/* roulang page: index */
/* ===== 设计变量 ===== */
    :root {
        --color-primary: #1a2a4a;
        --color-primary-light: #2a3f6a;
        --color-primary-dark: #0f1b33;
        --color-accent: #d4a848;
        --color-accent-light: #e8c36a;
        --color-accent-dark: #b8892e;
        --color-bg: #f8f9fb;
        --color-bg-alt: #eef0f5;
        --color-bg-card: #ffffff;
        --color-text: #1a1a2e;
        --color-text-soft: #4a4a6a;
        --color-text-muted: #7a7a9a;
        --color-border: #e0e2ea;
        --color-border-light: #f0f1f6;
        --color-success: #28a745;
        --color-error: #dc3545;
        --color-warning: #ffc107;
        --radius-sm: 6px;
        --radius-md: 12px;
        --radius-lg: 20px;
        --radius-xl: 28px;
        --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
        --shadow-md: 0 6px 24px rgba(0,0,0,0.07);
        --shadow-lg: 0 12px 48px rgba(0,0,0,0.10);
        --shadow-xl: 0 24px 64px rgba(0,0,0,0.14);
        --transition: 0.25s ease;
        --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        --container-max: 1200px;
        --header-height: 72px;
    }

    /* ===== 基础重置 ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
    body {
        font-family: var(--font-sans);
        font-size: 16px;
        line-height: 1.6;
        color: var(--color-text);
        background: var(--color-bg);
    }
    a { color: inherit; text-decoration: none; transition: color var(--transition); }
    a:hover { color: var(--color-accent); }
    img { max-width: 100%; height: auto; display: block; }
    button, input, textarea, select { font-family: inherit; font-size: inherit; }
    ul, ol { list-style: none; }
    h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; }
    .container {
        max-width: var(--container-max);
        margin: 0 auto;
        padding: 0 24px;
    }
    @media (max-width: 768px) {
        .container { padding: 0 16px; }
    }

    /* ===== 导航 ===== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 1000;
        background: #ffffff;
        border-bottom: 1px solid var(--color-border-light);
        box-shadow: var(--shadow-sm);
        height: var(--header-height);
        display: flex;
        align-items: center;
    }
    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        max-width: var(--container-max);
        margin: 0 auto;
        padding: 0 24px;
    }
    .site-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 22px;
        font-weight: 800;
        color: var(--color-primary);
        letter-spacing: -0.3px;
    }
    .site-logo .logo-icon {
        width: 36px;
        height: 36px;
        background: var(--color-primary);
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 18px;
    }
    .site-logo:hover { color: var(--color-primary); }
    .main-nav { display: flex; align-items: center; gap: 8px; }
    .main-nav a {
        padding: 8px 18px;
        border-radius: var(--radius-sm);
        font-weight: 500;
        color: var(--color-text-soft);
        font-size: 15px;
        transition: all var(--transition);
        position: relative;
    }
    .main-nav a:hover { background: var(--color-bg-alt); color: var(--color-primary); }
    .main-nav a.active {
        background: var(--color-primary);
        color: #ffffff;
    }
    .nav-actions {
        display: flex;
        align-items: center;
        gap: 12px;
    }
    .nav-search {
        display: flex;
        align-items: center;
        background: var(--color-bg);
        border: 1px solid var(--color-border);
        border-radius: 24px;
        padding: 6px 16px;
        gap: 8px;
        transition: border-color var(--transition);
    }
    .nav-search:focus-within { border-color: var(--color-accent); }
    .nav-search input {
        border: none;
        background: transparent;
        padding: 4px 0;
        outline: none;
        width: 140px;
        font-size: 14px;
        color: var(--color-text);
    }
    .nav-search input::placeholder { color: var(--color-text-muted); }
    .nav-search button {
        border: none;
        background: transparent;
        color: var(--color-text-muted);
        cursor: pointer;
        font-size: 14px;
        padding: 2px;
    }
    .btn-cta-nav {
        background: var(--color-accent);
        color: var(--color-primary-dark);
        padding: 8px 22px;
        border-radius: 24px;
        font-weight: 600;
        font-size: 14px;
        border: none;
        cursor: pointer;
        transition: all var(--transition);
        white-space: nowrap;
    }
    .btn-cta-nav:hover { background: var(--color-accent-light); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(212,168,72,0.3); }
    .nav-toggle { display: none; border: none; background: transparent; font-size: 24px; color: var(--color-primary); cursor: pointer; padding: 4px; }
    @media (max-width: 900px) {
        .main-nav { display: none; }
        .main-nav.mobile-open { display: flex; flex-direction: column; position: absolute; top: var(--header-height); left: 0; width: 100%; background: #fff; border-bottom: 1px solid var(--color-border); padding: 16px 24px; gap: 4px; box-shadow: var(--shadow-lg); }
        .main-nav.mobile-open a { width: 100%; padding: 12px 16px; }
        .nav-toggle { display: block; }
        .nav-search { display: none; }
        .btn-cta-nav { padding: 6px 16px; font-size: 13px; }
    }
    @media (max-width: 520px) {
        .header-inner { padding: 0 12px; }
        .site-logo { font-size: 18px; }
        .site-logo .logo-icon { width: 30px; height: 30px; font-size: 14px; }
        .btn-cta-nav { padding: 4px 12px; font-size: 12px; }
    }

