/* roulang page: index */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.82);
            --bg-glass: rgba(8, 9, 15, 0.72);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-gold: #FFD700;
            --accent-red: #FF3B3B;
            --accent-green: #00E676;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #8892A6;
            --border-glow: rgba(0, 240, 255, 0.35);
            --border-blue: rgba(0, 82, 255, 0.5);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-glow: 0 0 25px rgba(0, 240, 255, 0.15);
            --shadow-blue: 0 8px 30px rgba(0, 82, 255, 0.25);
            --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.45);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-main: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --container: 1200px;
            --header-height: 72px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            font-family: var(--font-main);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            font-size: 16px;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            background-image: 
                radial-gradient(circle at 20% 20%, rgba(0, 82, 255, 0.06) 0%, transparent 50%),
                radial-gradient(circle at 80% 10%, rgba(0, 240, 255, 0.04) 0%, transparent 50%),
                radial-gradient(circle at 50% 90%, rgba(0, 82, 255, 0.05) 0%, transparent 50%);
            background-attachment: fixed;
        }

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

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

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

        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }

        button {
            cursor: pointer;
            background: none;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== HEADER / NAV ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
            height: var(--header-height);
            transition: background var(--transition), box-shadow var(--transition);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.96);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--text-primary);
            white-space: nowrap;
            letter-spacing: -0.02em;
            transition: opacity var(--transition);
        }

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

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #fff;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.35);
            flex-shrink: 0;
        }

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

        .logo-text strong {
            font-size: 0.95rem;
            font-weight: 800;
        }

        .logo-text span {
            font-size: 0.68rem;
            font-weight: 500;
            color: var(--text-muted);
            letter-spacing: 0.04em;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }

        .nav-links li a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 16px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 0.88rem;
            color: var(--text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }

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

        .nav-links li a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.1);
        }

        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--accent-cyan);
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 12px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.01em;
            position: relative;
            overflow: hidden;
        }

        .btn-login {
            color: var(--text-primary);
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

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

        .btn-signup {
            color: #fff;
            background: linear-gradient(135deg, var(--accent-blue), #0039B3);
            box-shadow: 0 4px 20px rgba(0, 82, 255, 0.4);
            border: 1px solid rgba(0, 240, 255, 0.3);
        }

        .btn-signup:hover {
            box-shadow: 0 6px 28px rgba(0, 82, 255, 0.6);
            transform: translateY(-2px);
            background: linear-gradient(135deg, #1A6BFF, #0052FF);
        }

        .btn-signup:active {
            transform: translateY(0);
            box-shadow: 0 2px 12px rgba(0, 82, 255, 0.4);
        }

        .btn-ghost {
            background: transparent;
            border: 1px solid rgba(0, 240, 255, 0.4);
            color: var(--accent-cyan);
        }

        .btn-ghost:hover {
            background: rgba(0, 240, 255, 0.08);
            border-color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.25);
        }

        .btn-gold {
            background: linear-gradient(135deg, #FFD700, #FFA500);
            color: #1a1a1a;
            font-weight: 800;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.35);
        }

        .btn-gold:hover {
            box-shadow: 0 6px 28px rgba(255, 215, 0, 0.55);
            transform: translateY(-2px);
        }

        .btn-lg {
            padding: 15px 32px;
            font-size: 1rem;
            border-radius: 14px;
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 0.8rem;
            border-radius: 8px;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: none;
            border: none;
            cursor: pointer;
        }

        .hamburger span {
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 4px;
            transition: all 0.3s ease;
        }

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

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

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

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(8, 9, 15, 0.98);
            backdrop-filter: blur(20px);
            z-index: 999;
            padding: 24px;
            overflow-y: auto;
            animation: fadeIn 0.3s ease;
        }

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

        .mobile-menu .nav-links-mobile {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .mobile-menu .nav-links-mobile a {
            padding: 16px 20px;
            border-radius: 12px;
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-secondary);
            border: 1px solid rgba(255, 255, 255, 0.06);
            background: rgba(255, 255, 255, 0.03);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .mobile-menu .nav-links-mobile a.active {
            color: var(--accent-cyan);
            border-color: rgba(0, 240, 255, 0.3);
            background: rgba(0, 240, 255, 0.06);
        }

        .mobile-menu .mobile-actions {
            margin-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(-10px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* ===== HERO ===== */
        .hero {
            padding: calc(var(--header-height) + 40px) 0 60px;
            background: linear-gradient(180deg, rgba(0, 82, 255, 0.12) 0%, rgba(8, 9, 15, 0.9) 60%, var(--bg-primary) 100%);
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.12) 0%, transparent 70%);
            pointer-events: none;
            animation: pulseGlow 4s ease-in-out infinite;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 82, 255, 0.1) 0%, transparent 70%);
            pointer-events: none;
        }

        @keyframes pulseGlow {
            0%, 100% { opacity: 0.6; }
            50% { opacity: 1; }
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 100px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.25);
            color: var(--accent-cyan);
            font-size: 0.82rem;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }

        .hero-badge i {
            font-size: 0.9rem;
        }

        .hero h1 {
            font-size: 2.8rem;
            font-weight: 900;
            line-height: 1.15;
            margin-bottom: 20px;
            letter-spacing: -0.03em;
            background: linear-gradient(135deg, #FFFFFF 0%, #D1E4FF 50%, #00F0FF 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.08rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 520px;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 32px;
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

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

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

        .hero-stat span {
            font-size: 0.8rem;
            color: var(--text-muted);
            font-weight: 500;
        }

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

        .hero-visual-card {
            width: 100%;
            max-width: 420px;
            background: var(--bg-glass);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-xl);
            padding: 32px;
            box-shadow: var(--shadow-glow), var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }

        .hero-visual-card::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 200%;
            height: 200%;
            background: conic-gradient(from 0deg, transparent, rgba(0, 240, 255, 0.08), transparent, rgba(0, 82, 255, 0.08), transparent);
            animation: rotateGlow 8s linear infinite;
            pointer-events: none;
        }

        @keyframes rotateGlow {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }

        .hero-visual-card .card-content {
            position: relative;
            z-index: 2;
        }

        .jackpot-display {
            text-align: center;
            margin-bottom: 24px;
        }

        .jackpot-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .jackpot-amount {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--accent-gold);
            letter-spacing: -0.02em;
            text-shadow: 0 0 30px rgba(255, 215, 0, 0.4);
            animation: shimmer 2s ease-in-out infinite;
        }

        @keyframes shimmer {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.85; }
        }

        .jackpot-progress {
            height: 6px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 6px;
            margin: 16px 0;
            overflow: hidden;
        }

        .jackpot-progress-bar {
            height: 100%;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan), var(--accent-gold));
            border-radius: 6px;
            width: 78%;
            animation: progressPulse 3s ease-in-out infinite;
        }

        @keyframes progressPulse {
            0%, 100% { width: 78%; }
            50% { width: 82%; }
        }

        .jackpot-info {
            display: flex;
            justify-content: space-between;
            font-size: 0.78rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        .team-progress {
            margin-top: 24px;
            padding: 16px;
            background: rgba(0, 240, 255, 0.04);
            border-radius: 12px;
            border: 1px solid rgba(0, 240, 255, 0.15);
        }

        .team-progress-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 10px;
            font-size: 0.85rem;
            font-weight: 600;
        }

        .team-avatars {
            display: flex;
            align-items: center;
        }

        .team-avatars span {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: 2px solid var(--bg-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.65rem;
            font-weight: 700;
            color: #fff;
            margin-right: -8px;
        }

        .team-avatars span:last-child {
            margin-right: 0;
        }

        .team-progress-bar {
            height: 4px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 4px;
            overflow: hidden;
            margin-top: 8px;
        }

        .team-progress-bar-fill {
            height: 100%;
            background: var(--accent-green);
            border-radius: 4px;
            width: 62%;
        }

        /* ===== SECTION COMMON ===== */
        .section {
            padding: 70px 0;
            position: relative;
        }

