15, 12, 32, 0.95);
            box-shadow: 0 4px 30px rgba(0, 240, 255, 0.15);
        }

        .navbar-brand-custom {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
            text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
        }

        .navbar-brand-custom:hover {
            color: var(--accent-lime);
            text-shadow: 0 0 15px rgba(204, 255, 0, 0.6);
        }

        .nav-link-custom {
            color: var(--text-secondary) !important;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.6rem 1.2rem !important;
            position: relative;
            letter-spacing: 0.3px;
        }

        .nav-link-custom::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-lime));
            transition: width 0.3s ease;
        }

        .nav-link-custom:hover,
        .nav-link-custom.active {
            color: var(--accent-cyan) !important;
        }

        .nav-link-custom:hover::after,
        .nav-link-custom.active::after {
            width: 70%;
        }

        .btn-login {
            background: transparent;
            color: var(--accent-cyan);
            border: 1px solid var(--accent-cyan);
            padding: 8px 20px;
            border-radius: 25px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition-smooth);
        }

        .btn-login:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
            color: var(--accent-cyan);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-cyan), #0099FF);
            color: #000;
            padding: 8px 24px;
            border-radius: 25px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            transition: var(--transition-smooth);
        }

        .btn-signup:hover {
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            box-shadow: 0 0 30px rgba(204, 255, 0, 0.5);
            transform: translateY(-2px);
            color: #000;
        }

        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: rgba(15, 12, 32, 0.98);
                border-radius: var(--radius-md);
                padding: 1rem;
                margin-top: 10px;
                border: 1px solid var(--border-neon);
            }
        }

        /* ===== Page Hero - Full Width Video ===== */
        .page-hero {
            position: relative;
            min-height: 500px;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            margin-top: 76px;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 26, 48, 0.85) 0%, rgba(15, 12, 32, 0.95) 100%);
            z-index: 1;
        }

        .page-hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            padding: 40px 20px;
        }

        .hero-icon-play {
            width: 90px;
            height: 90px;
            border-radius: 50%;
            background: rgba(0, 240, 255, 0.15);
            border: 2px solid var(--accent-cyan);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: var(--accent-cyan);
            cursor: pointer;
            transition: var(--transition-smooth);
            margin-bottom: 30px;
        }

        .hero-icon-play:hover {
            background: var(--accent-cyan);
            color: #000;
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.6);
            transform: scale(1.08);
        }

        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-cyan), #FFF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 1rem;
        }

        .page-hero p {
            font-size: 1.2rem;
            color: var(--text-secondary);
            margin-bottom: 2rem;
            line-height: 1.7;
        }

        .btn-hero-cta {
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            color: #000;
            padding: 14px 40px;
            border-radius: 30px;
            font-weight: 800;
            font-size: 1.1rem;
            box-shadow: 0 0 30px rgba(204, 255, 0, 0.5);
            display: inline-block;
            transition: var(--transition-smooth);
        }

        .btn-hero-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 0 50px rgba(204, 255, 0, 0.7);
            color: #000;
        }

        /* ===== Glass Card Components ===== */
        .glass-card {
            background: var(--bg-glass);
            backdrop-filter: blur(15px);
            -webkit-backdrop-filter: blur(15px);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(0, 240, 255, 0.2);
            padding: 30px;
            transition: var(--transition-smooth);
            height: 100%;
        }

        .glass-card:hover {
            border-color: var(--accent-lime);
            box-shadow: 0 8px 32px rgba(0, 240, 255, 0.25);
            transform: translateY(-5px);
        }

        .badge-trust {
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            color: #000;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            display: inline-block;
            margin-bottom: 15px;
        }

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

        .feature-list li {
            padding: 10px 0;
            border-bottom: 1px solid rgba(255,255,255,0.05);
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--text-secondary);
        }

        .feature-list li i {
            color: var(--accent-lime);
            margin-top: 3px;
            flex-shrink: 0;
        }

        .platform-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 240, 255, 0.1);
            padding: 8px 16px;
            border-radius: 20px;
            font-weight: 700;
            color: var(--accent-cyan);
            font-size: 0.9rem;
        }

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

        /* ===== Process Steps ===== */
        .steps-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 30px;
        }

