/* roulang page: index */
:root {
            --bg: #08090f;
            --bg2: #0d111e;
            --surface: rgba(13, 17, 30, 0.72);
            --surface-strong: rgba(19, 25, 45, 0.9);
            --primary: #0052ff;
            --primary-hover: #1a6aff;
            --accent: #00f0ff;
            --text: #ffffff;
            --text-muted: #cbd5e1;
            --text-soft: #94a3b8;
            --border: rgba(0, 240, 255, 0.15);
            --border-glow: rgba(0, 240, 255, 0.5);
            --radius-sm: 10px;
            --radius-md: 18px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.25);
            --shadow-glow-lg: 0 0 40px rgba(0, 82, 255, 0.35);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Be Vietnam Pro', 'Segoe UI', system-ui, -apple-system, sans-serif;
        }

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

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

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

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

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

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

        button {
            cursor: pointer;
            background: none;
        }

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

        /* ===== NAVIGATION ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(8, 9, 15, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.08);
            transition: var(--transition);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
            gap: 24px;
        }

        .logo {
            flex-shrink: 0;
        }

        .logo a {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            font-weight: 700;
            font-size: 1.15rem;
            letter-spacing: -0.02em;
            color: var(--text);
            line-height: 1.3;
            transition: var(--transition);
        }

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

        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: #fff;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.4);
            flex-shrink: 0;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            justify-content: flex-end;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 10px 16px;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            white-space: nowrap;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .nav-link:hover,
        .nav-link:focus-visible {
            color: var(--accent);
            background: rgba(0, 240, 255, 0.08);
            border-color: var(--border);
            outline: none;
        }

        .nav-link.active {
            color: #fff;
            background: rgba(0, 82, 255, 0.3);
            border-color: var(--border-glow);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.2);
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border);
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--text);
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        /* ===== HERO ===== */
        .hero {
            position: relative;
            padding: 140px 0 90px;
            min-height: 90vh;
            display: flex;
            align-items: center;
            background: 
                linear-gradient(135deg, rgba(8,9,15,0.95) 0%, rgba(0,82,255,0.35) 100%),
                url('/assets/images/backpic/back-1.jpg') center/cover no-repeat fixed;
            background-color: var(--bg);
            overflow: hidden;
        }

        .hero::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at 20% 30%, rgba(0,240,255,0.12) 0%, transparent 50%);
            pointer-events: none;
            z-index: 1;
        }

        .hero-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 60px;
            align-items: center;
        }

        .hero-content {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid var(--border-glow);
            border-radius: 999px;
            padding: 8px 18px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 0.01em;
            width: fit-content;
        }

        .hero-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 12px var(--accent);
        }

        .hero h1 {
            font-size: clamp(2.4rem, 6vw, 4.2rem);
            font-weight: 800;
            letter-spacing: -0.03em;
            line-height: 1.15;
            color: #fff;
        }

        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--accent), #7dd3fc);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .hero-description {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 560px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 8px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 28px;
            border-radius: 14px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border: 1px solid transparent;
            letter-spacing: 0.01em;
        }

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

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), #0040c0);
            color: #fff;
            box-shadow: 0 8px 24px rgba(0, 82, 255, 0.4);
            border: 1px solid rgba(0, 240, 255, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 34px rgba(0, 82, 255, 0.55);
            background: linear-gradient(135deg, var(--primary-hover), #0056e0);
        }

        .btn-outline {
            background: rgba(255, 255, 255, 0.04);
            color: var(--accent);
            border: 2px solid rgba(0, 240, 255, 0.4);
            backdrop-filter: blur(12px);
        }

        .btn-outline:hover {
            background: rgba(0, 240, 255, 0.12);
            border-color: var(--accent);
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }

        .hero-stats {
            display: flex;
            gap: 28px;
            margin-top: 12px;
            flex-wrap: wrap;
        }

        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .hero-stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .hero-stat-label {
            font-size: 0.8rem;
            color: var(--text-soft);
            letter-spacing: 0.02em;
        }

        .hero-visual {
            display: flex;
            flex-direction: column;
            gap: 28px;
            align-items: center;
        }

        .progress-ring-wrap {
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        .progress-ring {
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: conic-gradient(var(--accent) 0deg 324deg, rgba(255,255,255,0.08) 324deg 360deg);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.35);
            transition: var(--transition);
        }

        .progress-ring:hover {
            transform: scale(1.01);
            box-shadow: 0 0 60px rgba(0, 240, 255, 0.5);
        }

        .progress-ring-inner {
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: var(--bg2);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 4px;
        }

        .progress-ring-inner .value {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            line-height: 1;
        }

        .progress-ring-inner .label {
            font-size: 0.7rem;
            color: var(--text-muted);
            letter-spacing: 0.08em;
            text-transform: uppercase;
        }

        .tier-preview {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 14px;
            width: 100%;
        }

        .tier-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 16px 12px;
            text-align: center;
            backdrop-filter: blur(12px);
            transition: var(--transition);
        }

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

        .tier-card .tier-icon {
            font-size: 1.6rem;
            color: var(--accent);
            margin-bottom: 8px;
        }

        .tier-card .tier-name {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-muted);
            margin-bottom: 4px;
        }

        .tier-card .tier-support {
            font-size: 0.85rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .tier-card .btn-mini {
            padding: 8px 12px;
            border-radius: 8px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(0, 82, 255, 0.2);
            border: 1px solid var(--border-glow);
            color: var(--accent);
            transition: var(--transition);
            width: 100%;
        }

        .tier-card .btn-mini:hover {
            background: rgba(0, 82, 255, 0.4);
            box-shadow: var(--shadow-glow);
        }

        /* ===== SECTION BASE ===== */
        .section {
            padding: 80px 0;
            position: relative;
        }

        .section:nth-child(even) {
            background: rgba(13, 17, 30, 0.5);
        }

        .section-header {
            max-width: 720px;
            margin-bottom: 48px;
        }

        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--accent);
            margin-bottom: 16px;
        }

        .section-title {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.25;
            color: #fff;
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 640px;
        }

        .grid-2, .grid-3, .grid-4 {
            display: grid;
            gap: 24px;
        }

        .grid-2 { grid-template-columns: repeat(2, 1fr); }
        .grid-3 { grid-template-columns: repeat(3, 1fr); }
        .grid-4 { grid-template-columns: repeat(4, 1fr); }

        /* ===== GUARANTEE SECTION ===== */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .guarantee-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            backdrop-filter: blur(12px);
            display: flex;
            flex-direction: column;
            gap: 12px;
            transition: var(--transition);
        }

        .guarantee-item:hover {
            border-color: var(--border-glow);
            transform: translateY(-6px);
            box-shadow: var(--shadow-glow);
        }

        .guarantee-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(0, 240, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent);
        }

        .guarantee-item h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
        }

        .guarantee-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== CATEGORY SECTION ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .category-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--surface);
            border: 1px solid var(--border);
            min-height: 300px;
            display: flex;
            align-items: flex-end;
            transition: var(--transition);
            isolation: isolate;
        }

        .category-card::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(8,9,15,0.9) 0%, rgba(8,9,15,0.3) 60%, transparent 100%);
            z-index: 1;
        }

        .category-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
            transition: transform 0.6s ease;
        }

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

        .category-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow-lg);
            transform: translateY(-8px);
        }

        .category-card-content {
            position: relative;
            z-index: 2;
            padding: 28px 24px;
            width: 100%;
        }

        .category-card-content h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .category-card-content p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .category-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--accent);
            transition: var(--transition);
        }

        .category-link i {
            transition: transform 0.3s ease;
        }

        .category-link:hover i {
            transform: translateX(4px);
        }

        /* ===== HOT TOPICS ===== */
        .topics-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 24px;
        }

        .topic-tag {
            padding: 10px 20px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .topic-tag:hover {
            background: rgba(0, 240, 255, 0.1);
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }

        /* ===== RESOURCE LIST ===== */
        .resource-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            max-width: 800px;
        }

        .resource-item {
            display: flex;
            gap: 20px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 24px 22px;
            transition: var(--transition);
            align-items: flex-start;
            backdrop-filter: blur(10px);
        }

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

        .resource-number {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(0, 82, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--accent);
            border: 1px solid var(--border);
        }

        .resource-content h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .resource-content p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== NEWS SECTION ===== */
        .news-layout {
            display: grid;
            grid-template-columns: 1fr 0.45fr;
            gap: 32px;
            align-items: start;
        }

        .news-main-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 20px 22px;
            backdrop-filter: blur(10px);
            transition: var(--transition);
            display: block;
        }

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

        .news-item-title {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .news-item-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.78rem;
            color: var(--text-soft);
        }

        .news-item-author, .news-item-date {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .news-item-excerpt {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-top: 10px;
            line-height: 1.6;
        }

        .news-sidebar {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            backdrop-filter: blur(12px);
        }

        .news-sidebar h3 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border);
        }

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

        .news-side-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.88rem;
            color: var(--text-muted);
            transition: var(--transition);
        }

        .news-side-item i {
            color: var(--accent);
            font-size: 0.8rem;
        }

        .news-side-item:hover {
            color: var(--accent);
        }

        /* ===== CHANGELOG ===== */
        .changelog-list {
            max-width: 720px;
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: relative;
        }

        .changelog-item {
            display: flex;
            gap: 18px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 20px 22px;
            transition: var(--transition);
        }

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

        .changelog-version {
            flex-shrink: 0;
            font-weight: 700;
            color: var(--accent);
            padding: 4px 12px;
            background: rgba(0, 240, 255, 0.1);
            border-radius: 6px;
            font-size: 0.8rem;
            height: fit-content;
        }

