/* roulang page: index */
:root {
            --primary: #0F4C81;
            --primary-light: #1E6BA8;
            --primary-dark: #0A355C;
            --accent: #F5A623;
            --accent-soft: #FFF4E5;
            --success: #2E9E6B;
            --danger: #D94A4A;
            --bg: #F5F8FC;
            --surface: #FFFFFF;
            --surface-soft: #EDF3F9;
            --text: #1A2B3C;
            --text-secondary: #4A5E70;
            --text-muted: #7A8EA0;
            --border: #D9E2EC;
            --shadow-sm: 0 1px 3px rgba(10, 53, 92, 0.06), 0 1px 2px rgba(10, 53, 92, 0.04);
            --shadow-md: 0 4px 12px rgba(10, 53, 92, 0.08), 0 2px 4px rgba(10, 53, 92, 0.04);
            --shadow-lg: 0 12px 32px rgba(10, 53, 92, 0.12), 0 4px 8px rgba(10, 53, 92, 0.06);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-sans: 'Inter', 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
            --spacing-1: 4px;
            --spacing-2: 8px;
            --spacing-3: 12px;
            --spacing-4: 16px;
            --spacing-5: 24px;
            --spacing-6: 32px;
            --spacing-7: 48px;
            --spacing-8: 64px;
            --spacing-9: 96px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

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

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--spacing-5);
        }

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

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            gap: var(--spacing-4);
        }

        .logo {
            display: flex;
            align-items: center;
            gap: var(--spacing-3);
            font-weight: 800;
            font-size: 1.15rem;
            color: var(--primary-dark);
            letter-spacing: -0.01em;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.3rem;
            flex-shrink: 0;
            box-shadow: var(--shadow-sm);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: var(--spacing-2);
            flex: 1;
            justify-content: center;
        }

        .main-nav a {
            padding: var(--spacing-2) var(--spacing-4);
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }

        .main-nav a:hover {
            color: var(--primary);
            background: var(--surface-soft);
        }

        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 2px;
            background: var(--accent);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-3);
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: var(--spacing-2);
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.92rem;
            transition: all var(--transition);
            white-space: nowrap;
            line-height: 1.2;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-sm);
        }

        .btn-primary:hover {
            background: var(--primary-light);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
            color: #fff;
        }

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

        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: var(--shadow-sm);
        }

        .btn-accent:hover {
            background: #e8960e;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
            color: #fff;
        }

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

        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
        }

        .btn-lg {
            padding: 14px 28px;
            font-size: 1rem;
            border-radius: var(--radius-md);
        }

        .btn-sm {
            padding: 7px 14px;
            font-size: 0.85rem;
        }

        .btn-text {
            padding: 8px 12px;
            font-weight: 500;
            color: var(--text-secondary);
            font-size: 0.92rem;
        }

        .btn-text:hover {
            color: var(--primary);
            background: var(--surface-soft);
        }

        .mobile-menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            background: var(--surface-soft);
        }

        .mobile-menu-toggle span {
            display: block;
            width: 22px;
            height: 2.5px;
            border-radius: 2px;
            background: var(--text);
            transition: all var(--transition);
        }

        .mobile-menu-toggle.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

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

        .mobile-menu-toggle.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* Mobile nav */
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: var(--surface);
            border-top: 1px solid var(--border);
            padding: var(--spacing-3) var(--spacing-5);
            gap: var(--spacing-2);
        }

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

        .mobile-nav a {
            padding: var(--spacing-3);
            border-radius: var(--radius-sm);
            font-weight: 500;
            color: var(--text-secondary);
        }

        .mobile-nav a:hover {
            background: var(--surface-soft);
            color: var(--primary);
        }

        .mobile-nav a.active {
            background: var(--surface-soft);
            color: var(--primary);
            font-weight: 600;
        }

        /* Hero */
        .hero {
            position: relative;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            color: #fff;
            padding: var(--spacing-8) 0 var(--spacing-9);
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -15%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(245, 166, 35, 0.3) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(46, 158, 107, 0.25) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-grid {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-7);
            align-items: center;
        }

        .hero-content {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-5);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-2);
            padding: 8px 16px;
            background: rgba(255, 255, 255, 0.15);
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            color: #FFE0B2;
            width: fit-content;
            backdrop-filter: blur(4px);
        }

        .hero h1 {
            font-size: 2.75rem;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin: 0;
        }

        .hero-description {
            font-size: 1.1rem;
            line-height: 1.65;
            color: rgba(255, 255, 255, 0.88);
            max-width: 520px;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-3);
        }

        .hero-stats {
            display: flex;
            gap: var(--spacing-6);
            flex-wrap: wrap;
            margin-top: var(--spacing-2);
        }

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

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

        .hero-stat-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.75);
        }

        .hero-panel {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: var(--radius-lg);
            padding: var(--spacing-5);
            border: 1px solid rgba(255, 255, 255, 0.2);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-4);
        }

        .hero-panel-title {
            font-size: 1.1rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: var(--spacing-2);
            color: #fff;
        }

        .hero-panel-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-3);
        }

        .hero-panel-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--spacing-3);
            background: rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }

        .hero-panel-item:hover {
            background: rgba(255, 255, 255, 0.14);
        }

        .hero-panel-item-left {
            display: flex;
            align-items: center;
            gap: var(--spacing-3);
        }

        .hero-panel-rank {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--accent);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.85rem;
            flex-shrink: 0;
        }

        .hero-panel-name {
            font-weight: 500;
            font-size: 0.95rem;
        }

        .hero-panel-score {
            font-weight: 700;
            color: var(--accent);
            font-size: 0.9rem;
        }

        /* Section Common */
        .section {
            padding: var(--spacing-8) 0;
        }

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

        .section-header {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-3);
            margin-bottom: var(--spacing-6);
            max-width: 680px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-2);
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--primary);
            background: var(--surface-soft);
            padding: 6px 14px;
            border-radius: 50px;
            width: fit-content;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.01em;
            color: var(--text);
        }

