/* roulang page: index */
/* ===== 设计变量 ===== */
    :root {
        --primary: #4F46E5;
        --primary-dark: #4338CA;
        --primary-light: #EEF2FF;
        --secondary: #06B6D4;
        --secondary-light: #CFFAFE;
        --dark: #0B1220;
        --dark-2: #111C3A;
        --bg: #F6F8FB;
        --surface: #FFFFFF;
        --text: #1E293B;
        --text-muted: #64748B;
        --border: #E2E8F0;
        --radius: 16px;
        --radius-sm: 10px;
        --shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
        --shadow-lg: 0 12px 48px rgba(15, 23, 42, 0.10);
        --transition: all 0.3s ease;
        --spacing: 80px;
        --font-main: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    }

    /* ===== 基础重置 ===== */
    *,
    *::before,
    *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: var(--font-main);
        background-color: var(--bg);
        color: var(--text);
        line-height: 1.7;
        -webkit-font-smoothing: antialiased;
    }
    a {
        color: var(--primary);
        text-decoration: none;
        transition: var(--transition);
    }
    a:hover {
        color: var(--primary-dark);
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    button,
    input {
        font-family: inherit;
        outline: none;
    }
    ul,
    ol {
        list-style: none;
    }
    .container {
        max-width: 1200px;
        padding-left: 20px;
        padding-right: 20px;
    }

    /* ===== 通用板块 ===== */
    .section {
        padding: var(--spacing) 0;
    }
    .section-head {
        margin-bottom: 44px;
    }
    .section-tag {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: var(--primary-light);
        color: var(--primary);
        font-size: 14px;
        font-weight: 600;
        padding: 6px 16px;
        border-radius: 100px;
        margin-bottom: 14px;
        letter-spacing: 0.5px;
    }
    .section-tag i {
        font-size: 12px;
    }
    .section-title {
        font-size: clamp(26px, 4vw, 36px);
        font-weight: 700;
        color: var(--dark);
        line-height: 1.3;
        margin-bottom: 12px;
        letter-spacing: -0.5px;
    }
    .section-desc {
        color: var(--text-muted);
        font-size: 16px;
        max-width: 640px;
        line-height: 1.8;
    }

    /* ===== 按钮 ===== */
    .btn-primary-custom {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: var(--primary);
        color: #fff;
        font-size: 15px;
        font-weight: 600;
        padding: 12px 28px;
        border-radius: 12px;
        border: none;
        transition: var(--transition);
        box-shadow: 0 4px 16px rgba(79, 70, 229, 0.3);
    }
    .btn-primary-custom:hover {
        background: var(--primary-dark);
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(79, 70, 229, 0.4);
    }
    .btn-ghost-custom {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: transparent;
        color: #fff;
        font-size: 15px;
        font-weight: 500;
        padding: 12px 28px;
        border-radius: 12px;
        border: 1px solid rgba(255, 255, 255, 0.4);
        transition: var(--transition);
    }
    .btn-ghost-custom:hover {
        background: rgba(255, 255, 255, 0.12);
        color: #fff;
        border-color: rgba(255, 255, 255, 0.7);
        transform: translateY(-2px);
    }

    /* ===== Header / 导航 ===== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 1000;
        background: rgba(255, 255, 255, 0.86);
        backdrop-filter: blur(18px);
        -webkit-backdrop-filter: blur(18px);
        border-bottom: 1px solid var(--border);
    }
    .navbar {
        padding: 12px 0;
    }
    .navbar-brand {
        font-size: 20px;
        font-weight: 700;
        color: var(--dark);
        display: flex;
        align-items: center;
        gap: 10px;
        letter-spacing: -0.3px;
    }
    .navbar-brand:hover {
        color: var(--dark);
    }
    .brand-icon {
        width: 38px;
        height: 38px;
        flex-shrink: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        background: linear-gradient(135deg, var(--primary), var(--secondary));
        color: #fff;
        border-radius: 12px;
        font-size: 15px;
        box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
    }
    .navbar .nav-link {
        font-weight: 500;
        color: var(--text);
        padding: 8px 16px !important;
        border-radius: 10px;
        margin: 0 2px;
        font-size: 15px;
        transition: var(--transition);
        position: relative;
    }
    .navbar .nav-link:hover {
        color: var(--primary);
        background: var(--primary-light);
    }
    .navbar .nav-link.active {
        color: var(--primary);
        background: var(--primary-light);
        font-weight: 600;
    }
    .nav-right {
        display: flex;
        align-items: center;
        gap: 12px;
    }
    .search-box {
        display: flex;
        align-items: center;
        background: var(--bg);
        border: 1px solid var(--border);
        border-radius: 100px;
        padding: 6px 14px;
        gap: 8px;
        transition: var(--transition);
    }
    .search-box i {
        color: var(--text-muted);
        font-size: 14px;
    }
    .search-box input {
        border: none;
        background: transparent;
        font-size: 14px;
        color: var(--text);
        width: 140px;
    }
    .search-box input::placeholder {
        color: var(--text-muted);
    }
    .search-box:focus-within {
        border-color: var(--primary);
        box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
        background: #fff;
    }
    .btn-nav {
        background: var(--primary);
        color: #fff;
        font-size: 14px;
        font-weight: 600;
        padding: 8px 20px;
        border-radius: 10px;
        border: none;
        transition: var(--transition);
        white-space: nowrap;
    }
    .btn-nav:hover {
        background: var(--primary-dark);
        color: #fff;
        transform: translateY(-1px);
        box-shadow: 0 4px 16px rgba(79, 70, 229, 0.35);
    }
    .navbar-toggler {
        border: none;
        font-size: 22px;
        color: var(--text);
        padding: 4px 8px;
    }
    .navbar-toggler:focus {
        box-shadow: none;
    }

    /* ===== Hero ===== */
    .hero {
        position: relative;
        padding: 100px 0 110px;
        background: var(--dark);
        color: #fff;
        overflow: hidden;
    }
    .hero-bg {
        position: absolute;
        inset: 0;
        background-image: url('/assets/images/backpic/back-1.png');
        background-size: cover;
        background-position: center;
        opacity: 0.30;
    }
    .hero::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(120deg, rgba(11, 18, 32, 0.95) 0%, rgba(17, 28, 58, 0.75) 60%, rgba(79, 70, 229, 0.25) 100%);
        pointer-events: none;
    }
    .hero-content {
        position: relative;
        z-index: 2;
    }
    .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: rgba(255, 255, 255, 0.10);
        border: 1px solid rgba(255, 255, 255, 0.20);
        color: #E0E7FF;
        font-size: 13px;
        font-weight: 500;
        padding: 7px 16px;
        border-radius: 100px;
        margin-bottom: 24px;
        backdrop-filter: blur(8px);
    }
    .hero-badge i {
        color: #A5B4FC;
    }
    .hero h1 {
        font-size: clamp(32px, 5vw, 52px);
        font-weight: 800;
        line-height: 1.2;
        margin-bottom: 20px;
        letter-spacing: -1px;
    }
    .hero h1 .gradient-text {
        background: linear-gradient(90deg, #C7D2FE, #67E8F9);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    .hero .lead {
        font-size: 17px;
        color: rgba(255, 255, 255, 0.85);
        max-width: 520px;
        line-height: 1.8;
        margin-bottom: 32px;
    }
    .hero-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 14px;
        margin-bottom: 36px;
    }
    .hero-trust {
        display: flex;
        flex-wrap: wrap;
        gap: 24px;
        color: rgba(255, 255, 255, 0.7);
        font-size: 14px;
    }
    .hero-trust span {
        display: flex;
        align-items: center;
        gap: 6px;
    }
    .hero-trust i {
        color: #34D399;
        font-size: 13px;
    }

    .hero-visual {
        position: relative;
        border-radius: 24px;
        overflow: visible;
        margin-left: 20px;
    }
    .hero-visual img {
        border-radius: 24px;
        box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
        border: 1px solid rgba(255, 255, 255, 0.12);
    }
    .float-card {
        position: absolute;
        display: flex;
        align-items: center;
        gap: 10px;
        background: rgba(255, 255, 255, 0.96);
        border-radius: 14px;
        padding: 12px 16px;
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
        backdrop-filter: blur(8px);
    }
    .float-card i {
        font-size: 18px;
        color: var(--primary);
    }
    .float-card strong {
        display: block;
        font-size: 14px;
        color: var(--dark);
        line-height: 1.2;
    }
    .float-card span {
        display: block;
        font-size: 12px;
        color: var(--text-muted);
        line-height: 1.3;
    }
    .float-card.fc-1 {
        top: 24px;
        right: -16px;
    }
    .float-card.fc-2 {
        bottom: 32px;
        left: -20px;
    }