    /* ===== Hero 首屏 ===== */
    .hero {
        position: relative;
        min-height: 78vh;
        display: flex;
        align-items: center;
        justify-content: center;
        background: var(--color-primary-dark);
        overflow: hidden;
    }
    .hero-bg {
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        opacity: 0.35;
        filter: saturate(0.7);
    }
    .hero-overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(26,42,74,0.85) 0%, rgba(15,27,51,0.70) 100%);
    }
    .hero-content {
        position: relative;
        z-index: 2;
        text-align: center;
        max-width: 820px;
        padding: 40px 24px;
    }
    .hero-badge {
        display: inline-block;
        background: rgba(212,168,72,0.18);
        color: var(--color-accent-light);
        padding: 6px 20px;
        border-radius: 30px;
        font-size: 14px;
        font-weight: 500;
        margin-bottom: 24px;
        border: 1px solid rgba(212,168,72,0.25);
        backdrop-filter: blur(4px);
    }
    .hero h1 {
        font-size: 52px;
        font-weight: 800;
        color: #ffffff;
        margin-bottom: 20px;
        line-height: 1.2;
        letter-spacing: -0.5px;
    }
    .hero h1 .highlight { color: var(--color-accent); }
    .hero p {
        font-size: 20px;
        color: rgba(255,255,255,0.80);
        max-width: 640px;
        margin: 0 auto 36px;
        line-height: 1.7;
    }
    .hero-actions {
        display: flex;
        gap: 16px;
        justify-content: center;
        flex-wrap: wrap;
    }
    .btn-primary {
        background: var(--color-accent);
        color: var(--color-primary-dark);
        padding: 14px 36px;
        border-radius: 30px;
        font-weight: 700;
        font-size: 16px;
        border: none;
        cursor: pointer;
        transition: all var(--transition);
        display: inline-flex;
        align-items: center;
        gap: 8px;
    }
    .btn-primary:hover { background: var(--color-accent-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(212,168,72,0.35); }
    .btn-outline {
        background: transparent;
        color: #ffffff;
        padding: 14px 36px;
        border-radius: 30px;
        font-weight: 600;
        font-size: 16px;
        border: 2px solid rgba(255,255,255,0.30);
        cursor: pointer;
        transition: all var(--transition);
        display: inline-flex;
        align-items: center;
        gap: 8px;
    }
    .btn-outline:hover { background: rgba(255,255,255,0.10); border-color: rgba(255,255,255,0.60); transform: translateY(-2px); }
    .hero-stats {
        display: flex;
        gap: 40px;
        justify-content: center;
        margin-top: 50px;
        flex-wrap: wrap;
    }
    .hero-stat { text-align: center; }
    .hero-stat .num { font-size: 34px; font-weight: 800; color: #fff; }
    .hero-stat .label { font-size: 14px; color: rgba(255,255,255,0.60); margin-top: 4px; }
    @media (max-width: 768px) {
        .hero { min-height: 60vh; }
        .hero h1 { font-size: 32px; }
        .hero p { font-size: 16px; }
        .hero-stats { gap: 20px; }
        .hero-stat .num { font-size: 26px; }
    }
    @media (max-width: 520px) {
        .hero h1 { font-size: 26px; }
        .hero p { font-size: 14px; margin-bottom: 24px; }
        .btn-primary, .btn-outline { padding: 10px 24px; font-size: 14px; }
        .hero-stats { gap: 12px; }
        .hero-stat .num { font-size: 20px; }
    }

    /* ===== 通用板块 ===== */
    .section {
        padding: 80px 0;
    }
    .section-alt { background: var(--color-bg-alt); }
    .section-title-group {
        text-align: center;
        margin-bottom: 48px;
    }
    .section-title-group .pre-title {
        display: inline-block;
        color: var(--color-accent);
        font-weight: 600;
        font-size: 14px;
        letter-spacing: 2px;
        text-transform: uppercase;
        margin-bottom: 8px;
    }
    .section-title-group h2 {
        font-size: 36px;
        font-weight: 800;
        color: var(--color-primary);
        margin-bottom: 12px;
    }
    .section-title-group p {
        color: var(--color-text-soft);
        font-size: 17px;
        max-width: 600px;
        margin: 0 auto;
    }
    @media (max-width: 768px) {
        .section { padding: 48px 0; }
        .section-title-group h2 { font-size: 26px; }
        .section-title-group p { font-size: 15px; }
    }

    /* ===== 核心优势卡片 ===== */
    .grid-3 {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 28px;
    }
    .grid-4 {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
    }
    .card {
        background: var(--color-bg-card);
        border-radius: var(--radius-md);
        padding: 32px 28px;
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--color-border-light);
        transition: all var(--transition);
    }
    .card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--color-border); }
    .card-icon {
        width: 52px;
        height: 52px;
        border-radius: 14px;
        background: var(--color-bg-alt);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 22px;
        color: var(--color-primary);
        margin-bottom: 18px;
        transition: background var(--transition);
    }
    .card:hover .card-icon { background: var(--color-primary); color: #fff; }
    .card h3 { font-size: 20px; font-weight: 700; margin-bottom: 10px; color: var(--color-primary); }
    .card p { color: var(--color-text-soft); font-size: 15px; line-height: 1.7; }
    @media (max-width: 900px) {
        .grid-3 { grid-template-columns: repeat(2, 1fr); }
        .grid-4 { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 520px) {
        .grid-3, .grid-4 { grid-template-columns: 1fr; }
        .card { padding: 24px 20px; }
    }

    /* ===== 分类入口 ===== */
    .category-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
    }
    .category-card {
        position: relative;
        border-radius: var(--radius-md);
        overflow: hidden;
        background: var(--color-bg-card);
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--color-border-light);
        transition: all var(--transition);
        cursor: pointer;
    }
    .category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
    .category-card img { width: 100%; height: 180px; object-fit: cover; transition: transform 0.4s ease; }
    .category-card:hover img { transform: scale(1.05); }
    .category-card .cat-body { padding: 18px 20px 22px; }
    .category-card .cat-body h3 { font-size: 17px; font-weight: 700; color: var(--color-primary); margin-bottom: 4px; }
    .category-card .cat-body p { font-size: 14px; color: var(--color-text-muted); }
    .category-card .cat-tag {
        display: inline-block;
        margin-top: 10px;
        padding: 4px 14px;
        border-radius: 20px;
        background: var(--color-bg-alt);
        font-size: 12px;
        font-weight: 600;
        color: var(--color-primary-light);
    }
    @media (max-width: 900px) {
        .category-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 520px) {
        .category-grid { grid-template-columns: 1fr; }
        .category-card img { height: 150px; }
    }