        .section-description {
            font-size: 1.05rem;
            line-height: 1.65;
            color: var(--text-secondary);
        }

        /* Promotion Ladder */
        .promo-ladder {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-4);
        }

        .promo-step {
            display: grid;
            grid-template-columns: 80px 1fr auto;
            gap: var(--spacing-5);
            align-items: center;
            padding: var(--spacing-5);
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .promo-step:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }

        .promo-step-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-soft) 0%, #FFE8C7 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--accent);
            flex-shrink: 0;
        }

        .promo-step-content h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: var(--spacing-2);
            color: var(--text);
        }

        .promo-step-content p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.55;
        }

        .promo-step-tag {
            padding: 8px 16px;
            background: var(--accent-soft);
            color: #B86E00;
            font-weight: 600;
            font-size: 0.85rem;
            border-radius: 50px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        /* Pricing / Package Comparison */
        .package-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-5);
        }

        .package-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: var(--spacing-6);
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-4);
            transition: all var(--transition);
            position: relative;
            box-shadow: var(--shadow-sm);
        }

        .package-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--primary);
        }

        .package-card.featured {
            border: 2px solid var(--accent);
            box-shadow: var(--shadow-md);
            position: relative;
        }

        .package-card.featured::before {
            content: 'PHỔ BIẾN NHẤT';
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            padding: 4px 14px;
            border-radius: 50px;
            white-space: nowrap;
        }

        .package-name {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
        }

        .package-price {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }

        .package-price span {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
        }

        .package-features {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-3);
            flex: 1;
        }

        .package-features li {
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-3);
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        .package-features li::before {
            content: '✓';
            color: var(--success);
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 2px;
        }

        /* Guarantee Bar */
        .guarantee-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-5);
        }

        .guarantee-item {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-3);
            align-items: flex-start;
        }

        .guarantee-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: var(--surface-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--primary);
        }

        .guarantee-item h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
        }

        .guarantee-item p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* News / CMS List */
        .news-layout {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: var(--spacing-6);
        }

        .news-main-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-3);
        }

        .news-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-4);
            padding: var(--spacing-4);
            background: var(--surface);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

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

        .news-item-left {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-1);
            min-width: 0;
        }

        .news-item-title {
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--text);
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
        }

        .news-item-meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-3);
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .news-item-category {
            padding: 3px 10px;
            background: var(--surface-soft);
            border-radius: 50px;
            font-weight: 500;
            color: var(--primary);
            font-size: 0.75rem;
        }

        .news-item-arrow {
            color: var(--text-muted);
            flex-shrink: 0;
            transition: transform var(--transition);
        }

        .news-item:hover .news-item-arrow {
            transform: translateX(4px);
            color: var(--primary);
        }

        .news-sidebar {
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: var(--spacing-5);
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-4);
            height: fit-content;
        }

        .news-sidebar h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
        }

        .news-sidebar-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-3);
        }

        .news-sidebar-item {
            display: flex;
            gap: var(--spacing-3);
            align-items: flex-start;
        }

        .news-sidebar-index {
            font-weight: 800;
            color: var(--accent);
            font-size: 1.1rem;
            flex-shrink: 0;
            min-width: 28px;
        }

        .news-sidebar-text {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.45;
        }

        .no-updates {
            padding: var(--spacing-5);
            background: var(--surface);
            border-radius: var(--radius-sm);
            border: 1px dashed var(--border);
            text-align: center;
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* Entry Matrix */
        .entry-matrix {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-4);
        }

        .entry-card {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-3);
            padding: var(--spacing-5);
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .entry-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .entry-card-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: var(--surface-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
        }

        .entry-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
        }

        .entry-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* Ranking List */
        .ranking-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-2);
        }

        .ranking-item {
            display: grid;
            grid-template-columns: 50px 1fr 80px 100px;
            gap: var(--spacing-3);
            align-items: center;
            padding: var(--spacing-3) var(--spacing-4);
            background: var(--surface);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            font-size: 0.92rem;
            transition: all var(--transition);
        }

        .ranking-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }

        .ranking-item.rank-top {
            border-left: 3px solid var(--accent);
        }

        .ranking-rank {
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--primary);
        }

        .ranking-name {
            font-weight: 500;
            color: var(--text);
        }

        .ranking-stat {
            color: var(--text-secondary);
            font-size: 0.85rem;
            text-align: right;
        }

        .ranking-trend {
            font-weight: 600;
            font-size: 0.85rem;
            text-align: right;
        }

        .trend-up {
            color: var(--success);
        }

        .trend-hot {
            color: var(--danger);
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-3);
            max-width: 800px;
        }

        .faq-item {
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-3);
            padding: var(--spacing-4) var(--spacing-5);
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            transition: color var(--transition);
            background: none;
            width: 100%;
            text-align: left;
        }

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            transition: transform var(--transition);
            font-size: 1.2rem;
            font-weight: 700;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition), padding var(--transition);
            padding: 0 var(--spacing-5);
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 var(--spacing-5) var(--spacing-4);
        }

        /* Floating CTA Bar */
        .floating-cta {
            position: fixed;
            bottom: 24px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 90;
            background: var(--surface);
            border-radius: 50px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border);
            padding: var(--spacing-2) var(--spacing-4);
            display: flex;
            align-items: center;
            gap: var(--spacing-3);
            transition: all var(--transition);
            max-width: calc(100vw - 32px);
        }

        .floating-cta-text {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
        }

        .floating-cta .btn {
            flex-shrink: 0;
        }

        /* Footer */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: var(--spacing-7) 0 var(--spacing-5);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-6);
            margin-bottom: var(--spacing-6);
        }

        .footer-brand {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-3);
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: var(--spacing-3);
            font-weight: 800;
            font-size: 1.2rem;
            color: #fff;
        }

