/* roulang page: index */
:root {
        --primary: #2B5FA8;
        --primary-light: #EEF3FA;
        --accent: #12A150;
        --cta: #F58A07;
        --cta-hover: #DD7800;
        --text-main: #26313D;
        --text-sub: #5B6B7C;
        --text-weak: #8A98A8;
        --border: #E3EAF1;
        --card-bg: #FFFFFF;
        --page-bg: #F6F8FB;
        --footer-bg: #0D1B2B;
        --radius-card: 16px;
        --radius-btn: 10px;
        --radius-badge: 999px;
        --shadow-card: 0 4px 20px rgba(43, 95, 168, 0.06);
        --shadow-hover: 0 12px 32px rgba(43, 95, 168, 0.12);
        --gap: 24px;
        --container: 1200px;
        --transition: 0.3s ease;
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
        font-size: 16px;
        line-height: 1.7;
        color: var(--text-main);
        background-color: var(--page-bg);
        -webkit-font-smoothing: antialiased;
    }

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

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

    a:focus-visible {
        outline: 2px solid var(--primary);
        outline-offset: 2px;
    }

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

    input,
    select,
    textarea {
        font-family: inherit;
    }

    ul,
    ol {
        list-style: none;
    }

    .container {
        max-width: var(--container);
        margin: 0 auto;
        padding-left: 24px;
        padding-right: 24px;
    }

    .section {
        padding: 80px 0;
    }

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

    .section-white {
        background-color: #fff;
    }

    .section-title {
        font-size: 28px;
        font-weight: 700;
        line-height: 1.3;
        color: var(--text-main);
        margin-bottom: 12px;
        text-align: center;
    }

    .section-subtitle {
        font-size: 16px;
        color: var(--text-sub);
        text-align: center;
        max-width: 680px;
        margin: 0 auto 48px;
        line-height: 1.7;
    }

    .section-head {
        text-align: center;
        margin-bottom: 48px;
    }

    .section-head .section-title {
        margin-bottom: 12px;
    }

    .section-head .section-subtitle {
        margin-bottom: 0;
    }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        font-size: 16px;
        font-weight: 600;
        line-height: 1;
        padding: 14px 32px;
        border-radius: var(--radius-btn);
        transition: all var(--transition);
        white-space: nowrap;
    }

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

    .btn-primary:hover {
        background-color: var(--cta-hover);
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(245, 138, 7, 0.3);
    }

    .btn-primary:active {
        transform: translateY(1px);
        box-shadow: none;
    }

    .btn-outline {
        background-color: #fff;
        border: 2px solid var(--primary);
        color: var(--primary);
    }

    .btn-outline:hover {
        background-color: var(--primary-light);
    }

    .tag {
        display: inline-block;
        background: var(--primary-light);
        color: var(--primary);
        font-size: 13px;
        font-weight: 500;
        padding: 4px 14px;
        border-radius: var(--radius-badge);
        line-height: 1.5;
    }

    .tag-green {
        background: rgba(18, 161, 80, 0.1);
        color: var(--accent);
    }

    /* ===== Header / Nav ===== */
    .site-header {
        background: #fff;
        border-bottom: 1px solid var(--border);
        position: sticky;
        top: 0;
        z-index: 100;
    }

    .header-inner {
        max-width: var(--container);
        margin: 0 auto;
        padding: 0 24px;
    }

    .header-top {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 72px;
    }

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

    .brand-icon {
        width: 40px;
        height: 40px;
        border-radius: 10px;
        background: var(--primary);
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 20px;
        font-weight: 700;
        flex-shrink: 0;
    }

    .brand-text {
        font-size: 20px;
        font-weight: 700;
        color: var(--text-main);
        letter-spacing: 0.02em;
        line-height: 1.2;
    }

    .brand-text span {
        color: var(--primary);
    }

    .header-actions {
        display: flex;
        align-items: center;
        gap: 16px;
    }

    .header-phone {
        font-size: 14px;
        color: var(--text-sub);
        white-space: nowrap;
    }

    .header-cta {
        padding: 10px 22px;
        font-size: 14px;
        background-color: var(--cta);
        color: #fff;
        border-radius: var(--radius-btn);
        font-weight: 600;
        transition: all var(--transition);
        white-space: nowrap;
    }

    .header-cta:hover {
        background-color: var(--cta-hover);
        transform: translateY(-1px);
    }

    .channel-nav {
        border-top: 1px solid var(--border);
        position: relative;
    }

    .channel-list {
        display: flex;
        gap: 28px;
        overflow-x: auto;
        scrollbar-width: none;
        -ms-overflow-style: none;
        padding: 0;
    }

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

    .channel-item {
        flex-shrink: 0;
    }

    .channel-link {
        display: block;
        padding: 14px 6px;
        font-size: 15px;
        font-weight: 500;
        color: var(--text-sub);
        border-bottom: 3px solid transparent;
        transition: all var(--transition);
        line-height: 1.4;
        white-space: nowrap;
    }

    .channel-link:hover {
        color: var(--primary);
        background: rgba(43, 95, 168, 0.05);
        border-radius: 6px 6px 0 0;
    }

    .channel-link.active {
        color: var(--primary);
        font-weight: 600;
        border-bottom-color: var(--primary);
        background: rgba(43, 95, 168, 0.06);
        border-radius: 6px 6px 0 0;
    }

    /* ===== Hero ===== */
    .hero {
        background-color: var(--primary-light);
        padding: 72px 0 80px;
        position: relative;
        overflow: hidden;
    }

    .hero-bg {
        position: absolute;
        inset: 0;
        background-image: url('/assets/images/backpic/back-1.webp');
        background-size: cover;
        background-position: center;
        opacity: 0.6;
    }

    .hero-bg::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(90deg, rgba(238, 243, 250, 0.92) 0%, rgba(238, 243, 250, 0.75) 50%, rgba(238, 243, 250, 0.35) 100%);
    }

    .hero-inner {
        position: relative;
        z-index: 2;
        display: grid;
        grid-template-columns: 1.1fr 0.9fr;
        gap: 48px;
        align-items: center;
    }

    .hero-content {
        max-width: 600px;
    }

    .hero h1 {
        font-size: 46px;
        font-weight: 700;
        line-height: 1.25;
        color: var(--text-main);
        margin-bottom: 20px;
    }

    .hero h1 span {
        color: var(--primary);
    }

    .hero-sub {
        font-size: 18px;
        color: var(--text-sub);
        line-height: 1.7;
        margin-bottom: 32px;
        max-width: 520px;
    }

    .hero-actions {
        display: flex;
        gap: 16px;
        flex-wrap: wrap;
        margin-bottom: 40px;
    }

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

    .hero-tag {
        background: #fff;
        padding: 6px 16px;
        border-radius: var(--radius-badge);
        font-size: 13px;
        color: var(--text-sub);
        box-shadow: 0 2px 8px rgba(43, 95, 168, 0.06);
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }

    .hero-tag::before {
        content: '✓';
        color: var(--accent);
        font-weight: 700;
    }

    .hero-visual {
        position: relative;
        border-radius: var(--radius-card);
        overflow: hidden;
        box-shadow: var(--shadow-card);
    }

    .hero-visual img {
        width: 100%;
        height: 360px;
        object-fit: cover;
    }

    .hero-visual-caption {
        position: absolute;
        bottom: 16px;
        left: 16px;
        background: rgba(255, 255, 255, 0.92);
        backdrop-filter: blur(4px);
        padding: 10px 18px;
        border-radius: 10px;
        font-size: 13px;
        color: var(--text-main);
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    }

    /* ===== Pain Points ===== */
    .pain-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: var(--gap);
    }

    .pain-card {
        background: var(--card-bg);
        border-radius: var(--radius-card);
        padding: 32px 24px;
        box-shadow: var(--shadow-card);
        transition: all var(--transition);
    }

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

    .pain-icon {
        width: 48px;
        height: 48px;
        border-radius: 12px;
        background: var(--primary-light);
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 20px;
        font-size: 24px;
    }

    .pain-icon.green {
        background: rgba(18, 161, 80, 0.1);
    }

    .pain-card h3 {
        font-size: 18px;
        font-weight: 600;
        color: var(--text-main);
        margin-bottom: 10px;
        line-height: 1.4;
    }

    .pain-card p {
        font-size: 14px;
        color: var(--text-sub);
        line-height: 1.6;
    }

    /* ===== Solution Cards ===== */
    .solution-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: var(--gap);
    }

    .solution-card {
        background: var(--card-bg);
        border-radius: var(--radius-card);
        padding: 36px 32px;
        box-shadow: var(--shadow-card);
        border-top: 4px solid var(--primary);
        transition: all var(--transition);
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        gap: 24px;
    }

