/* roulang page: index */
:root {
            --bg-primary: #0B3C25;
            --bg-secondary: #062315;
            --accent: #FFCC00;
            --accent-soft: #32CD32;
            --text-primary: #FFFDF0;
            --text-secondary: #C5E2D2;
            --border-subtle: rgba(255, 204, 0, 0.25);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --shadow-card: 0 6px 24px rgba(0, 0, 0, 0.28);
            --shadow-glow: 0 0 20px rgba(255, 204, 0, 0.22);
            --transition: all 0.25s ease;
        }

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

        html { scroll-behavior: smooth; }

        body {
            font-family: 'Be Vietnam Pro', 'Inter', system-ui, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        img { max-width: 100%; display: block; }
        a { text-decoration: none; color: inherit; transition: var(--transition); }
        button, input, select, textarea { font-family: inherit; font-size: inherit; }

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

        /* Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(6, 35, 21, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 204, 0, 0.18);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            gap: 20px;
        }

        .nav-logo {
            font-weight: 800;
            font-size: 1.05rem;
            letter-spacing: -0.02em;
            color: var(--accent);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

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

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

        .nav-links a {
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text-secondary);
            white-space: nowrap;
        }

        .nav-links a:hover, .nav-links a.active {
            color: var(--accent);
            background: rgba(255, 204, 0, 0.08);
        }

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

        .btn-login {
            padding: 9px 18px;
            font-size: 0.88rem;
            font-weight: 700;
            color: var(--text-primary);
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 999px;
            cursor: pointer;
            white-space: nowrap;
        }

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

        .btn-signup {
            padding: 9px 22px;
            font-size: 0.88rem;
            font-weight: 800;
            color: #062315;
            background: linear-gradient(135deg, #FFCC00, #FFB800);
            border: none;
            border-radius: 999px;
            cursor: pointer;
            white-space: nowrap;
            box-shadow: 0 2px 12px rgba(255, 204, 0, 0.35);
        }

        .btn-signup:hover { box-shadow: 0 4px 20px rgba(255, 204, 0, 0.55); transform: translateY(-1px); }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px;
        }

        /* Mobile nav */
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: rgba(6, 35, 21, 0.98);
            border-top: 1px solid rgba(255, 204, 0, 0.15);
            padding: 16px 24px;
            gap: 8px;
        }

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

        .mobile-nav a {
            padding: 12px 16px;
            border-radius: 10px;
            font-weight: 600;
            color: var(--text-secondary);
        }

        .mobile-nav a:hover, .mobile-nav a.active {
            color: var(--accent);
            background: rgba(255, 204, 0, 0.08);
        }

        /* Hero */
        .hero-section {
            position: relative;
            padding-top: 130px;
            padding-bottom: 80px;
            background: linear-gradient(135deg, #0B3C25 0%, #062315 55%, #0A2E1C 100%);
            overflow: hidden;
            min-height: 560px;
            display: flex;
            align-items: center;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            opacity: 0.28;
            z-index: 0;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: linear-gradient(180deg, rgba(6,35,21,0.65) 0%, rgba(11,60,37,0.85) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 680px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 204, 0, 0.15);
            border: 1px solid rgba(255, 204, 0, 0.4);
            color: var(--accent);
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 0.82rem;
            font-weight: 700;
            margin-bottom: 22px;
        }

        .hero-badge i { color: #FF6B6B; animation: pulse 1.5s infinite; }

        .hero-content h1 {
            font-size: clamp(2rem, 4.5vw, 3.4rem);
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.03em;
            margin-bottom: 18px;
            color: var(--text-primary);
        }

        .hero-content h1 .highlight {
            background: linear-gradient(135deg, #FFCC00, #FF9F00);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 580px;
            margin-bottom: 28px;
            line-height: 1.7;
        }

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

        .btn-hero-primary {
            padding: 14px 32px;
            font-size: 1rem;
            font-weight: 800;
            color: #062315;
            background: linear-gradient(135deg, #FFCC00, #FFB800);
            border: none;
            border-radius: 999px;
            cursor: pointer;
            box-shadow: 0 6px 24px rgba(255, 204, 0, 0.4);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-hero-primary:hover {
            box-shadow: 0 8px 32px rgba(255, 204, 0, 0.6);
            transform: translateY(-2px);
        }

        .btn-hero-secondary {
            padding: 14px 28px;
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: 999px;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-hero-secondary:hover {
            background: rgba(255, 255, 255, 0.16);
            border-color: var(--accent);
            color: var(--accent);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 204, 0, 0.2);
        }

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

        .hero-stat-value {
            font-size: 1.6rem;
            font-weight: 900;
            color: var(--accent);
        }

        .hero-stat-label {
            font-size: 0.82rem;
            color: var(--text-secondary);
        }

        /* Section */
        .section { padding: 70px 0; }
        .section-alt { background: var(--bg-secondary); }

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

        .section-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent);
            margin-bottom: 10px;
        }

        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.3rem);
            font-weight: 900;
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin-bottom: 12px;
        }

        .section-desc {
            font-size: 0.98rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.7;
        }

        /* Feature Cards */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 22px;
        }

        .feature-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 204, 0, 0.18);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: var(--transition);
            cursor: default;
        }

        .feature-card:hover {
            border-color: rgba(255, 204, 0, 0.5);
            background: rgba(255, 204, 0, 0.06);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }

        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(255, 204, 0, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent);
            margin-bottom: 18px;
        }

        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 800;
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* Comparison Table */
        .comparison-table-wrapper {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 204, 0, 0.2);
        }

        .comparison-table {
            width: 100%;
            min-width: 700px;
            border-collapse: collapse;
            background: rgba(255, 255, 255, 0.03);
        }

        .comparison-table th {
            text-align: left;
            padding: 18px 22px;
            font-size: 0.88rem;
            font-weight: 800;
            color: var(--accent);
            background: rgba(255, 204, 0, 0.08);
            border-bottom: 1px solid rgba(255, 204, 0, 0.25);
        }

        .comparison-table td {
            padding: 16px 22px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .comparison-table tr:last-child td { border-bottom: none; }
        .comparison-table td:first-child { font-weight: 700; color: var(--text-primary); }

        .badge-check {
            color: var(--lime);
            font-weight: 700;
        }

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

        /* Recommendation cards */
        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .recommend-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 204, 0, 0.2);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            position: relative;
        }

        .recommend-card:hover {
            border-color: rgba(255, 204, 0, 0.55);
            box-shadow: var(--shadow-glow);
            transform: translateY(-5px);
        }

