/* roulang page: index */
:root {
            --primary: #0f1e3a;
            --primary-light: #1b3a5e;
            --primary-dark: #0a1526;
            --accent: #f59e0b;
            --accent-hover: #d97706;
            --accent-light: #fef3c7;
            --bg: #f6f8fb;
            --bg-white: #ffffff;
            --bg-dark: #0f1e3a;
            --text: #1e293b;
            --text-light: #64748b;
            --text-white: #f8fafc;
            --border: #e2e8f0;
            --radius: 14px;
            --radius-lg: 22px;
            --shadow: 0 4px 24px rgba(15, 30, 58, 0.08);
            --shadow-lg: 0 12px 44px rgba(15, 30, 58, 0.14);
            --transition: all 0.3s ease;
        }

        /* Reset / Base */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
        }

        input {
            font-family: inherit;
            outline: none;
        }

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

        /* ============ HEADER ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 16px rgba(15, 30, 58, 0.06);
        }

        .header-top {
            padding: 14px 0;
        }

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

        .brand {
            font-size: 1.45rem;
            font-weight: 900;
            letter-spacing: -0.03em;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }

        .brand-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--accent), #fbbf24);
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--primary);
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.35);
            flex-shrink: 0;
        }

        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 4px 6px 4px 18px;
            max-width: 360px;
            flex: 1;
            transition: var(--transition);
        }

        .header-search:focus-within {
            border-color: var(--accent);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.12);
        }

        .header-search input {
            background: transparent;
            border: none;
            flex: 1;
            font-size: 0.92rem;
            color: var(--text);
            padding: 8px 0;
            width: 100%;
        }

        .header-search input::placeholder {
            color: #94a3b8;
        }

        .header-search button {
            background: var(--primary);
            color: #fff;
            border-radius: 999px;
            padding: 8px 20px;
            font-size: 0.85rem;
            font-weight: 600;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }

        .header-search button:hover {
            background: var(--primary-light);
        }

        .btn-header {
            background: linear-gradient(135deg, var(--accent), #fbbf24);
            color: var(--primary);
            padding: 10px 24px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.35);
            transition: var(--transition);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-header:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(245, 158, 11, 0.45);
        }

        /* Channel Bar */
        .channel-bar {
            background: var(--primary);
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }

        .channel-bar::-webkit-scrollbar {
            display: none;
        }

        .channel-nav {
            display: flex;
            gap: 6px;
            padding: 10px 24px;
            max-width: 1200px;
            margin: 0 auto;
            white-space: nowrap;
        }

        .channel-link {
            color: rgba(255, 255, 255, 0.75);
            padding: 7px 22px;
            border-radius: 999px;
            font-size: 0.92rem;
            font-weight: 500;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .channel-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.12);
        }

        .channel-link.active {
            background: var(--accent);
            color: var(--primary);
            font-weight: 700;
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
        }

        /* ============ HERO ============ */
        .hero {
            position: relative;
            padding: 110px 0 90px;
            background: linear-gradient(135deg, rgba(10, 21, 38, 0.95) 0%, rgba(15, 30, 58, 0.88) 40%, rgba(27, 58, 94, 0.75) 100%),
                url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            color: var(--text-white);
            overflow: hidden;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -60px;
            right: -40px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 820px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 999px;
            padding: 6px 18px;
            font-size: 0.85rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(8px);
            margin-bottom: 28px;
        }

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

        .hero-title {
            font-size: 3.2rem;
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.03em;
            margin: 0 0 18px;
        }

        .hero-title span {
            background: linear-gradient(90deg, var(--accent), #fbbf24);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 640px;
            line-height: 1.8;
            margin: 0 0 36px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--accent), #fbbf24);
            color: var(--primary);
            padding: 14px 32px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 1.05rem;
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.35);
            transition: var(--transition);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 32px rgba(245, 158, 11, 0.5);
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            border: 2px solid rgba(255, 255, 255, 0.4);
            color: #fff;
            padding: 12px 28px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            background: transparent;
        }

        .btn-outline-light:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(255, 255, 255, 0.05);
        }

        /* ============ SECTION ============ */
        .section {
            padding: 90px 0;
        }

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

        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }

        .section-tag {
            display: inline-block;
            background: var(--accent-light);
            color: #92400e;
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            padding: 5px 16px;
            border-radius: 999px;
            margin-bottom: 14px;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--primary);
            margin: 0 0 14px;
            letter-spacing: -0.02em;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ============ STATS ============ */
        .stats-section {
            margin-top: -40px;
            position: relative;
            z-index: 10;
        }

