/* roulang page: index */
:root {
            --primary: #0a2e1c;
            --primary-deep: #062315;
            --primary-light: #123e25;
            --gold: #ffd700;
            --gold-soft: #f0e68c;
            --red: #d32f2f;
            --mint: #d1f2eb;
            --white: #ffffff;
            --bg: #f6f9f7;
            --surface: #ffffff;
            --text: #1a2e26;
            --text-soft: #4d635a;
            --text-muted: #7b8f87;
            --border: #dde8e3;
            --border-strong: #bcd0c8;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 6px 24px rgba(10, 46, 28, 0.08);
            --shadow-hover: 0 14px 36px rgba(10, 46, 28, 0.15);
            --transition: 0.25s ease;
            --font-sans: 'Inter', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
        }

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

        body {
            font-family: var(--font-sans);
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

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

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

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

        .container-custom {
            width: 100%;
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header & Navigation */
        .site-header {
            background: var(--primary-deep);
            border-bottom: 2px solid rgba(255, 215, 0, 0.35);
            position: sticky;
            top: 0;
            z-index: 1040;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
        }

        .navbar-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding-top: 14px;
            padding-bottom: 14px;
            min-height: 72px;
        }

        .navbar-brand-custom {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--gold);
            letter-spacing: -0.02em;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            line-height: 1.3;
        }

        .navbar-brand-custom .brand-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--gold), #b8860b);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-deep);
            font-size: 1.4rem;
            flex-shrink: 0;
        }

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

        .nav-links-desktop .nav-link-item {
            color: var(--mint);
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            padding: 6px 0;
            letter-spacing: 0.01em;
            transition: color var(--transition);
        }

        .nav-links-desktop .nav-link-item:hover,
        .nav-links-desktop .nav-link-item.active {
            color: var(--gold);
        }

        .nav-links-desktop .nav-link-item.active::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--gold);
            border-radius: 4px;
        }

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

        .btn-login-text {
            background: transparent;
            border: none;
            color: var(--mint);
            font-weight: 600;
            padding: 8px 14px;
            font-size: 0.95rem;
            cursor: pointer;
            transition: color var(--transition);
        }

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

        .btn-signup-solid {
            background: var(--gold);
            color: var(--primary-deep);
            border: none;
            font-weight: 700;
            padding: 10px 22px;
            border-radius: 40px;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: 0 4px 14px rgba(255, 215, 0, 0.25);
            letter-spacing: 0.01em;
        }

        .btn-signup-solid:hover {
            background: #ffe44d;
            box-shadow: 0 8px 22px rgba(255, 215, 0, 0.4);
            transform: translateY(-1px);
        }

        .btn-signup-solid:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(255, 215, 0, 0.3);
        }

        .navbar-toggler-custom {
            display: none;
            background: transparent;
            border: 1.5px solid var(--gold);
            color: var(--gold);
            border-radius: 8px;
            padding: 6px 12px;
            font-size: 1.4rem;
            cursor: pointer;
            transition: all var(--transition);
        }

        .navbar-toggler-custom:hover {
            background: rgba(255, 215, 0, 0.12);
        }

        .mobile-menu {
            display: none;
            background: var(--primary-light);
            padding: 16px 0;
            border-top: 1px solid rgba(255, 215, 0, 0.2);
        }

        .mobile-menu.open {
            display: block;
        }

        .mobile-menu .nav-link-item {
            display: block;
            color: var(--mint);
            padding: 12px 0;
            font-weight: 500;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .mobile-menu .nav-link-item.active {
            color: var(--gold);
        }

        /* Hero */
        .hero-section {
            background: linear-gradient(140deg, var(--primary-deep) 0%, var(--primary) 55%, var(--primary-light) 100%);
            padding: 72px 0 64px;
            color: var(--white);
            position: relative;
            overflow: hidden;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.14), transparent 65%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            bottom: -180px;
            left: -100px;
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.1), transparent 65%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 48px;
            align-items: center;
        }

        .hero-icon-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 28px;
        }

        .hero-icon-badge {
            width: 58px;
            height: 58px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 215, 0, 0.35);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--gold);
            font-size: 1.6rem;
            transition: all var(--transition);
            cursor: default;
        }

        .hero-icon-badge:hover {
            background: rgba(255, 215, 0, 0.16);
            transform: translateY(-4px);
            border-color: var(--gold);
        }

        .hero-status-bar {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--mint);
            background: rgba(0, 0, 0, 0.25);
            padding: 10px 18px;
            border-radius: 40px;
            margin-bottom: 24px;
            width: fit-content;
            border: 1px solid rgba(255, 215, 0, 0.25);
        }

        .status-dot {
            width: 10px;
            height: 10px;
            background: #2ecc71;
            border-radius: 50%;
            animation: pulse-dot 1.8s infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(0.75); }
        }

        .hero-title {
            font-size: 3.1rem;
            font-weight: 800;
            line-height: 1.18;
            letter-spacing: -0.025em;
            margin-bottom: 22px;
            color: var(--white);
        }

        .hero-title .gold-highlight {
            color: var(--gold);
            position: relative;
        }

        .hero-subtitle {
            font-size: 1.12rem;
            color: var(--mint);
            line-height: 1.7;
            max-width: 580px;
            margin-bottom: 30px;
        }

        .hero-cta-row {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
            margin-bottom: 36px;
        }

        .btn-hero-primary {
            background: var(--gold);
            color: var(--primary-deep);
            border: none;
            font-weight: 700;
            padding: 14px 30px;
            border-radius: 40px;
            font-size: 1rem;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: 0 8px 24px rgba(255, 215, 0, 0.3);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-hero-primary:hover {
            background: #ffe44d;
            transform: translateY(-2px);
            box-shadow: 0 14px 32px rgba(255, 215, 0, 0.45);
        }

        .btn-hero-outline {
            background: transparent;
            border: 1.5px solid var(--gold);
            color: var(--gold);
            font-weight: 600;
            padding: 13px 28px;
            border-radius: 40px;
            font-size: 1rem;
            cursor: pointer;
            transition: all var(--transition);
        }