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

    .solution-card-header {
        display: flex;
        gap: 16px;
        align-items: flex-start;
        margin-bottom: 16px;
    }

    .solution-icon {
        width: 44px;
        height: 44px;
        border-radius: 10px;
        background: var(--primary-light);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 22px;
        flex-shrink: 0;
    }

    .solution-card h3 {
        font-size: 20px;
        font-weight: 600;
        color: var(--text-main);
        line-height: 1.4;
        margin-bottom: 6px;
    }

    .solution-card .desc {
        font-size: 14px;
        color: var(--text-sub);
        line-height: 1.6;
    }

    .solution-points {
        margin: 16px 0 8px;
    }

    .solution-points li {
        display: flex;
        align-items: flex-start;
        gap: 10px;
        font-size: 14px;
        color: var(--text-sub);
        padding: 5px 0;
        line-height: 1.5;
    }

    .solution-points li::before {
        content: '✓';
        color: var(--accent);
        font-weight: 700;
        flex-shrink: 0;
        font-size: 15px;
    }

    .solution-card-footer {
        display: flex;
        align-items: center;
        justify-content: space-between;
        border-top: 1px solid var(--border);
        padding-top: 18px;
        margin-top: 8px;
    }

    .solution-link {
        color: var(--primary);
        font-size: 14px;
        font-weight: 500;
        display: inline-flex;
        align-items: center;
        gap: 6px;
        transition: gap var(--transition);
    }

    .solution-link:hover {
        gap: 10px;
        text-decoration: underline;
    }

    .solution-link i {
        font-style: normal;
        font-size: 16px;
    }

    /* ===== Metrics ===== */
    .metrics-section {
        background-color: var(--page-bg);
    }

    .metrics-bar {
        background: var(--primary-light);
        border-radius: var(--radius-card);
        padding: 40px 48px;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 32px;
    }

    .metric-item {
        text-align: center;
    }

    .metric-number {
        font-size: 42px;
        font-weight: 700;
        color: var(--accent);
        line-height: 1.2;
        margin-bottom: 8px;
        font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
    }

    .metric-label {
        font-size: 14px;
        color: var(--text-sub);
        line-height: 1.5;
    }

    /* ===== News / CMS Section ===== */
    .news-section {
        background: #fff;
    }

    .news-layout {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 32px;
        align-items: stretch;
    }

    .news-feature {
        background: #fff;
        border-radius: var(--radius-card);
        overflow: hidden;
        box-shadow: var(--shadow-card);
        transition: all var(--transition);
        display: flex;
        flex-direction: column;
    }

    .news-feature:hover {
        box-shadow: var(--shadow-hover);
    }

    .news-feature-cover {
        height: 220px;
        overflow: hidden;
        background: var(--primary-light);
    }

    .news-feature-cover img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform var(--transition);
    }

    .news-feature:hover .news-feature-cover img {
        transform: scale(1.03);
    }

    .news-feature-body {
        padding: 24px 28px;
        flex: 1;
        display: flex;
        flex-direction: column;
    }

    .news-feature-meta {
        display: flex;
        align-items: center;
        gap: 12px;
        margin-bottom: 12px;
        font-size: 13px;
        color: var(--text-weak);
    }

    .news-feature-title {
        font-size: 20px;
        font-weight: 600;
        line-height: 1.4;
        color: var(--text-main);
        margin-bottom: 10px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .news-feature-title a:hover {
        color: var(--primary);
    }

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

    .news-feature-link {
        color: var(--primary);
        font-size: 14px;
        font-weight: 500;
    }

    .news-feature-link:hover {
        text-decoration: underline;
    }

    .news-list {
        display: flex;
        flex-direction: column;
        gap: 16px;
    }

    .news-item {
        background: #fff;
        border-radius: 12px;
        padding: 20px 24px;
        box-shadow: var(--shadow-card);
        display: flex;
        gap: 16px;
        align-items: center;
        transition: all var(--transition);
        border: 1px solid transparent;
    }

    .news-item:hover {
        box-shadow: var(--shadow-hover);
        border-color: rgba(43, 95, 168, 0.15);
    }

    .news-item-thumb {
        width: 88px;
        height: 66px;
        border-radius: 8px;
        object-fit: cover;
        flex-shrink: 0;
        background: var(--primary-light);
    }

    .news-item-body {
        flex: 1;
        min-width: 0;
    }

    .news-item-title {
        font-size: 15px;
        font-weight: 600;
        color: var(--text-main);
        line-height: 1.4;
        margin-bottom: 6px;
        display: -webkit-box;
        -webkit-line-clamp: 1;
        -webkit-box-orient: vertical;
        overflow: hidden;
        white-space: nowrap;
        text-overflow: ellipsis;
    }

    .news-item-title a:hover {
        color: var(--primary);
    }

    .news-item-meta {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 13px;
        color: var(--text-weak);
    }

    .news-empty {
        grid-column: 1 / -1;
        border: 2px dashed var(--border);
        border-radius: var(--radius-card);
        padding: 60px 24px;
        text-align: center;
        color: var(--text-weak);
        font-size: 15px;
    }

    /* ===== CTA Banner ===== */
    .cta-banner-section {
        background: var(--page-bg);
    }

    .cta-banner {
        background: var(--primary-light);
        border-radius: var(--radius-card);
        padding: 48px 56px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 32px;
        flex-wrap: wrap;
    }

    .cta-banner-title {
        font-size: 24px;
        font-weight: 700;
        color: var(--text-main);
        margin-bottom: 8px;
        line-height: 1.4;
    }

    .cta-banner-desc {
        font-size: 15px;
        color: var(--text-sub);
        line-height: 1.6;
        max-width: 600px;
    }

    .cta-banner .btn {
        flex-shrink: 0;
    }

    /* ===== FAQ ===== */
    .faq-section {
        background: #fff;
        padding-bottom: 80px;
    }

    .faq-list {
        max-width: 860px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 14px;
    }

    .faq-item {
        background: var(--card-bg);
        border-radius: 12px;
        box-shadow: var(--shadow-card);
        border: 1px solid var(--border);
        overflow: hidden;
    }

    .faq-question {
        padding: 20px 24px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        cursor: pointer;
        width: 100%;
        text-align: left;
        background: none;
        border: none;
        font-size: 16px;
        font-weight: 600;
        color: var(--text-main);
        line-height: 1.5;
    }

    .faq-question .faq-icon {
        width: 28px;
        height: 28px;
        border-radius: 50%;
        background: var(--primary-light);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 18px;
        color: var(--primary);
        flex-shrink: 0;
        transition: transform var(--transition);
        font-weight: 300;
    }

    .faq-item.open .faq-icon {
        transform: rotate(45deg);
        background: var(--primary);
        color: #fff;
    }

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .faq-answer-inner {
        padding: 0 24px 20px;
        font-size: 15px;
        color: var(--text-sub);
        line-height: 1.7;
    }

    /* ===== Footer ===== */
    .site-footer {
        background: var(--footer-bg);
        color: #B8C4D0;
        padding: 64px 0 0;
    }

    .footer-top {
        display: grid;
        grid-template-columns: 1.4fr 0.8fr 1fr 1fr;
        gap: 40px;
        padding-bottom: 48px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .footer-brand .brand-text {
        color: #fff;
        margin-bottom: 12px;
    }

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

    .footer-brand .brand-icon {
        background: rgba(255, 255, 255, 0.15);
        color: #fff;
    }

    .footer-desc {
        font-size: 14px;
        color: #8899AA;
        line-height: 1.7;
        margin-top: 8px;
        max-width: 320px;
    }

    .footer-title {
        font-size: 16px;
        font-weight: 600;
        color: #E8EEF4;
        margin-bottom: 16px;
    }

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

    .footer-links a {
        color: #8899AA;
        font-size: 14px;
    }

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

    .footer-contact {
        font-size: 14px;
        line-height: 2;
        color: #8899AA;
    }

    .footer-contact span {
        color: #C0CAD4;
        margin-right: 6px;
    }

    .footer-bottom {
        padding: 20px 0;
        text-align: center;
        font-size: 13px;
        color: #5A6B7C;
        border-top: 1px solid rgba(255, 255, 255, 0.05);
    }

    .footer-bottom a {
        color: #8899AA;
    }

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

    /* ===== Breadcrumb ===== */
    .breadcrumb {
        padding: 20px 0;
        font-size: 13px;
        color: var(--text-weak);
        border-bottom: 1px solid var(--border);
        background: #fff;
    }

    .breadcrumb a {
        color: var(--text-sub);
    }

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

    .breadcrumb span.sep {
        margin: 0 8px;
        color: var(--text-weak);
    }

    /* ===== Article ===== */
    .article-main {
        padding: 48px 0 80px;
        background: #fff;
    }