        .step-card {
            text-align: center;
            padding: 40px 25px;
            background: var(--bg-glass);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(204, 255, 0, 0.15);
            transition: var(--transition-smooth);
            position: relative;
        }

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

        .step-number {
            width: 55px;
            height: 55px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), #0099FF);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.5rem;
            color: #000;
            margin-bottom: 20px;
        }

        /* ===== FAQ Section ===== */
        .faq-item {
            background: var(--bg-glass);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: var(--radius-md);
            margin-bottom: 15px;
            overflow: hidden;
            transition: var(--transition-smooth);
        }

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

        .faq-question {
            padding: 20px 25px;
            font-weight: 700;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1.05rem;
        }

        .faq-answer {
            padding: 0 25px 20px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }

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

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

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

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

        .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--accent-cyan);
        }

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

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

        .footer-bottom {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.08);
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* ===== Responsive ===== */
        @media (max-width: 768px) {
            .page-hero h1 {
                font-size: 1.9rem;
            }
            .section-padding {
                padding: 50px 0;
            }
            .glass-card {
                padding: 20px;
            }
        }

        @media (max-width: 520px) {
            .container-custom {
                padding: 0 16px;
            }
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .page-hero {
                min-height: 400px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0F0C20;
            --bg-secondary: #0B1A30;
            --bg-card: rgba(15, 12, 32, 0.65);
            --bg-glass: rgba(11, 26, 48, 0.7);
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --accent-yellow: #FFFF00;
            --text-primary: #FFFFFF;
            --text-secondary: #A6ACAF;
            --text-muted: #6B7280;
            --border-neon: rgba(0, 240, 255, 0.3);
            --border-card: rgba(204, 255, 0, 0.15);
            --shadow-neon: 0 0 20px rgba(0, 240, 255, 0.25);
            --shadow-lime: 0 0 15px rgba(204, 255, 0, 0.2);
            --shadow-pink: 0 0 18px rgba(255, 0, 127, 0.3);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }

        * {
            box-sizing: border-box;
        }

        body {
            font-family: var(--font-heading);
            background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            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(circle at 25% 25%, rgba(0, 240, 255, 0.03) 0%, transparent 50%),
                radial-gradient(circle at 75% 75%, rgba(204, 255, 0, 0.03) 0%, transparent 50%),
                repeating-linear-gradient(0deg, rgba(0, 240, 255, 0.02) 0px, rgba(0, 240, 255, 0.02) 1px, transparent 1px, transparent 40px),
                repeating-linear-gradient(90deg, rgba(0, 240, 255, 0.02) 0px, rgba(0, 240, 255, 0.02) 1px, transparent 1px, transparent 40px);
            pointer-events: none;
            z-index: 0;
        }

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

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

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

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

        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

        .section-padding {
            padding: 80px 0;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(15, 12, 32, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-neon);
        }

        .site-header.scrolled {
            background: rgba(15, 12, 32, 0.95);
            box-shadow: 0 4px 30px rgba(0, 240, 255, 0.15);
        }

        .navbar-brand-custom {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
            text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
        }

        .navbar-brand-custom:hover {
            color: var(--accent-lime);
            text-shadow: 0 0 15px rgba(204, 255, 0, 0.6);
        }

        .nav-link-custom {
            color: var(--text-secondary) !important;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.6rem 1.2rem !important;
            position: relative;
            letter-spacing: 0.3px;
        }

        .nav-link-custom::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-lime));
            transition: width 0.3s ease;
        }

        .nav-link-custom:hover,
        .nav-link-custom.active {
            color: var(--accent-cyan) !important;
        }

        .nav-link-custom:hover::after,
        .nav-link-custom.active::after {
            width: 70%;
        }

        .btn-login {
            background: transparent;
            color: var(--accent-cyan);
            border: 1px solid var(--accent-cyan);
            padding: 8px 20px;
            border-radius: 25px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition-smooth);
        }

        .btn-login:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
            color: var(--accent-cyan);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-cyan), #0099FF);
            color: #000;
            padding: 8px 24px;
            border-radius: 25px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            transition: var(--transition-smooth);
        }

        .btn-signup:hover {
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            box-shadow: 0 0 30px rgba(204, 255, 0, 0.5);
            transform: translateY(-2px);
        }