        .recommend-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        .recommend-card-body {
            padding: 22px 24px 26px;
        }

        .recommend-tag {
            display: inline-block;
            background: rgba(255, 107, 107, 0.2);
            color: #FF6B6B;
            font-size: 0.72rem;
            font-weight: 800;
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 12px;
        }

        .recommend-card h3 {
            font-size: 1.15rem;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .recommend-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .btn-card-action {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            font-size: 0.85rem;
            font-weight: 700;
            color: #062315;
            background: linear-gradient(135deg, #FFCC00, #FFB800);
            border: none;
            border-radius: 999px;
            cursor: pointer;
        }

        .btn-card-action:hover { box-shadow: 0 4px 18px rgba(255, 204, 0, 0.5); }

        /* Info List */
        .info-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 12px;
        }

        .info-list-item {
            display: flex;
            gap: 16px;
            padding: 18px 20px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: var(--radius-sm);
            border-left: 3px solid var(--accent);
            transition: var(--transition);
        }

        .info-list-item:hover {
            background: rgba(255, 255, 255, 0.06);
            border-left-color: var(--lime);
        }

        .info-list-item .info-index {
            font-size: 0.9rem;
            font-weight: 900;
            color: var(--accent);
            min-width: 32px;
        }

        .info-list-item .info-title {
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .info-list-item .info-desc {
            font-size: 0.86rem;
            color: var(--text-secondary);
            line-height: 1.55;
        }

        .info-list-item a {
            color: var(--accent);
            font-weight: 700;
        }

        .info-list-item a:hover { text-decoration: underline; }

        /* CMS List */
        .cms-list-section .info-list-item {
            border-left-color: var(--lime);
        }

        /* Trust Bar */
        .trust-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            align-items: center;
            justify-content: space-between;
            padding: 28px 32px;
            background: rgba(255, 204, 0, 0.06);
            border: 1px solid rgba(255, 204, 0, 0.25);
            border-radius: var(--radius-md);
        }

        .trust-item {
            display: flex;
            align-items: center;
            gap: 12px;
        }

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

        .trust-item .trust-label {
            font-size: 0.82rem;
            color: var(--text-secondary);
        }

        .trust-item .trust-value {
            font-size: 1.05rem;
            font-weight: 800;
            color: var(--text-primary);
        }

        /* FAQ */
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 12px;
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 204, 0, 0.15);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            cursor: pointer;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(255, 204, 0, 0.4);
            background: rgba(255, 204, 0, 0.05);
        }

        .faq-question {
            font-weight: 800;
            font-size: 1rem;
            color: var(--text-primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }

        .faq-question i {
            color: var(--accent);
            font-size: 1.1rem;
            transition: var(--transition);
        }

        .faq-answer {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-top: 12px;
            display: none;
        }

        .faq-item.open .faq-answer { display: block; }
        .faq-item.open .faq-question i { transform: rotate(45deg); }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, #FFCC00 0%, #FFB800 50%, #FF9F00 100%);
            padding: 60px 0;
            text-align: center;
        }

        .cta-section h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 900;
            color: #062315;
            margin-bottom: 14px;
        }

        .cta-section p {
            font-size: 1rem;
            color: rgba(6, 35, 21, 0.8);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.65;
        }

        .btn-cta-dark {
            padding: 15px 36px;
            font-size: 1rem;
            font-weight: 800;
            color: #FFFDF0;
            background: #062315;
            border: none;
            border-radius: 999px;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 6px 20px rgba(6, 35, 21, 0.35);
        }

        .btn-cta-dark:hover {
            box-shadow: 0 8px 28px rgba(6, 35, 21, 0.5);
            transform: translateY(-2px);
        }

        /* Footer */
        .site-footer {
            background: #051A10;
            padding: 50px 0 30px;
            border-top: 1px solid rgba(255, 204, 0, 0.15);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 800;
            color: var(--accent);
            margin-bottom: 16px;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .footer-col p, .footer-col a {
            font-size: 0.86rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: block;
            margin-bottom: 6px;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 22px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            align-items: center;
        }

        .footer-bottom p {
            font-size: 0.82rem;
            color: rgba(197, 226, 210, 0.7);
        }

        .footer-badge {
            display: flex;
            gap: 10px;
            align-items: center;
            font-size: 0.78rem;
            color: var(--text-secondary);
        }

        .footer-badge span {
            background: rgba(255, 204, 0, 0.12);
            padding: 6px 12px;
            border-radius: 999px;
            border: 1px solid rgba(255, 204, 0, 0.3);
            font-weight: 700;
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 60;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: #062315;
            border: 2px solid #FFCC00;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--accent);
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(255, 204, 0, 0.35);
            opacity: 0.7;
            transition: var(--transition);
            animation: floatFab 2.5s ease-in-out infinite;
        }

        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 6px 28px rgba(255, 204, 0, 0.55);
        }

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

        .fab-left .fab-notification {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: #FF6B6B;
            border-radius: 50%;
            border: 2px solid #062315;
            animation: pulse 1.5s infinite;
        }

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

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

        /* Responsive */
        @media (max-width: 1024px) {
            .container { padding: 0 20px; }
            .section { padding: 56px 0; }
        }

        @media (max-width: 768px) {
            .nav-links { display: none; }
            .mobile-menu-btn { display: block; }
            .hero-section { padding-top: 110px; padding-bottom: 56px; min-height: 480px; }
            .hero-content h1 { font-size: 1.9rem; }
            .hero-stats { gap: 20px; }
            .trust-bar { flex-direction: column; align-items: flex-start; }
            .section { padding: 48px 0; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .nav-wrapper { min-height: 60px; }
            .nav-logo { font-size: 0.88rem; }
            .nav-cta-group .btn-login { padding: 8px 14px; font-size: 0.78rem; }
            .nav-cta-group .btn-signup { padding: 8px 16px; font-size: 0.78rem; }
            .hero-section { padding-top: 96px; min-height: 440px; }
            .hero-content h1 { font-size: 1.6rem; }
            .hero-desc { font-size: 0.92rem; }
            .hero-actions { flex-direction: column; align-items: stretch; }
            .btn-hero-primary, .btn-hero-secondary { justify-content: center; }
            .hero-stats { gap: 16px; }
            .hero-stat-value { font-size: 1.3rem; }
            .feature-grid { grid-template-columns: 1fr; }
            .recommend-grid { grid-template-columns: 1fr; }
            .cta-section h2 { font-size: 1.5rem; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