        .footer-logo .logo-icon {
            background: var(--accent);
            color: var(--primary-dark);
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.6;
            color: rgba(255, 255, 255, 0.7);
            max-width: 300px;
        }

        .footer-column h3 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-3);
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-2);
        }

        .footer-links a {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: var(--spacing-5);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--spacing-3);
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }

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

        .footer-payment {
            display: flex;
            align-items: center;
            gap: var(--spacing-3);
        }

        .footer-payment-badge {
            padding: 4px 10px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.1);
            font-size: 0.8rem;
            font-weight: 600;
            color: #fff;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-6);
            }

            .hero h1 {
                font-size: 2.2rem;
            }

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

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

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

            .news-layout {
                grid-template-columns: 1fr;
            }

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

        @media (max-width: 768px) {
            .container {
                padding: 0 var(--spacing-4);
            }

            .main-nav {
                display: none;
            }

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

            .header-actions .btn-text {
                display: none;
            }

            .header-actions .btn-primary {
                padding: 8px 14px;
                font-size: 0.85rem;
            }

            .hero {
                padding: var(--spacing-6) 0 var(--spacing-7);
            }

            .hero h1 {
                font-size: 1.8rem;
            }

            .hero-description {
                font-size: 1rem;
            }

            .hero-stats {
                gap: var(--spacing-4);
            }

            .hero-stat-value {
                font-size: 1.3rem;
            }

            .section {
                padding: var(--spacing-6) 0;
            }

            .section-title {
                font-size: 1.6rem;
            }

            .promo-step {
                grid-template-columns: 1fr;
                gap: var(--spacing-3);
                padding: var(--spacing-4);
            }

            .promo-step-icon {
                width: 48px;
                height: 48px;
                font-size: 1.4rem;
            }

            .promo-step-tag {
                align-self: flex-start;
            }

            .package-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-4);
            }

            .guarantee-bar {
                grid-template-columns: 1fr;
                gap: var(--spacing-4);
            }

            .entry-matrix {
                grid-template-columns: 1fr;
                gap: var(--spacing-3);
            }

            .ranking-item {
                grid-template-columns: 40px 1fr 70px;
                gap: var(--spacing-2);
                font-size: 0.85rem;
            }

            .ranking-trend {
                display: none;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-5);
            }

            .floating-cta {
                bottom: 16px;
                padding: var(--spacing-2) var(--spacing-3);
                gap: var(--spacing-2);
            }

            .floating-cta-text {
                font-size: 0.8rem;
            }

            .floating-cta .btn {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.5rem;
            }

            .hero-cta-group {
                flex-direction: column;
            }

            .hero-cta-group .btn {
                width: 100%;
            }

            .section-title {
                font-size: 1.4rem;
            }

            .package-card {
                padding: var(--spacing-4);
            }

            .news-item {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--spacing-2);
            }