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

        .stat-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid rgba(226, 232, 240, 0.6);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .stat-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--accent-light), #fde68a);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #92400e;
            font-size: 1.3rem;
            margin: 0 auto 18px;
        }

        .stat-number {
            font-size: 2rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .stat-label {
            font-size: 0.92rem;
            color: var(--text-light);
        }

        /* ============ SERVICES ============ */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .service-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            border: 1px solid rgba(226, 232, 240, 0.6);
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), #fbbf24);
            opacity: 0;
            transition: var(--transition);
        }

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

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }

        .service-icon {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 1.5rem;
            margin-bottom: 24px;
            box-shadow: 0 8px 20px rgba(15, 30, 58, 0.2);
        }

        .service-card:nth-child(2) .service-icon {
            background: linear-gradient(135deg, var(--accent), #fbbf24);
            color: var(--primary);
        }

        .service-card:nth-child(3) .service-icon {
            background: #f0f9ff;
            color: #0369a1;
        }

        .service-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary);
            margin: 0 0 12px;
        }

        .service-desc {
            color: var(--text-light);
            font-size: 0.98rem;
            line-height: 1.7;
            margin: 0;
        }

        .service-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent-dark);
            font-weight: 600;
            font-size: 0.92rem;
            margin-top: 20px;
            transition: var(--transition);
        }

        .service-link:hover {
            gap: 12px;
            color: var(--accent-hover);
        }

        /* ============ ABOUT ============ */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .about-media {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

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

        .about-media:hover img {
            transform: scale(1.03);
        }

        .about-media-badge {
            position: absolute;
            bottom: 20px;
            left: 20px;
            background: rgba(255, 255, 255, 0.95);
            border-radius: 16px;
            padding: 14px 22px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .about-media-badge i {
            font-size: 1.4rem;
            color: var(--accent);
        }

        .about-media-badge span {
            font-weight: 700;
            color: var(--primary);
            font-size: 0.95rem;
        }

        .about-content .section-tag {
            display: inline-block;
        }

        .about-content h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            margin: 0 0 18px;
            line-height: 1.3;
        }

        .about-content p {
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin: 28px 0;
        }

        .about-feature {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            background: var(--bg);
            padding: 16px;
            border-radius: 14px;
            border-left: 3px solid var(--accent);
        }

        .about-feature i {
            color: var(--accent);
            font-size: 1.1rem;
            margin-top: 2px;
        }

        .about-feature strong {
            display: block;
            color: var(--primary);
            font-size: 0.95rem;
        }

        .about-feature small {
            color: var(--text-light);
            font-size: 0.85rem;
            line-height: 1.5;
        }

        /* ============ NEWS ============ */
        .news-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 40px;
            align-items: start;
        }

        .news-main {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            border: 1px solid rgba(226, 232, 240, 0.5);
            overflow: hidden;
        }

        .news-list {
            padding: 8px 0;
        }

        .news-item {
            display: block;
            padding: 24px 28px;
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
            position: relative;
        }

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

        .news-item:hover {
            background: #fafbfd;
            padding-left: 34px;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 8px;
        }

        .news-category {
            background: var(--accent-light);
            color: #92400e;
            font-size: 0.78rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 999px;
        }

        .news-time {
            color: var(--text-light);
            font-size: 0.82rem;
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .news-title {
            font-size: 1.12rem;
            font-weight: 700;
            color: var(--primary);
            margin: 0 0 8px;
            line-height: 1.4;
            transition: var(--transition);
        }

        .news-item:hover .news-title {
            color: var(--accent-dark);
        }

        .news-summary {
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.6;
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-empty {
            padding: 60px 30px;
            text-align: center;
            color: var(--text-light);
            background: var(--bg);
            margin: 20px 28px;
            border-radius: var(--radius);
            font-size: 0.98rem;
            border: 1px dashed var(--border);
        }

        .news-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .news-side-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 24px;
            border: 1px solid rgba(226, 232, 240, 0.5);
        }

        .news-side-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin: 0 0 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--accent);
            display: inline-block;
        }

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

        .side-list li {
            padding: 10px 0;
            border-bottom: 1px solid #f1f5f9;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.92rem;
            color: var(--text);
            transition: var(--transition);
        }

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

        .side-list li:hover {
            color: var(--accent-dark);
            padding-left: 6px;
        }

