/* roulang page: index */
:root {
            --bg-primary: #030712;
            --bg-secondary: #081229;
            --bg-card: #0B1B3A;
            --accent-primary: #2563EB;
            --accent-secondary: #38BDF8;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-accent: #60A5FA;
            --border-color: rgba(56, 189, 248, 0.15);
            --shadow-glow: 0 0 20px rgba(6, 182, 212, 0.45);
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-2xl: 80px;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s ease;
        }

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

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 24px;
                padding-right: 24px;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        @media (min-width: 1280px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background-color: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(56, 189, 248, 0.12);
            transition: background-color 0.3s ease;
        }

        .site-header.scrolled {
            background-color: rgba(3, 7, 18, 0.95);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            gap: 16px;
        }

        .nav-logo {
            font-weight: 800;
            font-size: 1.05rem;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 260px;
        }

        @media (min-width: 768px) {
            .nav-logo {
                font-size: 1.15rem;
                max-width: 400px;
            }
        }

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

        .nav-logo .flag-icon {
            color: var(--accent-secondary);
        }

        .nav-desktop-menu {
            display: none;
            align-items: center;
            gap: 8px;
        }

        @media (min-width: 1024px) {
            .nav-desktop-menu {
                display: flex;
            }
        }

        .nav-link {
            padding: 8px 14px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: all 0.3s ease;
            white-space: nowrap;
            position: relative;
        }

        .nav-link:hover {
            color: var(--accent-secondary);
            background-color: rgba(56, 189, 248, 0.08);
        }

        .nav-link.active {
            color: var(--accent-secondary);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
            border-radius: 2px;
        }

        .nav-auth-btns {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .nav-login-btn {
            padding: 8px 14px;
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--accent-secondary);
            border: 1px solid rgba(56, 189, 248, 0.35);
            border-radius: var(--radius-sm);
            transition: all 0.3s ease;
            white-space: nowrap;
            background: transparent;
        }

        .nav-login-btn:hover {
            background-color: rgba(56, 189, 248, 0.12);
            border-color: var(--accent-secondary);
        }

        .nav-signup-btn {
            padding: 8px 16px;
            font-size: 0.82rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
            box-shadow: 0 0 15px rgba(37, 99, 235, 0.4);
        }

        .nav-signup-btn:hover {
            box-shadow: 0 0 25px rgba(56, 189, 248, 0.55);
            transform: translateY(-1px);
        }

        .nav-mobile-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: transparent;
            border: 1px solid rgba(56, 189, 248, 0.2);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            cursor: pointer;
            font-size: 1.1rem;
            transition: all 0.3s ease;
            flex-shrink: 0;
        }

        .nav-mobile-toggle:hover {
            background-color: rgba(56, 189, 248, 0.1);
        }

        @media (min-width: 1024px) {
            .nav-mobile-toggle {
                display: none;
            }
        }

        .mobile-menu {
            display: none;
            padding: 0 16px 16px 16px;
            background-color: rgba(3, 7, 18, 0.98);
            border-bottom: 1px solid rgba(56, 189, 248, 0.12);
        }

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

        .mobile-menu .nav-link {
            display: block;
            padding: 12px 0;
            font-size: 0.95rem;
            border-bottom: 1px solid rgba(56, 189, 248, 0.06);
        }

        .mobile-menu .nav-auth-btns {
            display: flex;
            gap: 10px;
            margin-top: 12px;
        }

        .mobile-menu .nav-login-btn,
        .mobile-menu .nav-signup-btn {
            flex: 1;
            text-align: center;
            padding: 10px;
            font-size: 0.9rem;
        }

        /* Hero */
        .hero-section {
            position: relative;
            min-height: 560px;
            display: flex;
            align-items: center;
            padding: 120px 0 60px;
            background-image: url('/assets/images/24839588e4ad9096.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(3, 7, 18, 0.82) 0%, rgba(3, 7, 18, 0.65) 40%, rgba(3, 7, 18, 0.88) 100%);
            z-index: 1;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 30%, rgba(37, 99, 235, 0.25) 0%, transparent 60%);
            z-index: 1;
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--accent-secondary);
            background: rgba(56, 189, 248, 0.12);
            border: 1px solid rgba(56, 189, 248, 0.3);
            border-radius: 100px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            margin-bottom: 20px;
        }

        .hero-title {
            font-size: 2rem;
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: -0.03em;
            margin-bottom: 20px;
            color: var(--text-primary);
        }

        @media (min-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
        }

        @media (min-width: 1024px) {
            .hero-title {
                font-size: 3rem;
            }
        }

        .hero-title .highlight {
            background: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 0.95rem;
            line-height: 1.7;
            color: rgba(248, 250, 252, 0.85);
            margin-bottom: 28px;
            max-width: 620px;
        }

        @media (min-width: 768px) {
            .hero-desc {
                font-size: 1rem;
            }
        }

        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }

        .hero-primary-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 28px;
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border-radius: var(--radius-md);
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 0 25px rgba(37, 99, 235, 0.45);
        }

        .hero-primary-btn:hover {
            box-shadow: 0 0 40px rgba(56, 189, 248, 0.6);
            transform: translateY(-2px);
        }

        .hero-secondary-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 24px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .hero-secondary-btn:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.3);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

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

        .hero-stat-value {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--accent-secondary);
        }

        .hero-stat-label {
            font-size: 0.78rem;
            color: var(--text-secondary);
            letter-spacing: 0.02em;
        }

        /* Section */
        .section {
            padding: 56px 0;
        }

        @media (min-width: 768px) {
            .section {
                padding: 72px 0;
            }
        }

        @media (min-width: 1024px) {
            .section {
                padding: 88px 0;
            }
        }

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

        .section-alt-deep {
            background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
        }

        .section-header {
            margin-bottom: 36px;
        }

        .section-header.center {
            text-align: center;
        }

        .section-label {
            display: inline-block;
            padding: 6px 14px;
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--accent-secondary);
            background: rgba(56, 189, 248, 0.1);
            border: 1px solid rgba(56, 189, 248, 0.25);
            border-radius: 100px;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 14px;
        }

        .section-title {
            font-size: 1.5rem;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 1.85rem;
            }
        }

        @media (min-width: 1024px) {
            .section-title {
                font-size: 2.1rem;
            }
        }

        .section-desc {
            font-size: 0.9rem;
            line-height: 1.7;
            color: var(--text-secondary);
            max-width: 640px;
        }

        .section-header.center .section-desc {
            margin-left: auto;
            margin-right: auto;
        }

        /* Cards */
        .card-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        @media (min-width: 640px) {
            .card-grid.cols-2 {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .card-grid.cols-3 {
                grid-template-columns: repeat(3, 1fr);
            }
            .card-grid.cols-4 {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        .glass-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: all 0.35s ease;
            position: relative;
            overflow: hidden;
        }

        .glass-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
            opacity: 0;
            transition: opacity 0.35s ease;
            border-radius: 2px 2px 0 0;
        }

        .glass-card:hover {
            border-color: rgba(56, 189, 248, 0.35);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4), 0 0 20px rgba(6, 182, 212, 0.15);
            transform: translateY(-3px);
        }

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

        .glass-card .card-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            font-size: 1.3rem;
            color: var(--accent-secondary);
            background: rgba(56, 189, 248, 0.12);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
        }

        .glass-card .card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .glass-card .card-desc {
            font-size: 0.85rem;
            line-height: 1.6;
            color: var(--text-secondary);
        }

        /* Table */
        .table-wrapper {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }

        .data-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 700px;
        }

        .data-table th {
            padding: 14px 16px;
            font-size: 0.72rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            color: var(--accent-secondary);
            background: rgba(56, 189, 248, 0.07);
            border-bottom: 1px solid rgba(56, 189, 248, 0.2);
            text-align: left;
            white-space: nowrap;
        }

        .data-table td {
            padding: 14px 16px;
            font-size: 0.85rem;
            color: var(--text-primary);
            border-bottom: 1px solid rgba(56, 189, 248, 0.08);
            white-space: nowrap;
        }

        .data-table tbody tr {
            transition: background-color 0.25s ease;
        }

        .data-table tbody tr:hover {
            background-color: rgba(56, 189, 248, 0.04);
        }

        .data-table .match-name {
            font-weight: 600;
        }

        .data-table .league-tag {
            display: inline-block;
            padding: 3px 10px;
            font-size: 0.7rem;
            font-weight: 500;
            color: var(--slate-ice);
            background: rgba(148, 163, 184, 0.12);
            border-radius: 100px;
        }

        .data-table .odds-over {
            color: #4ADE80;
            font-weight: 600;
        }