        .section-header {
            margin-bottom: 44px;
            max-width: 680px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 12px;
        }

        .section-tag::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--accent-cyan);
            box-shadow: 0 0 8px var(--accent-cyan);
            border-radius: 2px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .section-center {
            text-align: center;
        }

        .section-center .section-header {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== FEATURE HIGHLIGHTS ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .feature-item {
            padding: 28px;
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(0, 240, 255, 0.12);
            border-radius: var(--radius-lg);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

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

        .feature-item:hover {
            border-color: rgba(0, 240, 255, 0.35);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }

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

        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.2), rgba(0, 240, 255, 0.2));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--accent-cyan);
            margin-bottom: 16px;
            border: 1px solid rgba(0, 240, 255, 0.2);
        }

        .feature-item h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }

        .feature-item p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* ===== HIGHLIGHT WALL ===== */
        .highlight-wall {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .highlight-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid rgba(0, 240, 255, 0.15);
            transition: all var(--transition);
            aspect-ratio: 1 / 1.1;
            background: var(--bg-secondary);
        }

        .highlight-card:hover {
            border-color: rgba(0, 240, 255, 0.4);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }

        .highlight-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .highlight-card:hover img {
            transform: scale(1.06);
        }

        .highlight-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 16px;
            background: linear-gradient(180deg, transparent, rgba(8, 9, 15, 0.95));
        }

        .highlight-overlay h4 {
            font-size: 0.9rem;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .highlight-overlay span {
            font-size: 0.75rem;
            color: var(--accent-cyan);
            font-weight: 600;
        }

        /* ===== CONTENT LIST ===== */
        .content-layout {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 32px;
            align-items: start;
        }

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

        .content-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            background: var(--bg-glass);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            transition: all var(--transition);
        }

        .content-item:hover {
            border-color: rgba(0, 240, 255, 0.3);
            background: rgba(0, 240, 255, 0.04);
            transform: translateX(4px);
        }

        .content-item-num {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: rgba(0, 82, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.8rem;
            color: var(--accent-cyan);
            flex-shrink: 0;
        }

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

        .content-item-body h4 {
            font-size: 0.92rem;
            font-weight: 700;
            margin-bottom: 4px;
            line-height: 1.4;
        }

        .content-item-body p {
            font-size: 0.8rem;
            color: var(--text-muted);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .content-item-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.72rem;
            color: var(--text-muted);
            flex-shrink: 0;
        }

        .content-sidebar {
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(0, 240, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 24px;
        }

        .content-sidebar h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--accent-cyan);
        }

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

        .sidebar-item {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding-bottom: 12px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .sidebar-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .sidebar-item i {
            color: var(--accent-gold);
            font-size: 0.8rem;
            margin-top: 4px;
        }

        .sidebar-item span {
            font-size: 0.82rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* ===== KPI DASHBOARD ===== */
        .kpi-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .kpi-card {
            padding: 24px;
            background: var(--bg-glass);
            border: 1px solid rgba(0, 82, 255, 0.2);
            border-radius: var(--radius-md);
            text-align: center;
            transition: all var(--transition);
        }

        .kpi-card:hover {
            border-color: rgba(0, 240, 255, 0.4);
            box-shadow: var(--shadow-blue);
        }

        .kpi-card strong {
            display: block;
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--accent-cyan);
            letter-spacing: -0.02em;
            margin-bottom: 6px;
        }

        .kpi-card span {
            font-size: 0.8rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-glass);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }

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

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 22px;
            cursor: pointer;
            font-weight: 700;
            font-size: 0.95rem;
            transition: color var(--transition);
            gap: 12px;
            user-select: none;
        }

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

        .faq-question i {
            transition: transform var(--transition);
            color: var(--accent-cyan);
            font-size: 0.9rem;
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 22px;
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(180deg, var(--bg-primary), rgba(0, 82, 255, 0.08));
        }

        .cta-box {
            background: var(--bg-glass);
            backdrop-filter: blur(20px);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
            box-shadow: var(--shadow-glow);
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -100px;
            left: 50%;
            transform: translateX(-50%);
            width: 400px;
            height: 200px;
            background: radial-gradient(ellipse, rgba(0, 240, 255, 0.12), transparent);
            pointer-events: none;
        }

        .cta-box h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 14px;
            letter-spacing: -0.02em;
        }

        .cta-box p {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }

        /* ===== FAB ===== */
        .fab {
            position: fixed;
            left: 20px;
            bottom: 90px;
            z-index: 500;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.75);
            backdrop-filter: blur(12px);
            border: 2px solid var(--accent-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-cyan);
            cursor: pointer;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            transition: all var(--transition);
            opacity: 0.75;
            animation: fabFloat 3s ease-in-out infinite;
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.12);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.7);
            border-color: #fff;
        }

        .fab:active {
            transform: scale(0.94);
        }

        .fab .notification-dot {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 14px;
            height: 14px;
            background: #FF3B3B;
            border-radius: 50%;
            border: 2px solid var(--bg-primary);
            animation: blink 1.5s ease-in-out infinite;
        }

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

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

        /* ===== FOOTER ===== */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(0, 240, 255, 0.15);
            padding: 50px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-brand h3 {
            font-size: 1.1rem;
            font-weight: 800;
            margin-bottom: 12px;
            color: var(--accent-cyan);
        }

        .footer-brand p {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.6;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text-primary);
            letter-spacing: 0.04em;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul a {
            font-size: 0.82rem;
            color: var(--text-muted);
            transition: color var(--transition);
        }

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

        .footer-bottom {
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        .footer-bottom .badge-18 {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: #FF3B3B;
            color: #fff;
            font-weight: 800;
            font-size: 0.7rem;
            border: 2px solid #fff;
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero-visual-card {
                max-width: 100%;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .highlight-wall {
                grid-template-columns: repeat(3, 1fr);
            }
            .content-layout {
                grid-template-columns: 1fr;
            }
            .kpi-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }
            .container {
                padding: 0 16px;
            }
            .nav-links {
                display: none;
            }
            .nav-actions .btn-login,
            .nav-actions .btn-signup {
                display: inline-flex;
                padding: 10px 18px;
                font-size: 0.82rem;
            }
            .hamburger {
                display: flex;
            }
            .hero {
                padding: calc(var(--header-height) + 24px) 0 40px;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .hero-stats {
                gap: 16px;
            }
            .hero-stat strong {
                font-size: 1.2rem;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .highlight-wall {
                grid-template-columns: repeat(2, 1fr);
            }
            .content-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
                padding: 14px 16px;
            }
            .content-item-meta {
                width: 100%;
                justify-content: space-between;
            }
            .kpi-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .kpi-card {
                padding: 16px;
            }
            .kpi-card strong {
                font-size: 1.4rem;
            }
            .cta-box {
                padding: 32px 20px;
            }
            .cta-box h2 {
                font-size: 1.4rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .fab {
                left: 14px;
                bottom: 70px;
                width: 48px;
                height: 48px;
                font-size: 1.1rem;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.5rem;
            }
            .hero-badge {
                font-size: 0.7rem;
                padding: 6px 12px;
            }
            .hero-cta-group {
                flex-direction: column;
                width: 100%;
            }
            .hero-cta-group .btn {
                width: 100%;
            }
            .hero-stats {
                flex-direction: column;
                gap: 10px;
            }
            .highlight-wall {
                grid-template-columns: 1fr;
                aspect-ratio: auto;
            }
            .highlight-card {
                aspect-ratio: 16/9;
            }
            .kpi-grid {
                grid-template-columns: 1fr 1fr;
            }
            .nav-actions .btn-login {
                padding: 8px 12px;
                font-size: 0.75rem;
            }
            .nav-actions .btn-signup {
                padding: 8px 14px;
                font-size: 0.75rem;
            }
            .logo-text strong {
                font-size: 0.8rem;
            }
            .logo-text span {
                font-size: 0.6rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-deep: #08090F;
            --bg-navy: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.85);
            --bg-glass: rgba(8, 9, 15, 0.72);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-neon: #00E5FF;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #8A94A6;
            --border-subtle: rgba(0, 240, 255, 0.18);
            --border-glow: rgba(0, 240, 255, 0.45);
            --shadow-neon: 0 0 20px rgba(0, 240, 255, 0.25);
            --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.6);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --container-max: 1200px;
            --spacing-sm: 12px;
            --spacing-md: 24px;
            --spacing-lg: 48px;
            --spacing-xl: 72px;
            --transition-fast: 0.2s ease;
            --transition-med: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-primary: 'Be Vietnam Pro', 'Inter', sans-serif;
        }

