/* roulang page: index */
:root {
            --primary: #2867D0;
            --primary-dark: #1D4FA0;
            --primary-light: #E8F1FE;
            --accent: #17B3A6;
            --accent-light: #E6F7F5;
            --success: #1FA36B;
            --warning: #F59E0B;
            --danger: #DC4B4B;
            --bg: #F6F8FC;
            --white: #FFFFFF;
            --text: #1D2333;
            --text-secondary: #5E6B85;
            --text-muted: #8A97B0;
            --border: #E3E9F2;
            --footer-bg: #1F2A44;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 2px 8px rgba(31, 55, 99, 0.06);
            --shadow-hover: 0 10px 24px rgba(31, 55, 99, 0.12);
            --shadow-lg: 0 12px 32px rgba(31, 55, 99, 0.14);
            --space-section: 100px;
            --space-section-mobile: 64px;
            --font-family: -apple-system, "SF Pro SC", "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            background-color: var(--bg);
            color: var(--text);
            font-size: 15px;
            line-height: 1.75;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: var(--text);
            transition: color .2s;
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            object-fit: cover;
        }
        button {
            border: none;
            border-radius: var(--radius-sm);
            cursor: pointer;
            font-family: inherit;
        }
        input,
        textarea,
        select {
            font-family: inherit;
        }
        .container-custom {
            max-width: 1200px;
            width: 100%;
            padding-right: 24px;
            padding-left: 24px;
            margin-right: auto;
            margin-left: auto;
        }
        .section-padding {
            padding-top: var(--space-section);
            padding-bottom: var(--space-section);
        }
        .section-title {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 8px;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 40px;
            max-width: 720px;
        }
        .section-divider {
            width: 32px;
            height: 4px;
            background: var(--primary);
            border-radius: 2px;
            margin-bottom: 24px;
        }
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            border: 2px solid var(--primary);
            min-height: 48px;
            transition: all .2s;
            letter-spacing: .3px;
        }
        .btn-primary-custom:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 12px rgba(40, 103, 208, 0.25);
            transform: translateY(-1px);
        }
        .btn-primary-custom:active {
            transform: translateY(1px);
            box-shadow: none;
        }
        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--white);
            color: var(--text);
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: 1px solid #D7DEF0;
            min-height: 48px;
            transition: all .2s;
        }
        .btn-outline-custom:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .btn-outline-custom:active {
            transform: translateY(1px);
        }
        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid #E7ECF5;
            height: 72px;
            display: flex;
            align-items: center;
        }
        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .site-logo .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            color: #fff;
        }
        .site-logo .logo-text {
            font-size: 18px;
            font-weight: 800;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: -0.2px;
        }
        .site-logo .logo-text span {
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            padding: 2px 8px;
            border-radius: 999px;
            margin-left: 4px;
            font-weight: 600;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
            margin-left: 32px;
        }
        .main-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            padding: 8px 0;
            position: relative;
            white-space: nowrap;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width .25s ease;
            border-radius: 1px;
        }
        .main-nav a:hover {
            color: var(--primary);
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .main-nav a.active::after {
            width: 100%;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-left: auto;
        }
        .mega-trigger {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            border: 1px solid var(--border);
            background: var(--white);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all .2s;
            font-size: 18px;
            color: var(--text);
        }
        .mega-trigger:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .header-login-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            transition: all .2s;
            white-space: nowrap;
        }
        .header-login-btn:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 12px rgba(40, 103, 208, 0.25);
        }
        .mega-panel {
            position: absolute;
            top: 72px;
            left: 0;
            right: 0;
            background: var(--white);
            border-radius: 0 0 16px 16px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border);
            border-top: none;
            opacity: 0;
            visibility: hidden;
            transform: translateY(8px);
            transition: all .25s ease;
            z-index: 1029;
        }
        .mega-panel.open {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .mega-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 40px 32px;
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 48px;
        }
        .mega-col h6 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border);
            position: relative;
        }
        .mega-col h6::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -1px;
            width: 24px;
            height: 2px;
            background: var(--primary);
        }
        .mega-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .mega-col ul li {
            margin-bottom: 12px;
        }
        .mega-col ul li a {
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 6px 10px;
            border-radius: 8px;
            transition: all .2s;
        }
        .mega-col ul li a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .mega-col ul li a .new-dot {
            width: 6px;
            height: 6px;
            background: var(--warning);
            border-radius: 50%;
            flex-shrink: 0;
        }
        .mega-col ul li a .time-text {
            font-size: 12px;
            color: var(--text-muted);
            margin-left: auto;
        }
        .mega-col .mega-preview-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 16px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .mega-col .mega-preview-card img {
            width: 100%;
            height: 100px;
            object-fit: cover;
            border-radius: 8px;
        }
        .mega-col .mega-preview-card p {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
        }
        .mega-col .mega-preview-card .btn-primary-custom {
            min-height: 36px;
            padding: 6px 20px;
            font-size: 13px;
        }
        .mega-footer {
            border-top: 1px solid var(--border);
            padding: 16px 32px;
            display: flex;
            justify-content: center;
        }
        .mega-footer a {
            font-size: 14px;
            color: var(--primary);
            font-weight: 600;
        }
        .mega-footer a i {
            margin-left: 4px;
            transition: transform .2s;
        }
        .mega-footer a:hover i {
            transform: translateX(4px);
        }
        .mega-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.3);
            z-index: 1028;
            opacity: 0;
            visibility: hidden;
            transition: all .25s;
        }
        .mega-overlay.open {
            opacity: 1;
            visibility: visible;
        }
        /* Hero */
        .hero-section {
            background: linear-gradient(180deg, #F0F4FC 0%, #FFFFFF 100%);
            position: relative;
            overflow: hidden;
            padding: 72px 0 80px;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(40, 103, 208, 0.06) 0%, transparent 70%);
            bottom: -200px;
            right: -100px;
            pointer-events: none;
        }
        .hero-section .container-custom {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 64px;
            align-items: center;
        }
        .hero-content .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent-light);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 24px;
        }
        .hero-content .hero-badge i {
            font-size: 12px;
        }
        .hero-content h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.4px;
            color: var(--text);
            margin-bottom: 20px;
        }
        .hero-content h1 span {
            color: var(--primary);
        }
        .hero-content .hero-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 500px;
        }
        .hero-cta {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }
        .hero-trust {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-trust .trust-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.6);
            padding: 8px 16px;
            border-radius: 999px;
            border: 1px solid var(--border);
        }
        .hero-trust .trust-item i {
            color: var(--primary);
        }
        .hero-visual {
            position: relative;
        }
        .hero-visual .main-image-card {
            background: #fff;
            border-radius: 24px;
            border: 1px solid var(--border);
            box-shadow: 0 20px 40px rgba(31, 55, 99, 0.12);
            overflow: hidden;
            padding: 12px;
        }
        .hero-visual .main-image-card img {
            width: 100%;
            height: 360px;
            object-fit: cover;
            border-radius: 16px;
            display: block;
        }
        .hero-visual .float-card {
            position: absolute;
            bottom: -20px;
            left: -20px;
            background: #fff;
            border-radius: 16px;
            box-shadow: var(--shadow-lg);
            padding: 16px 20px;
            display: flex;
            align-items: center;
            gap: 12px;
            border: 1px solid var(--border);
        }
        .hero-visual .float-card .status-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--success);