    .article-container {
        max-width: 800px;
        margin: 0 auto;
        padding: 0 24px;
    }

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

    .article-header h1 {
        font-size: 36px;
        font-weight: 700;
        line-height: 1.3;
        color: var(--text-main);
        margin-bottom: 16px;
    }

    .article-meta {
        display: flex;
        align-items: center;
        gap: 16px;
        flex-wrap: wrap;
        font-size: 14px;
        color: var(--text-weak);
    }

    .article-body h2 {
        font-size: 24px;
        font-weight: 700;
        color: var(--text-main);
        margin: 40px 0 16px;
        line-height: 1.4;
    }

    .article-body h3 {
        font-size: 20px;
        font-weight: 600;
        color: var(--text-main);
        margin: 32px 0 12px;
        line-height: 1.4;
    }

    .article-body p {
        margin-bottom: 20px;
        color: var(--text-main);
        font-size: 16px;
        line-height: 1.8;
    }

    .article-body blockquote {
        border-left: 4px solid var(--primary);
        background: var(--primary-light);
        padding: 16px 24px;
        border-radius: 0 10px 10px 0;
        margin: 24px 0;
        color: var(--text-sub);
        font-size: 15px;
    }

    .article-body ul,
    .article-body ol {
        margin: 16px 0 24px;
        padding-left: 24px;
    }

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

    .article-body img {
        border-radius: 12px;
        margin: 24px 0;
    }

    .article-footer {
        margin-top: 48px;
        padding-top: 24px;
        border-top: 1px solid var(--border);
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 12px;
    }

    .related-section {
        background: var(--page-bg);
        padding: 64px 0;
    }

    .related-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }

    .related-card {
        background: #fff;
        border-radius: var(--radius-card);
        overflow: hidden;
        box-shadow: var(--shadow-card);
        transition: all var(--transition);
    }

    .related-card:hover {
        box-shadow: var(--shadow-hover);
    }

    .related-card img {
        width: 100%;
        height: 140px;
        object-fit: cover;
    }

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

    .related-card h3 {
        font-size: 16px;
        font-weight: 600;
        line-height: 1.5;
        margin-bottom: 8px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

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

    .related-card p {
        font-size: 13px;
        color: var(--text-weak);
    }

    /* ===== Category Pages ===== */
    .category-banner {
        background: var(--primary-light);
        padding: 56px 0;
    }

    .category-banner-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 48px;
        flex-wrap: wrap;
    }

    .category-banner-content {
        flex: 1;
        min-width: 300px;
    }

    .category-banner-content h1 {
        font-size: 36px;
        font-weight: 700;
        line-height: 1.3;
        color: var(--text-main);
        margin-bottom: 14px;
    }

    .category-banner-content p {
        font-size: 16px;
        color: var(--text-sub);
        line-height: 1.7;
        max-width: 580px;
    }

    .category-banner-image {
        flex-shrink: 0;
        width: 360px;
        border-radius: var(--radius-card);
        overflow: hidden;
        box-shadow: var(--shadow-card);
    }

    .category-banner-image img {
        width: 100%;
        height: 220px;
        object-fit: cover;
    }

    .category-content-section {
        padding: 64px 0;
        background: var(--page-bg);
    }

    .category-content-layout {
        display: grid;
        grid-template-columns: 2fr 1fr;
        gap: 32px;
        align-items: flex-start;
    }

    .category-card-list {
        display: flex;
        flex-direction: column;
        gap: 20px;
    }

    .category-card-item {
        background: #fff;
        border-radius: var(--radius-card);
        padding: 24px;
        box-shadow: var(--shadow-card);
        display: flex;
        gap: 20px;
        align-items: center;
        transition: all var(--transition);
    }

    .category-card-item:hover {
        box-shadow: var(--shadow-hover);
    }

    .category-card-item img {
        width: 180px;
        height: 120px;
        border-radius: 10px;
        object-fit: cover;
        flex-shrink: 0;
    }

    .category-card-item .content {
        flex: 1;
    }

    .category-card-item h3 {
        font-size: 18px;
        font-weight: 600;
        color: var(--text-main);
        margin-bottom: 6px;
        line-height: 1.4;
    }

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

    .category-card-item p {
        font-size: 14px;
        color: var(--text-sub);
        line-height: 1.6;
        margin-bottom: 8px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .category-card-item .date {
        font-size: 13px;
        color: var(--text-weak);
    }

    .category-sidebar {
        background: #fff;
        border-radius: var(--radius-card);
        padding: 28px;
        box-shadow: var(--shadow-card);
        position: sticky;
        top: 130px;
    }

    .sidebar-title {
        font-size: 18px;
        font-weight: 700;
        color: var(--text-main);
        margin-bottom: 20px;
        padding-bottom: 12px;
        border-bottom: 1px solid var(--border);
    }

    .sidebar-nav li {
        margin-bottom: 4px;
    }

    .sidebar-nav a {
        display: block;
        padding: 10px 14px;
        border-radius: 8px;
        font-size: 15px;
        color: var(--text-sub);
        transition: all var(--transition);
    }

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

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

    /* ===== Modal ===== */
    .modal-overlay {
        position: fixed;
        inset: 0;
        background: rgba(16, 24, 40, 0.5);
        display: none;
        align-items: center;
        justify-content: center;
        z-index: 200;
        padding: 16px;
        backdrop-filter: blur(2px);
    }

    .modal-overlay.show {
        display: flex;
    }

    .modal-card {
        background: #fff;
        border-radius: 20px;
        max-width: 480px;
        width: 100%;
        overflow: hidden;
        box-shadow: 0 24px 64px rgba(15, 30, 50, 0.18);
        position: relative;
        max-height: 90vh;
        overflow-y: auto;
    }

    .modal-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 6px;
        background: var(--primary);
    }

    .modal-close {
        position: absolute;
        top: 16px;
        right: 16px;
        width: 36px;
        height: 36px;
        border-radius: 50%;
        background: var(--page-bg);
        border: none;
        font-size: 20px;
        color: var(--text-sub);
        display: flex;
        align-items: center;
        justify-content: center;
        z-index: 2;
        transition: all var(--transition);
    }

    .modal-close:hover {
        background: var(--primary);
        color: #fff;
    }

    .modal-content {
        padding: 44px 36px 36px;
    }

    .modal-content h3 {
        font-size: 22px;
        font-weight: 700;
        color: var(--text-main);
        margin-bottom: 8px;
        line-height: 1.4;
    }

    .modal-content .modal-desc {
        font-size: 14px;
        color: var(--text-sub);
        margin-bottom: 24px;
        line-height: 1.6;
    }

    .form-group {
        margin-bottom: 18px;
    }

    .form-group label {
        display: block;
        font-size: 14px;
        font-weight: 500;
        color: var(--text-main);
        margin-bottom: 6px;
    }

    .form-group input,
    .form-group select {
        width: 100%;
        padding: 12px 16px;
        border: 2px solid transparent;
        border-radius: 10px;
        background: var(--page-bg);
        font-size: 15px;
        color: var(--text-main);
        transition: all var(--transition);
    }

    .form-group input:focus,
    .form-group select:focus {
        outline: none;
        border-color: var(--primary);
        background: #fff;
        box-shadow: 0 0 0 4px rgba(43, 95, 168, 0.15);
    }

    .form-group select {
        appearance: none;
        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235B6B7C' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
        background-repeat: no-repeat;
        background-position: right 16px center;
    }

    .form-privacy {
        font-size: 12px;
        color: var(--text-weak);
        line-height: 1.6;
        margin: 16px 0 20px;
    }

    .form-privacy a {
        color: var(--primary);
    }

    .modal-submit {
        width: 100%;
        padding: 14px;
        background: var(--cta);
        color: #fff;
        border: none;
        border-radius: 10px;
        font-size: 16px;
        font-weight: 600;
        cursor: pointer;
        transition: all var(--transition);
    }

    .modal-submit:hover {
        background: var(--cta-hover);
        transform: translateY(-2px);
    }

    /* ===== Scroll to top ===== */
    .scroll-top {
        position: fixed;
        bottom: 32px;
        right: 24px;
        width: 44px;
        height: 44px;
        border-radius: 50%;
        background: var(--primary);
        color: #fff;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 20px;
        box-shadow: var(--shadow-hover);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition);
        z-index: 99;
    }

    .scroll-top.show {
        opacity: 1;
        visibility: visible;
    }

    .scroll-top:hover {
        background: #1d4a86;
    }

    /* ===== Responsive ===== */
    @media (max-width: 1199px) {
        .hero-visual img {
            height: 300px;
        }

        .metrics-bar {
            padding: 32px 24px;
            gap: 16px;
        }

        .metric-number {
            font-size: 34px;
        }
    }

    @media (max-width: 991px) {
        .section {
            padding: 64px 0;
        }