        .side-list i {
            color: var(--accent);
            font-size: 0.75rem;
        }

        .side-recommend {
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
            box-shadow: var(--shadow);
        }

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

        .side-recommend-content {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 38px 20px 20px;
            background: linear-gradient(transparent, rgba(15, 30, 58, 0.9));
            color: #fff;
        }

        .side-recommend-content span {
            font-size: 0.8rem;
            background: var(--accent);
            color: var(--primary);
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 999px;
            display: inline-block;
            margin-bottom: 8px;
        }

        .side-recommend-content p {
            font-size: 0.95rem;
            font-weight: 600;
            margin: 0;
            line-height: 1.4;
        }

        /* ============ FEATURED ============ */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .featured-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-white);
            box-shadow: var(--shadow);
            border: 1px solid rgba(226, 232, 240, 0.5);
            transition: var(--transition);
        }

        .featured-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }

        .featured-media {
            position: relative;
            height: 190px;
            overflow: hidden;
        }

        .featured-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .featured-card:hover .featured-media img {
            transform: scale(1.06);
        }

        .featured-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(15, 30, 58, 0.85);
            backdrop-filter: blur(6px);
            color: #fff;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 999px;
        }

        .featured-body {
            padding: 24px;
        }

        .featured-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary);
            margin: 0 0 10px;
            line-height: 1.4;
        }

        .featured-body p {
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.6;
            margin: 0 0 16px;
        }

        .featured-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid #f1f5f9;
            padding-top: 14px;
            font-size: 0.85rem;
            color: var(--text-light);
        }

        .featured-meta a {
            color: var(--accent-dark);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .featured-meta a:hover {
            gap: 8px;
        }

        /* ============ TESTIMONIALS ============ */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .testimonial-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow);
            border: 1px solid rgba(226, 232, 240, 0.5);
            position: relative;
            transition: var(--transition);
        }

        .testimonial-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .testimonial-card::before {
            content: '\201C';
            position: absolute;
            top: 8px;
            right: 24px;
            font-size: 5rem;
            color: var(--accent);
            opacity: 0.2;
            line-height: 1;
        }

        .testimonial-rating {
            color: var(--accent);
            margin-bottom: 16px;
            font-size: 0.9rem;
            letter-spacing: 2px;
        }

        .testimonial-text {
            color: var(--text);
            font-size: 0.95rem;
            line-height: 1.8;
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 14px;
            border-top: 1px solid #f1f5f9;
            padding-top: 16px;
        }

        .testimonial-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.95rem;
        }

        .testimonial-name {
            font-weight: 600;
            color: var(--primary);
            font-size: 0.92rem;
        }

        .testimonial-role {
            color: var(--text-light);
            font-size: 0.82rem;
        }

        /* ============ FAQ ============ */
        .faq-wrap {
            max-width: 760px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            margin-bottom: 16px;
            box-shadow: var(--shadow);
            border: 1px solid rgba(226, 232, 240, 0.5);
            overflow: hidden;
            transition: var(--transition);
        }

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

        .faq-question {
            width: 100%;
            background: transparent;
            text-align: left;
            color: var(--primary);
            font-size: 1.02rem;
            font-weight: 600;
            padding: 22px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: var(--transition);
        }

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

        .faq-question i {
            color: var(--accent);
            font-size: 1.1rem;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            background: #fafbfd;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
        }

        .faq-answer p {
            margin: 0;
            padding: 0 24px 24px;
            color: var(--text-light);
            line-height: 1.8;
            font-size: 0.95rem;
        }

        /* ============ CTA ============ */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            padding: 90px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -60px;
            width: 380px;
            height: 380px;
            border: 2px solid rgba(255, 255, 255, 0.06);
            border-radius: 50%;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -40px;
            width: 300px;
            height: 300px;
            border: 2px solid rgba(245, 158, 11, 0.12);
            border-radius: 50%;
        }

        .cta-inner {
            text-align: center;
            position: relative;
            z-index: 2;
            max-width: 680px;
            margin: 0 auto;
            color: #fff;
        }

        .cta-inner h2 {
            font-size: 2.4rem;
            font-weight: 800;
            margin: 0 0 16px;
            line-height: 1.2;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.08rem;
            margin-bottom: 36px;
            line-height: 1.7;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-cta-primary {
            background: linear-gradient(135deg, var(--accent), #fbbf24);
            color: var(--primary);
            padding: 15px 38px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 1.05rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.4);
            transition: var(--transition);
        }