        .btn-hero-outline:hover {
            background: rgba(255, 215, 0, 0.12);
            border-color: #ffe44d;
        }

        .hero-data-points {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
        }

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

        .hero-data-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--gold);
            line-height: 1.2;
        }

        .hero-data-label {
            font-size: 0.85rem;
            color: var(--mint);
            opacity: 0.85;
        }

        .hero-right-panel {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 215, 0, 0.22);
            border-radius: 24px;
            padding: 32px;
            backdrop-filter: blur(8px);
        }

        .hero-right-panel h2 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--gold);
            margin-bottom: 20px;
        }

        .hero-step-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .hero-step-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            color: var(--mint);
            font-size: 0.95rem;
        }

        .step-number {
            width: 36px;
            height: 36px;
            background: var(--gold);
            color: var(--primary-deep);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.95rem;
            flex-shrink: 0;
        }

        /* Section Base */
        .section-block {
            padding: 72px 0;
        }

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

        .section-block-mint {
            background: #edf5f1;
        }

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

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--red);
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--primary-deep);
            margin-bottom: 14px;
            line-height: 1.25;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-soft);
            max-width: 680px;
            line-height: 1.7;
        }

        /* Series Navigation */
        .series-nav-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .series-nav-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px 28px;
            flex: 1 1 240px;
            min-width: 220px;
            display: flex;
            align-items: center;
            gap: 16px;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: var(--shadow);
        }

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

        .series-nav-icon {
            width: 52px;
            height: 52px;
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--gold);
            font-size: 1.4rem;
            flex-shrink: 0;
        }

        .series-nav-info h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary-deep);
            margin-bottom: 4px;
        }

        .series-nav-info p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* Featured Games */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 24px;
        }

        .featured-card {
            background: var(--surface);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all var(--transition);
            cursor: pointer;
        }

        .featured-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-6px);
            border-color: var(--gold);
        }

        .featured-card-img {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .featured-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--red);
            color: var(--white);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 30px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }

        .featured-card-body {
            padding: 20px;
        }

        .featured-card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary-deep);
            margin-bottom: 8px;
        }

        .featured-card-body p {
            font-size: 0.9rem;
            color: var(--text-soft);
            margin-bottom: 14px;
            line-height: 1.55;
        }

        .featured-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .featured-meta .rating {
            color: var(--gold);
            font-weight: 700;
        }

        /* News / CMS List */
        .news-layout {
            display: grid;
            grid-template-columns: 1.3fr 0.7fr;
            gap: 40px;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .news-item {
            display: flex;
            align-items: baseline;
            gap: 18px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border);
            transition: all var(--transition);
        }

        .news-item:hover {
            background: rgba(255, 215, 0, 0.04);
            padding-left: 12px;
        }

        .news-item:first-child {
            border-top: 1px solid var(--border);
        }

        .news-date {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-muted);
            white-space: nowrap;
            min-width: 70px;
        }

        .news-item-content h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary-deep);
            margin-bottom: 4px;
            line-height: 1.45;
        }

        .news-item-content p {
            font-size: 0.88rem;
            color: var(--text-soft);
            margin: 0;
            line-height: 1.5;
        }

        .news-sidebar {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            box-shadow: var(--shadow);
            height: fit-content;
        }

        .news-sidebar h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary-deep);
            margin-bottom: 18px;
        }

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

        .sidebar-topic-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
        }

        .sidebar-topic-list li:last-child {
            border-bottom: none;
        }

        .sidebar-topic-list a {
            color: var(--text-soft);
            font-size: 0.92rem;
            font-weight: 500;
            transition: color var(--transition);
        }

        .sidebar-topic-list a:hover {
            color: var(--red);
        }

        /* Membership Entry */
        .membership-section {
            background: linear-gradient(135deg, var(--primary-deep), var(--primary));
            border-radius: 28px;
            padding: 56px;
            color: var(--white);
            position: relative;
            overflow: hidden;
        }

        .membership-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -60px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.16), transparent 65%);
            border-radius: 50%;
        }

        .membership-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
        }

        .membership-inner h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--gold);
            margin-bottom: 16px;
        }

        .membership-inner p {
            font-size: 1.05rem;
            color: var(--mint);
            line-height: 1.7;
            margin-bottom: 26px;
            max-width: 540px;
        }

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

        .membership-card-preview {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 215, 0, 0.3);
            border-radius: 20px;
            padding: 28px;
            text-align: left;
        }

        .membership-card-preview h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--gold);
            margin-bottom: 16px;
        }

        .membership-benefit-list {
            list-style: none;
        }

        .membership-benefit-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--mint);
            font-size: 0.92rem;
            padding: 8px 0;
        }

        .membership-benefit-list li i {
            color: var(--gold);
            font-size: 1rem;
        }

        /* Pricing Comparison */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
            align-items: stretch;
        }

        .pricing-card {
            background: var(--surface);
            border: 1.5px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 28px;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            position: relative;
            display: flex;
            flex-direction: column;
        }

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

        .pricing-card.featured {
            border-color: var(--gold);
            background: #fffef5;
            box-shadow: 0 14px 40px rgba(255, 215, 0, 0.2);
        }

        .pricing-badge {
            position: absolute;
            top: -12px;
            right: 20px;
            background: var(--red);
            color: var(--white);
            font-size: 0.72rem;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 30px;
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }

        .pricing-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary-deep);
            margin-bottom: 8px;
        }

        .pricing-price {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary-deep);
            margin-bottom: 18px;
        }

        .pricing-price span {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
        }

        .pricing-features {
            list-style: none;
            margin-bottom: 24px;
            flex-grow: 1;
        }

        .pricing-features li {
            padding: 7px 0;
            color: var(--text-soft);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .pricing-features li i {
            color: var(--gold);
            font-size: 0.9rem;
        }