        .hero {
            padding: 56px 0 64px;
        }

        .hero-inner {
            grid-template-columns: 1fr;
            gap: 32px;
        }

        .hero-content {
            max-width: 100%;
            text-align: center;
        }

        .hero-sub {
            margin-left: auto;
            margin-right: auto;
        }

        .hero-actions {
            justify-content: center;
        }

        .hero-tags {
            justify-content: center;
        }

        .hero-visual {
            max-width: 560px;
            margin: 0 auto;
            width: 100%;
        }

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

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

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

        .news-feature-cover {
            height: 200px;
        }

        .metrics-bar {
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .cta-banner {
            flex-direction: column;
            text-align: center;
            padding: 40px 32px;
        }

        .cta-banner .btn {
            margin-top: 8px;
        }

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

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

        .category-sidebar {
            position: static;
        }

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

    @media (max-width: 767px) {
        .container {
            padding-left: 16px;
            padding-right: 16px;
        }

        .section {
            padding: 48px 0;
        }

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

        .header-top {
            height: 64px;
        }

        .brand-text {
            font-size: 17px;
        }

        .header-phone {
            display: none;
        }

        .header-cta {
            padding: 8px 16px;
            font-size: 13px;
        }

        .channel-list {
            gap: 20px;
        }

        .channel-link {
            padding: 12px 4px;
            font-size: 14px;
        }

        .hero {
            padding: 40px 0 48px;
        }

        .hero h1 {
            font-size: 30px;
            line-height: 1.3;
        }

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

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

        .hero-actions .btn {
            width: 100%;
            max-width: 280px;
        }

        .hero-visual img {
            height: 220px;
        }

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

        .solution-card {
            padding: 24px;
        }

        .solution-card-footer {
            flex-direction: column;
            align-items: flex-start;
            gap: 12px;
        }

        .metrics-bar {
            grid-template-columns: 1fr 1fr;
            padding: 24px 16px;
            gap: 20px;
        }

        .metric-number {
            font-size: 30px;
        }

        .news-layout {
            gap: 24px;
        }

        .news-feature-cover {
            height: 180px;
        }

        .news-feature-body {
            padding: 20px;
        }

        .news-item {
            padding: 14px;
            gap: 12px;
        }

        .news-item-thumb {
            width: 64px;
            height: 48px;
        }

        .cta-banner {
            padding: 32px 20px;
        }

        .cta-banner-title {
            font-size: 20px;
        }

        .cta-banner .btn {
            width: 100%;
        }

        .faq-question {
            padding: 16px;
            font-size: 15px;
        }

        .faq-answer-inner {
            padding: 0 16px 16px;
            font-size: 14px;
        }

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

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

        .article-container {
            padding: 0 16px;
        }

        .article-header h1 {
            font-size: 26px;
        }

        .article-meta {
            font-size: 13px;
            gap: 10px;
        }

        .article-body p {
            font-size: 15px;
        }

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

        .category-banner {
            padding: 40px 0;
        }

        .category-banner-inner {
            gap: 24px;
        }

        .category-banner-content h1 {
            font-size: 26px;
        }

        .category-banner-image {
            width: 100%;
        }

        .category-card-item {
            flex-direction: column;
            align-items: flex-start;
        }

        .category-card-item img {
            width: 100%;
            height: 160px;
        }

        .modal-content {
            padding: 36px 20px 24px;
        }

        .modal-content h3 {
            font-size: 18px;
        }
    }

    @media (max-width: 520px) {
        .brand-icon {
            width: 34px;
            height: 34px;
            font-size: 16px;
        }

        .brand-text {
            font-size: 15px;
        }

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

        .solution-card-header {
            flex-direction: column;
            gap: 12px;
        }

        .metrics-bar {
            grid-template-columns: 1fr;
            gap: 16px;
        }

        .metric-number {
            font-size: 32px;
        }

        .news-item-meta {
            font-size: 12px;
        }

        .news-item-title {
            font-size: 14px;
        }

        .btn {
            padding: 12px 24px;
            font-size: 14px;
        }
    }

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #2B5FA8;
            --primary-light: #EEF3FA;
            --green: #12A150;
            --orange: #F58A07;
            --text: #26313D;
            --text-secondary: #5B6B7C;
            --text-muted: #8A98A8;
            --border: #E3EAF1;
            --card-bg: #FFFFFF;
            --page-bg: #F6F8FB;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-tag: 999px;
            --shadow-card: 0 4px 20px rgba(43, 95, 168, 0.06);
            --shadow-hover: 0 12px 32px rgba(43, 95, 168, 0.12);
            --container: 1200px;
            --space: 80px;
        }

        /* ========== Reset / Base ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--page-bg);
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

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

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

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 15px;
            color: var(--text);
            outline: none;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== 按钮 ========== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--orange);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            line-height: 1;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            transition: all 0.2s ease;
            box-shadow: 0 4px 14px rgba(245, 138, 7, 0.25);
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            background: #DD7800;
            color: #fff;
            text-decoration: none;
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(245, 138, 7, 0.32);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 2px 8px rgba(245, 138, 7, 0.25);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #fff;
            color: var(--primary);
            font-size: 16px;
            font-weight: 600;
            line-height: 1;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            border: 2px solid var(--primary);
            transition: all 0.2s ease;
            cursor: pointer;
        }

        .btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary);
            text-decoration: none;
            transform: translateY(-2px);
        }

        /* ========== 标签 / 徽章 ========== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 500;
            padding: 5px 14px;
            border-radius: var(--radius-tag);
            line-height: 1.5;
        }

        .badge-green {
            background: rgba(18, 161, 80, 0.1);
            color: var(--green);
        }

        /* ========== Header ========== */
        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(43, 95, 168, 0.04);
        }

        .header-inner {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
        }

        .brand:hover {
            text-decoration: none;
        }

        .brand-icon {
            width: 42px;
            height: 42px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 700;
            letter-spacing: 1px;
        }

        .brand-text {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.2;
        }

        .brand-text span {
            color: var(--primary);
            margin-left: 2px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .header-phone {
            font-size: 14px;
            color: var(--text-muted);
        }

        .header-cta {
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            transition: all 0.2s ease;
            text-decoration: none;
            line-height: 1.4;
        }

        .header-cta:hover {
            background: #244f8d;
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
        }

        .header-cta:active {
            transform: translateY(0);
        }

        /* 频道导航 */
        .channel-nav {
            border-top: 1px solid var(--border);
        }

        .channel-list {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 0;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

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

        .channel-link {
            display: inline-block;
            padding: 10px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: all 0.2s ease;
            white-space: nowrap;
            text-decoration: none;
            border-bottom: 3px solid transparent;
        }

        .channel-link:hover {
            color: var(--primary);
            background: #f5f7fa;
            text-decoration: none;
        }

        .channel-link.active {
            color: var(--primary);
            font-weight: 600;
            background: var(--primary-light);
            border-bottom-color: var(--primary);
        }

        /* ========== 分类横幅 Hero ========== */
        .category-hero {
            background: var(--primary-light);
            padding: 72px 0 64px;
        }

        .category-hero .inner {
            display: flex;
            align-items: center;
            gap: 60px;
        }

        .category-hero .text-col {
            flex: 1 1 55%;
        }

        .category-hero .image-col {
            flex: 1 1 45%;
        }

        .category-hero .image-col img {
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            width: 100%;
            height: 320px;
            object-fit: cover;
        }

        .category-hero .breadcrumb {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            align-items: center;
        }

        .category-hero .breadcrumb a {
            color: var(--text-muted);
        }

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

        .category-hero h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 16px;
        }

        .category-hero h1 span {
            color: var(--primary);
        }

        .category-hero .lead {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 28px;
            max-width: 560px;
        }

        .category-hero .cta-row {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* 信任标签 */
        .trust-tags {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 30px;
        }

        .trust-tag {
            background: #fff;
            border-radius: var(--radius-tag);
            padding: 8px 18px;
            font-size: 13px;
            color: var(--text-secondary);
            box-shadow: var(--shadow-card);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .trust-tag i {
            width: 6px;
            height: 6px;
            background: var(--green);
            border-radius: 50%;
            display: inline-block;
        }

        /* ========== 板块通用 ========== */
        .section {
            padding: var(--space) 0;
        }

        .section-alt {
            background: #fff;
        }

        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 40px;
            gap: 24px;
        }

        .section-header .left {
            max-width: 720px;
        }

        .section-header h2 {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 10px;
        }

        .section-header .sub {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ========== 注册流程步骤 ========== */
        .steps-section {
            background: #fff;
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .step-card {
            background: var(--page-bg);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            position: relative;
            transition: box-shadow 0.3s ease, transform 0.3s ease;
            border: 1px solid var(--border);
        }

