/* roulang page: index */
:root {
            --bg-primary: #0a0e1a;
            --bg-secondary: #0d1624;
            --bg-glass: rgba(255, 255, 255, 0.04);
            --bg-glass-hover: rgba(255, 255, 255, 0.08);
            --border-glass: rgba(255, 255, 255, 0.12);
            --text-white: #ffffff;
            --text-muted: #b0c4de;
            --text-light: #e2e8f0;
            --accent: #00a8ff;
            --accent2: #2de0ff;
            --accent-glow: 0 0 20px rgba(0, 168, 255, 0.55);
            --accent-glow-strong: 0 0 40px rgba(45, 224, 255, 0.7);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
            --shadow-lg: 0 12px 30px rgba(0, 0, 0, 0.5);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-main: 'Segoe UI', 'Roboto', 'Helvetica Neue', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

        a {
            color: var(--accent2);
            text-decoration: none;
            transition: var(--transition);
        }

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

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .glass-card {
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .glass-card:hover {
            background: var(--bg-glass-hover);
            box-shadow: var(--shadow-lg), var(--accent-glow);
            transform: translateY(-4px);
            border-color: var(--accent2);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            border: none;
            transition: var(--transition);
            text-align: center;
            gap: 8px;
            letter-spacing: 0.3px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent), var(--accent2));
            color: #fff;
            box-shadow: var(--accent-glow);
        }

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

        .btn-outline {
            background: transparent;
            border: 2px solid var(--accent2);
            color: var(--accent2);
        }

        .btn-outline:hover {
            background: var(--accent2);
            color: #0a0e1a;
            box-shadow: var(--accent-glow);
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.9rem;
        }

        .section {
            padding: 80px 0;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 700px;
            margin-bottom: 40px;
        }

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

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

        .grid-3 {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 30px;
        }

        .grid-4 {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 25px;
        }

        .badge {
            display: inline-block;
            background: rgba(0, 168, 255, 0.15);
            color: var(--accent2);
            padding: 4px 12px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }

        .rating {
            color: #ffd700;
            letter-spacing: 2px;
        }

        /* Header / Nav */
        header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(10, 14, 26, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-glass);
            padding: 14px 0;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }

        .logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .logo i {
            color: var(--accent2);
            font-size: 1.6rem;
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 24px;
        }

        .nav-desktop a {
            color: var(--text-muted);
            font-weight: 500;
            position: relative;
            padding: 5px 0;
        }

        .nav-desktop a:hover,
        .nav-desktop a.active {
            color: var(--accent2);
        }

        .nav-desktop a.active::after,
        .nav-desktop a:hover::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--accent2);
            border-radius: 2px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .login-btn {
            color: var(--text-muted);
            font-weight: 500;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 1rem;
        }

        .login-btn:hover {
            color: var(--accent2);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1.8rem;
            cursor: pointer;
        }

        /* Mobile Nav */
        .mobile-nav {
            display: none;
            background: rgba(10, 14, 26, 0.98);
            border-top: 1px solid var(--border-glass);
            flex-direction: column;
            padding: 20px 24px;
            gap: 16px;
        }

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

        .mobile-nav a {
            color: var(--text-muted);
            font-weight: 500;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }

        .mobile-nav .nav-actions {
            display: flex;
            gap: 10px;
            padding-top: 10px;
        }

        /* Hero */
        .hero {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, rgba(10,14,26,0.9), rgba(13,22,36,0.95)), url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            background-blend-mode: overlay;
            overflow: hidden;
            min-height: 80vh;
            display: flex;
            align-items: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -20%;
            left: -20%;
            width: 60%;
            height: 60%;
            background: radial-gradient(circle, rgba(0,168,255,0.15), transparent 70%);
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -10%;
            right: -10%;
            width: 50%;
            height: 50%;
            background: radial-gradient(circle, rgba(45,224,255,0.1), transparent 70%);
            pointer-events: none;
        }

        .hero-container {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 40px;
            flex-wrap: wrap;
        }

        .hero-stage {
            flex: 1 1 600px;
            max-width: 700px;
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(15px);
            -webkit-backdrop-filter: blur(15px);
            padding: 30px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.5), var(--accent-glow);
            position: relative;
        }

        .hero-stage img {
            width: 100%;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-glass);
        }

        .hero-value-left,
        .hero-value-right {
            flex: 1 1 200px;
            max-width: 280px;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .value-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            background: var(--bg-glass);
            padding: 18px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: var(--transition);
        }

        .value-item:hover {
            border-color: var(--accent2);
            box-shadow: var(--accent-glow);
        }

        .value-item i {
            font-size: 1.8rem;
            color: var(--accent2);
            flex-shrink: 0;
        }

        .value-item h3 {
            font-size: 1.1rem;
            margin-bottom: 5px;
        }

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

        .hero-content {
            flex: 1 1 100%;
            width: 100%;
            text-align: center;
            margin-top: 30px;
        }

        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            text-shadow: 0 0 30px rgba(0,168,255,0.5);
        }

        .hero .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 35px;
            line-height: 1.7;
        }

        .hero-cta {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Selling Points */
        .selling-points .point-card {
            padding: 30px 25px;
            text-align: left;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .point-card i {
            font-size: 2.5rem;
            color: var(--accent2);
        }

        .point-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
        }

        .point-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* Brand Story */
        .brand-story {
            background: var(--bg-secondary);
            position: relative;
        }

        .brand-story .container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .brand-story img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-glass);
        }

        .brand-story .section-title {
            margin-bottom: 20px;
        }

        .brand-story p {
            color: var(--text-muted);
            font-size: 1.05rem;
            margin-bottom: 15px;
        }

        /* Featured Games */
        .featured-games .game-card {
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            position: relative;
        }

        .featured-games .game-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--accent-glow-strong);
            border-color: var(--accent2);
        }

        .game-card .game-thumb {
            position: relative;
            overflow: hidden;
            height: 180px;
        }

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

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

        .game-card .game-info {
            padding: 20px;
        }

        .game-card h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }

        .game-card .game-meta {
            display: flex;
            justify-content: space-between;
            color: var(--text-muted);
            font-size: 0.85rem;
            margin-bottom: 12px;
        }

        .game-card .btn {
            width: 100%;
        }

        /* Testimonials */
        .testimonials .testimonial-card {
            padding: 25px;
            text-align: left;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .testimonial-card .rating {
            font-size: 1.1rem;
        }

        .testimonial-card p {
            color: var(--text-light);
            font-style: italic;
            line-height: 1.7;
        }

        .testimonial-card .user {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .testimonial-card .user img {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            object-fit: cover;
            border: 2px solid var(--accent2);
        }

        .testimonial-card .user strong {
            color: var(--text-white);
        }

        .testimonial-card .user span {
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        /* News Section */
        .news-section {
            background: var(--bg-secondary);
        }

        .news-list {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
        }

        .news-item {
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-sm);
            padding: 20px;
            transition: var(--transition);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .news-item:hover {
            border-color: var(--accent2);
            background: var(--bg-glass-hover);
            transform: translateY(-3px);
            box-shadow: var(--accent-glow);
        }

        .news-link h3 {
            font-size: 1.05rem;
            margin-bottom: 8px;
            color: var(--text-white);
            line-height: 1.4;
        }

        .news-meta {
            display: flex;
            gap: 15px;
            color: var(--text-muted);
            font-size: 0.8rem;
            margin-bottom: 8px;
        }