        /* Hot Topics */
        .topic-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .topic-tag {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 40px;
            padding: 10px 20px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-soft);
            cursor: pointer;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .topic-tag:hover {
            border-color: var(--gold);
            background: #fffef5;
            color: var(--primary-deep);
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }

        .topic-tag i {
            color: var(--red);
            font-size: 0.85rem;
        }

        /* FAQ */
        .accordion-custom .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm) !important;
            margin-bottom: 14px;
            overflow: hidden;
            background: var(--surface);
            box-shadow: var(--shadow);
        }

        .accordion-custom .accordion-button {
            font-weight: 700;
            color: var(--primary-deep);
            font-size: 1rem;
            padding: 20px 24px;
            background: var(--surface);
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background: #fffef5;
            color: var(--red);
            box-shadow: none;
        }

        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            border-color: var(--gold);
        }

        .accordion-custom .accordion-body {
            font-size: 0.95rem;
            color: var(--text-soft);
            line-height: 1.7;
            padding: 20px 24px;
        }

        /* CTA */
        .cta-band {
            background: linear-gradient(135deg, var(--red), #b71c1c);
            border-radius: 24px;
            padding: 48px 40px;
            color: var(--white);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            box-shadow: 0 16px 40px rgba(211, 47, 47, 0.25);
        }

        .cta-band h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 8px;
            color: var(--gold);
        }

        .cta-band p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.9);
            margin: 0;
            max-width: 480px;
        }

        /* Footer */
        .site-footer {
            background: var(--primary-deep);
            color: var(--mint);
            padding: 56px 0 28px;
            border-top: 3px solid var(--gold);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.3fr 0.7fr 0.7fr 0.9fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-brand h3 {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--gold);
            margin-bottom: 14px;
            line-height: 1.4;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: var(--mint);
            opacity: 0.8;
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--gold);
            margin-bottom: 16px;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        .footer-col ul {
            list-style: none;
        }

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

        .footer-col ul a {
            color: var(--mint);
            font-size: 0.9rem;
            opacity: 0.85;
            transition: all var(--transition);
        }

        .footer-col ul a:hover {
            color: var(--gold);
            opacity: 1;
            padding-left: 4px;
        }

        .footer-legal {
            border-top: 1px solid rgba(255, 215, 0, 0.2);
            padding-top: 22px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--mint);
            opacity: 0.7;
        }

        .footer-legal a {
            color: var(--mint);
            opacity: 0.85;
        }

        .footer-legal a:hover {
            color: var(--gold);
            opacity: 1;
        }

        .footer-badge-18 {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 215, 0, 0.12);
            border: 1px solid rgba(255, 215, 0, 0.4);
            color: var(--gold);
            border-radius: 30px;
            padding: 5px 14px;
            font-weight: 700;
            font-size: 0.8rem;
        }

        /* FAB */
        .fab-floating {
            position: fixed;
            left: 18px;
            bottom: 96px;
            z-index: 1050;
            width: 56px;
            height: 56px;
            background: var(--primary-deep);
            border: 3px solid var(--gold);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--gold);
            font-size: 1.5rem;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            transition: all var(--transition);
            opacity: 0.7;
            animation: fab-float 3s ease-in-out infinite;
        }

        .fab-floating:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 8px 30px rgba(255, 215, 0, 0.5);
            animation-play-state: paused;
        }

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

        .fab-notification {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 16px;
            height: 16px;
            background: #e53935;
            border: 2px solid var(--primary-deep);
            border-radius: 50%;
            animation: fab-blink 1.6s infinite;
        }

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

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

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .hero-right-panel {
                max-width: 600px;
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .membership-inner {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links-desktop {
                display: none;
            }
            .navbar-toggler-custom {
                display: block;
            }
            .mobile-menu {
                display: none;
            }
            .mobile-menu.open {
                display: block;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .hero-section {
                padding: 48px 0;
            }
            .section-block {
                padding: 48px 0;
            }
            .membership-section {
                padding: 36px 24px;
            }
            .cta-band {
                padding: 32px 24px;
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .pricing-grid {
                grid-template-columns: 1fr;
            }
            .featured-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
        }

        @media (max-width: 520px) {
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .hero-data-points {
                gap: 18px;
            }
            .hero-data-number {
                font-size: 1.4rem;
            }
            .btn-signup-solid {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
            .navbar-brand-custom {
                font-size: 1rem;
            }
            .hero-icon-badge {
                width: 46px;
                height: 46px;
                font-size: 1.2rem;
            }
            .series-nav-card {
                flex: 1 1 100%;
                min-width: 100%;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1a56db;
            --primary-dark: #10408f;
            --primary-light: #e8efff;
            --accent: #ff7a00;
            --accent-dark: #e06a00;
            --bg: #f7f9fc;
            --bg-white: #ffffff;
            --text: #1a2333;
            --text-light: #5a6a82;
            --text-muted: #8a96a8;
            --border: #e2e8f0;
            --border-light: #eef2f7;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 6px 18px rgba(0,0,0,0.08);
            --shadow-lg: 0 14px 40px rgba(0,0,0,0.1);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-xxl: 80px;
            --transition: all 0.25s ease;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Segoe UI', 'Inter', 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        
        a {
            text-decoration: none;
            color: var(--primary);
            transition: var(--transition);
        }
        
        a:hover {
            color: var(--primary-dark);
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        .container-custom {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        
        /* Header & Navigation */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
        }
        
        .navbar-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        
        .navbar-brand-custom {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--text);
            white-space: nowrap;
        }
        
        .navbar-brand-custom:hover {
            color: var(--primary);
        }
        
        .brand-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        
        .nav-links-desktop {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
            justify-content: center;
        }
        
        .nav-link-item {
            padding: 8px 16px;
            border-radius: 8px;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-light);
            transition: var(--transition);
            white-space: nowrap;
        }
        
        .nav-link-item:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        
        .nav-link-item.active {
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
        }
        
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .btn-login-text {
            background: transparent;
            border: none;
            color: var(--text);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 8px 12px;
            border-radius: 8px;
            cursor: pointer;
            transition: var(--transition);
        }
        