/* roulang page: article */
:root {
            --bg-primary: #0A2E1C;
            --bg-secondary: #123E25;
            --bg-card: #0F3A24;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-white: #FFFFFF;
            --text-mint: #D1F2EB;
            --text-muted: #A8C9BC;
            --border-gold: rgba(255, 215, 0, 0.3);
            --border-soft: rgba(255, 255, 255, 0.08);
            --shadow-gold: 0 8px 24px rgba(255, 215, 0, 0.12);
            --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.25);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.6;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

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

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

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

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

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 46, 28, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-gold);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.35rem;
            letter-spacing: -0.01em;
            color: var(--accent-gold);
            white-space: nowrap;
        }

        .logo i {
            font-size: 1.8rem;
            color: var(--accent-gold);
            filter: drop-shadow(0 0 8px rgba(255, 215, 0, 0.4));
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }

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

        .nav-links a:hover {
            background: rgba(255, 215, 0, 0.08);
            color: var(--accent-gold);
        }

        .nav-links a.active {
            background: var(--accent-gold);
            color: var(--bg-primary);
            box-shadow: var(--shadow-gold);
        }

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

        .btn-login {
            padding: 10px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-mint);
            background: transparent;
            border: 1px solid var(--border-soft);
            transition: var(--transition);
            white-space: nowrap;
        }

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

        .btn-signup {
            padding: 10px 22px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--bg-primary);
            background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
            border: none;
            box-shadow: 0 4px 16px rgba(255, 215, 0, 0.3);
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 215, 0, 0.45);
        }

        .btn-signup:active {
            transform: translateY(0) scale(0.98);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border-gold);
            color: var(--accent-gold);
            width: 44px;
            height: 44px;
            border-radius: 12px;
            font-size: 1.3rem;
            cursor: pointer;
            transition: var(--transition);
        }

        .mobile-toggle:hover {
            background: rgba(255, 215, 0, 0.1);
        }

        .article-banner {
            position: relative;
            padding: 60px 0 40px;
            background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
            border-bottom: 1px solid var(--border-gold);
        }

        .article-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at 20% 30%, rgba(255, 215, 0, 0.06) 0%, transparent 50%),
                        radial-gradient(circle at 80% 70%, rgba(211, 47, 47, 0.04) 0%, transparent 50%);
            pointer-events: none;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

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

        .breadcrumb a:hover {
            text-decoration: underline;
        }

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

        .article-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 16px;
        }

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

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

        .article-content-area {
            padding: 48px 0 64px;
        }

        .article-grid {
            display: grid;
            grid-template-columns: minmax(0, 720px) 320px;
            gap: 48px;
            align-items: start;
        }

        .article-body {
            color: var(--text-mint);
            font-size: 1.05rem;
            line-height: 1.7;
        }

        .article-body h2 {
            color: var(--accent-gold);
            font-size: 1.6rem;
            font-weight: 800;
            margin: 32px 0 16px;
            letter-spacing: -0.01em;
        }

        .article-body h3 {
            color: var(--text-white);
            font-size: 1.3rem;
            font-weight: 700;
            margin: 24px 0 12px;
        }

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

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

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

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

        .article-body blockquote {
            border-left: 4px solid var(--accent-gold);
            background: rgba(255, 215, 0, 0.05);
            padding: 16px 20px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 24px 0;
            font-style: italic;
            color: var(--text-white);
        }

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

        .article-body a:hover {
            color: #FFE44D;
        }

        .article-not-found {
            text-align: center;
            padding: 80px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-gold);
        }

        .article-not-found i {
            font-size: 3rem;
            color: var(--accent-gold);
            margin-bottom: 16px;
        }

        .article-not-found h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
        }

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

        .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            background: var(--accent-gold);
            color: var(--bg-primary);
            font-weight: 700;
            font-size: 0.95rem;
            transition: var(--transition);
        }

        .btn-back-home:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-gold);
        }

        .sidebar-widget {
            background: var(--bg-card);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-lg);
            padding: 24px;
            margin-bottom: 24px;
        }

        .sidebar-widget h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border-soft);
        }

        .sidebar-post-list {
            list-style: none;
        }

        .sidebar-post-list li {
            padding: 12px 0;
            border-bottom: 1px solid var(--border-soft);
        }

        .sidebar-post-list li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .sidebar-post-list a {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--text-mint);
            font-size: 0.9rem;
            font-weight: 500;
            line-height: 1.5;
            transition: var(--transition);
        }

        .sidebar-post-list a:hover {
            color: var(--accent-gold);
        }

        .sidebar-post-list .post-thumb {
            width: 64px;
            height: 48px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--bg-secondary);
        }

        .sidebar-post-list .post-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .cta-widget {
            background: linear-gradient(135deg, #1A4D2E 0%, #0F3A24 100%);
            border: 1px solid var(--accent-gold);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

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

        .cta-widget i {
            font-size: 2.5rem;
            color: var(--accent-gold);
            margin-bottom: 16px;
        }

        .cta-widget h3 {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 8px;
        }

        .cta-widget p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 20px;
        }

        .site-footer {
            background: #071E12;
            border-top: 1px solid var(--border-gold);
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 16px;
        }

        .footer-col p, .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 10px;
            transition: var(--transition);
        }

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

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

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

        .footer-badge {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .footer-badge span {
            padding: 6px 14px;
            border-radius: 50px;
            background: rgba(255, 215, 0, 0.1);
            border: 1px solid var(--border-gold);
            color: var(--accent-gold);
            font-size: 0.75rem;
            font-weight: 600;
            white-space: nowrap;
        }

        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: #0A0A0A;
            border: 2px solid var(--accent-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0.7;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            animation: fabFloat 3s ease-in-out infinite;
        }

        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 8px 32px rgba(255, 215, 0, 0.5);
        }

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

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

        .fab-left .notification-dot {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 14px;
            height: 14px;
            background: #D32F2F;
            border-radius: 50%;
            border: 2px solid #0A0A0A;
            animation: dotBlink 1.5s ease-in-out infinite;
        }