            box-shadow: 0 0 0 4px rgba(31, 163, 107, 0.15);
        }
        .hero-visual .float-card .status-text {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
        }
        .hero-visual .float-card .status-sub {
            font-size: 12px;
            color: var(--text-muted);
        }
        /* Features */
        .features-section {
            padding: 100px 0;
            background: var(--white);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            margin-top: 16px;
        }
        .feature-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 36px 28px;
            transition: all .3s ease;
            border: 1px solid transparent;
        }
        .feature-card:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .feature-card .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            font-size: 18px;
            color: var(--primary);
            transition: all .3s;
        }
        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: #fff;
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        /* Showcase */
        .showcase-section {
            padding: 100px 0;
            background: var(--bg);
        }
        .showcase-item {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
            margin-bottom: 80px;
        }
        .showcase-item:last-child {
            margin-bottom: 0;
        }
        .showcase-item.reverse .showcase-image {
            order: 2;
        }
        .showcase-item.reverse .showcase-content {
            order: 1;
        }
        .showcase-image {}
        .showcase-image .image-wrap {
            background: #fff;
            border-radius: 20px;
            padding: 12px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }
        .showcase-image .image-wrap img {
            width: 100%;
            height: 300px;
            object-fit: cover;
            border-radius: 12px;
        }
        .showcase-content .step-number {
            font-size: 14px;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 1px;
            margin-bottom: 12px;
            text-transform: uppercase;
        }
        .showcase-content h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
        }
        .showcase-content p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .showcase-content ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .showcase-content ul li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 10px;
        }
        .showcase-content ul li i {
            color: var(--success);
            font-size: 14px;
        }
        /* Evidence */
        .evidence-section {
            padding: 100px 0;
            background: var(--white);
        }
        .stats-bar {
            background: var(--primary-light);
            border-radius: 20px;
            padding: 48px 32px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 64px;
        }
        .stats-bar .stat-item {
            text-align: center;
            padding: 0 16px;
            border-left: 1px solid rgba(40, 103, 208, 0.15);
        }
        .stats-bar .stat-item:first-child {
            border-left: none;
        }
        .stats-bar .stat-item .stat-number {
            font-size: 38px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stats-bar .stat-item .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 8px;
        }
        .stats-note {
            text-align: center;
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 16px;
        }
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .testimonial-card {
            background: #F8FAFD;
            border-radius: var(--radius);
            padding: 32px;
            border: 1px solid var(--border);
            transition: all .3s;
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .testimonial-card .testimonial-header {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 20px;
        }
        .testimonial-card .testimonial-header .avatar {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .testimonial-card .testimonial-header .info {}
        .testimonial-card .testimonial-header .info .name {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
        }
        .testimonial-card .testimonial-header .info .role {
            font-size: 13px;
            color: var(--text-muted);
        }
        .testimonial-card .stars {
            color: var(--warning);
            font-size: 14px;
            margin-bottom: 16px;
            display: flex;
            gap: 4px;
        }
        .testimonial-card .testimonial-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        /* News */
        .news-section {
            padding: 100px 0;
            background: var(--bg);
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .card-news {
            background: var(--white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all .3s;
            display: flex;
            flex-direction: column;
            height: 420px;
            cursor: pointer;
        }
        .card-news:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .card-news .card-news-image {
            width: 100%;
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .card-news .card-news-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s;
        }
        .card-news:hover .card-news-image img {
            transform: scale(1.04);
        }
        .card-news .card-news-body {
            padding: 20px 20px 16px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-news .news-category-badge {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 12px;
            align-self: flex-start;
            text-transform: uppercase;
            letter-spacing: .3px;
        }
        .card-news .news-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color .2s;
        }
        .card-news:hover .news-title {
            color: var(--primary);
        }
        .card-news .news-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 16px;
            flex: 1;
        }
        .card-news .news-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--text-muted);
            padding-top: 14px;
            border-top: 1px solid var(--border);
            margin-top: auto;
        }
        .card-news .news-meta .meta-left {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .card-news .news-meta .meta-right {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .card-news .news-meta i {
            font-size: 12px;
        }
        .news-empty {
            background: var(--white);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
            padding: 80px 40px;
            text-align: center;
            grid-column: 1 / -1;
        }
        .news-empty .empty-icon {
            font-size: 48px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .news-empty p {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 20px;
        }
        .news-empty a {
            color: var(--primary);
            font-weight: 600;
        }
        .section-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            margin-bottom: 40px;
            flex-wrap: wrap;
            gap: 16px;
        }
        .section-header .view-all {
            font-size: 14px;
            color: var(--primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap .2s;
        }
        .section-header .view-all:hover {
            gap: 10px;
        }
        /* Pricing */
        .pricing-section {
            padding: 100px 0;
            background: var(--white);
        }
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            align-items: stretch;
        }
        .pricing-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 36px 32px;
            position: relative;
            transition: all .3s;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
        }
        .pricing-card:hover {
            box-shadow: var(--shadow-hover);
        }
        .pricing-card .pricing-plan {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }
        .pricing-card .pricing-plan .plan-tag {
            background: var(--accent-light);
            color: var(--accent);
            font-size: 12px;
            padding: 2px 8px;
            border-radius: 999px;
            margin-left: 8px;
            font-weight: 600;
        }
        .pricing-card .pricing-price {
            font-size: 36px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 4px;
            line-height: 1.2;
        }
        .pricing-card .pricing-price .currency {
            font-size: 18px;
            font-weight: 600;
            vertical-align: top;
            margin-right: 2px;
        }
        .pricing-card .pricing-price .period {
            font-size: 14px;
            font-weight: 400;
            color: var(--text-muted);
        }
        .pricing-card .pricing-desc {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 28px;
        }
        .pricing-card .pricing-features {
            list-style: none;
            padding: 0;
            margin: 0 0 32px;
            flex: 1;
        }
        .pricing-card .pricing-features li {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 14px;
            color: var(--text-secondary);
            padding: 8px 0;
            border-bottom: 1px solid var(--border);
        }
        .pricing-card .pricing-features li:last-child {
            border-bottom: none;
        }
        .pricing-card .pricing-features li i {
            color: var(--success);
            font-size: 13px;
            width: 18px;
            text-align: center;
            flex-shrink: 0;
        }
        .pricing-card .btn-primary-custom,
        .pricing-card .btn-outline-custom {
            width: 100%;
        }
        .pricing-card.featured {
            background: #F5F9FF;
            border: 2px solid var(--primary);
            box-shadow: var(--shadow-lg);
            transform: scale(1.02);
        }
        .pricing-card.featured::before {
            content: '推荐';
            position: absolute;
            top: -15px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 6px 20px;
            border-radius: 999px;
            text-transform: uppercase;
            letter-spacing: 1px;
            white-space: nowrap;
        }
        .pricing-card.featured .pricing-price {
            color: var(--primary);
        }
        .plan-switcher {
            display: inline-flex;
            background: var(--bg);
            border-radius: 999px;
            padding: 4px;
            margin-bottom: 40px;
        }
        .plan-switcher button {
            background: transparent;
            border: none;
            padding: 8px 24px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all .2s;
        }