        .changelog-content h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }

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

        /* ===== DOWNLOAD CTA ===== */
        .download-cta {
            background: linear-gradient(135deg, rgba(0,82,255,0.25), rgba(0,240,255,0.15)), url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 60px 40px;
            text-align: left;
            backdrop-filter: blur(12px);
            box-shadow: var(--shadow-glow-lg);
        }

        .download-cta h2 {
            font-size: clamp(1.8rem, 4vw, 2.5rem);
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }

        .download-cta p {
            font-size: 1rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 600px;
            margin-bottom: 28px;
        }

        .download-cta .btn {
            padding: 16px 32px;
            font-size: 1rem;
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: rgba(6, 7, 12, 0.95);
            border-top: 1px solid var(--border);
            padding: 48px 0 28px;
            position: relative;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 0.8fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-top: 16px;
            max-width: 340px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

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

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

        .footer-col ul a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }

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

        .footer-bottom .disclaimer {
            font-size: 0.78rem;
            color: var(--text-soft);
            max-width: 600px;
            line-height: 1.5;
        }

        /* ===== FAB ===== */
        .floating-fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 90;
        }

        .fab-button {
            width: 56px;
            height: 56px;
            border-radius: 18px;
            background: rgba(8, 9, 15, 0.75);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(8,9,15,0.75), rgba(8,9,15,0.75)), linear-gradient(135deg, #00f0ff, #0052ff);
            background-origin: border-box;
            background-clip: padding-box, border-box;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
            transition: var(--transition);
            position: relative;
        }

        .fab-button:hover {
            transform: scale(1.08);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.5);
            color: #fff;
        }

        .fab-button::after {
            content: '';
            position: absolute;
            top: -4px;
            right: -4px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: #ff007f;
            border: 2px solid var(--bg);
            box-shadow: 0 0 10px #ff007f;
            animation: blink 1.4s infinite;
        }

        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 48px;
            }
            .hero-visual {
                flex-direction: row;
                flex-wrap: wrap;
                justify-content: center;
            }
            .tier-preview {
                max-width: 500px;
            }
            .grid-3 { grid-template-columns: repeat(2, 1fr); }
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
            .news-layout {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 68px;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-menu {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(8,9,15,0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: stretch;
                padding: 20px;
                border-bottom: 1px solid var(--border);
                display: none;
                gap: 4px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-link {
                padding: 14px 16px;
                border-radius: 10px;
                font-size: 1rem;
                justify-content: flex-start;
            }
            .hero {
                padding: 120px 0 60px;
                min-height: auto;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero-stats {
                gap: 20px;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .grid-3, .grid-2, .grid-4 {
                grid-template-columns: 1fr;
            }
            .section {
                padding: 56px 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .download-cta {
                padding: 40px 24px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-actions {
                flex-direction: column;
            }
            .btn {
                width: 100%;
                text-align: center;
            }
            .progress-ring {
                width: 160px;
                height: 160px;
            }
            .progress-ring-inner {
                width: 120px;
                height: 120px;
            }
            .progress-ring-inner .value {
                font-size: 1.8rem;
            }
            .tier-preview {
                grid-template-columns: 1fr;
                gap: 10px;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #0D1117;
            --bg-secondary: #12171F;
            --bg-tertiary: #161C26;
            --bg-card-glass: rgba(22, 28, 38, 0.72);
            --bg-card-solid: #1A202C;
            --accent-gold: #F0E68C;
            --accent-gold-deep: #D4AC0D;
            --accent-platinum: #E5E8E8;
            --accent-blue: #3B82F6;
            --accent-blue-glow: rgba(59, 130, 246, 0.45);
            --text-primary: #F5F5F7;
            --text-secondary: #C5CAD3;
            --text-muted: #8892A0;
            --border-subtle: rgba(229, 232, 232, 0.10);
            --border-medium: rgba(229, 232, 232, 0.18);
            --border-gold: rgba(240, 230, 140, 0.35);
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.45);
            --shadow-glow-gold: 0 0 24px rgba(240, 230, 140, 0.22);
            --shadow-glow-blue: 0 0 20px rgba(59, 130, 246, 0.35);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-heading: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
            --font-body: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
        }

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

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

        body {
            font-family: var(--font-body);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.65;
            min-height: 100vh;
            background-image:
                radial-gradient(ellipse at 50% 0%, rgba(59, 130, 246, 0.06) 0%, transparent 70%),
                radial-gradient(ellipse at 80% 20%, rgba(240, 230, 140, 0.04) 0%, transparent 55%),
                radial-gradient(ellipse at 20% 60%, rgba(59, 130, 246, 0.03) 0%, transparent 50%);
            background-attachment: fixed;
        }

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

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

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

        ul {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(13, 17, 23, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background 0.3s ease;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 62px;
            gap: 20px;
        }

        .logo a {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.08rem;
            color: var(--text-primary);
            white-space: nowrap;
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(240, 230, 140, 0.18), rgba(212, 172, 13, 0.08));
            border: 1.5px solid var(--border-gold);
            color: var(--accent-gold);
            font-size: 1rem;
            flex-shrink: 0;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-link {
            display: inline-block;
            padding: 8px 15px;
            border-radius: 20px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--accent-gold);
            background: rgba(240, 230, 140, 0.07);
        }

        .nav-toggle {
            display: none;
            background: none;
            color: var(--text-primary);
            font-size: 1.4rem;
            padding: 6px 10px;
            border-radius: 8px;
            border: 1px solid var(--border-subtle);
        }

        /* Breadcrumb */
        .breadcrumb-wrap {
            padding: 18px 0 6px;
            background: transparent;
        }

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

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

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

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

        .breadcrumb .current {
            color: var(--accent-platinum);
            font-weight: 500;
            max-width: 320px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* Article Hero */
        .article-hero {
            padding: 32px 0 24px;
        }

        .article-hero-inner {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            align-items: flex-start;
        }

        .article-hero-content {
            flex: 1 1 520px;
            min-width: 0;
        }

        .article-hero-content h1 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }

        .article-meta-row {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .article-meta-row .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .article-meta-row .meta-item i {
            color: var(--accent-gold);
            font-size: 0.78rem;
        }

        .article-category-tag {
            display: inline-block;
            padding: 5px 13px;
            border-radius: 16px;
            font-size: 0.8rem;
            font-weight: 600;
            background: rgba(240, 230, 140, 0.10);
            color: var(--accent-gold);
            border: 1px solid var(--border-gold);
        }

        .article-category-tag:hover {
            background: rgba(240, 230, 140, 0.18);
        }

        .badge-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 18px;
        }

        .badge-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 13px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.01em;
        }

        .badge-winrate {
            background: rgba(240, 230, 140, 0.12);
            color: var(--accent-gold);
            border: 1px solid rgba(240, 230, 140, 0.3);
        }

        .badge-verified {
            background: rgba(59, 130, 246, 0.10);
            color: #60A5FA;
            border: 1px solid rgba(59, 130, 246, 0.28);
        }

        .badge-easy {
            background: rgba(34, 197, 94, 0.09);
            color: #4ADE80;
            border: 1px solid rgba(34, 197, 94, 0.25);
        }

        .article-hero-visual {
            flex: 0 0 340px;
            max-width: 100%;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-card-glass);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-medium);
            box-shadow: var(--shadow-card);
            position: relative;
        }

        .article-hero-visual img {
            width: 100%;
            height: 260px;
            object-fit: cover;
            display: block;
        }

        .article-hero-visual .img-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(13, 17, 23, 0.55) 0%, transparent 50%);
            pointer-events: none;
        }

        /* Article Body */
        .article-body-wrap {
            padding: 20px 0 40px;
        }

        .article-layout {
            display: flex;
            gap: 36px;
            align-items: flex-start;
        }

        .article-main {
            flex: 1 1 680px;
            min-width: 0;
        }

        .article-content {
            font-size: 1.05rem;
            line-height: 1.78;
            color: var(--text-secondary);
            text-align: left;
        }

        .article-content h2 {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 32px 0 14px;
            padding-bottom: 8px;
            border-bottom: 1px solid var(--border-subtle);
        }

        .article-content h3 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 24px 0 10px;
        }

        .article-content p {
            margin-bottom: 16px;
        }

        .article-content ul,
        .article-content ol {
            margin: 10px 0 18px 22px;
            color: var(--text-secondary);
        }

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

        .article-content strong {
            color: var(--accent-platinum);
            font-weight: 700;
        }

        .article-content blockquote {
            border-left: 3px solid var(--accent-gold);
            padding: 14px 18px;
            margin: 20px 0;
            background: rgba(240, 230, 140, 0.04);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: 18px 0;
        }

        /* Sidebar */
        .article-sidebar {
            flex: 0 0 300px;
            max-width: 100%;
            position: sticky;
            top: 82px;
        }

        .sidebar-card {
            background: var(--bg-card-glass);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-medium);
            border-radius: var(--radius-lg);
            padding: 22px 20px;
            box-shadow: var(--shadow-card);
            margin-bottom: 20px;
        }

        .sidebar-card h4 {
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-card h4 i {
            font-size: 0.9rem;
        }

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

        .param-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 8px 0;
            border-bottom: 1px solid var(--border-subtle);
            font-size: 0.9rem;
        }

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

        .param-label {
            color: var(--text-muted);
            font-size: 0.84rem;
        }

        .param-value {
            color: var(--accent-platinum);
            font-weight: 600;
            font-size: 0.9rem;
            text-align: right;
        }

        .param-value.highlight {
            color: var(--accent-gold);
            font-weight: 700;
            font-size: 1rem;
        }

        /* Screenshot Carousel */
        .screenshot-section {
            padding: 36px 0;
        }

        .screenshot-section .section-label {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .screenshot-section .section-label i {
            color: var(--accent-gold);
        }