        .btn-cta-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 36px rgba(245, 158, 11, 0.55);
        }

        .btn-cta-outline {
            border: 2px solid rgba(255, 255, 255, 0.4);
            color: #fff;
            padding: 13px 34px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }

        .btn-cta-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(255, 255, 255, 0.06);
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 70px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 50px;
            padding-bottom: 50px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 18px;
        }

        .footer-brand i {
            color: var(--accent);
            font-size: 1.2rem;
            background: rgba(245, 158, 11, 0.15);
            width: 42px;
            height: 42px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .footer-desc {
            font-size: 0.93rem;
            line-height: 1.8;
            max-width: 360px;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin: 0 0 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

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

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

        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.92rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .footer-links a i {
            font-size: 0.7rem;
            color: var(--accent);
        }

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

        .footer-bottom {
            padding: 24px 0;
            text-align: center;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.4);
        }

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

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

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .services-grid,
            .featured-grid,
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .about-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

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

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }

            .hero-title {
                font-size: 2.6rem;
            }

            .section {
                padding: 70px 0;
            }
        }

        @media (max-width: 768px) {
            .header-top-inner {
                flex-wrap: wrap;
            }

            .header-search {
                order: 3;
                max-width: 100%;
                flex-basis: 100%;
            }

            .brand {
                font-size: 1.2rem;
            }

            .btn-header {
                padding: 8px 18px;
                font-size: 0.82rem;
            }

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

            .hero {
                padding: 80px 0 60px;
            }

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

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

            .section-title {
                font-size: 1.7rem;
            }

            .section {
                padding: 60px 0;
            }

            .services-grid,
            .featured-grid,
            .testimonial-grid {
                grid-template-columns: 1fr;
            }

            .about-features {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .cta-inner h2 {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 520px) {
            .container-custom {
                padding: 0 16px;
            }

            .brand {
                font-size: 1.05rem;
            }

            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 0.9rem;
                border-radius: 10px;
            }

            .btn-header {
                display: none;
            }

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

            .hero-badge {
                font-size: 0.75rem;
                padding: 4px 12px;
            }

            .btn-primary,
            .btn-outline-light {
                padding: 12px 22px;
                font-size: 0.9rem;
                width: 100%;
                justify-content: center;
            }

            .hero-actions {
                flex-direction: column;
                gap: 12px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-card {
                padding: 22px 16px;
            }

            .stat-number {
                font-size: 1.5rem;
            }

            .section-title {
                font-size: 1.5rem;
            }

            .channel-nav {
                padding: 8px 16px;
            }

            .channel-link {
                padding: 6px 16px;
                font-size: 0.85rem;
            }

