/* roulang page: index */
/* ===== 设计变量 ===== */
    :root {
        --color-page: #F5F8FC;
        --color-surface: #FFFFFF;
        --color-primary: #285DC4;
        --color-primary-deep: #1D4290;
        --color-primary-soft: #E8F0FB;
        --color-accent: #F2B35C;
        --color-text: #1B2733;
        --color-text-secondary: #556575;
        --color-muted: #8596A8;
        --color-line: #DCE6EF;
        --color-success: #2F9B7A;
        --color-bg-soft: #EEF3F9;
        --font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", sans-serif;
        --shadow-card: 0 4px 20px rgba(29, 66, 130, 0.06);
        --shadow-hover: 0 10px 30px rgba(29, 66, 130, 0.10);
        --radius-card: 16px;
        --radius-btn: 12px;
        --radius-tag: 999px;
    }

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

    body {
        font-family: var(--font-family);
        background: var(--color-page);
        color: var(--color-text);
        font-size: 16px;
        line-height: 1.75;
        -webkit-font-smoothing: antialiased;
    }

    html {
        scroll-behavior: smooth;
    }

    a {
        color: var(--color-primary);
        text-decoration: none;
        transition: color .25s ease, opacity .25s ease;
    }

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

    img {
        max-width: 100%;
    }

    p, h1, h2, h3, h4, h5, h6 {
        margin: 0;
    }

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

    .text-secondary-color { color: var(--color-text-secondary); }
    .text-muted-color { color: var(--color-muted); }

    /* 通用 btn 覆写 */
    .btn {
        border-radius: var(--radius-btn);
        font-weight: 600;
        transition: background-color .3s ease, color .3s ease, border-color .3s, transform .2s, box-shadow .2s;
        min-height: 46px;
        padding-left: 24px;
        padding-right: 24px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
    }

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

    .btn-primary-custom:hover {
        background: var(--color-primary-deep);
        border-color: var(--color-primary-deep);
        color: #fff;
        transform: translateY(-1px);
        box-shadow: 0 6px 18px rgba(40, 93, 196, 0.22);
    }

    .btn-outline-custom {
        background: #fff;
        border: 1.5px solid var(--color-primary);
        color: var(--color-primary);
    }

    .btn-outline-custom:hover {
        background: var(--color-primary-soft);
        border-color: var(--color-primary);
        color: var(--color-primary-deep);
        transform: translateY(-1px);
    }

    .btn-link-custom {
        background: transparent;
        color: var(--color-primary);
        border: 0;
        padding-left: 4px;
        padding-right: 4px;
        font-weight: 500;
    }
    
    .btn-lg {
        min-height: 54px;
        padding: 0 28px;
        font-size: 1rem;
    }

    .btn:focus, .form-control:focus {
        outline: none;
        box-shadow: 0 0 0 3px rgba(40, 93, 196, 0.15);
        border-color: var(--color-primary);
    }

    /* ===== 通用 Badge / 标签 ===== */
    .tag-badge {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: var(--color-primary-soft);
        color: var(--color-primary);
        border-radius: var(--radius-tag);
        padding: 5px 14px;
        font-size: 13px;
        font-weight: 600;
        line-height: 1.5;
    }

    .status-badge {
        display: inline-flex;
        align-items: center;
        font-size: 13px;
        color: var(--color-text-secondary);
        gap: 6px;
    }

    .status-badge i {
        color: var(--color-success);
        font-size: 8px;
        vertical-align: middle;
    }

    .badge {
        font-weight: 500;
        letter-spacing: .2px;
    }

    /* ===== 顶部导航 Header ===== */
    .site-header {
        background: var(--color-surface);
        border-bottom: 1px solid var(--color-line);
        position: sticky;
        top: 0;
        width: 100%;
        z-index: 1050;
        box-shadow: 0 1px 6px rgba(27, 39, 51, 0.03);
    }

    .navbar-main {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 20px;
        padding: 16px 0;
        flex-wrap: nowrap;
    }

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

    .logo-icon {
        width: 42px;
        height: 42px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: linear-gradient(135deg, #285Dc4, #1D4290);
        border-radius: 50%;
        color: #fff;
        font-size: 1.25rem;
        box-shadow: 0 4px 12px rgba(29, 66, 144, 0.18);
    }

    .logo-text {
        font-size: 1.35rem;
        font-weight: 800;
        letter-spacing: .2px;
        color: var(--color-text);
        line-height: 1.2;
        display: flex;
        flex-direction: column;
        gap: 0;
    }

    .logo-sub {
        font-size: 0.7rem;
        font-weight: 400;
        color: var(--color-muted);
        letter-spacing: .5px;
    }
    
    /* 搜索主导航 */
    .nav-search-box {
        flex: 1 1 auto;
        max-width: 620px;
        min-width: 300px;
        display: flex;
        align-items: center;
        background: white;
        border: 1px solid var(--color-line);
        border-radius: 50px;
        padding: 5px 6px 5px 18px;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
        transition: box-shadow .3s, border-color .3s;
        height: 52px;
    }

    .nav-search-box:focus-within {
        border-color: var(--color-primary);
        box-shadow: 0 0 0 4px rgba(40, 93, 196, 0.08);
    }

    .nav-search-box i {
        color: var(--color-muted);
        font-size: 1.1rem;
        margin-right: 10px;
    }

    .nav-search-box input {
        border: none;
        background: transparent;
        flex: 1;
        outline: none;
        color: var(--color-text);
        font-size: 15px;
    }

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

    .nav-search-btn {
        background: var(--color-primary);
        color: #fff;
        border: none;
        padding: 8px 22px;
        border-radius: 40px;
        font-weight: 600;
        font-size: 14px;
        white-space: nowrap;
        transition: background-color .3s;
        height: 40px;
        line-height: 1;
    }

    .nav-search-btn:hover {
        background: var(--color-primary-deep);
    }

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

    .nav-actions .btn-login-top {
        background: var(--color-primary);
        color: #fff;
        border-radius: 50px;
        padding: 0 22px;
        height: 44px;
        line-height: 44px;
        font-size: 14px;
        font-weight: 600;
        display: inline-flex;
        align-items: center;
        gap: 8px;
        border: none;
        transition: background .3s ease, transform .2s ease;
    }

    .nav-actions .btn-login-top:hover {
        background: var(--color-primary-deep);
        transform: translateY(-1px);
    }

    .nav-actions .link-consult {
        font-size: 14px;
        color: var(--color-text-secondary);
    }

    .nav-actions .link-consult:hover {
        color: var(--color-primary);
    }

    /* 分类导航行 */
    .category-nav-row {
        background: var(--color-surface);
        border-top: 1px solid #f0f2f5;
        border-bottom: 1px solid var(--color-line);
    }

    .category-nav {
        display: flex;
        align-items: center;
        gap: 28px;
        overflow-x: auto;
        scrollbar-width: none;
        padding: 8px 0;
        flex-wrap: nowrap;
    }

    .category-nav::-webkit-scrollbar {
        display: none;
    }

    .category-nav .nav-item-link {
        font-size: 15px;
        font-weight: 500;
        color: var(--color-text);
        padding: 10px 0 8px;
        border-bottom: 2px solid transparent;
        display: inline-flex;
        align-items: center;
        gap: 6px;
        white-space: nowrap;
    }

    .category-nav .nav-item-link:hover {
        color: var(--color-primary);
    }

    .category-nav .nav-item-link.active {
        color: var(--color-primary);
        border-bottom-color: var(--color-primary);
        font-weight: 600;
    }

    .category-nav .nav-link-highlight {
        margin-left: auto;
        background: var(--color-accent);
        color: #1B2733;
        border-radius: 40px;
        padding: 8px 22px;
        font-size: 14px;
        font-weight: 600;
        white-space: nowrap;
        border: none;
    }

    .category-nav .nav-link-highlight:hover {
        background: #fdd49409;
        background-color: #f0b455;
        color: var(--color-text);
    }

    /* 移动端搜索按钮 */
    .mobile-search-toggle {
        display: none;
        background: transparent;
        border: none;
        color: var(--color-text);
        font-size: 20px;
        line-height: 1;
        padding: 6px 8px;
    }

    .mobile-nav-toggle {
        display: none;
        background: transparent;
        border: none;
        color: var(--color-text);
        font-size: 22px;
    }

    /* 移动搜索详展面板 */
    .mobile-search-expand {
        display: none;
        background: var(--color-surface);
        padding: 14px 24px 18px;
        border-bottom: 1px solid var(--color-line);
    }

    .mobile-search-expand.open {
        display: block;
    }

    .mobile-search-expand .mobile-search-box {
        width: 100%;
        display: flex;
        background: #fff;
        border: 1px solid var(--color-line);
        border-radius: 40px;
        padding: 4px 4px 4px 16px;
        align-items: center;
        height: 48px;
    }

    .mobile-search-box input {
        border: none;
        background: transparent;
        flex: 1;
        outline: none;
        padding: 0 6px;
    }

    .mobile-search-box button {
        background: var(--color-primary);
        color: #fff;
        border: none;
        border-radius: 40px;
        padding: 8px 20px;
        font-size: 14px;
        white-space: nowrap;
    }

    /* ===== Hero 区域 ===== */
    .hero-section {
        background-color: #EFF4FA;
        background-image: url('/assets/images/backpic/back-1.png');
        background-size: cover;
        background-position: center center;
        background-repeat: no-repeat;
        padding: 80px 0 70px;
        position: relative;
        overflow: hidden;
    }

    .hero-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(90deg, rgba(255, 255, 255, 0.83) 0%, rgba(238, 244, 252, 0.57) 70%, rgba(218, 232, 246, 0.48) 100%);
        pointer-events: none;
    }

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

    .hero-content {
        max-width: 650px;
    }

    .hero-badge-line {
        display: inline-flex;
        align-items: center;
        background: rgba(40, 93, 196, 0.08);
        border-radius: 100px;
        padding: 8px 18px;
        font-size: 13px;
        font-weight: 600;
        color: var(--color-primary);
        border: 1px solid rgba(40, 93, 196, 0.1);
        gap: 8px;
        margin-bottom: 20px;
    }

    .hero-title {
        font-size: clamp(2.4rem, 4.4vw, 3.6rem);
        font-weight: 800;
        line-height: 1.22;
        letter-spacing: .5px;
        color: var(--color-text);
        background: linear-gradient(120deg, #1D4290, #3e7ae8);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        margin-bottom: 18px;
        padding-bottom: 10px;
    }

    .hero-subtitle {
        color: #3b4e64;
        font-size: 1.1rem;
        line-height: 1.9;
        margin-bottom: 32px;
        max-width: 560px;
    }

    .hero-actions {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 16px;
        margin-bottom: 24px;
    }

    .hero-trustline {
        display: flex;
        flex-wrap: wrap;
        gap: 24px;
        color: #6d7d90;
        font-size: 13px;
    }

    .hero-trustline i {
        color: var(--color-success);
        margin-right: 6px;
    }

    /* Hero 登录面板 */
    .hero-login-card {
        background: var(--color-surface);
        border: 1px solid rgba(220, 230, 239, 0.8);
        border-radius: 24px;
        box-shadow: 0 16px 40px rgba(29, 66, 144, 0.08);
        padding: 32px 28px;
        width: 100%;
        max-width: 400px;
        margin-left: auto;
        position: relative;
    }

    .hero-login-card .login-panel-badge {
        position: absolute;
        top: -14px;
        right: 24px;
        background: var(--color-accent);
        color: #4d3d1e;
        font-size: 12px;
        font-weight: 600;
        padding: 6px 16px;
        border-radius: 40px;
        display: flex;
        align-items: center;
        gap: 6px;
        box-shadow: 0 4px 10px rgba(0,0,0,0.04);
    }

    .hero-login-card h3 {
        font-size: 1.3rem;
        font-weight: 700;
        margin-bottom: 2px;
    }

    .hero-login-card .login-subtitle {
        font-size: 13px;
        color: var(--color-muted);
        margin-bottom: 24px;
    }

    .hero-login-card .form-control {
        border-radius: 12px !important;
        min-height: 48px;
        border: 1px solid var(--color-line);
        padding-left: 42px;
        font-size: 15px;
        background: #f8fbff;
    }

    .hero-login-card .form-control:focus {
        background: #fff;
        border-color: var(--color-primary);
    }

    .hero-login-card .form-group {
        position: relative;
        margin-bottom: 14px;
    }

    .hero-login-card .form-group .form-icon {
        position: absolute;
        left: 15px;
        top: 50%;
        transform: translateY(-50%);
        color: var(--color-muted);
        font-size: 1rem;
    }

    .hero-login-card .btn-login-submit {
        width: 100%;
        background: var(--color-primary);
        border: none;
        border-radius: 12px;
        color: #fff;
        font-weight: 600;
        min-height: 48px;
        font-size: 16px;
        margin-top: 8px;
        transition: background .3s, transform .2s;
    }

    .hero-login-card .btn-login-submit:hover {
        background: var(--color-primary-deep);
        transform: translateY(-1px);
    }

    .login-card-links {
        display: flex;
        justify-content: space-between;
        margin-top: 16px;
        font-size: 13px;
    }