        .carousel-track-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: rgba(240, 230, 140, 0.25) transparent;
            padding-bottom: 8px;
        }

        .carousel-track-wrap::-webkit-scrollbar {
            height: 5px;
        }

        .carousel-track-wrap::-webkit-scrollbar-track {
            background: transparent;
        }

        .carousel-track-wrap::-webkit-scrollbar-thumb {
            background: rgba(240, 230, 140, 0.25);
            border-radius: 10px;
        }

        .carousel-track {
            display: flex;
            gap: 16px;
            width: max-content;
        }

        .carousel-card {
            flex: 0 0 280px;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-card-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-medium);
            box-shadow: var(--shadow-card);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

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

        .carousel-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .carousel-card .carousel-caption {
            padding: 12px 14px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            font-weight: 500;
            text-align: left;
        }

        .carousel-card .carousel-step {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 10px;
            font-size: 0.72rem;
            font-weight: 700;
            background: rgba(240, 230, 140, 0.15);
            color: var(--accent-gold);
            margin-bottom: 6px;
        }

        /* CTA Bar */
        .cta-bar {
            margin: 40px 0 24px;
            padding: 32px 28px;
            border-radius: var(--radius-lg);
            background: linear-gradient(135deg, rgba(22, 28, 38, 0.85), rgba(30, 36, 48, 0.8));
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-gold);
            box-shadow: var(--shadow-card), var(--shadow-glow-gold);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 22px;
            justify-content: space-between;
        }

        .cta-bar-text {
            flex: 1 1 300px;
            min-width: 0;
        }

        .cta-bar-text h3 {
            font-family: var(--font-heading);
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .cta-bar-text p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        .btn-glow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 28px;
            font-size: 0.95rem;
            font-weight: 700;
            background: linear-gradient(135deg, #F0E68C 0%, #D4AC0D 60%, #B8960F 100%);
            color: #1A1A1A;
            border: none;
            box-shadow: 0 0 22px rgba(240, 230, 140, 0.35), 0 4px 16px rgba(0, 0, 0, 0.3);
            transition: all 0.3s ease;
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .btn-glow:hover {
            box-shadow: 0 0 36px rgba(240, 230, 140, 0.55), 0 6px 24px rgba(0, 0, 0, 0.4);
            transform: translateY(-2px);
        }

        .btn-glow:active {
            transform: translateY(1px);
            box-shadow: 0 0 14px rgba(240, 230, 140, 0.25), 0 2px 8px rgba(0, 0, 0, 0.3);
        }

        /* FAQ */
        .faq-section {
            padding: 36px 0;
        }

        .faq-section .section-label {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

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

        .faq-item {
            border: 1px solid var(--border-medium);
            border-radius: var(--radius-md);
            background: var(--bg-card-glass);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            overflow: hidden;
            transition: border-color 0.3s ease;
        }

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

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 16px 20px;
            background: none;
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--text-primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            cursor: pointer;
            transition: color 0.25s ease;
        }

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

        .faq-question i {
            font-size: 0.75rem;
            color: var(--accent-gold);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 20px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

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

        /* Related */
        .related-section {
            padding: 30px 0 44px;
        }

        .related-section .section-label {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 16px;
        }

        .related-card {
            border-radius: var(--radius-md);
            background: var(--bg-card-glass);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border-medium);
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .related-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-glow-blue);
            border-color: rgba(59, 130, 246, 0.3);
        }

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

        .related-card-body {
            padding: 14px 16px;
        }

        .related-card-body h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.35;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card-body .meta-sm {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        /* Not Found */
        .not-found-wrap {
            padding: 60px 20px;
            text-align: center;
        }

        .not-found-wrap .icon-404 {
            font-size: 4rem;
            color: var(--accent-gold);
            margin-bottom: 16px;
            opacity: 0.7;
        }

        .not-found-wrap h2 {
            font-family: var(--font-heading);
            font-size: 1.6rem;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .not-found-wrap p {
            color: var(--text-secondary);
            margin-bottom: 22px;
        }

        .not-found-wrap .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 12px 24px;
            border-radius: 24px;
            font-weight: 600;
            background: rgba(240, 230, 140, 0.12);
            color: var(--accent-gold);
            border: 1px solid var(--border-gold);
            transition: all 0.3s ease;
        }

        .not-found-wrap .btn-back:hover {
            background: rgba(240, 230, 140, 0.22);
            box-shadow: var(--shadow-glow-gold);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 28px;
            margin-top: 20px;
        }

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

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.55;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--accent-platinum);
            margin-bottom: 14px;
            letter-spacing: 0.01em;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: color 0.25s ease;
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        .footer-bottom .disclaimer {
            margin-top: 8px;
            font-size: 0.76rem;
            opacity: 0.7;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        /* FAB */
        .fab-royal {
            position: fixed;
            left: 16px;
            bottom: 80px;
            z-index: 50;
            width: 54px;
            height: 54px;
            border-radius: 50%;
            background: radial-gradient(circle at 35% 30%, #3a3520, #1a180e 85%);
            border: 2.5px solid #D4AC0D;
            box-shadow: 0 0 20px rgba(240, 230, 140, 0.28), 0 6px 18px rgba(0, 0, 0, 0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-gold);
            font-size: 1.2rem;
            cursor: pointer;
            opacity: 0.75;
            animation: fab-float 3s ease-in-out infinite;
            transition: all 0.3s ease;
        }

        .fab-royal:hover {
            opacity: 1;
            transform: scale(1.12);
            box-shadow: 0 0 34px rgba(240, 230, 140, 0.5), 0 8px 28px rgba(0, 0, 0, 0.55);
        }

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

        .fab-royal .fab-dot {
            position: absolute;
            top: 6px;
            right: 8px;
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: #D32F2F;
            animation: fab-blink 1.4s ease-in-out infinite;
            box-shadow: 0 0 6px rgba(211, 47, 47, 0.7);
        }

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

        @keyframes fab-blink {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.2;
            }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .article-hero-visual {
                flex: 0 0 280px;
            }
            .article-hero-visual img {
                height: 220px;
            }
            .article-sidebar {
                flex: 0 0 260px;
            }
            .article-hero-content h1 {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 56px;
            }
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 56px;
                left: 0;
                right: 0;
                background: rgba(13, 17, 23, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 12px 16px;
                border-bottom: 1px solid var(--border-medium);
                gap: 4px;
                z-index: 99;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-link {
                width: 100%;
                padding: 11px 15px;
                border-radius: 10px;
                font-size: 0.95rem;
            }
            .article-hero-inner {
                flex-direction: column;
            }
            .article-hero-visual {
                flex: 0 0 auto;
                width: 100%;
            }
            .article-hero-visual img {
                height: 200px;
            }
            .article-layout {
                flex-direction: column;
            }
            .article-sidebar {
                flex: 0 0 auto;
                width: 100%;
                position: static;
                order: -1;
            }
            .article-hero-content h1 {
                font-size: 1.45rem;
            }
            .cta-bar {
                flex-direction: column;
                text-align: left;
                align-items: flex-start;
            }
            .related-grid {
                grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
            }
            .carousel-card {
                flex: 0 0 230px;
            }
            .carousel-card img {
                height: 140px;
            }
            .fab-royal {
                width: 46px;
                height: 46px;
                bottom: 60px;
                left: 10px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .article-hero-content h1 {
                font-size: 1.25rem;
            }
            .article-meta-row {
                gap: 10px;
                font-size: 0.8rem;
            }
            .badge-strip {
                gap: 6px;
            }
            .badge-item {
                font-size: 0.72rem;
                padding: 4px 10px;
            }
            .cta-bar {
                padding: 22px 16px;
            }
            .btn-glow {
                padding: 12px 20px;
                font-size: 0.88rem;
            }
            .related-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .carousel-card {
                flex: 0 0 200px;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 14px 15px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-deep-space: #08090F;
            --bg-cyber-navy: #0D111E;
            --bg-cyber-navy-2: #111827;
            --accent-electric-blue: #0052FF;
            --accent-neon-cyan: #00F0FF;
            --text-white: #FFFFFF;
            --text-cool-silver: #CBD5E1;
            --text-muted: #8A93A6;
            --border-glass: rgba(255, 255, 255, 0.08);
            --border-glass-hover: rgba(0, 240, 255, 0.35);
            --border-electric: rgba(0, 82, 255, 0.45);
            --border-cyan: rgba(0, 240, 255, 0.35);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.45);
            --shadow-glow-blue: 0 0 18px rgba(0, 82, 255, 0.45);
            --shadow-glow-cyan: 0 0 22px rgba(0, 240, 255, 0.3);
            --shadow-glow-both: 0 0 28px rgba(0, 82, 255, 0.35), 0 0 42px rgba(0, 240, 255, 0.2);
            --font-family: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --spacing-section: 5rem;
            --spacing-section-lg: 7rem;
            --transition-fast: 0.22s ease;
            --transition-med: 0.35s ease;
            --transition-slow: 0.55s ease;
        }

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

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

        body {
            font-family: var(--font-family);
            background-color: var(--bg-deep-space);
            color: var(--text-white);
            line-height: 1.6;
            font-size: 16px;
            overflow-x: hidden;
            position: relative;
            min-height: 100vh;
        }

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

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

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

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

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

        ul,
        ol {
            list-style: none;
        }

        /* ========== Container ========== */
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ========== Section spacing ========== */
        .section {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
            position: relative;
        }

        .section-lg {
            padding-top: var(--spacing-section-lg);
            padding-bottom: var(--spacing-section-lg);
        }

        /* ========== Header / Navigation ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-glass);
            padding: 14px 0;
            transition: background var(--transition-med);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.97);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

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

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.15rem;
            color: var(--text-white);
            letter-spacing: -0.3px;
            line-height: 1.25;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }

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

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-electric-blue), var(--accent-neon-cyan));
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
            box-shadow: var(--shadow-glow-cyan);
        }

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

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

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 9px 16px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.92rem;
            color: var(--text-cool-silver);
            white-space: nowrap;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }

        .nav-link:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.06);
            border-color: var(--border-glass);
        }

        .nav-link.active {
            color: var(--accent-neon-cyan);
            background: rgba(0, 240, 255, 0.08);
            border-color: rgba(0, 240, 255, 0.25);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.12);
        }

        /* ========== FAB ========== */
        .fab-cyber {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 1001;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 0, 0, 0.65);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(0, 0, 0, 0.65), rgba(0, 0, 0, 0.65)), linear-gradient(135deg, var(--accent-neon-cyan), var(--accent-electric-blue));
            background-origin: border-box;
            background-clip: padding-box, border-box;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5), 0 0 30px rgba(0, 82, 255, 0.25);
            opacity: 0.6;
            color: var(--accent-neon-cyan);
            font-size: 1.35rem;
            cursor: pointer;
            animation: fab-breathe 3.2s ease-in-out infinite;
            transition: all var(--transition-med);
        }

        .fab-cyber::after {
            content: '';
            position: absolute;
            top: -3px;
            right: -3px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: #ff2d55;
            box-shadow: 0 0 8px rgba(255, 45, 85, 0.9);
            animation: fab-dot-blink 1.6s ease-in-out infinite;
        }

        @keyframes fab-breathe {
            0%, 100% {
                opacity: 0.6;
                transform: translateY(0);
            }
            50% {
                opacity: 0.85;
                transform: translateY(-4px);
            }
        }

        @keyframes fab-dot-blink {
            0%, 100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.4;
                transform: scale(0.7);
            }
        }

        .fab-cyber:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.8), 0 0 52px rgba(0, 82, 255, 0.4);
            border-color: transparent;
        }

        .fab-cyber:active {
            transform: scale(0.95);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.9);
        }

        /* ========== Hero Section ========== */
        .hero-category {
            position: relative;
            padding: 4rem 0 5.5rem;
            background: linear-gradient(165deg, var(--bg-deep-space) 30%, var(--bg-cyber-navy) 70%, var(--bg-cyber-navy-2) 100%);
            overflow: hidden;
            border-bottom: 1px solid var(--border-glass);
        }

        .hero-category::before {
            content: '';
            position: absolute;
            top: -20%;
            right: -15%;
            width: 650px;
            height: 650px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 82, 255, 0.18) 0%, transparent 65%);
            pointer-events: none;
        }

        .hero-category::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.12) 0%, transparent 60%);
            pointer-events: none;
        }

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

        /* Flash Sale Bar */
        .flash-sale-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            background: rgba(0, 0, 0, 0.55);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: var(--radius-md);
            padding: 14px 22px;
            margin-bottom: 2.5rem;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4), inset 0 0 30px rgba(0, 82, 255, 0.06);
        }

        .flash-sale-left {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .flash-sale-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--accent-electric-blue), var(--accent-neon-cyan));
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .flash-sale-label {
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--accent-neon-cyan);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .flash-sale-timer {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-white);
        }

        .timer-box {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 44px;
            height: 40px;
            background: rgba(0, 82, 255, 0.15);
            border: 1px solid rgba(0, 82, 255, 0.35);
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: 1px;
        }

        .timer-sep {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent-neon-cyan);
        }

        .flash-sale-right {
            flex-shrink: 0;
        }

        /* Hero Content */
        .hero-content-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--accent-neon-cyan);
            font-size: 0.82rem;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 1.25rem;
            letter-spacing: 0.4px;
        }

        .hero-title {
            font-size: 2.7rem;
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: -1px;
            color: var(--text-white);
            margin-bottom: 1.25rem;
        }

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

        .hero-desc {
            font-size: 1.06rem;
            color: var(--text-cool-silver);
            line-height: 1.65;
            margin-bottom: 2rem;
            max-width: 520px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 28px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 0.95rem;
            letter-spacing: 0.3px;
            transition: all var(--transition-fast);
            border: none;
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-glow {
            background: linear-gradient(135deg, var(--accent-electric-blue), var(--accent-neon-cyan));
            color: #fff;
            box-shadow: var(--shadow-glow-both);
        }

        .btn-glow:hover {
            box-shadow: 0 0 34px rgba(0, 82, 255, 0.6), 0 0 50px rgba(0, 240, 255, 0.35);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-glow:active {
            transform: translateY(0) scale(0.98);
            box-shadow: var(--shadow-glow-blue);
        }

        .btn-outline-glass {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border-glass);
            color: var(--text-cool-silver);
        }

        .btn-outline-glass:hover {
            border-color: var(--border-cyan);
            color: var(--accent-neon-cyan);
            background: rgba(0, 240, 255, 0.06);
            transform: translateY(-2px);
        }

        /* Hero Product Card */
        .hero-product-wrapper {
            display: flex;
            justify-content: flex-start;
        }

        .hero-product-card {
            background: rgba(13, 17, 30, 0.75);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            overflow: hidden;
            width: 100%;
            max-width: 520px;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-med);
        }

        .hero-product-card:hover {
            box-shadow: var(--shadow-glow-both);
            border-color: var(--border-electric);
        }

        .hero-product-img {
            position: relative;
            height: 240px;
            overflow: hidden;
            background: #000;
        }

        .hero-product-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.85;
            transition: transform var(--transition-slow);
        }

        .hero-product-card:hover .hero-product-img img {
            transform: scale(1.05);
        }

        .hero-product-img::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 70%;
            background: linear-gradient(to top, rgba(13, 17, 30, 0.95), transparent);
            pointer-events: none;
        }

        .hero-product-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 2;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(0, 240, 255, 0.4);
            color: var(--accent-neon-cyan);
            font-size: 0.78rem;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 999px;
            letter-spacing: 0.5px;
        }

        .hero-product-body {
            padding: 1.8rem 1.8rem 2rem;
        }

        .hero-product-title {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 0.6rem;
            line-height: 1.35;
        }

        .hero-product-desc {
            font-size: 0.92rem;
            color: var(--text-cool-silver);
            line-height: 1.6;
            margin-bottom: 1.2rem;
        }

        .hero-product-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 1.4rem;
        }

        .product-price {
            font-size: 1.5rem;
            font-weight: 900;
            color: var(--text-white);
            letter-spacing: -0.5px;
        }

        .product-price-old {
            font-size: 0.95rem;
            color: var(--text-muted);
            text-decoration: line-through;
        }

        .product-badge-discount {
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--accent-neon-cyan);
            font-size: 0.78rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 6px;
        }

        /* ========== Glass Card Utility ========== */
        .glass-card {
            background: rgba(13, 17, 30, 0.65);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            transition: all var(--transition-med);
        }

        .glass-card:hover {
            border-color: var(--border-electric);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 20px rgba(0, 82, 255, 0.12);
            transform: translateY(-3px);
        }

        /* ========== Section Headings ========== */
        .section-heading {
            text-align: left;
            margin-bottom: 2.5rem;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1.2px;
            color: var(--accent-neon-cyan);
            margin-bottom: 0.6rem;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 900;
            color: var(--text-white);
            letter-spacing: -0.5px;
            line-height: 1.25;
            margin-bottom: 0.8rem;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-cool-silver);
            line-height: 1.65;
            max-width: 720px;
        }

        /* ========== Feature Group Cards ========== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .feature-card {
            padding: 2rem 1.8rem;
            border-radius: var(--radius-md);
            background: rgba(13, 17, 30, 0.55);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            transition: all var(--transition-med);
            text-align: left;
            position: relative;
            overflow: hidden;
        }

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

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

        .feature-card:hover {
            border-color: var(--border-electric);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5), 0 0 24px rgba(0, 82, 255, 0.15);
            transform: translateY(-4px);
        }

        .feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(0, 82, 255, 0.12);
            border: 1px solid rgba(0, 82, 255, 0.25);
            color: var(--accent-neon-cyan);
            font-size: 1.4rem;
            margin-bottom: 1.3rem;
            transition: all var(--transition-fast);
        }

        .feature-card:hover .feature-icon {
            background: rgba(0, 240, 255, 0.14);
            border-color: rgba(0, 240, 255, 0.35);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.2);
        }

        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 0.7rem;
            line-height: 1.4;
        }

        .feature-card p {
            font-size: 0.92rem;
            color: var(--text-cool-silver);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ========== Scenario Section ========== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }

        .scenario-item {
            display: flex;
            gap: 1.25rem;
            align-items: flex-start;
            padding: 1.5rem 1.6rem;
            border-radius: var(--radius-md);
            background: rgba(13, 17, 30, 0.5);
            border: 1px solid var(--border-glass);
            transition: all var(--transition-med);
            text-align: left;
        }

        .scenario-item:hover {
            border-color: rgba(0, 82, 255, 0.35);
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
        }

        .scenario-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 82, 255, 0.1);
            color: var(--accent-neon-cyan);
            font-size: 1.15rem;
            border: 1px solid rgba(0, 82, 255, 0.2);
        }

        .scenario-info h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.4rem;
        }

        .scenario-info p {
            font-size: 0.9rem;
            color: var(--text-cool-silver);
            line-height: 1.55;
            margin-bottom: 0;
        }

        /* ========== Process Steps ========== */
        .process-timeline {
            position: relative;
            padding-left: 2rem;
            display: flex;
            flex-direction: column;
            gap: 1.8rem;
        }

        .process-timeline::before {
            content: '';
            position: absolute;
            left: 0;
            top: 4px;
            bottom: 4px;
            width: 2px;
            background: linear-gradient(to bottom, var(--accent-electric-blue), var(--accent-neon-cyan), rgba(0, 240, 255, 0.15));
            border-radius: 2px;
        }