        .data-table .odds-under {
            color: #F87171;
            font-weight: 600;
        }

        /* Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            counter-reset: step-counter;
        }

        @media (min-width: 768px) {
            .steps-grid.cols-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .steps-grid.cols-4 {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        .step-item {
            position: relative;
            padding: 24px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            transition: all 0.3s ease;
        }

        .step-item::before {
            counter-increment: step-counter;
            content: counter(step-counter);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            font-size: 0.85rem;
            font-weight: 800;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border-radius: 50%;
            margin-bottom: 14px;
        }

        .step-item:hover {
            border-color: rgba(56, 189, 248, 0.35);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
        }

        .step-item .step-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .step-item .step-desc {
            font-size: 0.82rem;
            line-height: 1.6;
            color: var(--text-secondary);
        }

        /* List */
        .custom-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .custom-list li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 10px;
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .custom-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            top: 2px;
            color: var(--accent-secondary);
            font-weight: 700;
            font-size: 0.8rem;
        }

        /* CTA Banner */
        .cta-banner {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.18), rgba(56, 189, 248, 0.08));
            border: 1px solid rgba(56, 189, 248, 0.3);
            border-radius: var(--radius-xl);
            padding: 32px 24px;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: 16px;
        }

        @media (min-width: 768px) {
            .cta-banner {
                padding: 48px 40px;
            }
        }

        .cta-banner .cta-title {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
        }

        @media (min-width: 768px) {
            .cta-banner .cta-title {
                font-size: 1.6rem;
            }
        }

        .cta-banner .cta-desc {
            font-size: 0.95rem;
            color: var(--text-secondary);
            max-width: 480px;
            line-height: 1.7;
        }

        .cta-banner .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border-radius: var(--radius-md);
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 0 25px rgba(37, 99, 235, 0.45);
        }

        .cta-banner .cta-btn:hover {
            box-shadow: 0 0 40px rgba(56, 189, 248, 0.6);
            transform: translateY(-2px);
        }

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

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-item:hover {
            border-color: rgba(56, 189, 248, 0.3);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            list-style: none;
            gap: 12px;
        }

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

        .faq-item summary::after {
            content: '+';
            font-size: 1.2rem;
            color: var(--accent-secondary);
            font-weight: 400;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }

        .faq-item .faq-answer {
            padding: 0 20px 18px 20px;
            font-size: 0.85rem;
            line-height: 1.7;
            color: var(--text-secondary);
        }

        /* Form */
        .form-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            padding: 28px;
        }

        @media (min-width: 768px) {
            .form-card {
                padding: 36px;
            }
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 14px;
            font-size: 0.88rem;
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(148, 163, 184, 0.25);
            border-radius: var(--radius-sm);
            transition: all 0.3s ease;
            font-family: 'Be Vietnam Pro', sans-serif;
        }

        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--accent-secondary);
            background: rgba(255, 255, 255, 0.07);
            box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.12);
        }

        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }

        .form-submit-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 28px;
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border-radius: var(--radius-md);
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 0 20px rgba(37, 99, 235, 0.4);
        }

        .form-submit-btn:hover {
            box-shadow: 0 0 35px rgba(56, 189, 248, 0.55);
            transform: translateY(-1px);
        }

        /* Badge */
        .badge-tag {
            display: inline-block;
            padding: 4px 10px;
            font-size: 0.68rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            border-radius: 100px;
            color: var(--accent-secondary);
            background: rgba(56, 189, 248, 0.1);
            border: 1px solid rgba(56, 189, 248, 0.25);
        }

        .badge-hot {
            display: inline-block;
            padding: 4px 10px;
            font-size: 0.68rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            border-radius: 100px;
            color: #F87171;
            background: rgba(248, 113, 113, 0.1);
            border: 1px solid rgba(248, 113, 113, 0.3);
        }

        /* Partners */
        .partner-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }

        @media (min-width: 640px) {
            .partner-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .partner-grid {
                grid-template-columns: repeat(6, 1fr);
            }
        }

        .partner-logo {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(148, 163, 184, 0.12);
            border-radius: var(--radius-md);
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--text-secondary);
            text-align: center;
            transition: all 0.3s ease;
        }

        .partner-logo:hover {
            border-color: rgba(56, 189, 248, 0.3);
            color: var(--accent-secondary);
            background: rgba(56, 189, 248, 0.06);
        }

        /* Footer */
        .site-footer {
            background-color: var(--bg-primary);
            border-top: 1px solid rgba(56, 189, 248, 0.12);
            padding: 48px 0 24px;
        }

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

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }
        }

        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1.2fr;
            }
        }

        .footer-brand-name {
            font-size: 0.95rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .footer-brand-desc {
            font-size: 0.82rem;
            line-height: 1.6;
            color: var(--text-secondary);
            max-width: 360px;
        }

        .footer-col-title {
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            color: var(--text-primary);
            margin-bottom: 14px;
        }

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

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links a {
            font-size: 0.82rem;
            color: var(--text-secondary);
            transition: color 0.3s ease;
        }

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

        .footer-bottom {
            padding-top: 20px;
            border-top: 1px solid rgba(56, 189, 248, 0.08);
            display: flex;
            flex-direction: column;
            gap: 10px;
            align-items: center;
            text-align: center;
        }

        @media (min-width: 768px) {
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                text-align: left;
            }
        }

        .footer-copyright {
            font-size: 0.78rem;
            color: var(--text-secondary);
        }

        /* FAB */
        .fab-float {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: #fff;
            background: rgba(7, 7, 13, 0.82);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            border-radius: 16px;
            cursor: pointer;
            transition: all 0.35s ease;
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.35);
            opacity: 0.75;
            animation: fabPulse 3s ease-in-out infinite;
            background-clip: padding-box;
        }

        .fab-float::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 16px;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            z-index: -1;
            opacity: 0.7;
        }

        .fab-float:hover {
            opacity: 1;
            transform: scale(1.08);
            box-shadow: 0 0 30px rgba(6, 182, 212, 0.6);
        }

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

        .fab-float .fab-notification {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 14px;
            height: 14px;
            background: #F43F5E;
            border-radius: 50%;
            border: 2px solid #07070D;
            animation: fabPulse 1.5s ease-in-out infinite;
        }

        @keyframes fabPulse {
            0%, 100% { opacity: 0.75; }
            50% { opacity: 1; box-shadow: 0 0 28px rgba(6, 182, 212, 0.5); }
        }

        /* Responsive helpers */
        @media (max-width: 1023px) {
            .hide-mobile {
                display: none !important;
            }
        }

        @media (min-width: 1024px) {
            .hide-desktop {
                display: none !important;
            }
        }

        /* Animations */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-fadeInUp {
            animation: fadeInUp 0.6s ease forwards;
        }

        .animate-delay-1 {
            animation-delay: 0.15s;
            opacity: 0;
        }
        .animate-delay-2 {
            animation-delay: 0.3s;
            opacity: 0;
        }
        .animate-delay-3 {
            animation-delay: 0.45s;
            opacity: 0;
        }
        .animate-delay-4 {
            animation-delay: 0.6s;
            opacity: 0;
        }

        @keyframes glowBorder {
            0%, 100% { border-color: rgba(56, 189, 248, 0.2); }
            50% { border-color: rgba(56, 189, 248, 0.5); }
        }

        .glow-border-anim {
            animation: glowBorder 3s ease-in-out infinite;
        }

        /* Custom scrollbar */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-primary);
        }
        ::-webkit-scrollbar-thumb {
            background: rgba(56, 189, 248, 0.3);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: rgba(56, 189, 248, 0.5);
        }