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

        .step-num {
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
        }

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

        .step-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ========== 内容卡片区 ========== */
        .content-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 32px;
            align-items: start;
        }

        .content-card-list {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .content-card {
            display: flex;
            background: #fff;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.3s ease, transform 0.3s ease;
            border: 1px solid var(--border);
        }

        .content-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .content-card .thumb {
            width: 240px;
            min-height: 170px;
            flex-shrink: 0;
        }

        .content-card .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .content-card .body {
            padding: 24px 24px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

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

        .content-card .meta-row .date {
            font-size: 13px;
            color: var(--text-muted);
        }

        .content-card h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.45;
            margin-bottom: 8px;
        }

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

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

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

        .content-card .footer-link {
            margin-top: 12px;
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* 侧栏 */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: 120px;
        }

        .sidebar-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
        }

        .sidebar-card .side-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary-light);
            position: relative;
        }

        .sidebar-card .side-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 42px;
            height: 2px;
            background: var(--primary);
        }

        .side-links {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .side-links a {
            display: block;
            padding: 10px 12px;
            border-radius: 8px;
            font-size: 15px;
            color: var(--text-secondary);
            transition: all 0.2s ease;
            text-decoration: none;
        }

        .side-links a:hover {
            background: var(--primary-light);
            color: var(--primary);
            text-decoration: none;
        }

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

        .side-contact {
            background: var(--primary-light);
            border: none;
        }

        .side-contact p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 18px;
        }

        .side-contact .btn-primary {
            width: 100%;
        }

        /* ========== 数据指标 ========== */
        .stats-bar {
            background: var(--primary-light);
            border-radius: var(--radius-card);
            padding: 40px 32px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin: 0 auto;
        }

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

        .stat-item .num {
            font-size: 42px;
            font-weight: 700;
            color: var(--green);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-item .label {
            font-size: 14px;
            color: var(--text-secondary);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: #fff;
            border-radius: 12px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: box-shadow 0.3s ease;
        }

        .faq-item.open {
            box-shadow: var(--shadow-hover);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 22px 26px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            transition: color 0.2s ease;
        }

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

        .faq-icon {
            width: 28px;
            height: 28px;
            flex-shrink: 0;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 400;
            line-height: 1;
            transition: transform 0.3s ease, background 0.3s ease;
            position: relative;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .faq-answer-inner {
            padding: 0 26px 24px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            border-top: 1px solid var(--border);
            padding-top: 16px;
            margin-top: 0;
        }

        /* ========== CTA 横幅 ========== */
        .cta-banner {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            padding: 48px 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
        }

        .cta-banner .left {
            max-width: 680px;
        }

        .cta-banner h2 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text);
        }

        .cta-banner p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .cta-banner .btn-primary {
            flex-shrink: 0;
            padding: 16px 40px;
            font-size: 17px;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #10233B;
            color: #9AB0C8;
            padding: 64px 0 0;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
        }

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

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: #7E95AD;
            margin-top: 16px;
            max-width: 300px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 2px;
            background: var(--primary);
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            color: #7E95AD;
            font-size: 14px;
            transition: color 0.2s ease;
            text-decoration: none;
        }

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

        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 12px;
            font-size: 14px;
            color: #7E95AD;
        }

        .footer-contact span {
            color: #9AB0C8;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 24px 0;
            text-align: center;
            font-size: 13px;
            color: #5D7388;
        }

        .footer-bottom a {
            color: #7E95AD;
        }

        /* ========== 表单弹层 ========== */
        .modal-overlay {
            position: fixed;
            inset: 0;
            background: rgba(16, 24, 40, 0.5);
            z-index: 1000;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s ease;
        }

        .modal-overlay.active {
            opacity: 1;
            visibility: visible;
        }

        .modal-card {
            background: #fff;
            border-radius: 20px;
            max-width: 480px;
            width: 100%;
            padding: 40px;
            position: relative;
            box-shadow: 0 24px 64px rgba(15, 30, 50, 0.18);
            transform: translateY(20px);
            transition: transform 0.35s ease;
            max-height: 90vh;
            overflow-y: auto;
        }

        .modal-overlay.active .modal-card {
            transform: translateY(0);
        }

        .modal-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 5px;
            background: var(--primary);
            border-radius: 20px 20px 0 0;
        }

        .modal-close {
            position: absolute;
            top: 16px;
            right: 16px;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--text-secondary);
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s ease;
            line-height: 1;
        }

        .modal-close:hover {
            background: var(--primary);
            color: #fff;
        }

        .modal-card h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }

        .modal-card .modal-sub {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 28px;
        }

        .form-group {
            margin-bottom: 18px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            margin-bottom: 8px;
        }

        .form-group input,
        .form-group select {
            width: 100%;
            background: var(--primary-light);
            border: 2px solid transparent;
            border-radius: 10px;
            padding: 12px 16px;
            font-size: 15px;
            color: var(--text);
            transition: all 0.2s ease;
        }

        .form-group input:focus,
        .form-group select:focus {
            background: #fff;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(43, 95, 168, 0.15);
        }

        .privacy-note {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 16px 0 20px;
        }

        .modal-card .btn-primary {
            width: 100%;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1199px) {
            .container {
                padding: 0 32px;
            }

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

            .content-grid {
                grid-template-columns: 1.6fr 1fr;
                gap: 24px;
            }

            .content-card .thumb {
                width: 200px;
            }
        }

        @media (max-width: 991px) {
            .category-hero {
                padding: 48px 0;
            }

            .category-hero .inner {
                flex-direction: column;
                gap: 32px;
            }

            .category-hero .image-col img {
                height: 260px;
            }

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

            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
            }

            .cta-banner {
                flex-direction: column;
                text-align: center;
                padding: 40px 32px;
            }

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

            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
        }

        @media (max-width: 767px) {
            :root {
                --space: 48px;
            }

            .container {
                padding: 0 16px;
            }

            .header-top {
                padding: 12px 0;
            }

            .brand-icon {
                width: 36px;
                height: 36px;
                font-size: 18px;
            }

            .brand-text {
                font-size: 18px;
            }

            .header-phone {
                display: none;
            }

            .header-cta {
                font-size: 13px;
                padding: 8px 14px;
            }

            .channel-list {
                gap: 4px;
            }

            .channel-link {
                padding: 8px 14px;
                font-size: 14px;
            }

            .category-hero h1 {
                font-size: 30px;
            }

            .category-hero .lead {
                font-size: 15px;
            }

            .section-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }

            .section-header h2 {
                font-size: 24px;
            }

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

            .content-card {
                flex-direction: column;
            }

            .content-card .thumb {
                width: 100%;
                height: 180px;
            }

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

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

            .faq-question {
                padding: 18px 20px;
                font-size: 15px;
            }

            .faq-answer-inner {
                padding: 14px 20px 20px;
            }

            .stats-bar {
                grid-template-columns: 1fr 1fr;
                padding: 28px 16px;
            }

            .stat-item .num {
                font-size: 32px;
            }

            .cta-banner {
                padding: 32px 24px;
            }

            .cta-banner h2 {
                font-size: 22px;
            }

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

            .modal-card {
                padding: 32px 24px;
                border-radius: 20px 20px 0 0;
                max-width: 100%;
                margin-top: auto;
            }

            .modal-overlay {
                align-items: flex-end;
                padding: 0;
            }
        }

        @media (max-width: 519px) {
            .stats-bar {
                grid-template-columns: 1fr;
            }

            .content-card .thumb {
                height: 150px;
            }

            .category-hero .image-col img {
                height: 200px;
            }

            .cta-row .btn-primary,
            .cta-row .btn-outline {
                width: 100%;
            }
        }