        .news-link p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.5;
        }

        /* Entry Matrix */
        .entry-matrix .matrix-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
        }

        .matrix-item {
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 25px;
            text-align: center;
            transition: var(--transition);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            display: flex;
            flex-direction: column;
            gap: 10px;
            align-items: center;
        }

        .matrix-item:hover {
            background: var(--bg-glass-hover);
            border-color: var(--accent2);
            box-shadow: var(--accent-glow);
            transform: translateY(-4px);
        }

        .matrix-item i {
            font-size: 2rem;
            color: var(--accent2);
        }

        .matrix-item h3 {
            font-size: 1rem;
            font-weight: 600;
        }

        /* Subscribe */
        .subscribe-section {
            background: linear-gradient(135deg, rgba(0,168,255,0.05), rgba(45,224,255,0.03));
            border-top: 1px solid var(--border-glass);
            border-bottom: 1px solid var(--border-glass);
        }

        .subscribe-box {
            max-width: 600px;
            margin: 0 auto;
            padding: 40px;
            text-align: center;
        }

        .subscribe-form {
            display: flex;
            gap: 15px;
            margin-top: 25px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .subscribe-form input {
            flex: 1 1 250px;
            padding: 14px 20px;
            border-radius: 50px;
            border: 1px solid var(--border-glass);
            background: rgba(255,255,255,0.05);
            color: var(--text-white);
            outline: none;
            font-size: 1rem;
            transition: var(--transition);
        }

        .subscribe-form input:focus {
            border-color: var(--accent2);
            box-shadow: var(--accent-glow);
        }

        .privacy-note {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 15px;
        }

        /* Footer */
        footer {
            background: var(--bg-primary);
            border-top: 1px solid var(--border-glass);
            padding: 40px 0 20px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }

        .footer-col h4 {
            font-size: 1.1rem;
            margin-bottom: 15px;
            color: var(--text-white);
        }

        .footer-col p, .footer-col a {
            color: var(--text-muted);
            font-size: 0.9rem;
            display: block;
            margin-bottom: 8px;
        }

        .footer-col a:hover {
            color: var(--accent2);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-glass);
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .footer-bottom .domain {
            color: var(--accent2);
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 24px;
            bottom: 60px;
            z-index: 999;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--accent2));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            box-shadow: 0 4px 20px rgba(0, 168, 255, 0.5);
            border: none;
            cursor: pointer;
            transition: var(--transition);
            animation: float 3s ease-in-out infinite;
        }

        .fab:hover {
            transform: scale(1.1);
            box-shadow: 0 8px 30px rgba(45, 224, 255, 0.7);
        }

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

        .fab .notification-dot {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 16px;
            height: 16px;
            background: #ff3b30;
            border-radius: 50%;
            border: 2px solid var(--bg-primary);
            animation: pulse-dot 1.5s infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .section-title { font-size: 1.8rem; }
            .hero h1 { font-size: 2.2rem; }
            .brand-story .container { grid-template-columns: 1fr; }
            .hero-container { flex-direction: column; }
            .hero-stage { max-width: 100%; }
            .hero-value-left, .hero-value-right { flex-direction: row; flex: 1 1 auto; max-width: 100%; gap: 10px; }
            .value-item { flex: 1 1 45%; }
        }

        @media (max-width: 768px) {
            .nav-desktop { display: none; }
            .mobile-toggle { display: block; }
            .nav-actions { display: flex; }
            .header-inner { flex-wrap: nowrap; }
            .hero { padding: 60px 0; }
            .hero h1 { font-size: 1.8rem; }
            .hero-cta { flex-direction: column; gap: 15px; }
            .hero-value-left, .hero-value-right { flex-direction: column; }
            .grid-3, .grid-4 { grid-template-columns: 1fr; }
            .subscribe-box { padding: 30px 20px; }
            .fab { width: 48px; height: 48px; font-size: 1.2rem; left: 16px; bottom: 40px; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .section { padding: 50px 0; }
            .section-title { font-size: 1.5rem; }
            .hero h1 { font-size: 1.5rem; }
            .btn { padding: 10px 20px; font-size: 0.9rem; }
            .hero-stage { padding: 15px; }
            .value-item { padding: 12px; }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0A2E1C;
            --bg-secondary: #123E25;
            --bg-card: rgba(255, 255, 255, 0.04);
            --text-primary: #FFFFFF;
            --text-muted: #D1F2EB;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --accent-gold-soft: #F0E68C;
            --border-gold: rgba(255, 215, 0, 0.35);
            --border-card: rgba(255, 255, 255, 0.1);
            --shadow-glow: 0 0 30px rgba(255, 215, 0, 0.15);
            --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.18);
            --radius-sm: 10px;
            --radius-md: 18px;
            --radius-lg: 28px;
            --radius-xl: 36px;
            --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --font-main: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --container-width: 1200px;
            --spacing-section: 64px;
            --spacing-card: 28px;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-main);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.65;
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        a:hover,
        a:focus {
            color: var(--accent-gold-soft);
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
            transition: all var(--transition);
            font-size: 1rem;
        }

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

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

        /* ============ HEADER / NAV ============ */
        header {
            background: rgba(10, 46, 28, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 1px solid var(--border-gold);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 14px 24px;
            flex-wrap: nowrap;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            white-space: nowrap;
            letter-spacing: 0.2px;
            line-height: 1.4;
        }

        .logo i {
            color: var(--accent-gold);
            font-size: 1.6rem;
            flex-shrink: 0;
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 28px;
            flex-wrap: nowrap;
        }

        .nav-desktop a {
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            transition: color var(--transition);
            white-space: nowrap;
        }

        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-gold);
            border-radius: 4px;
            transition: width var(--transition);
        }

        .nav-desktop a:hover::after,
        .nav-desktop a.active::after {
            width: 100%;
        }

        .nav-desktop a.active {
            color: var(--accent-gold);
        }

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

        .login-btn {
            background: transparent;
            color: var(--text-primary);
            font-weight: 500;
            font-size: 0.92rem;
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            border: 1px solid transparent;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .login-btn:hover {
            border-color: var(--border-gold);
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.06);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.3px;
            border: none;
            transition: all var(--transition);
          text-align: center;
        }

        .btn-sm {
            padding: 9px 20px;
            font-size: 0.9rem;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-gold), #FFA000);
            color: #0A2E1C;
            box-shadow: 0 6px 20px rgba(255, 215, 0, 0.35);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(255, 215, 0, 0.5);
            color: #0A2E1C;
        }

        .btn-outline {
            background: transparent;
            color: var(--accent-gold);
            border: 2px solid var(--border-gold);
        }

        .btn-outline:hover {
            background: rgba(255, 215, 0, 0.1);
            border-color: var(--accent-gold);
            transform: translateY(-2px);
        }

        .btn-glow {
            background: linear-gradient(135deg, #FFD700, #FFA000);
            color: #0A2E1C;
            box-shadow: 0 0 28px rgba(255, 215, 0, 0.45), 0 6px 18px rgba(255, 160, 0, 0.3);
            animation: pulseGlow 2.2s ease-in-out infinite;
        }

        .btn-glow:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 0 40px rgba(255, 215, 0, 0.65), 0 12px 30px rgba(255, 160, 0, 0.4);
        }