    .login-card-links a {
        color: var(--color-text-secondary);
    }

    .login-card-links a:hover {
        color: var(--color-primary);
    }

    .login-card-tip {
        background: #f0f5fa;
        border-radius: 10px;
        padding: 10px 14px;
        font-size: 12px;
        line-height: 1.6;
        color: #5b6e82;
        display: flex;
        gap: 8px;
        margin-top: 16px;
    }

    .login-card-tip i {
        color: var(--color-accent);
        margin-top: 2px;
    }

    /* ===== SEO / 介绍区 ===== */
    .intro-info-section {
        padding: 70px 0 30px;
        background: var(--color-page);
    }

    .info-panel {
        background: #fff;
        border-radius: var(--radius-card);
        padding: 36px;
        border: 1px solid var(--color-line);
        box-shadow: var(--shadow-card);
    }

    .info-panel h2 {
        font-size: 1.4rem;
        font-weight: 700;
        margin-bottom: 14px;
    }

    .info-panel p {
        color: var(--color-text-secondary);
        font-size: 0.98rem;
        line-height: 1.9;
        margin-bottom: 8px;
    }

    .info-tag-list {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin-top: 20px;
    }

    /* ===== 服务入口 ===== */
    .services-section {
        padding: clamp(64px, 8vw, 110px) 0;
        background: var(--color-page);
    }

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

    .section-head h2 {
        font-size: clamp(1.6rem, 3vw, 2.2rem);
        font-weight: 700;
        line-height: 1.4;
        margin-bottom: 8px;
    }

    .section-head .section-subtitle {
        color: var(--color-text-secondary);
        font-size: 1rem;
    }

    .section-more-link {
        color: var(--color-primary);
        font-weight: 500;
        white-space: nowrap;
    }

    /* 左侧主服务卡片 */
    .service-grid-2x3 {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .service-card {
        background: var(--color-surface);
        border: 1px solid var(--color-line);
        border-radius: 18px;
        padding: 28px 22px 22px;
        box-shadow: var(--shadow-card);
        transition: box-shadow .3s ease, transform .3s ease, border-color .3s;
        height: 100%;
    }

    .service-card:hover {
        box-shadow: var(--shadow-hover);
        transform: translateY(-3px);
        border-color: #c7d9ea;
    }

    .service-icon {
        width: 50px;
        height: 50px;
        background: var(--color-primary-soft);
        border-radius: 14px;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 18px;
        color: var(--color-primary);
        font-size: 1.25rem;
    }

    .service-icon.accent-icon {
        background: rgba(242, 179, 92, 0.18);
        color: #c7823d;
    }

    .service-card h4 {
        font-size: 17px;
        font-weight: 700;
        margin-bottom: 8px;
    }

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

    .service-card .service-link {
        font-size: 14px;
        font-weight: 500;
    }

    .service-card .service-link i {
        font-size: 13px;
        transition: transform .2s ease;
    }

    .service-card .service-link:hover i {
        transform: translateX(4px);
    }

    /* 右侧引导卡片 */
    .service-guide-card {
        background: #F8F1E7;
        border: 1px solid #F2E2CF;
        border-radius: 18px;
        padding: 28px;
        height: 100%;
        display: flex;
        flex-direction: column;
    }

    .service-guide-card .guide-icon {
        font-size: 1.6rem;
        margin-bottom: 14px;
        color: #D58026;
    }

    .service-guide-card h4 {
        font-weight: 700;
        margin-bottom: 12px;
    }

    .service-guide-card p {
        font-size: 14px;
        color: #666;
        margin-bottom: 18px;
    }

    .service-guide-card .btn-contact {
        background: #FFFFFF;
        border: 1px solid #E9D5B8;
        color: #B0701C;
        border-radius: 10px;
        padding: 12px 20px;
        transition: all .3s;
        font-weight: 500;
    }

    .service-guide-card .btn-contact:hover {
        background: #fff;
        border-color: #cf9c52;
        color: #6e4c17;
    }

    .service-guide-card .guide-hours {
        margin-top: 16px;
        font-size: 12px;
        color: #999;
        gap: 6px;
    }

    .service-guide-card .separator {
        height: 1px;
        background: #Efdcc2;
        margin: 16px 0;
    }

    /* ===== 数据与优势区 ===== */
    .stats-section {
        background: transparent;
        padding-bottom: clamp(64px, 8vw, 100px);
    }

    .stats-panel {
        background: var(--color-primary-soft);
        border-radius: 24px;
        padding: 50px 48px;
        border: 1px solid rgba(40, 93, 196, 0.06);
    }

    .stats-panel h2 {
        text-align: center;
        font-weight: 700;
        font-size: 1.7rem;
        color: #163467;
    }

    .stats-panel .stats-subtitle {
        text-align: center;
        color: #5a7399;
        margin-bottom: 40px;
    }

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

    .stat-item .stat-star {
        color: var(--color-accent);
        margin-bottom: 8px;
        font-size: 1.1rem;
    }

    .stat-item .stat-number {
        font-size: 2.6rem;
        font-weight: 800;
        color: #152a58;
        line-height: 1.3;
    }

    .stat-item .stat-label {
        color: #64748c;
        font-size: 13px;
        margin-top: 4px;
    }

    /* ===== CMS 动态区块 ===== */
    .news-section {
        background: var(--color-surface);
        padding: clamp(64px, 8vw, 90px) 0;
    }

    .news-grid {
        display: grid;
        grid-template-columns: 1.1fr 1.2fr;
        gap: 24px;
    }

    .news-featured-card {
        background: var(--color-page);
        border-radius: 18px;
        overflow: hidden;
        border: 1px solid var(--color-line);
        position: relative;
    }

    .news-featured-card img {
        width: 100%;
        height: 200px;
        object-fit: cover;
        background: #dbe4f0;
    }

    .news-featured-card .featured-content {
        padding: 28px 24px 24px;
    }

    .news-featured-card .featured-content h3 {
        font-size: 1.2rem;
        font-weight: 700;
        margin: 12px 0 10px;
        line-height: 1.5;
    }

    .news-featured-card .featured-content p {
        color: var(--color-text-secondary);
        font-size: 14px;
        display: -webkit-box;
        -webkit-line-clamp: 3;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

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

    .news-list-top {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 16px;
        flex: 1;
    }

    .news-card-sm {
        background: var(--color-page);
        border-radius: 16px;
        overflow: hidden;
        border: 1px solid var(--color-line);
        padding-bottom: 6px;
    }

    .news-card-sm img {
        width: 100%;
        height: 110px;
        object-fit: cover;
    }

    .news-card-sm .news-card-content {
        padding: 16px;
    }

    .news-card-sm .news-card-content h4 {
        font-size: 15px;
        font-weight: 600;
        line-height: 1.55;
        margin-bottom: 6px;
    }

    .news-card-sm .news-card-content .news-date {
        font-size: 12px;
        color: var(--color-muted);
    }

    .news-list-bottom {
        background: var(--color-page);
        border-radius: 16px;
        border: 1px solid var(--color-line);
        padding: 8px 20px;
    }

    .news-text-item {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 12px 0;
        border-bottom: 1px solid #e3eaf0;
    }

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

    .news-text-item a {
        font-size: 15px;
        color: var(--color-text);
        overflow: hidden;
        white-space: nowrap;
        text-overflow: ellipsis;
    }

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

    .news-text-item .news-cat {
        background: var(--color-primary-soft);
        color: var(--color-primary);
        border-radius: 40px;
        padding: 3px 10px;
        font-size: 12px;
        margin-left: 12px;
        flex-shrink: 0;
    }

    .news-text-item .news-date {
        color: var(--color-muted);
        font-size: 13px;
        flex-shrink: 0;
        margin-left: 16px;
    }

    /* ===== 案例/社会认同 ===== */
    .testimonial-section {
        padding: clamp(64px, 8vw, 90px) 0;
        background: var(--color-page);
    }

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

    .testimonial-card {
        background: #fff;
        border: 1px solid var(--color-line);
        border-radius: 20px;
        padding: 28px;
        box-shadow: var(--shadow-card);
        transition: all .3s;
    }

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

    .testimonial-card .quote-icon {
        color: var(--color-primary-soft);
        font-size: 2.2rem;
        line-height: 0;
        margin-top: 20px;
    }

    .testimonial-card .quote-text {
        color: var(--color-text-secondary);
        font-size: 15px;
        margin: 10px 0 18px;
        min-height: 100px;
    }

    .testimonial-card .person {
        display: flex;
        align-items: center;
        gap: 12px;
        border-top: 1px solid rgba(0,0,0,0.05);
        padding-top: 16px;
    }

    .testimonial-card .person-avatar {
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: #E3E9F1;
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-size: 14px;
        font-weight: 700;
    }

    .testimonial-card .person-meta {
        font-size: 13px;
        color: var(--color-muted);
        line-height: 1.3;
    }

    .testimonial-card .person-meta strong {
        display: block;
        color: var(--color-text);
        font-size: 14px;
        margin-bottom: 2px;
    }

    /* ===== 使用流程 ===== */
    .steps-section {
        background: #fff;
        padding: clamp(64px, 8vw, 100px) 0;
    }

    .steps-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 28px;
        margin-top: 36px;
    }

    .step-item {
        text-align: center;
        position: relative;
        padding: 20px 10px;
    }

    .step-circle {
        width: 72px;
        height: 72px;
        background: var(--color-surface);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--color-primary);
        font-size: 1.5rem;
        font-weight: 700;
        border: 2px solid var(--color-primary);
        margin: 0 auto 18px;
        position: relative;
        z-index: 1;
    }

    .step-item.active .step-circle {
        background: var(--color-primary);
        color: #fff;
    }

    .step-item h4 {
        font-weight: 600;
        margin-bottom: 10px;
    }

    .step-item p {
        font-size: 14px;
        color: var(--color-muted);
        max-width: 260px;
        margin: 0 auto;
        line-height: 1.7;
    }

    /* ===== FAQ ===== */
    .faq-section {
        background: var(--color-page);
        padding: clamp(64px, 8vw, 100px) 0;
    }

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

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

    .faq-item {
        border-bottom: 1px solid #dee8f0;
    }

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

    .faq-question {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 28px 8px 28px 0;
        cursor: pointer;
        gap: 24px;
    }

    .faq-question h3 {
        font-size: 17px;
        font-weight: 600;
        color: #1d2b3c;
        margin: 0;
    }

    .faq-question .faq-icon {
        width: 30px;
        height: 30px;
        border-radius: 50%;
        border: 1px solid var(--color-line);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 18px;
        color: var(--color-muted);
        transition: transform .4s ease, background .3s, border-color .3s;
        flex-shrink: 0;
    }

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

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height .38s ease;
    }

    .faq-answer-inner {
        padding-right: 60px;
        padding-bottom: 24px;
        color: var(--color-text-secondary);
        font-size: 15px;
        line-height: 1.8;
    }

    .faq-item.active .faq-answer {
        max-height: 800px;
    }

    .faq-more-link {
        text-align: center;
        margin-top: 30px;
        font-size: 14px;
        color: var(--color-muted);
    }

    /* ===== CTA 联系我们 ===== */
    .contact-cta-section {
        background: #fff;
        padding: clamp(64px, 8vw, 90px) 0;
    }

    .contact-panel {
        background: #F5F9FF;
        border: 1px solid #dce6f5;
        border-radius: 24px;
        overflow: hidden;
    }

    .contact-info-side {
        padding: 48px 40px;
        background: linear-gradient(145deg, #EAF1FA, #F7FAFF);
        height: 100%;
        display: flex;
        flex-direction: column;
    }

    .contact-info-side h3 {
        font-weight: 700;
        margin-bottom: 16px;
        color: #163467;
    }

    .contact-info-side p {
        color: var(--color-text-secondary);
        font-size: 14.5px;
    }

    .contact-list-items {
        list-style: none;
        padding: 0;
        margin: 28px 0 0;
    }

    .contact-list-items li {
        display: flex;
        gap: 14px;
        margin-bottom: 20px;
        align-items: flex-start;
    }

    .contact-list-items li .contact-ic {
        width: 36px;
        height: 36px;
        background: var(--color-primary);
        padding: 0;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-size: 0.85rem;
        flex-shrink: 0;
    }

    .contact-list-items li strong {
        display: block;
        font-size: 15px;
    }

    .contact-list-items li span {
        font-size: 14 px;
        color: var(--color-muted);
    }

    .contact-form-side {
        padding: 48px 40px;
    }

    .contact-form-side h3 {
        font-weight: 700;
        margin-bottom: 8px;
    }

    .contact-form-side .form-label {
        font-size: 14px;
        font-weight: 500;
    }

    .contact-form-side .form-control {
        background: #fff;
        border: 1px solid var(--color-line);
        border-radius: 12px !important;
        min-height: 46px;
        font-size: 15px;
    }

    .contact-form-side .btn-submit {
        background: var(--color-primary);
        width: 100%;
        border: none;
        border-radius: 12px;
        padding: 12px 24px;
        font-weight: 600;
        color: #fff;
        font-size: 16px;
        transition: background .3s, transform .2s;
    }

    .contact-form-side .btn-submit:hover {
        background: var(--color-primary-deep);
    }

    .contact-privacy {
        font-size: 13px;
        color: var(--color-muted);
        text-align: center;
        margin-top: 16px;
    }

    .contact-privacy a {
        color: var(--color-muted);
        text-decoration: underline;
    }

    /* ===== 页面底部 ===== */
    .site-footer {
        background: #ECF2F8;
        border-top: 1px solid #dde5f0;
        padding: 70px 0 0;
    }