    /* ===== About ===== */
    .about-section {
        background: var(--surface);
    }
    .about-image {
        position: relative;
        border-radius: 24px;
        overflow: hidden;
        box-shadow: var(--shadow-lg);
    }
    .about-image img {
        border-radius: 24px;
    }
    .about-image::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, transparent 70%, rgba(11, 18, 32, 0.3));
        border-radius: 24px;
    }
    .about-content {
        padding-left: 20px;
    }
    .about-content .section-title {
        margin-bottom: 18px;
    }
    .about-content p {
        color: var(--text-muted);
        font-size: 16px;
        line-height: 1.9;
        margin-bottom: 24px;
    }
    .about-list {
        margin-top: 20px;
    }
    .about-list li {
        display: flex;
        align-items: flex-start;
        gap: 12px;
        padding: 12px 0;
        border-bottom: 1px solid var(--border);
        font-size: 15px;
        color: var(--text);
    }
    .about-list li:last-child {
        border-bottom: none;
    }
    .about-list .list-icon {
        width: 32px;
        height: 32px;
        flex-shrink: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        background: var(--primary-light);
        color: var(--primary);
        border-radius: 8px;
        font-size: 14px;
    }

    /* ===== Categories ===== */
    .categories-section {
        background: var(--bg);
    }
    .category-card {
        position: relative;
        border-radius: 20px;
        overflow: hidden;
        box-shadow: var(--shadow);
        transition: var(--transition);
        height: 100%;
        min-height: 340px;
        display: block;
    }
    .category-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-lg);
    }
    .category-card img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        position: absolute;
        inset: 0;
        transition: transform 0.6s ease;
    }
    .category-card:hover img {
        transform: scale(1.04);
    }
    .category-card::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, rgba(11, 18, 32, 0.1) 0%, rgba(11, 18, 32, 0.75) 100%);
        z-index: 1;
    }
    .category-info {
        position: relative;
        z-index: 2;
        padding: 32px;
        display: flex;
        flex-direction: column;
        justify-content: flex-end;
        height: 100%;
        min-height: 340px;
        color: #fff;
    }
    .category-info .cat-icon {
        width: 44px;
        height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: rgba(255, 255, 255, 0.18);
        border-radius: 12px;
        font-size: 18px;
        margin-bottom: 16px;
        backdrop-filter: blur(6px);
        border: 1px solid rgba(255, 255, 255, 0.2);
    }
    .category-info h3 {
        font-size: 24px;
        font-weight: 700;
        margin-bottom: 8px;
    }
    .category-info p {
        font-size: 14px;
        color: rgba(255, 255, 255, 0.85);
        line-height: 1.7;
        margin-bottom: 16px;
        max-width: 280px;
    }
    .category-info .cat-link {
        font-size: 14px;
        font-weight: 600;
        color: #E0E7FF;
        display: inline-flex;
        align-items: center;
        gap: 6px;
        transition: var(--transition);
    }
    .category-info .cat-link:hover {
        color: #fff;
        gap: 10px;
    }

    /* ===== Posts List ===== */
    .posts-section {
        background: var(--surface);
    }
    .posts-list {
        display: flex;
        flex-direction: column;
        gap: 16px;
    }
    .post-item {
        display: flex;
        flex-direction: column;
        gap: 8px;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: 16px;
        padding: 24px 28px;
        transition: var(--transition);
    }
    .post-item:hover {
        border-color: var(--primary);
        box-shadow: var(--shadow);
        transform: translateX(4px);
    }
    .post-meta {
        display: flex;
        align-items: center;
        gap: 14px;
        flex-wrap: wrap;
    }
    .badge-cat {
        display: inline-flex;
        align-items: center;
        gap: 5px;
        background: var(--primary-light);
        color: var(--primary);
        font-size: 12px;
        font-weight: 600;
        padding: 4px 12px;
        border-radius: 100px;
    }
    .badge-cat.news {
        background: var(--secondary-light);
        color: #0E7490;
    }
    .post-date {
        font-size: 13px;
        color: var(--text-muted);
        display: flex;
        align-items: center;
        gap: 5px;
    }
    .post-item h3 {
        font-size: 19px;
        font-weight: 600;
        color: var(--text);
        line-height: 1.5;
        transition: var(--transition);
    }
    .post-item:hover h3 {
        color: var(--primary);
    }
    .post-item p {
        font-size: 14px;
        color: var(--text-muted);
        line-height: 1.7;
        margin-bottom: 4px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .post-link {
        font-size: 14px;
        font-weight: 600;
        color: var(--primary);
        display: flex;
        align-items: center;
        gap: 6px;
        transition: var(--transition);
    }
    .post-item:hover .post-link {
        gap: 10px;
    }
    .empty-tip {
        text-align: center;
        padding: 60px 20px;
        background: var(--bg);
        border-radius: 20px;
        border: 1px dashed var(--border);
    }
    .empty-tip i {
        font-size: 40px;
        color: var(--text-muted);
        margin-bottom: 12px;
    }
    .empty-tip p {
        color: var(--text-muted);
        font-size: 16px;
    }

    /* ===== Stats ===== */
    .stats-section {
        background: var(--dark);
        color: #fff;
        padding: 60px 0;
        position: relative;
        overflow: hidden;
    }
    .stats-section::before {
        content: '';
        position: absolute;
        top: -50%;
        right: -20%;
        width: 400px;
        height: 400px;
        background: radial-gradient(circle, rgba(79, 70, 229, 0.3), transparent 70%);
        border-radius: 50%;
        pointer-events: none;
    }
    .stats-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 30px;
        position: relative;
        z-index: 2;
    }
    .stat-item {
        text-align: center;
        padding: 20px;
    }
    .stat-number {
        font-size: clamp(32px, 5vw, 48px);
        font-weight: 800;
        background: linear-gradient(90deg, #C7D2FE, #67E8F9);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        line-height: 1.2;
        margin-bottom: 6px;
    }
    .stat-label {
        font-size: 15px;
        color: rgba(255, 255, 255, 0.7);
        font-weight: 400;
    }

    /* ===== Features ===== */
    .features-section {
        background: var(--bg);
    }
    .features-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 28px;
    }
    .feature-card {
        background: var(--surface);
        border-radius: 20px;
        padding: 32px;
        border: 1px solid var(--border);
        transition: var(--transition);
        box-shadow: var(--shadow);
    }
    .feature-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-lg);
        border-color: var(--primary);
    }
    .feature-icon {
        width: 48px;
        height: 48px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: var(--primary-light);
        color: var(--primary);
        border-radius: 14px;
        font-size: 20px;
        margin-bottom: 20px;
    }
    .feature-img {
        border-radius: 14px;
        overflow: hidden;
        margin-bottom: 20px;
    }
    .feature-img img {
        width: 100%;
        height: 140px;
        object-fit: cover;
        transition: transform 0.5s ease;
    }
    .feature-card:hover .feature-img img {
        transform: scale(1.05);
    }
    .feature-card h3 {
        font-size: 18px;
        font-weight: 700;
        color: var(--dark);
        margin-bottom: 10px;
    }
    .feature-card p {
        font-size: 14px;
        color: var(--text-muted);
        line-height: 1.7;
    }

    /* ===== FAQ ===== */
    .faq-section {
        background: var(--surface);
    }
    .faq-wrap {
        max-width: 820px;
        margin: 0 auto;
    }
    .accordion-item {
        border: 1px solid var(--border) !important;
        border-radius: 14px !important;
        margin-bottom: 14px;
        overflow: hidden;
        box-shadow: none;
    }
    .accordion-button {
        background: var(--surface);
        color: var(--text);
        font-weight: 600;
        font-size: 16px;
        padding: 20px 24px;
        box-shadow: none;
        transition: var(--transition);
    }
    .accordion-button:not(.collapsed) {
        background: var(--primary-light);
        color: var(--primary);
        box-shadow: none;
    }
    .accordion-button:focus {
        box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.10);
        z-index: 1;
    }
    .accordion-button::after {
        background-image: var(--bs-accordion-btn-icon);
    }
    .accordion-body {
        padding: 18px 24px 22px;
        color: var(--text-muted);
        font-size: 15px;
        line-height: 1.8;
        border-top: 1px solid var(--border);
        background: #FAFAFF;
    }