        .hero-section {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            background: 
                linear-gradient(135deg, rgba(15, 12, 32, 0.9) 0%, rgba(11, 26, 48, 0.85) 100%),
                url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            background-attachment: fixed;
        }

        .hero-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle at 50% 50%, rgba(0, 240, 255, 0.1) 0%, transparent 70%);
        }

        .countdown-bar {
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(15px);
            -webkit-backdrop-filter: blur(15px);
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-md);
            padding: 16px 24px;
            display: inline-flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .countdown-item {
            text-align: center;
            min-width: 70px;
        }

        .countdown-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-lime);
            text-shadow: 0 0 15px rgba(204, 255, 0, 0.6);
            line-height: 1;
        }

        .countdown-label {
            font-size: 0.8rem;
            color: var(--text-secondary);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-top: 4px;
        }

        .glass-card {
            background: var(--bg-glass);
            backdrop-filter: blur(15px);
            -webkit-backdrop-filter: blur(15px);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            transition: var(--transition-smooth);
        }

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

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

        .game-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-neon);
            transform: scale(1.03);
        }

        .game-card .badge-hot {
            position: absolute;
            top: 12px;
            right: 12px;
            background: var(--accent-pink);
            color: #fff;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 700;
            box-shadow: var(--shadow-pink);
            z-index: 2;
        }

        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), #0099FF);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: #000;
            box-shadow: var(--shadow-neon);
        }

        .testimonial-card {
            background: var(--bg-glass);
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-md);
            padding: 24px;
            position: relative;
        }

        .testimonial-card::before {
            content: '"';
            position: absolute;
            top: -15px;
            left: 20px;
            font-size: 4rem;
            color: var(--accent-cyan);
            opacity: 0.3;
            font-family: serif;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-sm);
            padding: 20px;
            margin-bottom: 16px;
            transition: var(--transition-smooth);
        }

        .faq-item:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 10px rgba(0, 240, 255, 0.15);
        }

        .btn-primary-custom {
            background: linear-gradient(135deg, var(--accent-cyan), #0099FF);
            color: #000;
            padding: 14px 36px;
            border-radius: 30px;
            font-weight: 800;
            font-size: 1rem;
            box-shadow: var(--shadow-neon);
            letter-spacing: 0.5px;
        }

        .btn-primary-custom:hover {
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            box-shadow: 0 0 35px rgba(204, 255, 0, 0.6);
            transform: translateY(-2px);
        }

        .btn-outline-custom {
            background: transparent;
            color: var(--accent-cyan);
            border: 2px solid var(--accent-cyan);
            padding: 14px 36px;
            border-radius: 30px;
            font-weight: 800;
            font-size: 1rem;
        }

        .btn-outline-custom:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.3);
            color: var(--accent-cyan);
        }

        .site-footer {
            background: rgba(15, 12, 32, 0.95);
            border-top: 1px solid var(--border-neon);
            padding: 50px 0 30px;
            margin-top: 40px;
        }

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

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            margin-top: 30px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .fab-left {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 1050;
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, var(--accent-pink), var(--accent-cyan));
            border-radius: 50%;
            box-shadow: 0 0 20px rgba(255, 0, 127, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: #fff;
            cursor: pointer;
            animation: floatFab 3s ease-in-out infinite;
        }

        @keyframes floatFab {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-10px); }
        }

        .fab-left:hover {
            box-shadow: 0 0 35px rgba(255, 0, 127, 0.7);
            transform: scale(1.1);
        }

        @media (max-width: 992px) {
            .hero-section {
                min-height: 70vh;
                text-align: center;
            }
            .countdown-bar {
                justify-content: center;
            }
            .section-padding {
                padding: 50px 0;
            }
            .navbar-collapse {
                background: rgba(15, 12, 32, 0.98);
                border-radius: var(--radius-md);
                padding: 16px;
                margin-top: 10px;
            }
        }

        @media (max-width: 576px) {
            .countdown-number {
                font-size: 1.5rem;
            }
            .countdown-item {
                min-width: 55px;
            }
            .container-custom {
                padding: 0 16px;
            }
        }