/* roulang page: article */
:root {
            --bg-primary: #030712;
            --bg-secondary: #081229;
            --bg-card: #0B1B3A;
            --accent-primary: #2563EB;
            --accent-secondary: #38BDF8;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-accent: #60A5FA;
            --border-color: rgba(56, 189, 248, 0.15);
            --shadow-glow: 0 0 20px rgba(6, 182, 212, 0.45);
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-2xl: 80px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Be Vietnam Pro', sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--accent-secondary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }
        @media (min-width: 768px) {
            .container {
                padding-left: 24px;
                padding-right: 24px;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        @media (min-width: 1280px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background-color: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(56, 189, 248, 0.12);
            transition: background-color 0.3s ease, box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            background-color: rgba(3, 7, 18, 0.95);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            gap: 16px;
        }
        .nav-logo {
            font-weight: 800;
            font-size: 1.05rem;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 260px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        @media (min-width: 768px) {
            .nav-logo {
                font-size: 1.15rem;
                max-width: 400px;
            }
        }
        .nav-logo:hover {
            color: var(--accent-secondary);
        }
        .nav-logo .flag-icon {
            color: var(--accent-secondary);
        }
        .nav-desktop-menu {
            display: none;
            align-items: center;
            gap: 8px;
        }
        @media (min-width: 1024px) {
            .nav-desktop-menu {
                display: flex;
            }
        }
        .nav-link {
            padding: 8px 14px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: all 0.3s ease;
            white-space: nowrap;
            position: relative;
        }
        .nav-link:hover {
            color: var(--accent-secondary);
            background-color: rgba(56, 189, 248, 0.08);
        }
        .nav-link.active {
            color: var(--accent-secondary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
            border-radius: 2px;
        }
        .nav-auth-btns {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .nav-login-btn {
            padding: 8px 14px;
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--accent-secondary);
            border: 1px solid rgba(56, 189, 248, 0.35);
            border-radius: var(--radius-sm);
            transition: all 0.3s ease;
            white-space: nowrap;
            background: transparent;
            cursor: pointer;
        }
        .nav-login-btn:hover {
            background-color: rgba(56, 189, 248, 0.12);
            border-color: var(--accent-secondary);
        }
        .nav-signup-btn {
            padding: 8px 16px;
            font-size: 0.82rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
            box-shadow: 0 0 15px rgba(37, 99, 235, 0.4);
        }
        .nav-signup-btn:hover {
            box-shadow: 0 0 25px rgba(56, 189, 248, 0.55);
            transform: translateY(-1px);
        }
        .nav-mobile-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: transparent;
            border: 1px solid rgba(56, 189, 248, 0.2);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            cursor: pointer;
            font-size: 1.1rem;
            transition: all 0.3s ease;
            flex-shrink: 0;
        }
        .nav-mobile-toggle:hover {
            background-color: rgba(56, 189, 248, 0.1);
            border-color: var(--accent-secondary);
        }
        @media (min-width: 1024px) {
            .nav-mobile-toggle {
                display: none;
            }
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 12px 0 16px;
            border-top: 1px solid rgba(56, 189, 248, 0.1);
            margin-top: 12px;
        }
        .mobile-menu.open {
            display: flex;
        }
        @media (min-width: 1024px) {
            .mobile-menu {
                display: none !important;
            }
        }
        .mobile-menu .nav-link {
            padding: 10px 14px;
            font-size: 0.9rem;
        }
        .mobile-menu .nav-auth-btns {
            flex-direction: column;
            gap: 8px;
            margin-top: 12px;
        }
        .mobile-menu .nav-login-btn,
        .mobile-menu .nav-signup-btn {
            width: 100%;
            text-align: center;
        }

        /* Article Header */
        .article-hero {
            padding-top: 100px;
            padding-bottom: 20px;
            background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.82rem;
            color: var(--text-secondary);
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: var(--text-accent);
            transition: color 0.3s ease;
        }
        .breadcrumb a:hover {
            color: var(--accent-secondary);
        }
        .breadcrumb .separator {
            color: rgba(148, 163, 184, 0.5);
        }
        .breadcrumb .current {
            color: var(--text-primary);
            font-weight: 500;
            max-width: 300px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .article-meta-top {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }
        .article-category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border-radius: 999px;
            box-shadow: 0 0 15px rgba(37, 99, 235, 0.35);
        }
        .article-date-meta {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--text-secondary);
        }
        .article-date-meta i {
            color: var(--accent-secondary);
        }
        .article-h1 {
            font-size: 1.75rem;
            font-weight: 900;
            line-height: 1.3;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            margin-bottom: 20px;
            max-width: 900px;
        }
        @media (min-width: 768px) {
            .article-h1 {
                font-size: 2.25rem;
            }
        }
        @media (min-width: 1024px) {
            .article-h1 {
                font-size: 2.75rem;
            }
        }
        .article-featured-image {
            width: 100%;
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-bottom: 32px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
        }
        .article-featured-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        /* Article Body */
        .article-body-wrapper {
            max-width: 720px;
            margin: 0 auto;
            padding-bottom: 48px;
        }
        .article-content {
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-secondary);
        }
        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.35;
            margin-top: 32px;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }
        .article-content h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
            margin-top: 24px;
            margin-bottom: 12px;
        }
        .article-content p {
            margin-bottom: 16px;
        }
        .article-content ul,
        .article-content ol {
            margin-bottom: 16px;
            padding-left: 24px;
        }
        .article-content ul {
            list-style-type: disc;
        }
        .article-content ol {
            list-style-type: decimal;
        }
        .article-content li {
            margin-bottom: 8px;
        }
        .article-content a {
            color: var(--accent-secondary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-content a:hover {
            color: var(--accent-primary);
        }
        .article-content blockquote {
            border-left: 3px solid var(--accent-secondary);
            padding-left: 20px;
            margin: 24px 0;
            font-style: italic;
            color: var(--text-primary);
            background-color: rgba(56, 189, 248, 0.05);
            padding: 16px 20px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
        }
        .article-content img {
            border-radius: var(--radius-md);
            margin: 24px 0;
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 0.9rem;
            border-radius: var(--radius-md);
            overflow: hidden;
        }
        .article-content th {
            background-color: var(--bg-card);
            color: var(--text-primary);
            font-weight: 700;
            padding: 12px 16px;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
        }
        .article-content td {
            padding: 12px 16px;
            border-bottom: 1px solid rgba(56, 189, 248, 0.08);
            color: var(--text-secondary);
        }
        .article-content tr:last-child td {
            border-bottom: none;
        }

        /* Article Not Found */
        .article-not-found {
            text-align: center;
            padding: 80px 20px;
            background-color: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
        }
        .article-not-found h2 {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 0 15px rgba(37, 99, 235, 0.4);
        }
        .btn-primary:hover {
            box-shadow: 0 0 25px rgba(56, 189, 248, 0.55);
            transform: translateY(-1px);
        }

        /* Summary Section */
        .summary-section {
            padding: 48px 0;
        }
        .summary-card {
            background: linear-gradient(135deg, rgba(11, 27, 58, 0.9), rgba(8, 18, 41, 0.9));
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 24px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card);
        }
        .summary-card h2 {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .summary-card h2 i {
            color: var(--accent-secondary);
            font-size: 1.1rem;
        }
        .summary-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .summary-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        .summary-list li i {
            color: var(--accent-secondary);
            margin-top: 4px;
            flex-shrink: 0;
        }

        /* Data Section */
        .data-section {
            padding: 48px 0;
        }
        .data-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }
        @media (min-width: 640px) {
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .data-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .data-card {
            background: rgba(11, 27, 58, 0.7);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: all 0.3s ease;
        }
        .data-card:hover {
            border-color: rgba(56, 189, 248, 0.35);
            box-shadow: 0 4px 20px rgba(37, 99, 235, 0.2);
            transform: translateY(-2px);
        }
        .data-card-label {
            font-size: 0.75rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }
        .data-card-value {
            font-size: 1.5rem;
            font-weight: 900;
            color: var(--accent-secondary);
            letter-spacing: -0.02em;
        }
        .data-card-desc {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        /* Related Posts */
        .related-posts-section {
            padding: 48px 0;
        }
        .related-posts-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }
        @media (min-width: 640px) {
            .related-posts-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .related-posts-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .related-post-card {
            background: rgba(11, 27, 58, 0.7);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s ease;
            cursor: pointer;
            display: flex;
            flex-direction: column;
        }
        .related-post-card:hover {
            border-color: rgba(56, 189, 248, 0.35);
            box-shadow: 0 6px 24px rgba(37, 99, 235, 0.25);
            transform: translateY(-3px);
        }
        .related-post-card img {
            width: 100%;
            height: 160px;
            object-fit: cover;
        }
        .related-post-card .card-body {
            padding: 16px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .related-post-card .card-tag {
            font-size: 0.7rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--accent-secondary);
        }
        .related-post-card .card-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
            flex: 1;
        }
        .related-post-card .card-date {
            font-size: 0.78rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* FAQ Section */
        .faq-section {
            padding: 48px 0;
        }
        .faq-item {
            background: rgba(11, 27, 58, 0.6);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .faq-item:hover {
            border-color: rgba(56, 189, 248, 0.3);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            cursor: pointer;
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--text-primary);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: color 0.3s ease;
        }
        .faq-question:hover {
            color: var(--accent-secondary);
        }
        .faq-question i {
            color: var(--accent-secondary);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 20px;
        }

