/* roulang page: index */
:root {
            --bg-primary: #0A2E1C;
            --bg-secondary: #123E25;
            --bg-card: #0F3522;
            --bg-dark: #062315;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --accent-green: #2ECC71;
            --text-primary: #FFFFFF;
            --text-secondary: #D1F2EB;
            --text-muted: #8FBFB0;
            --border-gold: #B8941F;
            --border-subtle: rgba(255,215,0,0.2);
            --shadow-gold: 0 4px 20px rgba(255,215,0,0.3);
            --shadow-card: 0 8px 32px rgba(0,0,0,0.4);
            --shadow-hover: 0 12px 40px rgba(255,215,0,0.25);
            --radius-sm: 8px;
            --radius-md: 12px;
            --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: 'Playfair Display', serif;
            --font-body: 'Inter', system-ui, -apple-system, sans-serif;
            --container-max: 1280px;
            --nav-height: 72px;
        }

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

        html { scroll-behavior: smooth; }

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

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

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

        /* ========== HEADER / NAVIGATION ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(10,46,28,0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            height: var(--nav-height);
            transition: background var(--transition-smooth);
        }

        .site-header.scrolled {
            background: rgba(6,35,21,0.96);
            box-shadow: 0 2px 24px rgba(0,0,0,0.5);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            font-family: var(--font-heading);
            font-weight: 900;
            font-size: 1.25rem;
            line-height: 1.2;
            color: var(--accent-gold);
            letter-spacing: 0.01em;
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo i {
            font-size: 1.5rem;
            color: var(--accent-gold);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-links a {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }

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

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-gold);
        }

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

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

        .btn-login {
            background: transparent;
            border: 1px solid var(--border-subtle);
            color: var(--text-primary);
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

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

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-gold) 0%, #F0A500 100%);
            color: var(--bg-dark);
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.9rem;
            white-space: nowrap;
            transition: all var(--transition-fast);
            box-shadow: 0 2px 12px rgba(255,215,0,0.25);
        }

        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(255,215,0,0.45);
            background: linear-gradient(135deg, #FFE44D 0%, #F5B800 100%);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 8px;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            width: 100%;
            background: rgba(10,46,28,0.98);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            padding: 24px;
            flex-direction: column;
            gap: 16px;
            z-index: 999;
        }

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

        .mobile-menu a {
            font-weight: 500;
            font-size: 1.05rem;
            color: var(--text-secondary);
            padding: 10px 0;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }

        .mobile-menu .btn-login,
        .mobile-menu .btn-signup {
            display: inline-block;
            text-align: center;
            margin-top: 6px;
        }

        /* ========== HERO – Video Full Width ========== */
        .hero {
            position: relative;
            margin-top: var(--nav-height);
            min-height: 85vh;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            background: var(--bg-dark);
        }

        .hero-video-bg {
            position: absolute;
            top: 0; left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.55;
            pointer-events: none;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(6,35,21,0.7) 0%, rgba(10,46,28,0.85) 50%, rgba(6,35,21,0.95) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            padding: 0 24px;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(211,47,47,0.9);
            color: #fff;
            padding: 6px 18px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.04em;
            margin-bottom: 24px;
            text-transform: uppercase;
        }

        .hero h1 {
            font-family: var(--font-heading);
            font-size: clamp(2.4rem, 5vw, 3.6rem);
            font-weight: 900;
            line-height: 1.15;
            color: var(--accent-gold);
            margin-bottom: 20px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.5);
        }

        .hero p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 620px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-gold) 0%, #F0A500 100%);
            color: var(--bg-dark);
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: all var(--transition-smooth);
            box-shadow: 0 4px 18px rgba(255,215,0,0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(255,215,0,0.5);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid var(--accent-gold);
            color: var(--accent-gold);
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: all var(--transition-smooth);
        }

        .btn-outline:hover {
            background: rgba(255,215,0,0.1);
            border-color: #FFE44D;
        }

        .hero-play-btn {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: var(--accent-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 28px;
            cursor: pointer;
            transition: all var(--transition-smooth);
            box-shadow: 0 0 40px rgba(255,215,0,0.35);
            animation: pulse-ring 2.2s infinite;
        }

        .hero-play-btn i {
            font-size: 2rem;
            color: var(--bg-dark);
            margin-left: 4px;
        }

        .hero-play-btn:hover {
            transform: scale(1.08);
            box-shadow: 0 0 60px rgba(255,215,0,0.6);
        }

        @keyframes pulse-ring {
            0% { box-shadow: 0 0 0 0 rgba(255,215,0,0.5); }
            70% { box-shadow: 0 0 0 30px rgba(255,215,0,0); }
            100% { box-shadow: 0 0 0 0 rgba(255,215,0,0); }
        }

        /* ========== SECTION COMMONS ========== */
        section { padding: 80px 0; }

        .section-label {
            display: inline-block;
            color: var(--accent-gold);
            font-weight: 700;
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 12px;
        }

        .section-title {
            font-family: var(--font-heading);
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--text-primary);
            line-height: 1.2;
        }

        .section-desc {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 640px;
            margin-bottom: 40px;
            line-height: 1.65;
        }

        /* ========== KÊNH TẢI (Channel Highlights) ========== */
        .channel-section {
            background: var(--bg-secondary);
        }

        .channel-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 28px;
            margin-top: 12px;
        }

        .channel-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: left;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .channel-card::before {
            content: '';
            position: absolute;
            top: 0; left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-gold), transparent);
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

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

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

        .channel-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: rgba(255,215,0,0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent-gold);
            margin-bottom: 18px;
        }

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

        .channel-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== SUCCESS STATS BAR ========== */
        .stats-bar {
            background: var(--bg-dark);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            padding: 48px 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 32px;
            text-align: center;
        }

        .stat-item {
            padding: 16px;
        }

        .stat-value {
            font-family: var(--font-heading);
            font-size: 2.6rem;
            font-weight: 900;
            color: var(--accent-gold);
            line-height: 1;
            margin-bottom: 8px;
        }