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

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

        @media (max-width: 1024px) {
            .article-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .sidebar-widget, .cta-widget {
                margin-bottom: 0;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(10, 46, 28, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-gold);
            }
            .nav-links.mobile-open {
                display: flex;
            }
            .nav-links a {
                padding: 14px 18px;
                border-radius: var(--radius-sm);
                width: 100%;
            }
            .mobile-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .header-actions {
                margin-left: auto;
            }
            .btn-login {
                display: none;
            }
            .btn-signup {
                padding: 10px 18px;
                font-size: 0.85rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .article-banner {
                padding: 40px 0 28px;
            }
            .article-content-area {
                padding: 32px 0 48px;
            }
            .article-body {
                font-size: 1rem;
            }
            .article-body h2 {
                font-size: 1.35rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .logo {
                font-size: 1.1rem;
            }
            .logo i {
                font-size: 1.4rem;
            }
            .btn-signup {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
            .mobile-toggle {
                width: 40px;
                height: 40px;
                font-size: 1.1rem;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .fab-left {
                width: 48px;
                height: 48px;
                left: 12px;
                bottom: 80px;
            }
            .fab-left i {
                font-size: 1.3rem;
            }
            .article-meta {
                gap: 10px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #061f13;
            --bg-secondary: #0a2e1c;
            --bg-card: #0f3d30;
            --accent-gold: #ffd700;
            --accent-red: #d32f2f;
            --accent-coral: #ff6b6b;
            --text-primary: #ffffff;
            --text-secondary: #d1f2eb;
            --text-muted: #7cc9b8;
            --border-gold: rgba(255, 215, 0, 0.45);
            --border-green: rgba(42, 140, 112, 0.35);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 18px 44px rgba(0, 0, 0, 0.5);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-body: '"Be Vietnam Pro"', 'Segoe UI', system-ui, -apple-system, sans-serif;
        }

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

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

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

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

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

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

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

        /* Container */
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            background: rgba(6, 31, 19, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 215, 0, 0.18);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--accent-gold);
            letter-spacing: -0.02em;
            flex-shrink: 0;
            max-width: 340px;
            line-height: 1.2;
        }

        .logo i {
            font-size: 1.6rem;
            color: var(--accent-gold);
            filter: drop-shadow(0 0 8px rgba(255, 215, 0, 0.5));
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            flex-wrap: wrap;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 10px 16px;
            font-weight: 600;
            font-size: 0.92rem;
            color: var(--text-secondary);
            border-radius: 50px;
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }

        .nav-links a:hover {
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.08);
        }

        .nav-links a.active {
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.15);
            box-shadow: inset 0 0 0 1px rgba(255, 215, 0, 0.3);
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            background: var(--accent-gold);
            border-radius: 3px;
        }

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

        .btn-login {
            padding: 10px 18px;
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--text-primary);
            background: transparent;
            border: none;
            border-radius: 50px;
            cursor: pointer;
            transition: all var(--transition);
        }

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

        .btn-signup {
            padding: 10px 22px;
            font-weight: 700;
            font-size: 0.9rem;
            color: #1a1a1a;
            background: linear-gradient(135deg, #ffd700, #ffb700);
            border: none;
            border-radius: 50px;
            cursor: pointer;
            box-shadow: 0 4px 14px rgba(255, 215, 0, 0.35);
            transition: all var(--transition);
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 215, 0, 0.5);
        }

        .btn-signup:active {
            transform: translateY(0);
        }

        /* Mobile nav toggle */
        .mobile-toggle {
            display: none;
            background: transparent;
            border: 1px solid rgba(255, 215, 0, 0.35);
            color: var(--accent-gold);
            width: 44px;
            height: 44px;
            border-radius: 12px;
            cursor: pointer;
            font-size: 1.3rem;
            transition: all var(--transition);
        }

        .mobile-toggle:hover {
            background: rgba(255, 215, 0, 0.1);
        }

        /* Hero Section */
        .hero-section {
            padding-top: 110px;
            padding-bottom: 70px;
            background: linear-gradient(160deg, rgba(6,31,19,0.95) 0%, rgba(10,46,28,0.9) 50%, rgba(6,31,19,0.98) 100%);
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            opacity: 0.22;
            z-index: 0;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, rgba(6,31,19,0.7) 0%, rgba(6,31,19,0.88) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            background: rgba(255, 215, 0, 0.12);
            border: 1px solid rgba(255, 215, 0, 0.35);
            border-radius: 50px;
            color: var(--accent-gold);
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.02em;
            margin-bottom: 22px;
        }

        .hero-text h1 {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.18;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
            color: var(--text-primary);
        }

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

        .hero-text .hero-desc {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 540px;
        }

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 32px;
            font-weight: 800;
            font-size: 1rem;
            color: #1a1a1a;
            background: linear-gradient(135deg, #ffd700, #ffb700);
            border: none;
            border-radius: 50px;
            cursor: pointer;
            box-shadow: 0 8px 28px rgba(255, 215, 0, 0.4);
            transition: all var(--transition);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 36px rgba(255, 215, 0, 0.55);
        }

        .btn-primary:active {
            transform: translateY(-1px);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 28px;
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 50px;
            cursor: pointer;
            transition: all var(--transition);
            backdrop-filter: blur(10px);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.4);
            transform: translateY(-2px);
        }

        .hero-visual {
            position: relative;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .hero-image-wrap {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
            border: 2px solid rgba(255, 215, 0, 0.25);
        }

        .hero-image-wrap img {
            width: 100%;
            height: 420px;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .hero-image-wrap:hover img {
            transform: scale(1.04);
        }

        .hero-stats-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 14px;
        }

        .hero-stat {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-md);
            padding: 18px 16px;
            text-align: left;
            transition: all var(--transition);
        }

        .hero-stat:hover {
            border-color: rgba(255, 215, 0, 0.4);
            background: rgba(255, 215, 0, 0.06);
        }

        .hero-stat .stat-value {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1.2;
        }

        .hero-stat .stat-label {
            font-size: 0.82rem;
            color: var(--text-muted);
            font-weight: 600;
            margin-top: 4px;
        }

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

        .section-dark {
            background: var(--bg-primary);
        }

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

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

        .section-header h2 {
            font-size: 2.3rem;
            font-weight: 800;
            letter-spacing: -0.015em;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .section-header .section-sub {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.65;
            max-width: 680px;
        }

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

        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-green);
            border-radius: var(--radius-md);
            padding: 26px 22px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .step-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent-gold), #ffb700);
            opacity: 0;
            transition: opacity var(--transition);
        }

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

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

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(255, 215, 0, 0.15);
            border: 2px solid rgba(255, 215, 0, 0.5);
            color: var(--accent-gold);
            font-weight: 800;
            font-size: 1.2rem;
            margin-bottom: 16px;
        }