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

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

        body {
            font-family: var(--font-primary);
            background: var(--bg-deep);
            background-image: radial-gradient(ellipse at 20% 10%, rgba(0, 82, 255, 0.12) 0%, transparent 55%),
                radial-gradient(ellipse at 85% 20%, rgba(0, 240, 255, 0.08) 0%, transparent 50%),
                linear-gradient(180deg, #08090F 0%, #0D111E 100%);
            color: var(--text-primary);
            line-height: 1.6;
            font-size: 16px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

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

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

        ul,
        ol {
            list-style: none;
        }

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

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== HEADER / NAV ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-med), box-shadow var(--transition-med);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.96);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--text-primary);
            white-space: nowrap;
            letter-spacing: -0.3px;
        }

        .logo i {
            color: var(--accent-cyan);
            font-size: 1.5rem;
            filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.5));
        }

        .logo span {
            background: linear-gradient(135deg, #FFFFFF 0%, #00F0FF 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }

        .nav-links a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 16px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.9rem;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-links a i {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

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

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

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

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

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

        .btn-login {
            padding: 10px 18px;
            font-weight: 600;
            font-size: 0.88rem;
            color: var(--text-primary);
            border-radius: 50px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

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

        .btn-signup {
            padding: 10px 22px;
            font-weight: 700;
            font-size: 0.88rem;
            color: #08090F;
            background: linear-gradient(135deg, #00F0FF 0%, #0052FF 100%);
            border-radius: 50px;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.35);
            transition: all var(--transition-med);
            white-space: nowrap;
        }

        .btn-signup:hover {
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.6);
            transform: translateY(-2px);
            color: #08090F;
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
        }

        .mobile-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .mobile-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .mobile-toggle.open span:nth-child(2) {
            opacity: 0;
        }

        .mobile-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            position: absolute;
            top: 72px;
            left: 0;
            right: 0;
            background: rgba(8, 9, 15, 0.98);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            padding: 20px;
            flex-direction: column;
            gap: 6px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 18px;
            border-radius: 12px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent-cyan);
        }

        .mobile-menu .mobile-actions {
            display: flex;
            gap: 10px;
            margin-top: 16px;
        }

        .mobile-menu .mobile-actions a {
            flex: 1;
            justify-content: center;
            text-align: center;
            border-radius: 50px;
            padding: 12px 18px;
        }

        /* ===== PAGE HERO ===== */
        .page-hero {
            padding: 140px 0 70px;
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.18) 0%, rgba(8, 9, 15, 0.9) 50%, rgba(0, 240, 255, 0.12) 100%);
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -5%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 82, 255, 0.18) 0%, transparent 70%);
            pointer-events: none;
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--border-glow);
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-cyan);
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }

        .page-hero h1 {
            font-size: clamp(2.2rem, 5vw, 3.8rem);
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -1px;
            margin-bottom: 20px;
            color: var(--text-primary);
            max-width: 800px;
        }

        .page-hero h1 .highlight {
            background: linear-gradient(135deg, #00F0FF 0%, #0052FF 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

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

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            align-items: center;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 32px;
            font-weight: 700;
            font-size: 1rem;
            border-radius: 50px;
            background: linear-gradient(135deg, #00F0FF 0%, #0052FF 100%);
            color: #08090F;
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.4);
            transition: all var(--transition-med);
        }

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

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 32px;
            font-weight: 600;
            font-size: 1rem;
            border-radius: 50px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid var(--border-glow);
            color: var(--accent-cyan);
            transition: all var(--transition-med);
        }

        .btn-secondary:hover {
            background: rgba(0, 240, 255, 0.16);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.25);
            transform: translateY(-3px);
            color: var(--accent-cyan);
        }

        /* ===== COUNTDOWN BAR ===== */
        .countdown-bar {
            margin-top: 36px;
            padding: 20px 24px;
            background: var(--bg-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            justify-content: space-between;
        }

        .countdown-info {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .countdown-info i {
            font-size: 1.5rem;
            color: var(--accent-cyan);
            animation: pulse-icon 2s ease-in-out infinite;
        }

        @keyframes pulse-icon {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.5; }
        }

        .countdown-info .countdown-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        .countdown-info .countdown-value {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
        }

        .countdown-timer {
            display: flex;
            gap: 10px;
            align-items: center;
        }

        .timer-block {
            display: flex;
            flex-direction: column;
            align-items: center;
            background: rgba(0, 82, 255, 0.15);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            padding: 8px 14px;
            min-width: 60px;
        }

        .timer-block .number {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1.2;
        }

        .timer-block .unit {
            font-size: 0.7rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* ===== SECTIONS ===== */
        .section {
            padding: 70px 0;
        }

        .section-alt {
            background: rgba(13, 17, 30, 0.5);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .section-header {
            margin-bottom: 40px;
            max-width: 700px;
        }

        .section-header h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 800;
            letter-spacing: -0.5px;
            line-height: 1.2;
            margin-bottom: 14px;
            color: var(--text-primary);
        }

        .section-header p {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 14px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--border-subtle);
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 16px;
        }

        /* ===== TIPS GRID ===== */
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .tip-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: all var(--transition-med);
            position: relative;
            overflow: hidden;
        }

        .tip-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, #00F0FF 0%, #0052FF 100%);
            opacity: 0;
            transition: opacity var(--transition-med);
        }

        .tip-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-neon);
            border-color: var(--border-glow);
        }

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

        .tip-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid var(--border-subtle);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-cyan);
            margin-bottom: 18px;
        }

        .tip-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

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

        /* ===== STRATEGY FLOW ===== */
        .strategy-flow {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            counter-reset: step;
        }

        .step-item {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 26px 22px;
            transition: all var(--transition-med);
            position: relative;
            counter-increment: step;
        }

        .step-item::after {
            content: counter(step);
            position: absolute;
            top: -14px;
            right: 18px;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: linear-gradient(135deg, #00F0FF 0%, #0052FF 100%);
            color: #08090F;
            font-weight: 800;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
        }

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

        .step-item h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .step-item p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== IMAGE WALL ===== */
        .image-wall {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
        }

        .wall-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-med);
            aspect-ratio: 16/10;
        }

        .wall-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-med);
        }

        .wall-card::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(8, 9, 15, 0.85) 100%);
            pointer-events: none;
        }

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

        .wall-card:hover img {
            transform: scale(1.06);
        }

        .wall-card .wall-caption {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 2;
            padding: 18px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-primary);
        }

        .wall-card .wall-caption span {
            display: block;
            font-size: 0.75rem;
            color: var(--accent-cyan);
            font-weight: 500;
            margin-top: 4px;
        }

        /* ===== CTA SECTION ===== */
        .cta-section {
            padding: 70px 0;
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.2) 0%, rgba(8, 9, 15, 0.9) 40%, rgba(0, 240, 255, 0.15) 100%);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .cta-box {
            background: var(--bg-glass);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            display: flex;
            flex-direction: column;
            gap: 24px;
            align-items: flex-start;
            max-width: 800px;
            box-shadow: var(--shadow-neon);
        }

        .cta-box h2 {
            font-size: clamp(1.6rem, 3vw, 2.3rem);
            font-weight: 800;
            letter-spacing: -0.5px;
            line-height: 1.2;
        }