    /* ===== 资讯列表 ===== */
    .post-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 28px;
    }
    .post-card {
        background: var(--color-bg-card);
        border-radius: var(--radius-md);
        overflow: hidden;
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--color-border-light);
        transition: all var(--transition);
        display: flex;
        flex-direction: column;
    }
    .post-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
    .post-card .post-img {
        width: 100%;
        height: 200px;
        object-fit: cover;
    }
    .post-card .post-body {
        padding: 22px 24px 26px;
        flex: 1;
        display: flex;
        flex-direction: column;
    }
    .post-card .post-meta {
        display: flex;
        align-items: center;
        gap: 12px;
        margin-bottom: 10px;
        font-size: 13px;
        color: var(--color-text-muted);
    }
    .post-card .post-meta .cat-badge {
        background: var(--color-bg-alt);
        padding: 2px 12px;
        border-radius: 20px;
        font-weight: 600;
        color: var(--color-primary-light);
        font-size: 12px;
    }
    .post-card .post-body h3 {
        font-size: 18px;
        font-weight: 700;
        color: var(--color-primary);
        margin-bottom: 8px;
        line-height: 1.4;
    }
    .post-card .post-body h3 a { color: inherit; }
    .post-card .post-body h3 a:hover { color: var(--color-accent); }
    .post-card .post-body p {
        color: var(--color-text-soft);
        font-size: 14px;
        line-height: 1.7;
        flex: 1;
    }
    .post-card .post-foot {
        margin-top: 14px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        font-size: 13px;
        color: var(--color-text-muted);
    }
    .post-card .post-foot a {
        color: var(--color-accent);
        font-weight: 600;
        font-size: 13px;
    }
    .post-card .post-foot a:hover { color: var(--color-accent-dark); }
    .empty-msg {
        grid-column: 1 / -1;
        text-align: center;
        padding: 48px 24px;
        color: var(--color-text-muted);
        font-size: 16px;
        background: var(--color-bg-card);
        border-radius: var(--radius-md);
        border: 1px dashed var(--color-border);
    }
    @media (max-width: 768px) {
        .post-grid { grid-template-columns: 1fr; }
        .post-card .post-img { height: 170px; }
    }

    /* ===== 数据统计 ===== */
    .stats-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
        text-align: center;
    }
    .stat-item {
        background: var(--color-bg-card);
        border-radius: var(--radius-md);
        padding: 36px 20px;
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--color-border-light);
        transition: all var(--transition);
    }
    .stat-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
    .stat-item .num { font-size: 38px; font-weight: 800; color: var(--color-primary); }
    .stat-item .num .suffix { font-size: 22px; color: var(--color-accent); }
    .stat-item .label { font-size: 15px; color: var(--color-text-soft); margin-top: 6px; }
    @media (max-width: 900px) {
        .stats-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 520px) {
        .stats-grid { grid-template-columns: 1fr; }
        .stat-item .num { font-size: 30px; }
    }

    /* ===== 服务流程 ===== */
    .steps {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
        position: relative;
    }
    .step {
        text-align: center;
        padding: 32px 16px;
        background: var(--color-bg-card);
        border-radius: var(--radius-md);
        border: 1px solid var(--color-border-light);
        transition: all var(--transition);
        position: relative;
    }
    .step:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
    .step .step-num {
        width: 44px;
        height: 44px;
        border-radius: 50%;
        background: var(--color-primary);
        color: #fff;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 20px;
        font-weight: 800;
        margin: 0 auto 16px;
    }
    .step h4 { font-size: 17px; font-weight: 700; color: var(--color-primary); margin-bottom: 6px; }
    .step p { font-size: 14px; color: var(--color-text-soft); }
    @media (max-width: 900px) {
        .steps { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 520px) {
        .steps { grid-template-columns: 1fr; }
    }

    /* ===== FAQ ===== */
    .faq-list {
        max-width: 780px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 12px;
    }
    .faq-item {
        background: var(--color-bg-card);
        border-radius: var(--radius-md);
        border: 1px solid var(--color-border-light);
        overflow: hidden;
        transition: all var(--transition);
    }
    .faq-item:hover { border-color: var(--color-border); }
    .faq-question {
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 18px 24px;
        background: none;
        border: none;
        cursor: pointer;
        font-size: 16px;
        font-weight: 600;
        color: var(--color-primary);
        text-align: left;
        gap: 12px;
        transition: background var(--transition);
    }
    .faq-question:hover { background: var(--color-bg-alt); }
    .faq-question .faq-icon { color: var(--color-accent); font-size: 14px; transition: transform var(--transition); flex-shrink: 0; }
    .faq-item.open .faq-question .faq-icon { transform: rotate(180deg); }
    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease, padding 0.35s ease;
        padding: 0 24px;
        color: var(--color-text-soft);
        font-size: 15px;
        line-height: 1.7;
    }
    .faq-item.open .faq-answer {
        max-height: 300px;
        padding: 0 24px 20px;
    }
    @media (max-width: 520px) {
        .faq-question { padding: 14px 16px; font-size: 15px; }
        .faq-answer { padding: 0 16px; font-size: 14px; }
        .faq-item.open .faq-answer { padding: 0 16px 16px; }
    }