    .footer-top {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1.4fr;
        gap: 40px;
        padding-bottom: 40px;
    }

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

    .footer-brand p {
        font-size: 14px;
        color: #66717f;
        max-width: 340px;
    }

    .footer-col h5 {
        font-size: 14px;
        font-weight: 600;
        margin-bottom: 18px;
        letter-spacing: .5px;
    }

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

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

    .footer-col a {
        color: #4e5b6c;
        font-size: 14px;
    }

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

    .footer-bottom-bordered {
        border-top: 1px solid #dbe2ea;
        padding: 20px 0;
        text-align: center;
        font-size: 13px;
        color: #718096;
    }

    /* ===== 分类页用区块 ===== */
    .category-card-block {
        border-bottom: 1px solid var(--color-line);
    }

    /* ===== 响应式 ===== */
    @media (max-width: 992px) {
        .navbar-main {
            flex-wrap: wrap;
        }

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

        .service-guide-card {
            margin-top: 24px;
        }

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

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

    @media (max-width: 768px) {
        .service-grid-2x3 {
            gap: 16px;
        }

        .nav-search-box {
            display: none;
        }

        .mobile-search-toggle {
            display: block;
        }

        .mobile-nav-toggle {
            display: block;
        }

        .nav-actions .btn-login-top {
            padding: 0 16px;
            font-size: 13px;
        }

        .category-nav {
            gap: 18px;
        }

        .category-nav .nav-link-highlight {
            display: none;
        }

        .hero-title {
            font-size: 2rem;
        }

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

        .hero-login-card {
            max-width: 100%;
            margin-top: 36px;
        }

        .stats-panel {
            padding: 32px 20px;
        }

        .stats-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 30px 16px;
        }

        .steps-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 30px 20px;
        }

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

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

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

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

        .stat-item .stat-number {
            font-size: 2rem;
        }

        .service-grid-2x3 {
            grid-template-columns: 1fr;
        }

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

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

        .contact-info-side,
        .contact-form-side {
            padding: 32px 24px;
        }

        .faq-question h3 {
            font-size: 16px;
        }

        .faq-answer-inner {
            padding-right: 10px;
        }
    }

    @media (max-width: 520px) {
        .navbar-main {
            padding: 12px 0;
        }
        .logo-text {
            font-size: 1.1rem;
        }
        .logo-icon {
            width: 34px;
            height: 34px;
            font-size: 1rem;
        }
    }

/* roulang page: category1 */
:root {
            --color-page: #F5F8FC;
            --color-surface: #FFFFFF;
            --color-primary: #285DC4;
            --color-primary-deep: #1D4290;
            --color-primary-soft: #E8F0FB;
            --color-accent: #F2B35C;
            --color-text: #1B2733;
            --color-text-secondary: #556575;
            --color-muted: #8596A8;
            --color-line: #DCE6EF;
            --color-success: #2F9B7A;
            --color-soft-panel: #ECF2F8;
            --font-main: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", sans-serif;
            --shadow-card: 0 4px 20px rgba(29, 66, 130, 0.06);
            --shadow-hover: 0 10px 30px rgba(29, 66, 130, 0.10);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-input: 10px;
            --content-max: 1200px;
            --section-space: clamp(64px, 8vw, 110px);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--color-page);
            color: var(--color-text);
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color .2s ease;
        }

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

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

        .container-custom {
            width: 100%;
            max-width: var(--content-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-header {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-line);
            position: relative;
            z-index: 50;
        }

        .header-main-area {
            background: var(--color-surface);
            padding: 14px 0;
        }

        .header-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 22px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            min-width: 210px;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
        }

        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
            font-weight: 700;
            color: var(--color-text);
            font-size: 19px;
            white-space: nowrap;
        }

        .logo-sub {
            display: block;
            font-size: 12px;
            font-weight: 500;
            color: var(--color-muted);
            letter-spacing: .5px;
        }

        .global-search {
            flex: 1 1 auto;
            max-width: 620px;
            margin: 0 auto;
            display: flex;
            justify-content: center;
        }

        .search-form {
            width: 100%;
            max-width: 560px;
            min-width: 0;
            display: flex;
            align-items: center;
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-btn);
            padding: 4px 4px 4px 14px;
            box-shadow: 0 1px 8px rgba(29, 66, 130, .04);
            transition: border-color .2s ease, box-shadow .2s ease;
        }

        .search-form:focus-within {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 4px var(--color-primary-soft);
        }

        .search-form i {
            color: var(--color-muted);
            font-size: 15px;
            margin-right: 8px;
        }

        .search-form input {
            flex: 1;
            border: 0;
            box-shadow: none;
            outline: none;
            height: 42px;
            min-width: 0;
            background: transparent;
            color: var(--color-text);
        }

        .search-form input::placeholder {
            color: var(--color-muted);
            font-size: 14px;
        }

        .search-btn {
            flex-shrink: 0;
            border: 0;
            background: var(--color-primary);
            color: #fff;
            border-radius: 8px;
            height: 44px;
            padding: 0 24px;
            font-weight: 600;
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: background .2s ease, transform .2s ease;
        }

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

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

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

        .btn-login-header {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-btn);
            height: 46px;
            padding: 0 22px;
            font-weight: 600;
            font-size: 15px;
            border: 0;
            white-space: nowrap;
            transition: all .2s ease;
        }

        .btn-login-header:hover {
            background: var(--color-primary-deep);
            color: #fff;
            transform: translateY(-1px);
        }

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

        .category-nav-wrap {
            background: var(--color-surface);
            border-top: 1px solid var(--color-line);
            border-bottom: 1px solid var(--color-line);
        }

        .category-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            min-height: 56px;
            padding: 8px 0;
            overflow-x: auto;
            scrollbar-width: none;
        }

        .category-nav::-webkit-scrollbar {
            display: none;
        }

        .nav-item-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            color: var(--color-text-secondary);
            font-weight: 500;
            border-radius: 999px;
            white-space: nowrap;
            position: relative;
            font-size: 15px;
        }

        .nav-item-link:hover {
            color: var(--color-primary);
            background: var(--color-primary-soft);
        }

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

        .nav-item-link.active::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 0;
            height: 2px;
            border-radius: 2px;
            background: var(--color-primary);
        }

        .nav-link-highlight {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-left: auto;
            height: 36px;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            border-radius: 999px;
            padding: 0 18px;
            font-weight: 600;
            white-space: nowrap;
            font-size: 14px;
            transition: all .2s ease;
        }

        .nav-link-highlight:hover {
            background: var(--color-primary);
            color: #fff;
        }

        .category-nav-toggler {
            display: none;
            border: 1px solid var(--color-line);
            background: var(--color-surface);
            border-radius: var(--radius-btn);
            color: var(--color-text);
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 600;
            gap: 8px;
            margin: 10px 0;
        }

        .section {
            padding: var(--section-space) 0;
        }

        .hero-section {
            position: relative;
            padding: 54px 0 80px;
            background-image: linear-gradient(to bottom, rgba(255, 255, 255, .96), rgba(245, 248, 252, .94)), url(/assets/images/backpic/back-1.png);
            background-repeat: no-repeat;
            background-position: center;
            background-size: cover;
            border-bottom: 1px solid var(--color-line);
        }

        .breadcrumb-wrap {
            margin-bottom: 32px;
        }

        .custom-breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            list-style: none;
            padding: 0;
            margin: 0;
            font-size: 14px;
            color: var(--color-muted);
        }

        .custom-breadcrumb li {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .custom-breadcrumb li+li::before {
            content: "/";
            color: var(--color-line);
            font-weight: 300;
        }

        .custom-breadcrumb a {
            color: var(--color-muted);
            text-decoration: none;
        }

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

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 410px;
            gap: 52px;
            align-items: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-primary-soft);
            color: var(--color-primary-deep);
            border-radius: 999px;
            padding: 7px 16px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .hero-title {
            font-size: clamp(36px, 4vw, 52px);
            font-weight: 700;
            line-height: 1.25;
            color: var(--color-text);
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .hero-lead {
            font-size: 17px;
            line-height: 1.85;
            color: var(--color-text-secondary);
            max-width: 640px;
            margin-bottom: 30px;
        }

        .hero-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .btn-primary,
        .btn-light-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 48px;
            padding: 0 28px;
            border-radius: var(--radius-btn);
            border: 0;
            font-weight: 600;
            font-size: 16px;
            line-height: 1.2;
            transition: all .2s ease;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(40, 93, 196, .18);
        }

        .btn-primary:hover {
            background: var(--color-primary-deep);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(29, 66, 144, .18);
        }

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

        .btn-primary:focus-visible,
        .btn-light-primary:focus-visible,
        .search-btn:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px var(--color-primary-soft);
        }

        .btn-light-primary {
            background: var(--color-surface);
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }

        .btn-light-primary:hover {
            background: var(--color-primary-soft);
            color: var(--color-primary-deep);
            transform: translateY(-2px);
        }

        .hero-login-card {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: 20px;
            padding: 30px;
            box-shadow: var(--shadow-card);
        }

        .hero-login-card .login-card-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 2px;
        }

        .hero-login-card .login-card-sub {
            color: var(--color-muted);
            font-size: 15px;
            margin-bottom: 22px;
        }

        .form-label {
            color: var(--color-text-secondary);
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 6px;
        }

        .form-control-custom {
            width: 100%;
            height: 48px;
            border: 1px solid var(--color-line);
            border-radius: var(--radius-input);
            background: var(--color-surface);
            padding: 0 14px;
            color: var(--color-text);
            font-size: 15px;
            outline: none;
            transition: border-color .2s ease, box-shadow .2s ease;
        }

        .form-control-custom:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 4px var(--color-primary-soft);
        }

        .login-input-wrap {
            position: relative;
        }

        .login-input-wrap .control-icon {
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--color-muted);
            font-size: 14px;
        }

        .login-input-wrap .form-control-custom {
            padding-left: 42px;
        }

        .form-check-label {
            color: var(--color-text-secondary);
        }

        .login-submit {
            width: 100%;
            height: 48px;
            border: 0;
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 16px;
            transition: background .2s ease, transform .15s ease;
        }

        .login-submit:hover {
            background: var(--color-primary-deep);
        }

        .login-links {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 14px;
            padding: 10px 2px 0;
        }

        .login-links a {
            color: var(--color-primary);
        }

        .login-links a:hover {
            color: var(--color-primary-deep);
            text-decoration: underline;
        }

        .trust-note {
            margin-top: 14px;
            background: var(--color-primary-soft);
            border-radius: 12px;
            padding: 10px 14px;
            color: var(--color-primary-deep);
            font-size: 13px;
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .section-head {
            text-align: center;
            max-width: 820px;
            margin: 0 auto 48px;
        }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-primary);
            font-weight: 600;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: clamp(28px, 3vw, 38px);
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .section-sub {
            color: var(--color-text-secondary);
            font-size: 16px;
            line-height: 1.8;
        }

        .qa-card-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .qa-login-card {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
            transition: box-shadow .25s ease, transform .25s ease;
            height: 100%;
        }

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

        .qa-topline {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .qa-icon {
            width: 46px;
            height: 46px;
            border-radius: 14px;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 19px;
            flex-shrink: 0;
        }

        .qa-tag {
            display: inline-flex;
            align-items: center;
            background: var(--color-primary-soft);
            color: var(--color-primary-deep);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 600;
        }

        .qa-login-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 10px;
            line-height: 1.5;
        }

        .qa-login-card p {
            color: var(--color-text-secondary);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 18px;
        }

        .qa-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            font-size: 14px;
            color: var(--color-primary);
            transition: gap .2s ease;
        }

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

        .official-service-section {
            background: var(--color-surface);
        }

        .service-visual-card {
            display: flex;
            flex-direction: column;
            background: var(--color-page);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            overflow: hidden;
            height: 100%;
            transition: box-shadow .25s ease, transform .25s ease;
            box-shadow: var(--shadow-card);
        }

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

        .service-visual-card .img-wrap {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #EAF0F6;
            position: relative;
        }

        .service-visual-card .img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

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

        .service-body h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .service-body p {
            color: var(--color-text-secondary);
            font-size: 14px;
            line-height: 1.75;
            margin-bottom: 18px;
            flex: 1;
        }

        .service-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

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

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 26px;
        }

        .process-item {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            position: relative;
            height: 100%;
            transition: transform .2s ease;
        }

        .process-item:hover {
            transform: translateY(-3px);
        }

        .process-step-num {
            width: 44px;
            height: 44px;
            margin: 0 auto 18px;
            border-radius: 50%;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 17px;
        }

        .process-item h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .process-item p {
            color: var(--color-text-secondary);
            font-size: 14px;
            line-height: 1.75;
            margin-bottom: 0;
        }

        .security-data-section {
            padding: var(--section-space) 0;
        }

        .security-panel {
            background: var(--color-primary-soft);
            border-radius: 28px;
            padding: clamp(36px, 5vw, 66px);
            display: grid;
            grid-template-columns: .9fr 1.1fr;
            gap: 50px;
            align-items: center;
        }

        .security-panel-left .section-sub {
            margin-top: 12px;
            margin-bottom: 20px;
        }