            .news-item-arrow {
                display: none;
            }
        }

/* roulang page: category1 */
:root {
            --primary-bg: #0B3C25;
            --secondary-bg: #062315;
            --accent-gold: #FFCC00;
            --accent-lime: #32CD32;
            --text-warm: #FFFDF0;
            --text-light-green: #C5E2D2;
            --border-soft: rgba(255, 204, 0, 0.25);
            --radius-sm: 12px;
            --radius-md: 18px;
            --radius-lg: 28px;
            --shadow-sm: 0 6px 16px rgba(0,0,0,0.2);
            --shadow-glow: 0 8px 28px rgba(255, 204, 0, 0.25);
            --transition-base: all 0.3s ease;
            --font-body: 'Segoe UI', 'Roboto', system-ui, -apple-system, 'Helvetica Neue', sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: var(--font-body);
            background-color: var(--primary-bg);
            color: var(--text-warm);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            transition: var(--transition-base);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        /* Header & Navigation */
        .site-header {
            background: rgba(6, 35, 21, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 204, 0, 0.18);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 18px rgba(0,0,0,0.25);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            min-height: 72px;
            gap: 10px;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--accent-gold);
            letter-spacing: -0.02em;
        }
        .logo-icon {
            font-size: 1.9rem;
            filter: drop-shadow(0 0 6px rgba(255,204,0,0.6));
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: var(--text-light-green);
            font-weight: 600;
            padding: 8px 14px;
            border-radius: 40px;
            font-size: 0.95rem;
            position: relative;
            transition: var(--transition-base);
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: var(--secondary-bg);
            background: var(--accent-gold);
            box-shadow: 0 0 12px rgba(255,204,0,0.5);
        }
        .nav-auth {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .btn-login {
            background: transparent;
            border: 1px solid rgba(255,255,255,0.4);
            color: var(--text-warm);
            padding: 8px 18px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition-base);
        }
        .btn-login:hover {
            border-color: var(--accent-gold);
            color: var(--accent-gold);
        }
        .btn-signup {
            background: var(--accent-gold);
            color: var(--secondary-bg);
            padding: 8px 20px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 0.9rem;
            border: none;
            box-shadow: 0 0 12px rgba(255,204,0,0.4);
            transition: var(--transition-base);
        }
        .btn-signup:hover {
            background: #FFD633;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(255,204,0,0.6);
        }
        /* Hero */
        .hero-guide {
            background: linear-gradient(145deg, rgba(6,35,21,0.85) 0%, rgba(11,60,37,0.9) 100%), url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            padding: 70px 0 50px;
            border-bottom: 2px solid var(--border-soft);
            position: relative;
        }
        .hero-guide .container {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,204,0,0.12);
            border: 1px solid var(--border-soft);
            padding: 6px 16px;
            border-radius: 40px;
            color: var(--accent-gold);
            font-weight: 600;
            font-size: 0.85rem;
            letter-spacing: 0.3px;
            margin-bottom: 20px;
        }
        .hero-title {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            max-width: 850px;
            color: #FFFDF0;
            margin-bottom: 20px;
        }
        .hero-title span {
            color: var(--accent-gold);
            text-shadow: 0 0 10px rgba(255,204,0,0.4);
        }
        .hero-sub {
            font-size: 1.2rem;
            max-width: 750px;
            color: var(--text-light-green);
            margin-bottom: 30px;
        }
        .hero-cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-cta-gold {
            background: var(--accent-gold);
            color: var(--secondary-bg);
            font-weight: 700;
            padding: 14px 28px;
            border-radius: 60px;
            border: none;
            box-shadow: 0 0 20px rgba(255,204,0,0.5);
            transition: var(--transition-base);
            font-size: 1rem;
        }
        .btn-cta-gold:hover {
            background: #FFE066;
            transform: translateY(-2px);
            box-shadow: 0 10px 26px rgba(255,204,0,0.7);
        }
        .btn-cta-outline {
            background: transparent;
            border: 1px solid var(--accent-gold);
            color: var(--accent-gold);
            font-weight: 600;
            padding: 14px 26px;
            border-radius: 60px;
            transition: var(--transition-base);
            font-size: 1rem;
        }
        .btn-cta-outline:hover {
            background: rgba(255,204,0,0.15);
            box-shadow: 0 0 16px rgba(255,204,0,0.3);
        }
        /* Sections */
        .section-pad {
            padding: 70px 0;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--accent-lime);
            font-weight: 700;
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 1.2px;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 2.1rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            margin-bottom: 18px;
            color: #FFFDF0;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-light-green);
            max-width: 780px;
            margin-bottom: 32px;
        }
        .divider-gold {
            width: 70px;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-gold), var(--accent-lime));
            border-radius: 3px;
            margin: 18px 0 28px;
        }
        /* Feature cards */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-item {
            background: rgba(255,255,255,0.03);
            border: 1px solid rgba(255,255,255,0.08);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: var(--transition-base);
        }
        .feature-item:hover {
            border-color: var(--accent-gold);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .feature-icon {
            font-size: 2rem;
            color: var(--accent-gold);
            margin-bottom: 14px;
        }
        .feature-item h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: #FFFDF0;
        }
        .feature-item p {
            color: var(--text-light-green);
            font-size: 0.95rem;
        }
        /* Steps / Process */
        .steps-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-top: 10px;
        }
        .steps-list li {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            background: rgba(6,35,21,0.7);
            border-left: 4px solid var(--accent-gold);
            padding: 18px 22px;
            border-radius: 14px;
            transition: var(--transition-base);
        }
        .steps-list li:hover {
            background: rgba(255,204,0,0.08);
            transform: translateX(4px);
        }
        .step-num {
            background: var(--accent-gold);
            color: var(--secondary-bg);
            width: 38px;
            height: 38px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .step-content h4 {
            font-weight: 700;
            margin-bottom: 4px;
            color: #FFFDF0;
        }
        .step-content p {
            color: var(--text-light-green);
            font-size: 0.95rem;
            margin-bottom: 0;
        }
        /* Image panel */
        .img-highlight {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 2px solid var(--border-soft);
            margin: 28px 0;
        }
        .img-highlight img {
            width: 100%;
            height: auto;
        }
        /* Stats */
        .stats-row {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
            margin-top: 28px;
        }
        .stat-block {
            background: rgba(255,255,255,0.04);
            padding: 22px 24px;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255,255,255,0.08);
            min-width: 140px;
            flex: 1;
            text-align: left;
        }
        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1.2;
        }
        .stat-label {
            color: var(--text-light-green);
            font-size: 0.9rem;
            font-weight: 500;
        }
        /* FAQ */
        .faq-accordion .accordion-item {
            background: rgba(6,35,21,0.7);
            border: 1px solid rgba(255,255,255,0.08);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
        }
        .faq-accordion .accordion-button {
            background: transparent;
            color: #FFFDF0;
            font-weight: 600;
            padding: 18px 22px;
            border-radius: var(--radius-sm);
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: rgba(255,204,0,0.12);
            color: var(--accent-gold);
            box-shadow: none;
        }
        .faq-accordion .accordion-body {
            color: var(--text-light-green);
            padding: 18px 22px;
        }
        /* CTA bottom */
        .cta-bottom {
            background: linear-gradient(135deg, rgba(11,60,37,0.95), rgba(6,35,21,0.98)), url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            border-radius: var(--radius-lg);
            padding: 50px 40px;
            text-align: left;
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-sm);
        }
        .cta-bottom h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #FFFDF0;
            margin-bottom: 14px;
        }
        .cta-bottom p {
            color: var(--text-light-green);
            max-width: 650px;
            margin-bottom: 24px;
        }
        /* Footer */
        .site-footer {
            background: var(--secondary-bg);
            padding: 50px 0 24px;
            border-top: 1px solid rgba(255,204,0,0.2);
            margin-top: 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 28px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--accent-gold);
            margin-bottom: 14px;
        }
        .footer-brand p {
            color: var(--text-light-green);
            font-size: 0.9rem;
            max-width: 300px;
        }
        .footer-column h3 {
            font-size: 1rem;
            font-weight: 700;
            color: #FFFDF0;
            margin-bottom: 14px;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            color: var(--text-light-green);
            font-size: 0.9rem;
            transition: var(--transition-base);
        }
        .footer-links a:hover {
            color: var(--accent-gold);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 22px;
            font-size: 0.85rem;
            color: var(--text-light-green);
        }
        .footer-payment {
            display: flex;
            gap: 8px;
        }
        .footer-payment-badge {
            background: rgba(255,255,255,0.08);
            padding: 4px 10px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.8rem;
        }
        /* FAB */
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 999;
            background: rgba(6,35,21,0.85);
            backdrop-filter: blur(8px);
            border: 2px solid var(--accent-gold);
            border-radius: 50%;
            width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-gold);
            box-shadow: 0 4px 20px rgba(255,204,0,0.35);
            cursor: pointer;
            transition: var(--transition-base);
            animation: floatFab 3s infinite ease-in-out;
        }
        .fab-left:hover {
            transform: scale(1.1);
            box-shadow: 0 8px 26px rgba(255,204,0,0.6);
        }
        .fab-left .notification-dot {
            position: absolute;
            top: 6px;
            right: 6px;
            width: 12px;
            height: 12px;
            background: #FF3B3B;
            border-radius: 50%;
            border: 2px solid var(--secondary-bg);
            animation: blinkDot 1.2s infinite;
        }
        @keyframes floatFab {
            0% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
            100% { transform: translateY(0); }
        }
        @keyframes blinkDot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .hero-title { font-size: 2.4rem; }
            .feature-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .nav-wrapper { flex-direction: column; align-items: flex-start; padding: 12px 0; }
            .main-nav { width: 100%; order: 3; gap: 2px; }
            .main-nav a { padding: 6px 10px; font-size: 0.85rem; }
            .hero-title { font-size: 1.9rem; }
            .section-title { font-size: 1.7rem; }
            .feature-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .steps-list li { flex-direction: column; }
        }
        @media (max-width: 520px) {
            .hero-guide { padding: 40px 0; }
            .hero-title { font-size: 1.6rem; }
            .hero-sub { font-size: 1rem; }
            .btn-cta-gold, .btn-cta-outline { padding: 12px 20px; font-size: 0.9rem; }
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; align-items: flex-start; }
            .nav-auth { width: 100%; justify-content: flex-start; }
            .fab-left { width: 48px; height: 48px; left: 12px; bottom: 80px; }
        }