        .cta-box p {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

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

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 850px;
        }

        .faq-item {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-med);
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            transition: color var(--transition-fast);
        }

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--border-subtle);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: var(--accent-cyan);
            transition: all var(--transition-fast);
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: rgba(0, 240, 255, 0.2);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-med), padding var(--transition-med);
            padding: 0 24px;
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 24px 22px;
        }

        .faq-answer p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: rgba(8, 9, 15, 0.95);
            border-top: 1px solid var(--border-subtle);
            padding: 60px 0 0;
            margin-top: 0;
        }

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

        .footer-brand h3 {
            font-size: 1.3rem;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-brand h3 i {
            color: var(--accent-cyan);
        }

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

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul a {
            font-size: 0.88rem;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .badge-18 {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: #D32F2F;
            color: #FFFFFF;
            font-weight: 800;
            font-size: 0.75rem;
            border: 2px solid rgba(255, 255, 255, 0.4);
        }

        /* ===== FAB ===== */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.75);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(8, 9, 15, 0.75), rgba(8, 9, 15, 0.75)), linear-gradient(135deg, #00F0FF, #0052FF);
            background-origin: border-box;
            background-clip: padding-box, border-box;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-cyan);
            opacity: 0.6;
            transition: all var(--transition-med);
            cursor: pointer;
        }

        .fab:hover {
            opacity: 1;
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.8);
            transform: scale(1.1);
            color: #FFFFFF;
        }

        .fab:active {
            transform: scale(0.95);
            border-color: #FF007F;
        }

        .fab .notification-dot {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: #FF007F;
            border: 2px solid #08090F;
            animation: blink-dot 1.5s ease-in-out infinite;
        }

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

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .header-inner {
                min-height: 64px;
            }
            .page-hero {
                padding: 120px 0 50px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .header-actions .btn-login,
            .header-actions .btn-signup {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
            .countdown-bar {
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
            }
            .timer-block {
                min-width: 50px;
                padding: 6px 10px;
            }
            .timer-block .number {
                font-size: 1.1rem;
            }
            .section {
                padding: 50px 0;
            }
            .tips-grid,
            .strategy-flow,
            .image-wall {
                grid-template-columns: 1fr;
            }
            .cta-box {
                padding: 32px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .fab {
                width: 48px;
                height: 48px;
                left: 12px;
                bottom: 80px;
                font-size: 1.2rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .page-hero h1 {
                font-size: 1.7rem;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
                padding: 14px 24px;
                font-size: 0.9rem;
            }
            .timer-block {
                min-width: 44px;
                padding: 4px 8px;
            }
            .timer-block .number {
                font-size: 0.95rem;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 0.9rem;
            }
            .faq-answer {
                padding: 0 18px;
            }
            .faq-item.active .faq-answer {
                padding: 0 18px 18px;
            }
        }

/* roulang page: article */
:root {
            --bg-deep: #08090F;
            --bg-navy: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.92);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-hotpink: #FF007F;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #7C8BA1;
            --border-glow: rgba(0, 240, 255, 0.3);
            --border-subtle: rgba(148, 163, 184, 0.12);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-glow: 0 0 18px rgba(0, 240, 255, 0.15);
            --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.45);
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1180px;
        }

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

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

        body {
            font-family: var(--font-sans);
            background: linear-gradient(165deg, var(--bg-deep) 0%, var(--bg-navy) 55%, #06070A 100%);
            color: var(--text-silver);
            line-height: 1.65;
            font-size: 16px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

        a:hover {
            color: #66F5FF;
            text-decoration: underline;
        }

        button,
        .btn {
            font-family: inherit;
            cursor: pointer;
            border: none;
            outline: none;
            transition: var(--transition);
            font-weight: 600;
            letter-spacing: 0.02em;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-sm);
        }

        button:focus-visible,
        .btn:focus-visible,
        a:focus-visible {
            outline: 3px solid rgba(0, 240, 255, 0.7);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: nowrap;
            gap: 20px;
            min-height: 72px;
            padding: 0 24px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--text-white);
            letter-spacing: -0.01em;
            white-space: nowrap;
            text-decoration: none;
        }

        .logo i {
            color: var(--accent-cyan);
            font-size: 1.5rem;
            filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.6));
        }

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

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            flex-wrap: nowrap;
        }

        .nav-links li a {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 10px 16px;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-silver);
            white-space: nowrap;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .nav-links li a i {
            font-size: 0.85rem;
            opacity: 0.85;
        }

        .nav-links li a:hover {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.08);
            border-color: rgba(0, 240, 255, 0.2);
            text-decoration: none;
        }

        .nav-links li a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.12);
            border-color: rgba(0, 240, 255, 0.45);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.2);
        }

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

        .btn-login {
            background: transparent;
            color: var(--text-white);
            padding: 10px 18px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 600;
        }

        .btn-login:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.45);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #FFFFFF;
            padding: 10px 22px;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 700;
            box-shadow: 0 4px 16px rgba(0, 82, 255, 0.45);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .btn-signup:hover {
            box-shadow: 0 6px 24px rgba(0, 240, 255, 0.6);
            transform: translateY(-2px);
            background: linear-gradient(135deg, #1A6BFF, #22F0FF);
        }

        .mobile-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 10px;
            color: var(--text-white);
            font-size: 1.4rem;
            padding: 8px 14px;
            cursor: pointer;
        }

        /* ========== ARTICLE HERO ========== */
        .article-hero {
            padding: 56px 0 36px;
            background:
                radial-gradient(ellipse at 20% 20%, rgba(0, 82, 255, 0.22) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 70%, rgba(0, 240, 255, 0.12) 0%, transparent 50%),
                url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            background-blend-mode: screen, screen, normal;
            position: relative;
            border-bottom: 1px solid var(--border-subtle);
        }

        .article-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(8, 9, 15, 0.68);
            z-index: 1;
        }

        .article-hero .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 18px;
            flex-wrap: wrap;
        }

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

        .breadcrumb span {
            opacity: 0.7;
        }

        .article-hero h1 {
            font-size: clamp(1.9rem, 4.5vw, 3.2rem);
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-white);
            max-width: 850px;
            letter-spacing: -0.015em;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.6);
            margin-bottom: 18px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 18px;
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        .article-meta i {
            color: var(--accent-cyan);
            margin-right: 6px;
        }

        .meta-tag {
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            padding: 4px 12px;
            border-radius: 999px;
            font-weight: 600;
            color: var(--accent-cyan);
            font-size: 0.8rem;
        }

        /* ========== ARTICLE LAYOUT ========== */
        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 300px;
            gap: 40px;
            padding: 40px 0 64px;
            align-items: start;
        }

        .article-main {
            min-width: 0;
            max-width: 720px;
        }

        .article-featured-img {
            margin-bottom: 28px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-subtle);
        }

        .article-featured-img img {
            width: 100%;
            border-radius: var(--radius-lg);
            transition: transform 0.4s ease;
        }

        .article-featured-img img:hover {
            transform: scale(1.01);
        }

        .article-content {
            color: #D5DCE4;
            font-size: 1.05rem;
            line-height: 1.75;
        }

        .article-content h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-white);
            margin: 32px 0 16px;
            letter-spacing: -0.01em;
            padding-bottom: 8px;
            border-bottom: 2px solid rgba(0, 240, 255, 0.2);
        }

        .article-content h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-white);
            margin: 26px 0 12px;
        }

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

        .article-content ul,
        .article-content ol {
            margin: 0 0 20px 24px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .article-content li {
            padding-left: 6px;
        }

        .article-content li::marker {
            color: var(--accent-cyan);
        }

        .article-content blockquote {
            background: rgba(0, 240, 255, 0.06);
            border-left: 4px solid var(--accent-cyan);
            padding: 18px 22px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 24px 0;
            color: var(--text-white);
            font-style: italic;
        }

        .article-content img {
            margin: 24px 0;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
        }