/* roulang page: category3 */
/* ===== Design Variables - Cyber-Neon Arcade (Style B + Theme 5) ===== */
    :root {
        --bg-primary: #0F0C20;
        --bg-secondary: #0B1A30;
        --bg-card: rgba(15, 12, 32, 0.65);
        --bg-glass: rgba(11, 26, 48, 0.7);
        --accent-lime: #CCFF00;
        --accent-cyan: #00F0FF;
        --accent-pink: #FF007F;
        --accent-yellow: #FFFF00;
        --text-primary: #FFFFFF;
        --text-secondary: #A6ACAF;
        --text-muted: #6B7280;
        --border-neon: rgba(0, 240, 255, 0.3);
        --border-card: rgba(204, 255, 0, 0.15);
        --shadow-neon: 0 0 20px rgba(0, 240, 255, 0.25);
        --shadow-lime: 0 0 15px rgba(204, 255, 0, 0.2);
        --shadow-pink: 0 0 18px rgba(255, 0, 127, 0.3);
        --radius-sm: 10px;
        --radius-md: 16px;
        --radius-lg: 24px;
        --radius-xl: 32px;
        --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
        --transition-smooth: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        --font-heading: 'Segoe UI', system-ui, -apple-system, sans-serif;
    }
    
    * {
        box-sizing: border-box;
    }
    
    body {
        font-family: var(--font-heading);
        background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
        color: var(--text-primary);
        line-height: 1.6;
        min-height: 100vh;
        overflow-x: hidden;
        position: relative;
    }
    
    body::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: 
            radial-gradient(circle at 25% 25%, rgba(0, 240, 255, 0.03) 0%, transparent 50%),
            radial-gradient(circle at 75% 75%, rgba(204, 255, 0, 0.03) 0%, transparent 50%),
            repeating-linear-gradient(0deg, rgba(0, 240, 255, 0.02) 0px, rgba(0, 240, 255, 0.02) 1px, transparent 1px, transparent 40px),
            repeating-linear-gradient(90deg, rgba(0, 240, 255, 0.02) 0px, rgba(0, 240, 255, 0.02) 1px, transparent 1px, transparent 40px);
        pointer-events: none;
        z-index: 0;
    }
    
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    
    a {
        color: var(--accent-cyan);
        text-decoration: none;
        transition: var(--transition-fast);
    }
    
    a:hover {
        color: var(--accent-lime);
        text-shadow: 0 0 8px rgba(204, 255, 0, 0.5);
    }
    
    button, .btn {
        cursor: pointer;
        border: none;
        outline: none;
        transition: var(--transition-smooth);
    }
    
    /* ===== Layout Containers ===== */
    .container-custom {
        max-width: 1280px;
        margin: 0 auto;
        padding: 0 24px;
        position: relative;
        z-index: 1;
    }
    
    .section-padding {
        padding: 80px 0;
    }
    
    /* ===== Header & Navigation ===== */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1050;
        background: rgba(15, 12, 32, 0.85);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--border-neon);
        transition: var(--transition-smooth);
    }
    
    .site-header.scrolled {
        background: rgba(15, 12, 32, 0.95);
        box-shadow: 0 4px 30px rgba(0, 240, 255, 0.15);
    }
    
    .navbar-brand-custom {
        font-size: 1.25rem;
        font-weight: 800;
        color: var(--accent-cyan);
        text-transform: uppercase;
        letter-spacing: 1px;
        display: flex;
        align-items: center;
        gap: 10px;
        text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
    }
    
    .navbar-brand-custom:hover {
        color: var(--accent-lime);
        text-shadow: 0 0 15px rgba(204, 255, 0, 0.6);
    }
    
    .nav-link-custom {
        color: var(--text-secondary) !important;
        font-weight: 600;
        font-size: 0.95rem;
        padding: 0.6rem 1.2rem !important;
        position: relative;
        letter-spacing: 0.3px;
    }
    
    .nav-link-custom::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 0;
        height: 2px;
        background: linear-gradient(90deg, var(--accent-cyan), var(--accent-lime));
        transition: width 0.3s ease;
    }
    
    .nav-link-custom:hover,
    .nav-link-custom.active {
        color: var(--accent-cyan) !important;
    }
    
    .nav-link-custom:hover::after,
    .nav-link-custom.active::after {
        width: 70%;
    }
    
    .btn-login {
        background: transparent;
        color: var(--accent-cyan);
        border: 1px solid var(--accent-cyan);
        padding: 8px 20px;
        border-radius: 25px;
        font-weight: 700;
        font-size: 0.9rem;
        transition: var(--transition-smooth);
    }
    