        .security-note {
            color: var(--color-primary-deep);
            background: rgba(255, 255, 255, .75);
            border-left: 4px solid var(--color-primary);
            border-radius: 10px;
            padding: 14px 16px;
            font-size: 14px;
        }

        .stat-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px 28px;
        }

        .stat-item {
            background: var(--color-surface);
            border-radius: 18px;
            padding: 20px 22px;
            border: 1px solid rgba(255, 255, 255, .6);
        }

        .stat-icon {
            color: var(--color-accent);
            font-size: 18px;
            margin-bottom: 8px;
        }

        .stat-number {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--color-text);
            display: flex;
            align-items: baseline;
            gap: 4px;
        }

        .stat-unit {
            font-size: 16px;
            font-weight: 500;
            color: var(--color-text-secondary);
        }

        .stat-note {
            color: var(--color-muted);
            font-size: 13px;
            margin-top: 4px;
        }

        .faq-section {
            background: #FFFFFF;
        }

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

        .faq-item {
            border-bottom: 1px solid var(--color-line);
            padding: 4px 0;
        }

        .faq-question {
            background: none;
            border: 0;
            width: 100%;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            padding: 22px 4px;
            cursor: pointer;
            transition: color .2s ease;
        }

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

        .faq-question:focus-visible {
            outline: none;
            color: var(--color-primary);
        }

        .faq-icon {
            color: var(--color-primary);
            font-size: 18px;
            transition: transform .3s ease;
        }

        .faq-question[aria-expanded="true"] .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: 0 42px 24px 4px;
            color: var(--color-text-secondary);
            font-size: 15px;
            line-height: 1.85;
        }

        .faq-more {
            text-align: center;
            margin-top: 28px;
            color: var(--color-muted);
            font-size: 15px;
        }

        .faq-more a {
            color: var(--color-primary);
            font-weight: 600;
        }

        .related-category-section {
            background: var(--color-surface);
        }

        .related-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .related-card {
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            background: var(--color-page);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow .25s ease, transform .25s ease;
            height: 100%;
        }

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

        .related-card .related-img {
            aspect-ratio: 16 / 10;
            overflow: hidden;
        }

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

        .related-body {
            padding: 26px;
        }

        .related-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .related-body p {
            color: var(--color-text-secondary);
            font-size: 15px;
            line-height: 1.75;
            margin-bottom: 14px;
        }

        .related-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            margin-top: 14px;
            padding-top: 14px;
            border-top: 1px solid var(--color-line);
        }

        .related-meta span {
            font-size: 13px;
            color: var(--color-muted);
        }

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

        .contact-card {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: 24px;
            box-shadow: var(--shadow-card);
            padding: clamp(28px, 4vw, 48px);
            display: grid;
            grid-template-columns: .85fr 1.15fr;
            gap: 48px;
        }

        .contact-info {
            display: flex;
            flex-direction: column;
            gap: 22px;
        }

        .contact-info h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .contact-info p {
            color: var(--color-text-secondary);
        }

        .contact-line {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            padding: 16px 0;
            border-bottom: 1px solid var(--color-line);
        }

        .contact-line .contact-icon {
            width: 42px;
            height: 42px;
            flex-shrink: 0;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }

        .contact-line strong {
            display: block;
            font-size: 15px;
            margin-bottom: 4px;
            color: var(--color-text);
        }

        .contact-line span {
            color: var(--color-text-secondary);
            font-size: 14px;
        }

        .form-label-light {
            font-size: 14px;
        }

        .form-select-custom {
            width: 100%;
            height: 48px;
            border: 1px solid var(--color-line);
            border-radius: var(--radius-input);
            padding: 0 14px;
            background-color: #fff;
            color: var(--color-text);
            font-size: 15px;
            outline: none;
            appearance: none;
        }

        .form-select-custom:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 4px var(--color-primary-soft);
        }

        .form-textarea {
            width: 100%;
            border: 1px solid var(--color-line);
            border-radius: var(--radius-input);
            min-height: 110px;
            padding: 12px 14px;
            color: var(--color-text);
            font-size: 15px;
            background: #fff;
            outline: none;
            resize: vertical;
        }

        .form-textarea:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 4px var(--color-primary-soft);
        }

        .site-footer {
            background: var(--color-soft-panel);
            border-top: 1px solid var(--color-line);
            padding-top: 64px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand .logo {
            margin-bottom: 18px;
            min-width: 0;
        }

        .footer-brand p {
            color: var(--color-text-secondary);
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 18px;
            max-width: 300px;
        }

        .footer-col h5 {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 18px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col a {
            color: var(--color-text-secondary);
            font-size: 14px;
        }

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

        .tag-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--color-primary-soft);
            color: var(--color-primary-deep);
            font-size: 13px;
            font-weight: 500;
            border-radius: 999px;
            padding: 6px 14px;
        }

        .footer-bottom-bordered {
            border-top: 1px solid var(--color-line);
            padding: 22px 0;
            font-size: 13px;
            color: var(--color-muted);
            text-align: center;
        }

        .footer-bottom-bordered .container-custom {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
            gap: 6px;
        }

        .footer-bottom-bordered a {
            color: var(--color-muted);
        }

        @media (min-width: 992px) {
            #categoryCollapse.category-nav {
                display: flex !important;
            }
        }

        @media (max-width: 991.98px) {
            .header-main {
                flex-wrap: wrap;
                gap: 10px;
            }

            .logo {
                min-width: 0;
            }

            .global-search {
                order: 3;
                width: 100%;
                max-width: none;
                flex-basis: 100%;
            }

            .search-form {
                max-width: none;
            }

            .category-nav-toggler {
                display: inline-flex;
                align-items: center;
                justify-content: center;
                margin-bottom: 8px;
            }

            #categoryCollapse.category-nav {
                flex-direction: row;
                gap: 8px;
                padding: 0 0 12px;
                min-height: 0;
                overflow-x: auto;
            }

            .category-nav-toggler~#categoryCollapse.category-nav {
                width: 100%;
            }

            .hero-grid {
                grid-template-columns: 1fr;
                gap: 38px;
            }

            .security-panel {
                grid-template-columns: 1fr;
                gap: 34px;
            }

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

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

        @media (max-width: 767.98px) {
            .container-custom {
                padding: 0 20px;
            }

            .header-main {
                padding-top: 4px;
            }

            .header-actions .header-cta-text {
                display: none;
            }

            .btn-login-header {
                padding: 0 16px;
                height: 42px;
                font-size: 14px;
            }

            .hero-section {
                padding: 32px 0 50px;
            }

            .hero-login-card {
                padding: 24px;
            }

            .qa-card-grid {
                grid-template-columns: 1fr;
            }

            .service-card-grid {
                grid-template-columns: 1fr;
            }

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

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

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

            .section-head {
                margin-bottom: 32px;
            }

            .search-form input {
                height: 36px;
                font-size: 14px;
            }

            .search-btn {
                height: 36px;
                padding: 0 14px;
                font-size: 13px;
            }

            .nav-link-highlight {
                margin-left: 0;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
                padding-top: 12px;
            }

            .footer-bottom-bordered .container-custom {
                flex-direction: column;
                gap: 4px;
            }

            .security-panel {
                padding: 28px 22px;
                border-radius: 20px;
            }

            .contact-card {
                padding: 24px 20px;
            }
        }

        @media (max-width: 480px) {
            .logo-text {
                font-size: 17px;
            }

            .logo-icon {
                width: 34px;
                height: 34px;
            }

            .header-main {
                gap: 8px;
            }

            .header-actions {
                margin-left: auto;
            }

            .nav-item-link {
                padding: 6px 12px;
                font-size: 14px;
            }

            .qa-login-card,
            .process-item {
                padding: 22px 20px;
            }

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

            .hero-btn-group {
                flex-direction: column;
            }
        }

/* roulang page: article */
:root {
            --color-page: #F5F8FC;
            --color-surface: #FFFFFF;
            --color-primary: #285DC4;
            --color-primary-deep: #1D4290;
            --color-primary-soft: #E8F0FB;
            --color-accent: #F2B35C;
            --color-text: #1B2733;
            --color-text-secondary: #556575;
            --color-muted: #8596A8;
            --color-line: #DCE6EF;
            --color-success: #2F9B7A;
            --color-footer-bg: #ECF2F8;
            --radius-card: 16px;
            --radius-btn: 10px;
            --shadow-card: 0 4px 20px rgba(29, 66, 130, 0.06);
            --shadow-hover: 0 10px 30px rgba(29, 66, 130, 0.1);
            --max-width: 1200px;
            --section-space: clamp(56px, 7vw, 96px);
            --font-sans: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--color-text);
            background-color: var(--color-page);
            -webkit-font-smoothing: antialiased;
        }

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

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

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

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

        .container-site {
            width: min(var(--max-width), 100% - 48px);
            margin: 0 auto;
        }

        .visually-hidden {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* 按钮系统 */
        .btn-star {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 48px;
            padding: 0 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            line-height: 1;
            border: 1px solid transparent;
            transition: all 0.2s ease;
            cursor: pointer;
            text-align: center;
            white-space: nowrap;
        }

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

        .btn-primary-free:hover {
            background-color: var(--color-primary-deep);
            border-color: var(--color-primary-deep);
            color: #fff;
            transform: translateY(-1px);
        }

        .btn-primary-free:active {
            background-color: var(--color-primary-deep);
            transform: translateY(0);
        }

        .btn-primary-free:focus-visible {
            outline: 3px solid var(--color-primary-soft);
            outline-offset: 2px;
        }

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

        .btn-secondary-star:hover {
            background-color: var(--color-primary-soft);
            border-color: var(--color-primary-deep);
            color: var(--color-primary-deep);
            transform: translateY(-1px);
        }

        .btn-secondary-star:focus-visible {
            outline: 3px solid var(--color-primary-soft);
            outline-offset: 2px;
        }

        .btn-ghost-star {
            background: transparent;
            border-color: transparent;
            color: var(--color-primary);
            min-height: 44px;
            padding: 0 16px;
        }

        .btn-ghost-star:hover {
            background-color: var(--color-primary-soft);
            color: var(--color-primary-deep);
        }

        /* 顶部导航 */
        .site-header {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-line);
            position: relative;
            z-index: 1030;
        }

        .top-header {
            background: var(--color-surface);
        }

        .top-header-inner {
            display: flex;
            align-items: center;
            gap: 28px;
            padding: 16px 0;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
            color: var(--color-text);
            min-width: 0;
        }

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

        .logo-icon {
            width: 42px;
            height: 42px;
            flex: 0 0 42px;
            border-radius: 14px;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 19px;
            box-shadow: inset 0 0 0 1px rgba(40, 93, 196, 0.08);
        }

        .logo-text {
            font-weight: 700;
            font-size: 20px;
            line-height: 1.2;
            color: var(--color-text);
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .logo-sub {
            font-size: 12px;
            font-weight: 400;
            color: var(--color-text-secondary);
            letter-spacing: 0.4px;
        }

        .header-search {
            display: flex;
            align-items: center;
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-btn);
            padding: 5px;
            flex: 1;
            min-width: 0;
            max-width: 600px;
            height: 52px;
            margin: 0 auto;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            position: relative;
        }

        .header-search:focus-within {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 4px rgba(40, 93, 196, 0.1);
        }

        .search-icon {
            color: var(--color-muted);
            margin: 0 12px 0 14px;
            font-size: 15px;
        }

        .search-input {
            border: 0;
            outline: 0;
            flex: 1;
            min-width: 0;
            background: transparent;
            color: var(--color-text);
            font-size: 15px;
            height: 100%;
            padding: 0 4px;
        }

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

        .search-submit {
            flex-shrink: 0;
            height: 40px;
            min-width: 84px;
            border: 0;
            border-radius: 8px;
            background: var(--color-primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 0 18px;
            transition: background 0.2s ease, transform 0.2s ease;
        }

        .search-submit:hover {
            background: var(--color-primary-deep);
        }

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

        .free-login-btn {
            background: var(--color-primary);
            color: #fff;
            border: 0;
            min-height: 44px;
            padding: 0 20px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: background 0.2s ease, transform 0.2s ease;
        }

        .free-login-btn:hover {
            background: var(--color-primary-deep);
            color: #fff;
            transform: translateY(-1px);
        }

        .mobile-icon-btn {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: 10px;
            color: var(--color-text);
            font-size: 18px;
            cursor: pointer;
        }

        .mobile-icon-btn:hover {
            background: var(--color-primary-soft);
            color: var(--color-primary);
        }

        .mobile-search-panel {
            display: none;
            padding: 0 24px 18px;
            background: var(--color-surface);
        }

        .mobile-search-panel .header-search {
            width: 100%;
            max-width: none;
        }

        /* 分类导航 */
        .category-nav {
            background: var(--color-surface);
            border-top: 1px solid rgba(220, 230, 239, 0.7);
            position: sticky;
            top: 0;
            z-index: 1020;
        }

        .category-nav-inner {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            padding: 8px 0;
            min-height: 54px;
        }

        .nav-item-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 16px;
            color: var(--color-text-secondary);
            font-size: 15px;
            font-weight: 500;
            border-radius: 999px;
            position: relative;
            transition: background 0.2s ease, color 0.2s ease;
        }

        .nav-item-link:hover {
            color: var(--color-primary);
            background: var(--color-primary-soft);
        }

        .nav-item-link.active {
            color: var(--color-primary);
            font-weight: 600;
            background: var(--color-primary-soft);
        }