        .article-content a {
            font-weight: 600;
            border-bottom: 1px dashed var(--accent-cyan);
        }

        .article-content a:hover {
            border-bottom-style: solid;
            text-decoration: none;
        }

        .article-not-found {
            background: rgba(0, 240, 255, 0.05);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 40px 28px;
            text-align: left;
            color: var(--text-silver);
        }

        .article-not-found h2 {
            color: var(--text-white);
            margin-bottom: 12px;
        }

        .article-not-found .btn {
            margin-top: 18px;
            background: var(--accent-blue);
            color: #fff;
            padding: 12px 26px;
            border-radius: 999px;
        }

        .article-not-found .btn:hover {
            background: var(--accent-cyan);
            color: #000;
        }

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

        .side-widget {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 22px;
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(8px);
        }

        .side-widget h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: -0.01em;
        }

        .side-widget h3 i {
            color: var(--accent-cyan);
        }

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

        .side-list li a {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--text-silver);
            font-size: 0.9rem;
            font-weight: 500;
            line-height: 1.45;
            padding: 6px 0;
            border-bottom: 1px solid rgba(148, 163, 184, 0.08);
        }

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

        .side-list li a:hover {
            color: var(--accent-cyan);
            text-decoration: none;
        }

        .side-list li a i {
            color: var(--accent-blue);
            font-size: 0.8rem;
            margin-top: 3px;
        }

        .side-trust-badge {
            display: flex;
            align-items: center;
            gap: 12px;
            background: rgba(0, 240, 255, 0.06);
            border-radius: var(--radius-sm);
            padding: 12px;
            margin-bottom: 12px;
        }

        .side-trust-badge i {
            color: var(--accent-cyan);
            font-size: 1.4rem;
        }

        .side-trust-badge span {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-white);
        }

        .side-cta {
            background: linear-gradient(145deg, rgba(0, 82, 255, 0.18), rgba(0, 240, 255, 0.08));
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: var(--radius-md);
            padding: 22px;
            text-align: left;
        }

        .side-cta h4 {
            color: var(--text-white);
            font-size: 1.15rem;
            margin-bottom: 10px;
        }

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

        .side-cta .btn {
            background: var(--accent-cyan);
            color: #000;
            font-weight: 700;
            padding: 12px 20px;
            border-radius: 999px;
            width: 100%;
            justify-content: center;
        }

        .side-cta .btn:hover {
            background: #66F5FF;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 240, 255, 0.4);
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: 64px 0;
            background: radial-gradient(ellipse at center, rgba(0, 82, 255, 0.15) 0%, transparent 70%), var(--bg-navy);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .cta-box {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 28px;
            background: rgba(13, 17, 30, 0.85);
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            box-shadow: var(--shadow-glow);
            backdrop-filter: blur(12px);
        }

        .cta-box h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.01em;
            max-width: 500px;
            line-height: 1.3;
        }

        .cta-box p {
            color: var(--text-silver);
            font-size: 1rem;
            max-width: 450px;
            margin-top: 8px;
        }

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

        .btn-cta-primary {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            padding: 15px 32px;
            border-radius: 999px;
            font-size: 1rem;
            font-weight: 700;
            box-shadow: 0 8px 28px rgba(0, 82, 255, 0.5);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .btn-cta-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(0, 240, 255, 0.55);
            background: linear-gradient(135deg, #1A6BFF, #22F0FF);
        }

        .btn-cta-secondary {
            background: transparent;
            color: var(--text-white);
            padding: 15px 28px;
            border-radius: 999px;
            font-size: 1rem;
            font-weight: 600;
            border: 1px solid rgba(255, 255, 255, 0.3);
        }

        .btn-cta-secondary:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.55);
            transform: translateY(-2px);
        }

        /* ========== FAB ========== */
        .fab-support {
            position: fixed;
            left: 20px;
            bottom: 92px;
            z-index: 900;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(0, 0, 0, 0.72);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.5rem;
            cursor: pointer;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.4), 0 6px 20px rgba(0, 0, 0, 0.5);
            transition: var(--transition);
            opacity: 0.85;
            animation: fabBreath 3.2s ease-in-out infinite;
        }

        .fab-support::before {
            content: "";
            position: absolute;
            inset: -3px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue), var(--accent-hotpink));
            z-index: -1;
            opacity: 0.7;
            animation: fabBorderGlow 2.8s ease-in-out infinite;
        }

        .fab-support:hover {
            opacity: 1;
            transform: scale(1.12);
            box-shadow: 0 0 32px rgba(0, 240, 255, 0.7), 0 8px 28px rgba(0, 0, 0, 0.6);
            color: #FFFFFF;
        }

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

        @keyframes fabBreath {
            0%, 100% { opacity: 0.75; transform: translateY(0); }
            50% { opacity: 1; transform: translateY(-6px); }
        }

        @keyframes fabBorderGlow {
            0%, 100% { filter: hue-rotate(0deg); }
            50% { filter: hue-rotate(40deg); }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #06070A;
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 28px;
            color: var(--text-silver);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-brand h3 {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-white);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
        }

        .footer-brand h3 i {
            color: var(--accent-cyan);
            filter: drop-shadow(0 0 6px rgba(0, 240, 255, 0.5));
        }