    /* ===== CTA ===== */
    .cta-section {
        background: var(--color-primary);
        padding: 72px 0;
        text-align: center;
    }
    .cta-section h2 {
        font-size: 36px;
        font-weight: 800;
        color: #ffffff;
        margin-bottom: 12px;
    }
    .cta-section p {
        font-size: 18px;
        color: rgba(255,255,255,0.75);
        max-width: 560px;
        margin: 0 auto 32px;
    }
    .cta-section .cta-actions {
        display: flex;
        gap: 16px;
        justify-content: center;
        flex-wrap: wrap;
    }
    .cta-section .btn-primary { background: var(--color-accent); color: var(--color-primary-dark); }
    .cta-section .btn-primary:hover { background: var(--color-accent-light); }
    .cta-section .btn-outline-light {
        background: transparent;
        color: #ffffff;
        padding: 14px 36px;
        border-radius: 30px;
        font-weight: 600;
        font-size: 16px;
        border: 2px solid rgba(255,255,255,0.30);
        cursor: pointer;
        transition: all var(--transition);
        display: inline-flex;
        align-items: center;
        gap: 8px;
    }
    .cta-section .btn-outline-light:hover { background: rgba(255,255,255,0.10); border-color: rgba(255,255,255,0.60); transform: translateY(-2px); }
    @media (max-width: 768px) {
        .cta-section h2 { font-size: 26px; }
        .cta-section p { font-size: 15px; }
        .cta-section { padding: 48px 0; }
    }

    /* ===== 页脚 ===== */
    .site-footer {
        background: var(--color-primary-dark);
        color: rgba(255,255,255,0.70);
        padding: 48px 0 0;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 32px;
        padding-bottom: 32px;
        border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .footer-brand .site-logo { color: #fff; margin-bottom: 12px; }
    .footer-brand .site-logo .logo-icon { background: var(--color-accent); color: var(--color-primary-dark); }
    .footer-brand p { font-size: 14px; line-height: 1.8; max-width: 320px; }
    .footer-col h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 16px; }
    .footer-col a {
        display: block;
        color: rgba(255,255,255,0.60);
        font-size: 14px;
        padding: 4px 0;
        transition: color var(--transition);
    }
    .footer-col a:hover { color: var(--color-accent); }
    .footer-bottom {
        padding: 20px 0;
        text-align: center;
        font-size: 13px;
        color: rgba(255,255,255,0.40);
    }
    .footer-bottom a { color: rgba(255,255,255,0.50); }
    .footer-bottom a:hover { color: var(--color-accent); }
    @media (max-width: 900px) {
        .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 520px) {
        .footer-grid { grid-template-columns: 1fr; }
    }

    /* ===== 响应式微调 ===== */
    @media (max-width: 1024px) {
        .hero h1 { font-size: 40px; }
    }
    @media (max-width: 480px) {
        .hero { min-height: 50vh; }
        .hero-content { padding: 20px 16px; }
        .hero-stats { flex-direction: column; gap: 8px; }
        .section-title-group h2 { font-size: 22px; }
    }

    /* ===== 辅助 ===== */
    .text-center { text-align: center; }
    .mt-12 { margin-top: 12px; }
    .mt-24 { margin-top: 24px; }
    .mb-24 { margin-bottom: 24px; }
    .gap-8 { gap: 8px; }
    .flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: article */
:root {
    --primary: #0b1a30;
    --primary-light: #132a4a;
    --accent: #f59e0b;
    --accent-hover: #d4880a;
    --accent-light: #fef3c7;
    --bg: #f8f9fa;
    --bg-white: #ffffff;
    --text: #1a1a2e;
    --text-light: #6b7280;
    --text-lighter: #9ca3af;
    --border: #e5e7eb;
    --border-light: #f3f4f6;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --shadow: 0 4px 20px rgba(11,26,48,0.08);
    --shadow-lg: 0 12px 40px rgba(11,26,48,0.12);
    --shadow-hover: 0 8px 30px rgba(11,26,48,0.15);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    --container: 1200px;
    --content-width: 820px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }
input, button, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--primary); }

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

/* ===== Header ===== */
.site-header {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border);
    position: sticky; top: 0; z-index: 100;
    box-shadow: 0 2px 12px rgba(11,26,48,0.04);
}
.header-inner {
    max-width: var(--container); margin: 0 auto; padding: 0 24px;
    display: flex; align-items: center; justify-content: space-between;
    height: 68px; gap: 24px;
}
.site-logo {
    display: flex; align-items: center; gap: 10px;
    font-size: 22px; font-weight: 800; color: var(--primary); letter-spacing: -0.5px;
    flex-shrink: 0;
}
.site-logo .logo-icon { color: var(--accent); font-size: 26px; }
.site-logo:hover { color: var(--primary); opacity: 0.9; }
.main-nav { display: flex; align-items: center; gap: 8px; }
.main-nav a {
    padding: 8px 18px; border-radius: var(--radius-sm);
    font-size: 15px; font-weight: 500; color: var(--text-light);
    transition: var(--transition); position: relative;
}
.main-nav a:hover { background: var(--accent-light); color: var(--accent); }
.main-nav a.active { background: var(--accent-light); color: var(--accent); font-weight: 600; }
.nav-actions { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.nav-search {
    display: flex; align-items: center; background: var(--bg); border-radius: 50px;
    border: 1px solid var(--border); overflow: hidden; transition: var(--transition);
}
.nav-search:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-light); }
.nav-search input {
    padding: 8px 16px; background: transparent; border: none;
    font-size: 14px; color: var(--text); width: 180px;
}
.nav-search input::placeholder { color: var(--text-lighter); }
.nav-search button {
    padding: 8px 14px; background: transparent; color: var(--text-light);
    cursor: pointer; font-size: 15px; transition: var(--transition);
}
.nav-search button:hover { color: var(--accent); }
.btn-cta-nav {
    padding: 10px 24px; background: var(--accent); color: #fff; border-radius: 50px;
    font-size: 14px; font-weight: 600; cursor: pointer; transition: var(--transition);
    border: none; letter-spacing: 0.3px; white-space: nowrap;
}
.btn-cta-nav:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(245,158,11,0.35); }
.nav-toggle { display: none; background: none; font-size: 22px; color: var(--primary); cursor: pointer; padding: 4px; }