    .btn-login:hover {
        background: rgba(0, 240, 255, 0.1);
        box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
        color: var(--accent-cyan);
    }
    
    .btn-signup {
        background: linear-gradient(135deg, var(--accent-cyan), #0099FF);
        color: #000;
        padding: 8px 24px;
        border-radius: 25px;
        font-weight: 700;
        font-size: 0.9rem;
        box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
        transition: var(--transition-smooth);
    }
    
    .btn-signup:hover {
        background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
        box-shadow: 0 0 30px rgba(204, 255, 0, 0.5);
        transform: translateY(-2px);
    }
    
    /* ===== Hero Section ===== */
    .hero-section {
        padding: 160px 0 100px;
        position: relative;
        background: linear-gradient(180deg, rgba(15,12,32,0.4) 0%, rgba(11,26,48,0.6) 100%), url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
        background-attachment: fixed;
    }
    
    .hero-section::before {
        content: '';
        position: absolute;
        top: 0; left: 0;
        width: 100%; height: 100%;
        background: radial-gradient(circle at 50% 50%, rgba(204,255,0,0.08) 0%, transparent 70%);
        pointer-events: none;
    }
    
    .hero-title {
        font-size: 3rem;
        font-weight: 900;
        background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        line-height: 1.2;
        margin-bottom: 1.5rem;
    }
    
    .hero-desc {
        font-size: 1.15rem;
        color: var(--text-secondary);
        max-width: 700px;
        line-height: 1.7;
    }
    
    .btn-hero {
        display: inline-block;
        background: linear-gradient(135deg, var(--accent-pink), #FF1493);
        color: #fff;
        padding: 14px 40px;
        border-radius: 30px;
        font-weight: 700;
        font-size: 1.05rem;
        box-shadow: 0 0 25px rgba(255,0,127,0.5);
        letter-spacing: 0.5px;
    }
    
    .btn-hero:hover {
        box-shadow: 0 0 40px rgba(255,0,127,0.8);
        transform: translateY(-3px);
        color: #fff;
    }
    
    /* ===== Glass Card ===== */
    .card-glass {
        background: var(--bg-glass);
        backdrop-filter: blur(15px);
        -webkit-backdrop-filter: blur(15px);
        border: 1px solid var(--border-card);
        border-radius: var(--radius-lg);
        padding: 30px;
        transition: var(--transition-smooth);
    }
    
    .card-glass:hover {
        border-color: var(--accent-cyan);
        box-shadow: var(--shadow-neon);
        transform: translateY(-4px);
    }
    
    /* ===== Giftcode Card ===== */
    .giftcode-card {
        background: linear-gradient(145deg, rgba(15,12,32,0.9), rgba(11,26,48,0.8));
        border: 1px solid var(--border-card);
        border-radius: var(--radius-md);
        padding: 20px;
        position: relative;
        overflow: hidden;
        transition: var(--transition-smooth);
    }
    
    .giftcode-card::before {
        content: '';
        position: absolute;
        top: -50%;
        right: -50%;
        width: 100%;
        height: 100%;
        background: radial-gradient(circle, rgba(204,255,0,0.08) 0%, transparent 70%);
        pointer-events: none;
    }
    
    .giftcode-card:hover {
        border-color: var(--accent-lime);
        box-shadow: var(--shadow-lime);
        transform: translateY(-6px);
    }
    
    .code-box {
        background: rgba(0, 0, 0, 0.5);
        border: 1px dashed var(--accent-cyan);
        border-radius: var(--radius-sm);
        padding: 12px 20px;
        font-family: 'Courier New', monospace;
        font-size: 1.2rem;
        color: var(--accent-lime);
        letter-spacing: 2px;
        word-break: break-all;
        user-select: all;
    }
    
    .badge-hot {
        background: linear-gradient(135deg, var(--accent-pink), #FF1493);
        color: #fff;
        padding: 4px 12px;
        border-radius: 20px;
        font-size: 0.8rem;
        font-weight: 700;
    }
    
    /* ===== Steps ===== */
    .step-item {
        background: var(--bg-card);
        border-left: 4px solid var(--accent-cyan);
        border-radius: var(--radius-md);
        padding: 24px;
        transition: var(--transition-smooth);
    }
    