/* roulang page: article */
:root {
            --primary: #0052FF;
            --primary-dark: #003DBF;
            --primary-light: #E8F0FF;
            --accent: #00F0FF;
            --bg: #F5F7FA;
            --surface: #FFFFFF;
            --text: #1A1A2E;
            --text-secondary: #4A5568;
            --text-muted: #718096;
            --border: #E2E8F0;
            --border-light: #EDF2F7;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.5rem;
            --spacing-lg: 2.5rem;
            --spacing-xl: 4rem;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Inter', '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-family);
            background: var(--bg);
            color: var(--text);
            line-height: 1.65;
            font-size: 16px;
            overflow-x: hidden;
        }

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

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

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

        button, .btn {
            cursor: pointer;
            font-family: var(--font-family);
            border: none;
            outline: none;
            transition: var(--transition);
        }

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

        /* Header & Navigation */
        .site-header {
            background: var(--surface);
            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: 72px;
            gap: 24px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--text);
            white-space: nowrap;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: #fff;
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
            justify-content: center;
        }

        .main-nav a {
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            position: relative;
        }

        .main-nav a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .main-nav a.active {
            background: var(--primary);
            color: #fff;
        }

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

        .btn {
            padding: 10px 20px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

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

        .btn-outline:hover {
            background: var(--primary-light);
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(0, 82, 255, 0.3);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(0, 82, 255, 0.4);
            color: #fff;
        }

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

        /* Mobile menu toggle */
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text);
            padding: 8px;
        }

        /* Article Page Layout */
        .article-wrapper {
            padding: var(--spacing-lg) 0 var(--spacing-xl);
        }

        .article-container {
            max-width: 860px;
            margin: 0 auto;
            padding: 0 24px;
        }

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

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

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

        .breadcrumb .separator {
            color: var(--border);
        }

        .article-header {
            margin-bottom: var(--spacing-lg);
        }

        .article-category-badge {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .article-title {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            font-size: 0.9rem;
            color: var(--text-muted);
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border-light);
        }

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

        .article-meta i {
            color: var(--primary);
        }

        /* Article Cover Image */
        .article-cover {
            margin-bottom: var(--spacing-lg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .article-cover img {
            width: 100%;
            object-fit: cover;
        }

        /* Pull Quote */
        .pull-quote {
            background: var(--surface);
            border-left: 4px solid var(--primary);
            padding: var(--spacing-md);
            margin: var(--spacing-lg) 0;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text);
            box-shadow: var(--shadow-sm);
            line-height: 1.6;
        }

        /* Article Content */
        .article-content {
            font-size: 1.05rem;
            line-height: 1.75;
            color: var(--text-secondary);
        }

        .article-content h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text);
            margin: var(--spacing-lg) 0 var(--spacing-sm);
            letter-spacing: -0.3px;
        }

        .article-content h3 {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--text);
            margin: var(--spacing-md) 0 var(--spacing-xs);
        }

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

        .article-content ul,
        .article-content ol {
            margin: var(--spacing-sm) 0 var(--spacing-md) var(--spacing-md);
            padding-left: var(--spacing-md);
        }

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

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

        .article-content blockquote {
            border-left: 4px solid var(--accent);
            padding: var(--spacing-sm) var(--spacing-md);
            margin: var(--spacing-md) 0;
            background: #F0F9FF;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text);
            font-style: italic;
        }

        /* Article Not Found */
        .article-not-found {
            text-align: center;
            padding: var(--spacing-xl) var(--spacing-md);
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
        }

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

        .article-not-found h2 {
            font-size: 1.5rem;
            margin-bottom: var(--spacing-sm);
        }

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

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-xl);
            padding: var(--spacing-xl) var(--spacing-lg);
            margin-top: var(--spacing-xl);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.2) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            position: relative;
            z-index: 1;
        }

        .cta-section p {
            font-size: 1.05rem;
            margin-bottom: var(--spacing-md);
            opacity: 0.9;
            position: relative;
            z-index: 1;
            max-width: 600px;
        }

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

        .btn-light {
            background: #fff;
            color: var(--primary);
            font-weight: 700;
        }

        .btn-light:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
            color: var(--primary-dark);
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border: 2px solid rgba(0, 240, 255, 0.6);
            color: #fff;
            font-size: 1.4rem;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0.6;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            transition: var(--transition);
            animation: fabPulse 3s ease-in-out infinite;
        }