/* roulang page: article */
:root {
  --primary: #2B5FA8;
  --primary-dark: #244D8A;
  --primary-light: #EEF3FA;
  --green: #12A150;
  --orange: #F58A07;
  --orange-dark: #DD7800;
  --text-1: #26313D;
  --text-2: #5B6B7C;
  --text-3: #8A98A8;
  --border: #E3EAF1;
  --bg-page: #F6F8FB;
  --bg-white: #FFFFFF;
  --footer-bg: #0D1B2B;
  --footer-text: #A7B4C3;
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-tag: 999px;
  --shadow-1: 0 4px 20px rgba(43, 95, 168, 0.06);
  --shadow-2: 0 12px 32px rgba(43, 95, 168, 0.12);
  --shadow-3: 0 24px 64px rgba(15, 30, 50, 0.18);
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --container: 1200px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-1);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; transition: color .2s, background .2s, box-shadow .2s, transform .2s; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; font-size: 15px; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ===== Header / Nav ===== */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: box-shadow .3s;
}
.site-header.scrolled { box-shadow: 0 6px 24px rgba(43, 95, 168, .08); }
.header-inner { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.header-top { display: flex; align-items: center; justify-content: space-between; padding: 16px 0; gap: 20px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-icon {
  width: 38px; height: 38px; background: var(--primary); color: #fff;
  border-radius: 10px; display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 700; flex-shrink: 0;
}
.brand-text { font-size: 20px; font-weight: 700; color: var(--text-1); line-height: 1.2; white-space: nowrap; }
.brand-text span { color: var(--primary); font-weight: 600; font-size: 14px; display: block; }
.header-actions { display: flex; align-items: center; gap: 16px; }
.header-phone { font-size: 14px; color: var(--text-2); white-space: nowrap; }
.header-cta {
  background: var(--orange); color: #fff; padding: 10px 22px;
  border-radius: var(--radius-btn); font-size: 14px; font-weight: 600;
  white-space: nowrap; transition: background .2s, transform .2s, box-shadow .2s;
}
.header-cta:hover { background: var(--orange-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 16px rgba(245, 138, 7, .25); }
.channel-nav { border-top: 1px solid var(--border); }
.channel-list { list-style: none; display: flex; gap: 2px; padding: 0; }
.channel-link {
  display: block; padding: 12px 16px; font-size: 15px; font-weight: 500;
  color: var(--text-2); border-radius: 8px 8px 0 0; position: relative; white-space: nowrap;
}
.channel-link:hover { color: var(--primary); background: var(--primary-light); }
.channel-link.active { color: var(--primary); font-weight: 600; background: var(--primary-light); }
.channel-link.active::after { content: ''; position: absolute; bottom: 0; left: 16px; right: 16px; height: 3px; background: var(--primary); border-radius: 3px 3px 0 0; }

/* ===== Article Hero ===== */
.article-hero {
  background-color: var(--primary-light);
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  position: relative;
  padding: 56px 0 48px;
}
.article-hero::before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: rgba(238, 243, 250, .92); }
.article-hero .container { position: relative; z-index: 1; }
.breadcrumb { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; font-size: 13px; color: var(--text-3); margin-bottom: 20px; }
.breadcrumb a { color: var(--text-3); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb-sep { color: var(--text-3); }
.breadcrumb-current { color: var(--text-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 300px; }
.article-title { font-size: 36px; font-weight: 700; line-height: 1.3; color: var(--text-1); margin-bottom: 16px; }
.article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px; font-size: 14px; color: var(--text-2); }
.meta-item { display: inline-flex; align-items: center; gap: 6px; }
.meta-cat { background: rgba(43, 95, 168, .1); color: var(--primary); padding: 3px 14px; border-radius: var(--radius-tag); font-size: 13px; font-weight: 500; }

/* ===== Content ===== */
.article-content-section { padding: 56px 0 64px; }
.article-layout { max-width: 860px; margin: 0 auto; }
.article-body {
  background: #fff;
  border-radius: var(--radius-card);
  padding: 48px;
  box-shadow: var(--shadow-1);
  word-break: break-word;
}
.article-body h2 {
  font-size: 26px; font-weight: 700; color: var(--text-1);
  margin: 40px 0 16px; padding-left: 14px; border-left: 4px solid var(--primary);
}
.article-body h3 { font-size: 20px; font-weight: 600; color: var(--text-1); margin: 32px 0 12px; }
.article-body p { margin-bottom: 20px; line-height: 1.8; color: var(--text-1); }
.article-body ul, .article-body ol { margin: 16px 0 24px; padding-left: 26px; }
.article-body li { margin-bottom: 8px; line-height: 1.8; color: var(--text-1); }
.article-body blockquote {
  background: var(--primary-light); border-left: 4px solid var(--primary);
  padding: 16px 20px; border-radius: 0 10px 10px 0;
  margin: 24px 0; color: var(--text-2);
}
.article-body img { max-width: 100%; border-radius: 12px; margin: 24px 0; }
.article-body a { font-weight: 500; }
.article-body a:hover { text-decoration: underline; }
.article-footer-nav {
  display: flex; justify-content: space-between; align-items: center;
  gap: 16px; margin-top: 36px; padding-top: 24px; border-top: 1px solid var(--border);
  flex-wrap: wrap;
}
.back-link { font-size: 14px; color: var(--text-2); }
.back-link:hover { color: var(--primary); }
.next-link { font-size: 14px; color: var(--primary); font-weight: 500; }
.next-link:hover { color: var(--primary-dark); text-decoration: underline; }
.article-not-found { background: #fff; border-radius: var(--radius-card); padding: 64px 32px; box-shadow: var(--shadow-1); text-align: center; }
.not-found-code { font-size: 56px; font-weight: 800; color: var(--primary-light); line-height: 1; }
.not-found-title { font-size: 22px; font-weight: 700; margin: 12px 0 8px; }
.not-found-desc { color: var(--text-2); margin-bottom: 24px; }
.btn-primary {
  display: inline-block; background: var(--primary); color: #fff;
  padding: 12px 28px; border-radius: var(--radius-btn);
  font-size: 15px; font-weight: 600; transition: all .25s;
}
.btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(43, 95, 168, .25); }

/* ===== Related ===== */
.related-section { background: var(--bg-white); padding: 64px 0; }
.section-head { text-align: center; margin-bottom: 40px; }
.section-head h2 { font-size: 28px; font-weight: 700; color: var(--text-1); }
.section-head p { color: var(--text-2); margin-top: 6px; font-size: 15px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card {
  background: var(--bg-white); border-radius: var(--radius-card); overflow: hidden;
  box-shadow: var(--shadow-1); display: block; border: 1px solid var(--border);
  transition: transform .3s, box-shadow .3s;
}
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); }
.related-thumb { height: 180px; overflow: hidden; }
.related-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.related-card:hover .related-thumb img { transform: scale(1.05); }
.related-body { padding: 24px; }
.related-body h3 { font-size: 17px; font-weight: 600; color: var(--text-1); line-height: 1.45; margin-bottom: 8px; transition: color .2s; }
.related-card:hover h3 { color: var(--primary); }
.related-body p { font-size: 14px; color: var(--text-2); line-height: 1.6; margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-time { font-size: 13px; color: var(--text-3); }

/* ===== FAQ ===== */
.faq-section { padding: 64px 0; }
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.faq-item { background: #fff; border-radius: 12px; box-shadow: var(--shadow-1); overflow: hidden; transition: box-shadow .3s; }
.faq-item.open { box-shadow: var(--shadow-2); }
.faq-question {
  width: 100%; text-align: left; padding: 20px 24px;
  font-size: 16px; font-weight: 600; color: var(--text-1);
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  transition: color .2s;
}
.faq-question:hover { color: var(--primary); }
.faq-icon { font-size: 24px; color: var(--primary); font-weight: 400; line-height: 1; transition: transform .3s; flex-shrink: 0; }
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-answer p { padding: 0 24px 20px; color: var(--text-2); font-size: 15px; line-height: 1.7; }

/* ===== CTA ===== */
.cta-section { padding: 56px 0 80px; }
.cta-banner {
  background: var(--primary-light);
  border-radius: var(--radius-card);
  padding: 40px 48px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  border: 1px solid var(--border);
}
.cta-text h2 { font-size: 24px; font-weight: 700; color: var(--text-1); }
.cta-text p { color: var(--text-2); margin-top: 6px; font-size: 15px; }
.btn-cta {
  background: var(--orange); color: #fff; padding: 14px 32px;
  border-radius: var(--radius-btn); font-size: 16px; font-weight: 600;
  display: inline-block; white-space: nowrap;
  transition: background .2s, transform .2s, box-shadow .2s;
}
.btn-cta:hover { background: var(--orange-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 10px 20px rgba(245, 138, 7, .25); }
.btn-block { width: 100%; text-align: center; }

/* ===== Footer ===== */
.site-footer { background: var(--footer-bg); color: var(--footer-text); padding: 56px 0 24px; }
.footer-top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .brand-text { color: #fff; }
.footer-brand .brand-text span { color: var(--primary-light); }
.footer-desc { font-size: 14px; color: var(--footer-text); margin-top: 12px; max-width: 320px; }
.footer-title { font-size: 16px; font-weight: 600; color: #fff; margin-bottom: 16px; }
.footer-links, .footer-contact { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 14px; color: var(--footer-text); }
.footer-links a:hover { color: #fff; }
.footer-contact li { font-size: 14px; }
.footer-contact span { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .1); padding-top: 24px; text-align: center; font-size: 14px; color: rgba(255, 255, 255, .4); }