    .step-item:hover {
        border-left-color: var(--accent-lime);
        box-shadow: var(--shadow-neon);
        transform: translateX(4px);
    }
    
    .step-number {
        font-size: 2.5rem;
        font-weight: 900;
        color: var(--accent-cyan);
        line-height: 1;
    }
    
    /* ===== FAQ ===== */
    .faq-item {
        background: var(--bg-card);
        border: 1px solid var(--border-card);
        border-radius: var(--radius-md);
        margin-bottom: 16px;
        overflow: hidden;
        transition: var(--transition-smooth);
    }
    
    .faq-question {
        padding: 20px 24px;
        cursor: pointer;
        font-weight: 700;
        display: flex;
        justify-content: space-between;
        align-items: center;
        color: var(--text-primary);
    }
    
    .faq-question i {
        color: var(--accent-cyan);
        transition: transform 0.3s ease;
    }
    
    .faq-answer {
        padding: 0 24px 20px;
        color: var(--text-secondary);
        display: none;
    }
    
    .faq-item.active .faq-answer {
        display: block;
    }
    
    .faq-item.active .faq-question i {
        transform: rotate(180deg);
    }
    
    /* ===== CTA Section ===== */
    .cta-section {
        background: linear-gradient(135deg, rgba(204,255,0,0.05), rgba(0,240,255,0.05));
        border-top: 1px solid var(--border-neon);
        border-bottom: 1px solid var(--border-neon);
    }
    
    /* ===== Bottom CTA Bar ===== */
    .bottom-cta {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: rgba(15,12,32,0.95);
        backdrop-filter: blur(20px);
        border-top: 1px solid var(--border-neon);
        z-index: 1040;
        padding: 16px 24px;
        transform: translateY(100%);
        transition: transform 0.3s ease;
    }
    
    .bottom-cta.visible {
        transform: translateY(0);
    }
    
    /* ===== Footer ===== */
    .site-footer {
        background: rgba(15,12,32,0.95);
        border-top: 1px solid var(--border-neon);
        padding: 60px 0 30px;
        margin-top: 0;
    }
    
    .footer-brand {
        font-size: 1.3rem;
        font-weight: 800;
        color: var(--accent-cyan);
    }
    
    .footer-links a {
        color: var(--text-secondary);
        transition: var(--transition-fast);
    }
    
    .footer-links a:hover {
        color: var(--accent-lime);
    }
    
    .footer-bottom {
        margin-top: 40px;
        padding-top: 20px;
        border-top: 1px solid var(--border-card);
        color: var(--text-muted);
        font-size: 0.85rem;
    }
    
    /* FAB */
    .fab-floating {
        position: fixed;
        left: 24px;
        bottom: 100px;
        z-index: 1100;
        width: 52px;
        height: 52px;
        background: rgba(15,12,32,0.8);
        backdrop-filter: blur(12px);
        border: 2px solid transparent;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        background-clip: padding-box;
        transition: var(--transition-smooth);
    }
    
    .fab-floating::before {
        content: '';
        position: absolute;
        top: -3px; left: -3px; right: -3px; bottom: -3px;
        border-radius: 50%;
        background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
        z-index: -1;
        opacity: 0.7;
    }
    
    .fab-floating i {
        font-size: 1.5rem;
        color: var(--accent-lime);
    }
    
    .fab-floating:hover {
        transform: scale(1.1);
        box-shadow: 0 0 25px rgba(0,240,255,0.6);
    }
    
    /* Responsive */
    @media (max-width: 992px) {
        .hero-title {
            font-size: 2.2rem;
        }
        .section-padding {
            padding: 50px 0;
        }
        .hero-section {
            padding: 140px 0 70px;
        }
    }
    
    @media (max-width: 768px) {
        .hero-title {
            font-size: 1.8rem;
        }
        .hero-desc {
            font-size: 1rem;
        }
        .btn-hero {
            padding: 12px 30px;
            font-size: 0.95rem;
        }
        .container-custom {
            padding: 0 16px;
        }
    }
    
    @media (max-width: 520px) {
        .hero-title {
            font-size: 1.5rem;
        }
        .code-box {
            font-size: 1rem;
            padding: 10px 16px;
        }
    }