        .btn-login-text:hover {
            background: var(--border-light);
            color: var(--primary);
        }
        
        .btn-signup-solid {
            background: var(--primary);
            color: #fff;
            border: none;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 10px 20px;
            border-radius: 8px;
            cursor: pointer;
            transition: var(--transition);
        }
        
        .btn-signup-solid:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 12px rgba(26,86,219,0.3);
            transform: translateY(-1px);
        }
        
        .navbar-toggler-custom {
            display: none;
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text);
            width: 42px;
            height: 42px;
            border-radius: 8px;
            cursor: pointer;
            font-size: 1.1rem;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }
        
        .navbar-toggler-custom:hover {
            background: var(--border-light);
            border-color: var(--primary);
            color: var(--primary);
        }
        
        .mobile-menu {
            display: none;
            background: var(--bg-white);
            border-top: 1px solid var(--border);
            padding: 16px 0;
        }
        
        .mobile-menu.open {
            display: block;
        }
        
        .mobile-menu .container-custom {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        
        .mobile-menu .nav-link-item {
            display: block;
            padding: 12px 16px;
            font-size: 1rem;
        }
        
        /* Hero Section */
        .category-hero {
            background: linear-gradient(135deg, #1a56db 0%, #0f3a8c 100%);
            color: #fff;
            padding: var(--spacing-xl) 0;
            position: relative;
            overflow: hidden;
        }
        
        .category-hero::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 400px;
            height: 400px;
            background: rgba(255,255,255,0.05);
            border-radius: 50%;
        }
        
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -150px;
            left: 20%;
            width: 500px;
            height: 500px;
            background: rgba(255,255,255,0.03);
            border-radius: 50%;
        }
        
        .category-hero .container-custom {
            position: relative;
            z-index: 1;
        }
        
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,255,255,0.15);
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            margin-bottom: 20px;
            backdrop-filter: blur(10px);
        }
        
        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        
        .hero-subtitle {
            font-size: 1.2rem;
            color: rgba(255,255,255,0.85);
            max-width: 650px;
            line-height: 1.7;
            margin-bottom: 32px;
        }
        
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        
        .btn-hero-primary {
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            padding: 14px 32px;
            border-radius: 10px;
            font-size: 1.05rem;
            border: none;
            transition: var(--transition);
        }
        
        .btn-hero-primary:hover {
            background: #f0f4ff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0,0,0,0.2);
        }
        
        .btn-hero-outline {
            background: transparent;
            color: #fff;
            font-weight: 600;
            padding: 14px 28px;
            border-radius: 10px;
            font-size: 1.05rem;
            border: 2px solid rgba(255,255,255,0.5);
            transition: var(--transition);
        }
        
        .btn-hero-outline:hover {
            background: rgba(255,255,255,0.1);
            border-color: #fff;
            color: #fff;
        }
        
        /* Stats bar */
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 40px;
            flex-wrap: wrap;
        }
        
        .hero-stat-item {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .hero-stat-icon {
            width: 48px;
            height: 48px;
            background: rgba(255,255,255,0.15);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
        }
        
        .hero-stat-number {
            font-size: 1.5rem;
            font-weight: 800;
            line-height: 1.2;
        }
        
        .hero-stat-label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.7);
        }
        
        /* Main content sections */
        .section {
            padding: var(--spacing-xl) 0;
        }
        
        .section-title {
            font-size: 1.9rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text);
            letter-spacing: -0.3px;
        }
        
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 700px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        
        .section-subtitle {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text);
        }
        
        /* Process Steps */
        .steps-container {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 32px;
        }
        
        .step-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            border: 1px solid var(--border);
            transition: var(--transition);
            position: relative;
        }
        
        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--primary);
        }
        
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            border-radius: 50%;
            margin-bottom: 16px;
        }
        
        .step-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }
        
        .step-desc {
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.6;
        }
        
        /* Feature cards with images */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        
        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        
        .feature-card-img {
            height: 220px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        
        .feature-card-img .tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--accent);
            color: #fff;
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 700;
        }
        
        .feature-card-body {
            padding: 24px;
        }
        
        .feature-card-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }
        
        .feature-card-text {
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        
        .feature-card-link {
            font-weight: 600;
            color: var(--primary);
            font-size: 0.95rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        
        .feature-card-link:hover {
            color: var(--primary-dark);
        }
        
        /* Info list */
        .info-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .info-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 14px 0;
            border-bottom: 1px solid var(--border-light);
            font-size: 1rem;
            color: var(--text-light);
            line-height: 1.6;
        }
        
        .info-list li:last-child {
            border-bottom: none;
        }
        
        .info-list-icon {
            width: 32px;
            height: 32px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        
        /* FAQ */
        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }
        
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }
        
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        
        .faq-question {
            padding: 20px 24px;
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            background: var(--bg-white);
            border: none;
            width: 100%;
            text-align: left;
        }
        
        .faq-question:hover {
            color: var(--primary);
        }
        
        .faq-question i {
            transition: var(--transition);
            color: var(--text-muted);
        }
        
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }
        
        .faq-item.active .faq-answer {
            max-height: 400px;
        }
        
        .faq-answer-content {
            padding: 0 24px 20px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        
        /* CTA Section */
        .cta-section {
            background: var(--primary);
            color: #fff;
            padding: var(--spacing-xl) 0;
            text-align: center;
        }
        
        .cta-title {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }
        
        .cta-text {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.85);
            max-width: 600px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        
        .btn-cta {
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            padding: 14px 36px;
            border-radius: 10px;
            font-size: 1.05rem;
            border: none;
            transition: var(--transition);
        }
        
        .btn-cta:hover {
            background: #f0f4ff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0,0,0,0.2);
        }
        
        /* Footer */
        .site-footer {
            background: #0f1a2e;
            color: #b0c0d8;
            padding: var(--spacing-xl) 0 32px;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .footer-brand h3 {
            color: #fff;
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.4;
        }
        