            .news-item {
                padding: 20px;
            }

            .news-item:hover {
                padding-left: 20px;
            }

            .footer-grid {
                gap: 28px;
            }
        }

/* roulang page: category1 */
:root {
            --main: #0f1b2d;
            --accent: #f5b942;
            --secondary: #3b82f6;
            --bg: #f4f6fb;
            --card: #ffffff;
            --text: #1a2233;
            --muted: #5b6b7f;
            --border: #e3e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 8px 30px rgba(15, 27, 45, .08);
            --shadow-lg: 0 20px 50px rgba(15, 27, 45, .12);
            --gap: 24px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            max-width: 100%;
            display: block;
        }
        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        /* header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--main);
            box-shadow: 0 4px 20px rgba(15, 27, 45, .35);
        }
        .header-top {
            border-bottom: 1px solid rgba(255, 255, 255, .08);
            padding: 16px 0;
        }
        .header-top-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 800;
            color: #fff;
            letter-spacing: .5px;
            transition: opacity .3s;
        }
        .brand:hover {
            opacity: .85;
        }
        .brand-icon {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--accent);
            color: var(--main);
            border-radius: 10px;
            font-size: 17px;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: 50px;
            padding: 4px 4px 4px 16px;
            width: 340px;
            max-width: 100%;
            transition: border-color .3s;
        }
        .header-search:focus-within {
            border-color: var(--accent);
        }
        .header-search input {
            flex: 1;
            background: transparent;
            border: none;
            outline: none;
            color: #fff;
            font-size: 14px;
            padding: 8px 0;
        }
        .header-search input::placeholder {
            color: rgba(255, 255, 255, .55);
        }
        .header-search button {
            background: var(--accent);
            color: var(--main);
            border: none;
            border-radius: 50px;
            padding: 8px 18px;
            font-size: 13px;
            font-weight: 600;
            cursor: pointer;
            transition: background .3s;
        }
        .header-search button:hover {
            background: #e0a832;
        }
        .btn-header {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(245, 185, 66, .15);
            border: 1px solid rgba(245, 185, 66, .3);
            color: var(--accent);
            padding: 9px 18px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            transition: all .3s;
        }
        .btn-header:hover {
            background: var(--accent);
            color: var(--main);
        }
        .channel-bar {
            background: rgba(255, 255, 255, .03);
            backdrop-filter: blur(8px);
        }
        .channel-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            overflow-x: auto;
            padding: 6px 0;
            scrollbar-width: none;
        }
        .channel-nav::-webkit-scrollbar {
            display: none;
        }
        .channel-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 20px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, .75);
            white-space: nowrap;
            transition: all .3s;
            border: 1px solid transparent;
        }
        .channel-link i {
            font-size: 13px;
        }
        .channel-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, .08);
        }
        .channel-link.active {
            background: var(--accent);
            color: var(--main);
            font-weight: 700;
        }
        /* hero */
        .cat-hero {
            position: relative;
            background: linear-gradient(135deg, var(--main) 0%, #16263f 55%, #1b3a5e 100%);
            padding: 90px 0 70px;
            overflow: hidden;
        }
        .cat-hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: .18;
        }
        .cat-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to bottom, transparent, var(--bg));
            z-index: 1;
        }
        .cat-hero-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 820px;
            margin: 0 auto;
        }
        .cat-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(245, 185, 66, .15);
            border: 1px solid rgba(245, 185, 66, .3);
            color: var(--accent);
            border-radius: 50px;
            padding: 7px 18px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 24px;
        }
        .cat-hero h1 {
            font-size: 44px;
            line-height: 1.25;
            color: #fff;
            font-weight: 800;
            margin-bottom: 18px;
        }
        .cat-hero h1 span {
            color: var(--accent);
        }
        .cat-hero p {
            color: rgba(255, 255, 255, .85);
            font-size: 17px;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: var(--main);
            font-size: 15px;
            font-weight: 700;
            padding: 13px 28px;
            border-radius: 50px;
            border: none;
            cursor: pointer;
            transition: all .3s;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(245, 185, 66, .35);
        }
        .btn-ghost-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            padding: 13px 28px;
            border-radius: 50px;
            border: 1.5px solid rgba(255, 255, 255, .4);
            cursor: pointer;
            transition: all .3s;
        }
        .btn-ghost-light:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, .08);
        }
        /* stats */
        .stats-section {
            margin-top: -40px;
            position: relative;
            z-index: 5;
            padding-bottom: 40px;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            background: var(--main);
            border-radius: var(--radius);
            padding: 28px 24px;
            text-align: center;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, .08);
            box-shadow: var(--shadow-lg);
            transition: transform .3s;
        }
        .stat-card:hover {
            transform: translateY(-5px);
        }
        .stat-card .stat-icon {
            font-size: 26px;
            color: var(--accent);
            margin-bottom: 12px;
        }
        .stat-card .stat-num {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.2;
        }
        .stat-card .stat-label {
            color: rgba(255, 255, 255, .6);
            font-size: 14px;
            margin-top: 6px;
        }
        /* section */
        .section-block {
            padding: 70px 0;
        }
        .section-header {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 50px;
        }
        .section-header .section-tag {
            display: inline-block;
            background: rgba(245, 185, 66, .12);
            color: #b8860b;
            border-radius: 50px;
            padding: 5px 16px;
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .section-header h2 {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 14px;
        }
        .section-header p {
            color: var(--muted);
            font-size: 16px;
        }
        /* category cards */
        .cat-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .cat-card {
            background: var(--card);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all .35s;
        }
        .cat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .cat-card-cover {
            position: relative;
            height: 220px;
            overflow: hidden;
        }
        .cat-card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s;
        }
        .cat-card:hover .cat-card-cover img {
            transform: scale(1.06);
        }
        .cat-card-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 27, 45, .5), transparent);
        }
        .cat-card-body {
            padding: 26px 24px;
        }
        .cat-card-body h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .cat-card-body h3 i {
            color: var(--accent);
        }
        .cat-card-body p {
            color: var(--muted);
            font-size: 14px;
            margin-bottom: 18px;
        }
        .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 18px;
        }
        .tag {
            background: var(--bg);
            border-radius: 50px;
            padding: 4px 12px;
            font-size: 12px;
            color: var(--muted);
            font-weight: 500;
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--secondary);
            font-size: 14px;
            font-weight: 600;
            transition: gap .3s;
        }
        .card-link:hover {
            gap: 10px;
        }
        /* process */
        .process-section {
            background: var(--main);
            color: #fff;
        }
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .process-item {
            text-align: center;
            padding: 32px 20px;
            background: rgba(255, 255, 255, .04);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, .07);
            transition: background .3s, transform .3s;
        }
        .process-item:hover {
            background: rgba(255, 255, 255, .08);
            transform: translateY(-4px);
        }
        .process-icon {
            width: 62px;
            height: 62px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--main);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 22px;
            box-shadow: 0 8px 25px rgba(245, 185, 66, .35);
        }
        .process-item h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .process-item p {
            color: rgba(255, 255, 255, .65);
            font-size: 13px;
            line-height: 1.6;
        }
        /* feature split */
        .feature-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .feature-split .feature-img {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .feature-split .feature-img img {
            height: 420px;
            object-fit: cover;
        }
        .feature-split .feature-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 27, 45, .3), transparent);
        }
        .feature-list {
            list-style: none;
            margin-top: 24px;
        }
        .feature-list li {
            display: flex;
            gap: 14px;
            margin-bottom: 18px;
            align-items: flex-start;
        }
        .feature-list .check-icon {
            min-width: 26px;
            height: 26px;
            border-radius: 50%;
            background: rgba(245, 185, 66, .15);
            color: #b8860b;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            margin-top: 4px;
        }
        .feature-list h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 3px;
        }
        .feature-list p {
            color: var(--muted);
            font-size: 14px;
        }
        /* faq */
        .faq-grid {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 14px;
            padding: 22px 26px;
            transition: box-shadow .3s;
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
        }
        .faq-question {
            font-size: 16px;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
        }
        .faq-question i {
            color: var(--accent);
            transition: transform .3s;
        }
        .faq-item.active .faq-question i {
            transform: rotate(45deg);
        }
        .faq-answer {
            margin-top: 12px;
            color: var(--muted);
            font-size: 14px;
            line-height: 1.8;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }
        /* cta */
        .cta-section {
            background: linear-gradient(135deg, var(--main) 0%, #16263f 50%, #1b3a5e 100%);
            padding: 70px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section .cta-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: .1;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
        }
        .cta-inner h2 {
            color: #fff;
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-inner p {
            color: rgba(255, 255, 255, .8);
            font-size: 16px;
            max-width: 500px;
            margin: 0 auto 30px;
        }
        /* footer */
        .site-footer {
            background: #0a1320;
            color: rgba(255, 255, 255, .65);
            padding: 60px 0 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-brand i {
            color: var(--accent);
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            max-width: 300px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, .65);
            transition: color .3s, padding-left .3s;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-links i {
            font-size: 10px;
            color: rgba(255, 255, 255, .4);
            transition: color .3s;
        }
        .footer-links a:hover i {
            color: var(--accent);
        }
        .footer-bottom {
            text-align: center;
            padding-top: 24px;
            font-size: 13px;
            color: rgba(255, 255, 255, .4);
        }
        /* responsive */
        @media (max-width:1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cat-cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-split {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .header-search {
                width: 260px;
            }
        }
        @media (max-width:768px) {
            .section-block {
                padding: 50px 0;
            }
            .cat-hero {
                padding: 70px 0 60px;
            }
            .cat-hero h1 {
                font-size: 32px;
            }
            .cat-hero p {
                font-size: 15px;
            }
            .header-top-inner {
                flex-direction: column;
                gap: 14px;
                text-align: center;
            }
            .header-search {
                width: 100%;
            }
            .channel-nav {
                justify-content: flex-start;
                padding: 4px 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }
        @media (max-width:520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .stat-card {
                padding: 20px 16px;
            }
            .stat-card .stat-num {
                font-size: 26px;
            }
            .cat-cards-grid {
                grid-template-columns: 1fr;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .btn-primary,
            .btn-ghost-light {
                padding: 11px 22px;
                font-size: 14px;
            }
            .faq-item {
                padding: 18px;
            }
            .cta-inner h2 {
                font-size: 26px;
            }
        }