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

        /* ========== LEAD FORM (线索表单) ========== */
        .lead-section {
            background: var(--bg-primary);
        }

        .lead-form-wrapper {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            max-width: 680px;
            margin: 0 auto;
        }

        .lead-form-wrapper h2 {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            margin-bottom: 8px;
        }

        .lead-form-wrapper .sub {
            color: var(--text-muted);
            margin-bottom: 28px;
        }

        .form-row {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .form-row input {
            flex: 1;
            min-width: 200px;
            padding: 14px 18px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-subtle);
            background: var(--bg-dark);
            color: var(--text-primary);
            font-size: 0.95rem;
            transition: border var(--transition-fast);
        }

        .form-row input:focus {
            border-color: var(--accent-gold);
            outline: none;
            box-shadow: 0 0 0 3px rgba(255,215,0,0.1);
        }

        .form-row button {
            background: linear-gradient(135deg, var(--accent-gold), #F0A500);
            color: var(--bg-dark);
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.95rem;
            white-space: nowrap;
            transition: all var(--transition-fast);
        }

        .form-row button:hover {
            box-shadow: 0 6px 22px rgba(255,215,0,0.4);
            transform: translateY(-1px);
        }

        /* ========== NEWS / CMS LISTING ========== */
        .news-section {
            background: var(--bg-secondary);
        }

        .news-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            align-items: start;
        }

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

        .news-item {
            display: flex;
            gap: 16px;
            padding: 18px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid transparent;
            transition: all var(--transition-fast);
            align-items: flex-start;
        }

        .news-item:hover {
            border-color: var(--border-subtle);
            box-shadow: var(--shadow-card);
        }

        .news-item .news-index {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--accent-gold);
            min-width: 36px;
            line-height: 1;
        }

        .news-item .news-content h4 {
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            margin-bottom: 4px;
            line-height: 1.4;
        }

        .news-item .news-content .news-excerpt {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 6px;
        }

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

        .news-empty {
            color: var(--text-muted);
            font-style: italic;
            padding: 24px;
        }

        .news-sidebar {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--border-subtle);
        }

        .news-sidebar h3 {
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 16px;
            color: var(--accent-gold);
        }

        .news-sidebar ul li {
            padding: 8px 0;
            border-bottom: 1px solid rgba(255,255,255,0.05);
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        /* ========== PRIVACY / SECURITY ========== */
        .privacy-section {
            background: var(--bg-dark);
        }

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

        .privacy-card {
            text-align: left;
            padding: 28px 24px;
            background: rgba(255,255,255,0.02);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255,255,255,0.04);
        }

        .privacy-card i {
            font-size: 1.8rem;
            color: var(--accent-gold);
            margin-bottom: 12px;
        }

        .privacy-card h4 {
            font-weight: 700;
            margin-bottom: 8px;
        }

        .privacy-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.55;
        }

        /* ========== BONUS: BRAND STORY ========== */
        .brand-story {
            background: var(--bg-primary);
        }

        .brand-story-inner {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            align-items: center;
        }

        .brand-story-text {
            flex: 1;
            min-width: 280px;
        }

        .brand-story-text h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            margin-bottom: 18px;
        }

        .brand-story-text p {
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .brand-story-image {
            flex: 1;
            min-width: 280px;
        }

        .brand-story-image img {
            border-radius: var(--radius-xl);
            border: 2px solid var(--border-subtle);
        }

        /* ========== BONUS: ACCORDION FAQ ========== */
        .accordion-section {
            background: var(--bg-secondary);
        }

        .accordion-item {
            border-bottom: 1px solid var(--border-subtle);
            padding: 0;
        }

        .accordion-header {
            width: 100%;
            background: none;
            border: none;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 1.05rem;
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            text-align: left;
            transition: color var(--transition-fast);
        }

        .accordion-header:hover { color: var(--accent-gold); }
        .accordion-header i { transition: transform var(--transition-fast); }
        .accordion-header.active i { transform: rotate(180deg); }

        .accordion-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            color: var(--text-muted);
            line-height: 1.7;
            padding: 0 0 0 0;
        }

        .accordion-body.open {
            max-height: 300px;
            padding-bottom: 18px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-dark);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 28px;
        }

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

        .footer-col h4 {
            font-weight: 700;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 16px;
            color: var(--accent-gold);
        }

        .footer-col a,
        .footer-col p {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: block;
            margin-bottom: 8px;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

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

        .footer-badges span {
            background: rgba(255,215,0,0.1);
            border: 1px solid var(--border-subtle);
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            color: var(--accent-gold);
        }

        /* ========== FAB ========== */
        .fab {
            position: fixed;
            left: 20px;
            bottom: 90px;
            z-index: 900;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-dark);
            border: 2px solid var(--accent-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-gold);
            cursor: pointer;
            box-shadow: var(--shadow-gold);
            transition: all var(--transition-smooth);
            animation: float 3s ease-in-out infinite;
            opacity: 0.75;
        }

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

        .fab .notification-dot {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 12px;
            height: 12px;
            background: var(--accent-red);
            border-radius: 50%;
            border: 2px solid var(--bg-dark);
            animation: blink 1.6s infinite;
        }

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

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

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .news-layout { grid-template-columns: 1fr; }
            .news-sidebar { order: -1; }
            .hero h1 { font-size: 2.2rem; }
            .hero p { font-size: 1rem; }
        }

        @media (max-width: 768px) {
            .nav-links { display: none; }
            .mobile-menu-toggle { display: block; }
            .nav-actions { gap: 8px; }
            .btn-login, .btn-signup { padding: 8px 14px; font-size: 0.8rem; }

            .hero { min-height: 70vh; }
            .hero h1 { font-size: 1.8rem; }
            .hero p { font-size: 0.92rem; }
            .hero-play-btn { width: 64px; height: 64px; }
            .hero-play-btn i { font-size: 1.5rem; }

            section { padding: 56px 0; }
            .lead-form-wrapper { padding: 28px 20px; }
            .form-row { flex-direction: column; }
            .brand-story-inner { flex-direction: column; }