        @keyframes pulseGlow {
            0%, 100% {
                box-shadow: 0 0 18px rgba(255, 215, 0, 0.35), 0 6px 18px rgba(255, 160, 0, 0.25);
            }
            50% {
                box-shadow: 0 0 32px rgba(255, 215, 0, 0.55), 0 8px 24px rgba(255, 160, 0, 0.4);
            }
        }

        .mobile-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
            font-size: 1.3rem;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border-card);
            flex-shrink: 0;
            transition: all var(--transition);
        }

        .mobile-toggle:hover {
            border-color: var(--accent-gold);
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.08);
        }

        .mobile-nav {
            display: none;
            flex-direction: column;
            background: rgba(10, 46, 28, 0.98);
            border-top: 1px solid var(--border-gold);
            padding: 16px 24px 24px;
            animation: slideDown 0.3s ease-out;
        }

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

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

        .mobile-nav a {
            color: var(--text-muted);
            font-weight: 500;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: color var(--transition);
        }

        .mobile-nav a.active {
            color: var(--accent-gold);
        }

        .mobile-nav .nav-actions {
            margin-top: 16px;
            gap: 10px;
        }

        /* ============ HERO ============ */
        .hero {
            background: linear-gradient(145deg, var(--bg-secondary), var(--bg-primary) 65%);
            padding: 60px 0 52px;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-gold);
        }

        .hero::after {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.12), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-content {
            display: grid;
            grid-template-columns: 1.15fr 1fr;
            gap: 40px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-text h1 {
            font-size: 2.3rem;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .hero-text h1 .highlight {
            color: var(--accent-gold);
            display: inline;
        }

        .hero-text p {
            font-size: 1.05rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            max-width: 580px;
            line-height: 1.7;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 28px;
        }

        .hero-tag {
            background: rgba(255, 215, 0, 0.1);
            border: 1px solid var(--border-gold);
            color: var(--accent-gold);
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.3px;
        }

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

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

        .hero-visual img {
            width: 100%;
            max-width: 460px;
            border-radius: var(--radius-lg);
            border: 2px solid var(--border-gold);
            box-shadow: var(--shadow-glow), var(--shadow-card);
            object-fit: cover;
            aspect-ratio: 4/3;
            transition: transform var(--transition);
        }

        .hero-visual img:hover {
            transform: scale(1.015);
        }

        .floating-badge {
            position: absolute;
            bottom: -14px;
            right: 12%;
            background: var(--accent-red);
            color: #fff;
            padding: 10px 20px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.88rem;
            box-shadow: 0 8px 24px rgba(211, 47, 47, 0.4);
            letter-spacing: 0.5px;
            z-index: 2;
        }

        /* ============ SECTION STYLES ============ */
        section {
            padding: var(--spacing-section) 0;
        }

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

        .section-header {
            margin-bottom: 36px;
        }

        .section-header h2 {
            font-size: 1.85rem;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 10px;
            letter-spacing: 0.4px;
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 680px;
            line-height: 1.7;
        }

        .section-header .subtitle {
            color: var(--accent-gold);
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        /* ============ STATS DASHBOARD ============ */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 20px;
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: left;
            position: relative;
            overflow: hidden;
            transition: all var(--transition);
        }

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

        .stat-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(180deg, var(--accent-gold), var(--accent-red));
            border-radius: 4px 0 0 4px;
        }

        .stat-number {
            font-size: 2.1rem;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
            line-height: 1.5;
        }

        /* ============ GUIDE CARDS ============ */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

        .guide-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 26px 22px;
            transition: all var(--transition);
            position: relative;
        }

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

        .guide-card .card-icon {
            font-size: 1.7rem;
            color: var(--accent-gold);
            margin-bottom: 14px;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(255, 215, 0, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .guide-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .guide-card p {
            color: var(--text-muted);
            font-size: 0.93rem;
            line-height: 1.65;
            margin-bottom: 12px;
        }

        .guide-card .card-tag {
            color: var(--accent-gold);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
        }

        /* ============ GAME FEATURES ============ */
        .feature-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 18px;
            margin-top: 12px;
        }

        .feature-item {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            padding: 18px 20px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: var(--radius-sm);
            border: 1px solid transparent;
            transition: all var(--transition);
        }

        .feature-item:hover {
            border-color: var(--border-gold);
            background: rgba(255, 215, 0, 0.05);
        }

        .feature-item i {
            color: var(--accent-gold);
            font-size: 1.2rem;
            flex-shrink: 0;
            margin-top: 3px;
        }

        .feature-item h4 {
            font-size: 0.98rem;
            font-weight: 700;
            margin-bottom: 4px;
        }

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

        /* ============ GAME SHOWCASE ============ */
        .game-showcase {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
            margin-top: 16px;
        }

        .game-showcase .game-card {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }

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

        .game-showcase .game-card img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }

        .game-showcase .game-card .card-body {
            padding: 18px 18px 16px;
        }

        .game-showcase .game-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .game-showcase .game-card p {
            color: var(--text-muted);
            font-size: 0.85rem;
            line-height: 1.6;
            margin-bottom: 10px;
        }

        .game-showcase .game-card .rtp-badge {
            display: inline-block;
            background: rgba(255, 215, 0, 0.12);
            color: var(--accent-gold);
            font-size: 0.78rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 50px;
            letter-spacing: 0.3px;
        }

        /* ============ PROCESS STEPS ============ */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 16px;
        }

        .process-step {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 22px 18px;
            transition: all var(--transition);
            position: relative;
        }

        .process-step:hover {
            border-color: var(--border-gold);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }

        .process-step .step-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1;
            margin-bottom: 10px;
            display: block;
            opacity: 0.85;
        }

        .process-step h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .process-step p {
            color: var(--text-muted);
            font-size: 0.86rem;
            line-height: 1.6;
        }

        /* ============ COMPARISON / TABLE ============ */
        .comparison-wrapper {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-card);
            background: rgba(255, 255, 255, 0.03);
            margin-top: 16px;
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 680px;
        }

        .comparison-table th,
        .comparison-table td {
            padding: 16px 20px;
            text-align: left;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.92rem;
            line-height: 1.6;
        }

        .comparison-table th {
            background: rgba(255, 215, 0, 0.08);
            color: var(--accent-gold);
            font-weight: 700;
            font-size: 0.88rem;
            letter-spacing: 0.4px;
            text-transform: uppercase;
        }

        .comparison-table td {
            color: var(--text-muted);
        }

        .comparison-table tr:last-child td {
            border-bottom: none;
        }

        .comparison-table tr:hover td {
            background: rgba(255, 255, 255, 0.02);
        }

        .comparison-table .highlight-cell {
            color: var(--accent-gold);
            font-weight: 700;
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition);
        }

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

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 1rem;
            text-align: left;
            letter-spacing: 0.2px;
        }

        .faq-question i {
            color: var(--accent-gold);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease-out, padding 0.35s ease-out;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
            padding: 0 22px;
        }

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

        /* ============ CTA ============ */
        .cta-banner {
            background: linear-gradient(135deg, var(--bg-secondary), #0F3520);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-glow);
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            top: -60%;
            left: -30%;
            width: 80%;
            height: 200%;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.08), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-banner h2 {
            font-size: 1.7rem;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .cta-banner p {
            color: var(--text-muted);
            font-size: 1rem;
            margin-bottom: 26px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }

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

        /* ============ FLOATING BUTTON ============ */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(10, 46, 28, 0.92);
            border: 2px solid var(--accent-gold);
            color: var(--accent-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.35rem;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            transition: all var(--transition);
            opacity: 0.7;
            animation: breathe 2.4s ease-in-out infinite;
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.1) rotate(360deg);
            box-shadow: 0 8px 30px rgba(255, 215, 0, 0.5);
        }

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

        @keyframes breathe {
            0%, 100% {
                opacity: 0.65;
            }
            50% {
                opacity: 1;
            }
        }

        /* ============ FOOTER ============ */
        footer {
            background: #062315;
            border-top: 1px solid var(--border-gold);
            padding: 52px 0 28px;
            margin-top: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1.2fr 1.3fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 14px;
            letter-spacing: 0.3px;
            line-height: 1.4;
        }

        .footer-col p {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.65;
            margin-bottom: 10px;
        }

        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 0.88rem;
            margin-bottom: 8px;
            transition: color var(--transition);
            line-height: 1.5;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 22px;
            text-align: center;
        }

        .footer-bottom p {
            color: var(--text-muted);
            font-size: 0.82rem;
            line-height: 1.6;
            margin-bottom: 6px;
        }

        .footer-bottom .domain {
            color: var(--accent-gold);
            font-weight: 600;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .header-inner {
                flex-wrap: wrap;
                gap: 12px;
            }

            .nav-desktop {
                gap: 18px;
            }

            .logo {
                font-size: 0.92rem;
                white-space: normal;
                max-width: 200px;
            }

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

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

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

            .feature-list {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 44px;
            }

            .nav-desktop {
                display: none;
            }

            .mobile-toggle {
                display: flex;
            }

            .nav-actions {
                display: none;
            }

            .nav-actions.show-mobile {
                display: flex;
            }

            .hero {
                padding: 40px 0 36px;
            }

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

            .hero-text h1 {
                font-size: 1.7rem;
            }

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

            .hero-visual img {
                max-width: 100%;
                aspect-ratio: 16/10;
            }

            .floating-badge {
                right: 8%;
                bottom: -10px;
                font-size: 0.78rem;
                padding: 8px 14px;
            }

            .section-header h2 {
                font-size: 1.55rem;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }

            .stat-number {
                font-size: 1.7rem;
            }

            .guide-grid,
            .game-showcase {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .process-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }

            .comparison-table th,
            .comparison-table td {
                padding: 12px 14px;
                font-size: 0.84rem;
            }

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

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

            .fab {
                width: 50px;
                height: 50px;
                font-size: 1.15rem;
                left: 12px;
                bottom: 80px;
            }
        }

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

            .header-inner {
                padding: 10px 16px;
            }

            .logo {
                font-size: 0.82rem;
                gap: 8px;
                max-width: 150px;
            }

            .logo i {
                font-size: 1.3rem;
            }

            .hero {
                padding: 30px 0 28px;
            }

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

            .hero-text p {
                font-size: 0.88rem;
                margin-bottom: 18px;
            }

            .hero-tags {
                gap: 8px;
                margin-bottom: 20px;
            }

            .hero-tag {
                font-size: 0.72rem;
                padding: 5px 10px;
            }

            .hero-actions {
                flex-direction: column;
                gap: 10px;
            }

            .btn {
                padding: 10px 20px;
                font-size: 0.92rem;
                width: 100%;
                justify-content: center;
            }

            .section-header h2 {
                font-size: 1.35rem;
            }

            .section-header p {
                font-size: 0.88rem;
            }

            .stats-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .stat-card {
                padding: 18px 16px;
            }

            .stat-number {
                font-size: 1.6rem;
            }

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

            .feature-item {
                padding: 14px 14px;
            }

            .cta-banner h2 {
                font-size: 1.25rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-bottom p {
                font-size: 0.75rem;
            }

            .fab {
                width: 46px;
                height: 46px;
                font-size: 1rem;
                left: 10px;
                bottom: 70px;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-tertiary: #121829;
            --bg-card: rgba(13, 17, 30, 0.65);
            --bg-glass: rgba(8, 9, 15, 0.55);
            --accent-primary: #0052FF;
            --accent-secondary: #00F0FF;
            --accent-gold: #C5A059;
            --accent-lava: #FF4500;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #7C8BA0;
            --border-color: rgba(0, 240, 255, 0.15);
            --border-strong: rgba(0, 240, 255, 0.35);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --radius-full: 999px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 24px rgba(0, 82, 255, 0.45), 0 0 48px rgba(0, 240, 255, 0.15);
            --shadow-glow-hover: 0 0 36px rgba(0, 82, 255, 0.65), 0 0 72px rgba(0, 240, 255, 0.3);
            --font-primary: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --font-display: 'Be Vietnam Pro', 'Inter', system-ui, sans-serif;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
            --navbar-height: 72px;
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 32px;
            --spacing-2xl: 48px;
            --spacing-3xl: 64px;
            --spacing-4xl: 80px;
        }

        *, *::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-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
            font-size: inherit;
        }

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

        ul, ol {
            list-style-position: inside;
        }

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

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* ============ HEADER & NAVBAR ============ */
        header {
            background: rgba(8, 9, 15, 0.88);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 1px solid var(--border-color);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            height: var(--navbar-height);
            flex-wrap: nowrap;
            padding: 0 var(--spacing-lg);
            max-width: var(--container-max);
            margin: 0 auto;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-primary);
            white-space: nowrap;
            flex-shrink: 0;
            min-width: 0;
            letter-spacing: -0.02em;
        }

        .logo i {
            color: var(--accent-secondary);
            font-size: 1.35rem;
            filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.6));
        }

        .logo span {
            overflow: hidden;
            text-overflow: ellipsis;
        }

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

        .nav-desktop a {
            color: var(--text-secondary);
            padding: var(--spacing-sm) var(--spacing-md);
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

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

        .nav-desktop a.active {
            color: var(--accent-secondary);
            background: rgba(0, 240, 255, 0.12);
        }

        .nav-desktop a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            background: var(--accent-secondary);
            border-radius: 2px;
            box-shadow: 0 0 8px rgba(0, 240, 255, 0.6);
        }

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

        .login-btn {
            color: var(--text-secondary);
            padding: var(--spacing-sm) var(--spacing-md);
            border-radius: var(--radius-full);
            font-size: 0.88rem;
            font-weight: 600;
            transition: all var(--transition-fast);
            white-space: nowrap;
            border: 1px solid transparent;
        }

        .login-btn:hover {
            color: var(--text-primary);
            border-color: var(--border-strong);
            background: rgba(255, 255, 255, 0.04);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: var(--spacing-sm);
            font-weight: 600;
            border-radius: var(--radius-full);
            padding: 10px 22px;
            font-size: 0.9rem;
            transition: all var(--transition-base);
            text-align: center;
            line-height: 1.4;
            white-space: nowrap;
        }

        .btn:focus-visible {
            outline: 2px solid var(--accent-secondary);
            outline-offset: 3px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: var(--text-primary);
            border: none;
            box-shadow: var(--shadow-glow);
            position: relative;
            overflow: hidden;
        }

        .btn-primary::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), transparent);
            opacity: 0;
            transition: opacity var(--transition-base);
            border-radius: var(--radius-full);
        }

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

        .btn-primary:hover::after {
            opacity: 1;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-glow);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-secondary);
            border: 1px solid var(--border-strong);
        }

        .btn-outline:hover {
            color: var(--text-primary);
            border-color: var(--accent-secondary);
            background: rgba(0, 240, 255, 0.06);
        }