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

        .nav-link-highlight {
            margin-left: auto;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-primary);
            color: #fff;
            border-radius: 999px;
            padding: 9px 18px;
            font-size: 14px;
            font-weight: 600;
            transition: background 0.2s ease, transform 0.2s ease;
        }

        .nav-link-highlight:hover {
            background: var(--color-primary-deep);
            color: #fff;
            transform: translateY(-1px);
        }

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

        /* 页面面包屑区 */
        .breadcrumb-band {
            background: linear-gradient(180deg, var(--color-page) 0%, #EEF4FB 100%);
            border-bottom: 1px solid rgba(220, 230, 239, 0.6);
            padding: 26px 0 26px;
            position: relative;
            overflow: hidden;
        }

        .breadcrumb-band::before {
            content: "";
            position: absolute;
            top: -30px;
            right: -40px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            border: 1px dashed rgba(40, 93, 196, 0.12);
            pointer-events: none;
        }

        .breadcrumb-band::after {
            content: "";
            position: absolute;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-accent);
            right: 80px;
            top: 28px;
            pointer-events: none;
            box-shadow: 0 0 0 5px rgba(242, 179, 92, 0.15);
        }

        .breadcrumb-list {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--color-muted);
            margin: 0;
        }

        .breadcrumb-list a {
            color: var(--color-muted);
            transition: color 0.2s ease;
        }

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

        .breadcrumb-sep {
            color: #BCC9D6;
            font-size: 13px;
        }

        .breadcrumb-current {
            color: var(--color-text-secondary);
            max-width: 340px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* 文章主体 */
        .article-main {
            padding: 44px 0 56px;
        }

        .content-narrow {
            max-width: 780px;
            margin: 0 auto;
        }

        .article-head {
            padding: 28px 0 12px;
        }

        .article-head .category-tag-row {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 18px;
        }

        .content-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
        }

        .content-badge i {
            font-size: 8px;
            color: var(--color-success);
        }

        .category-pill {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            border: 1px solid var(--color-line);
            color: var(--color-text-secondary);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            padding: 6px 14px;
        }

        .category-pill i {
            color: var(--color-primary);
            font-size: 11px;
        }

        .article-title {
            font-size: clamp(30px, 4vw, 40px);
            line-height: 1.3;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 20px;
            letter-spacing: -0.5px;
        }

        .article-meta-line {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px 24px;
            color: var(--color-muted);
            font-size: 14px;
            margin-bottom: 24px;
        }

        .article-meta-line span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .article-meta-line i {
            color: var(--color-primary);
            font-size: 13px;
        }

        .article-summary-box {
            background: var(--color-primary-soft);
            border: 1px solid rgba(40, 93, 196, 0.1);
            border-radius: var(--radius-card);
            padding: 22px 24px;
            color: var(--color-text-secondary);
            font-size: 16px;
            line-height: 1.85;
            margin-bottom: 36px;
            position: relative;
        }

        .article-summary-box::before {
            content: "摘要";
            display: block;
            font-size: 13px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
            letter-spacing: 2px;
        }

        .article-body {
            max-width: 760px;
            margin: 0 auto;
            font-size: 16px;
            line-height: 1.9;
            color: var(--color-text);
            word-break: break-word;
        }

        .article-body p {
            margin: 0 0 24px;
        }

        .article-body h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-text);
            margin: 42px 0 18px;
            line-height: 1.4;
            padding-bottom: 8px;
            border-bottom: 1px solid var(--color-line);
        }

        .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-text);
            margin: 32px 0 14px;
            line-height: 1.5;
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 24px;
            padding-left: 26px;
        }

        .article-body li {
            margin-bottom: 10px;
        }

        .article-body li::marker {
            color: var(--color-primary);
        }

        .article-body blockquote {
            background: var(--color-primary-soft);
            border-left: 4px solid var(--color-primary);
            border-radius: 0 12px 12px 0;
            margin: 28px 0;
            padding: 18px 24px;
            color: var(--color-text-secondary);
        }

        .article-body blockquote p {
            margin: 0;
        }

        .article-body img {
            border-radius: var(--radius-card);
            margin: 26px 0 10px;
        }

        .article-body figcaption,
        .article-body .img-note {
            font-size: 13px;
            color: var(--color-muted);
            text-align: center;
            margin-bottom: 22px;
        }

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

        .article-body a:hover {
            color: var(--color-primary-deep);
        }

        .article-tags-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            padding: 28px 0 22px;
            margin-top: 36px;
            border-top: 1px solid var(--color-line);
        }

        .article-tags-row .label {
            font-size: 13px;
            color: var(--color-muted);
            margin-right: 4px;
        }

        .tag-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            border-radius: 999px;
            font-size: 13px;
            padding: 6px 14px;
            font-weight: 500;
        }

        .tag-badge i {
            font-size: 10px;
        }

        .article-pager {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding: 18px 0;
            border-top: 1px solid var(--color-line);
            border-bottom: 1px solid var(--color-line);
            margin-top: 10px;
            flex-wrap: wrap;
        }

        .pager-link {
            color: var(--color-text-secondary);
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: color 0.2s ease;
            max-width: 45%;
        }

        .pager-link:hover {
            color: var(--color-primary);
        }

        .pager-center {
            color: var(--color-muted);
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        /* 内容未找到 */
        .article-not-found {
            text-align: center;
            padding: 80px 24px;
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            margin-top: 24px;
        }

        .not-found-icon {
            width: 72px;
            height: 72px;
            border-radius: 24px;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            margin-bottom: 20px;
        }

        .not-found-title {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .not-found-text {
            color: var(--color-text-secondary);
            margin-bottom: 24px;
        }

        /* 延伸阅读 */
        .related-section {
            padding: var(--section-space) 0;
        }

        .related-section + .related-section {
            padding-top: 0;
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 36px;
        }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .section-title {
            font-size: clamp(26px, 3vw, 34px);
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.3;
            margin: 0;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--color-text-secondary);
            margin-top: 8px;
            max-width: 560px;
        }

        .more-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-primary);
            white-space: nowrap;
        }

        .more-link i {
            font-size: 14px;
            transition: transform 0.2s ease;
        }

        .more-link:hover i {
            transform: translateX(4px);
        }

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

        .related-card {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }

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

        .related-card-media {
            aspect-ratio: 16 / 10;
            background: var(--color-primary-soft);
            overflow: hidden;
        }

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

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

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

        .related-card-body .tag-badge {
            align-self: flex-start;
            margin-bottom: 14px;
        }

        .related-card-title {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.5;
            color: var(--color-text);
            margin: 0 0 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

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

        .related-card-text {
            color: var(--color-text-secondary);
            font-size: 14px;
            line-height: 1.75;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin: 0 0 18px;
        }

        .related-card-foot {
            margin-top: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            color: var(--color-muted);
            font-size: 13px;
            padding-top: 14px;
            border-top: 1px solid rgba(220, 230, 239, 0.5);
        }

        .related-card-foot a {
            color: var(--color-primary);
            font-weight: 500;
            font-size: 14px;
        }

        .related-card-foot a i {
            font-size: 12px;
            transition: transform 0.2s ease;
        }

        .related-card-foot a:hover i {
            transform: translateX(4px);
        }

        /* FAQ 区块 */
        .faq-section {
            background: var(--color-surface);
            border-top: 1px solid var(--color-line);
            border-bottom: 1px solid var(--color-line);
            padding: var(--section-space) 0;
        }

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

        .faq-section .section-title,
        .faq-section .section-subtitle {
            text-align: center;
            margin-left: auto;
            margin-right: auto;
        }

        .accordion#article-faq {
            margin-top: 40px;
        }

        .accordion#article-faq .accordion-item {
            background: transparent;
            border: 0;
            border-bottom: 1px solid var(--color-line);
            border-radius: 0 !important;
        }

        .accordion#article-faq .accordion-button {
            background: transparent;
            padding: 22px 0;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            box-shadow: none;
            border-radius: 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: color 0.2s ease;
        }

        .accordion#article-faq .accordion-button::after {
            content: "";
            background: none !important;
            width: 32px;
            height: 32px;
            flex-shrink: 0;
            border-radius: 50%;
            border: 1px solid var(--color-line);
            position: relative;
            transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
        }

        .accordion#article-faq .accordion-button::before {
            content: "\f067";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 12px;
            color: var(--color-primary);
            position: absolute;
            right: 18px;
            top: 50%;
            transform: translateY(-50%);
        }

        .accordion#article-faq .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            border-color: var(--color-primary);
            background: var(--color-primary-soft) !important;
        }

        .accordion#article-faq .accordion-button:not(.collapsed)::before {
            content: "\f068";
        }

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

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

        .accordion#article-faq .accordion-body {
            padding: 0 0 24px;
            color: var(--color-text-secondary);
            font-size: 15px;
            line-height: 1.85;
            max-width: 760px;
        }

        .faq-footer-tip {
            margin-top: 30px;
            font-size: 14px;
            color: var(--color-muted);
            text-align: center;
        }

        .faq-footer-tip a {
            color: var(--color-primary);
            font-weight: 500;
        }

        /* CTA 区块 */
        .cta-section {
            padding: var(--section-space) 0;
            background: var(--color-page);
        }

        .cta-panel {
            border-radius: 24px;
            overflow: hidden;
            position: relative;
            background: linear-gradient(105deg, rgba(232, 240, 251, 0.94) 0%, rgba(255, 255, 255, 0.97) 48%, rgba(242, 179, 92, 0.12) 100%), url("/assets/images/backpic/back-3.png") center/cover no-repeat;
            border: 1px solid var(--color-line);
            box-shadow: var(--shadow-card);
            padding: 48px;
        }

        .cta-content {
            color: var(--color-text);
        }

        .cta-content .section-eyebrow {
            color: var(--color-primary);
        }

        .cta-content h2 {
            font-size: clamp(26px, 3.4vw, 38px);
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text);
            margin: 0 0 16px;
        }

        .cta-content p {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 620px;
            margin-bottom: 0;
        }

        .cta-actions {
            display: flex;
            align-items: flex-start;
            justify-content: flex-end;
            gap: 14px;
            flex-wrap: wrap;
        }

        .cta-actions .btn-star {
            min-width: 150px;
        }

        /* 页脚 */
        .site-footer {
            background: var(--color-footer-bg);
            border-top: 1px solid var(--color-line);
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 48px;
            padding: 64px 0 44px;
        }

        .footer-brand p {
            color: var(--color-text-secondary);
            font-size: 14px;
            line-height: 1.85;
            margin: 18px 0 0;
            max-width: 360px;
        }

        .footer-col h5 {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text);
            margin: 4px 0 18px;
        }

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

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

        .footer-col a {
            color: var(--color-text-secondary);
            font-size: 14px;
            transition: color 0.2s ease, padding-left 0.2s ease;
        }

        .footer-col a:hover {
            color: var(--color-primary);
            padding-left: 3px;
        }

        .footer-bottom-bordered {
            border-top: 1px solid rgba(133, 150, 168, 0.2);
            padding: 22px 0;
        }

        .footer-bottom-bordered .container-site {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 8px;
            color: var(--color-muted);
            font-size: 13px;
            text-align: center;
        }

        /* 返回顶部 */
        .back-to-top {
            position: fixed;
            right: 28px;
            bottom: 28px;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            color: var(--color-primary);
            box-shadow: var(--shadow-card);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: all 0.25s ease;
            z-index: 1200;
        }

        .back-to-top.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .back-to-top:hover {
            background: var(--color-primary);
            color: #fff;
            box-shadow: var(--shadow-hover);
        }

        /* 响应式 */
        @media (max-width: 1199px) {
            .top-header-inner {
                gap: 18px;
            }

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

            .header-search {
                max-width: 500px;
            }
        }

        @media (max-width: 991px) {
            .top-header-inner {
                flex-wrap: wrap;
                gap: 12px;
                padding: 12px 0 10px;
            }

            .header-search {
                display: none;
            }

            .header-actions {
                margin-left: auto;
            }

            .mobile-icon-btn {
                display: inline-flex;
            }

            .category-nav {
                top: 0;
            }

            .category-nav-inner {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
                padding: 8px 0;
                border-top: 1px solid var(--color-line);
            }

            .category-nav-inner.hide-native {
                display: none;
            }

            .category-nav-inner.open-native {
                display: flex;
            }

            .nav-link-highlight {
                margin-left: 0;
            }

            .mobile-search-panel.search-open {
                display: block;
                border-bottom: 1px solid var(--color-line);
            }

            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 40px 24px;
            }

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

            .cta-panel {
                padding: 36px 28px;
            }

            .cta-actions {
                justify-content: flex-start;
                margin-top: 24px;
            }
        }

        @media (max-width: 767px) {
            .container-site {
                width: calc(100% - 32px);
            }

            .top-header-inner {
                gap: 10px;
                padding: 12px 0 10px;
            }

            .logo-icon {
                width: 36px;
                height: 36px;
                flex-basis: 36px;
                font-size: 16px;
                border-radius: 11px;
            }

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

            .logo-sub {
                font-size: 11px;
            }

            .free-login-btn {
                min-height: 38px;
                padding: 0 14px;
                font-size: 13px;
                border-radius: 9px;
            }

            .mobile-icon-btn {
                width: 38px;
                height: 38px;
                font-size: 16px;
            }