            .fab { left: 12px; bottom: 70px; width: 48px; height: 48px; font-size: 1.2rem; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero h1 { font-size: 1.5rem; }
            .hero-cta-group { flex-direction: column; align-items: stretch; }
            .btn-primary, .btn-outline { justify-content: center; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .stat-value { font-size: 2rem; }
        }

/* roulang page: article */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --bg-card: #1C1C1E;
            --bg-card-hover: #242426;
            --accent-primary: #FF4500;
            --accent-secondary: #FF0000;
            --accent-glow: rgba(255,69,0,0.3);
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --text-muted: #999999;
            --border-subtle: #2A2A2D;
            --border-accent: #FF4500;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 4px 20px rgba(0,0,0,0.3);
            --shadow-card-hover: 0 12px 32px rgba(255,69,0,0.2);
            --shadow-btn: 0 4px 14px rgba(255,69,0,0.4);
            --font-main: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', Arial, sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
            --header-h: 72px;
        }

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

        html { scroll-behavior: smooth; }

        body {
            font-family: var(--font-main);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: inherit; transition: color var(--transition-fast); }
        ul, ol { list-style: none; }

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

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11,11,11,0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            height: var(--header-h);
            display: flex;
            align-items: center;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .logo {
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--text-primary);
            letter-spacing: -0.3px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            background: var(--accent-primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
        }

        .nav-links { display: flex; gap: 32px; align-items: center; }
        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 6px 0;
            position: relative;
            transition: color var(--transition-fast);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-primary);
            transition: width var(--transition-smooth);
        }
        .nav-links a:hover { color: var(--text-primary); }
        .nav-links a:hover::after { width: 100%; }
        .nav-links a.active { color: var(--accent-primary); font-weight: 600; }
        .nav-links a.active::after { width: 100%; }

        .header-actions { display: flex; gap: 10px; align-items: center; }
        .btn-login {
            background: transparent;
            border: 1px solid var(--text-secondary);
            color: var(--text-primary);
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .btn-login:hover { border-color: var(--text-primary); }
        .btn-signup {
            background: var(--accent-primary);
            border: none;
            color: #fff;
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            box-shadow: var(--shadow-btn);
            transition: all var(--transition-fast);
        }
        .btn-signup:hover { background: #FF5722; transform: translateY(-1px); box-shadow: 0 6px 20px rgba(255,69,0,0.5); }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
        }

        /* Main Layout */
        .article-main {
            flex: 1;
            padding: 40px 0 60px;
        }

        .article-layout {
            display: flex;
            gap: 48px;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

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

        .article-sidebar {
            width: 320px;
            flex-shrink: 0;
        }

        /* Article Hero */
        .article-hero {
            margin-bottom: 36px;
        }

        .article-category-badge {
            display: inline-block;
            background: rgba(255,69,0,0.15);
            color: var(--accent-primary);
            font-weight: 700;
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.8px;
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: 16px;
        }

        .article-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            color: var(--text-primary);
            letter-spacing: -0.5px;
        }

        .article-meta {
            display: flex;
            gap: 20px;
            color: var(--text-muted);
            font-size: 0.9rem;
            flex-wrap: wrap;
            align-items: center;
        }

        .article-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* Featured Image */
        .article-featured-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-bottom: 36px;
            box-shadow: var(--shadow-card);
            position: relative;
        }
        .article-featured-image img {
            width: 100%;
            object-fit: cover;
            max-height: 480px;
        }

        /* Article Body */
        .article-body {
            font-size: 1.1rem;
            line-height: 1.75;
            color: var(--text-secondary);
        }

        .article-body p {
            margin-bottom: 20px;
        }

        .article-body h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 36px 0 16px;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--border-subtle);
        }

        .article-body h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 28px 0 12px;
        }

        .article-body blockquote {
            background: var(--bg-secondary);
            border-left: 4px solid var(--accent-primary);
            padding: 20px 24px;
            margin: 28px 0;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            font-style: italic;
            color: var(--text-secondary);
        }

        .article-body ul, .article-body ol {
            margin: 16px 0;
            padding-left: 24px;
        }

        .article-body ul { list-style: disc; }
        .article-body ol { list-style: decimal; }
        .article-body li { margin-bottom: 8px; }

        .article-body a {
            color: var(--accent-primary);
            text-decoration: underline;
            font-weight: 500;
        }
        .article-body a:hover { color: #FF5722; }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 24px 0;
        }

        /* Article Footer */
        .article-footer {
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid var(--border-subtle);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }

        .article-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .article-tag {
            background: var(--bg-secondary);
            color: var(--text-secondary);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            transition: all var(--transition-fast);
            border: 1px solid var(--border-subtle);
        }
        .article-tag:hover {
            background: var(--accent-primary);
            color: #fff;
            border-color: var(--accent-primary);
        }

        .article-share {
            display: flex;
            gap: 10px;
        }
        .share-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .share-btn:hover {
            background: var(--accent-primary);
            color: #fff;
            border-color: var(--accent-primary);
        }

        /* Sidebar */
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 24px;
            margin-bottom: 24px;
            border: 1px solid var(--border-subtle);
        }

        .sidebar-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .sidebar-download-link {
            display: flex;
            align-items: center;
            gap: 12px;
            background: var(--bg-secondary);
            padding: 14px 16px;
            border-radius: var(--radius-md);
            margin-bottom: 10px;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }
        .sidebar-download-link:hover {
            border-color: var(--accent-primary);
            background: var(--bg-card-hover);
        }
        .sidebar-download-link .dl-icon {
            width: 40px;
            height: 40px;
            background: var(--accent-primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
        }
        .sidebar-download-link .dl-info {
            flex: 1;
        }
        .sidebar-download-link .dl-label {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .sidebar-download-link .dl-name {
            font-weight: 700;
            font-size: 0.95rem;
        }