/* roulang page: category4 */
:root {
            --bg-primary: #0F0C20;
            --bg-secondary: #0B1A30;
            --bg-card: rgba(15, 12, 32, 0.65);
            --bg-glass: rgba(11, 26, 48, 0.7);
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --accent-yellow: #FFFF00;
            --text-primary: #FFFFFF;
            --text-secondary: #A6ACAF;
            --text-muted: #6B7280;
            --border-neon: rgba(0, 240, 255, 0.3);
            --border-card: rgba(204, 255, 0, 0.15);
            --shadow-neon: 0 0 20px rgba(0, 240, 255, 0.25);
            --shadow-lime: 0 0 15px rgba(204, 255, 0, 0.2);
            --shadow-pink: 0 0 18px rgba(255, 0, 127, 0.3);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }

        body {
            font-family: var(--font-heading);
            background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
            color: var(--text-primary);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: 
                radial-gradient(circle at 25% 25%, rgba(0, 240, 255, 0.03) 0%, transparent 50%),
                radial-gradient(circle at 75% 75%, rgba(204, 255, 0, 0.03) 0%, transparent 50%),
                repeating-linear-gradient(0deg, rgba(0, 240, 255, 0.02) 0px, rgba(0, 240, 255, 0.02) 1px, transparent 1px, transparent 40px),
                repeating-linear-gradient(90deg, rgba(0, 240, 255, 0.02) 0px, rgba(0, 240, 255, 0.02) 1px, transparent 1px, transparent 40px);
            pointer-events: none;
            z-index: 0;
        }

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

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

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

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

        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

        .section-padding {
            padding: 80px 0;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(15, 12, 32, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-neon);
            transition: var(--transition-smooth);
        }

        .site-header.scrolled {
            background: rgba(15, 12, 32, 0.95);
            box-shadow: 0 4px 30px rgba(0, 240, 255, 0.15);
        }

        .navbar-brand-custom {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
            text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
        }

        .navbar-brand-custom:hover {
            color: var(--accent-lime);
            text-shadow: 0 0 15px rgba(204, 255, 0, 0.6);
        }

        .nav-link-custom {
            color: var(--text-secondary) !important;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.6rem 1.2rem !important;
            position: relative;
            letter-spacing: 0.3px;
        }

        .nav-link-custom::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-lime));
            transition: width 0.3s ease;
        }

        .nav-link-custom:hover,
        .nav-link-custom.active {
            color: var(--accent-cyan) !important;
        }

        .nav-link-custom:hover::after,
        .nav-link-custom.active::after {
            width: 70%;
        }

        .btn-login {
            background: transparent;
            color: var(--accent-cyan);
            border: 1px solid var(--accent-cyan);
            padding: 8px 20px;
            border-radius: 25px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition-smooth);
        }

        .btn-login:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
            color: var(--accent-cyan);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-cyan), #0099FF);
            color: #000;
            padding: 8px 24px;
            border-radius: 25px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            transition: var(--transition-smooth);
        }

        .btn-signup:hover {
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            box-shadow: 0 0 30px rgba(204, 255, 0, 0.5);
            transform: translateY(-1px);
        }

        .hero-section {
            padding: 140px 0 80px;
            background: linear-gradient(180deg, rgba(11, 26, 48, 0.9) 0%, rgba(15, 12, 32, 0.95) 100%), url('/assets/images/backpic/back-3.jpg');
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at 70% 50%, rgba(204, 255, 0, 0.15) 0%, transparent 60%);
        }

        .flash-sale-bar {
            background: linear-gradient(135deg, rgba(255, 0, 127, 0.2), rgba(204, 255, 0, 0.1));
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-lg);
            padding: 16px 24px;
            backdrop-filter: blur(10px);
            margin-bottom: 32px;
        }

        .countdown-box {
            background: rgba(0, 0, 0, 0.5);
            border-radius: var(--radius-sm);
            padding: 8px 16px;
            display: inline-flex;
            align-items: center;
            gap: 12px;
            border: 1px solid var(--accent-pink);
            box-shadow: 0 0 15px rgba(255, 0, 127, 0.2);
        }

        .countdown-digit {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-yellow);
            text-shadow: 0 0 10px rgba(255, 255, 0, 0.5);
        }