        .plan-switcher button.active {
            background: var(--white);
            color: var(--primary);
            box-shadow: var(--shadow-sm);
            font-weight: 600;
        }
        /* FAQ */
        .faq-section {
            padding: 100px 0;
            background: var(--bg);
        }
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: #F8FAFD;
            border-radius: 16px;
            padding: 24px 28px;
            margin-bottom: 16px;
            cursor: pointer;
            transition: all .3s;
            border-left: 3px solid transparent;
        }
        .faq-item.active {
            background: #fff;
            border-left-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .faq-item .faq-question {
            display: flex;
            align-items: center;
            gap: 16px;
            justify-content: space-between;
        }
        .faq-item .faq-question h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin: 0;
            flex: 1;
        }
        .faq-item .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--text-secondary);
            transition: transform .3s ease;
            flex-shrink: 0;
            position: relative;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, padding .35s ease;
            padding: 0;
        }
        .faq-item.active .faq-answer {
            max-height: 500px;
            padding-top: 16px;
        }
        .faq-item .faq-answer p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .faq-contact-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 28px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            margin-top: 48px;
            border: 1px solid var(--border);
            flex-wrap: wrap;
        }
        .faq-contact-card p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .faq-contact-card p i {
            color: var(--primary);
            font-size: 22px;
        }
        .faq-contact-card .btn-primary-custom {
            min-height: 44px;
            padding: 10px 28px;
            font-size: 14px;
        }
        /* CTA banner */
        .cta-section {
            padding: 80px 0;
            background: var(--footer-bg);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(40, 103, 208, 0.18);
            top: -200px;
            right: -100px;
        }
        .cta-content {
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .cta-content h2 {
            color: #fff;
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .cta-content p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 15px;
            max-width: 600px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .cta-content .btn-primary-custom {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
        }
        .cta-content .btn-primary-custom:hover {
            background: var(--primary-light);
            border-color: var(--primary-light);
            box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
        }
        .cta-content .btn-outline-custom {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.4);
        }
        .cta-content .btn-outline-custom:hover {
            border-color: #fff;
            color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }
        .cta-content .cta-btns {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        /* Footer */
        .site-footer {
            background: var(--footer-bg);
            color: #B4C1DA;
            padding: 64px 0 0;
            font-size: 14px;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .site-logo .logo-text {
            color: #fff;
        }
        .footer-brand .site-logo .logo-text span {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
        }
        .footer-brand p {
            color: #8A97B0;
            margin-top: 20px;
            line-height: 1.8;
            font-size: 14px;
            max-width: 280px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 24px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #B4C1DA;
            font-size: 14px;
            transition: all .2s;
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer-col h6 {
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 24px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h6::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 20px;
            height: 2px;
            background: var(--primary);
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: #8A97B0;
            font-size: 14px;
            transition: all .2s;
        }
        .footer-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            padding: 24px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: #5E6B85;
            flex-wrap: wrap;
            gap: 12px;
        }
        /* Floating CTA */
        .floating-cta-wrap {
            position: fixed;
            right: 32px;
            bottom: 240px;
            z-index: 1040;
            display: flex;
            flex-direction: column;
            align-items: flex-end;
            gap: 12px;
        }
        .floating-main-btn {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary) 0%, #3D7BDD 100%);
            color: #fff;
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(40, 103, 208, 0.35);
            transition: all .3s;
            animation: breathe 3s infinite;
        }
        .floating-main-btn:hover {
            transform: scale(1.05);
            box-shadow: 0 6px 16px rgba(40, 103, 208, 0.45);
        }
        @keyframes breathe {
            0%,
            100% {
                box-shadow: 0 4px 12px rgba(40, 103, 208, 0.3);
            }
            50% {
                box-shadow: 0 8px 28px rgba(40, 103, 208, 0.45);
            }
        }
        .floating-options {
            display: flex;
            flex-direction: column;
            gap: 8px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: all .25s;
        }
        .floating-cta-wrap.open .floating-options {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .floating-options a {
            background: #fff;
            border-radius: 999px;
            box-shadow: var(--shadow-hover);
            padding: 10px 20px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text);
            white-space: nowrap;
            transition: all .2s;
            width: 140px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .floating-options a i {
            color: var(--primary);
            font-size: 14px;
        }
        .floating-options a:hover {
            color: var(--primary);
            box-shadow: var(--shadow-lg);
        }
        .floating-cta-wrap.hidden {
            opacity: 0;
            pointer-events: none;
            transform: translateY(20px);
            transition: all .3s;
        }
        /* Mobile */
        .mobile-menu-btn {
            display: none;
            background: transparent;
            border: 1px solid var(--border);
            border-radius: 8px;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text);
            cursor: pointer;
        }
        .mobile-drawer {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: #fff;
            z-index: 1050;
            padding: 24px;
            transform: translateX(-100%);
            transition: transform .3s ease;
            overflow-y: auto;
        }
        .mobile-drawer.open {
            transform: translateX(0);
        }
        .mobile-drawer-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 32px;
        }
        .mobile-drawer-close {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            border: 1px solid var(--border);
            background: transparent;
            font-size: 18px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .mobile-drawer-nav {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .mobile-drawer-nav a {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
        }
        .mobile-drawer-nav a:hover {
            color: var(--primary);
        }
        .mobile-drawer-nav a.active {
            color: var(--primary);
        }
        /* Responsive */
        @media (max-width: 991px) {
            .main-nav {
                display: none;
            }
            .header-login-btn {
                display: none;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .hero-section .container-custom {
                grid-template-columns: 1fr;
                gap: 48px;
            }
            .hero-content h1 {
                font-size: 32px;
            }
            .hero-visual .main-image-card img {
                height: 260px;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .showcase-item {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .showcase-item.reverse .showcase-image {
                order: 1;
            }
            .showcase-item.reverse .showcase-content {
                order: 2;
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .pricing-grid {
                grid-template-columns: 1fr;
                max-width: 480px;
                margin: 0 auto;
            }
            .pricing-card.featured {
                transform: none;
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
            .mega-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 767px) {
            .section-padding {
                padding-top: 64px;
                padding-bottom: 64px;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .pricing-grid {
                grid-template-columns: 1fr;
            }
            .hero-content h1 {
                font-size: 28px;
            }
            .hero-cta {
                flex-direction: column;
            }
            .hero-cta .btn-primary-custom,
            .hero-cta .btn-outline-custom {
                width: 100%;
            }
            .stats-bar {
                grid-template-columns: 1fr 1fr;
            }
            .card-news {
                height: auto;
                min-height: 400px;
            }
            .faq-contact-card {
                flex-direction: column;
                text-align: center;
                padding: 24px;
            }
            .cta-content h2 {
                font-size: 22px;
            }
            .floating-cta-wrap {
                right: 16px;
                bottom: 180px;
            }
            .floating-main-btn {
                width: 48px;
                height: 48px;
                font-size: 18px;
            }
            .section-header {
                flex-direction: column;
                align-items: flex-start;
            }
            .site-logo .logo-text {
                font-size: 16px;
            }
            .site-logo .logo-text span {
                display: none;
            }
        }