        .process-step {
            position: relative;
            padding-left: 1.25rem;
            text-align: left;
        }

        .process-step::before {
            content: '';
            position: absolute;
            left: -2rem;
            top: 6px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--bg-deep-space);
            border: 3px solid var(--accent-neon-cyan);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.5);
        }

        .process-step-num {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--accent-electric-blue);
            margin-bottom: 0.3rem;
        }

        .process-step h4 {
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 0.4rem;
        }

        .process-step p {
            font-size: 0.92rem;
            color: var(--text-cool-silver);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ========== Stats / Evidence ========== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.2rem;
        }

        .stat-block {
            text-align: left;
            padding: 1.6rem 1.4rem;
            border-radius: var(--radius-md);
            background: rgba(13, 17, 30, 0.55);
            border: 1px solid var(--border-glass);
            transition: all var(--transition-med);
        }

        .stat-block:hover {
            border-color: var(--border-electric);
            box-shadow: 0 4px 22px rgba(0, 0, 0, 0.3);
        }

        .stat-number {
            font-size: 2.3rem;
            font-weight: 900;
            background: linear-gradient(135deg, var(--accent-neon-cyan), var(--accent-electric-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -1px;
            margin-bottom: 0.3rem;
            line-height: 1.1;
        }

        .stat-label {
            font-size: 0.88rem;
            color: var(--text-cool-silver);
            font-weight: 600;
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            text-align: left;
        }

        .faq-item {
            background: rgba(13, 17, 30, 0.55);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 1.2rem 1.5rem;
            font-weight: 700;
            font-size: 0.98rem;
            color: var(--text-white);
            cursor: pointer;
            text-align: left;
            width: 100%;
            background: none;
            border: none;
            transition: color var(--transition-fast);
        }

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

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

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-med), padding var(--transition-fast);
            padding: 0 1.5rem;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 1.5rem 1.4rem;
        }

        .faq-answer p {
            font-size: 0.92rem;
            color: var(--text-cool-silver);
            line-height: 1.65;
            margin-bottom: 0;
        }

        /* ========== CTA Section ========== */
        .cta-section {
            background: linear-gradient(145deg, var(--bg-cyber-navy) 0%, var(--bg-deep-space) 60%, var(--bg-cyber-navy-2) 100%);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 3.5rem 2.5rem;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 82, 255, 0.15) 0%, transparent 60%);
            pointer-events: none;
        }

        .cta-section .container-cta {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 900;
            color: var(--text-white);
            margin-bottom: 0.8rem;
            letter-spacing: -0.5px;
        }

        .cta-section p {
            font-size: 1rem;
            color: var(--text-cool-silver);
            max-width: 600px;
            margin: 0 auto 1.8rem;
            line-height: 1.6;
        }

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

        /* ========== Footer ========== */
        .site-footer {
            background: var(--bg-deep-space);
            border-top: 1px solid var(--border-glass);
            padding-top: 3.5rem;
            margin-top: 3rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-cool-silver);
            line-height: 1.6;
            max-width: 360px;
            margin-top: 0.5rem;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 1rem;
            letter-spacing: 0.3px;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 0.55rem;
        }

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

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

        .footer-bottom {
            border-top: 1px solid var(--border-glass);
            padding: 1.4rem 0 2rem;
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
            align-items: flex-start;
        }

        .footer-bottom p {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.5;
        }

        .footer-bottom .disclaimer {
            font-size: 0.78rem;
            color: var(--text-muted);
            opacity: 0.7;
            max-width: 720px;
        }

        /* ========== Highlight Box ========== */
        .highlight-box {
            background: rgba(0, 240, 255, 0.05);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-md);
            padding: 1.5rem 1.8rem;
            margin-top: 1.5rem;
            text-align: left;
        }

        .highlight-box h4 {
            font-size: 1rem;
            font-weight: 800;
            color: var(--accent-neon-cyan);
            margin-bottom: 0.5rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .highlight-box p {
            font-size: 0.92rem;
            color: var(--text-cool-silver);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ========== Divider ========== */
        .divider-glow {
            border: none;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border-electric), var(--border-cyan), transparent);
            margin: 0;
            opacity: 0.6;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 2.2rem;
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            .footer-brand {
                grid-column: span 2;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 3.5rem;
                --spacing-section-lg: 4.5rem;
            }

            .header-inner {
                flex-wrap: wrap;
            }

            .logo {
                font-size: 0.95rem;
                white-space: normal;
                line-height: 1.3;
            }

            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.85rem;
            }

            .nav-toggle {
                display: block;
            }

            .nav-menu {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                background: rgba(8, 9, 15, 0.98);
                backdrop-filter: blur(20px);
                border-bottom: 1px solid var(--border-glass);
                padding: 12px 20px 18px;
                display: none;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
            }

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

            .nav-link {
                padding: 12px 16px;
                font-size: 0.95rem;
                border-radius: 10px;
                white-space: normal;
            }

            .hero-category {
                padding: 2.5rem 0 3.5rem;
            }

            .flash-sale-bar {
                flex-direction: column;
                align-items: flex-start;
                padding: 14px 18px;
                margin-bottom: 1.8rem;
            }

            .flash-sale-timer {
                font-size: 0.95rem;
                flex-wrap: wrap;
            }

            .timer-box {
                min-width: 36px;
                height: 34px;
                font-size: 0.95rem;
            }

            .hero-content-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .hero-title {
                font-size: 1.8rem;
                letter-spacing: -0.5px;
            }

            .hero-desc {
                font-size: 0.95rem;
            }

            .hero-product-card {
                max-width: 100%;
            }

            .hero-product-img {
                height: 180px;
            }

            .section-title {
                font-size: 1.55rem;
            }

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

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

            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 0.9rem;
            }

            .stat-number {
                font-size: 1.8rem;
            }

            .stat-block {
                padding: 1.2rem 1rem;
            }

            .cta-section {
                padding: 2.5rem 1.5rem;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.8rem;
            }

            .footer-brand {
                grid-column: span 1;
            }

            .fab-cyber {
                left: 0.75rem;
                bottom: 5rem;
                width: 48px;
                height: 48px;
                font-size: 1.15rem;
            }

            .btn {
                padding: 12px 22px;
                font-size: 0.88rem;
            }
        }

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

            .flash-sale-timer {
                gap: 4px;
                font-size: 0.85rem;
            }

            .timer-box {
                min-width: 30px;
                height: 30px;
                font-size: 0.85rem;
                border-radius: 6px;
            }

            .timer-sep {
                font-size: 0.8rem;
            }

            .hero-title {
                font-size: 1.5rem;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

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

            .stats-row {
                grid-template-columns: 1fr;
            }

            .process-timeline {
                padding-left: 1.5rem;
            }

            .process-step {
                padding-left: 0.75rem;
            }

            .process-step::before {
                left: -1.5rem;
                width: 10px;
                height: 10px;
                border-width: 2px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-deep: #08090F;
            --bg-navy: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.65);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-purple: #6C3CE1;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #8892A4;
            --border-glass: rgba(255, 255, 255, 0.08);
            --border-cyan: rgba(0, 240, 255, 0.35);
            --border-blue: rgba(0, 82, 255, 0.4);
            --glow-cyan-sm: 0 0 10px rgba(0, 240, 255, 0.3);
            --glow-cyan-md: 0 0 20px rgba(0, 240, 255, 0.45);
            --glow-cyan-lg: 0 0 35px rgba(0, 240, 255, 0.55);
            --glow-blue-sm: 0 0 10px rgba(0, 82, 255, 0.3);
            --glow-blue-md: 0 0 20px rgba(0, 82, 255, 0.4);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
            --font-body: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
        }

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

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

        body {
            font-family: var(--font-body);
            background: var(--bg-deep);
            color: var(--text-silver);
            line-height: 1.6;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            background-image:
                radial-gradient(ellipse at 15% 20%, rgba(0, 82, 255, 0.06) 0%, transparent 60%),
                radial-gradient(ellipse at 75% 50%, rgba(0, 240, 255, 0.05) 0%, transparent 55%),
                radial-gradient(ellipse at 40% 80%, rgba(108, 60, 225, 0.04) 0%, transparent 50%);
            background-attachment: fixed;
        }

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

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

        button {
            cursor: pointer;
            font-family: var(--font-body);
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            color: var(--text-white);
            line-height: 1.3;
            margin-top: 0;
        }

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

        .section-padding {
            padding-top: 80px;
            padding-bottom: 80px;
        }

        /* Header / Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.78);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-glass);
            transition: var(--transition-smooth);
            padding: 0;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 62px;
            gap: 20px;
        }

        .logo a {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-white);
            white-space: nowrap;
            transition: var(--transition-fast);
        }
        .logo a:hover {
            color: var(--accent-cyan);
            text-shadow: var(--glow-cyan-sm);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 10px;
            font-size: 1.1rem;
            color: #fff;
            box-shadow: var(--glow-cyan-sm);
            flex-shrink: 0;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-link {
            display: inline-block;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-silver);
            transition: var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-link:hover {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.06);
        }
        .nav-link.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.1);
            font-weight: 600;
            box-shadow: inset 0 0 0 1px rgba(0, 240, 255, 0.2);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border-glass);
            border-radius: 8px;
            color: var(--text-white);
            font-size: 1.4rem;
            padding: 8px 12px;
            transition: var(--transition-fast);
            line-height: 1;
        }
        .nav-toggle:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
        }