/* roulang page: article */
:root {
            --primary: #1e5eff;
            --primary-dark: #1443b3;
            --primary-light: #5b8cff;
            --accent: #ff7a00;
            --accent-light: #ffb066;
            --bg: #f5f7fb;
            --bg-alt: #0b1220;
            --surface: #ffffff;
            --text-strong: #16233a;
            --text: #2d3a4f;
            --text-muted: #6b7a8f;
            --border: #e3e9f2;
            --radius-sm: 10px;
            --radius: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(22, 35, 58, 0.06);
            --shadow: 0 6px 24px rgba(22, 35, 58, 0.08);
            --shadow-lg: 0 16px 48px rgba(22, 35, 58, 0.14);
            --transition: all 0.25s ease;
            --font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            transition: var(--transition);
        }
        ul,
        ol {
            list-style: none;
        }
        button {
            cursor: pointer;
        }
        input:focus,
        button:focus,
        a:focus {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }
        .container-custom {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header ===== */
        .site-header {
            background: #fff;
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-top {
            border-bottom: 1px solid var(--border);
        }
        .header-top-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            height: 72px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 800;
            color: var(--text-strong);
            text-decoration: none;
            white-space: nowrap;
        }
        .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }
        .header-search {
            display: flex;
            flex: 0 1 420px;
        }
        .header-search input {
            flex: 1;
            height: 40px;
            border: 1px solid var(--border);
            border-radius: 20px 0 0 20px;
            padding: 0 20px;
            font-size: 14px;
            outline: none;
            background: var(--bg);
            transition: var(--transition);
        }
        .header-search input:focus {
            border-color: var(--primary);
            background: #fff;
        }
        .header-search button {
            height: 40px;
            padding: 0 20px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 0 20px 20px 0;
            font-size: 14px;
            transition: var(--transition);
        }
        .header-search button:hover {
            background: var(--primary-dark);
        }
        .btn-header {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #fff;
            text-decoration: none;
            padding: 10px 18px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
            box-shadow: 0 4px 12px rgba(255, 122, 0, 0.3);
            white-space: nowrap;
        }
        .btn-header:hover {
            background: #e66a00;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(255, 122, 0, 0.4);
        }
        .channel-bar {
            background: #fff;
            border-bottom: 1px solid var(--border);
        }
        .channel-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            max-width: 1240px;
            margin: 0 auto;
            padding: 8px 24px;
            overflow-x: auto;
            scrollbar-width: none;
        }
        .channel-nav::-webkit-scrollbar {
            display: none;
        }
        .channel-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 24px;
            color: var(--text);
            text-decoration: none;
            font-weight: 600;
            font-size: 15px;
            transition: var(--transition);
            white-space: nowrap;
        }
        .channel-link:hover {
            background: var(--bg);
            color: var(--primary);
        }
        .channel-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(30, 94, 255, 0.3);
        }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            background: linear-gradient(135deg, rgba(11, 18, 32, 0.92), rgba(30, 94, 255, 0.75)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            padding: 70px 0 64px;
            color: #fff;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 28px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb i {
            font-size: 11px;
        }
        .article-h1 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.35;
            max-width: 900px;
            color: #fff;
            margin-bottom: 20px;
            letter-spacing: -0.01em;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 22px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
            flex-wrap: wrap;
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-hero-empty {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            padding: 30px 0 10px;
        }