        .sidebar-cta {
            background: linear-gradient(135deg, #FF4500 0%, #D32F2F 100%);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            color: #fff;
            margin-bottom: 24px;
            box-shadow: var(--shadow-card-hover);
        }
        .sidebar-cta h3 { color: #fff; font-size: 1.3rem; margin-bottom: 12px; }
        .sidebar-cta p { font-size: 0.95rem; margin-bottom: 18px; opacity: 0.9; }
        .btn-cta-sidebar {
            background: #fff;
            color: #D32F2F;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 800;
            display: inline-block;
            transition: all var(--transition-fast);
            border: none;
            cursor: pointer;
            font-size: 1rem;
        }
        .btn-cta-sidebar:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.3); }

        /* Related Articles */
        .related-articles {
            margin-top: 60px;
            padding-top: 40px;
            border-top: 1px solid var(--border-subtle);
        }
        .related-articles h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 28px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
            border: 1px solid var(--border-subtle);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--accent-primary);
        }
        .related-card img {
            width: 100%;
            height: 160px;
            object-fit: cover;
        }
        .related-card-body {
            padding: 16px;
        }
        .related-card-body h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .related-card-body .related-date {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* Not Found */
        .not-found {
            text-align: center;
            padding: 80px 24px;
        }
        .not-found h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .not-found p {
            color: var(--text-secondary);
            margin-bottom: 28px;
            font-size: 1.1rem;
        }
        .btn-back-home {
            display: inline-block;
            background: var(--accent-primary);
            color: #fff;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-btn);
        }
        .btn-back-home:hover { background: #FF5722; transform: translateY(-2px); }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text-primary);
        }
        .footer-col p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .footer-col a {
            display: block;
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 8px;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover { color: var(--accent-primary); }
        .footer-badges {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-top: 12px;
        }
        .footer-badges span {
            background: var(--bg-card);
            color: var(--text-secondary);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 700;
            border: 1px solid var(--border-subtle);
        }
        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid var(--border-subtle);
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* FAB */
        .fab-btn {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 28px;
            background: rgba(0,0,0,0.7);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid var(--accent-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 1.5rem;
            color: var(--accent-primary);
            box-shadow: 0 0 18px var(--accent-glow);
            transition: all var(--transition-smooth);
            animation: fabPulse 2.5s ease-in-out infinite;
        }
        .fab-btn:hover {
            transform: scale(1.12);
            box-shadow: 0 0 30px rgba(255,69,0,0.7);
            background: rgba(22,22,22,0.9);
        }
        @keyframes fabPulse {
            0%, 100% { opacity: 0.75; }
            50% { opacity: 1; }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .article-layout { flex-direction: column; }
            .article-sidebar { width: 100%; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 768px) {
            .nav-links { display: none; }
            .mobile-menu-toggle { display: block; }
            .header-actions .btn-login,
            .header-actions .btn-signup { padding: 6px 14px; font-size: 0.8rem; }
            .article-hero h1 { font-size: 1.8rem; }
            .article-body { font-size: 1rem; }
            .article-body h2 { font-size: 1.35rem; }
            .related-grid { grid-template-columns: 1fr; }
            .article-footer { flex-direction: column; align-items: flex-start; }
            .footer-grid { grid-template-columns: 1fr; }
            .fab-btn { width: 48px; height: 48px; left: 12px; bottom: 80px; font-size: 1.3rem; }
        }

        @media (max-width: 520px) {
            .header-inner { padding: 0 12px; }
            .container { padding: 0 16px; }
            .article-layout { padding: 0 16px; }
            .article-hero h1 { font-size: 1.5rem; }
            .article-meta { font-size: 0.8rem; gap: 12px; }
        }

        @media (min-width: 769px) {
            .mobile-menu-toggle { display: none; }
            .nav-links { display: flex; }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: #111827;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-gradient: linear-gradient(135deg, #0052FF 0%, #00F0FF 100%);
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --border-subtle: rgba(0, 240, 255, 0.15);
            --border-glow: rgba(0, 240, 255, 0.5);
            --shadow-neon: 0 0 20px rgba(0, 240, 255, 0.3);
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --font-heading: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --font-body: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
            --nav-height: 72px;
        }

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

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

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

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

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

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

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

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--nav-height);
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            z-index: 1000;
            transition: background var(--transition-smooth);
        }

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

        .logo {
            font-family: var(--font-heading);
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .logo-icon {
            display: inline-block;
            width: 36px;
            height: 36px;
            background: var(--accent-gradient);
            border-radius: 10px;
            margin-right: 10px;
            vertical-align: middle;
            position: relative;
        }

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

        .nav-links a {
            display: block;
            padding: 10px 18px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

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

        .nav-links a.active {
            color: #fff;
            background: var(--accent-gradient);
            box-shadow: 0 4px 15px rgba(0, 82, 255, 0.3);
            font-weight: 600;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login {
            padding: 10px 20px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            border: 1px solid var(--border-subtle);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

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

        .btn-signup {
            padding: 10px 22px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 700;
            color: #fff;
            background: var(--accent-gradient);
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            box-shadow: 0 4px 18px rgba(0, 82, 255, 0.35);
        }

        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 25px rgba(0, 82, 255, 0.5);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.4rem;
            cursor: pointer;
            padding: 8px;
        }

        /* Hero Section */
        .page-hero {
            padding-top: calc(var(--nav-height) + 60px);
            padding-bottom: 60px;
            background: radial-gradient(ellipse at 30% 20%, rgba(0, 82, 255, 0.12) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 50%, rgba(0, 240, 255, 0.08) 0%, transparent 50%);
        }

        .hero-series-bar {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }

        .hero-series-tag {
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-secondary);
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .hero-series-tag:hover,
        .hero-series-tag.active-tag {
            color: #fff;
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.1);
            box-shadow: 0 0 14px rgba(0, 240, 255, 0.2);
        }