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

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

        .fab .fab-notification {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 16px;
            height: 16px;
            background: #FF007F;
            border-radius: 50%;
            border: 2px solid #fff;
            animation: blink 1.5s ease-in-out infinite;
        }

        @keyframes fabPulse {
            0%, 100% { opacity: 0.6; }
            50% { opacity: 0.9; }
        }

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

        /* Footer */
        .site-footer {
            background: #0D111E;
            color: #CBD5E1;
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: var(--spacing-xl);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-sm);
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.6;
            color: var(--text-muted);
            max-width: 340px;
        }

        .footer-column h3 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: var(--spacing-sm);
        }

        .footer-links {
            list-style: none;
            padding: 0;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

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

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            padding-top: var(--spacing-md);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.85rem;
            color: var(--text-muted);
        }

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

        .footer-payment-badge {
            background: rgba(255, 255, 255, 0.1);
            padding: 6px 14px;
            border-radius: 6px;
            font-size: 0.8rem;
            font-weight: 600;
            color: #fff;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            
            .article-title {
                font-size: 1.9rem;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }
            
            .main-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--surface);
                flex-direction: column;
                padding: var(--spacing-md);
                gap: 4px;
                box-shadow: var(--shadow-lg);
                display: none;
                align-items: stretch;
            }
            
            .main-nav.open {
                display: flex;
            }
            
            .main-nav a {
                text-align: center;
                padding: 12px;
                border-radius: var(--radius-sm);
            }
            
            .menu-toggle {
                display: block;
            }
            
            .nav-actions {
                gap: 8px;
            }
            
            .btn {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
            
            .article-title {
                font-size: 1.6rem;
            }
            
            .article-content {
                font-size: 1rem;
            }
            
            .cta-section {
                padding: var(--spacing-lg) var(--spacing-md);
            }
            
            .cta-section h2 {
                font-size: 1.4rem;
            }
            
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            
            .fab {
                left: 12px;
                bottom: 80px;
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            
            .article-container {
                padding: 0 16px;
            }
            
            .article-title {
                font-size: 1.4rem;
            }
            
            .article-meta {
                gap: 12px;
                font-size: 0.8rem;
            }
            
            .logo span:last-child {
                font-size: 0.95rem;
            }
            
            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 1.2rem;
            }
            
            .nav-actions .btn-outline {
                display: inline-flex;
            }
            
            .nav-actions .btn-primary {
                display: inline-flex;
            }
        }

/* roulang page: category2 */
:root {
            --primary-blue: #1a5cff;
            --primary-blue-dark: #0d3ba8;
            --primary-blue-light: #e8efff;
            --accent-orange: #ff6b2c;
            --accent-orange-hover: #e85a1f;
            --accent-gold: #ffb800;
            --bg-white: #ffffff;
            --bg-light: #f5f8ff;
            --bg-gray: #f0f3f9;
            --text-dark: #1a2233;
            --text-body: #3d4859;
            --text-muted: #7a8699;
            --border-light: #e4e9f2;
            --border-medium: #d0d9e8;
            --shadow-sm: 0 2px 8px rgba(26, 92, 255, 0.06);
            --shadow-md: 0 6px 20px rgba(26, 92, 255, 0.10);
            --shadow-lg: 0 12px 36px rgba(26, 92, 255, 0.14);
            --shadow-xl: 0 20px 50px rgba(26, 92, 255, 0.18);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --font-family: 'Be Vietnam Pro', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        html {
            scroll-behavior: smooth;
        }
        
        body {
            font-family: var(--font-family);
            color: var(--text-body);
            background-color: var(--bg-white);
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        a {
            text-decoration: none;
            color: var(--primary-blue);
            transition: var(--transition);
        }
        
        a:hover {
            color: var(--primary-blue-dark);
        }
        
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }
        
        /* Header / Navbar */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1050;
            padding: 0;
            transition: var(--transition);
        }
        
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        
        .navbar-brand-custom {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--text-dark);
            white-space: nowrap;
        }
        
        .navbar-brand-custom .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-dark));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.3rem;
            flex-shrink: 0;
        }
        
        .navbar-brand-custom .brand-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }
        
        .navbar-brand-custom .brand-text .brand-name {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: -0.3px;
        }
        
        .navbar-brand-custom .brand-text .brand-sub {
            font-size: 0.7rem;
            font-weight: 500;
            color: var(--text-muted);
            letter-spacing: 0.3px;
        }
        
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        
        .main-nav a {
            color: var(--text-body);
            font-weight: 500;
            font-size: 0.92rem;
            padding: 8px 16px;
            border-radius: 30px;
            transition: var(--transition);
            white-space: nowrap;
            position: relative;
        }
        
        .main-nav a:hover {
            color: var(--primary-blue);
            background: var(--primary-blue-light);
        }
        
        .main-nav a.active {
            color: #fff;
            background: var(--primary-blue);
            box-shadow: 0 4px 14px rgba(26, 92, 255, 0.3);
            font-weight: 600;
        }
        
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .btn-login-nav {
            color: var(--text-dark);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 8px 16px;
            border-radius: 30px;
            background: transparent;
            border: none;
            transition: var(--transition);
            white-space: nowrap;
        }
        
        .btn-login-nav:hover {
            background: var(--bg-gray);
            color: var(--text-dark);
        }
        
        .btn-signup-nav {
            background: var(--accent-orange);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            padding: 9px 20px;
            border-radius: 30px;
            border: none;
            transition: var(--transition);
            white-space: nowrap;
            box-shadow: 0 4px 12px rgba(255, 107, 44, 0.35);
        }
        
        .btn-signup-nav:hover {
            background: var(--accent-orange-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(255, 107, 44, 0.45);
        }
        
        .navbar-toggler {
            border: 1px solid var(--border-medium);
            border-radius: 10px;
            padding: 8px 10px;
            background: #fff;
        }
        
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(26, 92, 255, 0.15);
            border-color: var(--primary-blue);
        }
        