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: #8a9ab8;
        }
        
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .footer-col ul li {
            margin-bottom: 10px;
        }
        
        .footer-col ul a {
            color: #8a9ab8;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        
        .footer-col ul a:hover {
            color: #fff;
        }
        
        .footer-badge-18 {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255,255,255,0.1);
            color: #ffd700;
            padding: 8px 14px;
            border-radius: 6px;
            font-size: 0.85rem;
            font-weight: 600;
        }
        
        .footer-legal {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: #6a7a95;
        }
        
        /* FAB */
        .fab-support {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 999;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            border: none;
            cursor: pointer;
            box-shadow: 0 6px 20px rgba(26,86,219,0.4);
            transition: var(--transition);
            opacity: 0.85;
        }
        
        .fab-support:hover {
            transform: scale(1.1);
            opacity: 1;
            box-shadow: 0 10px 30px rgba(26,86,219,0.5);
        }
        
        .fab-support:active {
            transform: scale(0.95);
        }
        
        .fab-support .notification-dot {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 14px;
            height: 14px;
            background: #ff3333;
            border-radius: 50%;
            border: 2px solid #fff;
        }
        
        /* Responsive */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 2.2rem;
            }
            
            .steps-container {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .feature-grid {
                grid-template-columns: 1fr 1fr;
            }
            
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        
        @media (max-width: 768px) {
            .nav-links-desktop {
                display: none;
            }
            
            .navbar-toggler-custom {
                display: flex;
            }
            
            .navbar-custom {
                height: 64px;
            }
            
            .hero-title {
                font-size: 1.8rem;
            }
            
            .hero-subtitle {
                font-size: 1.05rem;
            }
            
            .hero-stats {
                gap: 20px;
            }
            
            .steps-container {
                grid-template-columns: 1fr;
            }
            
            .feature-grid {
                grid-template-columns: 1fr;
            }
            
            .section {
                padding: var(--spacing-lg) 0;
            }
            
            .section-title {
                font-size: 1.5rem;
            }
            
            .cta-title {
                font-size: 1.5rem;
            }
            
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            
            .footer-legal {
                flex-direction: column;
                text-align: center;
            }
        }
        
        @media (max-width: 520px) {
            .container-custom {
                padding: 0 16px;
            }
            
            .hero-title {
                font-size: 1.5rem;
            }
            
            .hero-actions {
                flex-direction: column;
            }
            
            .btn-hero-primary,
            .btn-hero-outline {
                width: 100%;
                text-align: center;
            }
            
            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
            
            .btn-login-text {
                display: none;
            }
            
            .nav-actions {
                gap: 8px;
            }
            
            .btn-signup-solid {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
            
            .fab-support {
                left: 16px;
                bottom: 80px;
                width: 48px;
                height: 48px;
            }
        }

/* roulang page: article */
:root {
            --primary-blue: #0d47a1;
            --primary-blue-dark: #08306b;
            --primary-blue-light: #e3edf7;
            --accent-gold: #f59e0b;
            --accent-gold-light: #fbbf24;
            --bg-white: #ffffff;
            --bg-soft: #f4f8fb;
            --bg-panel: #f9fbfd;
            --text-main: #102a43;
            --text-body: #486581;
            --text-muted: #829ab1;
            --text-white: #ffffff;
            --border-light: #d9e2ec;
            --border-blue: #b6c8da;
            --shadow-sm: 0 2px 8px rgba(13, 71, 161, 0.06);
            --shadow-md: 0 6px 18px rgba(13, 71, 161, 0.1);
            --shadow-lg: 0 12px 32px rgba(13, 71, 161, 0.14);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --transition: 0.25s ease;
            --font-main: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }

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

        body {
            font-family: var(--font-main);
            background: var(--bg-white);
            color: var(--text-main);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

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

        .container-custom {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ========== HEADER / NAVBAR ========== */
        .site-header {
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
        }

        .navbar-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
            gap: 20px;
        }

        .navbar-brand-custom {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--primary-blue-dark);
            white-space: nowrap;
        }

        .navbar-brand-custom:hover {
            color: var(--accent-gold);
        }

        .brand-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: 1.2rem;
            box-shadow: var(--shadow-sm);
            flex-shrink: 0;
        }

        .nav-links-desktop {
            display: flex;
            align-items: center;
            gap: 28px;
            margin-left: auto;
            margin-right: 20px;
        }

        .nav-link-item {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-body);
            padding: 8px 0;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition);
        }

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

        .nav-link-item:hover,
        .nav-link-item.active {
            color: var(--primary-blue);
        }

        .nav-link-item:hover::after,
        .nav-link-item.active::after {
            width: 100%;
        }

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

        .btn-login-text {
            background: transparent;
            border: none;
            color: var(--primary-blue);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 8px 14px;
            transition: color var(--transition);
        }

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

        .btn-signup-solid {
            background: var(--primary-blue);
            border: none;
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            padding: 10px 22px;
            border-radius: 50px;
            box-shadow: var(--shadow-sm);
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        }

        .btn-signup-solid:hover {
            background: var(--primary-blue-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .navbar-toggler-custom {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--primary-blue);
            padding: 4px 8px;
        }

        .mobile-menu {
            display: none;
            background: #fff;
            border-top: 1px solid var(--border-light);
            padding: 16px 0;
            box-shadow: var(--shadow-md);
        }

        .mobile-menu.open {
            display: block;
        }

        .mobile-menu .nav-link-item {
            display: block;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-light);
        }

        .mobile-menu .nav-link-item:last-child {
            border-bottom: none;
        }

        /* ========== ARTICLE HERO BANNER ========== */
        .article-banner {
            background: linear-gradient(135deg, var(--primary-blue-dark) 0%, var(--primary-blue) 60%, #1a5fbf 100%);
            padding: 56px 0 48px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .article-banner::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 360px;
            height: 360px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }

        .article-banner::after {
            content: '';
            position: absolute;
            bottom: -140px;
            left: -100px;
            width: 420px;
            height: 420px;
            background: rgba(245, 158, 11, 0.1);
            border-radius: 50%;
            pointer-events: none;
        }