        /* CTA Section */
        .cta-section {
            padding: 48px 0 64px;
        }
        .cta-card {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.15), rgba(56, 189, 248, 0.1));
            border: 1px solid rgba(56, 189, 248, 0.3);
            border-radius: var(--radius-xl);
            padding: 40px 24px;
            text-align: center;
        }
        .cta-card h2 {
            font-size: 1.5rem;
            font-weight: 900;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        @media (min-width: 768px) {
            .cta-card h2 {
                font-size: 1.75rem;
            }
        }
        .cta-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            max-width: 600px;
            margin: 0 auto 24px;
            line-height: 1.65;
        }
        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 12px;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--accent-secondary);
            border: 1px solid rgba(56, 189, 248, 0.4);
            border-radius: var(--radius-sm);
            background: transparent;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .btn-secondary:hover {
            background-color: rgba(56, 189, 248, 0.1);
            border-color: var(--accent-secondary);
        }

        /* Section Title */
        .section-title {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.01em;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .section-title i {
            color: var(--accent-secondary);
            font-size: 1.1rem;
        }
        @media (min-width: 768px) {
            .section-title {
                font-size: 1.6rem;
            }
        }

        /* Footer */
        .site-footer {
            background-color: var(--bg-secondary);
            border-top: 1px solid rgba(56, 189, 248, 0.12);
            padding: 48px 0 24px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
            }
        }
        .footer-brand-name {
            font-size: 0.9rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.5;
            margin-bottom: 12px;
        }
        .footer-brand-desc {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.65;
            max-width: 320px;
        }
        .footer-col-title {
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links li {
            font-size: 0.85rem;
            color: var(--text-secondary);
            transition: color 0.3s ease;
        }
        .footer-links a {
            color: var(--text-secondary);
            transition: color 0.3s ease;
        }
        .footer-links a:hover {
            color: var(--accent-secondary);
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding-top: 24px;
            border-top: 1px solid rgba(56, 189, 248, 0.1);
        }
        .footer-copyright {
            font-size: 0.78rem;
            color: var(--text-secondary);
        }

        /* Back to top FAB */
        .back-to-top-fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(7, 7, 13, 0.75);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(56, 189, 248, 0.35);
            border-radius: 12px;
            color: var(--accent-secondary);
            font-size: 1.1rem;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.3);
            opacity: 0.75;
        }
        .back-to-top-fab:hover {
            opacity: 1;
            box-shadow: 0 0 30px rgba(6, 182, 212, 0.55);
            transform: translateY(-2px);
        }
        .back-to-top-fab:active {
            transform: translateY(0);
            box-shadow: 0 0 15px rgba(6, 182, 212, 0.35);
        }

        /* Smooth reveal animation */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-in-up {
            animation: fadeInUp 0.5s ease-out forwards;
        }

/* roulang page: category1 */
:root {
            --bg-primary: #030712;
            --bg-secondary: #081229;
            --bg-card: #0B1B3A;
            --accent-primary: #2563EB;
            --accent-secondary: #38BDF8;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-accent: #60A5FA;
            --border-color: rgba(56, 189, 248, 0.15);
            --shadow-glow: 0 0 20px rgba(6, 182, 212, 0.45);
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-2xl: 80px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Be Vietnam Pro', sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--accent-secondary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }
        @media (min-width: 640px) {
            .container {
                padding-left: 24px;
                padding-right: 24px;
            }
        }
        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }
        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background-color: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(56, 189, 248, 0.12);
            transition: background-color 0.3s ease;
        }
        .site-header.scrolled {
            background-color: rgba(3, 7, 18, 0.95);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            gap: 16px;
        }
        .nav-logo {
            font-weight: 800;
            font-size: 1.05rem;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 240px;
        }
        @media (min-width: 640px) {
            .nav-logo {
                font-size: 1.15rem;
                max-width: 320px;
            }
        }
        .nav-logo:hover {
            color: var(--accent-secondary);
        }
        .nav-logo .flag-icon {
            color: var(--accent-secondary);
        }
        .nav-desktop-menu {
            display: none;
            align-items: center;
            gap: 8px;
        }
        @media (min-width: 1024px) {
            .nav-desktop-menu {
                display: flex;
            }
        }
        .nav-link {
            padding: 8px 14px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: all 0.3s ease;
            white-space: nowrap;
            position: relative;
        }
        .nav-link:hover {
            color: var(--accent-secondary);
            background-color: rgba(56, 189, 248, 0.08);
        }
        .nav-link.active {
            color: var(--accent-secondary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
            border-radius: 2px;
        }
        .nav-auth-btns {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .nav-login-btn {
            padding: 8px 14px;
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--accent-secondary);
            border: 1px solid rgba(56, 189, 248, 0.35);
            border-radius: var(--radius-sm);
            transition: all 0.3s ease;
            white-space: nowrap;
            background: transparent;
            cursor: pointer;
        }
        .nav-login-btn:hover {
            background-color: rgba(56, 189, 248, 0.12);
            border-color: var(--accent-secondary);
        }
        .nav-signup-btn {
            padding: 8px 16px;
            font-size: 0.82rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
            box-shadow: 0 0 15px rgba(37, 99, 235, 0.4);
        }
        .nav-signup-btn:hover {
            box-shadow: 0 0 25px rgba(56, 189, 248, 0.55);
            transform: translateY(-1px);
        }
        .nav-mobile-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: transparent;
            border: 1px solid rgba(56, 189, 248, 0.2);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            cursor: pointer;
            font-size: 1.1rem;
            transition: all 0.3s ease;
            flex-shrink: 0;
        }
        .nav-mobile-toggle:hover {
            border-color: var(--accent-secondary);
            color: var(--accent-secondary);
        }
        @media (min-width: 1024px) {
            .nav-mobile-toggle {
                display: none;
            }
        }
        .mobile-menu {
            display: none;
            padding-bottom: 16px;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-menu.open {
            display: flex;
        }
        @media (min-width: 1024px) {
            .mobile-menu {
                display: none !important;
            }
        }

        /* Hero Section */
        .hero-section {
            padding-top: 120px;
            padding-bottom: 60px;
            position: relative;
            background: linear-gradient(135deg, #030712 0%, #081229 45%, #0B1B3A 100%);
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/24839588e4ad9096.jpg') center/cover no-repeat;
            opacity: 0.18;
            z-index: 0;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, rgba(3,7,18,0.92) 0%, rgba(3,7,18,0.75) 55%, rgba(3,7,18,0.95) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr;
            gap: 36px;
        }
        @media (min-width: 768px) {
            .hero-content {
                grid-template-columns: 1.1fr 0.9fr;
                gap: 48px;
                align-items: center;
            }
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            background: rgba(56, 189, 248, 0.12);
            border: 1px solid rgba(56, 189, 248, 0.3);
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent-secondary);
            letter-spacing: 0.02em;
            margin-bottom: 16px;
            text-transform: uppercase;
        }
        .hero-title {
            font-size: 2rem;
            font-weight: 900;
            line-height: 1.25;
            letter-spacing: -0.03em;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        @media (min-width: 640px) {
            .hero-title {
                font-size: 2.5rem;
            }
        }
        @media (min-width: 768px) {
            .hero-title {
                font-size: 2.75rem;
            }
        }
        @media (min-width: 1024px) {
            .hero-title {
                font-size: 3rem;
            }
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-subtitle {
            font-size: 1rem;
            font-weight: 400;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 24px;
            max-width: 540px;
        }
        .hero-cta-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            margin-bottom: 28px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 26px;
            font-size: 0.92rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border-radius: var(--radius-md);
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 0 20px rgba(37, 99, 235, 0.4);
            white-space: nowrap;
        }
        .btn-primary:hover {
            box-shadow: 0 0 35px rgba(56, 189, 248, 0.55);
            transform: translateY(-2px);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 24px;
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--accent-secondary);
            background: transparent;
            border: 1px solid rgba(56, 189, 248, 0.35);
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
        }
        .btn-secondary:hover {
            background-color: rgba(56, 189, 248, 0.1);
            border-color: var(--accent-secondary);
        }
        .hero-stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            padding-top: 20px;
            border-top: 1px solid rgba(56, 189, 248, 0.12);
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
        }
        .hero-stat-value {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
        }
        .hero-stat-value .unit {
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-accent);
            margin-left: 2px;
        }
        .hero-stat-label {
            font-size: 0.78rem;
            font-weight: 400;
            color: var(--text-secondary);
            margin-top: 2px;
        }
        .hero-visual-card {
            position: relative;
            z-index: 2;
            background: rgba(11, 27, 58, 0.75);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid rgba(56, 189, 248, 0.22);
            border-radius: var(--radius-xl);
            padding: 24px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
        }
        .hero-visual-card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 16px;
        }
        .hero-visual-card-title {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.01em;
        }
        .hero-visual-card-badge {
            font-size: 0.7rem;
            font-weight: 700;
            color: #10B981;
            background: rgba(16, 185, 129, 0.12);
            padding: 4px 10px;
            border-radius: 999px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }
        .hero-odds-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 14px;
            border-radius: var(--radius-md);
            background: rgba(3, 7, 18, 0.5);
            border: 1px solid rgba(56, 189, 248, 0.1);
            margin-bottom: 8px;
            transition: all 0.3s ease;
        }
        .hero-odds-row:hover {
            border-color: rgba(56, 189, 248, 0.3);
            background: rgba(3, 7, 18, 0.7);
        }
        .hero-odds-match {
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-primary);
            flex: 1;
            min-width: 0;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            padding-right: 8px;
        }
        .hero-odds-values {
            display: flex;
            gap: 10px;
            flex-shrink: 0;
        }
        .hero-odds-value {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--text-accent);
            background: rgba(56, 189, 248, 0.1);
            padding: 3px 10px;
            border-radius: 6px;
            min-width: 44px;
            text-align: center;
        }
        .hero-odds-value.hot {
            color: #FBBF24;
            background: rgba(251, 191, 36, 0.1);
        }
        .hero-odds-value.low {
            color: #10B981;
            background: rgba(16, 185, 129, 0.1);
        }