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

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

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

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

        .footer-col ul li a:hover {
            color: var(--accent-cyan);
            text-decoration: none;
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid rgba(148, 163, 184, 0.1);
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .badge-18 {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: #B91C1C;
            color: #fff;
            font-weight: 800;
            font-size: 0.8rem;
            border: 2px solid rgba(255, 255, 255, 0.5);
            flex-shrink: 0;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .article-sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
            }
            .side-widget {
                flex: 1 1 240px;
            }
            .side-cta {
                flex: 1 1 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            .nav-wrapper {
                flex-wrap: wrap;
                padding: 12px 16px;
                gap: 10px;
            }
            .nav-links {
                order: 3;
                width: 100%;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                gap: 4px;
                padding-bottom: 6px;
                justify-content: flex-start;
                flex-wrap: nowrap;
                scrollbar-width: thin;
                scrollbar-color: rgba(0, 240, 255, 0.3) transparent;
            }
            .nav-links li a {
                padding: 8px 12px;
                font-size: 0.8rem;
                white-space: nowrap;
            }
            .nav-auth {
                margin-left: auto;
            }
            .btn-login,
            .btn-signup {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
            .mobile-toggle {
                display: none;
            }
            .article-hero {
                padding: 36px 0 24px;
            }
            .article-hero h1 {
                font-size: 1.7rem;
            }
            .article-layout {
                padding: 24px 0 48px;
                gap: 24px;
            }
            .article-content {
                font-size: 1rem;
            }
            .cta-box {
                padding: 28px 22px;
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-box h2 {
                font-size: 1.4rem;
            }
            .cta-actions {
                width: 100%;
            }
            .btn-cta-primary,
            .btn-cta-secondary {
                flex: 1 1 auto;
                justify-content: center;
                padding: 13px 20px;
                font-size: 0.9rem;
            }
            .fab-support {
                left: 14px;
                bottom: 80px;
                width: 50px;
                height: 50px;
                font-size: 1.3rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .nav-wrapper {
                padding: 10px 12px;
                min-height: auto;
            }
            .logo {
                font-size: 1rem;
            }
            .logo i {
                font-size: 1.2rem;
            }
            .btn-login,
            .btn-signup {
                padding: 7px 10px;
                font-size: 0.75rem;
                border-radius: 8px;
            }
            .nav-links li a {
                padding: 7px 10px;
                font-size: 0.75rem;
                gap: 4px;
            }
            .article-hero h1 {
                font-size: 1.4rem;
            }
            .article-meta {
                font-size: 0.78rem;
                gap: 10px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .article-sidebar {
                flex-direction: column;
            }
            .side-widget,
            .side-cta {
                flex: 1 1 100%;
            }
            .cta-box {
                padding: 22px 16px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-deep: #08090F;
            --bg-cyber: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.85);
            --bg-glass: rgba(255, 255, 255, 0.03);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-hot: #FF007F;
            --accent-gold: #FFD700;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #8A94A6;
            --border-neon: rgba(0, 240, 255, 0.3);
            --border-glass: rgba(255, 255, 255, 0.08);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-neon: 0 0 20px rgba(0, 240, 255, 0.15);
            --shadow-blue: 0 0 25px rgba(0, 82, 255, 0.25);
            --font-main: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --spacing-section: 5rem;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            background: var(--bg-deep);
            color: var(--text-white);
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--accent-blue);
        }
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }
        .container-fluid {
            padding-left: 0;
            padding-right: 0;
        }
        /* NAVIGATION */
        .site-header {
            background: rgba(8, 9, 15, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-glass);
            position: sticky;
            top: 0;
            z-index: 1050;
            padding: 0;
        }
        .navbar {
            padding: 0.75rem 0;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--text-white);
            letter-spacing: -0.02em;
            transition: color 0.25s ease;
            white-space: nowrap;
        }
        .navbar-brand:hover {
            color: var(--accent-cyan);
        }
        .navbar-brand i {
            color: var(--accent-gold);
            font-size: 1.3rem;
        }
        .navbar-nav {
            gap: 0.5rem;
            align-items: center;
        }
        .nav-link {
            color: var(--text-silver) !important;
            font-weight: 500;
            font-size: 0.92rem;
            padding: 0.5rem 1rem !important;
            border-radius: 50px;
            transition: all 0.25s ease;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-link i {
            font-size: 0.85rem;
            color: var(--accent-cyan);
            transition: color 0.25s ease;
        }
        .nav-link:hover {
            color: var(--text-white) !important;
            background: rgba(255, 255, 255, 0.05);
        }
        .nav-link.active {
            color: var(--text-white) !important;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--border-neon);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-left: 1rem;
        }
        .btn-login-text {
            background: transparent;
            border: none;
            color: var(--text-silver);
            font-weight: 500;
            font-size: 0.92rem;
            padding: 0.5rem 1rem;
            transition: color 0.25s ease;
            white-space: nowrap;
        }
        .btn-login-text:hover {
            color: var(--text-white);
        }
        .btn-signup-nav {
            background: var(--accent-blue);
            color: var(--text-white);
            border: none;
            font-weight: 600;
            font-size: 0.92rem;
            padding: 0.55rem 1.4rem;
            border-radius: 50px;
            transition: all 0.3s ease;
            white-space: nowrap;
            box-shadow: 0 0 15px rgba(0, 82, 255, 0.35);
        }
        .btn-signup-nav:hover {
            background: var(--accent-cyan);
            color: var(--bg-deep);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.45);
            transform: translateY(-1px);
        }
        .navbar-toggler {
            border: 1px solid var(--border-glass);
            color: var(--text-white);
            padding: 0.4rem 0.7rem;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.03);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.2);
            border-color: var(--accent-cyan);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255, 255, 255, 0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* HERO SECTION */
        .hero-category {
            position: relative;
            padding: 4rem 0 3.5rem;
            background: linear-gradient(160deg, var(--bg-cyber) 0%, var(--bg-deep) 60%);
            overflow: hidden;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 82, 255, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-category::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -60px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.1) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 1.5rem;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }
        .hero-breadcrumb a {
            color: var(--text-silver);
        }
        .hero-breadcrumb a:hover {
            color: var(--accent-cyan);
        }
        .hero-breadcrumb .separator {
            color: var(--accent-cyan);
            font-size: 0.7rem;
        }
        .hero-category .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        .hero-tag {
            display: inline-block;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--border-neon);
            color: var(--accent-cyan);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            padding: 0.35rem 1rem;
            border-radius: 50px;
            margin-bottom: 1.25rem;
            text-transform: uppercase;
        }
        .hero-category h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 1.25rem;
            color: var(--text-white);
        }
        .hero-category h1 .highlight {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .hero-category .hero-desc {
            font-size: 1.1rem;
            color: var(--text-silver);
            line-height: 1.7;
            max-width: 650px;
            margin-bottom: 2rem;
        }
        .hero-cta-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
        }
        .btn-primary-neon {
            background: var(--accent-blue);
            color: var(--text-white);
            border: none;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.8rem 2rem;
            border-radius: 50px;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-blue);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn-primary-neon:hover {
            background: var(--accent-cyan);
            color: var(--bg-deep);
            box-shadow: var(--shadow-neon);
            transform: translateY(-2px);
        }
        .btn-outline-neon {
            background: transparent;
            color: var(--accent-cyan);
            border: 1px solid var(--border-neon);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.8rem 1.8rem;
            border-radius: 50px;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn-outline-neon:hover {
            background: rgba(0, 240, 255, 0.08);
            border-color: var(--accent-cyan);
            color: var(--text-white);
            box-shadow: var(--shadow-neon);
        }
        .hero-stats-row {
            display: flex;
            gap: 2rem;
            margin-top: 2.5rem;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }
        .hero-stat-item {
            display: flex;
            flex-direction: column;
        }
        .hero-stat-value {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--accent-gold);
        }
        .hero-stat-label {
            font-size: 0.82rem;
            color: var(--text-muted);
            letter-spacing: 0.03em;
        }
        .hero-visual-panel {
            position: relative;
            z-index: 2;
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 1.75rem;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-neon);
        }
        .hero-visual-panel h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 1.25rem;
            color: var(--text-white);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .hero-visual-panel h3 i {
            color: var(--accent-cyan);
        }
        .step-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .step-list li {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            color: var(--text-silver);
            font-size: 0.92rem;
            line-height: 1.55;
        }
        .step-number {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--border-neon);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.85rem;
            color: var(--accent-cyan);
        }

        /* SECTION GENERAL */
        .section-block {
            padding: var(--spacing-section) 0;
        }
        .section-block.alt-bg {
            background: var(--bg-cyber);
        }
        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 0.75rem;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 1rem;
            color: var(--text-white);
            line-height: 1.25;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-silver);
            line-height: 1.7;
            max-width: 720px;
            margin-bottom: 2.5rem;
        }

        /* COUNTDOWN STRIP */
        .countdown-strip {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.15), rgba(0, 240, 255, 0.05));
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-md);
            padding: 1.5rem 2rem;
            display: flex;
            align-items: center;
            gap: 2rem;
            flex-wrap: wrap;
            margin-bottom: 2.5rem;
            position: relative;
            z-index: 2;
        }
        .countdown-strip .countdown-icon {
            width: 52px;
            height: 52px;
            background: rgba(0, 240, 255, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-cyan);
            flex-shrink: 0;
        }
        .countdown-strip .countdown-text h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.25rem;
        }
        .countdown-strip .countdown-text p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin: 0;
        }
        .countdown-timer {
            display: flex;
            gap: 0.75rem;
            margin-left: auto;
        }
        .timer-box {
            background: var(--bg-deep);
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-sm);
            padding: 0.5rem 0.75rem;
            text-align: center;
            min-width: 52px;
        }
        .timer-box .timer-value {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--accent-cyan);
            display: block;
            line-height: 1.2;
        }
        .timer-box .timer-label {
            font-size: 0.7rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        /* BENEFIT CARDS */
        .benefit-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 1.5rem;
        }
        .benefit-card {
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 1.75rem;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        .benefit-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue));
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .benefit-card:hover {
            border-color: var(--border-neon);
            box-shadow: var(--shadow-neon);
            transform: translateY(-4px);
        }
        .benefit-card:hover::after {
            opacity: 1;
        }
        .benefit-icon {
            width: 48px;
            height: 48px;
            background: rgba(0, 240, 255, 0.08);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--accent-cyan);
            margin-bottom: 1.25rem;
        }
        .benefit-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            color: var(--text-white);
        }
        .benefit-card p {
            font-size: 0.92rem;
            color: var(--text-silver);
            line-height: 1.65;
            margin: 0;
        }