/* ===== Modal ===== */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(16, 24, 40, .5);
  z-index: 999; display: none; align-items: center; justify-content: center;
  padding: 16px;
}
.modal-overlay.show { display: flex; }
.modal-dialog {
  width: 100%; max-width: 480px; background: #fff; border-radius: 20px;
  padding: 40px; position: relative; box-shadow: var(--shadow-3); margin: 0 16px;
}
.modal-topbar { position: absolute; top: 0; left: 0; right: 0; height: 4px; background: var(--primary); border-radius: 20px 20px 0 0; }
.modal-close {
  position: absolute; right: 16px; top: 16px; font-size: 22px; color: var(--text-3);
  width: 36px; height: 36px; border-radius: 50%; transition: all .2s;
}
.modal-close:hover { color: var(--primary); background: var(--primary-light); }
.modal-header { margin-bottom: 24px; }
.modal-header h3 { font-size: 22px; font-weight: 700; color: var(--text-1); line-height: 1.4; }
.modal-header p { color: var(--text-2); font-size: 14px; margin-top: 6px; }
.modal-form { display: flex; flex-direction: column; gap: 14px; }
.modal-form input, .modal-form select {
  padding: 12px 16px; border-radius: var(--radius-btn);
  background: var(--primary-light); border: 2px solid transparent;
  font-size: 15px; color: var(--text-1); transition: all .25s;
}
.modal-form input:focus, .modal-form select:focus {
  background: #fff; border-color: var(--primary); outline: none;
  box-shadow: 0 0 0 4px rgba(43, 95, 168, .15);
}
.modal-form select option { color: var(--text-1); }
.privacy-note { font-size: 13px; color: var(--text-3); display: flex; align-items: flex-start; gap: 8px; line-height: 1.5; margin-top: 2px; }
.privacy-note input { width: 16px; height: 16px; margin-top: 2px; flex-shrink: 0; }

/* ===== Responsive ===== */
@media (max-width: 991px) {
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .cta-banner { flex-direction: column; text-align: center; padding: 32px 24px; }
  .article-title { font-size: 30px; }
}
@media (max-width: 767px) {
  .container { padding: 0 16px; }
  .header-phone { display: none; }
  .header-top { padding: 12px 0; }
  .brand-text { font-size: 18px; }
  .brand-text span { font-size: 13px; }
  .header-cta { padding: 8px 16px; font-size: 13px; }
  .channel-nav { overflow-x: auto; }
  .channel-list { display: flex; gap: 0; width: max-content; padding: 0; }
  .channel-link { padding: 10px 14px; font-size: 14px; }
  .channel-link.active::after { left: 14px; right: 14px; }
  .article-hero { padding: 40px 0 32px; }
  .article-title { font-size: 26px; line-height: 1.35; }
  .article-meta { font-size: 13px; gap: 8px 16px; }
  .breadcrumb-current { max-width: 180px; }
  .article-content-section { padding: 40px 0 48px; }
  .article-body { padding: 28px 20px; border-radius: 12px; }
  .article-body h2 { font-size: 22px; margin: 32px 0 14px; }
  .article-body h3 { font-size: 18px; }
  .related-section { padding: 48px 0; }
  .section-head h2 { font-size: 24px; }
  .related-grid { grid-template-columns: 1fr; gap: 16px; }
  .related-thumb { height: 160px; }
  .faq-section { padding: 48px 0; }
  .faq-question { padding: 16px 18px; font-size: 15px; }
  .faq-answer p { padding: 0 18px 16px; }
  .cta-section { padding: 40px 0 56px; }
  .cta-banner { padding: 28px 20px; }
  .cta-text h2 { font-size: 20px; }
  .cta-text p { font-size: 14px; }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { font-size: 13px; }
  .modal-dialog { padding: 32px 24px; border-radius: 16px; margin: 0 8px; }
  .modal-header h3 { font-size: 19px; }
}
@media (max-width: 520px) {
  .article-title { font-size: 22px; }
  .header-actions { gap: 8px; }
  .header-cta { padding: 8px 14px; font-size: 12px; }
  .article-footer-nav { flex-direction: column; align-items: flex-start; }
  .related-body { padding: 18px; }
  .related-body h3 { font-size: 16px; }
}