/* Mobile Nav */
@media (max-width: 900px) {
    .main-nav { display: none; position: absolute; top: 68px; left: 0; right: 0; background: var(--bg-white); border-bottom: 1px solid var(--border); flex-direction: column; padding: 16px 24px; gap: 4px; box-shadow: var(--shadow); }
    .main-nav.open { display: flex; }
    .main-nav a { width: 100%; padding: 12px 16px; border-radius: var(--radius-sm); }
    .nav-search input { width: 120px; }
    .nav-toggle { display: block; }
    .btn-cta-nav { padding: 8px 18px; font-size: 13px; }
}
@media (max-width: 520px) {
    .header-inner { gap: 12px; padding: 0 16px; }
    .nav-search { display: none; }
    .btn-cta-nav { font-size: 12px; padding: 7px 14px; }
    .site-logo { font-size: 18px; }
    .site-logo .logo-icon { font-size: 22px; }
}

/* ===== Breadcrumb Banner ===== */
.article-banner {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    position: relative; overflow: hidden; padding: 60px 0 50px;
}
.article-banner::before {
    content: ''; position: absolute; inset: 0;
    background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    opacity: 0.12; pointer-events: none;
}
.article-banner .container { position: relative; z-index: 1; }
.breadcrumb {
    display: flex; align-items: center; gap: 8px; font-size: 14px;
    color: rgba(255,255,255,0.7); margin-bottom: 20px; flex-wrap: wrap;
}
.breadcrumb a { color: rgba(255,255,255,0.8); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { color: rgba(255,255,255,0.5); }
.breadcrumb .current { color: var(--accent); font-weight: 500; }
.article-banner h1 {
    font-size: 36px; color: #fff; max-width: 800px;
    line-height: 1.25; font-weight: 800; letter-spacing: -0.5px;
}
.article-meta-bar {
    display: flex; flex-wrap: wrap; align-items: center; gap: 16px 24px;
    margin-top: 20px; font-size: 14px; color: rgba(255,255,255,0.75);
}
.article-meta-bar .badge-cat {
    background: var(--accent); color: #fff; padding: 4px 14px;
    border-radius: 50px; font-size: 13px; font-weight: 600;
}
.article-meta-bar i { margin-right: 6px; }
@media (max-width: 768px) {
    .article-banner { padding: 40px 0 32px; }
    .article-banner h1 { font-size: 26px; }
    .article-meta-bar { gap: 12px 16px; font-size: 13px; }
}
@media (max-width: 520px) {
    .article-banner h1 { font-size: 22px; }
    .article-meta-bar { flex-direction: column; align-items: flex-start; gap: 8px; }
}

/* ===== Article Content ===== */
.article-main { padding: 48px 0 60px; }
.article-layout {
    max-width: var(--content-width); margin: 0 auto;
}
.article-body {
    background: var(--bg-white); border-radius: var(--radius-lg);
    padding: 48px 52px; box-shadow: var(--shadow);
}
.article-body .post-header { margin-bottom: 32px; padding-bottom: 24px; border-bottom: 1px solid var(--border-light); }
.article-body .post-header h1 {
    font-size: 30px; margin-bottom: 16px; color: var(--primary);
    letter-spacing: -0.3px;
}
.post-meta {
    display: flex; flex-wrap: wrap; align-items: center; gap: 16px 24px;
    font-size: 14px; color: var(--text-light);
}
.post-meta .cat-tag {
    background: var(--accent-light); color: var(--accent); padding: 3px 12px;
    border-radius: 50px; font-weight: 600; font-size: 13px;
}
.post-meta i { margin-right: 6px; }
.post-content {
    font-size: 16px; line-height: 1.9; color: #2d3748;
}
.post-content p { margin-bottom: 1.5em; }
.post-content h2, .post-content h3, .post-content h4 {
    color: var(--primary); margin-top: 1.8em; margin-bottom: 0.6em;
}
.post-content h2 { font-size: 24px; }
.post-content h3 { font-size: 20px; }
.post-content ul, .post-content ol { margin-bottom: 1.5em; padding-left: 24px; }
.post-content ul li { list-style: disc; margin-bottom: 6px; }
.post-content ol li { list-style: decimal; margin-bottom: 6px; }
.post-content img { border-radius: var(--radius-sm); margin: 1.5em 0; box-shadow: var(--shadow); }
.post-content blockquote {
    border-left: 4px solid var(--accent); background: var(--accent-light);
    padding: 16px 24px; margin: 1.5em 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text); font-style: italic;
}
.post-content a { color: var(--accent); text-decoration: underline; }
.post-content a:hover { color: var(--accent-hover); }
@media (max-width: 768px) {
    .article-body { padding: 28px 24px; }
    .article-body .post-header h1 { font-size: 24px; }
    .post-content { font-size: 15px; }
    .article-main { padding: 32px 0 40px; }
}
@media (max-width: 520px) {
    .article-body { padding: 20px 16px; border-radius: var(--radius-sm); }
    .article-body .post-header h1 { font-size: 20px; }
    .post-content { font-size: 14px; }
    .post-meta { gap: 10px; font-size: 13px; }
}