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

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

        /* Features */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

        .feature-card {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: all var(--transition);
        }

        .feature-card:hover {
            border-color: rgba(255, 215, 0, 0.35);
            background: rgba(255, 215, 0, 0.04);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 18px;
            background: rgba(255, 215, 0, 0.12);
            color: var(--accent-gold);
            border: 1px solid rgba(255, 215, 0, 0.3);
        }

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

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

        /* Tips */
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 22px;
        }

        .tip-item {
            display: flex;
            gap: 16px;
            padding: 22px 20px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            transition: all var(--transition);
            align-items: flex-start;
        }

        .tip-item:hover {
            border-color: rgba(255, 215, 0, 0.35);
            background: rgba(255, 215, 0, 0.04);
            transform: translateX(4px);
        }

        .tip-icon {
            flex-shrink: 0;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: rgba(255, 215, 0, 0.12);
            border: 1px solid rgba(255, 215, 0, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-gold);
            font-size: 1.1rem;
        }

        .tip-item h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

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

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 820px;
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 20px 22px;
            transition: all var(--transition);
            cursor: pointer;
        }

        .faq-item:hover {
            border-color: rgba(255, 215, 0, 0.35);
            background: rgba(255, 215, 0, 0.04);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-weight: 700;
            font-size: 1.02rem;
            color: var(--text-primary);
        }

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

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

        .faq-answer {
            margin-top: 12px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }

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

        /* CTA */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(150deg, rgba(6,31,19,0.97) 0%, rgba(15,61,48,0.95) 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }

        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .cta-content h2 {
            font-size: 2.5rem;
            font-weight: 800;
            letter-spacing: -0.015em;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .cta-content p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

        /* Footer */
        .site-footer {
            background: #040f09;
            border-top: 1px solid rgba(255, 215, 0, 0.2);
            padding: 50px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .footer-col p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 8px;
        }

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

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding-top: 22px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            flex-wrap: wrap;
        }

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

        .footer-badge {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .footer-badge span {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 700;
            color: var(--text-primary);
            background: rgba(255, 215, 0, 0.08);
            border: 1px solid rgba(255, 215, 0, 0.3);
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 20px;
            bottom: 96px;
            z-index: 60;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, #0a2e1c, #061f13);
            border: 3px solid var(--accent-gold);
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0.75;
            transition: all var(--transition);
            animation: fabFloat 3s ease-in-out infinite;
        }

        .fab i {
            font-size: 1.4rem;
            color: var(--accent-gold);
            transition: transform 0.4s ease;
        }

        .fab::after {
            content: '';
            position: absolute;
            top: -3px;
            right: -3px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: #ff1744;
            border: 2px solid #061f13;
            animation: fabBlink 1.5s ease-in-out infinite;
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.12);
            box-shadow: 0 8px 32px rgba(255, 215, 0, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.2);
        }

        .fab:hover i {
            transform: rotate(360deg);
        }

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

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

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

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-content {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-image-wrap img {
                height: 320px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }
            .logo {
                font-size: 1.1rem;
                max-width: 260px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                flex-direction: column;
                background: rgba(6, 31, 19, 0.98);
                padding: 16px 20px;
                border-bottom: 1px solid rgba(255, 215, 0, 0.25);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
                gap: 4px;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 16px;
                border-radius: 10px;
            }
            .nav-links a.active::after {
                display: none;
            }
            .mobile-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .nav-actions .btn-login {
                display: none;
            }
            .btn-signup {
                padding: 8px 16px;
                font-size: 0.82rem;
            }
            .hero-section {
                padding-top: 90px;
                padding-bottom: 50px;
            }
            .hero-text h1 {
                font-size: 2.2rem;
            }
            .hero-text .hero-desc {
                font-size: 1rem;
            }
            .hero-image-wrap img {
                height: 240px;
            }
            .hero-stats-row {
                grid-template-columns: repeat(3, 1fr);
                gap: 10px;
            }
            .hero-stat .stat-value {
                font-size: 1.3rem;
            }
            .section {
                padding: 50px 0;
            }
            .section-header h2 {
                font-size: 1.8rem;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .tips-grid {
                grid-template-columns: 1fr;
            }
            .cta-content h2 {
                font-size: 1.9rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .fab {
                left: 14px;
                bottom: 80px;
                width: 50px;
                height: 50px;
            }
            .fab i {
                font-size: 1.2rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .header-inner {
                height: 60px;
            }
            .logo {
                font-size: 0.95rem;
                max-width: 210px;
            }
            .logo i {
                font-size: 1.2rem;
            }
            .btn-signup {
                padding: 7px 12px;
                font-size: 0.75rem;
            }
            .nav-links {
                top: 60px;
            }
            .hero-text h1 {
                font-size: 1.8rem;
            }
            .hero-cta-group {
                flex-direction: column;
                align-items: stretch;
            }
            .btn-primary, .btn-secondary {
                justify-content: center;
                width: 100%;
            }
            .hero-image-wrap img {
                height: 200px;
            }
            .hero-stats-row {
                grid-template-columns: 1fr;
            }
            .section-header h2 {
                font-size: 1.55rem;
            }
            .step-card, .feature-card, .tip-item, .faq-item {
                padding: 18px 16px;
            }
            .cta-content h2 {
                font-size: 1.6rem;
            }
            .cta-content p {
                font-size: 0.95rem;
            }
            .footer-badge span {
                padding: 5px 10px;
                font-size: 0.7rem;
            }
        }