        .btn-sm {
            padding: 7px 16px;
            font-size: 0.83rem;
        }

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

        .btn-block {
            width: 100%;
        }

        .mobile-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            background: rgba(0, 240, 255, 0.06);
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            font-size: 1.2rem;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

        .mobile-toggle:hover {
            background: rgba(0, 240, 255, 0.12);
            color: var(--accent-secondary);
        }

        .mobile-nav {
            display: none;
            flex-direction: column;
            gap: var(--spacing-xs);
            padding: var(--spacing-md) var(--spacing-lg) var(--spacing-lg);
            background: rgba(8, 9, 15, 0.97);
            border-bottom: 1px solid var(--border-color);
            position: absolute;
            top: var(--navbar-height);
            left: 0;
            right: 0;
            z-index: 99;
        }

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

        .mobile-nav a {
            color: var(--text-secondary);
            padding: var(--spacing-sm) var(--spacing-md);
            border-radius: var(--radius-md);
            font-size: 0.92rem;
            font-weight: 500;
            transition: all var(--transition-fast);
        }

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

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

        .mobile-nav .nav-actions {
            margin-top: var(--spacing-sm);
            width: 100%;
            justify-content: flex-end;
        }

        /* ============ ARTICLE HERO (SHORT BANNER) ============ */
        .article-hero {
            background-image: linear-gradient(rgba(8, 9, 15, 0.82), rgba(8, 9, 15, 0.92)), url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: var(--spacing-2xl) 0 var(--spacing-xl);
            border-bottom: 1px solid var(--border-color);
            position: relative;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.12), transparent 50%, rgba(0, 240, 255, 0.06));
            pointer-events: none;
        }

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

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: var(--spacing-lg);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

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

        .breadcrumb .separator {
            color: var(--text-muted);
            font-size: 0.7rem;
        }

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

        .article-hero h1 {
            font-size: clamp(1.6rem, 4vw, 2.4rem);
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: var(--spacing-md);
            letter-spacing: -0.02em;
            max-width: 850px;
            color: var(--text-primary);
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
            font-size: 0.88rem;
            color: var(--text-muted);
        }

        .article-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-xs);
        }

        .article-meta .meta-item i {
            color: var(--accent-secondary);
            font-size: 0.9rem;
        }

        .article-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: var(--radius-full);
            font-size: 0.78rem;
            font-weight: 600;
            background: rgba(0, 240, 255, 0.12);
            color: var(--accent-secondary);
            border: 1px solid var(--border-strong);
            letter-spacing: 0.02em;
        }

        /* ============ ARTICLE MAIN LAYOUT ============ */
        .article-main {
            padding: var(--spacing-2xl) 0 var(--spacing-3xl);
            background: var(--bg-primary);
            flex: 1;
        }

        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 320px;
            gap: var(--spacing-2xl);
            align-items: start;
        }

        /* ============ ARTICLE CONTENT ============ */
        .article-content {
            min-width: 0;
            color: var(--text-secondary);
            font-size: 1.02rem;
            line-height: 1.7;
        }

        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: var(--spacing-2xl) 0 var(--spacing-md);
            letter-spacing: -0.01em;
            line-height: 1.3;
        }

        .article-content h2:first-child {
            margin-top: 0;
        }

        .article-content h3 {
            font-size: 1.2rem;
            font-weight: 650;
            color: var(--text-primary);
            margin: var(--spacing-xl) 0 var(--spacing-sm);
            line-height: 1.4;
        }

        .article-content h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            margin: var(--spacing-lg) 0 var(--spacing-xs);
        }

        .article-content p {
            margin-bottom: var(--spacing-md);
        }

        .article-content strong {
            color: var(--text-primary);
            font-weight: 650;
        }

        .article-content em {
            color: var(--accent-secondary);
            font-style: italic;
        }

        .article-content ul, .article-content ol {
            margin: var(--spacing-md) 0 var(--spacing-md) var(--spacing-lg);
            color: var(--text-secondary);
        }

        .article-content li {
            margin-bottom: var(--spacing-xs);
            padding-left: var(--spacing-sm);
        }

        .article-content img {
            border-radius: var(--radius-lg);
            margin: var(--spacing-lg) 0;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
            width: 100%;
        }

        .article-content blockquote {
            border-left: 3px solid var(--accent-secondary);
            padding: var(--spacing-md) var(--spacing-lg);
            margin: var(--spacing-xl) 0;
            background: rgba(0, 240, 255, 0.04);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text-secondary);
            font-style: italic;
            font-size: 0.97rem;
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: var(--spacing-lg) 0;
            font-size: 0.92rem;
            border-radius: var(--radius-md);
            overflow: hidden;
        }

        .article-content table th {
            background: var(--bg-tertiary);
            color: var(--text-primary);
            font-weight: 600;
            text-align: left;
            padding: 12px 16px;
            border-bottom: 1px solid var(--border-strong);
        }

        .article-content table td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--border-color);
            color: var(--text-secondary);
        }

        .article-content table tr:last-child td {
            border-bottom: none;
        }

        .article-content a {
            color: var(--accent-secondary);
            text-decoration: underline;
            text-decoration-color: rgba(0, 240, 255, 0.35);
            text-underline-offset: 3px;
            transition: all var(--transition-fast);
        }

        .article-content a:hover {
            color: var(--text-primary);
            text-decoration-color: var(--accent-secondary);
        }

        .article-content code {
            background: rgba(0, 240, 255, 0.08);
            color: var(--accent-secondary);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.88rem;
            font-family: 'Courier New', monospace;
        }

        .article-content hr {
            border: none;
            border-top: 1px solid var(--border-color);
            margin: var(--spacing-xl) 0;
        }

        /* Article not found */
        .article-not-found {
            background: var(--bg-glass);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: var(--spacing-2xl);
            text-align: center;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
        }

        .article-not-found i {
            font-size: 3rem;
            color: var(--text-muted);
            margin-bottom: var(--spacing-md);
        }

        .article-not-found h2 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: var(--spacing-sm);
        }

        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: var(--spacing-lg);
            font-size: 0.95rem;
        }

        /* ============ SIDEBAR ============ */
        .article-sidebar {
            position: sticky;
            top: calc(var(--navbar-height) + var(--spacing-lg));
            display: flex;
            flex-direction: column;
            gap: var(--spacing-lg);
        }

        .sidebar-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
        }

        .sidebar-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: var(--spacing-md);
            letter-spacing: -0.01em;
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .sidebar-card h3 i {
            color: var(--accent-secondary);
            font-size: 0.9rem;
        }

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

        .sidebar-list a {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            color: var(--text-secondary);
            font-size: 0.88rem;
            padding: 10px 12px;
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }

        .sidebar-list a:hover {
            background: rgba(0, 240, 255, 0.06);
            border-color: var(--border-color);
            color: var(--text-primary);
        }

        .sidebar-list a i {
            color: var(--accent-secondary);
            font-size: 0.78rem;
        }

        .sidebar-cta {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.2), rgba(0, 240, 255, 0.08));
            border: 1px solid var(--border-strong);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            text-align: center;
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
        }

        .sidebar-cta h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: var(--spacing-sm);
        }

        .sidebar-cta p {
            color: var(--text-muted);
            font-size: 0.87rem;
            margin-bottom: var(--spacing-lg);
        }