/* roulang page: category1 */
:root {
        --bg-body: #F6F8FC;
        --bg-card: #FFFFFF;
        --bg-footer: #1F2A44;
        --primary: #2867D0;
        --primary-light: #E8F1FE;
        --accent: #17B3A6;
        --success: #1FA36B;
        --warning: #F59E0B;
        --danger: #DC4B4B;
        --text-main: #1D2333;
        --text-secondary: #5E6B85;
        --text-muted: #8A97B0;
        --border: #E3E9F2;
        --radius-card: 16px;
        --radius-btn: 10px;
        --shadow-card: 0 2px 8px rgba(31, 55, 99, 0.06);
        --shadow-hover: 0 10px 24px rgba(31, 55, 99, 0.12);
        --shadow-float: 0 12px 32px rgba(31, 55, 99, 0.14);
        --transition: all 0.3s ease;
    }

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

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

    body {
        font-family: -apple-system, "SF Pro SC", "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
        background: var(--bg-body);
        color: var(--text-main);
        line-height: 1.75;
        font-size: 16px;
        -webkit-font-smoothing: antialiased;
    }

    a {
        color: var(--primary);
        text-decoration: none;
        transition: all 0.25s ease;
    }

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

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

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

    .container-1140 {
        max-width: 1140px;
        margin: 0 auto;
        padding: 0 24px;
    }

    /* ========== Header Nav ========== */
    .site-header {
        background: #FFFFFF;
        border-bottom: 1px solid #E7ECF5;
        height: 72px;
        position: sticky;
        top: 0;
        z-index: 1030;
        display: flex;
        align-items: center;
    }

    .site-header .container-custom {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        gap: 32px;
    }

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

    .logo-icon {
        width: 40px;
        height: 40px;
        border-radius: 12px;
        background: linear-gradient(135deg, var(--primary), #3D7BDD);
        color: #ffffff;
        font-size: 20px;
        font-weight: 800;
        display: flex;
        align-items: center;
        justify-content: center;
        letter-spacing: -0.5px;
        box-shadow: 0 4px 12px rgba(40, 103, 208, 0.25);
    }

    .logo-text {
        font-size: 18px;
        font-weight: 800;
        color: var(--text-main);
        white-space: nowrap;
        letter-spacing: -0.3px;
        display: flex;
        align-items: center;
        gap: 6px;
    }

    .logo-text span {
        font-size: 11px;
        font-weight: 600;
        color: var(--primary);
        background: var(--primary-light);
        padding: 2px 8px;
        border-radius: 999px;
        letter-spacing: 0.5px;
    }

    .main-nav {
        display: flex;
        align-items: center;
        gap: 28px;
    }

    .main-nav a {
        font-size: 16px;
        font-weight: 500;
        color: var(--text-secondary);
        padding: 8px 0;
        position: relative;
        white-space: nowrap;
    }

    .main-nav a::after {
        content: "";
        position: absolute;
        bottom: 0;
        left: 0;
        width: 0;
        height: 2px;
        background: var(--primary);
        border-radius: 2px;
        transition: width 0.3s ease;
    }

    .main-nav a:hover,
    .main-nav a.active {
        color: var(--primary);
    }

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

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

    .nav-toggle {
        display: none;
        background: none;
        border: none;
        font-size: 24px;
        color: var(--text-main);
        cursor: pointer;
        padding: 4px 8px;
        border-radius: 8px;
        transition: background 0.25s ease;
    }

    .nav-toggle:hover {
        background: var(--bg-body);
    }

    /* Mobile menu */
    .mobile-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        bottom: 0;
        background: #FFFFFF;
        z-index: 1029;
        padding: 32px 24px;
        display: none;
        flex-direction: column;
        gap: 8px;
        overflow-y: auto;
        box-shadow: 0 20px 40px rgba(31, 55, 99, 0.1);
    }

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

    .mobile-menu a {
        font-size: 18px;
        font-weight: 600;
        color: var(--text-main);
        padding: 14px 12px;
        border-radius: 12px;
        transition: all 0.25s ease;
    }

    .mobile-menu a:hover,
    .mobile-menu a.active {
        background: var(--primary-light);
        color: var(--primary);
    }

    /* ========== Buttons ========== */
    .btn-custom {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        font-size: 15px;
        font-weight: 600;
        padding: 0 28px;
        height: 48px;
        border-radius: var(--radius-btn);
        border: none;
        cursor: pointer;
        transition: all 0.3s ease;
        text-decoration: none;
        white-space: nowrap;
    }

    .btn-primary-custom {
        background: var(--primary);
        color: #ffffff;
        box-shadow: 0 2px 8px rgba(40, 103, 208, 0.2);
    }

    .btn-primary-custom:hover {
        background: #1e56b8;
        color: #ffffff;
        box-shadow: 0 4px 12px rgba(40, 103, 208, 0.25);
        filter: brightness(0.95);
        transform: translateY(-1px);
    }

    .btn-primary-custom:active {
        transform: translateY(1px);
        box-shadow: 0 2px 6px rgba(40, 103, 208, 0.2);
    }

    .btn-outline-custom {
        background: #ffffff;
        color: var(--text-main);
        border: 1px solid #D7DEF0;
    }

    .btn-outline-custom:hover {
        border-color: var(--primary);
        color: var(--primary);
        background: #ffffff;
        transform: translateY(-1px);
        box-shadow: 0 4px 12px rgba(31, 55, 99, 0.08);
    }

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

    .btn-sm-custom {
        height: 36px;
        padding: 0 18px;
        font-size: 14px;
        border-radius: 999px;
    }

    .btn-block-mobile {
        width: auto;
    }

    /* ========== Category Hero ========== */
    .category-hero {
        background: linear-gradient(135deg, #F6F8FC 0%, #EAF0FA 50%, #FFFFFF 100%);
        position: relative;
        padding: 64px 0 48px;
        overflow: hidden;
        border-bottom: 1px solid var(--border);
    }

    .category-hero .container-custom {
        position: relative;
        z-index: 2;
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 32px;
    }

    .category-hero-left {
        flex: 1 1 520px;
        max-width: 680px;
    }

    .category-hero h1 {
        font-size: 38px;
        font-weight: 800;
        letter-spacing: -0.4px;
        color: var(--text-main);
        margin-bottom: 16px;
        line-height: 1.3;
    }

    .category-hero .hero-subtitle {
        font-size: 16px;
        color: var(--text-secondary);
        line-height: 1.7;
        margin-bottom: 0;
        max-width: 520px;
    }

    .category-hero-right {
        flex: 0 0 320px;
        position: relative;
    }

    .category-hero-right img {
        border-radius: 20px;
        box-shadow: 0 20px 40px rgba(31, 55, 99, 0.12);
        object-fit: cover;
        width: 100%;
        height: 200px;
        border: 1px solid rgba(255, 255, 255, 0.8);
    }

    .hero-hero-badge {
        position: absolute;
        bottom: -12px;
        left: 20px;
        background: #ffffff;
        border-radius: 12px;
        padding: 8px 16px;
        box-shadow: var(--shadow-hover);
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        font-weight: 600;
        color: var(--text-main);
        border: 1px solid var(--border);
    }

    .hero-hero-badge .dot {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: var(--success);
        animation: pulse 2s infinite;
    }

    @keyframes pulse {
        0%, 100% { opacity: 1; transform: scale(1); }
        50% { opacity: 0.6; transform: scale(0.85); }
    }

    /* ========== Breadcrumb ========== */
    .breadcrumb-bar {
        background: #ffffff;
        border-bottom: 1px solid var(--border);
        padding: 12px 0;
    }

    .breadcrumb-bar .container-custom {
        display: flex;
        align-items: center;
        justify-content: flex-start;
        font-size: 14px;
        color: var(--text-muted);
    }

    .breadcrumb-bar a {
        color: var(--text-secondary);
        text-decoration: none;
        transition: color 0.25s ease;
    }

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

    .breadcrumb-bar .sep {
        margin: 0 10px;
        color: var(--text-muted);
    }