    /* ===== CTA ===== */
    .cta-section {
        padding: 0 0 var(--spacing);
        background: var(--bg);
    }
    .cta-box {
        position: relative;
        border-radius: 24px;
        overflow: hidden;
        padding: 72px 48px;
        background: var(--dark);
        color: #fff;
        text-align: center;
    }
    .cta-box::before {
        content: '';
        position: absolute;
        inset: 0;
        background-image: url('/assets/images/backpic/back-2.png');
        background-size: cover;
        background-position: center;
        opacity: 0.25;
    }
    .cta-box::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(11, 18, 32, 0.9), rgba(79, 70, 229, 0.4));
    }
    .cta-box>* {
        position: relative;
        z-index: 2;
    }
    .cta-title {
        font-size: clamp(24px, 4vw, 36px);
        font-weight: 700;
        margin-bottom: 14px;
    }
    .cta-desc {
        font-size: 16px;
        color: rgba(255, 255, 255, 0.8);
        max-width: 520px;
        margin: 0 auto 30px;
        line-height: 1.8;
    }

    /* ===== Footer ===== */
    .site-footer {
        background: var(--dark);
        color: rgba(255, 255, 255, 0.7);
        padding: 56px 0 28px;
    }
    .footer-top {
        display: flex;
        justify-content: space-between;
        align-items: flex-start;
        gap: 40px;
        padding-bottom: 40px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        flex-wrap: wrap;
    }
    .footer-brand .brand-name {
        font-size: 20px;
        font-weight: 700;
        color: #fff;
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 10px;
    }
    .footer-brand .brand-name .brand-icon {
        background: linear-gradient(135deg, var(--primary), var(--secondary));
    }
    .footer-brand p {
        font-size: 14px;
        color: rgba(255, 255, 255, 0.6);
        max-width: 320px;
        line-height: 1.7;
    }
    .footer-links {
        display: flex;
        gap: 40px;
    }
    .footer-links h4 {
        font-size: 14px;
        font-weight: 600;
        color: #fff;
        margin-bottom: 14px;
        letter-spacing: 0.5px;
    }
    .footer-links ul li {
        margin-bottom: 8px;
    }
    .footer-links ul li a {
        font-size: 14px;
        color: rgba(255, 255, 255, 0.6);
        transition: var(--transition);
    }
    .footer-links ul li a:hover {
        color: #fff;
        padding-left: 4px;
    }
    .footer-bottom {
        text-align: center;
        padding-top: 24px;
        font-size: 13px;
        color: rgba(255, 255, 255, 0.4);
    }

    /* ===== 响应式 ===== */
    @media (max-width: 991px) {
        :root {
            --spacing: 60px;
        }
        .navbar-collapse {
            background: var(--surface);
            padding: 18px;
            border-radius: 16px;
            margin-top: 12px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border);
        }
        .nav-right {
            flex-direction: column;
            align-items: stretch;
            margin-top: 12px;
            gap: 10px;
        }
        .search-box {
            width: 100%;
        }
        .search-box input {
            width: 100%;
        }
        .btn-nav {
            text-align: center;
        }
        .hero {
            padding: 80px 0 90px;
        }
        .hero-visual {
            margin-left: 0;
            margin-top: 40px;
            max-width: 480px;
        }
        .about-content {
            padding-left: 0;
            margin-top: 30px;
        }
        .features-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .stats-grid {
            grid-template-columns: repeat(2, 1fr);
        }
    }

    @media (max-width: 768px) {
        :root {
            --spacing: 48px;
        }
        .section-title {
            font-size: 26px;
        }
        .hero h1 {
            font-size: 32px;
        }
        .hero .lead {
            font-size: 15px;
        }
        .hero-actions {
            flex-direction: column;
            align-items: stretch;
        }
        .hero-actions .btn-primary-custom,
        .hero-actions .btn-ghost-custom {
            justify-content: center;
        }
        .features-grid {
            grid-template-columns: 1fr;
        }
        .stats-grid {
            gap: 20px;
        }
        .category-info {
            min-height: 280px;
            padding: 24px;
        }
        .category-card,
        .category-info {
            min-height: 280px;
        }
        .cta-box {
            padding: 48px 24px;
        }
        .footer-top {
            flex-direction: column;
            gap: 28px;
        }
        .footer-links {
            flex-wrap: wrap;
            gap: 24px;
        }
        .float-card.fc-1 {
            right: 8px;
            top: 12px;
        }
        .float-card.fc-2 {
            left: 8px;
            bottom: 16px;
        }
    }

    @media (max-width: 520px) {
        .container {
            padding-left: 16px;
            padding-right: 16px;
        }
        .navbar-brand {
            font-size: 17px;
        }
        .brand-icon {
            width: 32px;
            height: 32px;
            font-size: 13px;
        }
        .hero {
            padding: 60px 0 70px;
        }
        .hero-trust {
            gap: 14px;
            font-size: 12px;
            flex-direction: column;
            align-items: flex-start;
        }
        .post-item {
            padding: 18px 16px;
        }
        .post-item h3 {
            font-size: 16px;
        }
        .section-head {
            margin-bottom: 28px;
        }
        .stats-grid {
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }
        .stat-number {
            font-size: 32px;
        }
    }

    @media (prefers-reduced-motion: reduce) {
        *,
        *::before,
        *::after {
            animation-duration: 0.01ms !important;
            transition-duration: 0.01ms !important;
        }
    }

/* roulang page: category1 */
:root {
            --primary: #1e40af;
            --primary-light: #3b82f6;
            --accent: #06b6d4;
            --accent-light: #22d3ee;
            --dark-bg: #0b1224;
            --body-bg: #f1f5f9;
            --card-bg: #ffffff;
            --text: #0f172a;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 10px rgba(2, 12, 27, .04);
            --shadow-md: 0 8px 24px rgba(2, 12, 27, .07);
            --shadow-lg: 0 16px 40px rgba(2, 12, 27, .09);
            --transition: all .25s ease;
            --font-family: "Inter", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
        }

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

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

        body {
            font-family: var(--font-family);
            background: var(--body-bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }

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

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

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            max-width: 1240px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 100px 0;
            position: relative;
        }

        .section-alt {
            background: #ffffff;
        }

        .section-darker {
            background: var(--dark-bg);
            color: #ffffff;
        }

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 60px;
        }

        .section-head .surtitle {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--accent);
            background: rgba(6, 182, 212, .1);
            padding: 6px 16px;
            border-radius: 100px;
            margin-bottom: 16px;
        }

        .section-head h2 {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -1px;
        }

        .section-head p {
            color: var(--text-muted);
            font-size: 17px;
        }

        /* ===== 按钮 ===== */
        .btn-main {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--primary);
            color: #ffffff;
            border: none;
            padding: 14px 32px;
            font-size: 15px;
            font-weight: 700;
            border-radius: 12px;
            box-shadow: 0 8px 24px rgba(30, 64, 175, .28);
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-main:hover {
            background: var(--primary-light);
            color: #ffffff;
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(30, 64, 175, .36);
        }

        .btn-main:active {
            transform: translateY(0);
        }

        .btn-main:focus-visible,
        .btn-ghost:focus-visible {
            outline: 3px solid rgba(6, 182, 212, .5);
            outline-offset: 2px;
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: var(--text);
            border: 1.5px solid var(--border);
            padding: 13px 30px;
            font-size: 15px;
            font-weight: 600;
            border-radius: 12px;
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-ghost:hover {
            border-color: var(--primary-light);
            color: var(--primary);
            background: rgba(59, 130, 246, .05);
            transform: translateY(-2px);
        }

        .btn-light-solid {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: #ffffff;
            color: var(--primary);
            border: none;
            padding: 14px 32px;
            font-size: 15px;
            font-weight: 700;
            border-radius: 12px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, .18);
            transition: var(--transition);
        }

        .btn-light-solid:hover {
            background: var(--accent-light);
            color: var(--dark-bg);
            transform: translateY(-2px);
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(255, 255, 255, .86);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(226, 232, 240, .8);
            box-shadow: 0 2px 20px rgba(2, 12, 27, .04);
        }

        .site-header .navbar {
            padding: 14px 0;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.5px;
        }

        .navbar-brand:hover {
            color: var(--text);
        }

        .brand-icon {
            width: 40px;
            height: 40px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 12px;
            color: #ffffff;
            font-size: 18px;
            box-shadow: 0 6px 16px rgba(30, 64, 175, .28);
        }

        .navbar-nav {
            gap: 4px;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-muted);
            padding: 10px 18px !important;
            border-radius: 10px;
            transition: var(--transition);
            position: relative;
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(59, 130, 246, .06);
        }