/* ===== Article Footer (Tags / Share) ===== */
.article-footer-bar {
    display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
    margin-top: 36px; padding-top: 24px; border-top: 1px solid var(--border-light);
    gap: 16px;
}
.article-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.article-tags a {
    display: inline-block; padding: 4px 14px; background: var(--bg);
    border-radius: 50px; font-size: 13px; color: var(--text-light); border: 1px solid var(--border);
    transition: var(--transition);
}
.article-tags a:hover { background: var(--accent-light); color: var(--accent); border-color: var(--accent); }
.article-share { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-light); }
.article-share a {
    display: inline-flex; align-items: center; justify-content: center;
    width: 36px; height: 36px; border-radius: 50%; background: var(--bg);
    color: var(--text-light); transition: var(--transition); border: 1px solid var(--border);
}
.article-share a:hover { background: var(--accent); color: #fff; border-color: var(--accent); }
@media (max-width: 520px) {
    .article-footer-bar { flex-direction: column; align-items: flex-start; }
}

/* ===== Related Posts ===== */
.related-section { padding: 0 0 60px; }
.related-section .section-title {
    max-width: var(--content-width); margin: 0 auto 32px;
    font-size: 26px; font-weight: 700; color: var(--primary);
}
.related-section .section-title span { color: var(--accent); }
.related-grid {
    max-width: var(--content-width); margin: 0 auto;
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
}
.related-card {
    background: var(--bg-white); border-radius: var(--radius); overflow: hidden;
    box-shadow: var(--shadow); transition: var(--transition);
    border: 1px solid var(--border-light);
}
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.related-card .card-img {
    height: 180px; background: var(--border-light); overflow: hidden;
}
.related-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.related-card:hover .card-img img { transform: scale(1.05); }
.related-card .card-body { padding: 20px 22px 24px; }
.related-card .card-cat {
    display: inline-block; background: var(--accent-light); color: var(--accent);
    padding: 2px 12px; border-radius: 50px; font-size: 12px; font-weight: 600;
    margin-bottom: 10px;
}
.related-card .card-title {
    font-size: 17px; font-weight: 700; color: var(--primary); margin-bottom: 8px;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.related-card .card-title a { color: inherit; }
.related-card .card-title a:hover { color: var(--accent); }
.related-card .card-excerpt {
    font-size: 14px; color: var(--text-light); line-height: 1.6;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.related-card .card-meta { margin-top: 14px; font-size: 13px; color: var(--text-lighter); display: flex; gap: 16px; }
@media (max-width: 768px) {
    .related-grid { grid-template-columns: 1fr; gap: 18px; }
    .related-section .section-title { font-size: 22px; }
}
@media (max-width: 520px) {
    .related-card .card-body { padding: 16px; }
    .related-card .card-title { font-size: 15px; }
}

/* ===== CTA Section ===== */
.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    position: relative; overflow: hidden; padding: 60px 0;
}
.cta-section::before {
    content: ''; position: absolute; inset: 0;
    background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
    opacity: 0.08; pointer-events: none;
}
.cta-section .container { position: relative; z-index: 1; text-align: center; }
.cta-section h2 { font-size: 34px; color: #fff; margin-bottom: 14px; font-weight: 800; }
.cta-section p { font-size: 17px; color: rgba(255,255,255,0.8); max-width: 600px; margin: 0 auto 28px; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.btn-cta-primary {
    padding: 14px 40px; background: var(--accent); color: #fff; border-radius: 50px;
    font-size: 16px; font-weight: 700; cursor: pointer; transition: var(--transition);
    border: none; display: inline-flex; align-items: center; gap: 8px;
}
.btn-cta-primary:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(245,158,11,0.4); color: #fff; }
.btn-cta-secondary {
    padding: 14px 36px; background: transparent; color: #fff; border-radius: 50px;
    font-size: 16px; font-weight: 600; cursor: pointer; transition: var(--transition);
    border: 2px solid rgba(255,255,255,0.35); display: inline-flex; align-items: center; gap: 8px;
}
.btn-cta-secondary:hover { background: rgba(255,255,255,0.1); border-color: #fff; color: #fff; }
@media (max-width: 768px) {
    .cta-section { padding: 44px 0; }
    .cta-section h2 { font-size: 26px; }
    .cta-section p { font-size: 15px; }
    .btn-cta-primary, .btn-cta-secondary { padding: 12px 28px; font-size: 14px; }
}

/* ===== Not Found ===== */
.not-found-box {
    max-width: var(--content-width); margin: 0 auto; text-align: center;
    padding: 80px 24px; background: var(--bg-white); border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}
.not-found-box .icon { font-size: 52px; color: var(--text-lighter); margin-bottom: 20px; }
.not-found-box h2 { font-size: 28px; color: var(--primary); margin-bottom: 12px; }
.not-found-box p { color: var(--text-light); font-size: 16px; margin-bottom: 28px; }
.not-found-box .btn-back {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 32px; background: var(--primary); color: #fff; border-radius: 50px;
    font-size: 15px; font-weight: 600; transition: var(--transition);
}
.not-found-box .btn-back:hover { background: var(--accent); color: #fff; transform: translateY(-2px); }

/* ===== Footer ===== */
.site-footer {
    background: var(--primary); color: rgba(255,255,255,0.8); padding: 56px 0 0;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.footer-brand .site-logo { color: #fff; margin-bottom: 16px; }
.footer-brand .site-logo .logo-icon { color: var(--accent); }
.footer-brand p { font-size: 14px; line-height: 1.7; color: rgba(255,255,255,0.6); }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 18px; }
.footer-col a { display: block; color: rgba(255,255,255,0.6); font-size: 14px; padding: 6px 0; transition: var(--transition); }
.footer-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom { padding: 24px 0; text-align: center; font-size: 13px; color: rgba(255,255,255,0.4); }
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: var(--accent); }
@media (max-width: 900px) {
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 520px) {
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .site-footer { padding: 40px 0 0; }
}