    .breadcrumb-bar .current {
        color: var(--text-secondary);
        font-weight: 500;
    }

    /* ========== Section Spacing ========== */
    .section-block {
        padding: 88px 0;
    }

    .section-block-bottom {
        padding: 0 0 88px;
    }

    .section-tag {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 14px;
        font-weight: 600;
        color: var(--primary);
        background: var(--primary-light);
        padding: 4px 14px;
        border-radius: 999px;
        margin-bottom: 20px;
        letter-spacing: 0.3px;
    }

    .section-title {
        font-size: 30px;
        font-weight: 700;
        letter-spacing: -0.4px;
        color: var(--text-main);
        margin-bottom: 8px;
        line-height: 1.3;
    }

    .section-divider {
        width: 32px;
        height: 4px;
        background: var(--primary);
        border-radius: 4px;
        margin-top: 10px;
        margin-bottom: 28px;
    }

    .section-desc {
        font-size: 15px;
        color: var(--text-secondary);
        line-height: 1.7;
        max-width: 640px;
        margin-bottom: 40px;
    }

    /* ========== Intro Card ========== */
    .intro-card {
        background: #ffffff;
        border-radius: var(--radius-card);
        border: 1px solid var(--border);
        padding: 36px 40px;
        box-shadow: var(--shadow-card);
    }

    .intro-card p {
        font-size: 15px;
        color: var(--text-secondary);
        line-height: 1.8;
        margin-bottom: 14px;
    }

    .intro-card p:last-child {
        margin-bottom: 0;
    }

    .intro-card .intro-strong {
        color: var(--text-main);
        font-weight: 600;
    }

    /* ========== Feature Cards ========== */
    .feature-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
    }

    .feature-card {
        background: var(--bg-card);
        border-radius: var(--radius-card);
        padding: 32px 28px;
        border: 1px solid var(--border);
        box-shadow: var(--shadow-card);
        transition: var(--transition);
        text-align: center;
    }

    .feature-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-hover);
        border-color: rgba(40, 103, 208, 0.3);
    }

    .feature-icon {
        width: 52px;
        height: 52px;
        border-radius: 50%;
        background: var(--primary-light);
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 20px;
        font-size: 22px;
        color: var(--primary);
        transition: var(--transition);
    }

    .feature-card:hover .feature-icon {
        background: linear-gradient(135deg, var(--primary), #3D7BDD);
        color: #ffffff;
        transform: scale(1.05);
    }

    .feature-card h3 {
        font-size: 18px;
        font-weight: 600;
        color: var(--text-main);
        margin-bottom: 10px;
    }

    .feature-card p {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.65;
        margin-bottom: 0;
    }

    /* ========== Process Steps ========== */
    .process-list {
        display: flex;
        flex-direction: column;
        gap: 20px;
        max-width: 780px;
        margin: 0 auto;
    }

    .process-item {
        display: flex;
        align-items: flex-start;
        gap: 20px;
        background: #ffffff;
        border-radius: var(--radius-card);
        padding: 28px 32px;
        border: 1px solid var(--border);
        box-shadow: var(--shadow-card);
        transition: var(--transition);
        position: relative;
    }

    .process-item:hover {
        box-shadow: var(--shadow-hover);
        transform: translateX(4px);
        border-left: 3px solid var(--primary);
    }

    .process-num {
        flex-shrink: 0;
        width: 44px;
        height: 44px;
        border-radius: 12px;
        background: var(--primary-light);
        color: var(--primary);
        font-size: 18px;
        font-weight: 800;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: var(--transition);
    }

    .process-item:hover .process-num {
        background: var(--primary);
        color: #ffffff;
    }

    .process-content h3 {
        font-size: 17px;
        font-weight: 600;
        color: var(--text-main);
        margin-bottom: 6px;
    }

    .process-content p {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.65;
        margin-bottom: 0;
    }

    /* ========== News Cards ========== */
    .card-news {
        background: #ffffff;
        border-radius: var(--radius-card);
        overflow: hidden;
        border: 1px solid var(--border);
        box-shadow: var(--shadow-card);
        transition: var(--transition);
        height: 100%;
        display: flex;
        flex-direction: column;
    }

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

    .card-news-img {
        width: 100%;
        height: 180px;
        object-fit: cover;
        border-bottom: 1px solid var(--border);
    }

    .card-news-body {
        padding: 24px;
        display: flex;
        flex-direction: column;
        flex: 1;
    }

    .card-news .news-badge {
        display: inline-block;
        font-size: 11px;
        font-weight: 600;
        color: var(--primary);
        background: var(--primary-light);
        padding: 3px 10px;
        border-radius: 999px;
        margin-bottom: 12px;
        align-self: flex-start;
        letter-spacing: 0.3px;
    }

    .card-news .news-title {
        font-size: 18px;
        font-weight: 600;
        color: var(--text-main);
        line-height: 1.4;
        margin-bottom: 10px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .card-news .news-excerpt {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.7;
        margin-bottom: 16px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        flex: 1;
    }

    .card-news .news-meta {
        display: flex;
        align-items: center;
        justify-content: space-between;
        font-size: 13px;
        color: var(--text-muted);
        border-top: 1px solid #F0F3F8;
        padding-top: 14px;
        margin-top: auto;
    }

    .card-news .news-meta i {
        font-size: 12px;
        margin-right: 4px;
    }

    /* ========== FAQ ========== */
    .faq-wrap {
        max-width: 800px;
        margin: 0 auto;
    }

    .faq-wrap .accordion-item {
        background: #ffffff;
        border: 1px solid var(--border);
        border-radius: var(--radius-card) !important;
        margin-bottom: 16px;
        box-shadow: var(--shadow-card);
        overflow: hidden;
        transition: var(--transition);
    }

    .faq-wrap .accordion-item:last-child {
        margin-bottom: 0;
    }

    .faq-wrap .accordion-item:has(.accordion-button:not(.collapsed)) {
        border-color: rgba(40, 103, 208, 0.35);
        box-shadow: var(--shadow-hover);
    }

    .faq-wrap .accordion-button {
        background: #ffffff;
        color: var(--text-main);
        font-size: 16px;
        font-weight: 600;
        padding: 22px 24px;
        box-shadow: none;
        border: none;
        border-radius: var(--radius-card) !important;
        gap: 16px;
    }

    .faq-wrap .accordion-button::after {
        font-family: "Font Awesome 6 Free";
        content: "\2b";
        font-weight: 900;
        background: none;
        width: 24px;
        height: 24px;
        display: flex;
        align-items: center;
        justify-content: center;
        border: 1px solid #D7DEF0;
        border-radius: 50%;
        font-size: 13px;
        color: var(--primary);
        transition: transform 0.35s ease;
        flex-shrink: 0;
    }

    .faq-wrap .accordion-button:not(.collapsed)::after {
        transform: rotate(45deg);
        background: var(--primary);
        color: #ffffff;
        border-color: var(--primary);
    }

    .faq-wrap .accordion-button:focus {
        box-shadow: none;
        outline: none;
    }

    .faq-wrap .accordion-body {
        padding: 0 24px 22px;
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.75;
        border-top: 1px solid #F0F3F8;
        margin: 0 24px;
        padding: 16px 0 22px;
    }

    /* ========== CTA Section ========== */
    .cta-section {
        padding: 24px 0 88px;
    }

    .cta-card {
        background: linear-gradient(135deg, #1F2A44 0%, #2A3A5E 100%);
        border-radius: 20px;
        padding: 48px 56px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 24px;
        position: relative;
        overflow: hidden;
    }