        .nav-link.active {
            color: var(--primary);
            background: rgba(59, 130, 246, .1);
        }

        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 4px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            background: #f8fafc;
            border: 1.5px solid var(--border);
            border-radius: 100px;
            padding: 8px 18px;
            min-width: 220px;
            transition: var(--transition);
        }

        .search-box:focus-within {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 4px rgba(59, 130, 246, .1);
            background: #ffffff;
        }

        .search-box i {
            color: var(--text-muted);
            font-size: 14px;
        }

        .search-box input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 14px;
            color: var(--text);
            width: 100%;
        }

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

        .btn-nav {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #ffffff;
            font-size: 14px;
            font-weight: 700;
            padding: 10px 22px;
            border-radius: 100px;
            box-shadow: 0 6px 18px rgba(30, 64, 175, .24);
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-nav:hover {
            background: var(--primary-light);
            color: #ffffff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(30, 64, 175, .32);
        }

        .navbar-toggler {
            border: none;
            color: var(--text);
            font-size: 22px;
            padding: 6px 10px;
            border-radius: 10px;
            background: #f1f5f9;
        }

        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid rgba(59, 130, 246, .4);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            background-image: linear-gradient(135deg, rgba(11, 18, 36, .9), rgba(30, 64, 175, .8)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            padding: 130px 0 110px;
            color: #ffffff;
            text-align: center;
        }

        .hero::after {
            content: "";
            position: absolute;
            inset: auto 0 0 0;
            height: 80px;
            background: linear-gradient(to top, var(--body-bg), transparent);
            pointer-events: none;
        }

        .hero-breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .18);
            padding: 8px 20px;
            border-radius: 100px;
            font-size: 14px;
            margin-bottom: 28px;
            backdrop-filter: blur(8px);
        }

        .hero-breadcrumb a {
            color: rgba(255, 255, 255, .75);
            font-weight: 500;
        }

        .hero-breadcrumb a:hover {
            color: #ffffff;
        }

        .hero-breadcrumb .sep {
            color: rgba(255, 255, 255, .4);
        }

        .hero-breadcrumb .current {
            color: #ffffff;
            font-weight: 600;
        }

        .hero h1 {
            font-size: 54px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -1.5px;
            margin-bottom: 22px;
        }

        .hero h1 span {
            background: linear-gradient(90deg, var(--accent-light), #ffffff);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-lead {
            font-size: 18px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .85);
            max-width: 660px;
            margin: 0 auto 40px;
        }

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

        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 50px;
            margin-top: 56px;
            padding-top: 44px;
            border-top: 1px solid rgba(255, 255, 255, .15);
        }

        .hero-stats .stat-item {
            text-align: center;
        }

        .hero-stats .stat-num {
            font-size: 36px;
            font-weight: 800;
            letter-spacing: -1px;
            background: linear-gradient(90deg, var(--accent-light), #ffffff);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-stats .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, .7);
            margin-top: 4px;
        }

        /* ===== 分类卡片 ===== */
        .category-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(59, 130, 246, .3);
        }

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

        .category-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

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

        .category-card .card-img-wrap::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 18, 36, .35), transparent);
        }

        .category-card .card-body-custom {
            padding: 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .category-card .card-tag {
            display: inline-flex;
            align-items: center;
            align-self: flex-start;
            gap: 6px;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 1px;
            color: var(--accent);
            background: rgba(6, 182, 212, .1);
            padding: 5px 14px;
            border-radius: 100px;
            margin-bottom: 14px;
        }

        .category-card h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .category-card p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.75;
            margin-bottom: 20px;
            flex: 1;
        }

        .card-link {
            color: var(--primary);
            font-weight: 700;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

        .card-link:hover {
            gap: 10px;
            color: var(--accent);
        }

        /* ===== 内容卡片 ===== */
        .content-card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 28px;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .content-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(6, 182, 212, .35);
        }

        .content-card .meta-row {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .badge-tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(59, 130, 246, .08);
            border-radius: 100px;
            padding: 5px 14px;
        }

        .badge-tag.accent {
            color: var(--accent);
            background: rgba(6, 182, 212, .1);
        }

        .badge-tag.warning {
            color: #d97706;
            background: rgba(217, 119, 6, .1);
        }

        .badge-tag.success {
            color: #059669;
            background: rgba(5, 150, 105, .1);
        }

        .content-card h3 {
            font-size: 19px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 12px;
        }

        .content-card h3 a {
            color: var(--text);
        }

        .content-card h3 a:hover {
            color: var(--primary);
        }

        .content-card p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.75;
            flex: 1;
            margin-bottom: 20px;
        }

        .content-card .card-footer-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 16px;
            border-top: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-muted);
        }

        .content-card .card-footer-meta .author {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .content-card .card-footer-meta .author i {
            color: var(--accent);
        }

        .content-card .card-footer-meta .views i {
            margin-right: 4px;
        }

        /* ===== 图片图文区块 ===== */
        .feature-row {
            display: flex;
            align-items: center;
            gap: 60px;
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            padding: 48px;
            margin-bottom: 32px;
        }

        .feature-row .feature-img {
            flex: 0 0 300px;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

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

        .feature-row .feature-content {
            flex: 1;
        }

        .feature-row .feature-content .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 700;
            color: var(--accent);
            background: rgba(6, 182, 212, .1);
            padding: 5px 14px;
            border-radius: 100px;
            margin-bottom: 12px;
        }

        .feature-row .feature-content h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .feature-row .feature-content p {
            color: var(--text-muted);
            font-size: 15px;
            margin-bottom: 16px;
        }

        .feature-row .feature-content .feature-list {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
        }

        .feature-row .feature-content .feature-list li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text);
            padding: 4px 0;
        }

        .feature-row .feature-content .feature-list li i {
            color: var(--accent);
            font-size: 12px;
        }

        /* ===== 流程 ===== */
        .process-section {
            background: linear-gradient(135deg, var(--dark-bg), #0f2440);
        }

        .process-section .section-head h2 {
            color: #ffffff;
        }

        .process-section .section-head p {
            color: rgba(255, 255, 255, .7);
        }

        .process-section .section-head .surtitle {
            background: rgba(6, 182, 212, .15);
        }

        .process-step {
            text-align: center;
            padding: 36px 24px;
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: var(--radius-md);
            height: 100%;
            transition: var(--transition);
        }

        .process-step:hover {
            background: rgba(255, 255, 255, .1);
            transform: translateY(-4px);
        }

        .process-step .step-num {
            width: 56px;
            height: 56px;
            margin: 0 auto 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--accent), var(--primary-light));
            border-radius: 18px;
            font-size: 22px;
            font-weight: 800;
            color: #ffffff;
            box-shadow: 0 8px 24px rgba(6, 182, 212, .3);
        }

        .process-step h3 {
            font-size: 18px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
        }

        .process-step p {
            font-size: 14px;
            color: rgba(255, 255, 255, .7);
            line-height: 1.75;
        }

        /* ===== 数据条 ===== */
        .stats-band {
            background: #ffffff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 70px 0;
        }

        .stats-band .stat-box {
            text-align: center;
            padding: 20px;
        }

        .stats-band .stat-box .value {
            font-size: 44px;
            font-weight: 800;
            letter-spacing: -1px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
        }

        .stats-band .stat-box .label {
            font-size: 15px;
            color: var(--text-muted);
            margin-top: 8px;
            font-weight: 500;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--body-bg);
        }

        .accordion-item {
            background: var(--card-bg);
            border: 1px solid var(--border) !important;
            border-radius: var(--radius-md) !important;
            margin-bottom: 16px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        .accordion-button {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            padding: 20px 24px;
            background: transparent;
            box-shadow: none;
        }

        .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: rgba(59, 130, 246, .04);
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid rgba(59, 130, 246, .2);
        }

        .accordion-button::after {
            background-image: none;
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            content: "\f107";
            font-size: 18px;
            color: var(--primary);
            transition: var(--transition);
        }

        .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
        }

        .accordion-body {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
            padding: 4px 24px 24px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary), #1e3a8a);
            padding: 100px 0;
            text-align: center;
            color: #ffffff;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(6, 182, 212, .25), transparent 70%);
            top: -200px;
            right: -100px;
        }

        .cta-section::after {
            content: "";
            position: absolute;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 255, 255, .12), transparent 70%);
            bottom: -200px;
            left: -100px;
        }

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

        .cta-section h2 {
            font-size: 40px;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -1px;
        }