        /* ============ METRICS SECTION ============ */
        .metrics-section {
            padding: var(--spacing-2xl) 0;
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .section-header {
            margin-bottom: var(--spacing-xl);
        }

        .section-header h2 {
            font-size: clamp(1.4rem, 3vw, 1.9rem);
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            margin-bottom: var(--spacing-sm);
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 0.98rem;
            max-width: 640px;
        }

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

        .metric-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            text-align: left;
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 100%;
            background: linear-gradient(180deg, var(--accent-primary), var(--accent-secondary));
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .metric-card:hover {
            border-color: var(--border-strong);
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }

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

        .metric-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            background: rgba(0, 240, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: var(--spacing-md);
            color: var(--accent-secondary);
            font-size: 1.2rem;
            border: 1px solid var(--border-color);
        }

        .metric-value {
            font-size: 1.75rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            margin-bottom: var(--spacing-xs);
            line-height: 1.2;
        }

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

        /* ============ RELATED SERVICES ============ */
        .services-section {
            padding: var(--spacing-3xl) 0;
            background: var(--bg-primary);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-xl);
            margin-top: var(--spacing-xl);
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            overflow: hidden;
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            position: relative;
        }

        .service-card:hover {
            border-color: var(--border-strong);
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg), 0 0 40px rgba(0, 82, 255, 0.1);
        }

        .service-card-image {
            width: 100%;
            height: 220px;
            object-fit: cover;
            border-bottom: 1px solid var(--border-color);
        }

        .service-card-body {
            padding: var(--spacing-xl);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
            flex: 1;
        }

        .service-card-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            font-size: 0.73rem;
            font-weight: 600;
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent-secondary);
            border: 1px solid var(--border-strong);
            align-self: flex-start;
            letter-spacing: 0.03em;
        }

        .service-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.01em;
            margin-top: var(--spacing-xs);
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.92rem;
            flex: 1;
        }

        .service-card .btn {
            align-self: flex-start;
            margin-top: var(--spacing-sm);
        }

        /* ============ FAQ SECTION ============ */
        .faq-section {
            padding: var(--spacing-3xl) 0;
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
            margin-top: var(--spacing-xl);
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            transition: all var(--transition-base);
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            padding: var(--spacing-lg) var(--spacing-xl);
            cursor: pointer;
            font-weight: 600;
            color: var(--text-primary);
            font-size: 0.97rem;
            transition: all var(--transition-fast);
            user-select: none;
        }

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

        .faq-question .faq-icon {
            color: var(--accent-secondary);
            font-size: 0.85rem;
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow);
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.65;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

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

        /* ============ CTA SECTION ============ */
        .cta-section {
            padding: var(--spacing-3xl) 0;
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.12), rgba(0, 240, 255, 0.04));
            position: relative;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            pointer-events: none;
        }

        .cta-box {
            position: relative;
            z-index: 1;
            background: var(--bg-glass);
            border: 1px solid var(--border-strong);
            border-radius: var(--radius-xl);
            padding: var(--spacing-2xl);
            text-align: center;
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            box-shadow: var(--shadow-lg);
        }

        .cta-box h2 {
            font-size: clamp(1.5rem, 3.5vw, 2rem);
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            margin-bottom: var(--spacing-sm);
        }

        .cta-box p {
            color: var(--text-secondary);
            font-size: 0.98rem;
            max-width: 560px;
            margin: 0 auto var(--spacing-xl);
        }

        .cta-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: var(--spacing-md);
            flex-wrap: wrap;
        }

        /* ============ FOOTER ============ */
        footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: var(--spacing-3xl) 0 0;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-xl);
            padding-bottom: var(--spacing-2xl);
        }

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

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.01em;
        }

        .footer-col p {
            color: var(--text-muted);
            font-size: 0.85rem;
            line-height: 1.65;
        }

        .footer-col a {
            color: var(--text-muted);
            font-size: 0.85rem;
            transition: color var(--transition-fast);
            display: inline-block;
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding: var(--spacing-lg) 0 var(--spacing-xl);
            text-align: center;
        }

        .footer-bottom p {
            color: var(--text-muted);
            font-size: 0.8rem;
            line-height: 1.8;
        }

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

        /* ============ FAB (Floating Action Button) ============ */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 58px;
            height: 58px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 2px solid rgba(0, 240, 255, 0.6);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5), 0 0 30px rgba(0, 240, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0.6;
            transition: all var(--transition-base);
            color: var(--accent-secondary);
            font-size: 1.35rem;
            position: relative;
            animation: fab-breathe 3s ease-in-out infinite;
        }

        .fab::after {
            content: '';
            position: absolute;
            inset: -3px;
            border-radius: 50%;
            border: 2px solid transparent;
            background: linear-gradient(135deg, #CCFF00, #00F0FF, #0052FF) border-box;
            -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            pointer-events: none;
            opacity: 0.7;
        }

        .fab::before {
            content: '';
            position: absolute;
            top: -3px;
            right: -3px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: #FF4500;
            box-shadow: 0 0 10px rgba(255, 69, 0, 0.8);
            animation: fab-dot-blink 1.8s ease-in-out infinite;
            z-index: 2;
            border: 2px solid var(--bg-primary);
        }

        @keyframes fab-breathe {
            0%, 100% {
                transform: translateY(0);
                opacity: 0.6;
            }
            50% {
                transform: translateY(-4px);
                opacity: 0.9;
            }
        }

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

        .fab:hover {
            opacity: 1;
            border-color: rgba(0, 240, 255, 0.9);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.7), 0 0 60px rgba(0, 82, 255, 0.35);
            transform: scale(1.1);
            animation: none;
        }