        /* Section Base */
        .section-block {
            padding: var(--spacing-xl) 0;
            position: relative;
        }
        @media (min-width: 768px) {
            .section-block {
                padding: var(--spacing-2xl) 0;
            }
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--accent-secondary);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 10px;
        }
        .section-title {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            line-height: 1.3;
            margin-bottom: 12px;
        }
        @media (min-width: 640px) {
            .section-title {
                font-size: 1.8rem;
            }
        }
        @media (min-width: 1024px) {
            .section-title {
                font-size: 2rem;
            }
        }
        .section-desc {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.65;
            max-width: 680px;
            margin-bottom: 32px;
        }

        /* Feature Card Grid */
        .feature-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        @media (min-width: 640px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .feature-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .feature-card {
            background: rgba(11, 27, 58, 0.6);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(56, 189, 248, 0.12);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: all 0.3s ease;
        }
        .feature-card:hover {
            border-color: rgba(56, 189, 248, 0.3);
            box-shadow: 0 4px 24px rgba(6, 182, 212, 0.15);
            transform: translateY(-2px);
        }
        .feature-card-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(56, 189, 248, 0.12);
            color: var(--accent-secondary);
            font-size: 1.25rem;
            margin-bottom: 16px;
        }
        .feature-card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }
        .feature-card-desc {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .feature-card-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--text-accent);
            background: rgba(56, 189, 248, 0.08);
            padding: 4px 10px;
            border-radius: 999px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }

        /* Odd Table */
        .odds-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-lg);
            border: 1px solid rgba(56, 189, 248, 0.12);
            background: rgba(11, 27, 58, 0.4);
        }
        .odds-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 700px;
            font-size: 0.85rem;
        }
        .odds-table th {
            text-align: left;
            padding: 14px 16px;
            font-weight: 700;
            color: var(--text-accent);
            background: rgba(3, 7, 18, 0.5);
            border-bottom: 1px solid rgba(56, 189, 248, 0.1);
            text-transform: uppercase;
            font-size: 0.72rem;
            letter-spacing: 0.05em;
        }
        .odds-table td {
            padding: 12px 16px;
            border-bottom: 1px solid rgba(56, 189, 248, 0.07);
            color: var(--text-primary);
        }
        .odds-table tr:last-child td {
            border-bottom: none;
        }
        .odds-table tr:hover td {
            background: rgba(56, 189, 248, 0.04);
        }
        .odds-table .match-cell {
            font-weight: 600;
            font-size: 0.82rem;
        }
        .odds-table .league-cell {
            color: var(--text-secondary);
            font-size: 0.72rem;
            font-weight: 500;
        }
        .odds-table .value-cell {
            font-weight: 700;
            color: var(--text-accent);
            white-space: nowrap;
        }
        .odds-table .value-hot {
            color: #FBBF24;
        }
        .odds-table .value-green {
            color: #10B981;
        }
        .odds-table .value-red {
            color: #EF4444;
        }
        .odds-change-up {
            color: #10B981;
            font-size: 0.75rem;
            font-weight: 600;
        }
        .odds-change-down {
            color: #EF4444;
            font-size: 0.75rem;
            font-weight: 600;
        }

        /* Scenario Cards */
        .scenario-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }
        @media (min-width: 640px) {
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        .scenario-card {
            display: flex;
            gap: 14px;
            padding: 18px 20px;
            background: rgba(11, 27, 58, 0.5);
            border: 1px solid rgba(56, 189, 248, 0.1);
            border-radius: var(--radius-md);
            transition: all 0.3s ease;
        }
        .scenario-card:hover {
            border-color: rgba(56, 189, 248, 0.25);
        }
        .scenario-card-num {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: rgba(56, 189, 248, 0.12);
            color: var(--accent-secondary);
            font-weight: 800;
            font-size: 0.9rem;
        }
        .scenario-card-body {
            flex: 1;
            min-width: 0;
        }
        .scenario-card-title {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .scenario-card-desc {
            font-size: 0.82rem;
            color: var(--text-secondary);
            line-height: 1.55;
        }

        /* Analysis Flow */
        .flow-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 14px;
        }
        @media (min-width: 640px) {
            .flow-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .flow-step {
            display: flex;
            flex-direction: column;
            gap: 10px;
            padding: 20px;
            background: rgba(11, 27, 58, 0.45);
            border: 1px solid rgba(56, 189, 248, 0.08);
            border-radius: var(--radius-md);
            position: relative;
        }
        .flow-step-num {
            font-size: 1.75rem;
            font-weight: 900;
            color: rgba(56, 189, 248, 0.18);
            line-height: 1;
        }
        .flow-step-title {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-primary);
        }
        .flow-step-desc {
            font-size: 0.8rem;
            color: var(--text-secondary);
            line-height: 1.55;
        }
        .flow-arrow {
            display: none;
            align-items: center;
            justify-content: center;
            color: var(--accent-secondary);
            font-size: 1.25rem;
        }
        @media (min-width: 640px) {
            .flow-arrow {
                display: flex;
            }
        }
        .flow-wrapper {
            display: grid;
            grid-template-columns: 1fr;
            gap: 14px;
        }
        @media (min-width: 640px) {
            .flow-wrapper {
                grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
                align-items: center;
            }
        }

        /* Content List */
        .content-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }
        @media (min-width: 640px) {
            .content-list {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .content-list {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .content-card {
            display: flex;
            flex-direction: column;
            gap: 12px;
            padding: 18px;
            background: rgba(11, 27, 58, 0.5);
            border: 1px solid rgba(56, 189, 248, 0.1);
            border-radius: var(--radius-lg);
            transition: all 0.3s ease;
            cursor: pointer;
        }
        .content-card:hover {
            border-color: rgba(56, 189, 248, 0.3);
            box-shadow: 0 4px 20px rgba(6, 182, 212, 0.12);
            transform: translateY(-2px);
        }
        .content-card-img {
            width: 100%;
            height: 150px;
            object-fit: cover;
            border-radius: var(--radius-md);
            margin-bottom: 4px;
        }
        .content-card-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.72rem;
            color: var(--text-secondary);
        }
        .content-card-title {
            font-size: 0.92rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.45;
        }
        .content-card-excerpt {
            font-size: 0.8rem;
            color: var(--text-secondary);
            line-height: 1.55;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .content-card-link {
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--accent-secondary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .content-card-link:hover {
            color: var(--text-accent);
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            max-width: 820px;
        }
        .faq-item {
            background: rgba(11, 27, 58, 0.5);
            border: 1px solid rgba(56, 189, 248, 0.1);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .faq-item:hover {
            border-color: rgba(56, 189, 248, 0.25);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 16px 20px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--text-primary);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            color: var(--accent-secondary);
            font-size: 0.85rem;
            transition: transform 0.3s ease;
        }
        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            padding: 0 20px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .faq-item.active .faq-answer {
            max-height: 220px;
            padding: 0 20px 16px;
        }