        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, .85);
            max-width: 560px;
            margin: 0 auto 36px;
        }

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

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark-bg);
            color: rgba(255, 255, 255, .75);
            padding: 70px 0 30px;
        }

        .footer-top {
            display: flex;
            justify-content: space-between;
            gap: 50px;
            padding-bottom: 50px;
            border-bottom: 1px solid rgba(255, 255, 255, .1);
            flex-wrap: wrap;
        }

        .footer-brand {
            max-width: 360px;
        }

        .footer-brand .brand-name {
            font-size: 22px;
            font-weight: 800;
            color: #ffffff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .6);
        }

        .footer-links {
            display: flex;
            gap: 70px;
            flex-wrap: wrap;
        }

        .footer-col h4 {
            color: #ffffff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
        }

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

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

        .footer-col ul a {
            color: rgba(255, 255, 255, .6);
            font-size: 14px;
            transition: var(--transition);
        }

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

        .footer-bottom {
            padding-top: 28px;
            text-align: center;
            font-size: 14px;
            color: rgba(255, 255, 255, .45);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .section {
                padding: 80px 0;
            }

            .hero {
                padding: 100px 0 90px;
            }

            .hero h1 {
                font-size: 44px;
            }

            .feature-row {
                flex-direction: column;
                padding: 36px;
                gap: 32px;
            }

            .feature-row .feature-img {
                flex: unset;
                width: 100%;
            }

            .feature-row .feature-img img {
                height: 240px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 64px 0;
            }

            .section-head h2 {
                font-size: 30px;
            }

            .section-head p {
                font-size: 15px;
            }

            .hero {
                padding: 80px 0 70px;
            }

            .hero h1 {
                font-size: 34px;
            }

            .hero-lead {
                font-size: 16px;
            }

            .hero-stats {
                gap: 28px;
                flex-wrap: wrap;
            }

            .hero-stats .stat-num {
                font-size: 28px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: center;
            }

            .hero-actions .btn-main,
            .hero-actions .btn-ghost {
                width: 100%;
                justify-content: center;
            }

            .search-box {
                min-width: 100%;
            }

            .nav-right {
                flex-direction: column;
                align-items: stretch;
                padding: 10px 0 16px;
            }

            .btn-nav {
                justify-content: center;
            }

            .footer-top {
                flex-direction: column;
                gap: 36px;
            }

            .footer-links {
                gap: 40px;
            }

            .stats-band .stat-box .value {
                font-size: 32px;
            }

            .cta-section h2 {
                font-size: 30px;
            }
        }

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

            .section-head h2 {
                font-size: 26px;
            }

            .hero h1 {
                font-size: 28px;
                letter-spacing: -0.5px;
            }

            .hero-breadcrumb {
                font-size: 13px;
                padding: 6px 14px;
            }

            .hero-stats {
                gap: 18px;
            }

            .hero-stats .stat-label {
                font-size: 12px;
            }

            .feature-row {
                padding: 24px;
            }

            .feature-row .feature-content h3 {
                font-size: 20px;
            }

            .process-step {
                padding: 24px 18px;
            }

            .content-card {
                padding: 22px;
            }

            .footer-links {
                flex-direction: column;
                gap: 28px;
            }

            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .cta-actions .btn-light-solid,
            .cta-actions .btn-main {
                justify-content: center;
            }
        }

/* roulang page: article */
:root {
            --color-primary: #4050E0;
            --color-primary-dark: #3140C8;
            --color-primary-light: #EEF0FE;
            --color-accent: #F59E0B;
            --color-dark: #0C1222;
            --color-dark-2: #151D33;
            --color-bg: #F6F8FC;
            --color-surface: #FFFFFF;
            --color-text: #16203A;
            --color-text-weak: #5B6B85;
            --color-border: #E4E9F2;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 28px;
            --shadow-sm: 0 2px 10px rgba(12, 18, 34, 0.05);
            --shadow-md: 0 10px 30px rgba(12, 18, 34, 0.08);
            --shadow-lg: 0 24px 56px rgba(12, 18, 34, 0.12);
            --font-body: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
            --transition: all 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            -webkit-font-smoothing: antialiased;
        }

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

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

        button,
        input {
            font-family: inherit;
        }

        :focus-visible {
            outline: 3px solid rgba(64, 80, 224, 0.35);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .site-header {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 1px 16px rgba(12, 18, 34, 0.04);
        }

        .site-header .navbar {
            padding-top: 14px;
            padding-bottom: 14px;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--color-dark) !important;
            letter-spacing: -0.01em;
        }

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: #fff;
            border-radius: 10px;
            font-size: 17px;
            box-shadow: 0 4px 12px rgba(64, 80, 224, 0.28);
        }

        .navbar .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-weak) !important;
            padding: 8px 18px !important;
            border-radius: 999px;
            position: relative;
        }

        .navbar .nav-link:hover {
            color: var(--color-primary) !important;
            background: var(--color-primary-light);
        }

        .navbar .nav-link.active {
            color: var(--color-primary) !important;
            background: var(--color-primary-light);
            font-weight: 600;
        }

        .navbar .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 3px;
            background: var(--color-primary);
            border-radius: 999px;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .search-box {
            display: flex;
            align-items: center;
            gap: 10px;
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: 999px;
            padding: 8px 18px;
            min-width: 210px;
            transition: var(--transition);
        }

        .search-box i {
            color: var(--color-text-weak);
            font-size: 13px;
        }

        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 0.9rem;
            color: var(--color-text);
            width: 100%;
        }

        .search-box input::placeholder {
            color: #94A3B8;
        }

        .search-box:focus-within {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 4px rgba(64, 80, 224, 0.1);
            background: #fff;
        }

        .btn-nav {
            background: var(--color-dark);
            color: #fff;
            border: none;
            padding: 9px 22px;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-nav:hover {
            background: var(--color-primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(64, 80, 224, 0.3);
        }

        .navbar-toggler {
            border: none;
            background: var(--color-bg);
            border-radius: 10px;
            width: 42px;
            height: 42px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--color-text);
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 4px rgba(64, 80, 224, 0.15);
        }

        .btn {
            border-radius: 12px;
            font-weight: 600;
            padding: 10px 26px;
            border: 1px solid transparent;
            transition: var(--transition);
        }

        .btn-primary {
            background: var(--color-primary);
            border-color: var(--color-primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(64, 80, 224, 0.24);
        }

        .btn-primary:hover {
            background: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(64, 80, 224, 0.32);
        }

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

        .btn-outline-primary:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(64, 80, 224, 0.25);
        }

        .btn-light {
            background: #fff;
            color: var(--color-primary-dark);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
        }

        .btn-light:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.18);
        }

        .btn-outline-light {
            border: 2px solid rgba(255, 255, 255, 0.7);
            color: #fff;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            transform: translateY(-2px);
        }

        /* Article Hero */
        .article-hero {
            position: relative;
            padding: 90px 0 70px;
            background-size: cover;
            background-position: center;
            color: #fff;
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(128deg, rgba(12, 18, 34, 0.94) 12%, rgba(64, 80, 224, 0.82) 58%, rgba(12, 18, 34, 0.72) 100%);
            z-index: 1;
        }

        .article-hero .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 28px;
            flex-wrap: wrap;
        }

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

        .breadcrumb-nav a:hover {
            color: #fff;
        }

        .breadcrumb-nav i {
            font-size: 10px;
            opacity: 0.7;
        }

        .breadcrumb-nav .current {
            color: rgba(255, 255, 255, 0.95);
            font-weight: 600;
        }

        .badge-category {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: rgba(255, 255, 255, 0.16);
            border: 1px solid rgba(255, 255, 255, 0.28);
            backdrop-filter: blur(8px);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        .badge-date {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.18);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 0.82rem;
            font-weight: 500;
        }

        .article-hero-content h1 {
            font-size: clamp(1.8rem, 3.4vw, 2.7rem);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin: 18px 0 14px;
            max-width: 820px;
            overflow-wrap: break-word;
        }

        .hero-description {
            font-size: 1.05rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.82);
            max-width: 680px;
            margin: 0;
        }

        .hero-wave {
            position: absolute;
            bottom: -1px;
            left: 0;
            width: 100%;
            z-index: 2;
            line-height: 0;
        }

        /* Article Section */
        .article-section {
            padding: 56px 0 80px;
        }

        .article-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        .article-cover img {
            width: 100%;
            height: auto;
            max-height: 420px;
            object-fit: cover;
        }