    .cta-card::after {
        content: "";
        position: absolute;
        right: -40px;
        top: -40px;
        width: 180px;
        height: 180px;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.04);
    }

    .cta-card .cta-left {
        position: relative;
        z-index: 2;
    }

    .cta-card h3 {
        font-size: 24px;
        font-weight: 700;
        color: #ffffff;
        margin-bottom: 8px;
    }

    .cta-card p {
        font-size: 15px;
        color: rgba(255, 255, 255, 0.7);
        margin-bottom: 0;
    }

    .cta-card .cta-btns {
        position: relative;
        z-index: 2;
        display: flex;
        gap: 12px;
        flex-wrap: wrap;
    }

    .cta-card .btn-light-custom {
        background: #ffffff;
        color: var(--text-main);
        border: none;
    }

    .cta-card .btn-light-custom:hover {
        background: #f0f3f8;
        color: var(--primary);
        transform: translateY(-1px);
        box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
    }

    .cta-card .btn-ghost-custom {
        background: rgba(255, 255, 255, 0.1);
        color: #ffffff;
        border: 1px solid rgba(255, 255, 255, 0.3);
    }

    .cta-card .btn-ghost-custom:hover {
        background: rgba(255, 255, 255, 0.2);
        color: #ffffff;
        border-color: rgba(255, 255, 255, 0.5);
        transform: translateY(-1px);
    }

    /* ========== Footer ========== */
    .site-footer {
        background: var(--bg-footer);
        color: rgba(255, 255, 255, 0.75);
        padding: 64px 0 0;
        margin-top: 40px;
    }

    .site-footer .container-custom {
        max-width: 1200px;
    }

    .footer-top {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 48px;
        padding-bottom: 48px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .footer-brand .site-logo {
        margin-bottom: 16px;
    }

    .footer-brand .site-logo .logo-text {
        color: #ffffff;
        font-size: 17px;
    }

    .footer-brand .site-logo .logo-text span {
        background: rgba(255, 255, 255, 0.12);
        color: #ffffff;
    }

    .footer-brand p {
        font-size: 14px;
        line-height: 1.75;
        color: rgba(255, 255, 255, 0.6);
        margin-bottom: 20px;
        max-width: 320px;
    }

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

    .footer-social a {
        width: 36px;
        height: 36px;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.08);
        color: rgba(255, 255, 255, 0.7);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 14px;
        transition: var(--transition);
    }

    .footer-social a:hover {
        background: var(--primary);
        color: #ffffff;
        transform: translateY(-2px);
    }

    .footer-col h6 {
        font-size: 14px;
        font-weight: 600;
        color: rgba(255, 255, 255, 0.9);
        margin-bottom: 20px;
        letter-spacing: 0.5px;
        text-transform: uppercase;
    }

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

    .footer-col ul li {
        margin-bottom: 12px;
    }

    .footer-col ul li a {
        font-size: 14px;
        color: rgba(255, 255, 255, 0.55);
        transition: color 0.25s ease, padding-left 0.25s ease;
        display: inline-block;
    }

    .footer-col ul li a:hover {
        color: #ffffff;
        padding-left: 4px;
    }

    .footer-bottom {
        padding: 24px 0;
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 12px;
        font-size: 13px;
        color: rgba(255, 255, 255, 0.4);
    }

    /* ========== Floating CTA ========== */
    .floating-cta {
        position: fixed;
        right: 24px;
        bottom: 240px;
        z-index: 1040;
        display: flex;
        flex-direction: column;
        align-items: flex-end;
        gap: 12px;
        opacity: 0;
        visibility: hidden;
        transform: translateY(10px);
        transition: opacity 0.4s ease, transform 0.4s ease, visibility 0.4s ease;
    }

    .floating-cta.show {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .floating-cta-main {
        width: 56px;
        height: 56px;
        border-radius: 50%;
        background: linear-gradient(135deg, var(--primary), #3D7BDD);
        color: #ffffff;
        border: none;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 22px;
        cursor: pointer;
        box-shadow: 0 8px 24px rgba(40, 103, 208, 0.35);
        transition: all 0.3s ease;
        position: relative;
        animation: breathe 3s infinite;
    }

    @keyframes breathe {
        0%, 100% { box-shadow: 0 8px 24px rgba(40, 103, 208, 0.35); }
        50% { box-shadow: 0 8px 32px rgba(40, 103, 208, 0.55); }
    }

    .floating-cta-main:hover {
        transform: scale(1.05);
    }

    .floating-cta-menu {
        display: flex;
        flex-direction: column;
        gap: 8px;
        align-items: flex-end;
    }

    .floating-cta-menu a {
        background: #ffffff;
        border-radius: 999px;
        padding: 8px 16px;
        font-size: 13px;
        font-weight: 600;
        color: var(--text-main);
        display: flex;
        align-items: center;
        gap: 6px;
        box-shadow: var(--shadow-hover);
        border: 1px solid var(--border);
        white-space: nowrap;
        transition: var(--transition);
    }

    .floating-cta-menu a:hover {
        color: var(--primary);
        border-color: var(--primary);
        transform: translateX(-4px);
    }

    .floating-cta-menu a i {
        font-size: 14px;
        color: var(--primary);
    }

    /* ========== Pagination ========== */
    .pagination-custom {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        margin-top: 48px;
    }

    .pagination-custom .page-item {
        width: 40px;
        height: 40px;
        border-radius: 10px;
        border: 1px solid var(--border);
        background: #ffffff;
        color: var(--text-secondary);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 14px;
        font-weight: 500;
        cursor: pointer;
        transition: var(--transition);
    }

    .pagination-custom .page-item:hover,
    .pagination-custom .page-item.active {
        background: var(--primary);
        color: #ffffff;
        border-color: var(--primary);
        box-shadow: 0 4px 12px rgba(40, 103, 208, 0.2);
    }

    .pagination-custom .page-item.disabled {
        opacity: 0.4;
        cursor: not-allowed;
        pointer-events: none;
    }

    /* ========== Responsive ========== */
    @media (max-width: 991.98px) {
        .footer-top {
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }

        .footer-brand {
            grid-column: 1 / -1;
        }

        .feature-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .category-hero h1 {
            font-size: 32px;
        }

        .category-hero-right {
            flex-basis: 280px;
        }

        .cta-card {
            padding: 36px 32px;
        }
    }

    @media (max-width: 767.98px) {
        .section-block {
            padding: 64px 0;
        }

        .section-block-bottom {
            padding: 0 0 64px;
        }

        .section-title {
            font-size: 24px;
        }

        .main-nav {
            display: none;
        }

        .nav-toggle {
            display: block;
        }

        .nav-actions .btn-custom {
            display: none;
        }

        .category-hero {
            padding: 40px 0 36px;
        }

        .category-hero-left {
            flex-basis: 100%;
        }

        .category-hero-right {
            flex-basis: 100%;
            max-width: 420px;
        }

        .category-hero-right img {
            height: 180px;
        }

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

        .intro-card {
            padding: 28px 24px;
        }

        .process-item {
            padding: 24px 20px;
            flex-direction: column;
            gap: 12px;
        }

        .card-news-img {
            height: 160px;
        }

        .cta-card {
            padding: 32px 24px;
            flex-direction: column;
            text-align: center;
        }

        .cta-card .cta-btns {
            justify-content: center;
            width: 100%;
        }