/* roulang page: category2 */
:root {
            --primary-deep: #0A2E1C;
            --primary-forest: #123E25;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-white: #FFFFFF;
            --text-mint: #D1F2EB;
            --bg-light: #F8FAFC;
            --text-dark: #1E293B;
            --text-gray: #475569;
            --border-light: #E2E8F0;
            --shadow-soft: 0 8px 30px rgba(0,0,0,0.08);
            --shadow-gold: 0 8px 25px rgba(255,215,0,0.25);
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-sm: 10px;
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            line-height: 1.6;
            background: var(--bg-light);
            color: var(--text-dark);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: inherit;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        /* Header / Nav */
        .site-header {
            background: var(--primary-deep);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0,0,0,0.3);
            border-bottom: 2px solid rgba(255,215,0,0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }
        .logo {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--accent-gold);
            letter-spacing: -0.5px;
            white-space: nowrap;
            line-height: 1.2;
        }
        .logo span {
            display: block;
            font-size: 0.7rem;
            font-weight: 500;
            color: var(--text-mint);
            letter-spacing: 0.5px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            flex-wrap: wrap;
        }
        .nav-links a {
            color: var(--text-mint);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 8px 4px;
            position: relative;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: var(--accent-gold);
        }
        .nav-links a.active {
            color: var(--accent-gold);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--accent-gold);
            border-radius: 2px;
        }
        .nav-auth {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .btn-login {
            color: var(--text-mint);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 8px 16px;
            border: 1px solid rgba(209,242,235,0.4);
            border-radius: 20px;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-login:hover {
            border-color: var(--accent-gold);
            color: var(--accent-gold);
        }
        .btn-signup {
            background: var(--accent-gold);
            color: var(--primary-deep);
            font-weight: 700;
            font-size: 0.9rem;
            padding: 8px 20px;
            border-radius: 20px;
            box-shadow: var(--shadow-gold);
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-signup:hover {
            background: #FFE44D;
            transform: translateY(-1px);
            box-shadow: 0 12px 30px rgba(255,215,0,0.4);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--accent-gold);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px;
        }
        /* Hero */
        .hero {
            background: linear-gradient(135deg, var(--primary-deep) 0%, var(--primary-forest) 50%, #0A1E14 100%);
            padding: 70px 0 80px;
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255,215,0,0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-inner {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 50px;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .hero-tag {
            display: inline-block;
            background: rgba(255,215,0,0.15);
            color: var(--accent-gold);
            padding: 6px 16px;
            border-radius: 20px;
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
            border: 1px solid rgba(255,215,0,0.4);
        }
        .hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: -1px;
        }
        .hero h1 em {
            color: var(--accent-gold);
            font-style: normal;
        }
        .hero-sub {
            font-size: 1.15rem;
            color: var(--text-mint);
            line-height: 1.7;
            margin-bottom: 30px;
            max-width: 520px;
        }
        .hero-stats {
            display: flex;
            gap: 30px;
            margin-bottom: 30px;
            flex-wrap: wrap;
        }
        .hero-stat {
            text-align: left;
        }
        .hero-stat strong {
            display: block;
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-gold);
        }
        .hero-stat span {
            font-size: 0.85rem;
            color: var(--text-mint);
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-primary {
            background: var(--accent-gold);
            color: var(--primary-deep);
            font-weight: 700;
            padding: 14px 32px;
            border-radius: 30px;
            font-size: 1rem;
            box-shadow: var(--shadow-gold);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn-primary:hover {
            background: #FFE44D;
            transform: translateY(-2px);
            box-shadow: 0 15px 35px rgba(255,215,0,0.45);
        }
        .btn-outline-light {
            border: 2px solid rgba(209,242,235,0.5);
            color: var(--text-mint);
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 30px;
            font-size: 1rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn-outline-light:hover {
            border-color: var(--accent-gold);
            color: var(--accent-gold);
            background: rgba(255,215,0,0.1);
        }
        .hero-visual {
            background: rgba(255,255,255,0.05);
            border-radius: var(--radius-lg);
            padding: 30px;
            border: 1px solid rgba(255,215,0,0.2);
            backdrop-filter: blur(10px);
        }
        .hero-visual img {
            border-radius: var(--radius-md);
            width: 100%;
            height: 320px;
            object-fit: cover;
            box-shadow: 0 20px 40px rgba(0,0,0,0.3);
        }
        .hero-visual-badge {
            display: flex;
            gap: 12px;
            margin-top: 20px;
            flex-wrap: wrap;
        }
        .hero-visual-badge span {
            background: rgba(255,215,0,0.1);
            color: var(--accent-gold);
            padding: 6px 14px;
            border-radius: 16px;
            font-size: 0.8rem;
            font-weight: 600;
            border: 1px solid rgba(255,215,0,0.3);
        }
        /* Section General */
        .section {
            padding: 70px 0;
        }
        .section-light {
            background: #FFFFFF;
        }
        .section-mint {
            background: #F0FDF4;
        }
        .section-deep {
            background: var(--primary-deep);
            color: var(--text-white);
        }
        .section-header {
            margin-bottom: 40px;
            text-align: left;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-deep .section-header h2 {
            color: var(--text-white);
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-gray);
            max-width: 700px;
            line-height: 1.7;
        }
        .section-deep .section-header p {
            color: var(--text-mint);
        }
        /* Strategy Cards */
        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .strategy-card {
            background: #FFFFFF;
            border-radius: var(--radius-md);
            padding: 30px 24px;
            box-shadow: var(--shadow-soft);
            border-left: 4px solid var(--accent-gold);
            transition: var(--transition);
        }
        .strategy-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.12);
        }
        .strategy-icon {
            width: 50px;
            height: 50px;
            background: rgba(255,215,0,0.15);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-red);
            font-size: 1.5rem;
            margin-bottom: 18px;
        }
        .strategy-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
        }
        .strategy-card p {
            font-size: 0.95rem;
            color: var(--text-gray);
            line-height: 1.7;
        }
        /* Steps Timeline */
        .steps-flow {
            display: flex;
            flex-direction: column;
            gap: 20px;
            max-width: 800px;
        }
        .step-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            background: #FFFFFF;
            padding: 22px 24px;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-soft);
            transition: var(--transition);
        }
        .step-item:hover {
            box-shadow: 0 15px 35px rgba(0,0,0,0.1);
        }
        .step-num {
            flex-shrink: 0;
            width: 42px;
            height: 42px;
            background: var(--primary-deep);
            color: var(--accent-gold);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
        }
        .step-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 0.95rem;
            color: var(--text-gray);
            line-height: 1.7;
        }
        /* Weapon Grid */
        .weapon-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .weapon-card {
            display: flex;
            gap: 20px;
            background: #FFFFFF;
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-soft);
            transition: var(--transition);
            align-items: center;
        }
        .weapon-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 18px 35px rgba(0,0,0,0.12);
        }
        .weapon-card img {
            width: 100px;
            height: 100px;
            border-radius: 12px;
            object-fit: cover;
            flex-shrink: 0;
        }
        .weapon-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .weapon-card p {
            font-size: 0.9rem;
            color: var(--text-gray);
            line-height: 1.6;
        }
        /* FAQ */
        .faq-list {
            max-width: 800px;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: #FFFFFF;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-soft);
            overflow: hidden;
            border: 1px solid var(--border-light);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            background: none;
            border: none;
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--accent-red);
        }
        .faq-question i {
            transition: transform 0.3s ease;
            color: var(--accent-gold);
        }
        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.95rem;
            color: var(--text-gray);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        /* CTA Section */
        .cta-banner {
            background: linear-gradient(135deg, var(--primary-deep) 0%, #0D3B25 100%);
            border-radius: var(--radius-lg);
            padding: 50px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-banner::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255,215,0,0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-banner h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            position: relative;
            z-index: 2;
        }
        .cta-banner p {
            font-size: 1.1rem;
            color: var(--text-mint);
            max-width: 600px;
            margin: 0 auto 28px;
            line-height: 1.7;
            position: relative;
            z-index: 2;
        }
        .cta-banner .btn-primary {
            position: relative;
            z-index: 2;
        }
        /* Footer */
        .site-footer {
            background: var(--primary-deep);
            color: var(--text-mint);
            padding: 60px 0 30px;
            border-top: 3px solid var(--accent-gold);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col h4 {
            color: var(--accent-gold);
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-col p, .footer-col a {
            font-size: 0.9rem;
            color: var(--text-mint);
            line-height: 1.8;
            display: block;
            margin-bottom: 6px;
        }
        .footer-col a:hover {
            color: var(--accent-gold);
        }
        .footer-bottom {
            border-top: 1px solid rgba(209,242,235,0.2);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-bottom p {
            font-size: 0.85rem;
        }
        .footer-badge {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .footer-badge span {
            background: rgba(255,215,0,0.15);
            color: var(--accent-gold);
            padding: 5px 14px;
            border-radius: 16px;
            font-size: 0.8rem;
            font-weight: 600;
            border: 1px solid rgba(255,215,0,0.4);
        }
        /* FAB */
        .fab-support {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 90;
            width: 56px;
            height: 56px;
            background: var(--primary-deep);
            border-radius: 50%;
            border: 3px solid var(--accent-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-gold);
            font-size: 1.4rem;
            box-shadow: 0 4px 20px rgba(255,215,0,0.35);
            cursor: pointer;
            transition: var(--transition);
            opacity: 0.75;
            animation: fabFloat 3s ease-in-out infinite;
        }
        .fab-support:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 8px 30px rgba(255,215,0,0.55);
        }
        .fab-support:active {
            transform: scale(0.95);
        }
        .fab-notify {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: #FF0033;
            border-radius: 50%;
            border: 2px solid var(--primary-deep);
            animation: fabBlink 1.5s ease-in-out infinite;
        }
        @keyframes fabFloat {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
        }
        @keyframes fabBlink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 35px;
            }
            .hero h1 {
                font-size: 2.4rem;
            }
            .strategy-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .weapon-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                height: auto;
                flex-wrap: wrap;
                padding: 12px 0;
                gap: 10px;
            }
            .logo {
                font-size: 1.05rem;
            }
            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 4px;
                background: var(--primary-forest);
                padding: 16px;
                border-radius: var(--radius-sm);
                order: 3;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-auth {
                margin-left: auto;
            }
            .mobile-toggle {
                display: block;
            }
            .btn-login, .btn-signup {
                font-size: 0.8rem;
                padding: 6px 14px;
            }
            .hero {
                padding: 40px 0 50px;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero-sub {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 18px;
            }
            .hero-stat strong {
                font-size: 1.5rem;
            }
            .section {
                padding: 45px 0;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .strategy-grid {
                grid-template-columns: 1fr;
            }
            .step-item {
                flex-direction: column;
                gap: 12px;
            }
            .weapon-card {
                flex-direction: column;
                text-align: center;
            }
            .weapon-card img {
                width: 100%;
                height: 160px;
            }
            .cta-banner {
                padding: 35px 20px;
            }
            .cta-banner h2 {
                font-size: 1.6rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 25px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .fab-support {
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
                left: 12px;
                bottom: 80px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .hero h1 {
                font-size: 1.7rem;
            }
            .hero-visual img {
                height: 200px;
            }
            .btn-primary, .btn-outline-light {
                padding: 12px 20px;
                font-size: 0.9rem;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
        }