        /* ===== Article Body ===== */
        .article-body {
            padding: 48px 0 20px;
            background: var(--bg);
        }
        .article-content-card {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 48px 56px;
            margin-top: -30px;
            position: relative;
        }
        .article-content {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text);
        }
        .article-content h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-strong);
            margin: 36px 0 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border);
        }
        .article-content h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-strong);
            margin: 28px 0 12px;
        }
        .article-content p {
            margin-bottom: 18px;
        }
        .article-content img {
            border-radius: 14px;
            margin: 28px 0;
        }
        .article-content ul {
            list-style: disc;
            padding-left: 26px;
            margin-bottom: 18px;
        }
        .article-content ol {
            list-style: decimal;
            padding-left: 26px;
            margin-bottom: 18px;
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--bg);
            padding: 18px 22px;
            border-radius: 0 12px 12px 0;
            margin: 28px 0;
            font-style: italic;
            color: var(--text);
        }
        .article-content a {
            color: var(--primary);
            text-decoration: underline;
        }
        .article-content a:hover {
            color: var(--primary-dark);
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            border-radius: 10px;
            overflow: hidden;
        }
        .article-content table th,
        .article-content table td {
            border: 1px solid var(--border);
            padding: 12px 16px;
            text-align: left;
        }
        .article-content table th {
            background: var(--bg);
            font-weight: 600;
            color: var(--text-strong);
        }