        .article-body {
            padding: 36px 42px 20px;
            font-size: 1.04rem;
            line-height: 1.9;
            color: var(--color-text);
        }

        .article-body p {
            margin-bottom: 1.4rem;
        }

        .article-body h2 {
            font-size: 1.55rem;
            font-weight: 750;
            margin: 2.1rem 0 1rem;
            letter-spacing: -0.01em;
        }

        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 650;
            margin: 1.7rem 0 0.85rem;
        }

        .article-body ul,
        .article-body ol {
            margin-bottom: 1.4rem;
            padding-left: 1.3rem;
        }

        .article-body li {
            margin-bottom: 0.5rem;
        }

        .article-body blockquote {
            border-left: 4px solid var(--color-primary);
            background: var(--color-primary-light);
            padding: 1rem 1.5rem;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.6rem 0;
            color: var(--color-text-weak);
            font-style: italic;
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 1.5rem 0;
            box-shadow: var(--shadow-md);
        }

        .article-body a {
            color: var(--color-primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-body a:hover {
            color: var(--color-primary-dark);
            text-decoration-thickness: 2px;
        }

        .article-tags {
            padding: 18px 42px 40px;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tags-title {
            font-weight: 600;
            color: var(--color-text-weak);
            font-size: 0.9rem;
            margin-right: 4px;
        }

        .tag-chip {
            display: inline-flex;
            align-items: center;
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            color: var(--color-text);
            font-size: 0.82rem;
            font-weight: 500;
            padding: 5px 14px;
            border-radius: 999px;
            transition: var(--transition);
        }

        .tag-chip:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: var(--color-primary-light);
        }

        /* Not Found */
        .article-notfound {
            padding: 80px 40px;
            text-align: center;
        }

        .notfound-icon {
            font-size: 3.2rem;
            color: var(--color-text-weak);
            margin-bottom: 20px;
            opacity: 0.5;
        }

        .article-notfound h2 {
            font-size: 1.7rem;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .article-notfound p {
            color: var(--color-text-weak);
            max-width: 440px;
            margin: 0 auto 28px;
        }

        .notfound-actions .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        /* Sidebar */
        .article-aside {
            position: sticky;
            top: 96px;
        }

        .sidebar-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 26px;
            margin-bottom: 22px;
        }

        .sidebar-title {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--color-dark);
        }

        .sidebar-title i {
            color: var(--color-primary);
            font-size: 0.95rem;
        }

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

        .sidebar-meta li {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px 0;
            border-bottom: 1px dashed var(--color-border);
            font-size: 0.9rem;
        }

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

        .sidebar-meta li span {
            color: var(--color-text-weak);
        }

        .sidebar-meta li strong {
            font-weight: 600;
            font-size: 0.92rem;
        }

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

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

        .sidebar-links a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 11px 14px;
            border-radius: 10px;
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text);
            transition: var(--transition);
        }

        .sidebar-links a i {
            color: var(--color-primary);
            width: 18px;
            text-align: center;
        }

        .sidebar-links a:hover {
            border-color: var(--color-primary);
            background: var(--color-primary-light);
            transform: translateX(4px);
        }

        .sidebar-cta {
            background: linear-gradient(145deg, var(--color-primary-light), #fff);
            text-align: center;
        }

        .sidebar-cta h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .sidebar-cta p {
            font-size: 0.88rem;
            color: var(--color-text-weak);
            margin-bottom: 18px;
        }

        /* Related Section */
        .related-section {
            padding: 72px 0;
            background: var(--color-surface);
            border-top: 1px solid var(--color-border);
        }

        .section-head {
            text-align: center;
            margin-bottom: 44px;
        }

        .section-eyebrow {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-primary);
            margin-bottom: 8px;
        }

        .section-head h2 {
            font-size: clamp(1.6rem, 2.6vw, 2.2rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            margin: 0 0 10px;
        }

        .section-head p {
            color: var(--color-text-weak);
            font-size: 0.98rem;
            max-width: 500px;
            margin: 0 auto;
        }

        .related-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(64, 80, 224, 0.3);
        }

        .related-cover {
            position: relative;
            overflow: hidden;
            height: 190px;
        }

        .related-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }

        .related-card:hover .related-cover img {
            transform: scale(1.06);
        }

        .related-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(12, 18, 34, 0.35));
        }

        .related-cat {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: rgba(255, 255, 255, 0.92);
            color: var(--color-primary-dark);
            font-size: 0.76rem;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 999px;
            backdrop-filter: blur(6px);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
        }

        .related-body {
            padding: 22px 24px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .related-body h3 {
            font-size: 1.08rem;
            font-weight: 700;
            line-height: 1.45;
            margin-bottom: 10px;
        }

        .related-body h3 a {
            color: var(--color-text);
        }

        .related-body h3 a:hover {
            color: var(--color-primary);
        }

        .related-body p {
            font-size: 0.88rem;
            color: var(--color-text-weak);
            line-height: 1.7;
            margin-bottom: 18px;
            flex: 1;
        }

        .related-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--color-primary);
        }

        .related-link:hover {
            gap: 12px;
            color: var(--color-primary-dark);
        }

        /* FAQ Section */
        .faq-section {
            padding: 72px 0;
            background: var(--color-bg);
        }

        .faq-accordion {
            max-width: 860px;
            margin: 0 auto;
        }

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

        .faq-accordion .accordion-button {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            padding: 18px 24px;
            background: transparent;
            box-shadow: none;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--color-primary);
            background: var(--color-primary-light);
        }

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

        .faq-accordion .accordion-button::after {
            background-size: 12px;
            opacity: 0.6;
        }

        .faq-accordion .accordion-body {
            padding: 6px 24px 22px;
            color: var(--color-text-weak);
            font-size: 0.95rem;
            line-height: 1.85;
        }

        /* CTA Section */
        .cta-section {
            padding: 40px 0 90px;
            background: var(--color-bg);
        }

        .cta-box {
            background: linear-gradient(128deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -30%;
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.14), transparent 60%);
            border-radius: 50%;
        }

        .cta-box::after {
            content: '';
            position: absolute;
            bottom: -50%;
            left: -20%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.22), transparent 65%);
            border-radius: 50%;
        }

        .cta-box h2 {
            font-size: clamp(1.6rem, 2.8vw, 2.3rem);
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-box p {
            font-size: 1rem;
            opacity: 0.82;
            max-width: 520px;
            margin: 0 auto 28px;
            position: relative;
            z-index: 1;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        /* Footer */
        .site-footer {
            background: var(--color-dark);
            color: #A6B3C9;
            padding-top: 64px;
        }

        .footer-top {
            display: flex;
            justify-content: space-between;
            gap: 40px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            flex-wrap: wrap;
        }

        .footer-brand {
            max-width: 360px;
        }

        .footer-brand .brand-name {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.25rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-brand .brand-icon {
            width: 40px;
            height: 40px;
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.8;
            margin: 0;
        }

        .footer-links {
            display: flex;
            gap: 56px;
            flex-wrap: wrap;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

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

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

        .footer-col a {
            font-size: 0.88rem;
            color: #A6B3C9;
            transition: var(--transition);
        }

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

        .footer-bottom {
            padding: 22px 0;
            text-align: center;
            font-size: 0.85rem;
            color: #6B7892;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        /* Responsive */
        @media (max-width: 991.98px) {
            .navbar-collapse {
                padding-top: 14px;
                border-top: 1px solid var(--color-border);
                margin-top: 12px;
            }

            .navbar-nav {
                margin-bottom: 12px !important;
            }

            .nav-right {
                flex-direction: column;
                align-items: stretch;
                gap: 10px;
            }

            .search-box {
                min-width: 100%;
            }

            .btn-nav {
                justify-content: center;
            }

            .article-hero {
                padding: 64px 0 54px;
            }

            .article-aside {
                position: static;
                margin-top: 24px;
            }

            .article-body {
                padding: 28px 24px 12px;
            }

            .article-tags {
                padding: 14px 24px 30px;
            }

            .footer-top {
                flex-direction: column;
                gap: 36px;
            }

            .cta-box {
                padding: 44px 24px;
            }
        }

        @media (max-width: 767.98px) {
            .site-header .navbar {
                padding-top: 10px;
                padding-bottom: 10px;
            }

            .article-section {
                padding: 36px 0 52px;
            }

            .related-section,
            .faq-section {
                padding: 52px 0;
            }

            .cta-section {
                padding-bottom: 60px;
            }

            .hero-description {
                font-size: 0.96rem;
            }
        }

        @media (max-width: 575.98px) {
            .navbar-brand {
                font-size: 1.05rem;
            }