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

        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .article-breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
        }

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

        .article-breadcrumb i {
            font-size: 0.7rem;
        }

        .article-banner h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            max-width: 800px;
            letter-spacing: -0.01em;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.9rem;
        }

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

        .article-meta i {
            color: var(--accent-gold-light);
        }

        .article-category-badge {
            background: var(--accent-gold);
            color: var(--text-main);
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            display: inline-block;
        }

        /* ========== ARTICLE CONTENT ========== */
        .article-main {
            padding: 56px 0 64px;
            background: var(--bg-white);
        }

        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 320px;
            gap: 48px;
            align-items: start;
        }

        .article-body {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            box-shadow: var(--shadow-sm);
            font-size: 1.05rem;
            color: var(--text-body);
            line-height: 1.75;
        }

        .article-body h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-main);
            margin-top: 32px;
            margin-bottom: 16px;
            line-height: 1.35;
        }

        .article-body h3 {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--text-main);
            margin-top: 24px;
            margin-bottom: 12px;
        }

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

        .article-body ul,
        .article-body ol {
            margin-bottom: 20px;
            padding-left: 24px;
        }

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

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

        .article-body blockquote {
            border-left: 4px solid var(--accent-gold);
            background: var(--bg-soft);
            padding: 20px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 24px 0;
            color: var(--text-main);
            font-style: italic;
        }

        .article-not-found {
            text-align: center;
            padding: 80px 24px;
        }

        .article-not-found i {
            font-size: 4rem;
            color: var(--border-blue);
            margin-bottom: 24px;
        }

        .article-not-found h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

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

        .btn-primary-custom {
            background: var(--primary-blue);
            border: none;
            color: #fff;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 50px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: background var(--transition), transform var(--transition);
        }

        .btn-primary-custom:hover {
            background: var(--primary-blue-dark);
            transform: translateY(-2px);
            color: #fff;
        }

        /* ========== SIDEBAR ========== */
        .article-sidebar {
            position: sticky;
            top: 90px;
        }

        .sidebar-widget {
            background: var(--bg-panel);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 24px;
            margin-bottom: 24px;
            box-shadow: var(--shadow-sm);
        }

        .sidebar-widget h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-widget h4 i {
            color: var(--accent-gold);
        }

        .sidebar-game-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            transition: transform var(--transition);
        }

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

        .sidebar-game-item:hover {
            transform: translateX(4px);
        }

        .sidebar-game-icon {
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, var(--primary-blue-light), #fff);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-blue);
            font-size: 1.1rem;
            flex-shrink: 0;
            border: 1px solid var(--border-light);
        }

        .sidebar-game-info h5 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-main);
            margin: 0 0 2px;
        }

        .sidebar-game-info span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .sidebar-tip {
            background: linear-gradient(135deg, #fff8e6, #fff3cd);
            border: 1px solid #fce4a6;
            border-radius: var(--radius-sm);
            padding: 14px 16px;
            margin-top: 12px;
            font-size: 0.9rem;
            color: #7c5c00;
        }

        .sidebar-tip i {
            color: var(--accent-gold);
            margin-right: 6px;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-blue-dark), var(--primary-blue));
            padding: 64px 0;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -100px;
            right: -60px;
            width: 340px;
            height: 340px;
            background: rgba(245, 158, 11, 0.12);
            border-radius: 50%;
            pointer-events: none;
        }

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

        .cta-text h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .cta-text p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.05rem;
            max-width: 560px;
            margin-bottom: 0;
        }

        .btn-cta-gold {
            background: var(--accent-gold);
            border: none;
            color: var(--text-main);
            font-weight: 700;
            padding: 16px 36px;
            border-radius: 50px;
            font-size: 1.05rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 8px 20px rgba(245, 158, 11, 0.35);
            transition: background var(--transition), transform var(--transition);
            white-space: nowrap;
        }

        .btn-cta-gold:hover {
            background: var(--accent-gold-light);
            transform: translateY(-3px);
            color: var(--text-main);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0b1f3a;
            color: #cbd5e1;
            padding: 56px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            color: #fff;
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: #94a3b8;
            line-height: 1.7;
        }

        .footer-badge-18 {
            background: rgba(245, 158, 11, 0.15);
            border: 1px solid rgba(245, 158, 11, 0.4);
            color: var(--accent-gold-light);
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

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

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

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

        .footer-col ul li a {
            color: #94a3b8;
            font-size: 0.9rem;
            transition: color var(--transition);
        }

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

        .footer-legal {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: #64748b;
        }

        /* ========== FAB ========== */
        .fab-left {
            position: fixed;
            left: 24px;
            bottom: 24px;
            z-index: 999;
            width: 56px;
            height: 56px;
            background: var(--primary-blue-dark);
            border: 2px solid var(--accent-gold);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.4rem;
            box-shadow: 0 4px 20px rgba(245, 158, 11, 0.3);
            transition: transform var(--transition), opacity var(--transition);
            opacity: 0.85;
            animation: fabFloat 3s ease-in-out infinite;
        }

        .fab-left:hover {
            transform: scale(1.1);
            opacity: 1;
        }

        .fab-left .notification-dot {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 12px;
            height: 12px;
            background: #ef4444;
            border-radius: 50%;
            border: 2px solid #fff;
            animation: blinkDot 1.4s infinite;
        }

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

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

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .article-sidebar {
                position: static;
            }

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

            .article-banner h1 {
                font-size: 2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links-desktop {
                display: none;
            }

            .navbar-toggler-custom {
                display: block;
            }

            .nav-actions .btn-login-text,
            .nav-actions .btn-signup-solid {
                display: inline-block;
            }

            .article-banner {
                padding: 40px 0 36px;
            }

            .article-banner h1 {
                font-size: 1.7rem;
            }

            .article-body {
                padding: 28px 22px;
                font-size: 1rem;
            }

            .cta-content {
                flex-direction: column;
                text-align: center;
            }