/* roulang page: category3 */
:root {
            --primary-bg: #F8FAFC;
            --secondary-bg: #EFF4F8;
            --card-bg: #FFFFFF;
            --primary-blue: #1E4E8C;
            --secondary-blue: #3A7BD5;
            --accent-gold: #F5A623;
            --text-dark: #0F172A;
            --text-mid: #334155;
            --text-light: #64748B;
            --border-light: #E2E8F0;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
            --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.08), 0 2px 4px rgba(15, 23, 42, 0.04);
            --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12), 0 4px 8px rgba(15, 23, 42, 0.06);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--primary-bg);
            color: var(--text-dark);
            line-height: 1.6;
            font-size: 16px;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header / Nav */
        .site-header {
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }
        .logo {
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--primary-blue);
            white-space: nowrap;
            letter-spacing: -0.02em;
        }
        .logo i {
            color: var(--accent-gold);
            margin-right: 6px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            flex-wrap: wrap;
        }
        .nav-links a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.92rem;
            color: var(--text-mid);
            transition: all 0.2s ease;
            white-space: nowrap;
        }
        .nav-links a:hover {
            background: var(--secondary-bg);
            color: var(--primary-blue);
        }
        .nav-links a.active {
            background: var(--primary-blue);
            color: #fff;
            box-shadow: var(--shadow-sm);
        }
        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .btn-login {
            padding: 8px 16px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--primary-blue);
            border: 1.5px solid var(--primary-blue);
            background: transparent;
            transition: all 0.2s ease;
            white-space: nowrap;
        }
        .btn-login:hover {
            background: #EAF1FA;
        }
        .btn-signup {
            padding: 8px 20px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 0.9rem;
            background: var(--primary-blue);
            color: #fff;
            box-shadow: var(--shadow-sm);
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .btn-signup:hover {
            background: var(--secondary-blue);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }
        .mobile-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text-dark);
        }