            .article-main {
                padding: 20px 0 44px;
            }

            .article-head {
                padding-top: 16px;
            }

            .article-title {
                font-size: 27px;
                word-break: break-word;
            }

            .article-summary-box {
                padding: 18px;
                font-size: 15px;
            }

            .article-meta-line {
                gap: 10px 18px;
                font-size: 13px;
            }

            .breadcrumb-current {
                max-width: 180px;
            }

            .related-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

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

            .more-link {
                font-size: 14px;
            }

            .cta-panel {
                padding: 28px 20px;
                border-radius: 18px;
            }

            .cta-actions .btn-star {
                width: 100%;
            }

            .footer-top {
                grid-template-columns: 1fr;
                padding: 44px 0 32px;
                gap: 32px;
            }

            .back-to-top {
                right: 16px;
                bottom: 16px;
            }
        }

        @media (max-width: 520px) {
            .footer-top {
                padding: 38px 0 24px;
            }

            .category-nav-inner {
                padding: 12px 0;
            }

            .category-nav-inner .nav-item-link {
                padding: 8px 10px;
                font-size: 14px;
            }

            .article-pager {
                flex-direction: column;
                align-items: flex-start;
            }

            .pager-link {
                max-width: none;
            }

            .pager-center {
                display: none;
            }
        }

/* roulang page: category2 */
:root {
            --color-page: #F5F8FC;
            --color-surface: #FFFFFF;
            --color-primary: #285DC4;
            --color-primary-deep: #1D4290;
            --color-primary-soft: #E8F0FB;
            --color-accent: #F2B35C;
            --color-text: #1B2733;
            --color-text-secondary: #556575;
            --color-muted: #8596A8;
            --color-line: #DCE6EF;
            --color-success: #2F9B7A;
            --shadow-card: 0 4px 20px rgba(29, 66, 130, 0.06);
            --shadow-hover: 0 10px 30px rgba(29, 66, 130, 0.10);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--color-text);
            background: var(--color-page);
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            vertical-align: middle;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color .2s ease;
        }

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

        h1, h2, h3, h4, h5 {
            color: var(--color-text);
            line-height: 1.3;
            margin: 0 0 14px;
        }

        p {
            margin: 0 0 14px;
        }

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

        .section-block {
            padding-top: clamp(64px, 8vw, 110px);
            padding-bottom: clamp(64px, 8vw, 110px);
        }

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

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--color-primary);
            background: var(--color-primary-soft);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 999px;
            margin-bottom: 12px;
        }

        .section-head h2,
        .section-head-inline h2 {
            font-size: clamp(26px, 3vw, 36px);
            font-weight: 700;
            margin-bottom: 12px;
        }

        .section-head .section-lead,
        .section-head-inline .section-lead {
            color: var(--color-text-secondary);
            max-width: 760px;
            font-size: 16px;
        }

        .page-section-title {
            margin-bottom: 14px;
        }

        /* ===== Buttons ===== */
        .btn-star-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 48px;
            padding: 0 28px;
            border-radius: 10px;
            border: 0;
            background: var(--color-primary);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            line-height: 1.2;
            text-decoration: none;
            transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
            box-shadow: 0 6px 16px rgba(29, 66, 130, .14);
        }

        .btn-star-primary:hover,
        .btn-star-primary:focus {
            background: var(--color-primary-deep);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 10px 24px rgba(29, 66, 130, .18);
        }

        .btn-star-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(29, 66, 130, .12);
        }

        .btn-star-primary:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px var(--color-primary-soft);
        }

        .btn-star-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 48px;
            padding: 0 28px;
            border-radius: 10px;
            background: #fff;
            border: 1px solid var(--color-primary);
            color: var(--color-primary);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.2;
            text-decoration: none;
            transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
        }

        .btn-star-secondary:hover,
        .btn-star-secondary:focus {
            background: var(--color-primary-soft);
            color: var(--color-primary-deep);
            transform: translateY(-1px);
        }

        .btn-star-secondary:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px var(--color-primary-soft);
        }

        .text-link-arrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--color-primary);
            font-weight: 600;
            font-size: 15px;
        }

        .text-link-arrow i {
            font-size: 13px;
            transition: transform .2s ease;
        }

        .text-link-arrow:hover {
            color: var(--color-primary-deep);
        }

        .text-link-arrow:hover i {
            transform: translateX(4px);
        }

        /* ===== Site Header ===== */
        .site-header {
            position: relative;
            z-index: 110;
        }

        .top-search-row {
            background: #fff;
            padding: 12px 0;
            border-bottom: 1px solid #EDF2F8;
        }

        .header-main-row {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: nowrap;
        }

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

        .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            box-shadow: 0 6px 14px rgba(40, 93, 196, .2);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.15;
            white-space: nowrap;
        }

        .logo-sub {
            display: block;
            font-size: 11px;
            font-weight: 400;
            color: var(--color-muted);
        }

        .header-search-form {
            flex: 0 1 560px;
            width: 100%;
            min-width: 320px;
            margin-inline: auto;
        }

        .search-form {
            display: flex;
            align-items: center;
            height: 52px;
            border: 1px solid var(--color-line);
            border-radius: 10px;
            background: #fff;
            transition: border-color .2s ease, box-shadow .2s ease;
        }

        .search-form:focus-within {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px var(--color-primary-soft);
        }

        .search-form .search-icon {
            display: flex;
            align-items: center;
            padding-left: 16px;
            color: var(--color-muted);
            font-size: 14px;
        }

        .search-form input {
            width: 100%;
            border: 0;
            outline: 0;
            background: transparent;
            padding: 0 13px;
            font-size: 15px;
            color: var(--color-text);
        }

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

        .search-form button {
            border: 0;
            background: var(--color-primary);
            color: #fff;
            min-width: 96px;
            height: 100%;
            border-radius: 0 10px 10px 0;
            font-weight: 600;
            font-size: 15px;
            padding: 0 18px;
            cursor: pointer;
            transition: background .2s ease;
        }

        .search-form button:hover {
            background: var(--color-primary-deep);
        }

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

        .btn-header-login {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            min-height: 44px;
            padding: 0 20px;
            border-radius: 10px;
            background: var(--color-primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            text-decoration: none;
            white-space: nowrap;
            transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
            box-shadow: 0 4px 14px rgba(29, 66, 130, .16);
        }

        .btn-header-login:hover {
            background: var(--color-primary-deep);
            color: #fff;
            transform: translateY(-1px);
        }

        .mobile-search-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border: 1px solid var(--color-line);
            border-radius: 10px;
            background: #fff;
            color: var(--color-primary);
            font-size: 16px;
            cursor: pointer;
        }

        .mobile-search-toggle:hover {
            background: var(--color-primary-soft);
        }

        .mobile-search-panel {
            display: none;
            background: #fff;
            padding: 0 0 14px;
            border-bottom: 1px solid var(--color-line);
        }

        .mobile-search-panel.open {
            display: block;
            animation: softDown .25s ease;
        }

        .mobile-search-panel .header-search-form {
            width: 100%;
            min-width: 0;
            flex: 1 1 auto;
        }

        @keyframes softDown {
            from {
                opacity: 0;
                transform: translateY(-6px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ===== Category Nav ===== */
        .category-nav {
            position: sticky;
            top: 0;
            background: #fff;
            border-bottom: 1px solid var(--color-line);
            z-index: 100;
        }

        .nav-canvas {
            display: flex;
            align-items: center;
            gap: 4px;
            min-height: 54px;
            overflow-x: auto;
            white-space: nowrap;
            scrollbar-width: none;
        }

        .nav-canvas::-webkit-scrollbar {
            display: none;
        }

        .category-nav .nav-item-link {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 15px 14px 13px;
            color: var(--color-text);
            font-size: 15px;
            font-weight: 500;
            border-bottom: 2px solid transparent;
            margin-bottom: -1px;
            position: relative;
            transition: color .2s ease, background .2s ease;
        }

        .category-nav .nav-item-link:hover {
            color: var(--color-primary);
            background: rgba(40, 93, 196, .04);
        }

        .category-nav .nav-item-link.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        .category-nav .nav-item-link.active::after {
            content: "";
            position: absolute;
            left: 12px;
            right: 12px;
            bottom: -1px;
            height: 3px;
            border-radius: 999px;
            background: var(--color-primary);
        }

        .nav-link-highlight {
            margin-left: auto;
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: var(--color-primary);
            color: #fff;
            padding: 9px 20px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
            box-shadow: 0 4px 12px rgba(29, 66, 130, .12);
        }

        .nav-link-highlight:hover {
            background: var(--color-primary-deep);
            color: #fff;
            transform: translateY(-1px);
        }

        /* ===== Hero / Breadcrumb ===== */
        .category-hero {
            position: relative;
            background: #EEF4FC;
            padding: 60px 0 72px;
            border-bottom: 1px solid var(--color-line);
            overflow: hidden;
        }

        .category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            z-index: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: .14;
        }

        .category-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            z-index: 0;
            background: rgba(255, 255, 255, .42);
        }

        .category-hero .container-custom {
            position: relative;
            z-index: 1;
        }

        .breadcrumb-lines {
            font-size: 14px;
            color: var(--color-muted);
            margin-bottom: 20px;
        }

        .breadcrumb-lines a {
            color: var(--color-muted);
        }

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

        .breadcrumb-lines span.divider {
            margin-inline: 9px;
            color: #B4C4D6;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: rgba(232, 240, 251, .88);
            border: 1px solid rgba(40, 93, 196, .1);
            color: var(--color-primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 15px;
            border-radius: 999px;
            margin-bottom: 18px;
        }

        .category-hero h1 {
            font-size: clamp(32px, 4vw, 48px);
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .hero-lead {
            font-size: 16px;
            line-height: 1.85;
            color: var(--color-text-secondary);
            max-width: 780px;
            margin-bottom: 28px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .hero-note {
            margin-top: 20px;
            font-size: 13px;
            color: var(--color-muted);
        }

        .hero-note i {
            color: var(--color-success);
            margin-right: 5px;
        }

        /* ===== Cover Promo ===== */
        .intro-panel {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: 24px;
            box-shadow: var(--shadow-card);
            display: grid;
            grid-template-columns: 1.08fr .92fr;
            gap: 48px;
            align-items: center;
            padding: clamp(28px, 4vw, 52px);
        }

        .intro-copy-list {
            list-style: none;
            padding: 0;
            margin: 20px 0 0;
        }

        .intro-copy-list li {
            position: relative;
            padding-left: 34px;
            margin-bottom: 12px;
            color: var(--color-text-secondary);
            font-size: 15px;
        }

        .intro-copy-list li i {
            position: absolute;
            left: 0;
            top: 3px;
            color: var(--color-primary);
            font-size: 17px;
        }

        .visual-frame {
            border-radius: 18px;
            overflow: hidden;
            border: 1px solid var(--color-line);
            background: var(--color-primary-soft);
            box-shadow: var(--shadow-card);
        }

        .visual-frame img {
            display: block;
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
        }

        .visual-caption {
            padding: 12px 16px;
            font-size: 13px;
            color: var(--color-muted);
            background: #fff;
            border-top: 1px solid var(--color-line);
        }

        /* ===== Timeline Service List ===== */
        .timeline-section {
            background: #fff;
            border-top: 1px solid #EDF2F8;
            border-bottom: 1px solid #EDF2F8;
        }

        .timeline-list {
            position: relative;
            padding-left: 60px;
        }

        .timeline-list::before {
            content: "";
            position: absolute;
            left: 19px;
            top: 6px;
            bottom: 6px;
            width: 2px;
            background: var(--color-line);
            border-radius: 999px;
        }

        .timeline-item {
            position: relative;
            margin-bottom: 30px;
        }

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

        .timeline-dot {
            position: absolute;
            left: -60px;
            top: 24px;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--color-surface);
            border: 1px solid #CFDEED;
            color: var(--color-primary);
            box-shadow: 0 0 0 4px var(--color-primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }

        .timeline-card {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: 16px;
            padding: 26px 30px;
            transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
        }

        .timeline-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
            border-color: #BCCDE6;
        }

        .service-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

        .service-info {
            flex: 1 1 auto;
            min-width: 0;
        }

        .service-title-line {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            margin-bottom: 6px;
        }

        .service-title-line h3 {
            margin: 0;
            font-size: 20px;
            font-weight: 650;
            letter-spacing: -0.1px;
        }

        .timeline-card p {
            color: var(--color-text-secondary);
            font-size: 15px;
            margin: 8px 0 0;
            max-width: 640px;
        }

        .service-entry {
            flex-shrink: 0;
        }

        .service-entry a {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            color: var(--color-primary);
            font-weight: 600;
            font-size: 15px;
            padding: 10px 16px;
            border-radius: 10px;
            border: 1px solid var(--color-line);
            background: #fff;
            transition: all .2s ease;
        }

        .service-entry a:hover {
            background: var(--color-primary-soft);
            border-color: rgba(40, 93, 196, .2);
            color: var(--color-primary-deep);
        }

        .service-entry a i {
            font-size: 13px;
            transition: transform .2s ease;
        }

        .service-entry a:hover i {
            transform: translateX(3px);
        }

        .tag-badge,
        .tag-free,
        .tag-safe {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 11px;
            border-radius: 999px;
            background: var(--color-primary-soft);
            color: var(--color-primary);
        }