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

        .hero-content h1 {
            font-family: var(--font-heading);
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: -0.03em;
            color: #fff;
        }

        .hero-content h1 .highlight {
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-sub {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 28px;
            max-width: 480px;
        }

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

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 14px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            color: var(--text-secondary);
        }

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

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

        .btn-primary-glow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            background: var(--accent-gradient);
            border: none;
            cursor: pointer;
            transition: all var(--transition-smooth);
            box-shadow: 0 6px 25px rgba(0, 82, 255, 0.4);
            white-space: nowrap;
        }

        .btn-primary-glow:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 35px rgba(0, 240, 255, 0.5);
        }

        .btn-outline-neon {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 700;
            color: var(--accent-cyan);
            background: transparent;
            border: 2px solid var(--border-glow);
            cursor: pointer;
            transition: all var(--transition-smooth);
            white-space: nowrap;
        }

        .btn-outline-neon:hover {
            background: rgba(0, 240, 255, 0.08);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.25);
        }

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

        .hero-image-frame {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card), var(--shadow-neon);
            border: 2px solid var(--border-subtle);
            max-width: 420px;
            width: 100%;
        }

        .hero-image-frame img {
            width: 100%;
            height: auto;
            display: block;
        }

        .hero-float-card {
            position: absolute;
            bottom: -15px;
            left: -15px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 14px 20px;
            box-shadow: var(--shadow-card);
        }

        .float-card-stat {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--accent-cyan);
        }

        .float-card-label {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

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

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--accent-cyan);
            margin-bottom: 12px;
        }

        .section-title {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            color: #fff;
            letter-spacing: -0.02em;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 40px;
            max-width: 640px;
        }

        /* Pain Points Grid */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .pain-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: all var(--transition-smooth);
        }

        .pain-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 24px rgba(0, 240, 255, 0.12);
        }

        .pain-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(0, 240, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            font-size: 1.3rem;
            color: var(--accent-cyan);
        }

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

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

        /* Solution Flow */
        .solution-steps {
            display: flex;
            gap: 0;
            align-items: stretch;
            position: relative;
            counter-reset: step;
        }

        .solution-step {
            flex: 1;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            position: relative;
            transition: all var(--transition-smooth);
            text-align: left;
        }

        .solution-step:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.1);
        }

        .solution-step .step-num {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--accent-gradient);
            color: #fff;
            font-weight: 800;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }

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

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

        .solution-connector {
            width: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.2rem;
            flex-shrink: 0;
        }

        /* Results */
        .results-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .result-stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: left;
            transition: all var(--transition-smooth);
        }

        .result-stat-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.1);
        }

        .result-stat-card .stat-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-cyan);
            margin-bottom: 6px;
        }

        .result-stat-card .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* Testimonials */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .testimonial-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: all var(--transition-smooth);
        }

        .testimonial-card .stars {
            color: #FFD700;
            margin-bottom: 12px;
            font-size: 0.95rem;
        }

        .testimonial-card .quote {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
            font-style: italic;
        }

        .testimonial-author {
            font-size: 0.8rem;
            color: var(--text-muted);
            font-weight: 600;
        }

        /* FAQ */
        .faq-list {
            max-width: 720px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item summary {
            padding: 18px 24px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            color: #fff;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

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

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

        .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* CTA Section */
        .cta-section {
            padding: 80px 0;
            background: radial-gradient(ellipse at center, rgba(0, 82, 255, 0.1) 0%, transparent 60%);
            text-align: left;
        }

        .cta-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            flex-wrap: wrap;
        }

        .cta-card h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 8px;
        }

        .cta-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            max-width: 400px;
        }

        .cta-buttons {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 50px 0 30px;
        }

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

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-col p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 14px;
        }

        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 8px;
            transition: color var(--transition-fast);
        }

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

        .footer-badges {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .footer-badges span {
            padding: 5px 12px;
            border-radius: 16px;
            font-size: 0.72rem;
            font-weight: 700;
            background: rgba(0, 240, 255, 0.08);
            color: var(--accent-cyan);
            border: 1px solid var(--border-subtle);
        }

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

        .footer-bottom p {
            font-size: 0.78rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 999;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all var(--transition-smooth);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.35);
            color: var(--accent-cyan);
            font-size: 1.3rem;
        }

        .fab-left::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50%;
            background: linear-gradient(135deg, #0052FF, #00F0FF);
            z-index: -1;
            opacity: 0.8;
        }

        .fab-left:hover {
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.6);
        }

        .fab-left .fab-notify {
            position: absolute;
            top: 4px;
            right: 6px;
            width: 10px;
            height: 10px;
            background: #FF007F;
            border-radius: 50%;
            animation: blink-neon 1.2s infinite;
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
            .pain-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .results-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonials-grid {
                grid-template-columns: 1fr 1fr;
            }
            .solution-steps {
                flex-wrap: wrap;
                gap: 16px;
            }
            .solution-connector {
                display: none;
            }
            .solution-step {
                flex: 1 1 100%;
                min-width: auto;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.96);
                backdrop-filter: blur(20px);
                padding: 20px;
                border-bottom: 1px solid var(--border-subtle);
                gap: 4px;
            }
            .nav-links.mobile-open {
                display: flex;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .header-actions .btn-login,
            .header-actions .btn-signup {
                padding: 8px 16px;
                font-size: 0.78rem;
            }
            .pain-grid {
                grid-template-columns: 1fr;
            }
            .results-row {
                grid-template-columns: 1fr;
            }
            .testimonials-grid {
                grid-template-columns: 1fr;
            }
            .cta-card {
                flex-direction: column;
                text-align: left;
                align-items: flex-start;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 1.6rem;
            }
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }
            .hero-series-tag {
                padding: 6px 14px;
                font-size: 0.75rem;
            }
            .btn-primary-glow,
            .btn-outline-neon {
                padding: 12px 22px;
                font-size: 0.9rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary-bg: #0A2E1C;
            --secondary-bg: #123E25;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-white: #FFFFFF;
            --text-mint: #D1F2EB;
            --text-muted: #A0C5B8;
            --border-gold: rgba(255,215,0,0.3);
            --card-bg: rgba(18,62,37,0.7);
            --shadow-gold: 0 4px 20px rgba(255,215,0,0.15);
            --shadow-dark: 0 8px 32px rgba(0,0,0,0.4);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --transition-base: all 0.3s ease;
            --font-heading: 'Segoe UI', 'Roboto', sans-serif;
            --font-body: 'Segoe UI', 'Roboto', sans-serif;
        }