        /* Hero */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, #0B1E3F 0%, #1E4E8C 50%, #3A7BD5 100%);
            color: #fff;
            padding: 80px 0 100px;
            overflow: hidden;
            border-radius: 0 0 var(--radius-xl) var(--radius-xl);
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -120px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(245,166,35,0.25) 0%, transparent 70%);
            border-radius: 50%;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -80px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(58,123,213,0.3) 0%, transparent 70%);
            border-radius: 50%;
        }
        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 48px;
            align-items: center;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,255,255,0.12);
            border: 1px solid rgba(255,255,255,0.25);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 20px;
            backdrop-filter: blur(8px);
        }
        .hero-badge i {
            color: var(--accent-gold);
        }
        .hero-section h1 {
            font-size: 3.2rem;
            line-height: 1.2;
            font-weight: 900;
            letter-spacing: -0.03em;
            margin-bottom: 20px;
        }
        .hero-section h1 span {
            color: var(--accent-gold);
        }
        .hero-section .hero-sub {
            font-size: 1.15rem;
            color: #E2E8F0;
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 560px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .btn-primary-hero {
            padding: 14px 32px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 1.05rem;
            background: var(--accent-gold);
            color: #0F172A;
            box-shadow: 0 8px 24px rgba(245,166,35,0.35);
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn-primary-hero:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(245,166,35,0.5);
        }
        .btn-outline-hero {
            padding: 14px 28px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 1.05rem;
            background: rgba(255,255,255,0.1);
            border: 1.5px solid rgba(255,255,255,0.4);
            color: #fff;
            backdrop-filter: blur(8px);
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn-outline-hero:hover {
            background: rgba(255,255,255,0.2);
        }
        .hero-panel {
            background: rgba(255,255,255,0.08);
            backdrop-filter: blur(16px);
            border: 1px solid rgba(255,255,255,0.2);
            border-radius: var(--radius-lg);
            padding: 32px;
        }
        .hero-panel h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--accent-gold);
        }
        .hero-panel ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .hero-panel li {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.98rem;
            color: #E2E8F0;
        }
        .hero-panel li i {
            color: var(--accent-gold);
            width: 20px;
            text-align: center;
        }

        /* Section Titles */
        .section {
            padding: 72px 0;
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-tag {
            display: inline-block;
            background: #EAF1FA;
            color: var(--primary-blue);
            font-weight: 700;
            font-size: 0.8rem;
            padding: 4px 14px;
            border-radius: 999px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-dark);
            line-height: 1.25;
            margin-bottom: 12px;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 720px;
            line-height: 1.7;
        }

        /* Notes Grid */
        .notes-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }
        .note-card {
            background: var(--card-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
        }
        .note-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: #CBD5E1;
        }
        .note-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: #EAF1FA;
            color: var(--primary-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 16px;
        }
        .note-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-dark);
        }
        .note-card p {
            font-size: 0.95rem;
            color: var(--text-mid);
            line-height: 1.65;
        }

        /* Step Process */
        .step-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .step-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            background: var(--card-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
        }
        .step-item:hover {
            box-shadow: var(--shadow-md);
        }
        .step-number {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-blue);
            color: #fff;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
        }
        .step-content h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .step-content p {
            font-size: 0.95rem;
            color: var(--text-mid);
            line-height: 1.65;
        }

        /* Image Banner */
        .image-banner {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            margin: 40px 0;
        }
        .image-banner img {
            width: 100%;
            height: 360px;
            object-fit: cover;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .faq-question i {
            color: var(--accent-gold);
        }
        .faq-answer {
            font-size: 0.95rem;
            color: var(--text-mid);
            line-height: 1.7;
            padding-left: 26px;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, #0B1E3F 0%, #1E4E8C 100%);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            margin-top: 48px;
        }
        .cta-section h3 {
            font-size: 1.9rem;
            font-weight: 800;
            margin-bottom: 8px;
        }
        .cta-section p {
            color: #CBD5E1;
            font-size: 1.05rem;
        }
        .btn-cta-gold {
            padding: 14px 32px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 1.05rem;
            background: var(--accent-gold);
            color: #0F172A;
            box-shadow: 0 8px 24px rgba(245,166,35,0.35);
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }
        .btn-cta-gold:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(245,166,35,0.5);
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 90;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary-blue);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: 0 4px 20px rgba(30, 78, 140, 0.35);
            transition: all 0.3s ease;
            cursor: pointer;
            border: 2px solid var(--accent-gold);
            animation: fabBreath 2.5s ease-in-out infinite;
        }
        .fab-left:hover {
            transform: scale(1.1);
            background: var(--secondary-blue);
        }
        .fab-left .notification-dot {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: #E53E3E;
            border: 2px solid #fff;
            animation: dotBlink 1.5s ease-in-out infinite;
        }
        @keyframes fabBreath {
            0%, 100% { transform: scale(1); opacity: 0.85; }
            50% { transform: scale(1.05); opacity: 1; }
        }
        @keyframes dotBlink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        /* Footer */
        .site-footer {
            background: #0F172A;
            color: #CBD5E1;
            padding: 64px 0 24px;
            margin-top: 48px;
            border-radius: var(--radius-xl) var(--radius-xl) 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-col p, .footer-col a {
            font-size: 0.92rem;
            color: #94A3B8;
            line-height: 1.7;
            display: block;
            margin-bottom: 8px;
        }
        .footer-col a:hover {
            color: var(--accent-gold);
        }
        .footer-bottom {
            border-top: 1px solid #1E293B;
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        .footer-bottom p {
            font-size: 0.85rem;
            color: #64748B;
        }
        .footer-badge {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .footer-badge span {
            background: #1E293B;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 600;
            color: #CBD5E1;
            border: 1px solid #334155;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-section h1 {
                font-size: 2.6rem;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                height: auto;
                min-height: 60px;
                flex-wrap: wrap;
                padding: 10px 0;
            }
            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding: 8px 0;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 12px 16px;
                border-radius: 8px;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-cta-group {
                margin-left: auto;
            }
            .hero-section {
                padding: 48px 0 72px;
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            }
            .hero-section h1 {
                font-size: 2rem;
            }
            .section {
                padding: 48px 0;
            }
            .section-header h2 {
                font-size: 1.7rem;
            }
            .notes-grid {
                grid-template-columns: 1fr;
            }
            .cta-section {
                padding: 32px 24px;
                flex-direction: column;
                text-align: left;
            }
            .image-banner img {
                height: 240px;
            }
            .fab-left {
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
                left: 12px;
                bottom: 80px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .logo {
                font-size: 1rem;
            }
            .btn-login, .btn-signup {
                padding: 6px 12px;
                font-size: 0.8rem;
            }
            .hero-section h1 {
                font-size: 1.7rem;
            }
            .hero-section .hero-sub {
                font-size: 1rem;
            }
            .btn-primary-hero, .btn-outline-hero {
                padding: 12px 20px;
                font-size: 0.95rem;
            }
            .hero-panel {
                padding: 20px;
            }
            .step-item {
                flex-direction: column;
                gap: 12px;
            }
            .step-number {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }
        }