        /* Hero Section */
        .hero-section {
            background: linear-gradient(165deg, #e8efff 0%, #f5f8ff 40%, #ffffff 100%);
            padding: 60px 0 50px;
            position: relative;
            overflow: hidden;
        }
        
        .hero-section::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -120px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(26, 92, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -80px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 107, 44, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            border: 1px solid var(--border-medium);
            border-radius: 50px;
            padding: 6px 16px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary-blue);
            margin-bottom: 18px;
            box-shadow: var(--shadow-sm);
        }
        
        .hero-badge .badge-dot {
            width: 8px;
            height: 8px;
            background: var(--accent-orange);
            border-radius: 50%;
            animation: pulse-dot 2s infinite;
        }
        
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.6; transform: scale(1.3); }
        }
        
        .hero-title {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--text-dark);
            line-height: 1.25;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
        }
        
        .hero-title .highlight {
            color: var(--primary-blue);
            position: relative;
        }
        
        .hero-title .highlight::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 0;
            right: 0;
            height: 6px;
            background: rgba(255, 184, 0, 0.5);
            border-radius: 4px;
            z-index: -1;
        }
        
        .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 560px;
        }
        
        .hero-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 30px;
        }
        
        .btn-primary-custom {
            background: var(--primary-blue);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            padding: 13px 28px;
            border-radius: 30px;
            border: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 8px 24px rgba(26, 92, 255, 0.3);
        }
        
        .btn-primary-custom:hover {
            background: var(--primary-blue-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(26, 92, 255, 0.4);
        }
        
        .btn-outline-custom {
            background: #fff;
            color: var(--text-dark);
            font-weight: 600;
            font-size: 1rem;
            padding: 13px 24px;
            border-radius: 30px;
            border: 1.5px solid var(--border-medium);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        
        .btn-outline-custom:hover {
            border-color: var(--primary-blue);
            color: var(--primary-blue);
            background: var(--primary-blue-light);
            transform: translateY(-2px);
        }
        
        .hero-stats {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }
        
        .hero-stat-item {
            display: flex;
            flex-direction: column;
        }
        
        .hero-stat-value {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.5px;
        }
        
        .hero-stat-label {
            font-size: 0.82rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        
        .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }
        
        .hero-visual-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-light);
            max-width: 420px;
            width: 100%;
            position: relative;
            z-index: 2;
        }
        
        .hero-visual-card .visual-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 16px;
        }
        
        .hero-visual-card .visual-title {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--text-dark);
        }
        
        .hero-visual-card .visual-badge {
            background: #fff3e6;
            color: var(--accent-orange);
            font-size: 0.78rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 20px;
        }
        
        .hero-visual-card .visual-image-wrapper {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 14px;
            position: relative;
        }
        
        .hero-visual-card .visual-image-wrapper img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: var(--radius-md);
        }
        
        .hero-visual-card .visual-image-wrapper .flash-badge {
            position: absolute;
            top: 10px;
            left: 10px;
            background: #ff3b30;
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 20px;
            display: flex;
            align-items: center;
            gap: 5px;
        }
        
        .hero-visual-card .countdown-row {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 14px;
            background: #f0f5ff;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
        }
        
        .hero-visual-card .countdown-label {
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-muted);
        }
        
        .hero-visual-card .countdown-timer {
            display: flex;
            gap: 6px;
            font-weight: 800;
            color: var(--primary-blue);
            font-size: 1.1rem;
        }
        
        .hero-visual-card .countdown-timer span {
            background: #fff;
            padding: 4px 8px;
            border-radius: 6px;
            box-shadow: var(--shadow-sm);
        }
        
        .btn-grab-custom {
            width: 100%;
            background: linear-gradient(135deg, #ff6b2c, #e85a1f);
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            padding: 14px;
            border-radius: var(--radius-sm);
            border: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            box-shadow: 0 8px 20px rgba(255, 107, 44, 0.4);
        }
        
        .btn-grab-custom:hover {
            background: linear-gradient(135deg, #e85a1f, #d14e14);
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(255, 107, 44, 0.5);
        }
        
        /* Section Title */
        .section-title-area {
            margin-bottom: 32px;
        }
        
        .section-title {
            font-size: 1.9rem;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.4px;
            margin-bottom: 10px;
            line-height: 1.3;
        }
        
        .section-subtitle {
            font-size: 1.02rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 640px;
        }
        
        .section-tag {
            display: inline-block;
            background: var(--primary-blue-light);
            color: var(--primary-blue);
            font-size: 0.8rem;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 20px;
            margin-bottom: 10px;
            letter-spacing: 0.4px;
            text-transform: uppercase;
        }
        
        /* Tips Cards */
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }
        
        .tip-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }
        
        .tip-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary-blue), var(--accent-gold));
            opacity: 0;
            transition: var(--transition);
        }
        
        .tip-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--border-medium);
        }
        
        .tip-card:hover::before {
            opacity: 1;
        }
        
        .tip-card-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-blue-light);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            color: var(--primary-blue);
            font-size: 1.3rem;
        }
        
        .tip-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        
        .tip-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }
        
        /* Warning / Notice Section */
        .notice-section {
            background: linear-gradient(135deg, #fff8f0 0%, #fff 100%);
            border: 1.5px solid #ffe0c2;
            border-radius: var(--radius-lg);
            padding: 32px;
            position: relative;
            overflow: hidden;
        }
        
        .notice-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 5px;
            height: 100%;
            background: var(--accent-orange);
        }
        
        .notice-title {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .notice-title i {
            color: var(--accent-orange);
        }
        
        .notice-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .notice-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            font-size: 0.95rem;
            color: var(--text-body);
            border-bottom: 1px solid #f5e6d8;
        }
        
        .notice-list li:last-child {
            border-bottom: none;
        }
        
        .notice-list li i {
            color: var(--accent-orange);
            font-size: 1.1rem;
            margin-top: 2px;
        }
        