        .tag-free {
            background: #E9F6F1;
            color: var(--color-success);
        }

        .tag-safe {
            background: #FFF4E2;
            color: #B87C1E;
        }

        .tag-free i,
        .tag-safe i,
        .tag-badge i {
            font-size: 8px;
        }

        /* ===== Need Select Grid ===== */
        .need-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .need-card {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: 16px;
            padding: 28px 26px;
            box-shadow: var(--shadow-card);
            transition: transform .2s ease, box-shadow .2s ease;
        }

        .need-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        .need-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
        }

        .need-card h3 {
            font-size: 18px;
            font-weight: 650;
            margin-bottom: 8px;
        }

        .need-card p {
            color: var(--color-text-secondary);
            font-size: 14px;
            margin-bottom: 16px;
        }

        .recommend-line {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            border-top: 1px solid var(--color-line);
            padding-top: 16px;
        }

        .recommend-line .rd-name {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: #fff;
            border: 1px solid var(--color-line);
            border-radius: 999px;
            padding: 5px 12px;
            font-size: 13px;
            color: var(--color-text-secondary);
        }

        .recommend-line .rd-name strong {
            color: var(--color-primary);
            font-weight: 600;
        }

        /* ===== Process ===== */
        .process-panel {
            background: var(--color-primary-soft);
            border-radius: 24px;
            padding: clamp(32px, 5vw, 56px);
            position: relative;
            overflow: hidden;
        }

        .process-panel .section-eyebrow {
            background: #fff;
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-top: 36px;
        }

        .step-item {
            position: relative;
        }

        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: #fff;
            border: 1px solid rgba(40, 93, 196, .2);
            color: var(--color-primary);
            font-size: 19px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            box-shadow: 0 4px 12px rgba(29, 66, 130, .06);
        }

        .step-item h3 {
            font-size: 17px;
            font-weight: 650;
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 14px;
            color: var(--color-text-secondary);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 880px;
            margin: 0 auto;
        }

        .faq-help-tip {
            text-align: center;
            margin-top: 28px;
            font-size: 14px;
            color: var(--color-muted);
        }

        .faq-help-tip a {
            font-weight: 600;
        }

        .accordion-item {
            background: transparent;
            border: 0;
            border-bottom: 1px solid var(--color-line);
        }

        .accordion-button {
            background: transparent;
            border: 0;
            border-radius: 0;
            box-shadow: none;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            padding: 22px 4px;
            line-height: 1.5;
            text-align: left;
            transition: color .2s ease;
        }

        .accordion-button:hover {
            color: var(--color-primary);
        }

        .accordion-button:not(.collapsed) {
            background: transparent;
            color: var(--color-primary);
            box-shadow: none;
        }

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

        .accordion-button::after {
            display: none;
        }

        .faq-toggle-icon {
            margin-left: auto;
            color: var(--color-primary);
            font-size: 15px;
            flex-shrink: 0;
            padding-left: 16px;
            transition: transform .3s ease, color .2s ease;
        }

        .accordion-button[aria-expanded="true"] .faq-toggle-icon {
            transform: rotate(45deg);
        }

        .accordion-body {
            padding: 0 4px 24px;
            font-size: 15px;
            line-height: 1.85;
            color: var(--color-text-secondary);
            max-width: 800px;
        }

        /* ===== CTA / Contact ===== */
        .cta-card {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: 24px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .cta-grid {
            display: grid;
            grid-template-columns: .92fr 1.08fr;
        }

        .cta-info {
            background: var(--color-primary-soft);
            padding: clamp(28px, 4vw, 48px);
        }

        .cta-info h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .cta-info p {
            color: var(--color-text-secondary);
            font-size: 15px;
        }

        .contact-item {
            display: flex;
            gap: 12px;
            padding: 8px 0;
            font-size: 15px;
            color: var(--color-text);
        }

        .contact-item i {
            color: var(--color-primary);
            margin-top: 3px;
            width: 18px;
            text-align: center;
        }

        .contact-item span {
            color: var(--color-text-secondary);
        }

        .contact-item strong {
            font-weight: 600;
            display: block;
        }

        .cta-form-panel {
            padding: clamp(28px, 4vw, 48px);
        }

        .cta-form-panel h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .form-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
        }

        .form-control-star {
            background: #fff;
            border: 1px solid var(--color-line);
            border-radius: 10px;
            padding: 11px 14px;
            color: var(--color-text);
            font-size: 15px;
            box-shadow: none;
            transition: border-color .2s ease, box-shadow .2s ease;
        }

        .form-control-star:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px var(--color-primary-soft);
            background: #fff;
            color: var(--color-text);
        }

        select.form-control-star {
            appearance: auto;
        }

        .form-privacy {
            font-size: 13px;
            color: var(--color-muted);
        }

        .form-privacy a {
            color: var(--color-primary);
            font-weight: 600;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #ECF2F8;
            border-top: 1px solid var(--color-line);
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.7fr .9fr .9fr .9fr;
            gap: 42px;
            padding: 70px 0 50px;
        }

        .footer-brand .logo {
            margin-bottom: 14px;
        }

        .footer-brand p {
            color: var(--color-text-secondary);
            font-size: 14px;
            line-height: 1.85;
            margin: 12px 0 0;
            max-width: 360px;
        }

        .footer-col h5 {
            font-size: 16px;
            font-weight: 650;
            margin-bottom: 14px;
        }

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

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

        .footer-col ul a {
            color: var(--color-text-secondary);
            font-size: 14px;
            transition: color .2s ease, padding-left .2s ease;
        }

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

        .footer-bottom-bordered {
            border-top: 1px solid #D9E4EF;
            padding: 20px 0;
            font-size: 13px;
            color: var(--color-muted);
        }

        .footer-bottom-bordered .container-custom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1200px) {
            .header-search-form {
                flex: 0 1 460px;
                min-width: 280px;
            }

            .steps-grid {
                gap: 22px;
            }
        }

        @media (max-width: 992px) {
            .intro-panel {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }

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

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

            .cta-info {
                border-bottom: 1px solid var(--color-line);
            }

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

        @media (max-width: 768px) {
            .container-custom {
                padding-inline: 20px;
            }

            .header-main-row {
                flex-wrap: wrap;
                gap: 10px;
            }

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

            .header-search-form.header-search-desktop {
                display: none;
            }

            .header-search-form {
                flex: 1 1 auto;
                min-width: 0;
                margin: 0;
            }

            .mobile-search-toggle {
                display: inline-flex;
            }

            .btn-header-login .header-login-label {
                display: none;
            }

            .btn-header-login {
                width: 44px;
                padding: 0;
                justify-content: center;
            }

            .category-hero {
                padding: 40px 0 52px;
            }

            .hero-actions .btn-star-primary,
            .hero-actions .btn-star-secondary {
                width: 100%;
            }

            .timeline-list {
                padding-left: 44px;
            }

            .timeline-dot {
                left: -44px;
                width: 34px;
                height: 34px;
                font-size: 14px;
                top: 18px;
            }

            .timeline-list::before {
                left: 17px;
            }

            .service-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }

            .service-entry a {
                width: 100%;
                justify-content: center;
            }

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

            .steps-grid {
                grid-template-columns: 1fr;
                gap: 26px;
            }

            .timeline-card {
                padding: 22px 20px;
            }

            .footer-top {
                grid-template-columns: 1fr;
                padding: 50px 0 30px;
            }
        }

        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 28px;
            }

            .hero-badge {
                font-size: 12px;
            }

            .btn-star-primary,
            .btn-star-secondary {
                padding: 0 18px;
            }

            .intro-panel,
            .process-panel {
                padding: 26px 20px;
                border-radius: 18px;
            }

            .cta-info,
            .cta-form-panel {
                padding: 28px 20px;
            }
        }

/* roulang page: category3 */
:root {
            --color-page: #F5F8FC;
            --color-surface: #FFFFFF;
            --color-primary: #285DC4;
            --color-primary-deep: #1D4290;
            --color-primary-soft: #E8F0FB;
            --color-accent: #F2B35C;
            --color-text: #1B2733;
            --color-text-secondary: #556575;
            --color-muted: #8596A8;
            --color-line: #DCE6EF;
            --color-success: #2F9B7A;
            --radius-card: 16px;
            --radius-btn: 10px;
            --shadow-card: 0 4px 20px rgba(29, 66, 130, 0.06);
            --shadow-hover: 0 10px 30px rgba(29, 66, 130, 0.10);
            --font-sans: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", sans-serif;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-sans);
            background: var(--color-page);
            color: var(--color-text);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color .2s ease;
        }

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

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

        :focus-visible {
            outline: 3px solid var(--color-primary-soft);
            outline-offset: 2px;
            border-radius: 6px;
        }

        .section-block {
            padding: clamp(64px, 8vw, 110px) 0;
        }

        .section-head {
            margin-bottom: 48px;
            max-width: 720px;
        }

        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            background: var(--color-primary-soft);
            border-radius: 999px;
            padding: 6px 14px;
            margin-bottom: 16px;
        }

        .section-head h2,
        .section-title {
            font-size: clamp(28px, 4vw, 38px);
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.01em;
            line-height: 1.3;
            margin-top: 0;
            margin-bottom: 12px;
        }

        .section-head p,
        .section-desc {
            color: var(--color-text-secondary);
            font-size: 16px;
            margin: 0;
        }

        .tag-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            background: var(--color-primary-soft);
            border-radius: 999px;
            padding: 6px 14px;
            line-height: 1.5;
        }

        .tag-badge.gold {
            background: rgba(242, 179, 92, .16);
            color: #9A6514;
        }

        .status-success {
            color: var(--color-success);
        }

        .btn {
            min-height: 48px;
            border-radius: var(--radius-btn);
            padding: 10px 24px;
            font-size: 16px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            transition: all .2s ease;
            border: 1px solid transparent;
        }

        .btn-primary {
            background: var(--color-primary);
            border-color: var(--color-primary);
            --bs-btn-bg: var(--color-primary);
            --bs-btn-border-color: var(--color-primary);
            --bs-btn-hover-bg: var(--color-primary-deep);
            --bs-btn-hover-border-color: var(--color-primary-deep);
            --bs-btn-active-bg: var(--color-primary-deep);
            --bs-btn-active-border-color: var(--color-primary-deep);
            color: #fff !important;
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--color-primary-deep);
            border-color: var(--color-primary-deep);
            transform: translateY(-1px);
            color: #fff !important;
            box-shadow: 0 6px 18px rgba(29, 66, 130, .18);
        }

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

        .btn-outline-primary {
            background: var(--color-surface);
            border-color: var(--color-primary);
            color: var(--color-primary);
            --bs-btn-color: var(--color-primary);
            --bs-btn-border-color: var(--color-primary);
            --bs-btn-hover-color: var(--color-primary-deep);
            --bs-btn-hover-border-color: var(--color-primary-deep);
            --bs-btn-hover-bg: var(--color-primary-soft);
            --bs-btn-active-bg: var(--color-primary-soft);
            --bs-btn-active-border-color: var(--color-primary-deep);
            --bs-btn-active-color: var(--color-primary-deep);
        }

        .btn-outline-primary:hover,
        .btn-outline-primary:focus {
            color: var(--color-primary-deep);
            background: var(--color-primary-soft);
            border-color: var(--color-primary-deep);
            transform: translateY(-1px);
        }

        .btn-link-arrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--color-primary);
            font-weight: 600;
            font-size: 15px;
            background: transparent;
            border: 0;
            padding: 6px 0;
        }

        .btn-link-arrow i {
            transition: transform .2s ease;
        }

        .btn-link-arrow:hover {
            color: var(--color-primary-deep);
        }

        .btn-link-arrow:hover i {
            transform: translateX(4px);
        }

        .site-header {
            position: relative;
            z-index: 1020;
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-line);
        }

        .header-main {
            background: var(--color-surface);
        }

        .header-row {
            display: grid;
            grid-template-columns: minmax(160px, 1fr) minmax(380px, 560px) minmax(180px, 1fr);
            align-items: center;
            gap: 24px;
            min-height: 82px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            min-width: 0;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            flex: 0 0 42px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            border-radius: 12px;
            font-size: 20px;
        }

        .logo-text {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.1;
            white-space: nowrap;
        }

        .logo-sub {
            display: block;
            font-size: 12px;
            font-weight: 500;
            color: var(--color-muted);
            letter-spacing: .08em;
            white-space: nowrap;
        }

        .header-search {
            width: 100%;
        }

        .search-form {
            display: grid;
            grid-template-columns: 1fr auto;
            align-items: center;
            position: relative;
            background: var(--color-page);
            border: 1px solid var(--color-line);
            border-radius: 10px;
            overflow: hidden;
            padding: 4px 4px 4px 0;
            box-shadow: inset 0 1px 2px rgba(29, 66, 130, .03);
        }

        .search-icon {
            position: absolute;
            left: 18px;
            font-size: 15px;
            color: var(--color-muted);
            pointer-events: none;
        }

        .search-input {
            width: 100%;
            border: 0;
            background: transparent;
            height: 44px;
            line-height: 44px;
            padding: 0 120px 0 46px;
            font-size: 15px;
            color: var(--color-text);
            border-radius: 0;
            box-shadow: none !important;
            outline: none;
        }

        .search-input::placeholder {
            color: var(--color-muted);
            font-size: 14px;
        }