/* ===== Utilities ===== */
.text-center { text-align: center; }
.mt-2 { margin-top: 20px; }
.mb-2 { margin-bottom: 20px; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f1b3d;
            --primary-light: #1a2a6c;
            --primary-dark: #080e24;
            --accent: #e8491d;
            --accent-hover: #d03d14;
            --accent-light: #fde8e0;
            --gold: #f5a623;
            --gold-light: #fef3d6;
            --bg: #f8f9fc;
            --bg-card: #ffffff;
            --text: #1a1a2e;
            --text-weak: #6b7280;
            --text-reverse: #ffffff;
            --border: #e5e7eb;
            --border-light: #f0f0f5;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --space-xs: 4px;
            --space-sm: 8px;
            --space-md: 16px;
            --space-lg: 32px;
            --space-xl: 48px;
            --space-2xl: 72px;
            --max-width: 1200px;
            --header-h: 72px;
            --font-sans: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', 'Noto Sans', sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== 基础重置 ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            transition: var(--transition);
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--primary);
        }
        h1 {
            font-size: 2.75rem;
        }
        h2 {
            font-size: 2rem;
        }
        h3 {
            font-size: 1.35rem;
        }
        h4 {
            font-size: 1.1rem;
        }
        p {
            color: var(--text-weak);
            margin-bottom: 1em;
        }
        p:last-child {
            margin-bottom: 0;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--space-lg);
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border: 2px solid transparent;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            border-color: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 73, 29, 0.3);
        }
        .btn-primary:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-outline:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
        }
        .btn-ghost {
            background: transparent;
            color: var(--text-weak);
            border-color: transparent;
        }
        .btn-ghost:hover {
            background: var(--border-light);
            color: var(--primary);
        }
        .btn-lg {
            padding: 14px 36px;
            font-size: 1.1rem;
            border-radius: var(--radius-md);
        }
        .btn-sm {
            padding: 6px 16px;
            font-size: 0.85rem;
        }

        /* ===== 徽章 / 标签 ===== */
        .badge {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--accent-light);
            color: var(--accent);
        }
        .badge-gold {
            background: var(--gold-light);
            color: #b8860b;
        }
        .badge-primary {
            background: rgba(15, 27, 61, 0.08);
            color: var(--primary);
        }
        .badge-success {
            background: #e0f7e6;
            color: #1a8a3f;
        }
        .tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: var(--radius-sm);
            font-size: 0.8rem;
            background: var(--bg);
            color: var(--text-weak);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: var(--header-h);
            display: flex;
            align-items: center;
        }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--space-lg);
            width: 100%;
            display: flex;
            align-items: center;
            gap: var(--space-lg);
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--primary);
            flex-shrink: 0;
            letter-spacing: -0.5px;
        }
        .site-logo .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: var(--accent);
            color: #fff;
            font-size: 1rem;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }
        .main-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-weak);
            transition: var(--transition);
            position: relative;
        }
        .main-nav a:hover {
            color: var(--primary);
            background: rgba(15, 27, 61, 0.04);
        }
        .main-nav a.active {
            color: var(--accent);
            font-weight: 600;
            background: var(--accent-light);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 2px;
            background: var(--accent);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: var(--space-md);
            flex-shrink: 0;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg);
            border-radius: 40px;
            padding: 0 4px 0 16px;
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .nav-search:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(232, 73, 29, 0.1);
        }
        .nav-search input {
            padding: 8px 4px;
            min-width: 140px;
            background: transparent;
            color: var(--text);
            font-size: 0.9rem;
        }
        .nav-search input::placeholder {
            color: var(--text-weak);
        }
        .nav-search button {
            padding: 8px 14px;
            border-radius: 40px;
            color: var(--text-weak);
            transition: var(--transition);
        }
        .nav-search button:hover {
            color: var(--accent);
        }
        .btn-cta-nav {
            padding: 8px 22px;
            border-radius: 40px;
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            border: 2px solid var(--accent);
        }
        .btn-cta-nav:hover {
            background: var(--accent-hover);
            border-color: var(--accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(232, 73, 29, 0.3);
        }
        .nav-toggle {
            display: none;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            font-size: 1.3rem;
            color: var(--primary);
            background: var(--bg);
            border: 1px solid var(--border);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: var(--space-2xl) var(--space-lg);
            background: linear-gradient(135deg, rgba(15, 27, 61, 0.92), rgba(26, 42, 108, 0.88)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 30% 50%, rgba(232, 73, 29, 0.15), transparent 60%);
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
        }
        .hero h1 {
            font-size: 3rem;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -1px;
        }
        .hero p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 28px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero .hero-search {
            display: flex;
            max-width: 520px;
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            border-radius: 50px;
            padding: 4px;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .hero .hero-search input {
            flex: 1;
            padding: 14px 20px;
            background: transparent;
            color: #fff;
            font-size: 1rem;
            border-radius: 50px 0 0 50px;
        }
        .hero .hero-search input::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }
        .hero .hero-search button {
            padding: 14px 28px;
            border-radius: 50px;
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            white-space: nowrap;
        }
        .hero .hero-search button:hover {
            background: var(--accent-hover);
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--space-2xl) 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: var(--space-xl);
        }
        .section-header h2 {
            margin-bottom: 8px;
        }
        .section-header p {
            max-width: 600px;
            margin: 0 auto;
            font-size: 1.05rem;
        }
        .section-header .badge {
            margin-bottom: 12px;
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            display: block;
        }
        .card-body {
            padding: var(--space-md) var(--space-lg) var(--space-lg);
        }
        .card-body .badge {
            margin-bottom: 6px;
        }
        .card-body h3 {
            margin-bottom: 6px;
        }
        .card-body p {
            font-size: 0.95rem;
            margin-bottom: 12px;
        }
        .card-footer {
            padding: var(--space-md) var(--space-lg);
            border-top: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.9rem;
            color: var(--text-weak);
        }