            .brand-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }

            .article-hero-content h1 {
                font-size: 1.5rem;
            }

            .breadcrumb-nav {
                font-size: 0.78rem;
                gap: 7px;
            }

            .article-body {
                padding: 20px 16px 8px;
                font-size: 0.97rem;
            }

            .article-tags {
                padding: 10px 16px 24px;
            }

            .btn {
                padding: 9px 18px;
                font-size: 0.92rem;
            }

            .cta-box h2 {
                font-size: 1.35rem;
            }

            .related-card {
                margin-bottom: 16px;
            }

            .footer-links {
                gap: 32px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1a56db;
            --primary-light: #3b82f6;
            --primary-dark: #0f3f9e;
            --accent: #06b6d4;
            --bg: #f6f8fb;
            --card-bg: #ffffff;
            --dark: #0b1526;
            --text: #1f2a3d;
            --muted: #5a6b85;
            --border: #e3e9f1;
            --radius-sm: 10px;
            --radius: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(13, 31, 62, .06);
            --shadow: 0 6px 24px rgba(13, 31, 62, .08);
            --shadow-lg: 0 16px 40px rgba(13, 31, 62, .12);
            --sp-1: 8px;
            --sp-2: 16px;
            --sp-3: 24px;
            --sp-4: 40px;
            --sp-5: 64px;
            --sp-6: 96px;
        }

        *,
        *::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;
            font-size: 1rem;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color .2s ease;
        }

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

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

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

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

        .section-head {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 52px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(26, 86, 219, .08);
            color: var(--primary);
            font-size: .85rem;
            font-weight: 700;
            padding: 7px 18px;
            border-radius: 40px;
            letter-spacing: .4px;
        }

        .section-head h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--dark);
            margin: 16px 0 12px;
            line-height: 1.3;
        }

        .section-head p {
            color: var(--muted);
            font-size: 1.05rem;
            margin: 0;
        }

        /* ===== Header Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, .88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(227, 233, 241, .8);
            box-shadow: 0 2px 20px rgba(13, 31, 62, .04);
        }

        .site-header .navbar {
            padding: 14px 0;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 900;
            font-size: 1.3rem;
            color: var(--dark);
            letter-spacing: .2px;
            white-space: nowrap;
        }

        .navbar-brand:hover {
            color: var(--dark);
        }

        .brand-icon {
            width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 12px;
            color: #fff;
            font-size: 1.05rem;
            box-shadow: 0 6px 18px rgba(26, 86, 219, .3);
            flex-shrink: 0;
        }

        .navbar .navbar-nav {
            gap: 2px;
        }

        .navbar .nav-link {
            font-weight: 600;
            color: var(--text);
            padding: 8px 18px !important;
            border-radius: 10px;
            transition: all .2s ease;
            position: relative;
            font-size: .95rem;
        }

        .navbar .nav-link:hover {
            color: var(--primary);
            background: rgba(26, 86, 219, .06);
        }

        .navbar .nav-link.active {
            color: var(--primary);
            background: rgba(26, 86, 219, .1);
            font-weight: 700;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 40px;
            padding: 8px 16px;
            width: 220px;
            transition: all .25s ease;
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(26, 86, 219, .1);
            width: 260px;
        }

        .search-box i {
            color: var(--muted);
            font-size: .85rem;
        }

        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            width: 100%;
            font-size: .88rem;
            color: var(--text);
        }

        .search-box input::placeholder {
            color: var(--muted);
        }

        .btn-nav {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            padding: 10px 24px;
            border-radius: 40px;
            font-weight: 700;
            font-size: .92rem;
            box-shadow: 0 6px 18px rgba(26, 86, 219, .25);
            transition: all .25s ease;
            border: none;
            white-space: nowrap;
        }

        .btn-nav:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 26px rgba(26, 86, 219, .32);
            color: #fff;
        }

        .navbar-toggler {
            border: none;
            padding: 8px 10px;
            font-size: 1.25rem;
            color: var(--dark);
            background: rgba(26, 86, 219, .08);
            border-radius: 10px;
        }

        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid rgba(26, 86, 219, .3);
        }

        /* ===== Buttons ===== */
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--primary);
            color: #fff;
            padding: 13px 32px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            box-shadow: 0 8px 24px rgba(26, 86, 219, .28);
            transition: all .25s ease;
        }

        .btn-primary-custom:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(26, 86, 219, .36);
            color: #fff;
        }

        .btn-outline-light-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            border: 2px solid rgba(255, 255, 255, .75);
            color: #fff;
            padding: 11px 28px;
            border-radius: 50px;
            font-weight: 700;
            font-size: .95rem;
            background: transparent;
            transition: all .25s ease;
        }

        .btn-outline-light-custom:hover {
            background: rgba(255, 255, 255, .15);
            color: #fff;
            border-color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            background: linear-gradient(135deg, rgba(11, 21, 38, .93), rgba(15, 63, 158, .85)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: 120px 0 100px;
            color: #fff;
            text-align: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .14);
            border: 1px solid rgba(255, 255, 255, .2);
            color: #fff;
            font-size: .9rem;
            font-weight: 600;
            padding: 8px 22px;
            border-radius: 40px;
            backdrop-filter: blur(6px);
            margin-bottom: 24px;
        }

        .page-hero h1 {
            font-size: 3.2rem;
            font-weight: 900;
            margin: 0 0 18px;
            letter-spacing: 1px;
            line-height: 1.25;
        }

        .page-hero h1 span {
            color: #7dd3fc;
        }

        .page-hero .hero-desc {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, .85);
            max-width: 640px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }

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

        .hero-breadcrumb {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-size: .9rem;
            color: rgba(255, 255, 255, .7);
            margin-top: 40px;
        }

        .hero-breadcrumb a {
            color: rgba(255, 255, 255, .85);
        }

        .hero-breadcrumb a:hover {
            color: #fff;
        }

        .hero-breadcrumb i {
            font-size: .7rem;
            opacity: .7;
        }

        /* ===== News Section ===== */
        .news-section {
            padding: var(--sp-6) 0 var(--sp-5);
        }

        .filter-tabs {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 44px;
        }

        .filter-tab {
            background: #fff;
            border: 1px solid var(--border);
            color: var(--text);
            font-size: .9rem;
            font-weight: 600;
            padding: 9px 22px;
            border-radius: 40px;
            cursor: pointer;
            transition: all .22s ease;
        }

        .filter-tab:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(26, 86, 219, .04);
        }

        .filter-tab.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 6px 18px rgba(26, 86, 219, .28);
        }

        .news-card-wrap {
            transition: opacity .2s ease;
        }

        .news-card-wrap[style*="display: none"] {
            opacity: 0;
        }

        .news-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all .3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(26, 86, 219, .25);
        }

        .news-cover {
            position: relative;
            height: 220px;
            overflow: hidden;
        }

        .news-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .news-card:hover .news-cover img {
            transform: scale(1.05);
        }

        .news-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 21, 38, .35), transparent 60%);
        }

        .news-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: rgba(255, 255, 255, .92);
            color: var(--primary);
            font-size: .78rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 40px;
            backdrop-filter: blur(4px);
            box-shadow: 0 2px 10px rgba(0, 0, 0, .08);
        }

        .news-body {
            padding: 24px 22px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            color: var(--muted);
            font-size: .82rem;
            margin-bottom: 10px;
        }

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

        .news-body h3 {
            font-size: 1.12rem;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.45;
            margin: 0 0 10px;
        }

        .news-body p {
            color: var(--muted);
            font-size: .9rem;
            line-height: 1.7;
            margin: 0 0 18px;
            flex: 1;
        }

        .news-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 700;
            font-size: .9rem;
            transition: gap .2s ease;
        }

        .news-link:hover {
            gap: 12px;
            color: var(--primary-dark);
        }

        /* ===== About Band ===== */
        .about-band {
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: var(--sp-5) 0;
        }

        .about-wrap {
            display: flex;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
        }

        .about-text {
            flex: 1 1 380px;
        }

        .about-text .section-tag {
            margin-bottom: 12px;
        }

        .about-text h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--dark);
            margin: 0 0 16px;
            line-height: 1.35;
        }

        .about-text p {
            color: var(--muted);
            font-size: 1rem;
            margin: 0;
        }

        .about-points {
            flex: 1 1 320px;
            display: grid;
            gap: 14px;
        }

        .point-item {
            display: flex;
            align-items: center;
            gap: 14px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 16px 20px;
            font-weight: 700;
            color: var(--dark);
            font-size: .95rem;
            transition: all .22s ease;
        }