        /* CTA Section */
        .cta-section {
            padding: var(--spacing-xl) 0;
        }
        @media (min-width: 768px) {
            .cta-section {
                padding: var(--spacing-2xl) 0;
            }
        }
        .cta-panel {
            background: linear-gradient(135deg, rgba(11, 27, 58, 0.8), rgba(37, 99, 235, 0.15));
            border: 1px solid rgba(56, 189, 248, 0.25);
            border-radius: var(--radius-xl);
            padding: 36px 28px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        @media (min-width: 640px) {
            .cta-panel {
                padding: 48px 40px;
            }
        }
        .cta-panel::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at center, rgba(56, 189, 248, 0.08) 0%, transparent 60%);
            pointer-events: none;
        }
        .cta-title {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }
        @media (min-width: 640px) {
            .cta-title {
                font-size: 1.8rem;
            }
        }
        .cta-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 24px;
            line-height: 1.6;
        }
        .cta-btn-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 12px;
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: rgba(7, 7, 13, 0.8);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.45);
            cursor: pointer;
            transition: all 0.3s ease;
            color: var(--accent-secondary);
            font-size: 1.25rem;
            animation: fabPulse 2.5s ease-in-out infinite;
            opacity: 0.75;
        }
        .fab-left::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 16px;
            padding: 2px;
            background: linear-gradient(135deg, #A3E635, #06B6D4);
            -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-left:hover {
            opacity: 1;
            box-shadow: 0 0 30px rgba(6, 182, 212, 0.65);
            transform: scale(1.08);
            animation: none;
        }
        .fab-left:active {
            transform: scale(0.95);
        }
        .fab-notification {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 14px;
            height: 14px;
            background: #EF4444;
            border-radius: 50%;
            border: 2px solid rgba(7, 7, 13, 0.9);
            animation: fabNotifPulse 1.5s ease-in-out infinite;
        }
        @keyframes fabPulse {
            0%, 100% {
                box-shadow: 0 0 20px rgba(6, 182, 212, 0.35);
            }
            50% {
                box-shadow: 0 0 28px rgba(6, 182, 212, 0.55);
            }
        }
        @keyframes fabNotifPulse {
            0%, 100% {
                transform: scale(1);
                opacity: 1;
            }
            50% {
                transform: scale(1.3);
                opacity: 0.7;
            }
        }

        /* Footer */
        .site-footer {
            background: #02050B;
            border-top: 1px solid rgba(56, 189, 248, 0.1);
            padding: 48px 0 24px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1.4fr 1fr 1fr 1fr;
            }
        }
        .footer-brand-name {
            font-size: 0.9rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.4;
            margin-bottom: 10px;
        }
        .footer-brand-desc {
            font-size: 0.82rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .footer-col-title {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--text-primary);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 14px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links li,
        .footer-links a {
            font-size: 0.82rem;
            color: var(--text-secondary);
            transition: color 0.3s ease;
            cursor: pointer;
        }
        .footer-links a:hover {
            color: var(--accent-secondary);
        }
        .footer-bottom {
            display: flex;
            flex-direction: column;
            gap: 8px;
            padding-top: 20px;
            border-top: 1px solid rgba(56, 189, 248, 0.08);
        }
        .footer-copyright {
            font-size: 0.78rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* Utility */
        .text-accent {
            color: var(--accent-secondary);
        }
        .bg-glow {
            position: absolute;
            pointer-events: none;
            border-radius: 50%;
            filter: blur(80px);
        }
        .mt-0 { margin-top: 0; }
        .mt-1 { margin-top: 4px; }
        .mt-2 { margin-top: 8px; }
        .mt-3 { margin-top: 12px; }
        .mt-4 { margin-top: 16px; }
        .mt-5 { margin-top: 24px; }
        .mb-0 { margin-bottom: 0; }
        .mb-1 { margin-bottom: 4px; }
        .mb-2 { margin-bottom: 8px; }
        .mb-3 { margin-bottom: 12px; }
        .mb-4 { margin-bottom: 16px; }
        .mb-5 { margin-bottom: 24px; }
        .text-left { text-align: left; }
        .text-center { text-align: center; }

/* roulang page: category2 */
:root {
            --bg-primary: #030712;
            --bg-secondary: #081229;
            --bg-card: #0B1B3A;
            --accent-primary: #2563EB;
            --accent-secondary: #38BDF8;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-accent: #60A5FA;
            --border-color: rgba(56, 189, 248, 0.15);
            --shadow-glow: 0 0 20px rgba(6, 182, 212, 0.45);
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-2xl: 80px;
        }

        html {
            scroll-behavior: smooth;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s ease;
        }

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

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 24px;
                padding-right: 24px;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        @media (min-width: 1280px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background-color: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(56, 189, 248, 0.12);
            transition: background-color 0.3s ease;
        }

        .site-header.scrolled {
            background-color: rgba(3, 7, 18, 0.95);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            gap: 16px;
        }

        .nav-logo {
            font-weight: 800;
            font-size: 1.05rem;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 260px;
            flex-shrink: 0;
        }

        @media (min-width: 768px) {
            .nav-logo {
                font-size: 1.15rem;
                max-width: 400px;
            }
        }

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

        .nav-logo .flag-icon {
            color: var(--accent-secondary);
        }

        .nav-desktop-menu {
            display: none;
            align-items: center;
            gap: 8px;
        }

        @media (min-width: 1024px) {
            .nav-desktop-menu {
                display: flex;
            }
        }

        .nav-link {
            padding: 8px 14px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: all 0.3s ease;
            white-space: nowrap;
            position: relative;
        }

        .nav-link:hover {
            color: var(--accent-secondary);
            background-color: rgba(56, 189, 248, 0.08);
        }

        .nav-link.active {
            color: var(--accent-secondary);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
            border-radius: 2px;
        }

        .nav-auth-btns {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .nav-login-btn {
            padding: 8px 14px;
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--accent-secondary);
            border: 1px solid rgba(56, 189, 248, 0.35);
            border-radius: var(--radius-sm);
            transition: all 0.3s ease;
            white-space: nowrap;
            background: transparent;
            cursor: pointer;
        }

        .nav-login-btn:hover {
            background-color: rgba(56, 189, 248, 0.12);
            border-color: var(--accent-secondary);
        }

        .nav-signup-btn {
            padding: 8px 16px;
            font-size: 0.82rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
            box-shadow: 0 0 15px rgba(37, 99, 235, 0.4);
        }

        .nav-signup-btn:hover {
            box-shadow: 0 0 25px rgba(56, 189, 248, 0.55);
            transform: translateY(-1px);
        }

        .nav-mobile-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: transparent;
            border: 1px solid rgba(56, 189, 248, 0.2);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            cursor: pointer;
            font-size: 1.1rem;
            transition: all 0.3s ease;
            flex-shrink: 0;
        }

        .nav-mobile-toggle:hover {
            background-color: rgba(56, 189, 248, 0.1);
            border-color: var(--accent-secondary);
        }

        @media (min-width: 1024px) {
            .nav-mobile-toggle {
                display: none;
            }
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            padding: 12px 0 16px;
            border-top: 1px solid rgba(56, 189, 248, 0.1);
            gap: 4px;
        }

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

        .mobile-menu .nav-link {
            padding: 12px 14px;
            font-size: 0.95rem;
        }

        .mobile-menu .nav-auth-btns {
            margin-top: 8px;
            padding: 0 4px;
        }

        @media (min-width: 1024px) {
            .mobile-menu {
                display: none !important;
            }
        }

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

        .section-title {
            font-size: 1.75rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            line-height: 1.3;
            margin-bottom: var(--spacing-sm);
            color: var(--text-primary);
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.65;
            max-width: 640px;
            margin-bottom: var(--spacing-lg);
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            font-size: 0.75rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-secondary);
            background: rgba(56, 189, 248, 0.1);
            border: 1px solid rgba(56, 189, 248, 0.2);
            border-radius: 50px;
            margin-bottom: var(--spacing-sm);
        }

        /* Hero category */
        .cat-hero {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            padding: 120px 0 80px;
            background-image: url('/assets/images/24839588e4ad9096.jpg');
            background-size: cover;
            background-position: center;
            isolation: isolate;
        }

        .cat-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(3,7,18,0.92) 0%, rgba(8,18,41,0.75) 60%, rgba(3,7,18,0.65) 100%);
            z-index: -1;
        }

        .cat-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(180deg, transparent, var(--bg-primary));
            z-index: -1;
        }

        .cat-hero-content {
            max-width: 768px;
        }

        .cat-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-secondary);
            background: rgba(56, 189, 248, 0.12);
            border: 1px solid rgba(56, 189, 248, 0.25);
            border-radius: 50px;
            margin-bottom: var(--spacing-md);
            text-transform: uppercase;
            letter-spacing: 0.06em;
        }

        .cat-hero-title {
            font-size: 2.2rem;
            font-weight: 900;
            letter-spacing: -0.04em;
            line-height: 1.2;
            margin-bottom: var(--spacing-sm);
            color: var(--text-primary);
        }