        * { box-sizing: border-box; }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-body);
            background: var(--primary-bg);
            color: var(--text-white);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

        a { text-decoration: none; color: inherit; transition: var(--transition-base); }
        img { max-width: 100%; height: auto; display: block; }

        /* ========== HEADER / NAV ========== */
        .site-header {
            background: rgba(10,46,28,0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-gold);
            position: sticky;
            top: 0;
            z-index: 1050;
            padding: 12px 0;
            transition: var(--transition-base);
        }

        .header-container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--accent-gold);
            letter-spacing: -0.3px;
            line-height: 1.2;
        }

        .logo-area i { font-size: 1.6rem; }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .nav-links a {
            color: var(--text-mint);
            padding: 10px 18px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition-base);
            background: transparent;
            border: 1px solid transparent;
            white-space: nowrap;
        }

        .nav-links a:hover,
        .nav-links a.active {
            background: rgba(255,215,0,0.12);
            color: var(--accent-gold);
            border-color: var(--accent-gold);
        }

        .header-buttons {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login {
            color: var(--text-mint);
            font-weight: 600;
            padding: 10px 18px;
            border-radius: 50px;
            background: transparent;
            transition: var(--transition-base);
            font-size: 0.95rem;
        }

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

        .btn-signup {
            background: linear-gradient(135deg, #FFD700 0%, #FFA000 100%);
            color: #0A2E1C;
            font-weight: 700;
            padding: 12px 24px;
            border-radius: 50px;
            transition: var(--transition-base);
            font-size: 0.95rem;
            box-shadow: var(--shadow-gold);
            border: none;
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255,215,0,0.35);
            color: #0A2E1C;
        }

        .hamburger {
            display: none;
            background: none;
            border: 1px solid var(--border-gold);
            color: var(--accent-gold);
            font-size: 1.5rem;
            padding: 8px 14px;
            border-radius: 8px;
            cursor: pointer;
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, #0A2E1C 0%, #061F12 100%);
            padding: 70px 0 60px;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -80px; right: -100px;
            width: 500px; height: 500px;
            background: radial-gradient(circle, rgba(255,215,0,0.08) 0%, transparent 70%);
            border-radius: 50%;
        }

        .hero-container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 20px;
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(211,47,47,0.2);
            color: #FF5252;
            border: 1px solid rgba(211,47,47,0.4);
            padding: 6px 16px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.5px;
            margin-bottom: 18px;
        }

        .hero-badge i { margin-right: 6px; }

        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.18;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .hero-title span { color: var(--accent-gold); }

        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-muted);
            margin-bottom: 28px;
            max-width: 600px;
            line-height: 1.65;
        }

        .coupon-wall {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 32px;
        }

        .coupon-main {
            flex: 0 0 340px;
            background: linear-gradient(135deg, #1B4A33 0%, #0F3322 100%);
            border: 2px dashed var(--accent-gold);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            text-align: center;
            box-shadow: var(--shadow-dark);
            transition: var(--transition-base);
        }

        .coupon-main:hover {
            border-color: #FFB300;
            box-shadow: 0 12px 36px rgba(255,215,0,0.25);
        }

        .coupon-label {
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--accent-red);
            font-weight: 700;
            margin-bottom: 8px;
        }

        .coupon-amount {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1;
            margin-bottom: 6px;
        }

        .coupon-amount small { font-size: 1.2rem; }

        .coupon-desc {
            color: var(--text-mint);
            font-size: 0.95rem;
            margin-bottom: 20px;
        }

        .btn-claim {
            display: inline-block;
            background: var(--accent-red);
            color: white;
            font-weight: 700;
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 1rem;
            transition: var(--transition-base);
            border: none;
            box-shadow: 0 4px 16px rgba(211,47,47,0.4);
        }

        .btn-claim:hover {
            background: #B71C1C;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(211,47,47,0.55);
            color: white;
        }

        .coupon-sub-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            flex: 1;
        }

        .coupon-sub-item {
            background: rgba(255,255,255,0.04);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-sm);
            padding: 14px 18px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: var(--transition-base);
        }

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

        .sub-info { display: flex; align-items: center; gap: 10px; }

        .sub-info i { color: var(--accent-gold); font-size: 1.2rem; }

        .sub-text { font-weight: 600; font-size: 0.95rem; }

        .sub-btn {
            background: transparent;
            border: 1px solid var(--accent-gold);
            color: var(--accent-gold);
            padding: 6px 16px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.85rem;
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .sub-btn:hover {
            background: var(--accent-gold);
            color: #0A2E1C;
        }

        .hero-stats {
            display: flex;
            gap: 30px;
            flex-wrap: wrap;
            margin-top: 10px;
        }

        .hero-stat-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            color: var(--text-mint);
            font-size: 0.95rem;
        }

        .hero-stat-item i { color: var(--accent-gold); font-size: 1.1rem; }

        /* ========== SECTIONS ========== */
        .section {
            padding: 60px 0;
        }

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

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

        .section-label {
            display: inline-block;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--accent-gold);
            font-weight: 700;
            font-size: 0.8rem;
            margin-bottom: 8px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 14px;
            letter-spacing: -0.3px;
            line-height: 1.25;
        }