        .cta-card .btn-custom {
            flex: 1;
            min-width: 160px;
        }

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

        .footer-brand {
            grid-column: auto;
        }

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

        .floating-cta {
            right: 16px;
            bottom: 180px;
        }

        .floating-cta-main {
            width: 48px;
            height: 48px;
            font-size: 18px;
        }

        .pagination-custom {
            flex-wrap: wrap;
        }

        .pagination-custom .page-item {
            width: 36px;
            height: 36px;
            font-size: 13px;
        }
    }

    @media (min-width: 768px) and (max-width: 991.98px) {
        .feature-grid {
            grid-template-columns: repeat(2, 1fr);
        }
    }

/* roulang page: article */
:root {
            --bg: #F6F8FC;
            --card-bg: #FFFFFF;
            --footer-bg: #1F2A44;
            --primary: #2867D0;
            --primary-light: #E8F1FE;
            --primary-grad: linear-gradient(135deg, #2867D0, #3D7BDD);
            --accent: #17B3A6;
            --success: #1FA36B;
            --warning: #F59E0B;
            --error: #DC4B4B;
            --text-main: #1D2333;
            --text-secondary: #5E6B85;
            --text-weak: #8A97B0;
            --border: #E3E9F2;
            --shadow-sm: 0 2px 8px rgba(31, 55, 99, 0.06);
            --shadow-hover: 0 10px 24px rgba(31, 55, 99, 0.12);
            --shadow-lg: 0 12px 32px rgba(31, 55, 99, 0.14);
            --radius: 16px;
            --radius-sm: 10px;
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, "SF Pro SC", "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-main);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

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

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

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

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

        .btn {
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            padding: 12px 24px;
            transition: var(--transition);
            border: 1px solid transparent;
        }

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

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

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

        .btn-primary:hover {
            background: var(--primary);
            border-color: var(--primary);
            filter: brightness(0.95);
            box-shadow: 0 4px 12px rgba(40, 103, 208, 0.25);
            color: #fff;
        }

        .btn-outline-primary {
            background: #fff;
            border-color: #d7def0;
            color: var(--text-main);
        }

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

        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: #fff;
            border-bottom: 1px solid var(--border);
            height: 72px;
            display: flex;
            align-items: center;
            box-shadow: 0 1px 4px rgba(31, 55, 99, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 20px;
            position: relative;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--primary-grad);
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 18px;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.2;
            white-space: nowrap;
        }

        .logo-text span {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: 999px;
            padding: 1px 8px;
            margin-left: 4px;
            vertical-align: middle;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-left: 20px;
        }

        .main-nav a {
            display: inline-block;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            position: relative;
            transition: var(--transition);
        }

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

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

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

        .mega-trigger {
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            background: #fff;
            color: var(--text-secondary);
            font-size: 16px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .mega-trigger:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        .mega-panel {
            position: fixed;
            top: 72px;
            left: 50%;
            transform: translateX(-50%) translateY(-8px);
            width: min(900px, calc(100vw - 40px));
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow-lg);
            padding: 32px;
            opacity: 0;
            visibility: hidden;
            transition: all 0.25s ease;
            z-index: 1029;
            border: 1px solid var(--border);
        }

        .mega-panel.open {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }

        .mega-panel::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(29, 35, 51, 0.25);
            z-index: -1;
            display: none;
        }

        .mega-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 32px;
        }

        .mega-col h6 {
            font-size: 13px;
            font-weight: 700;
            color: var(--text-weak);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }

        .mega-col a {
            display: block;
            padding: 8px 12px;
            border-radius: 8px;
            color: var(--text-secondary);
            font-size: 14px;
            margin-bottom: 4px;
            transition: var(--transition);
        }

        .mega-col a:hover {
            background: #f0f4fb;
            color: var(--primary);
        }

        .mega-col .new-dot {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            font-size: 10px;
            border-radius: 999px;
            padding: 1px 6px;
            margin-right: 6px;
            vertical-align: 1px;
        }

        .mega-col img {
            width: 100%;
            height: 96px;
            object-fit: cover;
            border-radius: 10px;
            margin-bottom: 12px;
        }

        .mega-footer {
            border-top: 1px solid var(--border);
            padding-top: 16px;
            margin-top: 24px;
            text-align: right;
        }

        .mega-footer a {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            background: #fff;
            font-size: 16px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
        }

        .mobile-drawer {
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            bottom: 0;
            background: #fff;
            z-index: 1028;
            padding: 32px 24px;
            overflow-y: auto;
            transform: translateY(-100%);
            transition: transform 0.3s ease;
            visibility: hidden;
        }

        .mobile-drawer.open {
            transform: translateY(0);
            visibility: visible;
        }

        .mobile-drawer a {
            display: block;
            padding: 14px 0;
            font-size: 16px;
            color: var(--text-main);
            border-bottom: 1px solid var(--border);
        }

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

        .mobile-drawer .drawer-cta {
            display: flex;
            gap: 12px;
            margin-top: 24px;
        }

        .mobile-drawer .drawer-cta .btn {
            flex: 1;
        }

        .article-page {
            background: var(--bg);
            padding: 32px 0 80px;
        }

        .breadcrumb-custom {
            margin-bottom: 24px;
        }

        .breadcrumb-custom .breadcrumb {
            background: transparent;
            padding: 0;
            margin: 0;
            font-size: 13px;
        }

        .breadcrumb-custom .breadcrumb-item a {
            color: var(--text-weak);
        }

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

        .breadcrumb-custom .breadcrumb-item.active {
            color: var(--text-secondary);
        }

        .breadcrumb-custom .breadcrumb-item+.breadcrumb-item::before {
            content: '/';
            color: var(--text-weak);
            padding: 0 8px;
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 32px;
            align-items: start;
        }

        .article-main-col {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            padding: 40px 44px;
            min-width: 0;
        }

        .article-header {
            margin-bottom: 24px;
        }

        .article-header h1 {
            font-size: 30px;
            font-weight: 800;
            line-height: 1.35;
            color: var(--text-main);
            letter-spacing: -0.3px;
            margin-bottom: 16px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-weak);
            padding: 12px 0;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

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

        .article-meta .category-badge {
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 999px;
            padding: 3px 12px;
            font-size: 12px;
            font-weight: 600;
        }

        .article-cover {
            margin-bottom: 32px;
        }

        .article-cover img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            border-radius: 12px;
        }

        .article-content {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-main);
            max-width: 720px;
            margin: 0 auto;
        }

        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-main);
            margin: 40px 0 16px;
            padding-left: 14px;
            border-left: 4px solid var(--primary);
            line-height: 1.4;
        }

        .article-content h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            margin: 32px 0 12px;
        }

        .article-content p {
            margin-bottom: 20px;
            line-height: 1.8;
            color: var(--text-main);
        }

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

        .article-content li {
            margin-bottom: 8px;
            line-height: 1.7;
        }

        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--bg);
            padding: 16px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
            color: var(--text-secondary);
            font-style: normal;
        }

        .article-content img {
            border-radius: 12px;
            margin: 24px 0;
            width: 100%;
            height: auto;
        }

        .article-content figure {
            margin: 24px 0;
        }

        .article-content figcaption {
            font-size: 13px;
            color: var(--text-weak);
            text-align: center;
            margin-top: 8px;
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 14px;
        }

        .article-content table th {
            background: var(--primary-light);
            color: var(--text-main);
            font-weight: 600;
            padding: 12px 16px;
            border: 1px solid var(--border);
        }