        .cat-hero-title span {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .cat-hero-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 600px;
            margin-bottom: var(--spacing-lg);
        }

        .cat-hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            font-size: 0.9rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #fff;
            box-shadow: 0 0 20px rgba(37, 99, 235, 0.45);
        }

        .btn-primary:hover {
            box-shadow: 0 0 30px rgba(56, 189, 248, 0.6);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid rgba(56, 189, 248, 0.3);
        }

        .btn-outline:hover {
            background: rgba(56, 189, 248, 0.1);
            border-color: var(--accent-secondary);
            color: var(--accent-secondary);
        }

        /* Stats bar */
        .stats-bar {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            padding: var(--spacing-md) 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }

        @media (min-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 24px;
            }
        }

        .stat-item {
            text-align: center;
            padding: 8px;
        }

        .stat-number {
            font-size: 1.6rem;
            font-weight: 900;
            color: var(--accent-secondary);
            letter-spacing: -0.02em;
        }

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

        /* Dimension cards */
        .dimension-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        @media (min-width: 768px) {
            .dimension-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .dimension-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .glass-card {
            background: linear-gradient(145deg, rgba(11, 27, 58, 0.8), rgba(8, 18, 41, 0.6));
            border: 1px solid rgba(56, 189, 248, 0.15);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: all 0.35s ease;
            position: relative;
            overflow: hidden;
        }

        .glass-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--accent-secondary), transparent);
            opacity: 0;
            transition: opacity 0.35s ease;
        }

        .glass-card:hover {
            border-color: rgba(56, 189, 248, 0.35);
            box-shadow: 0 0 25px rgba(6, 182, 212, 0.15);
            transform: translateY(-3px);
        }

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

        .glass-card-icon {
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(56, 189, 248, 0.1);
            border: 1px solid rgba(56, 189, 248, 0.2);
            border-radius: var(--radius-md);
            margin-bottom: var(--spacing-sm);
            font-size: 1.3rem;
            color: var(--accent-secondary);
        }

        .glass-card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
            letter-spacing: -0.02em;
        }

        .glass-card-text {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* Process steps */
        .process-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            counter-reset: step;
        }

        .process-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: var(--spacing-md);
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            transition: all 0.3s ease;
            counter-increment: step;
        }

        .process-item:hover {
            border-color: rgba(56, 189, 248, 0.3);
            box-shadow: var(--shadow-card);
        }

        .process-number {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            flex-shrink: 0;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #fff;
            font-weight: 800;
            font-size: 0.95rem;
            border-radius: var(--radius-sm);
            box-shadow: 0 0 12px rgba(37, 99, 235, 0.4);
        }

        .process-item-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .process-item-text {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* CMS list */
        .cms-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        @media (min-width: 768px) {
            .cms-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .cms-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .cms-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all 0.35s ease;
            display: flex;
            flex-direction: column;
        }

        .cms-card:hover {
            border-color: rgba(56, 189, 248, 0.3);
            box-shadow: 0 0 25px rgba(6, 182, 212, 0.12);
            transform: translateY(-3px);
        }

        .cms-card-img-wrap {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--bg-secondary);
        }

        .cms-card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .cms-card-body {
            padding: var(--spacing-sm);
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .cms-card-tag {
            font-size: 0.7rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--accent-secondary);
            margin-bottom: 6px;
        }

        .cms-card-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
            letter-spacing: -0.01em;
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .cms-card-text {
            font-size: 0.82rem;
            color: var(--text-secondary);
            line-height: 1.55;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        /* Trust block */
        .trust-block {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            padding: var(--spacing-lg);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }

        @media (min-width: 768px) {
            .trust-block {
                flex-direction: row;
                align-items: center;
                gap: var(--spacing-lg);
            }
        }

        .trust-block-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 64px;
            height: 64px;
            flex-shrink: 0;
            background: rgba(56, 189, 248, 0.1);
            border: 2px solid rgba(56, 189, 248, 0.25);
            border-radius: 50%;
            font-size: 1.8rem;
            color: var(--accent-secondary);
        }

        .trust-block-text h3 {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 6px;
            letter-spacing: -0.02em;
        }

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

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

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-item:hover {
            border-color: rgba(56, 189, 248, 0.3);
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 20px;
            cursor: pointer;
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--text-primary);
            transition: color 0.3s ease;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            gap: 12px;
        }

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

        .faq-question i {
            flex-shrink: 0;
            color: var(--accent-secondary);
            transition: transform 0.3s ease;
            font-size: 0.85rem;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 20px;
        }

        .faq-answer.open {
            max-height: 500px;
            padding: 0 20px 16px;
        }

        .faq-answer p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* CTA section */
        .cta-section {
            background: linear-gradient(145deg, var(--bg-secondary), #0B1B3A);
            border: 1px solid rgba(56, 189, 248, 0.15);
            border-radius: var(--radius-xl);
            padding: var(--spacing-xl) var(--spacing-lg);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: 50%;
            transform: translateX(-50%);
            width: 80%;
            height: 200%;
            background: radial-gradient(ellipse at center, rgba(56,189,248,0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-title {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            color: var(--text-primary);
            margin-bottom: var(--spacing-sm);
            position: relative;
        }

        .cta-desc {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.65;
            max-width: 560px;
            margin: 0 auto var(--spacing-lg);
            position: relative;
        }

        .cta-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            position: relative;
        }

        /* Footer */
        .site-footer {
            background: #02050D;
            border-top: 1px solid rgba(56, 189, 248, 0.1);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: var(--spacing-2xl);
        }

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

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
                gap: var(--spacing-lg);
            }
        }

        .footer-brand-name {
            font-size: 1rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .footer-brand-desc {
            font-size: 0.82rem;
            color: var(--text-secondary);
            line-height: 1.6;
            max-width: 360px;
        }

        .footer-col-title {
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-secondary);
            margin-bottom: 12px;
        }

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

        .footer-links li {
            margin-bottom: 8px;
            font-size: 0.85rem;
            color: var(--text-secondary);
        }

        .footer-links a {
            color: var(--text-secondary);
            transition: color 0.3s ease;
        }

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

        .footer-bottom {
            display: flex;
            flex-direction: column;
            gap: 6px;
            padding-top: var(--spacing-md);
            border-top: 1px solid rgba(56, 189, 248, 0.08);
        }

        @media (min-width: 768px) {
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                align-items: center;
            }
        }

        .footer-copyright {
            font-size: 0.75rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            background: rgba(7, 7, 13, 0.8);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(7,7,13,0.85), rgba(7,7,13,0.85)), linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            background-origin: border-box;
            background-clip: padding-box, border-box;
            border-radius: 50%;
            color: var(--accent-secondary);
            font-size: 1.2rem;
            cursor: pointer;
            transition: all 0.35s ease;
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.35);
            opacity: 0.75;
            animation: fabPulse 3s infinite ease-in-out;
        }

        @keyframes fabPulse {
            0%, 100% {
                box-shadow: 0 0 20px rgba(6, 182, 212, 0.35);
            }
            50% {
                box-shadow: 0 0 32px rgba(6, 182, 212, 0.55);
            }
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(6, 182, 212, 0.55);
            animation: none;
        }

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

        .fab-notif {
            position: absolute;
            top: -3px;
            right: -3px;
            width: 14px;
            height: 14px;
            background: #F43F5E;
            border-radius: 50%;
            border: 2px solid #07070D;
            animation: notifBlink 1.5s infinite;
        }

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

        /* Scroll to top */
        .scroll-top {
            position: fixed;
            right: 16px;
            bottom: 24px;
            z-index: 50;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(7, 7, 13, 0.8);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(56, 189, 248, 0.25);
            border-radius: var(--radius-sm);
            color: var(--accent-secondary);
            font-size: 0.95rem;
            cursor: pointer;
            transition: all 0.3s ease;
            opacity: 0.7;
        }

        .scroll-top:hover {
            opacity: 1;
            border-color: var(--accent-secondary);
            box-shadow: 0 0 15px rgba(6, 182, 212, 0.3);
        }