        .point-item i {
            color: var(--primary);
            font-size: 1.2rem;
            width: 22px;
            text-align: center;
            flex-shrink: 0;
        }

        .point-item:hover {
            border-color: rgba(26, 86, 219, .3);
            box-shadow: var(--shadow-sm);
            transform: translateX(4px);
        }

        /* ===== Timeline ===== */
        .timeline-section {
            padding: var(--sp-6) 0;
        }

        .timeline-wrap {
            max-width: 780px;
            margin: 0 auto;
        }

        .timeline {
            position: relative;
            padding-left: 34px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 12px;
            top: 6px;
            bottom: 6px;
            width: 2px;
            background: linear-gradient(to bottom, var(--primary), var(--accent));
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            padding: 0 0 34px 26px;
        }

        .timeline-item:last-child {
            padding-bottom: 0;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -28px;
            top: 6px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid #fff;
            box-shadow: 0 0 0 2px rgba(26, 86, 219, .35);
            z-index: 2;
        }

        .timeline-date {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(26, 86, 219, .08);
            color: var(--primary);
            font-size: .82rem;
            font-weight: 700;
            padding: 4px 16px;
            border-radius: 40px;
            margin-bottom: 10px;
        }

        .timeline-item h3 {
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--dark);
            margin: 0 0 8px;
        }

        .timeline-item p {
            color: var(--muted);
            font-size: .92rem;
            margin: 0;
        }

        /* ===== Stats Band ===== */
        .stats-band {
            background: linear-gradient(135deg, var(--dark), #141e35);
            padding: var(--sp-5) 0;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .stats-band::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 240px;
            height: 240px;
            background: radial-gradient(circle, rgba(59, 130, 246, .25), transparent 70%);
            border-radius: 50%;
        }

        .stats-band .section-head h2 {
            color: #fff;
        }

        .stats-band .section-head p {
            color: rgba(255, 255, 255, .7);
        }

        .stats-band .section-tag {
            background: rgba(255, 255, 255, .12);
            color: #7dd3fc;
        }

        .stat-item {
            text-align: center;
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: var(--radius);
            padding: 32px 20px;
            backdrop-filter: blur(6px);
            transition: all .3s ease;
            height: 100%;
        }

        .stat-item:hover {
            background: rgba(255, 255, 255, .1);
            transform: translateY(-4px);
        }

        .stat-icon {
            font-size: 1.4rem;
            color: #7dd3fc;
            margin-bottom: 14px;
        }

        .stat-num {
            font-size: 2.6rem;
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: 1px;
        }

        .stat-label {
            font-size: .9rem;
            color: rgba(255, 255, 255, .7);
            margin-top: 6px;
            font-weight: 500;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: var(--sp-6) 0;
            background: #fff;
            border-top: 1px solid var(--border);
        }

        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }

        .accordion {
            border: none;
        }

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

        .accordion-button {
            background: #fff;
            color: var(--dark);
            font-weight: 700;
            padding: 20px 24px;
            font-size: 1rem;
            border: none;
            transition: all .2s ease;
        }

        .accordion-button:not(.collapsed) {
            background: rgba(26, 86, 219, .04);
            color: var(--primary);
            box-shadow: none;
        }

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

        .accordion-button::after {
            background-size: .85rem;
            opacity: .6;
        }

        .accordion-body {
            padding: 0 24px 22px;
            color: var(--muted);
            line-height: 1.8;
            font-size: .95rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: var(--sp-6) 0;
        }

        .cta-card {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: 0 24px 50px rgba(26, 86, 219, .3);
        }

        .cta-card::before {
            content: '';
            position: absolute;
            top: -80px;
            left: -80px;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(255, 255, 255, .18), transparent 70%);
            border-radius: 50%;
        }

        .cta-card::after {
            content: '';
            position: absolute;
            bottom: -100px;
            right: -60px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(6, 182, 212, .3), transparent 70%);
            border-radius: 50%;
        }

        .cta-card h2 {
            font-size: 2rem;
            font-weight: 900;
            margin: 0 0 14px;
            position: relative;
            z-index: 2;
        }

        .cta-card p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, .85);
            max-width: 560px;
            margin: 0 auto 30px;
            position: relative;
            z-index: 2;
        }

        .subscribe-form {
            display: flex;
            gap: 10px;
            max-width: 480px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }

        .subscribe-form input {
            flex: 1;
            border: none;
            border-radius: 50px;
            padding: 14px 22px;
            font-size: .95rem;
            outline: none;
            box-shadow: 0 4px 12px rgba(0, 0, 0, .12);
        }

        .subscribe-form input:focus {
            box-shadow: 0 0 0 4px rgba(255, 255, 255, .25);
        }

        .subscribe-form button {
            background: #fff;
            color: var(--primary);
            border: none;
            border-radius: 50px;
            padding: 14px 28px;
            font-weight: 800;
            font-size: .95rem;
            cursor: pointer;
            transition: all .22s ease;
            box-shadow: 0 4px 12px rgba(0, 0, 0, .12);
            white-space: nowrap;
        }

        .subscribe-form button:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, .18);
        }

        .subscribe-form button:disabled {
            opacity: .85;
            transform: none;
            cursor: default;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, .75);
            padding: 56px 0 0;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, .1);
        }

        .footer-brand .brand-name {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 900;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-brand .brand-icon {
            width: 38px;
            height: 38px;
            font-size: 1rem;
        }

        .footer-brand p {
            font-size: .92rem;
            color: rgba(255, 255, 255, .6);
            line-height: 1.8;
            margin: 0;
            max-width: 360px;
        }

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

        .footer-col h4 {
            color: #fff;
            font-size: .95rem;
            font-weight: 700;
            margin: 0 0 16px;
        }

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

        .footer-col ul a {
            color: rgba(255, 255, 255, .65);
            font-size: .9rem;
            transition: all .2s ease;
        }

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

        .footer-bottom {
            padding: 22px 0;
            text-align: center;
            font-size: .85rem;
            color: rgba(255, 255, 255, .45);
            border-top: 1px solid rgba(255, 255, 255, .06);
        }

        /* ===== Responsive ===== */
        @media (max-width: 991px) {
            .navbar-collapse {
                background: #fff;
                border-radius: 16px;
                padding: 20px 22px;
                margin-top: 14px;
                box-shadow: var(--shadow-lg);
                border: 1px solid var(--border);
            }

            .navbar .navbar-nav {
                gap: 4px;
                margin-bottom: 16px !important;
            }

            .navbar .nav-link {
                padding: 10px 14px !important;
                border-radius: 8px;
            }

            .nav-right {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
                width: 100%;
            }

            .search-box {
                width: 100%;
            }

            .search-box:focus-within {
                width: 100%;
            }

            .btn-nav {
                justify-content: center;
            }

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

        @media (max-width: 768px) {
            .page-hero {
                padding: 90px 0 70px;
            }

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

            .page-hero .hero-desc {
                font-size: 1.05rem;
            }

            .section-head h2 {
                font-size: 1.7rem;
            }

            .section-pad {
                padding: 56px 0;
            }

            .about-wrap {
                gap: 28px;
            }

            .about-text h2 {
                font-size: 1.6rem;
            }

            .cta-card {
                padding: 40px 24px;
            }

            .cta-card h2 {
                font-size: 1.5rem;
            }

            .subscribe-form {
                flex-direction: column;
            }

            .subscribe-form button {
                width: 100%;
            }

            .news-cover {
                height: 190px;
            }

            .stat-num {
                font-size: 2rem;
            }
        }

        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.75rem;
                letter-spacing: .5px;
            }

            .page-hero .hero-desc {
                font-size: .95rem;
            }

            .hero-actions {
                flex-direction: column;
                align-items: center;
            }

            .btn-primary-custom,
            .btn-outline-light-custom {
                width: 100%;
                justify-content: center;
            }

            .filter-tabs {
                gap: 8px;
            }

            .filter-tab {
                padding: 7px 16px;
                font-size: .83rem;
            }

            .section-head h2 {
                font-size: 1.45rem;
            }

            .timeline {
                padding-left: 24px;
            }

            .timeline-item {
                padding-left: 18px;
            }

            .timeline-item::before {
                left: -22px;
            }

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

            .cta-card {
                padding: 32px 18px;
            }

            .cta-card p {
                font-size: .95rem;
            }

            .stat-num {
                font-size: 1.7rem;
            }

            .stat-item {
                padding: 24px 14px;
            }
        }