        /* HIGHLIGHT IMAGE WALL */
        .highlight-wall {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.25rem;
        }
        .highlight-item {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            cursor: pointer;
            border: 1px solid var(--border-glass);
            transition: all 0.3s ease;
            aspect-ratio: 16/10;
            background: var(--bg-cyber);
        }
        .highlight-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .highlight-item:hover {
            border-color: var(--border-neon);
            box-shadow: var(--shadow-neon);
        }
        .highlight-item:hover img {
            transform: scale(1.06);
        }
        .highlight-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 1.5rem 1.25rem;
            background: linear-gradient(transparent, rgba(8, 9, 15, 0.9));
        }
        .highlight-overlay h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 0.25rem;
            color: var(--text-white);
        }
        .highlight-overlay p {
            font-size: 0.82rem;
            color: var(--text-silver);
            margin: 0;
        }

        /* RULE FAQ */
        .faq-wrapper {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-sm);
            margin-bottom: 1rem;
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .faq-item:hover {
            border-color: var(--border-neon);
        }
        .faq-question {
            padding: 1.25rem 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-white);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: color 0.25s ease;
        }
        .faq-question:hover {
            color: var(--accent-cyan);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(0, 240, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: var(--accent-cyan);
            transition: transform 0.3s ease;
        }
        .faq-item.active .faq-icon {
            transform: rotate(180deg);
            background: var(--accent-cyan);
            color: var(--bg-deep);
        }
        .faq-answer {
            padding: 0 1.5rem 1.25rem;
            font-size: 0.95rem;
            color: var(--text-silver);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        /* CTA SECTION */
        .cta-panel {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.2), rgba(0, 240, 255, 0.05));
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-lg);
            padding: 3rem 2.5rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-panel::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -60px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.2), transparent 70%);
            pointer-events: none;
        }
        .cta-panel h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 1rem;
            position: relative;
            z-index: 2;
        }
        .cta-panel p {
            font-size: 1.05rem;
            color: var(--text-silver);
            margin-bottom: 2rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            position: relative;
            z-index: 2;
        }
        .cta-panel .hero-cta-group {
            justify-content: center;
            position: relative;
            z-index: 2;
        }

        /* FAB */
        .fab-floating {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 1060;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            border-image: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue)) 1;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-cyan);
            cursor: pointer;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.35);
            transition: all 0.3s ease;
            animation: fab-breathe 3s ease-in-out infinite;
        }
        .fab-floating:hover {
            box-shadow: 0 0 35px rgba(0, 240, 255, 0.6);
            color: var(--text-white);
            transform: scale(1.1);
            animation-play-state: paused;
        }
        .fab-floating:active {
            transform: scale(0.92);
            border-color: var(--accent-hot);
            color: var(--accent-hot);
        }
        @keyframes fab-breathe {
            0%, 100% {
                box-shadow: 0 0 20px rgba(0, 240, 255, 0.35);
            }
            50% {
                box-shadow: 0 0 30px rgba(0, 240, 255, 0.55);
            }
        }

        /* FOOTER */
        .site-footer {
            background: var(--bg-cyber);
            border-top: 1px solid var(--border-glass);
            padding: 3.5rem 0 1.5rem;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2.5rem;
        }
        .footer-brand h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-brand h3 i {
            color: var(--accent-gold);
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--text-white);
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }
        .footer-col ul a {
            font-size: 0.88rem;
            color: var(--text-muted);
            transition: color 0.25s ease;
        }
        .footer-col ul a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-glass);
            padding-top: 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .badge-18 {
            background: var(--accent-hot);
            color: var(--text-white);
            font-weight: 700;
            font-size: 0.75rem;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        /* RESPONSIVE */
        @media (max-width: 992px) {
            .hero-category h1 {
                font-size: 2.2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .highlight-wall {
                grid-template-columns: repeat(2, 1fr);
            }
            .navbar-nav {
                gap: 0.25rem;
            }
            .nav-link {
                font-size: 0.85rem;
                padding: 0.4rem 0.75rem !important;
            }
            .nav-actions {
                margin-left: 0;
                margin-top: 0.5rem;
            }
        }
        @media (max-width: 768px) {
            :root {
                --spacing-section: 3.5rem;
            }
            .hero-category {
                padding: 2.5rem 0 2.5rem;
            }
            .hero-category h1 {
                font-size: 1.8rem;
            }
            .hero-category .hero-desc {
                font-size: 1rem;
            }
            .hero-stats-row {
                gap: 1.5rem;
            }
            .hero-stat-value {
                font-size: 1.3rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .countdown-strip {
                flex-direction: column;
                align-items: flex-start;
                gap: 1rem;
                padding: 1.25rem 1.5rem;
            }
            .countdown-timer {
                margin-left: 0;
                width: 100%;
                justify-content: space-between;
            }
            .timer-box {
                flex: 1;
                min-width: auto;
            }
            .highlight-wall {
                grid-template-columns: 1fr;
            }
            .cta-panel {
                padding: 2rem 1.5rem;
            }
            .cta-panel h2 {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .navbar-brand {
                font-size: 0.95rem;
            }
            .btn-signup-nav {
                padding: 0.45rem 1rem;
                font-size: 0.85rem;
            }
            .btn-login-text {
                font-size: 0.85rem;
                padding: 0.4rem 0.75rem;
            }
        }
        @media (max-width: 520px) {
            .hero-category h1 {
                font-size: 1.5rem;
            }
            .hero-cta-group {
                flex-direction: column;
                width: 100%;
            }
            .hero-cta-group .btn-primary-neon,
            .hero-cta-group .btn-outline-neon {
                width: 100%;
                justify-content: center;
            }
            .benefit-grid {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .fab-floating {
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
                left: 12px;
                bottom: 80px;
            }
        }

/* roulang page: category3 */
:root {
            --bg-deep: #08090F;
            --bg-navy: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.85);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #8A94A6;
            --border-neon: rgba(0, 240, 255, 0.35);
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.25);
            --shadow-blue: 0 0 20px rgba(0, 82, 255, 0.3);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --space-1: 8px;
            --space-2: 16px;
            --space-3: 24px;
            --space-4: 40px;
            --space-5: 64px;
            --font-main: 'Segoe UI', 'Inter', 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
            --transition-fast: 0.2s ease;
            --transition-med: 0.35s ease;
        }

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

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

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

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

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

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

        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }

        button {
            cursor: pointer;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--space-3);
            width: 100%;
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(8, 9, 15, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.18);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--space-2);
            padding-top: 14px;
            padding-bottom: 14px;
        }

        .logo {
            font-size: 1.45rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
            color: var(--text-white);
        }

        .logo i {
            color: var(--accent-cyan);
            font-size: 1.6rem;
            text-shadow: 0 0 12px rgba(0, 240, 255, 0.7);
        }

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

        .nav-links li a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-silver);
            border: 1px solid transparent;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-links li a:hover {
            color: var(--accent-cyan);
            border-color: rgba(0, 240, 255, 0.4);
            background: rgba(0, 240, 255, 0.05);
        }

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

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 700;
            padding: 12px 26px;
            border-radius: 50px;
            transition: all var(--transition-fast);
            font-size: 0.95rem;
            border: 1px solid transparent;
            letter-spacing: 0.01em;
        }

        .btn-login {
            background: transparent;
            color: var(--text-white);
            border-color: rgba(255, 255, 255, 0.25);
        }

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

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #08090F;
            box-shadow: var(--shadow-blue);
        }

        .btn-signup:hover {
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.55);
            transform: translateY(-2px);
        }

        /* Hero Section */
        .hero {
            padding: var(--space-5) 0 var(--space-4);
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            position: relative;
            border-bottom: 1px solid rgba(0, 240, 255, 0.2);
        }

        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8, 9, 15, 0.92), rgba(13, 17, 30, 0.8));
            z-index: 1;
        }