        /* Hero Section */
        .hero-section {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            overflow: hidden;
            padding-top: 80px;
            padding-bottom: 60px;
            background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            background-attachment: fixed;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 9, 15, 0.7) 0%, rgba(8, 9, 15, 0.88) 40%, rgba(8, 9, 15, 0.95) 100%);
            z-index: 1;
        }
        .hero-section .container {
            position: relative;
            z-index: 2;
        }
        .hero-content {
            max-width: 720px;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--accent-cyan);
            font-size: 0.82rem;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 20px;
            letter-spacing: 0.5px;
            margin-bottom: 18px;
            box-shadow: var(--glow-cyan-sm);
        }
        .hero-content h1 {
            font-size: 2.6rem;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--text-white);
            letter-spacing: -0.5px;
        }
        .hero-content h1 span {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-lead {
            font-size: 1.1rem;
            color: var(--text-silver);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 580px;
        }
        .btn-glow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 30px;
            border: 1px solid var(--border-cyan);
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.12), rgba(0, 82, 255, 0.1));
            color: var(--accent-cyan);
            transition: var(--transition-smooth);
            box-shadow: var(--glow-cyan-sm);
            cursor: pointer;
            white-space: nowrap;
            position: relative;
            overflow: hidden;
        }
        .btn-glow:hover {
            box-shadow: var(--glow-cyan-lg);
            border-color: rgba(0, 240, 255, 0.7);
            color: #fff;
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.22), rgba(0, 82, 255, 0.18));
            transform: translateY(-2px);
        }
        .btn-glow:active {
            transform: translateY(1px);
            box-shadow: var(--glow-cyan-sm);
        }
        .btn-solid {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 30px;
            border: none;
            background: linear-gradient(135deg, var(--accent-blue), #0040CC);
            color: #fff;
            transition: var(--transition-smooth);
            box-shadow: var(--glow-blue-md);
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-solid:hover {
            box-shadow: 0 0 30px rgba(0, 82, 255, 0.6), 0 0 50px rgba(0, 82, 255, 0.25);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-solid:active {
            transform: translateY(1px);
        }
        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        /* Glass Card */
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            transition: var(--transition-smooth);
            position: relative;
        }
        .glass-card:hover {
            border-color: rgba(255, 255, 255, 0.18);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35), var(--glow-cyan-sm);
            transform: translateY(-4px);
        }
        .glass-card-cyan {
            border-color: rgba(0, 240, 255, 0.15);
        }
        .glass-card-cyan:hover {
            border-color: var(--border-cyan);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35), var(--glow-cyan-md);
        }

        /* Section Titles */
        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 1.2px;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 10px;
            border-left: 3px solid var(--accent-cyan);
            padding-left: 12px;
        }
        .section-title {
            font-size: 1.9rem;
            font-weight: 750;
            margin-bottom: 14px;
            color: var(--text-white);
        }
        .section-desc {
            font-size: 1.02rem;
            color: var(--text-muted);
            line-height: 1.65;
            max-width: 680px;
            margin-bottom: 32px;
        }

        /* Strategy Card Grid */
        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .strategy-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            border: 1px solid var(--border-glass);
            transition: var(--transition-smooth);
        }
        .glass-card:hover .strategy-card-img {
            border-color: rgba(255, 255, 255, 0.2);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
        }
        .strategy-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .strategy-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.55;
            margin-bottom: 0;
        }
        .strategy-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 12px;
            margin-bottom: 10px;
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 240, 255, 0.2);
        }

        /* Data highlight */
        .data-highlight {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            align-items: stretch;
        }
        .data-stat {
            flex: 1 1 160px;
            background: var(--bg-card);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            text-align: center;
            transition: var(--transition-smooth);
        }
        .data-stat:hover {
            border-color: var(--border-cyan);
            box-shadow: var(--glow-cyan-sm);
        }
        .data-stat .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1;
            margin-bottom: 6px;
        }
        .data-stat .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* Scenario list */
        .scenario-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 16px;
        }
        .scenario-list li {
            background: var(--bg-card);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            display: flex;
            align-items: flex-start;
            gap: 14px;
            transition: var(--transition-smooth);
            font-size: 0.93rem;
            color: var(--text-silver);
            line-height: 1.5;
        }
        .scenario-list li:hover {
            border-color: rgba(255, 255, 255, 0.16);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .scenario-icon {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(0, 240, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.1rem;
            border: 1px solid rgba(0, 240, 255, 0.2);
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition-smooth);
        }
        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.14);
        }
        .faq-question {
            padding: 18px 22px;
            font-weight: 650;
            font-size: 1rem;
            color: var(--text-white);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            user-select: none;
            transition: var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--accent-cyan);
        }
        .faq-question i {
            font-size: 0.85rem;
            color: var(--accent-cyan);
            transition: var(--transition-fast);
        }
        .faq-answer {
            padding: 0 22px 20px;
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.6;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open {
            border-color: rgba(0, 240, 255, 0.25);
            box-shadow: var(--glow-cyan-sm);
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(180deg, rgba(0, 82, 255, 0.07) 0%, rgba(0, 240, 255, 0.04) 100%);
            border-top: 1px solid var(--border-glass);
            border-bottom: 1px solid var(--border-glass);
        }
        .cta-inner {
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            font-size: 1.8rem;
            font-weight: 750;
            margin-bottom: 12px;
        }
        .cta-inner p {
            color: var(--text-muted);
            margin-bottom: 24px;
            line-height: 1.6;
        }

        /* Footer */
        .site-footer {
            background: rgba(6, 7, 12, 0.9);
            border-top: 1px solid var(--border-glass);
            padding: 50px 0 28px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.55;
            margin-top: 8px;
            margin-bottom: 0;
        }
        .footer-col h4 {
            color: var(--text-white);
            font-size: 1rem;
            font-weight: 650;
            margin-bottom: 14px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.88rem;
            transition: var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-glass);
            padding-top: 20px;
            text-align: center;
        }
        .footer-bottom p {
            color: var(--text-muted);
            font-size: 0.8rem;
            margin-bottom: 4px;
        }
        .disclaimer {
            font-size: 0.75rem;
            color: #6b7280;
            max-width: 700px;
            margin: 6px auto 0;
            line-height: 1.45;
        }

        /* FAB - Cyber Neon Style */
        .fab-neon {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 1050;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.7);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition-smooth);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.4), 0 0 35px rgba(0, 240, 255, 0.15);
            color: var(--accent-cyan);
            font-size: 1.3rem;
            animation: fab-pulse 3s ease-in-out infinite;
        }
        .fab-neon::before {
            content: '';
            position: absolute;
            inset: -3px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            z-index: -1;
            opacity: 0.7;
        }
        .fab-neon:hover {
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.65), 0 0 55px rgba(0, 240, 255, 0.25);
            transform: scale(1.12);
            color: #fff;
        }
        .fab-neon:active {
            transform: scale(0.95);
        }
        @keyframes fab-pulse {
            0%,
            100% {
                box-shadow: 0 0 18px rgba(0, 240, 255, 0.4), 0 0 35px rgba(0, 240, 255, 0.15);
            }
            50% {
                box-shadow: 0 0 26px rgba(0, 240, 255, 0.6), 0 0 48px rgba(0, 240, 255, 0.25);
            }
        }
        .fab-tooltip {
            position: absolute;
            left: 62px;
            white-space: nowrap;
            background: rgba(0, 0, 0, 0.85);
            backdrop-filter: blur(6px);
            border: 1px solid var(--border-cyan);
            border-radius: 6px;
            padding: 6px 14px;
            font-size: 0.78rem;
            color: var(--accent-cyan);
            pointer-events: none;
            opacity: 0;
            transition: opacity 0.25s;
        }
        .fab-neon:hover .fab-tooltip {
            opacity: 1;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-content h1 {
                font-size: 2.1rem;
            }
            .section-title {
                font-size: 1.55rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 768px) {
            .nav-menu {
                position: fixed;
                top: 62px;
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.94);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: stretch;
                padding: 12px 16px;
                gap: 4px;
                border-bottom: 1px solid var(--border-glass);
                display: none;
                z-index: 999;
            }
            .nav-menu.show {
                display: flex;
            }
            .nav-toggle {
                display: block;
            }
            .nav-link {
                padding: 10px 14px;
                border-radius: 8px;
                font-size: 0.95rem;
                width: 100%;
            }
            .hero-section {
                min-height: 400px;
                background-attachment: scroll;
            }
            .hero-content h1 {
                font-size: 1.7rem;
            }
            .hero-lead {
                font-size: 0.95rem;
            }
            .section-padding {
                padding-top: 50px;
                padding-bottom: 50px;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .strategy-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .scenario-list {
                grid-template-columns: 1fr;
            }
            .data-highlight {
                gap: 14px;
            }
            .data-stat {
                flex: 1 1 120px;
                padding: 16px 12px;
            }
            .data-stat .stat-number {
                font-size: 1.8rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .fab-neon {
                width: 44px;
                height: 44px;
                left: 10px;
                bottom: 80px;
                font-size: 1.1rem;
            }
            .cta-inner h2 {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 1.4rem;
            }
            .hero-buttons {
                flex-direction: column;
                gap: 10px;
            }
            .btn-glow,
            .btn-solid {
                width: 100%;
                justify-content: center;
                padding: 12px 20px;
                font-size: 0.9rem;
            }
            .section-title {
                font-size: 1.2rem;
            }
            .glass-card {
                padding: 18px 14px;
            }
            .strategy-card-img {
                height: 160px;
            }
            .data-highlight {
                flex-direction: column;
            }
            .header-inner {
                height: 54px;
            }
            .logo a {
                font-size: 0.88rem;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
                border-radius: 8px;
            }
        }