        .search-submit {
            background: var(--color-primary);
            color: #fff;
            border: 0;
            height: 44px;
            padding: 0 22px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 15px;
            transition: background .2s ease, transform .2s ease;
            white-space: nowrap;
            cursor: pointer;
        }

        .search-submit:hover {
            background: var(--color-primary-deep);
            color: #fff;
        }

        .search-submit:active {
            transform: translateY(1px);
        }

        .header-actions {
            display: flex;
            align-items: center;
            justify-content: flex-end;
            gap: 10px;
            flex-wrap: wrap;
            min-width: 0;
        }

        .header-login-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--color-primary);
            color: #fff;
            border-radius: 10px;
            padding: 10px 18px;
            font-size: 15px;
            font-weight: 600;
            min-height: 44px;
            border: 0;
            transition: all .2s ease;
            white-space: nowrap;
        }

        .header-login-btn:hover {
            background: var(--color-primary-deep);
            color: #fff;
            transform: translateY(-1px);
        }

        .btn-icon {
            width: 44px;
            height: 44px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--color-page);
            color: var(--color-text);
            border-radius: 10px;
            border: 1px solid var(--color-line);
            font-size: 17px;
            cursor: pointer;
            transition: all .2s ease;
            padding: 0;
        }

        .btn-icon:hover {
            color: var(--color-primary);
            border-color: var(--color-primary);
            background: var(--color-primary-soft);
        }

        .mobile-search-panel {
            background: var(--color-surface);
            border-top: 1px solid var(--color-line);
            padding: 12px 0;
        }

        .category-nav-section {
            background: var(--color-surface);
            border-top: 1px solid rgba(220, 230, 239, .6);
        }

        .category-mobile-bar {
            min-height: 48px;
            padding: 8px 0;
            color: var(--color-text);
            font-weight: 600;
            font-size: 14px;
        }

        .category-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            padding: 10px 0;
        }

        .category-nav .nav-item-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-radius: 999px;
            position: relative;
            white-space: nowrap;
            transition: all .2s ease;
        }

        .category-nav .nav-item-link i {
            font-size: 14px;
            opacity: .75;
        }

        .category-nav .nav-item-link:hover {
            color: var(--color-primary);
            background: var(--color-primary-soft);
        }

        .category-nav .nav-item-link.active {
            color: var(--color-primary);
            background: var(--color-primary-soft);
            font-weight: 600;
        }

        .category-nav .nav-item-link.active::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: -1px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px 2px 0 0;
        }

        .category-nav .nav-link-highlight {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-left: auto;
            background: var(--color-accent);
            color: #4A3310;
            font-weight: 600;
            border-radius: 999px;
            padding: 9px 18px;
            font-size: 14px;
            transition: all .2s ease;
            white-space: nowrap;
            border: 0;
        }

        .category-nav .nav-link-highlight:hover {
            background: #E5A447;
            color: #3E2A0D;
            transform: translateY(-1px);
        }

        @media (min-width: 992px) {
            .category-nav-collapse.collapse:not(.show) {
                display: block;
            }
            .category-mobile-bar {
                display: none;
            }
        }

        @media (max-width: 991.98px) {
            .header-row {
                grid-template-columns: minmax(140px, 1fr) auto;
                gap: 12px;
                min-height: 72px;
            }
            .header-search.desktop-search {
                display: none;
            }
            .header-login-btn {
                display: none;
            }
            .category-nav {
                flex-wrap: nowrap;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                scrollbar-width: none;
                padding: 8px 0 14px;
            }
            .category-nav::-webkit-scrollbar {
                display: none;
            }
            .category-nav .nav-item-link,
            .category-nav .nav-item-link.active {
                border-radius: 10px;
                padding: 8px 14px;
            }
            .category-nav .nav-item-link.active::after {
                display: none;
            }
            .category-nav .nav-link-highlight {
                margin-left: 0;
                flex-shrink: 0;
            }
            .category-nav-collapse:not(.show) {
                display: none;
            }
        }

        .category-hero {
            position: relative;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            overflow: hidden;
        }

        .category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(245, 248, 252, .96) 0%, rgba(232, 240, 251, .90) 100%);
            z-index: 0;
        }

        .category-hero::after {
            content: "";
            position: absolute;
            right: -80px;
            top: -100px;
            width: 420px;
            height: 420px;
            background-image: radial-gradient(circle at center, rgba(40, 93, 196, .18) 1px, transparent 1.5px);
            background-size: 22px 22px;
            opacity: .32;
            z-index: 0;
            pointer-events: none;
        }

        .category-hero .container-custom {
            position: relative;
            z-index: 1;
            padding-top: clamp(56px, 8vw, 96px);
            padding-bottom: clamp(56px, 8vw, 96px);
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--color-muted);
            margin-bottom: 18px;
            flex-wrap: wrap;
        }

        .breadcrumb-nav a {
            color: var(--color-muted);
            font-weight: 500;
        }

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

        .breadcrumb-nav .breadcrumb-sep {
            opacity: .5;
        }

        .breadcrumb-nav .breadcrumb-current {
            color: var(--color-text-secondary);
            font-weight: 600;
        }

        .hero-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(40, 93, 196, .1);
            color: var(--color-primary);
            font-size: 14px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 16px;
        }

        .category-hero h1 {
            font-size: clamp(32px, 5vw, 50px);
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.01em;
            color: var(--color-text);
            margin: 0 0 18px 0;
            max-width: 660px;
        }

        .category-hero .hero-lead {
            font-size: 17px;
            line-height: 1.8;
            color: var(--color-text-secondary);
            margin-bottom: 28px;
            max-width: 600px;
        }

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

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 26px;
        }

        .category-hero-card {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: 20px;
            padding: 28px;
            box-shadow: var(--shadow-card);
            margin-left: auto;
            max-width: 440px;
            position: relative;
        }

        .category-hero-card .hero-card-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            margin-bottom: 20px;
        }

        .category-hero-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin: 0;
        }

        .category-hero-card .hero-card-star {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--color-accent);
            color: #4A3310;
            font-size: 18px;
            flex: 0 0 44px;
        }

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

        .security-check-list li {
            display: flex;
            gap: 12px;
            padding: 13px 0;
            border-bottom: 1px solid var(--color-line);
            align-items: flex-start;
            font-size: 15px;
            line-height: 1.6;
        }

        .security-check-list li:last-child {
            border-bottom: 0;
        }

        .security-check-list li i.fa-circle-check {
            color: var(--color-success);
            margin-top: 5px;
            font-size: 16px;
            flex: 0 0 16px;
        }

        .category-hero-card .hero-card-note {
            margin-top: 18px;
            padding: 12px 14px;
            border-radius: 12px;
            background: var(--color-primary-soft);
            color: var(--color-text-secondary);
            font-size: 14px;
            line-height: 1.65;
        }

        .scene-card {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            padding: 28px;
            height: 100%;
            box-shadow: var(--shadow-card);
            transition: box-shadow .25s ease, transform .25s ease;
        }

        .scene-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .scene-card-icon {
            width: 56px;
            height: 56px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            border-radius: 14px;
            font-size: 22px;
            margin-bottom: 18px;
        }

        .scene-card h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 10px;
        }

        .scene-card p {
            color: var(--color-text-secondary);
            font-size: 15px;
            margin-bottom: 18px;
            line-height: 1.7;
        }

        .scene-card .btn-link-arrow {
            font-size: 14px;
        }

        .security-split-card {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: box-shadow .25s ease, transform .25s ease;
        }

        .security-split-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .security-split-cover img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
        }

        .security-split-body {
            padding: 30px;
            flex: 1 1 auto;
        }

        .security-split-body h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .security-split-body>p {
            color: var(--color-text-secondary);
            margin-bottom: 20px;
            line-height: 1.7;
        }

        .security-split-list {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
        }

        .security-split-list li {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            padding: 8px 0;
            font-size: 15px;
            line-height: 1.65;
        }

        .security-split-list li i {
            color: var(--color-success);
            margin-top: 6px;
        }

        .process-card {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            padding: 26px;
            height: 100%;
            box-shadow: var(--shadow-card);
            text-align: center;
            position: relative;
            transition: box-shadow .25s ease, transform .25s ease;
        }

        .process-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .process-num {
            width: 46px;
            height: 46px;
            margin: 0 auto 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 700;
            font-size: 17px;
        }

        .process-card h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .process-card p {
            color: var(--color-text-secondary);
            font-size: 14px;
            margin: 0;
            line-height: 1.7;
        }

        .related-card {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            padding: 28px 30px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            box-shadow: var(--shadow-card);
            transition: box-shadow .25s ease, transform .25s ease;
        }

        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .related-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            flex: 0 0 52px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            font-size: 20px;
        }

        .related-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 4px;
        }

        .related-sub {
            color: var(--color-muted);
            font-size: 14px;
            margin: 0;
        }

        .related-arrow {
            color: var(--color-primary);
            font-size: 18px;
        }

        .faq-shell {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 0 26px;
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-shell .accordion-item {
            background: transparent;
            border: 0;
            border-bottom: 1px solid var(--color-line);
            border-radius: 0 !important;
        }

        .faq-shell .accordion-item:last-child {
            border-bottom: 0;
        }

        .faq-shell .accordion-button {
            background: var(--color-surface);
            color: var(--color-text);
            font-weight: 600;
            font-size: 16px;
            line-height: 1.6;
            padding: 22px 20px 22px 4px;
            box-shadow: none;
        }

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

        .faq-shell .accordion-button:focus {
            box-shadow: none;
            border-radius: 0;
        }

        .faq-shell .accordion-button::after {
            width: 20px;
            height: 20px;
            background-size: 20px;
            opacity: .7;
        }

        .faq-shell .accordion-body {
            padding: 0 46px 24px 4px;
            color: var(--color-text-secondary);
            font-size: 15px;
            line-height: 1.85;
        }

        .faq-more {
            text-align: center;
            margin-top: 28px;
            font-size: 15px;
            color: var(--color-text-secondary);
        }

        .support-cta {
            position: relative;
            background: var(--color-primary-soft);
            border-radius: 20px;
            padding: clamp(32px, 5vw, 56px);
            overflow: hidden;
        }

        .support-cta::before {
            content: "";
            position: absolute;
            width: 260px;
            height: 260px;
            right: -70px;
            top: -70px;
            background-image: radial-gradient(circle at center, rgba(40, 93, 196, .18) 1px, transparent 1.5px);
            background-size: 18px 18px;
            opacity: .5;
            pointer-events: none;
        }

        .support-cta h2 {
            font-size: clamp(25px, 3.6vw, 34px);
            font-weight: 700;
            margin: 0 0 14px;
        }

        .support-cta p {
            font-size: 16px;
            color: var(--color-text-secondary);
            margin: 0;
            max-width: 720px;
        }

        .support-cta .cta-actions {
            position: relative;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 28px;
        }

        .site-footer {
            background: #ECF2F8;
            border-top: 1px solid var(--color-line);
            margin-top: clamp(64px, 8vw, 110px);
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 0.8fr 0.9fr;
            gap: 40px;
            padding: 64px 0 48px;
        }

        .footer-brand .logo {
            margin-bottom: 14px;
        }

        .footer-brand p {
            color: var(--color-text-secondary);
            font-size: 14px;
            line-height: 1.8;
            max-width: 340px;
            margin: 0;
        }

        .footer-col h5 {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 18px;
        }

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

        .footer-col ul li {
            padding: 6px 0;
        }

        .footer-col ul a {
            color: var(--color-text-secondary);
            font-size: 14px;
            transition: color .2s ease, padding-left .2s ease;
        }

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

        .footer-bottom-bordered {
            border-top: 1px solid var(--color-line);
            padding: 16px 0;
            font-size: 13px;
            color: var(--color-muted);
        }

        .footer-bottom-bordered a {
            color: var(--color-muted);
        }

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

        @media (max-width: 991.98px) {
            .footer-top {
                grid-template-columns: 1fr 1fr;
                row-gap: 36px;
            }
            .header-actions .header-login-btn {
                display: none;
            }
        }

        @media (max-width: 767.98px) {
            .container-custom {
                padding-left: 20px;
                padding-right: 20px;
            }
            .header-row {
                min-height: 66px;
            }
            .logo-icon {
                width: 38px;
                height: 38px;
                flex-basis: 38px;
                font-size: 18px;
            }
            .logo-text {
                font-size: 19px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 30px;
                padding-top: 48px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .category-hero h1 {
                font-size: 30px;
            }
            .category-hero .hero-lead {
                font-size: 16px;
            }
            .category-hero-card {
                margin-left: 0;
                max-width: 100%;
            }
            .section-block {
                padding-top: 56px;
                padding-bottom: 56px;
            }
            .hero-btn-group .btn {
                width: 100%;
            }
            .support-cta .btn {
                width: 100%;
            }
            .faq-shell {
                padding: 0 18px;
            }
            .category-nav .nav-item-link {
                font-size: 14px;
                padding: 8px 12px;
            }
        }

        @media (max-width: 400px) {
            .header-row {
                gap: 6px;
            }
            .logo-text {
                font-size: 17px;
            }
            .logo-icon {
                width: 36px;
                height: 36px;
                flex-basis: 36px;
                font-size: 16px;
            }
            .btn-icon {
                width: 40px;
                height: 40px;
            }
            .header-actions {
                gap: 6px;
            }
        }