        .section-desc {
            color: var(--text-muted);
            font-size: 1rem;
            margin-bottom: 32px;
            max-width: 680px;
            line-height: 1.6;
        }

        /* Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 24px;
        }

        .step-card {
            background: var(--card-bg);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            text-align: left;
            transition: var(--transition-base);
            position: relative;
        }

        .step-number {
            width: 44px; height: 44px;
            background: var(--accent-gold);
            color: #0A2E1C;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            margin-bottom: 14px;
        }

        .step-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .step-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin: 0;
            line-height: 1.55;
        }

        /* Feature list block */
        .feature-list-block {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .feature-item {
            background: rgba(255,255,255,0.03);
            border-radius: var(--radius-sm);
            padding: 20px;
            border-left: 4px solid var(--accent-gold);
            transition: var(--transition-base);
        }

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

        .feature-item i {
            color: var(--accent-gold);
            font-size: 1.5rem;
            margin-bottom: 10px;
        }

        .feature-item h4 { font-size: 1.05rem; margin-bottom: 6px; }

        .feature-item p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin: 0;
            line-height: 1.55;
        }

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

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-sm);
            overflow: hidden;
        }

        .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            color: var(--text-white);
            font-weight: 700;
            font-size: 1rem;
            padding: 18px 22px;
            text-align: left;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: var(--transition-base);
        }

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

        .faq-question i { transition: transform 0.3s ease; font-size: 0.9rem; }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 22px;
        }

        .faq-answer p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
            margin: 0;
            padding-bottom: 18px;
        }

        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-item.open .faq-answer { max-height: 260px; }

        /* CTA */
        .cta-section {
            text-align: center;
            padding: 70px 0;
            background: linear-gradient(135deg, rgba(255,215,0,0.06) 0%, transparent 100%);
        }

        .btn-cta-lg {
            display: inline-block;
            background: var(--accent-red);
            color: white;
            font-weight: 700;
            padding: 16px 36px;
            border-radius: 50px;
            font-size: 1.05rem;
            transition: var(--transition-base);
            box-shadow: 0 4px 16px rgba(211,47,47,0.4);
            margin-top: 18px;
        }

        .btn-cta-lg:hover {
            background: #B71C1C;
            transform: translateY(-3px);
            box-shadow: 0 10px 28px rgba(211,47,47,0.55);
            color: white;
        }

        /* ========== FAB ========== */
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 80px;
            z-index: 1200;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, #1B4A33, #0A2E1C);
            border: 2px solid var(--accent-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-gold);
            font-size: 1.4rem;
            box-shadow: var(--shadow-gold);
            cursor: pointer;
            transition: var(--transition-base);
            opacity: 0.75;
        }

        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 8px 28px rgba(255,215,0,0.4);
        }

        .fab-badge {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 16px;
            height: 16px;
            background: var(--accent-red);
            border-radius: 50%;
            border: 2px solid #0A2E1C;
            animation: pulse-badge 2s infinite;
        }

        @keyframes pulse-badge {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.3); }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #061F12;
            border-top: 1px solid var(--border-gold);
            padding: 48px 0 24px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 30px;
            margin-bottom: 32px;
        }

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

        .footer-col a {
            display: block;
            color: var(--text-muted);
            margin-bottom: 8px;
            transition: var(--transition-base);
        }

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

        .footer-badges {
            display: flex;
            gap: 8px;
            margin-top: 12px;
            flex-wrap: wrap;
        }

        .footer-badges span {
            background: rgba(255,255,255,0.08);
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--text-mint);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,215,0,0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 992px) {
            .hero-title { font-size: 2.2rem; }
            .coupon-main { flex: 0 0 100%; }

            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: rgba(10,46,28,0.98);
                padding: 12px;
                border-radius: var(--radius-md);
                margin-top: 8px;
                border: 1px solid var(--border-gold);
            }