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

        .fab:focus-visible {
            outline: 2px solid var(--accent-secondary);
            outline-offset: 4px;
            opacity: 1;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: var(--spacing-xl);
            }
            .article-sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
                gap: var(--spacing-md);
            }
            .sidebar-card, .sidebar-cta {
                flex: 1;
                min-width: 240px;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            :root {
                --navbar-height: 64px;
                --spacing-2xl: 32px;
                --spacing-3xl: 40px;
                --spacing-4xl: 48px;
            }
            .header-inner {
                padding: 0 var(--spacing-md);
                gap: var(--spacing-sm);
            }
            .logo {
                font-size: 0.83rem;
            }
            .logo i {
                font-size: 1.1rem;
            }
            .nav-desktop {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .header-inner .nav-actions {
                display: none;
            }
            .mobile-nav .nav-actions {
                display: flex;
            }
            .mobile-nav {
                display: none;
            }
            .mobile-nav.open {
                display: flex;
            }
            .article-hero {
                padding: var(--spacing-xl) 0 var(--spacing-lg);
            }
            .article-hero h1 {
                font-size: 1.4rem;
            }
            .article-main {
                padding: var(--spacing-xl) 0 var(--spacing-2xl);
            }
            .article-content {
                font-size: 0.95rem;
            }
            .article-sidebar {
                flex-direction: column;
            }
            .sidebar-card, .sidebar-cta {
                min-width: auto;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }
            .metric-card {
                padding: var(--spacing-lg);
            }
            .metric-value {
                font-size: 1.4rem;
            }
            .services-grid {
                grid-template-columns: 1fr;
            }
            .cta-box {
                padding: var(--spacing-xl);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .fab {
                width: 50px;
                height: 50px;
                left: 12px;
                bottom: 80px;
                font-size: 1.1rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 var(--spacing-md);
            }
            .article-hero h1 {
                font-size: 1.25rem;
            }
            .article-meta {
                gap: var(--spacing-sm);
                font-size: 0.78rem;
            }
            .metrics-grid {
                grid-template-columns: 1fr;
            }
            .metric-card {
                padding: var(--spacing-md);
                display: flex;
                align-items: center;
                gap: var(--spacing-md);
            }
            .metric-icon {
                margin-bottom: 0;
                width: 38px;
                height: 38px;
                flex-shrink: 0;
                font-size: 1rem;
            }
            .metric-value {
                font-size: 1.2rem;
                margin-bottom: 0;
            }
            .cta-actions {
                flex-direction: column;
                width: 100%;
            }
            .cta-actions .btn {
                width: 100%;
            }
            .login-btn, .mobile-nav .nav-actions .login-btn {
                font-size: 0.78rem;
                padding: 6px 12px;
            }
            .btn-sm {
                padding: 6px 12px;
                font-size: 0.78rem;
            }
            .footer-bottom p {
                font-size: 0.72rem;
            }
            .fab {
                width: 44px;
                height: 44px;
                left: 10px;
                bottom: 70px;
                font-size: 0.95rem;
                border-width: 1.5px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.85);
            --bg-glass: rgba(13, 17, 30, 0.55);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-glow: rgba(0, 240, 255, 0.35);
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #8B95A8;
            --border-color: rgba(0, 240, 255, 0.18);
            --border-glow: rgba(0, 82, 255, 0.45);
            --radius-sm: 10px;
            --radius-md: 18px;
            --radius-lg: 28px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 24px rgba(0, 240, 255, 0.18);
            --shadow-glow-hover: 0 0 42px rgba(0, 240, 255, 0.35);
            --transition-fast: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', sans-serif;
        }

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

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

        body {
            margin: 0;
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.65;
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        a:hover,
        a:focus {
            color: #5cf0ff;
        }

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

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

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

        .section-padding {
            padding-top: 72px;
            padding-bottom: 72px;
        }

        .bg-secondary-section {
            background-color: var(--bg-secondary);
        }

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

        .text-accent-blue {
            color: var(--accent-blue);
        }

        .text-muted-custom {
            color: var(--text-muted);
        }

        .fw-bold {
            font-weight: 700;
        }

        .fw-semibold {
            font-weight: 600;
        }

        .display-4 {
            font-size: clamp(1.7rem, 3.5vw, 2.8rem);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: var(--text-primary);
        }

        .display-5 {
            font-size: clamp(1.4rem, 2.5vw, 2.1rem);
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.01em;
            color: var(--text-primary);
        }

        .section-title {
            font-size: clamp(1.35rem, 2.2vw, 1.8rem);
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 720px;
        }

        .lead-text {
            font-size: 1.08rem;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* ============ HEADER / NAV ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(8, 9, 15, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            transition: all var(--transition-normal);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.6);
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1rem;
            color: var(--text-primary);
            letter-spacing: -0.01em;
            max-width: 520px;
            flex-shrink: 1;
        }

        .logo i {
            color: var(--accent-cyan);
            font-size: 1.6rem;
            filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.5));
        }

        .logo span {
            line-height: 1.3;
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 24px;
        }

        .nav-desktop a {
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            transition: color var(--transition-fast), text-shadow var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
            transition: width var(--transition-normal);
        }

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

        .nav-desktop a:hover::after,
        .nav-desktop a.active::after {
            width: 100%;
        }

        .nav-desktop a.active {
            color: var(--accent-cyan);
            font-weight: 600;
        }

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

        .login-btn {
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 600;
            padding: 10px 16px;
            border-radius: 10px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .login-btn:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.07);
        }

        .btn {
            border-radius: 12px;
            padding: 12px 28px;
            font-weight: 700;
            font-size: 0.95rem;
            letter-spacing: 0.01em;
            transition: all var(--transition-fast);
            border: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #FFFFFF;
            box-shadow: 0 4px 18px rgba(0, 82, 255, 0.4);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            box-shadow: 0 6px 32px rgba(0, 240, 255, 0.55);
            transform: translateY(-2px);
            color: #FFFFFF;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 12px rgba(0, 82, 255, 0.35);
        }

        .btn-outline-cyan {
            background: transparent;
            border: 1.5px solid var(--accent-cyan);
            color: var(--accent-cyan);
        }

        .btn-outline-cyan:hover {
            background: rgba(0, 240, 255, 0.12);
            color: var(--accent-cyan);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.3);
        }

        .btn-sm {
            padding: 9px 18px;
            font-size: 0.88rem;
            border-radius: 10px;
        }

        .btn-lg {
            padding: 16px 34px;
            font-size: 1.05rem;
            border-radius: 16px;
        }

        .btn-glow {
            animation: btnPulse 2.2s ease-in-out infinite;
        }

        @keyframes btnPulse {
            0%, 100% {
                box-shadow: 0 4px 18px rgba(0, 82, 255, 0.4);
            }
            50% {
                box-shadow: 0 4px 40px rgba(0, 240, 255, 0.65);
            }
        }

        .mobile-toggle {
            display: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            padding: 8px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
        }

        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.12);
        }

        .mobile-nav {
            display: none;
            flex-direction: column;
            padding: 12px 20px 20px;
            gap: 6px;
            background: rgba(8, 9, 15, 0.98);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
        }

        .mobile-nav a {
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 10px 12px;
            border-radius: 8px;
            transition: all var(--transition-fast);
        }

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

        .mobile-nav .nav-actions {
            padding-top: 10px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 6px;
            display: flex;
            gap: 10px;
        }

        /* ============ HERO ============ */
        .hero-section {
            position: relative;
            padding-top: 140px;
            padding-bottom: 70px;
            background: var(--bg-primary);
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -180px;
            right: -120px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.12), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -200px;
            left: -160px;
            width: 520px;
            height: 520px;
            background: radial-gradient(circle, rgba(0, 82, 255, 0.15), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .flash-sale-bar {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.15), rgba(0, 82, 255, 0.2));
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 14px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 32px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .flash-sale-bar .flash-label {
            font-weight: 700;
            color: var(--accent-cyan);
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.92rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .flash-sale-bar .flash-label i {
            animation: flashBlink 1.2s ease-in-out infinite;
        }

        @keyframes flashBlink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.35; }
        }

        .flash-sale-bar .flash-text {
            color: var(--text-secondary);
            font-size: 0.92rem;
        }

        .countdown-timer {
            display: flex;
            align-items: center;
            gap: 6px;
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--text-primary);
        }

        .countdown-timer .timer-unit {
            background: rgba(0, 0, 0, 0.55);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 6px 10px;
            font-weight: 800;
            color: var(--accent-cyan);
            min-width: 42px;
            text-align: center;
            font-variant-numeric: tabular-nums;
        }

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

        .hero-title {
            font-size: clamp(1.9rem, 4vw, 2.9rem);
            font-weight: 800;
            line-height: 1.18;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

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

        .hero-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 620px;
            margin-bottom: 28px;
        }

        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 26px;
        }

        .badge-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            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;
            padding: 7px 14px;
            border-radius: 999px;
            white-space: nowrap;
        }

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

        .hero-visual {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-visual img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card), var(--shadow-glow);
            max-width: 100%;
            height: auto;
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 30px;
        }