            .cta-text p {
                margin: 0 auto;
            }

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

            .footer-legal {
                flex-direction: column;
                text-align: center;
            }
        }

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

            .article-banner h1 {
                font-size: 1.45rem;
            }

            .article-body {
                padding: 22px 16px;
                border-radius: var(--radius-md);
            }

            .article-meta {
                gap: 12px;
                font-size: 0.8rem;
            }

            .nav-actions {
                gap: 8px;
            }

            .btn-signup-solid {
                padding: 8px 16px;
                font-size: 0.8rem;
            }

            .btn-login-text {
                padding: 6px 8px;
                font-size: 0.8rem;
            }

            .fab-left {
                width: 50px;
                height: 50px;
                left: 16px;
                bottom: 16px;
                font-size: 1.2rem;
            }
        }

/* roulang page: category2 */
:root {
            --color-bg: #f5f8ff;
            --color-surface: #ffffff;
            --color-primary: #0052ff;
            --color-primary-dark: #003eb8;
            --color-primary-light: #e8efff;
            --color-accent: #00d4ff;
            --color-accent-soft: #e0f8ff;
            --color-text: #1a2333;
            --color-text-muted: #5b6b82;
            --color-text-soft: #8a97a8;
            --color-border: #dce3ee;
            --color-border-light: #eef2f8;
            --color-success: #00c853;
            --color-warning: #ffab00;
            --color-danger: #ff3d71;
            --color-footer-bg: #0d1526;
            --color-footer-text: #a3b0c4;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --shadow-sm: 0 2px 8px rgba(10, 20, 40, 0.05);
            --shadow-md: 0 6px 24px rgba(10, 20, 40, 0.08);
            --shadow-lg: 0 16px 48px rgba(10, 20, 40, 0.12);
            --shadow-primary: 0 8px 28px rgba(0, 82, 255, 0.28);
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --font-heading: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }

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

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

        body {
            font-family: var(--font-body);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.65;
            font-size: 16px;
            overflow-x: hidden;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text);
            letter-spacing: -0.02em;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button:focus-visible, a:focus-visible {
            outline: 3px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container-custom {
            max-width: 1180px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== HEADER / NAV ===== */
        .site-header {
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .navbar-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }
        .navbar-brand-custom {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--color-text);
            white-space: nowrap;
        }
        .navbar-brand-custom:hover {
            color: var(--color-primary);
        }
        .brand-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .nav-links-desktop {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
        }
        .nav-link-item {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--color-text-muted);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-link-item:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
        }
        .nav-link-item.active {
            color: var(--color-primary);
            background: var(--color-primary-light);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-login-text {
            background: none;
            border: none;
            padding: 8px 18px;
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--color-text);
            cursor: pointer;
            border-radius: 30px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .btn-login-text:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
        }
        .btn-signup-solid {
            background: var(--color-primary);
            color: #fff;
            border: none;
            padding: 10px 22px;
            border-radius: 30px;
            font-size: 0.92rem;
            font-weight: 700;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-primary);
            white-space: nowrap;
        }
        .btn-signup-solid:hover {
            background: var(--color-primary-dark);
            box-shadow: 0 10px 32px rgba(0, 82, 255, 0.38);
            transform: translateY(-1px);
        }
        .navbar-toggler-custom {
            display: none;
            background: var(--color-primary-light);
            border: none;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            color: var(--color-primary);
            font-size: 1.2rem;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
        }
        .navbar-toggler-custom:hover {
            background: #d5e2ff;
        }
        .mobile-menu {
            display: none;
            background: #fff;
            border-top: 1px solid var(--color-border-light);
            padding: 16px 0;
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu .container-custom {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-menu .nav-link-item {
            display: block;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
        }

        /* ===== PAGE HERO ===== */
        .page-hero {
            background: linear-gradient(135deg, #f0f5ff 0%, #e8f4ff 50%, #eaf9ff 100%);
            padding: 70px 0 60px;
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 82, 255, 0.12) 0%, transparent 70%);
            border-radius: 50%;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -150px;
            left: -100px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
            border-radius: 50%;
        }
        .page-hero .container-custom {
            position: relative;
            z-index: 2;
        }
        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--color-text-soft);
            margin-bottom: 18px;
            flex-wrap: wrap;
        }
        .breadcrumb-custom a {
            color: var(--color-text-muted);
            font-weight: 500;
        }
        .breadcrumb-custom a:hover {
            color: var(--color-primary);
        }
        .breadcrumb-sep {
            color: var(--color-text-soft);
        }
        .page-hero h1 {
            font-size: 2.5rem;
            margin-bottom: 16px;
            max-width: 700px;
        }
        .page-hero .hero-subtitle {
            font-size: 1.1rem;
            color: var(--color-text-muted);
            max-width: 620px;
            margin-bottom: 28px;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .hero-meta-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: 30px;
            padding: 8px 16px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-text-muted);
        }
        .hero-meta-badge i {
            color: var(--color-primary);
        }

        /* ===== SECTION STYLES ===== */
        .section-padding {
            padding: 70px 0;
        }
        .section-padding-sm {
            padding: 50px 0;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-primary-light);
            color: var(--color-primary);
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            padding: 6px 16px;
            border-radius: 30px;
            margin-bottom: 14px;
        }
        .section-title {
            font-size: 1.8rem;
            margin-bottom: 14px;
            max-width: 640px;
        }
        .section-desc {
            font-size: 1.02rem;
            color: var(--color-text-muted);
            max-width: 580px;
            margin-bottom: 36px;
        }