        /* Steps Section */
        .steps-wrapper {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 16px;
        }
        
        .step-item {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 20px;
            display: flex;
            align-items: flex-start;
            gap: 14px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        
        .step-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        
        .step-number {
            width: 36px;
            height: 36px;
            background: var(--primary-blue);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
        }
        
        .step-content h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 5px;
        }
        
        .step-content p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }
        
        /* FAQ */
        .faq-section {
            background: var(--bg-light);
            border-radius: var(--radius-lg);
            padding: 40px;
        }
        
        .accordion-custom .accordion-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            background: #fff;
            box-shadow: var(--shadow-sm);
        }
        
        .accordion-custom .accordion-button {
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--text-dark);
            background: #fff;
            padding: 18px 20px;
            border: none;
            box-shadow: none;
        }
        
        .accordion-custom .accordion-button:not(.collapsed) {
            background: var(--primary-blue-light);
            color: var(--primary-blue);
        }
        
        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            border-color: var(--primary-blue);
        }
        
        .accordion-custom .accordion-body {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
            padding: 16px 20px 20px;
            background: #fff;
        }
        
        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
            border-radius: var(--radius-xl);
            padding: 50px 40px;
            position: relative;
            overflow: hidden;
        }
        
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 250px;
            height: 250px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
            pointer-events: none;
        }
        
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -40px;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }
        
        .cta-title {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.4px;
            margin-bottom: 12px;
            line-height: 1.3;
        }
        
        .cta-text {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            margin-bottom: 24px;
            max-width: 560px;
        }
        
        .btn-cta-light {
            background: #fff;
            color: var(--primary-blue-dark);
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 30px;
            border-radius: 30px;
            border: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        }
        
        .btn-cta-light:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
            color: var(--primary-blue-dark);
        }
        
        /* Footer */
        .site-footer {
            background: #0f1729;
            color: #b0b8c9;
            padding: 50px 0 30px;
            margin-top: 60px;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 30px;
            margin-bottom: 35px;
        }
        
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        
        .footer-logo .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-dark));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.2rem;
        }
        
        .footer-logo span:last-child {
            font-weight: 700;
            font-size: 1.05rem;
            color: #fff;
        }
        
        .footer-brand p {
            font-size: 0.88rem;
            color: #8a94a8;
            line-height: 1.7;
            margin-bottom: 0;
        }
        
        .footer-column h3 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .footer-links li {
            margin-bottom: 8px;
        }
        
        .footer-links a {
            color: #8a94a8;
            font-size: 0.88rem;
            transition: var(--transition);
        }
        
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.82rem;
            color: #6b7588;
        }
        
        .footer-payment {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        
        .footer-payment-badge {
            background: rgba(255, 255, 255, 0.08);
            color: #d0d5e0;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            border: 1px solid rgba(255, 255, 255, 0.12);
        }
        
        /* FAB - Left Floating Action Button */
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 24px;
            z-index: 1040;
            width: 56px;
            height: 56px;
            background: #fff;
            border-radius: 50%;
            border: 2px solid var(--primary-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-blue);
            font-size: 1.4rem;
            box-shadow: 0 6px 24px rgba(26, 92, 255, 0.3);
            cursor: pointer;
            transition: var(--transition);
            animation: fab-float 3s ease-in-out infinite;
            opacity: 0.7;
        }
        
        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 10px 32px rgba(26, 92, 255, 0.45);
        }
        
        .fab-left:active {
            transform: scale(0.95);
        }
        
        .fab-left .fab-notification {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: #ff3b30;
            border-radius: 50%;
            border: 2px solid #fff;
            animation: blink-notification 1.5s infinite;
        }
        
        @keyframes fab-float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
        }
        
        @keyframes blink-notification {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        
        /* Responsive */
        @media (max-width: 991.98px) {
            .hero-title {
                font-size: 2.1rem;
            }
            
            .hero-visual {
                margin-top: 30px;
            }
            
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            
            .cta-section {
                padding: 36px 28px;
            }
            
            .cta-title {
                font-size: 1.6rem;
            }
        }
        
        @media (max-width: 767.98px) {
            .hero-section {
                padding: 40px 0 35px;
            }
            
            .hero-title {
                font-size: 1.75rem;
            }
            
            .hero-subtitle {
                font-size: 0.98rem;
            }
            
            .hero-stats {
                gap: 18px;
            }
            
            .hero-stat-value {
                font-size: 1.25rem;
            }
            
            .section-title {
                font-size: 1.5rem;
            }
            
            .tips-grid {
                grid-template-columns: 1fr;
            }
            
            .steps-wrapper {
                grid-template-columns: 1fr;
            }
            
            .notice-section {
                padding: 24px 20px;
            }
            
            .faq-section {
                padding: 24px 16px;
            }
            
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 12px;
            }
            
            .main-nav {
                padding: 10px 0;
                gap: 4px;
            }
            
            .main-nav a {
                font-size: 0.85rem;
                padding: 7px 12px;
            }
            
            .nav-actions {
                padding: 8px 0;
                gap: 6px;
            }
            
            .btn-login-nav, .btn-signup-nav {
                font-size: 0.82rem;
                padding: 7px 14px;
            }
            
            .hero-visual-card .visual-image-wrapper img {
                height: 140px;
            }
        }
        
        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.5rem;
            }
            
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            
            .btn-primary-custom, .btn-outline-custom {
                justify-content: center;
                width: 100%;
            }
            
            .hero-stats {
                gap: 14px;
                flex-wrap: wrap;
            }
            
            .hero-visual-card {
                padding: 16px;
            }
            
            .section-title {
                font-size: 1.35rem;
            }
            
            .cta-section {
                padding: 28px 20px;
                border-radius: var(--radius-lg);
            }
            
            .cta-title {
                font-size: 1.4rem;
            }
            
            .fab-left {
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
                left: 12px;
                bottom: 16px;
            }
        }