/* roulang page: category3 */
:root {
            --bg-primary: #030712;
            --bg-secondary: #081229;
            --bg-card: #0B1B3A;
            --accent-primary: #2563EB;
            --accent-secondary: #38BDF8;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-accent: #60A5FA;
            --border-color: rgba(56, 189, 248, 0.15);
            --shadow-glow: 0 0 20px rgba(6, 182, 212, 0.45);
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-2xl: 80px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Be Vietnam Pro', sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--accent-secondary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }
        @media (min-width: 640px) {
            .container { padding-left: 24px; padding-right: 24px; }
        }
        @media (min-width: 768px) {
            .container { padding-left: 32px; padding-right: 32px; }
        }
        @media (min-width: 1024px) {
            .container { padding-left: 40px; padding-right: 40px; }
        }
        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background-color: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(56, 189, 248, 0.12);
            transition: background-color 0.3s ease;
        }
        .site-header.scrolled {
            background-color: rgba(3, 7, 18, 0.95);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            gap: 16px;
        }
        .nav-logo {
            font-weight: 800;
            font-size: 1.05rem;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 260px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        @media (min-width: 768px) {
            .nav-logo { font-size: 1.15rem; max-width: 400px; }
        }
        .nav-logo .flag-icon { color: var(--accent-secondary); }
        .nav-logo:hover { color: var(--accent-secondary); }
        .nav-desktop-menu {
            display: none;
            align-items: center;
            gap: 8px;
        }
        @media (min-width: 1024px) {
            .nav-desktop-menu { display: flex; }
        }
        .nav-link {
            padding: 8px 14px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: all 0.3s ease;
            white-space: nowrap;
            position: relative;
        }
        .nav-link:hover {
            color: var(--accent-secondary);
            background-color: rgba(56, 189, 248, 0.08);
        }
        .nav-link.active {
            color: var(--accent-secondary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
            border-radius: 2px;
        }
        .nav-auth-btns {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .nav-login-btn {
            padding: 8px 14px;
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--accent-secondary);
            border: 1px solid rgba(56, 189, 248, 0.35);
            border-radius: var(--radius-sm);
            transition: all 0.3s ease;
            white-space: nowrap;
            background: transparent;
            cursor: pointer;
        }
        .nav-login-btn:hover {
            background-color: rgba(56, 189, 248, 0.12);
            border-color: var(--accent-secondary);
        }
        .nav-signup-btn {
            padding: 8px 16px;
            font-size: 0.82rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
            box-shadow: 0 0 15px rgba(37, 99, 235, 0.4);
        }
        .nav-signup-btn:hover {
            box-shadow: 0 0 25px rgba(56, 189, 248, 0.55);
            transform: translateY(-1px);
        }
        .nav-mobile-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: transparent;
            border: 1px solid rgba(56, 189, 248, 0.2);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            cursor: pointer;
            font-size: 1.1rem;
            transition: all 0.3s ease;
            flex-shrink: 0;
        }
        @media (min-width: 1024px) {
            .nav-mobile-toggle { display: none; }
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            background-color: rgba(3, 7, 18, 0.98);
            border-top: 1px solid rgba(56, 189, 248, 0.12);
            padding: 16px 0;
            gap: 8px;
        }
        .mobile-menu.open { display: flex; }
        .mobile-menu .nav-link { padding: 12px 16px; font-size: 0.9rem; }
        .mobile-menu .nav-auth-btns { padding: 12px 16px; }
        /* Main */
        main { padding-top: 68px; }
        .section { padding: var(--spacing-xl) 0; }
        .section-alt { background-color: var(--bg-secondary); }
        .section-heading {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.3;
            margin-bottom: var(--spacing-md);
            color: var(--text-primary);
        }
        @media (min-width: 768px) {
            .section-heading { font-size: 2.2rem; }
        }
        .text-accent { color: var(--accent-secondary); }
        .text-secondary { color: var(--text-secondary); }
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-card);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
        }
        .badge {
            display: inline-block;
            padding: 4px 12px;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 20px;
            background: rgba(56, 189, 248, 0.15);
            color: var(--accent-secondary);
            letter-spacing: 0.03em;
        }
        .badge-outline {
            background: transparent;
            border: 1px solid var(--accent-secondary);
            color: var(--accent-secondary);
        }
        .btn {
            display: inline-block;
            padding: 10px 20px;
            font-weight: 700;
            border-radius: var(--radius-sm);
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #fff;
            box-shadow: 0 0 15px rgba(37, 99, 235, 0.4);
        }
        .btn-primary:hover {
            box-shadow: 0 0 25px rgba(56, 189, 248, 0.55);
            transform: translateY(-1px);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--accent-secondary);
            color: var(--accent-secondary);
        }
        .btn-outline:hover {
            background: rgba(56, 189, 248, 0.1);
        }
        /* Hero */
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: var(--spacing-md);
            align-items: center;
        }
        @media (min-width: 768px) {
            .hero-grid { grid-template-columns: 1.2fr 0.8fr; }
        }
        .hero-main-card {
            position: relative;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-card);
            z-index: 2;
        }
        .hero-side-stack {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }
        .hero-side-card {
            background: rgba(11, 27, 58, 0.8);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            backdrop-filter: blur(8px);
            box-shadow: var(--shadow-card);
        }
        .hero-title {
            font-size: 2.2rem;
            font-weight: 900;
            letter-spacing: -0.03em;
            line-height: 1.2;
            margin-bottom: var(--spacing-sm);
        }
        @media (min-width: 768px) {
            .hero-title { font-size: 3rem; }
        }
        .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: var(--spacing-md);
            line-height: 1.6;
        }
        .stat-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
            gap: var(--spacing-sm);
            margin-top: var(--spacing-md);
        }
        .stat-box {
            text-align: center;
            padding: var(--spacing-sm);
            background: rgba(56, 189, 248, 0.05);
            border-radius: var(--radius-md);
        }
        .stat-number {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent-secondary);
        }
        .stat-label {
            font-size: 0.8rem;
            color: var(--text-secondary);
        }
        /* Feature cards */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: var(--spacing-md);
        }
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            transition: all 0.3s ease;
        }
        .feature-card:hover {
            border-color: rgba(56, 189, 248, 0.4);
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.2);
        }
        .feature-icon {
            font-size: 1.8rem;
            color: var(--accent-secondary);
            margin-bottom: var(--spacing-xs);
        }
        .feature-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: var(--spacing-xs);
        }
        .feature-text {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        /* Process */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: var(--spacing-md);
        }
        .process-step {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            position: relative;
        }
        .step-number {
            position: absolute;
            top: -12px;
            left: var(--spacing-sm);
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #fff;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.9rem;
        }
        .step-title {
            font-weight: 700;
            margin-top: var(--spacing-xs);
            margin-bottom: var(--spacing-xs);
        }
        .step-text {
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
        }
        .faq-question {
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: var(--spacing-xs);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
        }
        .faq-answer {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.6;
            display: none;
        }
        .faq-item.active .faq-answer { display: block; }
        .faq-toggle-icon {
            transition: transform 0.3s ease;
        }
        .faq-item.active .faq-toggle-icon { transform: rotate(180deg); }
        /* Articles */
        .article-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: var(--spacing-md);
        }
        .article-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            transition: all 0.3s ease;
        }
        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(0,0,0,0.45);
        }
        .article-date {
            font-size: 0.75rem;
            color: var(--accent-secondary);
            margin-bottom: var(--spacing-xs);
        }
        .article-title {
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: var(--spacing-xs);
            line-height: 1.4;
        }
        .article-excerpt {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, rgba(37,99,235,0.1), rgba(56,189,248,0.1));
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            padding: var(--spacing-lg);
            text-align: center;
        }
        .cta-title {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: var(--spacing-sm);
        }
        /* Footer */
        .site-footer {
            background-color: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: var(--spacing-xl) 0;
            margin-top: var(--spacing-xl);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }
        @media (min-width: 768px) {
            .footer-grid { grid-template-columns: 1.5fr 1fr 1fr 1fr; }
        }
        .footer-brand-name {
            font-weight: 800;
            font-size: 1.1rem;
            margin-bottom: var(--spacing-xs);
            color: var(--text-primary);
        }
        .footer-brand-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .footer-col-title {
            font-weight: 700;
            font-size: 0.9rem;
            margin-bottom: var(--spacing-sm);
            color: var(--text-primary);
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }
        .footer-links li, .footer-links a {
            font-size: 0.85rem;
            color: var(--text-secondary);
            transition: color 0.3s ease;
        }
        .footer-links a:hover { color: var(--accent-secondary); }
        .footer-bottom {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
            padding-top: var(--spacing-md);
            border-top: 1px solid var(--border-color);
            font-size: 0.8rem;
            color: var(--text-secondary);
        }
        @media (min-width: 768px) {
            .footer-bottom { flex-direction: row; justify-content: space-between; }
        }
        .footer-copyright { color: var(--text-secondary); }
        /* Responsive adjustments */
        @media (max-width: 767px) {
            .section { padding: var(--spacing-lg) 0; }
            .hero-title { font-size: 1.8rem; }
            .hero-subtitle { font-size: 0.95rem; }
        }