        .hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: var(--space-4);
            align-items: center;
        }

        .hero-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.03em;
            margin-bottom: var(--space-3);
            color: var(--text-white);
            text-shadow: 0 0 30px rgba(0, 240, 255, 0.3);
        }

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

        .hero-content p {
            font-size: 1.15rem;
            color: var(--text-silver);
            max-width: 560px;
            margin-bottom: var(--space-4);
        }

        .hero-visual {
            background: var(--bg-card);
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-lg);
            padding: var(--space-3);
            box-shadow: var(--shadow-neon);
            backdrop-filter: blur(10px);
            text-align: center;
        }

        .hero-visual img {
            width: 100%;
            height: auto;
            border-radius: var(--radius-md);
            margin-bottom: var(--space-2);
        }

        .hero-visual .badge-row {
            display: flex;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 700;
            background: rgba(0, 240, 255, 0.12);
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 240, 255, 0.3);
        }

        .badge-gold {
            background: rgba(255, 215, 0, 0.15);
            color: #FFD700;
            border-color: rgba(255, 215, 0, 0.4);
        }

        /* Main Content */
        main {
            padding: var(--space-5) 0;
        }

        .section {
            margin-bottom: var(--space-5);
        }

        .section-heading {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: var(--space-3);
            flex-wrap: wrap;
        }

        .section-heading h2 {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-white);
        }

        .section-heading .line {
            flex: 1;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-cyan), transparent);
            min-width: 60px;
        }

        .glass-card {
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-lg);
            padding: var(--space-4);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
            backdrop-filter: blur(10px);
            transition: all var(--transition-med);
        }

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

        .criteria-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: var(--space-3);
            margin-top: var(--space-3);
        }

        .criteria-item {
            padding: var(--space-3);
            border-left: 3px solid var(--accent-cyan);
            background: rgba(13, 17, 30, 0.6);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
        }

        .criteria-item h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--accent-cyan);
        }

        .criteria-item p {
            color: var(--text-silver);
            font-size: 0.95rem;
        }

        .rating-list {
            display: flex;
            flex-direction: column;
            gap: var(--space-3);
            margin-top: var(--space-3);
        }

        .rating-item {
            display: flex;
            align-items: center;
            gap: var(--space-3);
            padding: var(--space-3);
            background: rgba(13, 17, 30, 0.7);
            border-radius: var(--radius-md);
            border: 1px solid rgba(0, 240, 255, 0.15);
            flex-wrap: wrap;
            transition: all var(--transition-fast);
        }

        .rating-item:hover {
            border-color: var(--border-neon);
            box-shadow: var(--shadow-neon);
        }

        .rating-rank {
            font-size: 2rem;
            font-weight: 900;
            color: var(--accent-cyan);
            min-width: 60px;
            text-align: center;
            text-shadow: 0 0 18px rgba(0, 240, 255, 0.6);
        }

        .rating-info {
            flex: 1;
            min-width: 200px;
        }

        .rating-info h4 {
            font-size: 1.2rem;
            font-weight: 700;
        }

        .rating-info .stars {
            color: #FFD700;
            font-size: 1rem;
            margin-top: 4px;
        }

        .rating-score {
            background: rgba(0, 240, 255, 0.12);
            padding: 10px 20px;
            border-radius: 50px;
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 240, 255, 0.35);
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: var(--space-3);
            margin-top: var(--space-3);
            counter-reset: step;
        }

        .step-item {
            padding: var(--space-3);
            background: rgba(13, 17, 30, 0.6);
            border-radius: var(--radius-md);
            border: 1px solid rgba(0, 82, 255, 0.25);
            position: relative;
            counter-increment: step;
        }

        .step-item::before {
            content: counter(step);
            position: absolute;
            top: -14px;
            left: 20px;
            background: var(--accent-blue);
            color: #fff;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            box-shadow: 0 0 18px rgba(0, 82, 255, 0.7);
        }

        .step-item h3 {
            margin-top: 12px;
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 6px;
        }

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

        .trust-badges {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-2);
            margin-top: var(--space-3);
        }

        .trust-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            border-radius: 50px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.3);
            font-weight: 600;
            font-size: 0.9rem;
        }

        .trust-badge i {
            color: var(--accent-cyan);
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--space-2);
            margin-top: var(--space-3);
        }

        .faq-item {
            background: rgba(13, 17, 30, 0.7);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-question {
            padding: var(--space-3);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 700;
            font-size: 1.05rem;
            gap: 12px;
        }

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

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-med), padding var(--transition-fast);
            padding: 0 var(--space-3);
            color: var(--text-silver);
            font-size: 0.95rem;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: var(--space-3);
        }

        /* CTA */
        .cta-section {
            text-align: center;
            padding: var(--space-5) var(--space-3);
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.2), rgba(0, 240, 255, 0.1));
            border-radius: var(--radius-lg);
            border: 1px solid rgba(0, 240, 255, 0.3);
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: var(--space-2);
        }

        .cta-section p {
            color: var(--text-silver);
            max-width: 600px;
            margin: 0 auto var(--space-3);
        }

        .btn-glow {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #08090F;
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.6);
            font-size: 1.1rem;
            padding: 14px 34px;
        }

        .btn-glow:hover {
            box-shadow: 0 0 45px rgba(0, 240, 255, 0.9);
            transform: translateY(-3px);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-navy);
            border-top: 1px solid rgba(0, 240, 255, 0.2);
            padding: var(--space-5) 0 var(--space-3);
            margin-top: var(--space-5);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: var(--space-4);
            margin-bottom: var(--space-4);
        }

        .footer-brand h3 {
            font-size: 1.4rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }

        .footer-brand h3 i {
            color: var(--accent-cyan);
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        .footer-col h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-white);
        }

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

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

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

        .footer-bottom {
            border-top: 1px solid rgba(0, 240, 255, 0.15);
            padding-top: var(--space-3);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--space-2);
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .badge-18 {
            background: #D32F2F;
            color: #fff;
            font-weight: 900;
            padding: 4px 10px;
            border-radius: 6px;
            font-size: 0.8rem;
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: rgba(8, 9, 15, 0.7);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(8, 9, 15, 0.7), rgba(8, 9, 15, 0.7)), linear-gradient(135deg, #00F0FF, #0052FF);
            background-origin: border-box;
            background-clip: padding-box, border-box;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.5rem;
            cursor: pointer;
            transition: all var(--transition-fast);
            opacity: 0.65;
            animation: fabBreath 3s infinite ease-in-out;
        }

        .fab:hover {
            opacity: 1;
            box-shadow: 0 0 35px rgba(0, 240, 255, 0.85);
            transform: scale(1.08);
            color: #fff;
        }

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

        .fab .notification-dot {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 12px;
            height: 12px;
            background: #FF007F;
            border-radius: 50%;
            border: 2px solid #08090F;
            animation: blinkDot 1.2s infinite;
        }

        @keyframes fabBreath {
            0%, 100% { transform: translateY(0); opacity: 0.65; }
            50% { transform: translateY(-6px); opacity: 0.9; }
        }

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

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

        @media (max-width: 768px) {
            .nav-container {
                flex-direction: column;
                align-items: stretch;
            }
            .nav-actions {
                margin-left: 0;
                justify-content: center;
            }
            .nav-links {
                justify-content: center;
            }
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .section-heading h2 {
                font-size: 1.6rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .nav-links li a {
                padding: 8px 12px;
                font-size: 0.85rem;
            }
            .btn {
                padding: 10px 18px;
                font-size: 0.85rem;
            }
            .hero {
                padding: var(--space-4) 0;
            }
            .hero-content h1 {
                font-size: 1.5rem;
            }
            .rating-item {
                flex-direction: column;
                text-align: center;
            }
            .rating-rank {
                min-width: auto;
            }
            .fab {
                left: 12px;
                bottom: 80px;
                width: 48px;
                height: 48px;
                font-size: 1.3rem;
            }
        }