        .article-content table td {
            padding: 10px 16px;
            border: 1px solid var(--border);
        }

        .article-content a {
            color: var(--primary);
            border-bottom: 1px solid transparent;
        }

        .article-content a:hover {
            border-bottom-color: var(--accent);
        }

        .article-toc {
            background: var(--bg);
            border-radius: 12px;
            padding: 24px;
            margin-bottom: 32px;
            border: 1px solid var(--border);
        }

        .article-toc .toc-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

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

        .article-toc ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .article-toc li {
            padding: 6px 0;
            border-bottom: 1px dashed var(--border);
            font-size: 14px;
        }

        .article-toc li:last-child {
            border-bottom: none;
        }

        .article-toc a {
            color: var(--text-secondary);
            display: block;
            transition: var(--transition);
        }

        .article-toc a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }

        .tag-badge {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 999px;
            padding: 5px 14px;
            font-size: 13px;
            font-weight: 500;
            transition: var(--transition);
        }

        .tag-badge:hover {
            background: var(--primary);
            color: #fff;
        }

        .post-nav {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }

        .post-nav a {
            flex: 1;
            max-width: 48%;
            padding: 16px 20px;
            background: var(--bg);
            border-radius: 12px;
            transition: var(--transition);
            border: 1px solid transparent;
        }

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

        .post-nav .post-nav-label {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-weak);
            margin-bottom: 6px;
        }

        .post-nav .post-nav-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            display: block;
            line-height: 1.4;
        }

        .post-nav-next {
            text-align: right;
        }

        .post-nav-next .post-nav-label {
            justify-content: flex-end;
        }

        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: 92px;
        }

        .sidebar-card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 24px;
        }

        .sidebar-card h5 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 10px;
        }

        .sidebar-card h5::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 32px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }

        .author-card {
            text-align: center;
        }

        .author-avatar {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--primary-grad);
            color: #fff;
            font-size: 24px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
        }

        .author-card h5 {
            text-align: center;
            padding-bottom: 0;
        }

        .author-card h5::after {
            display: none;
        }

        .author-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 12px 0 16px;
        }

        .author-card .btn {
            width: 100%;
        }

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

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

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

        .related-list a {
            display: block;
            font-size: 14px;
            color: var(--text-main);
            font-weight: 500;
            line-height: 1.4;
            margin-bottom: 4px;
        }

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

        .related-list span {
            font-size: 12px;
            color: var(--text-weak);
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag-cloud .tag-badge {
            font-size: 12px;
            padding: 4px 12px;
        }

        .related-posts-section {
            padding: 64px 0 40px;
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 32px;
        }

        .section-head h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-main);
            position: relative;
            padding-bottom: 10px;
            margin-bottom: 0;
        }

        .section-head h2::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 32px;
            height: 4px;
            background: var(--primary);
            border-radius: 2px;
        }

        .section-head .more-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }

        .related-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
            height: 100%;
            display: block;
            color: var(--text-main);
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            color: var(--text-main);
        }

        .related-card .card-img-wrap {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

        .related-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        .related-card .card-body {
            padding: 16px 20px 20px;
        }

        .related-card .card-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .card-date {
            font-size: 12px;
            color: var(--text-weak);
        }

        .cta-banner {
            background: var(--footer-bg);
            border-radius: var(--radius);
            padding: 40px 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            margin-top: 40px;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            right: -40px;
            top: -40px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(40, 103, 208, 0.2);
        }

        .cta-banner h3 {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .cta-banner p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            margin-bottom: 0;
        }

        .cta-banner .btn {
            flex-shrink: 0;
            background: #fff;
            color: var(--primary);
            border-color: #fff;
            font-weight: 700;
        }

        .cta-banner .btn:hover {
            background: var(--primary-light);
            border-color: var(--primary-light);
            color: var(--primary);
            box-shadow: none;
        }

        .not-found-panel {
            text-align: center;
            padding: 60px 40px;
        }

        .not-found-panel i {
            font-size: 48px;
            color: var(--text-weak);
            display: block;
            margin-bottom: 16px;
        }

        .not-found-panel h2 {
            font-size: 22px;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .not-found-panel p {
            color: var(--text-secondary);
            margin-bottom: 20px;
        }

        .site-footer {
            background: var(--footer-bg);
            color: rgba(255, 255, 255, 0.7);
            padding: 64px 0 32px;
            margin-top: 40px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand .site-logo {
            margin-bottom: 16px;
        }

        .footer-brand .logo-text {
            color: #fff;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 20px;
            max-width: 320px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .footer-col h6 {
            color: rgba(255, 255, 255, 0.9);
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 20px;
        }

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

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

        .footer-col a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: var(--transition);
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 32px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        .float-cta {
            position: fixed;
            right: 24px;
            bottom: 240px;
            z-index: 1040;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
        }

        .float-main {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary-grad);
            color: #fff;
            border: none;
            font-size: 20px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 8px 20px rgba(40, 103, 208, 0.35);
            transition: var(--transition);
            animation: breathe 3s ease-in-out infinite;
        }

        .float-main:hover {
            transform: scale(1.08);
        }

        @keyframes breathe {
            0%,
            100% {
                box-shadow: 0 8px 20px rgba(40, 103, 208, 0.35);
            }
            50% {
                box-shadow: 0 8px 28px rgba(40, 103, 208, 0.45);
            }
        }

        .float-menu {
            display: flex;
            flex-direction: column;
            gap: 8px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(8px);
            transition: all 0.25s ease;
        }

        .float-cta:hover .float-menu,
        .float-cta.open .float-menu {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .float-menu a {
            display: flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            border-radius: 999px;
            padding: 10px 16px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-main);
            box-shadow: var(--shadow-hover);
            white-space: nowrap;
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .float-menu a:hover {
            color: var(--primary);
            border-color: var(--primary);
        }

        .float-menu a i {
            color: var(--primary);
        }

        @media (max-width: 991.98px) {
            .article-layout {
                grid-template-columns: 1fr;
            }

            .article-sidebar {
                display: none !important;
            }

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

            .mega-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

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

        @media (max-width: 767.98px) {
            .main-nav {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .mega-trigger {
                display: none;
            }

            .article-main-col {
                padding: 24px 20px;
                border-radius: 12px;
            }

            .article-header h1 {
                font-size: 22px;
            }

            .article-cover img {
                height: 220px;
            }

            .article-content {
                font-size: 15px;
            }

            .article-content h2 {
                font-size: 20px;
            }

            .post-nav {
                flex-direction: column;
            }

            .post-nav a {
                max-width: 100%;
            }

            .post-nav-next {
                text-align: left;
            }

            .post-nav-next .post-nav-label {
                justify-content: flex-start;
            }

            .cta-banner {
                flex-direction: column;
                padding: 32px 24px;
                text-align: center;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
            }

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

            .page-banner {
                padding: 32px 0;
            }

            .section-head h2 {
                font-size: 22px;
            }

            .float-cta {
                right: 16px;
                bottom: 30px;
            }

            .float-main {
                width: 48px;
                height: 48px;
                font-size: 18px;
            }

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

        @media (max-width: 575.98px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }

            .logo-text {
                font-size: 16px;
            }

            .article-meta span {
                gap: 4px;
            }

            .article-cover img {
                height: 180px;
            }

            .related-card .card-img-wrap {
                height: 160px;
            }
        }