/* roulang page: category3 */
:root {
            --primary-deep: #0A2E1C;
            --primary-mid: #123E25;
            --primary-soft: #1A4D32;
            --gold: #FFD700;
            --gold-soft: #FFE55C;
            --gold-muted: #C5A059;
            --red-accent: #D32F2F;
            --text-white: #FFFFFF;
            --text-mint: #D1F2EB;
            --text-muted: #9BB8AD;
            --border-gold: rgba(255, 215, 0, 0.35);
            --border-soft: rgba(255, 215, 0, 0.18);
            --glass-bg: rgba(10, 46, 28, 0.75);
            --glass-bg-strong: rgba(10, 46, 28, 0.92);
            --glass-border: rgba(255, 215, 0, 0.22);
            --glow-gold: 0 0 18px rgba(255, 215, 0, 0.28);
            --glow-gold-strong: 0 0 26px rgba(255, 215, 0, 0.45);
            --glow-green: 0 0 16px rgba(26, 77, 50, 0.5);
            --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.45);
            --shadow-soft: 0 4px 14px rgba(0, 0, 0, 0.3);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 32px;
            --font-sans: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.75rem;
            --spacing-lg: 2.75rem;
            --spacing-xl: 4rem;
            --spacing-2xl: 6rem;
            --transition-fast: 0.2s ease;
            --transition-med: 0.35s ease;
            --transition-slow: 0.5s ease;
        }

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

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

        body {
            font-family: var(--font-sans);
            background-color: var(--primary-deep);
            color: var(--text-white);
            line-height: 1.6;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
            background-image:
                radial-gradient(ellipse at top left, rgba(26, 77, 50, 0.35) 0%, transparent 55%),
                radial-gradient(ellipse at bottom right, rgba(211, 47, 47, 0.08) 0%, transparent 50%),
                linear-gradient(180deg, #0A2E1C 0%, #0B2417 40%, #08190F 100%);
        }

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

        a {
            color: var(--gold);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--gold-soft);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--gold);
            outline-offset: 3px;
            border-radius: 4px;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible {
            outline: 2px solid var(--gold);
            outline-offset: 3px;
        }

        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 0.75rem;
            color: var(--text-white);
        }

        p {
            margin-bottom: 1rem;
            color: var(--text-mint);
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* HEADER & NAV */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(8, 25, 16, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-soft);
            transition: background var(--transition-med), box-shadow var(--transition-med);
        }
        .site-header.scrolled {
            background: rgba(8, 22, 14, 0.96);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 70px;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.1rem;
            color: #fff;
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .logo:hover {
            color: var(--gold-soft);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(145deg, var(--gold), var(--gold-muted));
            border-radius: 10px;
            font-size: 1rem;
            color: #0A2E1C;
            box-shadow: var(--glow-gold);
            flex-shrink: 0;
        }
        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            font-size: 1.3rem;
            color: var(--gold);
            border: 1px solid var(--border-gold);
            border-radius: 10px;
            background: rgba(255, 215, 0, 0.08);
            transition: all var(--transition-fast);
            align-items: center;
            justify-content: center;
        }
        .nav-toggle:hover {
            background: rgba(255, 215, 0, 0.18);
            box-shadow: var(--glow-gold);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 0.35rem;
            flex-wrap: wrap;
        }
        .nav-link {
            display: inline-block;
            padding: 0.55rem 1.05rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-mint);
            border-radius: 50px;
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(255, 215, 0, 0.1);
        }
        .nav-link.active {
            color: #0A2E1C;
            background: linear-gradient(145deg, var(--gold), var(--gold-muted));
            font-weight: 700;
            box-shadow: var(--glow-gold);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-left: auto;
        }
        .btn-outline-gold {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.55rem 1.25rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--gold);
            border: 1px solid var(--border-gold);
            background: transparent;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .btn-outline-gold:hover {
            background: rgba(255, 215, 0, 0.12);
            border-color: var(--gold);
            color: var(--gold-soft);
        }
        .btn-solid-gold {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.55rem 1.25rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
            color: #0A2E1C;
            background: linear-gradient(145deg, var(--gold), var(--gold-muted));
            border: 1px solid var(--gold);
            box-shadow: var(--glow-gold);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .btn-solid-gold:hover {
            box-shadow: var(--glow-gold-strong);
            transform: translateY(-2px);
            color: #0A2E1C;
            background: linear-gradient(145deg, var(--gold-soft), var(--gold));
        }

        /* HERO */
        .hero-section {
            padding-top: 150px;
            padding-bottom: 4.5rem;
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            background:
                radial-gradient(ellipse at top right, rgba(255, 215, 0, 0.08) 0%, transparent 55%),
                radial-gradient(ellipse at bottom left, rgba(26, 77, 50, 0.4) 0%, transparent 50%),
                linear-gradient(160deg, rgba(10, 46, 28, 0.9) 0%, rgba(8, 20, 12, 0.95) 100%);
        }
        .hero-inner {
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: 3rem;
            align-items: center;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.4rem 1rem;
            background: rgba(255, 215, 0, 0.12);
            border: 1px solid var(--border-gold);
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--gold);
            letter-spacing: 0.02em;
            margin-bottom: 1.25rem;
        }
        .hero-badge i {
            font-size: 0.85rem;
        }
        .hero-title {
            font-size: clamp(2rem, 4.2vw, 3.2rem);
            font-weight: 900;
            line-height: 1.15;
            margin-bottom: 1.25rem;
            color: #fff;
            letter-spacing: -0.02em;
        }
        .hero-title .highlight {
            color: var(--gold);
            position: relative;
            white-space: nowrap;
        }
        .hero-title .highlight::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 4px;
            width: 100%;
            height: 6px;
            background: rgba(255, 215, 0, 0.28);
            border-radius: 3px;
            z-index: -1;
        }
        .hero-subtitle {
            font-size: 1.1rem;
            line-height: 1.7;
            color: var(--text-mint);
            margin-bottom: 1.5rem;
            max-width: 540px;
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            margin-bottom: 1.75rem;
        }
        .hero-stat {
            display: flex;
            align-items: center;
            gap: 0.7rem;
        }
        .hero-stat-num {
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--gold);
            letter-spacing: -0.02em;
        }
        .hero-stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            line-height: 1.3;
        }
        .progress-wrap {
            margin-bottom: 1.75rem;
            max-width: 500px;
        }
        .progress-label {
            display: flex;
            justify-content: space-between;
            font-size: 0.82rem;
            color: var(--text-mint);
            margin-bottom: 0.5rem;
            font-weight: 500;
        }
        .progress-bar-custom {
            height: 10px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50px;
            overflow: hidden;
            border: 1px solid var(--border-soft);
        }
        .progress-bar-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--gold-muted), var(--gold), var(--gold-soft));
            border-radius: 50px;
            width: 72%;
            box-shadow: var(--glow-gold);
            animation: progressPulse 2.5s ease-in-out infinite;
        }
        @keyframes progressPulse {
            0%, 100% { opacity: 0.85; }
            50% { opacity: 1; }
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
        }
        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.7rem;
            padding: 0.9rem 2rem;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 700;
            color: #0A2E1C;
            background: linear-gradient(145deg, var(--gold), var(--gold-muted));
            border: 1px solid var(--gold);
            box-shadow: var(--glow-gold-strong);
            transition: all var(--transition-med);
            white-space: nowrap;
        }
        .btn-hero-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 0 35px rgba(255, 215, 0, 0.6);
            color: #0A2E1C;
            background: linear-gradient(145deg, var(--gold-soft), var(--gold));
        }
        .btn-hero-secondary {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.9rem 1.75rem;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-mint);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-soft);
            transition: all var(--transition-med);
            white-space: nowrap;
        }
        .btn-hero-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border-color: var(--border-gold);
            transform: translateY(-2px);
        }
        .hero-visual {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 400px;
        }
        .hero-visual-img {
            width: 100%;
            max-width: 460px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card), var(--glow-gold);
            border: 2px solid var(--border-gold);
            position: relative;
            z-index: 2;
        }
        .hero-visual-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4/3;
        }
        .hero-glow-1 {
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 215, 0, 0.12);
            filter: blur(60px);
            top: -40px;
            right: -40px;
            z-index: 1;
            animation: floatGlow 6s ease-in-out infinite;
        }
        .hero-glow-2 {
            position: absolute;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(26, 77, 50, 0.5);
            filter: blur(50px);
            bottom: -30px;
            left: -30px;
            z-index: 1;
            animation: floatGlow 8s ease-in-out infinite reverse;
        }
        @keyframes floatGlow {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-18px); }
        }
        .hero-floating-chip {
            position: absolute;
            bottom: 20px;
            left: -20px;
            z-index: 3;
            background: var(--glass-bg-strong);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-md);
            padding: 0.9rem 1.2rem;
            display: flex;
            align-items: center;
            gap: 0.8rem;
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }
        .hero-floating-chip i {
            font-size: 1.4rem;
            color: var(--gold);
        }
        .hero-floating-chip .chip-text {
            font-size: 0.8rem;
            color: var(--text-mint);
            font-weight: 600;
            line-height: 1.3;
        }
        .hero-floating-chip .chip-text strong {
            color: #fff;
            display: block;
            font-size: 0.95rem;
        }

        /* SECTION COMMON */
        .section {
            padding: 4.5rem 0;
            position: relative;
        }
        .section-alt {
            background: rgba(8, 24, 14, 0.5);
            border-top: 1px solid var(--border-soft);
            border-bottom: 1px solid var(--border-soft);
        }
        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.3rem);
            font-weight: 800;
            margin-bottom: 0.75rem;
            color: #fff;
            letter-spacing: -0.015em;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 640px;
            line-height: 1.7;
            margin-bottom: 2.5rem;
        }
        .section-divider {
            width: 70px;
            height: 4px;
            background: linear-gradient(90deg, var(--gold), var(--gold-muted));
            border-radius: 2px;
            margin-bottom: 1.5rem;
        }