        /* ===== 网格 ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--space-lg);
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-lg);
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-lg);
        }

        /* ===== 列表项 ===== */
        .list-item {
            display: flex;
            align-items: flex-start;
            gap: var(--space-md);
            padding: var(--space-md) 0;
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .list-item:last-child {
            border-bottom: none;
        }
        .list-item:hover {
            padding-left: 8px;
        }
        .list-item .item-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: var(--accent-light);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
        }
        .list-item .item-content h4 {
            font-size: 1rem;
            margin-bottom: 2px;
        }
        .list-item .item-content p {
            font-size: 0.9rem;
            color: var(--text-weak);
            margin-bottom: 0;
        }
        .list-item .item-meta {
            font-size: 0.8rem;
            color: var(--text-weak);
            white-space: nowrap;
            flex-shrink: 0;
        }

        /* ===== 统计数字 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-lg);
        }
        .stat-item {
            text-align: center;
            padding: var(--space-lg);
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .stat-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.1;
            margin-bottom: 4px;
        }
        .stat-label {
            font-size: 0.95rem;
            color: var(--text-weak);
            font-weight: 500;
        }

        /* ===== 流程步骤 ===== */
        .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-lg);
            counter-reset: step;
        }
        .step {
            text-align: center;
            padding: var(--space-lg) var(--space-md);
            position: relative;
        }
        .step::before {
            counter-increment: step;
            content: counter(step);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--accent);
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
            margin: 0 auto 16px;
            box-shadow: 0 6px 20px rgba(232, 73, 29, 0.25);
        }
        .step h4 {
            margin-bottom: 6px;
        }
        .step p {
            font-size: 0.9rem;
            margin-bottom: 0;
        }
        .step+.step::after {
            content: '→';
            position: absolute;
            left: -24px;
            top: 26px;
            font-size: 1.5rem;
            color: var(--border);
            font-weight: 300;
        }
        .step:first-child+.step::after {
            display: none;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            margin-bottom: var(--space-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            padding: var(--space-md) var(--space-lg);
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 600;
            font-size: 1rem;
            color: var(--primary);
            cursor: pointer;
            background: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-question .faq-icon {
            font-size: 1.1rem;
            transition: var(--transition);
            flex-shrink: 0;
            margin-left: 12px;
            color: var(--text-weak);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            color: var(--accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
        }
        .faq-answer-inner {
            padding: 0 var(--space-lg) var(--space-lg);
            font-size: 0.95rem;
            color: var(--text-weak);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            padding: var(--space-2xl) 0;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 {
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto 28px;
            font-size: 1.1rem;
        }
        .cta-section .btn-primary {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
        }
        .cta-section .btn-primary:hover {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: var(--space-2xl) 0 var(--space-lg);
        }
        .site-footer .site-logo {
            color: #fff;
            margin-bottom: 12px;
        }
        .site-footer .site-logo .logo-icon {
            background: var(--accent);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--space-xl);
            margin-bottom: var(--space-xl);
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
            margin-top: 8px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            padding: 4px 0;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: var(--space-lg);
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 8px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* ===== 移动端断点 ===== */
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .step+.step::after {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-lg);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-h: 62px;
            }
            .header-inner {
                padding: 0 var(--space-md);
                gap: var(--space-md);
            }
            .main-nav {
                display: none;
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: var(--space-md);
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                gap: 2px;
                z-index: 999;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .main-nav a.active::after {
                display: none;
            }
            .main-nav a.active {
                background: var(--accent-light);
            }
            .nav-toggle {
                display: block;
            }
            .nav-search {
                display: none;
            }
            .btn-cta-nav {
                padding: 6px 16px;
                font-size: 0.8rem;
            }
            .hero {
                min-height: 320px;
                padding: var(--space-xl) var(--space-md);
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero .hero-search {
                flex-direction: column;
                background: transparent;
                border: none;
                gap: 8px;
                border-radius: 0;
                padding: 0;
            }
            .hero .hero-search input {
                border-radius: 40px;
                background: rgba(255, 255, 255, 0.15);
                padding: 12px 18px;
                border: 1px solid rgba(255, 255, 255, 0.2);
            }
            .hero .hero-search button {
                border-radius: 40px;
                padding: 12px 18px;
            }
            .section {
                padding: var(--space-xl) 0;
            }
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .steps {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-md);
            }
            .stat-number {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-lg);
            }
            .footer-brand p {
                max-width: 100%;
            }
            .container {
                padding: 0 var(--space-md);
            }
            .section-header {
                margin-bottom: var(--space-lg);
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.6rem;
            }
            .hero p {
                font-size: 0.95rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stat-item {
                padding: var(--space-md);
            }
            .stat-number {
                font-size: 1.6rem;
            }
            .btn-lg {
                padding: 12px 24px;
                font-size: 1rem;
            }
            .card-body {
                padding: var(--space-md);
            }
            .faq-question {
                padding: var(--space-md);
                font-size: 0.95rem;
            }
            .faq-answer-inner {
                padding: 0 var(--space-md) var(--space-md);
            }
        }

        /* ===== 辅助工具 ===== */
        .text-center {
            text-align: center;
        }
        .mt-lg {
            margin-top: var(--space-lg);
        }
        .mb-lg {
            margin-bottom: var(--space-lg);
        }
        .gap-md {
            gap: var(--space-md);
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-sm);
        }