        .hero-stat-item {
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-color);
            border-radius: 14px;
            padding: 14px 20px;
            flex: 1;
            min-width: 120px;
            text-align: left;
        }

        .hero-stat-item .stat-number {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent-cyan);
            letter-spacing: -0.01em;
        }

        .hero-stat-item .stat-label {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* ============ CARDS / COMPONENTS ============ */
        .glass-card {
            background: var(--bg-glass);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 26px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
        }

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

        .data-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all var(--transition-normal);
            text-align: left;
        }

        .data-card:hover {
            border-color: rgba(0, 240, 255, 0.45);
            box-shadow: 0 0 24px rgba(0, 240, 255, 0.22);
        }

        .data-card .data-icon {
            font-size: 2rem;
            color: var(--accent-cyan);
            margin-bottom: 12px;
        }

        .data-card .data-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
        }

        .data-card .data-unit {
            font-size: 1rem;
            color: var(--accent-cyan);
            font-weight: 600;
        }

        .data-card .data-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        .service-row {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            padding: 20px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            text-align: left;
        }

        .service-row:last-child {
            border-bottom: none;
        }

        .service-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--accent-cyan);
        }

        .service-info h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .service-info p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 0;
        }

        .comparison-table-wrapper {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            background: var(--bg-card);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 680px;
            font-size: 0.92rem;
        }

        .comparison-table thead th {
            background: rgba(0, 240, 255, 0.06);
            color: var(--accent-cyan);
            font-weight: 700;
            padding: 16px 18px;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
            white-space: nowrap;
        }

        .comparison-table tbody td {
            padding: 15px 18px;
            color: var(--text-secondary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            text-align: left;
        }

        .comparison-table tbody tr:last-child td {
            border-bottom: none;
        }

        .comparison-table tbody tr:hover td {
            background: rgba(0, 240, 255, 0.03);
        }

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

        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 999px;
        }

        .status-badge.success {
            background: rgba(34, 197, 94, 0.12);
            color: #4ade80;
            border: 1px solid rgba(34, 197, 94, 0.3);
        }

        .status-badge.warning {
            background: rgba(245, 158, 11, 0.12);
            color: #fbbf24;
            border: 1px solid rgba(245, 158, 11, 0.3);
        }

        .status-badge.info {
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 240, 255, 0.3);
        }

        .promo-tag {
            display: inline-block;
            background: linear-gradient(135deg, #FF6B35, #FF9F1C);
            color: #FFFFFF;
            font-size: 0.72rem;
            font-weight: 800;
            padding: 4px 10px;
            border-radius: 6px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 820px;
            margin: 0;
            text-align: left;
        }

        .faq-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 16px 0;
        }

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

        .faq-question {
            font-size: 1.02rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 10px;
            cursor: pointer;
            transition: color var(--transition-fast);
        }

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

        .faq-question .faq-toggle-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(0, 240, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            color: var(--accent-cyan);
            transition: transform var(--transition-fast);
        }

        .faq-answer {
            font-size: 0.93rem;
            color: var(--text-secondary);
            line-height: 1.7;
            padding-left: 34px;
            margin-bottom: 0;
        }

        /* ============ CTA FORM ============ */
        .cta-section {
            position: relative;
            overflow: hidden;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            top: 50%;
            right: -150px;
            transform: translateY(-50%);
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.08), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-panel {
            position: relative;
            z-index: 2;
            background: var(--bg-glass);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            box-shadow: var(--shadow-card), var(--shadow-glow);
        }

        .form-control {
            background: rgba(0, 0, 0, 0.4);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 12px;
            color: var(--text-primary);
            padding: 14px 18px;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
        }

        .form-control:focus {
            background: rgba(0, 0, 0, 0.55);
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.15);
            color: var(--text-primary);
        }

        .form-control::placeholder {
            color: var(--text-muted);
        }

        .form-label {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-secondary);
            margin-bottom: 6px;
            display: block;
            text-align: left;
        }

        .form-select {
            background: rgba(0, 0, 0, 0.4);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 12px;
            color: var(--text-primary);
            padding: 14px 18px;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
        }

        .form-select:focus {
            background: rgba(0, 0, 0, 0.55);
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.15);
            color: var(--text-primary);
        }

        /* ============ FAB ============ */
        .fab-cyber {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 1070;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 18px;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            position: fixed;
            cursor: pointer;
            opacity: 0.6;
            transition: all var(--transition-normal);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
            overflow: hidden;
        }

        .fab-cyber::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 20px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue), var(--accent-cyan));
            z-index: -1;
            animation: fabBorderFlow 3s linear infinite;
            background-size: 300% 300%;
        }

        @keyframes fabBorderFlow {
            0% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
            100% { background-position: 0% 50%; }
        }

        .fab-cyber:hover {
            opacity: 1;
            transform: scale(1.08);
            box-shadow: 0 0 32px rgba(0, 240, 255, 0.55);
        }

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

        .fab-cyber i {
            font-size: 1.35rem;
            color: var(--accent-cyan);
            position: relative;
            z-index: 2;
        }

        .fab-cyber .fab-notification {
            position: absolute;
            top: 6px;
            right: 6px;
            width: 10px;
            height: 10px;
            background: #FF007F;
            border-radius: 50%;
            box-shadow: 0 0 8px #FF007F;
            animation: fabPulse 1.5s ease-in-out infinite;
            z-index: 3;
        }

        @keyframes fabPulse {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.45; transform: scale(1.35); }
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            padding-top: 56px;
            padding-bottom: 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
            gap: 36px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
        }

        .footer-col p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 8px;
        }

        .footer-col a {
            display: block;
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 8px;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: space-between;
            align-items: center;
        }

        .footer-bottom p {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        .footer-bottom .domain {
            color: var(--text-secondary);
            font-weight: 600;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .header-inner {
                min-height: 64px;
            }
            .logo {
                font-size: 0.85rem;
                max-width: 380px;
            }
            .nav-desktop {
                gap: 16px;
            }
            .nav-desktop a {
                font-size: 0.87rem;
            }
        }

        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .mobile-nav.show {
                display: flex;
            }
            .nav-actions .login-btn {
                display: none;
            }
            .nav-actions .btn-primary {
                display: inline-flex;
            }
            .mobile-nav .nav-actions .login-btn {
                display: inline-flex;
            }
            .hero-section {
                padding-top: 110px;
                padding-bottom: 50px;
            }
            .section-padding {
                padding-top: 48px;
                padding-bottom: 48px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .cta-panel {
                padding: 32px 22px;
            }
            .flash-sale-bar {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-stats {
                flex-direction: column;
            }
            .hero-stat-item {
                min-width: 100%;
            }
            .fab-cyber {
                left: 12px;
                bottom: 80px;
                width: 50px;
                height: 50px;
                border-radius: 16px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }
            .logo {
                font-size: 0.75rem;
                max-width: 200px;
                gap: 6px;
            }
            .logo i {
                font-size: 1.2rem;
            }
            .btn-lg {
                padding: 13px 22px;
                font-size: 0.95rem;
                border-radius: 12px;
            }
            .hero-title {
                font-size: 1.5rem;
            }
            .hero-desc {
                font-size: 0.92rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .data-card .data-number {
                font-size: 1.8rem;
            }
            .comparison-table-wrapper {
                border-radius: 12px;
            }
            .cta-panel {
                padding: 24px 16px;
            }
            .glass-card {
                padding: 18px;
            }
        }