        /* ===== Article Empty ===== */
        .article-empty {
            text-align: center;
            padding: 50px 20px 40px;
        }
        .empty-icon {
            width: 72px;
            height: 72px;
            background: var(--bg);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 28px;
            margin: 0 auto 22px;
        }
        .article-empty h1 {
            font-size: 30px;
            color: var(--text-strong);
            margin-bottom: 10px;
        }
        .article-empty p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        /* ===== Stats ===== */
        .stats-section {
            background: var(--bg-alt);
            padding: 70px 0;
        }
        .stat-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius);
            padding: 32px 20px;
            text-align: center;
            transition: var(--transition);
        }
        .stat-card:hover {
            background: rgba(255, 255, 255, 0.09);
            transform: translateY(-4px);
        }
        .stat-number {
            font-size: 40px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 8px;
        }
        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== Cards ===== */
        .recommend-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .recommend-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
        }
        .recommend-card img {
            height: 190px;
            width: 100%;
            object-fit: cover;
        }
        .badge {
            display: inline-block;
            background: rgba(30, 94, 255, 0.1);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        /* ===== Features ===== */
        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-size: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            box-shadow: 0 8px 20px rgba(30, 94, 255, 0.25);
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            padding: 20px 24px;
            font-weight: 600;
            color: var(--text-strong);
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 12px;
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary i {
            color: var(--primary);
            transition: var(--transition);
        }
        .faq-item summary .faq-arrow {
            margin-left: auto;
            color: var(--text-muted);
            font-size: 14px;
            transition: var(--transition);
        }
        .faq-item[open] summary .faq-arrow {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item .faq-body {
            padding: 0 24px 20px 50px;
            color: var(--text-muted);
            line-height: 1.75;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            background: linear-gradient(135deg, rgba(11, 18, 32, 0.88), rgba(30, 94, 255, 0.82)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            padding: 80px 0;
            color: #fff;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            padding: 14px 32px;
            border-radius: 50px;
            transition: var(--transition);
            box-shadow: 0 6px 20px rgba(255, 255, 255, 0.15);
        }
        .btn-primary:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(255, 122, 0, 0.3);
        }
        .btn-outline-white {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            padding: 13px 30px;
            border: 2px solid rgba(255, 255, 255, 0.6);
            border-radius: 50px;
            transition: var(--transition);
        }
        .btn-outline-white:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-alt);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 360px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-links a i {
            font-size: 11px;
            color: var(--primary-light);
        }
        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-content-card {
                padding: 36px 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .header-search {
                flex: 0 1 320px;
            }
        }
        @media (max-width: 768px) {
            .header-top-inner {
                height: 64px;
                gap: 12px;
            }
            .brand {
                font-size: 20px;
            }
            .brand-icon {
                width: 36px;
                height: 36px;
                font-size: 15px;
            }
            .header-search {
                display: none;
            }
            .btn-header {
                padding: 8px 14px;
                font-size: 13px;
            }
            .channel-nav {
                padding: 6px 16px;
            }
            .channel-link {
                padding: 8px 16px;
                font-size: 14px;
            }
            .article-hero {
                padding: 48px 0 40px;
            }
            .article-h1 {
                font-size: 28px;
            }
            .article-content-card {
                padding: 28px 22px;
                margin-top: -18px;
            }
            .article-content {
                font-size: 15px;
            }
            .article-content h2 {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .stat-number {
                font-size: 30px;
            }
        }
        @media (max-width: 520px) {
            .container-custom {
                padding: 0 16px;
            }
            .brand {
                font-size: 17px;
                gap: 6px;
            }
            .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 13px;
                border-radius: 8px;
            }
            .btn-header {
                padding: 7px 10px;
                font-size: 12px;
                gap: 5px;
            }
            .channel-link {
                padding: 7px 12px;
                font-size: 13px;
                gap: 5px;
            }
            .article-h1 {
                font-size: 24px;
            }
            .article-meta {
                gap: 12px;
                font-size: 13px;
            }
            .article-content-card {
                padding: 20px 16px;
                border-radius: 14px;
            }
            .stat-card {
                padding: 22px 12px;
            }
            .stat-number {
                font-size: 26px;
            }
            .footer-bottom {
                font-size: 12px;
            }
        }