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

            .hamburger { display: block; }
        }

        @media (max-width: 768px) {
            .hero-title { font-size: 1.8rem; }
            .section-title { font-size: 1.6rem; }
            .hero-section { padding: 50px 0 40px; }
            .section { padding: 40px 0; }
            .header-container { gap: 10px; }
            .logo-area { font-size: 1.1rem; }
            .btn-signup { padding: 10px 18px; font-size: 0.85rem; }
            .fab-left { left: 8px; bottom: 60px; width: 44px; height: 44px; font-size: 1.2rem; }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #1A1A1A;
            --bg-secondary: #121212;
            --bg-card: #242424;
            --accent-gold: #F0E68C;
            --accent-silver: #D5D8DC;
            --accent-platinum: #E5E8E8;
            --text-primary: #FFFFFF;
            --text-secondary: #B0B3B8;
            --text-muted: #7A7D81;
            --border-subtle: rgba(229, 232, 232, 0.15);
            --shadow-card: 0 10px 30px -10px rgba(0,0,0,0.5);
            --shadow-button: 0 4px 15px rgba(240, 230, 140, 0.25);
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 8px;
            --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1280px;
            --nav-height: 80px;
            --font-heading: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --font-body: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: var(--bg-primary);
            color: var(--text-primary);
            font-family: var(--font-body);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        .container {
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, .btn {
            cursor: pointer;
            font-family: var(--font-body);
            border: none;
            outline: none;
            transition: var(--transition-smooth);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            text-align: center;
        }
        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--nav-height);
            background-color: rgba(18, 18, 18, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            z-index: 1000;
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 700;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, var(--accent-platinum) 0%, var(--accent-gold) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 36px;
        }
        .nav-links a {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            padding: 8px 0;
            transition: color 0.2s;
        }
        .nav-links a:hover, .nav-links a.active {
            color: var(--text-primary);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--accent-gold);
            border-radius: 2px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .btn-login {
            background: transparent;
            color: var(--text-primary);
            font-weight: 500;
        }
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-gold) 0%, #D4AF37 100%);
            color: #121212;
            padding: 10px 24px;
            border-radius: 30px;
            font-weight: 600;
            box-shadow: var(--shadow-button);
        }
        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(240, 230, 140, 0.4);
        }
        .mobile-menu-btn {
            display: none;
            background: transparent;
            color: var(--text-primary);
            font-size: 1.6rem;
            padding: 4px;
        }
        /* Hero Section */
        .category-hero {
            padding-top: calc(var(--nav-height) + 40px);
            padding-bottom: 60px;
            background: radial-gradient(circle at 30% 20%, rgba(240,230,140,0.06) 0%, transparent 60%);
            display: flex;
            align-items: center;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .hero-content h1 {
            font-family: var(--font-heading);
            font-size: 3.2rem;
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 20px;
            background: linear-gradient(to right, #FFFFFF, #E5E8E8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-content .subtitle {
            font-size: 1.2rem;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .btn-primary {
            background: var(--accent-gold);
            color: #121212;
            padding: 14px 32px;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 700;
            letter-spacing: 0.3px;
            box-shadow: 0 6px 20px rgba(240,230,140,0.3);
        }
        .btn-primary:hover {
            background: #FFF;
            transform: translateY(-3px);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--accent-silver);
            color: var(--accent-silver);
            padding: 14px 32px;
            border-radius: 40px;
            font-weight: 600;
        }
        .btn-outline:hover {
            background: rgba(229,232,232,0.08);
        }
        .hero-visual {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 24px;
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-card);
        }
        .hero-visual img {
            border-radius: var(--radius-md);
            margin-bottom: 20px;
            width: 100%;
            object-fit: cover;
        }
        .ranking-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .ranking-list li {
            display: flex;
            align-items: center;
            justify-content: space-between;
            color: var(--text-secondary);
            font-size: 0.95rem;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-subtle);
        }
        .ranking-list li:last-child {
            border-bottom: none;
        }
        .ranking-list .rank-badge {
            background: var(--accent-gold);
            color: #121212;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.8rem;
            margin-right: 10px;
        }
        /* Features */
        .features-section {
            padding: 80px 0;
            background-color: var(--bg-secondary);
        }
        .section-title {
            font-family: var(--font-heading);
            font-size: 2.4rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            margin-bottom: 48px;
            max-width: 700px;
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            border: 1px solid var(--border-subtle);
            transition: var(--transition-smooth);
        }
        .feature-card:hover {
            transform: translateY(-8px);
            border-color: var(--accent-gold);
            box-shadow: 0 20px 35px -15px rgba(240,230,140,0.2);
        }
        .feature-icon {
            font-size: 2.4rem;
            color: var(--accent-gold);
            margin-bottom: 20px;
        }
        .feature-card h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .feature-card p {
            color: var(--text-secondary);
            line-height: 1.7;
        }
        /* Steps */
        .steps-section {
            padding: 80px 0;
        }
        .steps-container {
            display: flex;
            flex-direction: column;
            gap: 32px;
            margin-top: 40px;
        }
        .step-item {
            display: grid;
            grid-template-columns: 60px 1fr;
            gap: 28px;
            align-items: flex-start;
        }
        .step-number {
            background: var(--accent-gold);
            color: #121212;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            font-weight: 700;
            flex-shrink: 0;
        }
        .step-content h4 {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .step-content p {
            color: var(--text-secondary);
            line-height: 1.7;
        }
        /* Comparison */
        .compare-section {
            padding: 80px 0;
            background: var(--bg-secondary);
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 30px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
        }
        .compare-table th, .compare-table td {
            padding: 18px 20px;
            text-align: left;
            border-bottom: 1px solid var(--border-subtle);
            color: var(--text-secondary);
        }
        .compare-table th {
            background: #1E1E1E;
            font-weight: 600;
            color: var(--accent-platinum);
        }
        .compare-table tr:last-child td {
            border-bottom: none;
        }
        /* FAQ */
        .faq-section {
            padding: 80px 0;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            margin-top: 40px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
            padding: 20px 28px;
            transition: var(--transition-smooth);
        }
        .faq-item:hover {
            border-color: var(--accent-silver);
        }
        .faq-question {
            font-weight: 600;
            font-size: 1.1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
        }
        .faq-answer {
            color: var(--text-secondary);
            margin-top: 12px;
            line-height: 1.7;
        }
        /* CTA */
        .cta-section {
            padding: 80px 0;
            background: radial-gradient(circle at center, rgba(240,230,140,0.08) 0%, transparent 70%);
            text-align: center;
        }
        .cta-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            border: 1px solid var(--border-subtle);
        }
        .cta-card h2 {
            font-size: 2.5rem;
            margin-bottom: 20px;
        }
        /* Footer */
        .site-footer {
            background: #0A0A0A;
            padding: 60px 0 30px;
            border-top: 1px solid var(--border-subtle);
            color: var(--text-secondary);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col h4 {
            color: var(--text-primary);
            margin-bottom: 16px;
            font-size: 1.1rem;
        }
        .footer-col a {
            display: block;
            margin-bottom: 10px;
            color: var(--text-muted);
            font-size: 0.95rem;
        }
        .footer-col a:hover {
            color: var(--accent-gold);
        }
        .footer-badges {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }
        .footer-badges span {
            background: #1E1E1E;
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            color: var(--accent-silver);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            text-align: center;
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        /* FAB */
        .floating-fab {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 1100;
            background: rgba(18,18,18,0.8);
            backdrop-filter: blur(12px);
            width: 56px;
            height: 56px;
            border-radius: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--accent-gold);
            box-shadow: 0 0 18px rgba(240,230,140,0.35);
            transition: var(--transition-smooth);
            color: var(--accent-gold);
            font-size: 1.8rem;
        }
        .floating-fab:hover {
            transform: scale(1.1);
            background: #1E1E1E;
            box-shadow: 0 0 24px rgba(240,230,140,0.6);
        }
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .hero-content h1 {
                font-size: 2.3rem;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .compare-table th, .compare-table td {
                padding: 12px;
            }
        }