        .hero-promo-card {
            background: var(--bg-glass);
            backdrop-filter: blur(20px);
            border: 2px solid var(--border-neon);
            border-radius: var(--radius-xl);
            padding: 32px;
            box-shadow: var(--shadow-neon);
        }

        .promo-badge {
            background: linear-gradient(135deg, var(--accent-pink), #FF4500);
            color: #fff;
            padding: 6px 16px;
            border-radius: 20px;
            font-weight: 700;
            font-size: 0.85rem;
            display: inline-block;
            animation: pulse-badge 2s infinite;
        }

        @keyframes pulse-badge {
            0%,
            100% {
                box-shadow: 0 0 10px rgba(255, 0, 127, 0.5);
            }
            50% {
                box-shadow: 0 0 25px rgba(255, 0, 127, 0.8);
            }
        }

        .btn-grab {
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-yellow));
            color: #000;
            padding: 14px 36px;
            border-radius: 30px;
            font-weight: 800;
            font-size: 1.1rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            box-shadow: 0 0 25px rgba(204, 255, 0, 0.5);
            transition: var(--transition-smooth);
        }

        .btn-grab:hover {
            box-shadow: 0 0 40px rgba(204, 255, 0, 0.8);
            transform: scale(1.05);
            color: #000;
        }

        .tip-card {
            background: var(--bg-glass);
            backdrop-filter: blur(15px);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: var(--transition-smooth);
            height: 100%;
        }

        .tip-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.2);
            transform: translateY(-4px);
        }

        .tip-icon {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            margin-bottom: 18px;
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.2), rgba(204, 255, 0, 0.1));
            border: 1px solid var(--border-neon);
            color: var(--accent-cyan);
        }

        .strategy-list-item {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.05), rgba(204, 255, 0, 0.03));
            border-left: 3px solid var(--accent-cyan);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            padding: 20px 24px;
            margin-bottom: 16px;
            transition: var(--transition-smooth);
        }

        .strategy-list-item:hover {
            border-left-color: var(--accent-lime);
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.08), rgba(204, 255, 0, 0.06));
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.1);
        }

        .faq-item-custom {
            background: var(--bg-glass);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition-smooth);
        }

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

        .faq-item-custom .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-weight: 700;
            padding: 18px 24px;
            box-shadow: none;
        }

        .faq-item-custom .accordion-button:not(.collapsed) {
            background: rgba(0, 240, 255, 0.05);
            color: var(--accent-cyan);
            box-shadow: none;
        }

        .faq-item-custom .accordion-button::after {
            filter: brightness(0) invert(1);
        }

        .faq-item-custom .accordion-body {
            color: var(--text-secondary);
            padding: 0 24px 18px;
            line-height: 1.7;
        }

        .cta-sticky-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(15, 12, 32, 0.95);
            backdrop-filter: blur(20px);
            border-top: 2px solid var(--border-neon);
            padding: 12px 0;
            z-index: 1040;
            box-shadow: 0 -4px 30px rgba(0, 240, 255, 0.2);
        }

        .site-footer {
            background: rgba(11, 26, 48, 0.9);
            border-top: 1px solid var(--border-neon);
            padding: 60px 0 30px;
            margin-bottom: 80px;
            position: relative;
            z-index: 1;
        }

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

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

        .footer-bottom {
            border-top: 1px solid var(--border-card);
            margin-top: 40px;
            padding-top: 24px;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .fab-floating {
            position: fixed;
            left: 16px;
            bottom: 120px;
            z-index: 1055;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(15, 12, 32, 0.7);
            backdrop-filter: blur(10px);
            border: 2px solid;
            border-image: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime)) 1;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.5rem;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            transition: var(--transition-smooth);
            animation: float-fab 3s ease-in-out infinite;
        }

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

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

        @media (max-width: 992px) {
            .section-padding {
                padding: 50px 0;
            }
            .hero-section {
                padding: 120px 0 50px;
            }
            .navbar-collapse {
                background: rgba(15, 12, 32, 0.98);
                border-radius: var(--radius-md);
                padding: 16px;
                margin-top: 8px;
                border: 1px solid var(--border-neon);
            }
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
            .countdown-digit {
                font-size: 1.5rem;
            }
            .hero-promo-card {
                padding: 20px;
            }
        }