/* roulang page: category2 */
*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #2B5FA8;
            --primary-light: #EEF3FA;
            --success: #12A150;
            --accent: #F58A07;
            --accent-hover: #DD7800;
            --text: #26313D;
            --text-secondary: #5B6B7C;
            --text-muted: #8A98A8;
            --border: #E3EAF1;
            --bg: #F6F8FB;
            --card: #FFFFFF;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-tag: 999px;
            --radius-input: 10px;
            --shadow-card: 0 4px 20px rgba(43, 95, 168, 0.06);
            --shadow-hover: 0 12px 32px rgba(43, 95, 168, 0.12);
            --shadow-modal: 0 24px 64px rgba(15, 30, 50, 0.18);
            --container: 1200px;
            --space: 80px;
            --space-mobile: 48px;
            --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            text-decoration: underline;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
            border: none;
            background: none;
            cursor: pointer;
        }
        input,
        select {
            font-family: inherit;
            font-size: 15px;
            color: var(--text);
            width: 100%;
            padding: 12px 16px;
            border: none;
            border-radius: var(--radius-input);
            background: var(--primary-light);
            transition: all 0.25s ease;
        }
        input:focus,
        select:focus {
            background: #fff;
            border: 2px solid var(--primary);
            outline: none;
            box-shadow: 0 0 0 4px rgba(43, 95, 168, 0.15);
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--accent);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            line-height: 1;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            text-decoration: none;
            transition: all 0.25s ease;
            box-shadow: 0 4px 14px rgba(245, 138, 7, 0.25);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 138, 7, 0.32);
            text-decoration: none;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(245, 138, 7, 0.2);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #fff;
            color: var(--primary);
            font-size: 16px;
            font-weight: 600;
            line-height: 1;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            border: 2px solid var(--primary);
            text-decoration: none;
            transition: all 0.25s ease;
        }
        .btn-secondary:hover {
            background: var(--primary-light);
            color: var(--primary);
            text-decoration: none;
            transform: translateY(-2px);
        }
        .btn-block {
            width: 100%;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            border-radius: var(--radius-tag);
            background: #fff;
            color: var(--primary);
            font-size: 13px;
            font-weight: 500;
            box-shadow: 0 2px 8px rgba(43, 95, 168, 0.08);
        }
        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #fff;
            border-bottom: 1px solid var(--border);
            transition: box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(15, 30, 50, 0.08);
        }
        .header-inner {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0;
            gap: 16px;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }
        .brand:hover {
            text-decoration: none;
        }
        .brand-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: var(--primary);
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.2;
        }
        .brand-text span {
            display: block;
            font-size: 13px;
            font-weight: 400;
            color: var(--text-secondary);
            letter-spacing: 1px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .header-phone {
            font-size: 14px;
            color: var(--text-secondary);
            white-space: nowrap;
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            background: var(--accent);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            text-decoration: none;
            transition: all 0.25s ease;
            box-shadow: 0 2px 10px rgba(245, 138, 7, 0.2);
        }
        .header-cta:hover {
            background: var(--accent-hover);
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
        }
        .channel-nav {
            border-top: 1px solid var(--border);
        }
        .channel-list {
            list-style: none;
            display: flex;
            gap: 28px;
            padding: 0;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            margin: 0;
        }
        .channel-list::-webkit-scrollbar {
            display: none;
        }
        .channel-link {
            display: inline-block;
            padding: 14px 2px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            text-decoration: none;
            border-bottom: 3px solid transparent;
            transition: all 0.25s ease;
            white-space: nowrap;
            position: relative;
        }
        .channel-link:hover {
            color: var(--primary);
            text-decoration: none;
            background: var(--primary-light);
            border-radius: 8px 8px 0 0;
            padding-left: 12px;
            padding-right: 12px;
        }
        .channel-link.active {
            color: var(--primary);
            font-weight: 600;
            border-bottom-color: var(--primary);
            background: var(--primary-light);
            border-radius: 8px 8px 0 0;
            padding-left: 12px;
            padding-right: 12px;
        }
        /* Hero */
        .category-hero {
            background: var(--primary-light);
            padding: 64px 0;
            margin-bottom: var(--space-mobile);
            border-bottom: 1px solid var(--border);
        }
        .category-hero-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 48px;
            align-items: center;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            border-radius: var(--radius-tag);
            background: var(--primary);
            color: #fff;
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .category-hero h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 12px;
        }
        .category-hero p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 540px;
            line-height: 1.8;
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 24px;
        }
        .hero-tags .tag {
            background: #fff;
            border: 1px solid var(--border);
            box-shadow: none;
        }
        .category-hero-image img {
            width: 100%;
            height: 280px;
            object-fit: cover;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-hover);
        }
        /* Content Grid */
        .category-content {
            padding: var(--space) 0;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 32px;
            align-items: start;
        }
        .content-main h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            position: relative;
            padding-left: 18px;
        }
        .content-main h2::before {
            content: "";
            position: absolute;
            left: 0;
            top: 4px;
            bottom: 4px;
            width: 4px;
            background: var(--primary);
            border-radius: 4px;
        }
        .content-main .section-sub {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 28px;
            padding-left: 18px;
        }
        .content-card-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .content-card {
            display: flex;
            gap: 24px;
            background: var(--card);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            border-top: 3px solid var(--primary);
        }
        .content-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .content-card img {
            width: 140px;
            height: 140px;
            object-fit: cover;
            border-radius: 12px;
            flex-shrink: 0;
        }
        .content-card .card-body {
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .content-card .card-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-tag);
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 500;
            align-self: flex-start;
            margin-bottom: 8px;
        }
        .content-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .content-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
        }
        .content-card .card-meta {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 8px;
        }
        /* Sidebar */
        .content-sidebar {
            display: flex;
            flex-direction: column;
            gap: 20px;
            position: sticky;
            top: 140px;
        }
        .sidebar-card {
            background: var(--card);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
        }
        .sidebar-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 14px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border);
        }
        .sidebar-card ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .sidebar-card ul li a {
            display: block;
            padding: 8px 10px;
            border-radius: 8px;
            color: var(--text-secondary);
            font-size: 14px;
            transition: all 0.2s ease;
        }
        .sidebar-card ul li a:hover {
            background: var(--primary-light);
            color: var(--primary);
            text-decoration: none;
            padding-left: 14px;
        }
        .sidebar-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 16px;
            line-height: 1.6;
        }
        .sidebar-card .btn-primary {
            width: 100%;
        }
        /* FAQ */
        .faq-section {
            padding: var(--space) 0;
            background: #fff;
        }
        .faq-section .container {
            max-width: 880px;
        }
        .faq-section h2 {
            font-size: 28px;
            font-weight: 700;
            text-align: center;
            margin-bottom: 8px;
        }
        .faq-section .section-sub {
            text-align: center;
            color: var(--text-secondary);
            font-size: 15px;
            margin-bottom: 32px;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--card);
            border-radius: 12px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: box-shadow 0.3s ease;
        }
        .faq-item.active {
            box-shadow: var(--shadow-hover);
            border-color: rgba(43, 95, 168, 0.25);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            background: none;
            transition: background 0.25s ease;
        }
        .faq-question:hover {
            background: var(--primary-light);
        }
        .faq-icon {
            position: relative;
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            margin-left: 16px;
            border-radius: 50%;
            background: var(--primary-light);
            transition: all 0.3s ease;
        }
        .faq-icon::before,
        .faq-icon::after {
            content: "";
            position: absolute;
            background: var(--primary);
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            transition: transform 0.3s ease;
        }
        .faq-icon::before {
            width: 10px;
            height: 2px;
        }
        .faq-icon::after {
            width: 2px;
            height: 10px;
        }
        .faq-item.active .faq-icon {
            background: var(--primary);
            transform: rotate(45deg);
        }
        .faq-item.active .faq-icon::before,
        .faq-item.active .faq-icon::after {
            background: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        /* CTA Banner */
        .cta-banner {
            padding: var(--space) 0;
            background: var(--primary-light);
        }
        .cta-inner {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            box-shadow: var(--shadow-card);
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            overflow: hidden;
        }
        .cta-inner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(255, 255, 255, 0.95) 40%, rgba(255, 255, 255, 0.75));
        }
        .cta-text {
            position: relative;
            z-index: 1;
            flex: 1;
        }
        .cta-text h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }
        .cta-text p {
            font-size: 15px;
            color: var(--text-secondary);
        }
        .cta-inner .btn-primary {
            position: relative;
            z-index: 1;
            flex-shrink: 0;
        }
        /* Footer */
        .site-footer {
            background: #10233B;
            color: #A9B8C8;
            padding: 64px 0 24px;
        }
        .site-footer .brand-text {
            color: #fff;
        }
        .site-footer .brand-text span {
            color: #8FA8C8;
        }
        .brand-icon {
            background: var(--primary);
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 1fr 0.9fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            margin-top: 16px;
            color: #8FA8C8;
            max-width: 280px;
        }
        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
            padding: 0;
            margin: 0;
        }
        .footer-links a {
            color: #A9B8C8;
            font-size: 14px;
            transition: color 0.2s ease;
        }
        .footer-links a:hover {
            color: #fff;
            text-decoration: none;
        }
        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-contact li {
            font-size: 14px;
            color: #A9B8C8;
        }
        .footer-contact li span {
            color: #8FA8C8;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            text-align: center;
            font-size: 13px;
            color: #6B8298;
        }
        /* Modal */
        .modal-overlay {
            position: fixed;
            inset: 0;
            background: rgba(16, 24, 40, 0.5);
            z-index: 1000;
            display: none;
            align-items: center;
            justify-content: center;
            backdrop-filter: blur(4px);
        }
        .modal-overlay.active {
            display: flex;
        }
        .modal-card {
            background: #fff;
            border-radius: 20px;
            max-width: 480px;
            width: calc(100% - 32px);
            padding: 36px 32px 32px;
            position: relative;
            box-shadow: var(--shadow-modal);
            animation: modalIn 0.3s ease;
        }
        @keyframes modalIn {
            from {
                opacity: 0;
                transform: translateY(20px) scale(0.96);
            }
            to {
                opacity: 1;
                transform: translateY(0) scale(1);
            }
        }
        .modal-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--primary);
            border-radius: 20px 20px 0 0;
        }
        .modal-close {
            position: absolute;
            top: 16px;
            right: 16px;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--text-secondary);
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s ease;
        }
        .modal-close:hover {
            background: var(--primary);
            color: #fff;
        }
        .modal-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 24px;
            line-height: 1.4;
        }
        .modal-card form {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .modal-card select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238A98A8' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
        }
        .privacy-note {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
            text-align: center;
            padding: 0 8px;
        }
        /* Responsive */
        @media (max-width: 992px) {
            .category-hero-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .category-hero-image img {
                height: 220px;
            }
            .content-grid {
                grid-template-columns: 1fr;
            }
            .content-sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
            }
            .sidebar-card {
                flex: 1;
                min-width: 240px;
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .header-inner {
                padding: 0 16px;
            }
            .header-phone {
                display: none;
            }
            .header-top {
                padding: 12px 0;
            }
            .brand-icon {
                width: 36px;
                height: 36px;
                font-size: 17px;
                border-radius: 10px;
            }
            .brand-text {
                font-size: 17px;
            }
            .brand-text span {
                font-size: 11px;
            }
            .header-cta {
                padding: 8px 16px;
                font-size: 13px;
            }
            .channel-list {
                gap: 16px;
            }
            .channel-link {
                padding: 12px 2px;
                font-size: 14px;
            }
            .category-hero {
                padding: 40px 0;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .category-hero p {
                font-size: 15px;
            }
            .category-hero-image img {
                height: 180px;
            }
            .category-content {
                padding: var(--space-mobile) 0;
            }
            .content-card {
                flex-direction: column;
                gap: 12px;
                padding: 20px;
            }
            .content-card img {
                width: 100%;
                height: 180px;
            }
            .faq-section {
                padding: var(--space-mobile) 0;
            }
            .faq-section h2 {
                font-size: 24px;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 0 18px;
            }
            .faq-item.active .faq-answer {
                padding: 0 18px 16px;
            }
            .cta-banner {
                padding: var(--space-mobile) 0;
            }
            .cta-inner {
                flex-direction: column;
                text-align: center;
                padding: 32px 24px;
                background-image: none;
            }
            .cta-inner::before {
                display: none;
            }
            .cta-text h2 {
                font-size: 22px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: auto;
            }
            .footer-bottom {
                font-size: 12px;
            }
            .modal-card {
                padding: 28px 20px 24px;
                border-radius: 16px;
            }
            .modal-card h3 {
                font-size: 18px;
                margin-bottom: 18px;
            }
        }
        @media (max-width: 520px) {
            .header-top {
                gap: 8px;
            }
            .brand-text span {
                display: none;
            }
            .header-cta {
                padding: 8px 14px;
                font-size: 12px;
            }
            .hero-tags {
                gap: 6px;
            }
            .hero-tags .tag {
                font-size: 12px;
                padding: 4px 12px;
            }
            .content-card img {
                height: 140px;
            }
            .sidebar-card {
                min-width: 100%;
            }
            .faq-section .section-sub {
                font-size: 14px;
            }
            .faq-question {
                font-size: 14px;
            }
        }