        /* ===== COMPARISON TABLE (Hero pattern) ===== */
        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-top: 32px;
            align-items: stretch;
        }
        .comparison-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            position: relative;
        }
        .comparison-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .comparison-card.recommended {
            border: 2px solid var(--color-primary);
            box-shadow: var(--shadow-primary);
            background: linear-gradient(180deg, #ffffff 0%, #f5f9ff 100%);
        }
        .comparison-card.recommended::before {
            content: 'Khuyên dùng';
            position: absolute;
            top: -14px;
            right: 24px;
            background: var(--color-primary);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 5px 16px;
            border-radius: 30px;
            letter-spacing: 0.02em;
        }
        .comparison-card h3 {
            font-size: 1.25rem;
            margin-bottom: 8px;
        }
        .comparison-card .card-price {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--color-primary);
            margin-bottom: 16px;
        }
        .comparison-card ul {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
        }
        .comparison-card ul li {
            padding: 7px 0;
            font-size: 0.92rem;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .comparison-card ul li i {
            color: var(--color-success);
            font-size: 0.85rem;
        }
        .btn-cta-primary {
            background: var(--color-primary);
            color: #fff;
            border: none;
            padding: 13px 28px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-primary);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            width: 100%;
            justify-content: center;
        }
        .btn-cta-primary:hover {
            background: var(--color-primary-dark);
            box-shadow: 0 12px 36px rgba(0, 82, 255, 0.4);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-cta-outline {
            background: transparent;
            color: var(--color-primary);
            border: 2px solid var(--color-primary);
            padding: 12px 28px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            width: 100%;
            justify-content: center;
        }
        .btn-cta-outline:hover {
            background: var(--color-primary-light);
            border-color: var(--color-primary-dark);
            color: var(--color-primary-dark);
        }

        /* ===== STEPS ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 20px;
            margin-top: 30px;
        }
        .step-item {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 26px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            position: relative;
        }
        .step-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .step-number {
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            border-radius: 50%;
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }
        .step-item h3 {
            font-size: 1.05rem;
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin: 0;
        }

        /* ===== TIPS / ALERTS ===== */
        .tip-box {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 24px;
            border-left: 4px solid var(--color-primary);
            box-shadow: var(--shadow-sm);
            margin-bottom: 18px;
        }
        .tip-box.warning {
            border-left-color: var(--color-warning);
            background: #fffbf0;
        }
        .tip-box.success {
            border-left-color: var(--color-success);
            background: #f0fff4;
        }
        .tip-box h4 {
            font-size: 1rem;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .tip-box p {
            font-size: 0.92rem;
            color: var(--color-text-muted);
            margin: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 720px;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            text-align: left;
            transition: all var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-question i {
            transition: transform var(--transition-base);
            color: var(--color-text-soft);
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .faq-question.active i {
            transform: rotate(180deg);
            color: var(--color-primary);
        }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.92rem;
            color: var(--color-text-muted);
            display: none;
        }
        .faq-answer.open {
            display: block;
        }

        /* ===== CTA SECTION ===== */
        .cta-section {
            background: linear-gradient(135deg, #e8f0ff 0%, #dff4ff 50%, #e8f0ff 100%);
            border-radius: var(--radius-xl);
            padding: 50px 40px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -60px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(0, 82, 255, 0.15) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-section h2 {
            font-size: 1.7rem;
            margin-bottom: 12px;
            position: relative;
            z-index: 2;
        }
        .cta-section p {
            color: var(--color-text-muted);
            max-width: 500px;
            margin-bottom: 24px;
            position: relative;
            z-index: 2;
        }
        .cta-section .btn-cta-primary {
            width: auto;
            position: relative;
            z-index: 2;
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: var(--color-footer-bg);
            color: var(--color-footer-text);
            padding: 60px 0 30px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand h3 {
            color: #fff;
            font-size: 1.2rem;
            margin-bottom: 12px;
            line-height: 1.5;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--color-footer-text);
            line-height: 1.7;
        }
        .footer-badge-18 {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 30px;
            padding: 6px 14px;
            font-size: 0.8rem;
            font-weight: 600;
            color: #e0e6f0;
        }
        .footer-badge-18 i {
            color: #00d4ff;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: var(--color-footer-text);
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-legal {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: space-between;
            font-size: 0.8rem;
            color: rgba(163, 176, 196, 0.8);
        }

        /* ===== FAB ===== */
        .fab-cyber {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 1050;
            display: flex;
            align-items: center;
            gap: 10px;
            background: rgba(10, 20, 40, 0.8);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            border-radius: 50px;
            padding: 10px 18px;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.35);
            animation: fab-breathe 3s ease-in-out infinite;
            position: relative;
        }
        .fab-cyber::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50px;
            padding: 2px;
            background: linear-gradient(135deg, #00d4ff, #0052ff);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            pointer-events: none;
        }
        .fab-cyber:hover {
            opacity: 1;
            box-shadow: 0 0 32px rgba(0, 212, 255, 0.55);
            transform: scale(1.06);
        }
        .fab-cyber:active {
            transform: scale(0.95);
        }
        .fab-cyber i {
            font-size: 1.2rem;
            color: #00d4ff;
        }
        .fab-cyber .fab-text {
            font-size: 0.85rem;
            font-weight: 600;
            color: #fff;
            white-space: nowrap;
        }
        @keyframes fab-breathe {
            0%, 100% { opacity: 0.7; }
            50% { opacity: 0.9; }
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .nav-links-desktop {
                gap: 2px;
            }
            .nav-link-item {
                padding: 8px 12px;
                font-size: 0.85rem;
            }
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 768px) {
            .container-custom {
                padding-left: 18px;
                padding-right: 18px;
            }
            .navbar-custom {
                height: 64px;
            }
            .nav-links-desktop {
                display: none;
            }
            .navbar-toggler-custom {
                display: flex;
            }
            .page-hero {
                padding: 50px 0 45px;
            }
            .page-hero h1 {
                font-size: 1.9rem;
            }
            .comparison-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .cta-section {
                padding: 36px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-legal {
                flex-direction: column;
                gap: 8px;
            }
            .fab-cyber {
                left: 16px;
                bottom: 80px;
                padding: 8px 14px;
            }
            .fab-cyber .fab-text {
                display: none;
            }
        }
        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.6rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .btn-signup-solid {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
            .btn-login-text {
                padding: 6px 12px;
                font-size: 0.85rem;
            }
            .comparison-card {
                padding: 22px;
            }
        }