        /* GLASS CARD */
        .glass-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 2rem 1.75rem;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-med);
            height: 100%;
        }
        .glass-card:hover {
            border-color: var(--border-gold);
            box-shadow: var(--shadow-card), var(--glow-gold);
            transform: translateY(-5px);
        }
        .glass-card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--gold);
            background: rgba(255, 215, 0, 0.12);
            border: 1px solid var(--border-gold);
            margin-bottom: 1.1rem;
            transition: all var(--transition-fast);
        }
        .glass-card:hover .card-icon {
            background: rgba(255, 215, 0, 0.2);
            box-shadow: var(--glow-gold);
        }
        .glass-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.6rem;
            color: #fff;
        }
        .glass-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.68;
        }

        /* LIST STYLES */
        .custom-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .custom-list li {
            display: flex;
            align-items: flex-start;
            gap: 0.9rem;
            padding: 0.85rem 0;
            color: var(--text-mint);
            font-size: 0.95rem;
            line-height: 1.65;
            border-bottom: 1px solid rgba(255, 215, 0, 0.08);
        }
        .custom-list li:last-child {
            border-bottom: none;
        }
        .custom-list li i {
            color: var(--gold);
            font-size: 0.9rem;
            margin-top: 0.25rem;
            flex-shrink: 0;
        }

        /* STEP COLUMN */
        .step-item {
            display: flex;
            gap: 1.2rem;
            padding: 1.4rem 1.2rem;
            border-radius: var(--radius-md);
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            margin-bottom: 1rem;
            transition: all var(--transition-med);
        }
        .step-item:hover {
            border-color: var(--border-gold);
            box-shadow: var(--glow-gold);
        }
        .step-number {
            flex-shrink: 0;
            width: 46px;
            height: 46px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.15rem;
            color: #0A2E1C;
            background: linear-gradient(145deg, var(--gold), var(--gold-muted));
            box-shadow: var(--glow-gold);
        }
        .step-content h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
            color: #fff;
        }
        .step-content p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.65;
        }

        /* DATA BADGE */
        .data-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.3rem 0.85rem;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            background: rgba(255, 215, 0, 0.1);
            border: 1px solid var(--border-soft);
            color: var(--gold);
        }

        /* TABLE WRAP */
        .table-wrap {
            background: var(--glass-bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--glass-border);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            margin-bottom: 1rem;
        }
        .table-custom {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.9rem;
        }
        .table-custom thead th {
            background: rgba(255, 215, 0, 0.1);
            color: var(--gold);
            font-weight: 700;
            padding: 1rem 1.2rem;
            text-align: left;
            border-bottom: 1px solid var(--border-gold);
            font-size: 0.83rem;
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }
        .table-custom tbody td {
            padding: 0.9rem 1.2rem;
            color: var(--text-mint);
            border-bottom: 1px solid rgba(255, 215, 0, 0.07);
            font-size: 0.88rem;
        }
        .table-custom tbody tr:last-child td {
            border-bottom: none;
        }
        .table-custom tbody tr:hover {
            background: rgba(255, 215, 0, 0.05);
        }

        /* FAQ */
        .faq-section {
            padding: 4rem 0;
        }
        .accordion-custom .accordion-item {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md) !important;
            margin-bottom: 0.8rem;
            overflow: hidden;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: all var(--transition-med);
        }
        .accordion-custom .accordion-item:hover {
            border-color: var(--border-gold);
        }
        .accordion-custom .accordion-button {
            background: transparent;
            color: #fff;
            font-weight: 700;
            font-size: 0.95rem;
            padding: 1.15rem 1.4rem;
            border: none;
            box-shadow: none;
            transition: all var(--transition-fast);
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--gold);
            background: rgba(255, 215, 0, 0.06);
            box-shadow: none;
        }
        .accordion-custom .accordion-button::after {
            filter: brightness(0) invert(1) sepia(1) saturate(5) hue-rotate(5deg);
            transition: transform var(--transition-fast);
        }
        .accordion-custom .accordion-button:focus-visible {
            outline: 2px solid var(--gold);
            outline-offset: -2px;
            border-radius: var(--radius-md);
        }
        .accordion-custom .accordion-body {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            padding: 1.1rem 1.4rem 1.4rem;
            background: rgba(0, 0, 0, 0.15);
        }

        /* CTA */
        .cta-section {
            padding: 4.5rem 0;
        }
        .cta-box {
            background: linear-gradient(145deg, rgba(26, 77, 50, 0.85), rgba(8, 20, 12, 0.95));
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-xl);
            padding: 3rem 2.5rem;
            text-align: center;
            box-shadow: var(--shadow-card), var(--glow-gold);
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(255, 215, 0, 0.08) 0%, transparent 65%);
            pointer-events: none;
        }
        .cta-box h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.9rem;
            position: relative;
            z-index: 2;
        }
        .cta-box p {
            color: var(--text-mint);
            font-size: 1rem;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
            margin-bottom: 1.75rem;
            position: relative;
            z-index: 2;
            line-height: 1.7;
        }
        .cta-box .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.7rem;
            padding: 1rem 2.4rem;
            border-radius: 50px;
            font-size: 1.05rem;
            font-weight: 700;
            color: #0A2E1C;
            background: linear-gradient(145deg, var(--gold), var(--gold-muted));
            border: 1px solid var(--gold);
            box-shadow: var(--glow-gold-strong);
            transition: all var(--transition-med);
            position: relative;
            z-index: 2;
        }
        .cta-box .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 0 40px rgba(255, 215, 0, 0.65);
            color: #0A2E1C;
            background: linear-gradient(145deg, var(--gold-soft), var(--gold));
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 1050;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(145deg, #1C2A20, #0A1A10);
            border: 2px solid var(--gold);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--gold);
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3), var(--shadow-card);
            cursor: pointer;
            opacity: 0.7;
            animation: fabFloat 3s ease-in-out infinite;
            transition: all var(--transition-med);
            text-decoration: none;
        }
        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(255, 215, 0, 0.5);
            color: var(--gold-soft);
        }
        .fab-left:active {
            transform: scale(0.95) translateY(2px);
        }
        .fab-notification {
            position: absolute;
            top: -3px;
            right: -3px;
            width: 14px;
            height: 14px;
            background: #D32F2F;
            border-radius: 50%;
            border: 2px solid #0A2E1C;
            animation: fabBlink 1.8s ease-in-out infinite;
        }
        @keyframes fabFloat {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
        }
        @keyframes fabBlink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        /* FOOTER */
        .site-footer {
            background: rgba(5, 16, 9, 0.95);
            border-top: 1px solid var(--border-soft);
            padding: 3.5rem 0 1.5rem;
            margin-top: 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--gold);
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 0.6rem;
        }
        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.88rem;
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .footer-col ul li a:hover {
            color: var(--gold);
            transform: translateX(4px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 215, 0, 0.1);
            padding-top: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
        }
        .footer-bottom p {
            color: var(--text-muted);
            font-size: 0.8rem;
            margin-bottom: 0;
        }
        .footer-bottom .disclaimer {
            font-size: 0.78rem;
            max-width: 500px;
            text-align: right;
            line-height: 1.6;
        }

        /* RESPONSIVE */
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 2.5rem;
            }
            .hero-visual {
                min-height: auto;
                order: -1;
            }
            .hero-visual-img {
                max-width: 360px;
                margin: 0 auto;
            }
            .hero-floating-chip {
                left: 10px;
                bottom: 10px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                min-height: 60px;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: rgba(8, 22, 14, 0.98);
                border-bottom: 1px solid var(--border-soft);
                padding: 1rem 1.25rem 1.25rem;
                flex-direction: column;
                align-items: stretch;
                gap: 0.4rem;
                box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-link {
                padding: 0.7rem 1.1rem;
                font-size: 0.95rem;
                text-align: left;
            }
            .nav-cta {
                margin-left: 0;
                width: 100%;
                justify-content: flex-start;
                gap: 0.6rem;
                flex-wrap: wrap;
            }
            .nav-cta .btn-outline-gold,
            .nav-cta .btn-solid-gold {
                flex: 1;
                justify-content: center;
            }
            .hero-section {
                padding-top: 110px;
                padding-bottom: 3rem;
                min-height: auto;
            }
            .hero-title {
                font-size: clamp(1.7rem, 5vw, 2.2rem);
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 1rem;
            }
            .hero-stat-num {
                font-size: 1.4rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .btn-hero-primary,
            .btn-hero-secondary {
                justify-content: center;
                width: 100%;
            }
            .section {
                padding: 3rem 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .glass-card {
                padding: 1.5rem 1.25rem;
            }
            .cta-box {
                padding: 2rem 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom .disclaimer {
                text-align: center;
            }
            .fab-left {
                width: 48px;
                height: 48px;
                left: 0.8rem;
                bottom: 5rem;
                font-size: 1.1rem;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .logo {
                font-size: 0.9rem;
                gap: 8px;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.85rem;
                border-radius: 8px;
            }
            .hero-title {
                font-size: 1.55rem;
            }
            .hero-stats {
                flex-direction: column;
                gap: 0.6rem;
            }
            .hero-floating-chip {
                padding: 0.6rem 0.9rem;
                font-size: 0.72rem;
            }
            .table-custom thead th,
            .table-custom tbody td {
                padding: 0.7rem 0.8rem;
                font-size: 0.78rem;
            }
            .step-item {
                flex-direction: column;
                gap: 0.8rem;
            }
            .step-number {
                width: 38px;
                height: 38px;
                font-size: 1rem;
            }
            .cta-box h2 {
                font-size: 1.4rem;
            }
            .cta-box .btn-cta {
                padding: 0.85rem 1.8rem;
                font-size: 0.95rem;
                width: 100%;
                justify-content: center;
            }
        }