/* roulang page: index */
:root {
  --primary: #0E7C6B;
  --primary-dark: #0A5D50;
  --primary-light: #E8F3F0;
  --accent: #D66B2D;
  --accent-dark: #B85A22;
  --bg: #F6F4EF;
  --card-bg: #FFFFFF;
  --dark: #0E3B35;
  --dark-light: #14463F;
  --text: #20302E;
  --text-secondary: #5F7070;
  --text-muted: #94A4A2;
  --border: #E0E6E3;
  --success: #2F9D62;
  --warning: #D97706;
  --error: #C94040;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 8px rgba(22, 46, 42, 0.06);
  --shadow-lg: 0 10px 24px rgba(22, 46, 42, 0.12);
  --sidebar-w: 260px;
  --font-stack: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, -apple-system, sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-stack); color: var(--text); background: var(--bg); line-height: 1.7; font-size: 15px; -webkit-font-smoothing: antialiased; }
a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; }
ul { list-style: none; }
button, input { font-family: inherit; }
:focus-visible { outline: 3px solid rgba(14,124,107,.25); outline-offset: 2px; border-radius: 4px; }

/* ========== 左侧导航 ========== */
.sidebar { position: fixed; top: 0; left: 0; width: var(--sidebar-w); height: 100vh; background: var(--dark); z-index: 1050; display: flex; flex-direction: column; padding: 28px 20px 20px; overflow-y: auto; }
.sidebar-brand { display: flex; align-items: center; gap: 10px; color: #fff; font-size: 18px; font-weight: 800; letter-spacing: .5px; padding: 0 4px 20px; border-bottom: 1px solid rgba(255,255,255,.1); }
.sidebar-brand i { color: var(--accent); font-size: 22px; }
.sidebar-nav { display: flex; flex-direction: column; gap: 6px; margin-top: 24px; flex: 1; }
.sidebar-nav a { display: flex; align-items: center; gap: 12px; color: rgba(255,255,255,.75); padding: 12px 16px; border-radius: var(--radius-sm); font-size: 15px; font-weight: 500; transition: all .25s; min-height: 44px; }
.sidebar-nav a i { width: 20px; text-align: center; font-size: 16px; }
.sidebar-nav a:hover { background: rgba(14,124,107,.35); color: #fff; }
.sidebar-nav a.active { background: var(--primary); color: #fff; box-shadow: inset 4px 0 0 rgba(255,255,255,.45); }
.sidebar-bottom { margin-top: auto; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.08); color: rgba(255,255,255,.4); font-size: 12px; line-height: 1.6; }
.sidebar-bottom p { margin: 0; }

/* ========== 移动端顶栏 ========== */
.mobile-header { display: none; position: fixed; top: 0; left: 0; right: 0; background: var(--dark); z-index: 1060; padding: 12px 20px; align-items: center; justify-content: space-between; box-shadow: 0 2px 12px rgba(0,0,0,.2); }
.mobile-brand { color: #fff; font-size: 17px; font-weight: 800; display: flex; align-items: center; gap: 8px; min-height: 44px; }
.mobile-brand i { color: var(--accent); }
.mobile-toggle { background: transparent; border: none; width: 44px; height: 44px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px; cursor: pointer; border-radius: var(--radius-sm); }
.mobile-toggle span { display: block; width: 22px; height: 2px; background: #fff; border-radius: 2px; transition: transform .3s, opacity .3s; }
.mobile-toggle:hover span:first-child { transform: translateY(-1px); }
.mobile-toggle:hover span:last-child { transform: translateY(1px); }
.mobile-nav { display: none; position: fixed; top: 68px; left: 0; right: 0; background: var(--dark); z-index: 1050; padding: 12px 20px 20px; flex-direction: column; gap: 4px; box-shadow: 0 8px 24px rgba(0,0,0,.25); }
.mobile-nav.open { display: flex; }
.mobile-nav a { display: flex; align-items: center; gap: 12px; color: rgba(255,255,255,.8); padding: 12px 14px; border-radius: var(--radius-sm); font-size: 15px; min-height: 44px; transition: all .2s; }
.mobile-nav a:hover, .mobile-nav a.active { background: var(--primary); color: #fff; }

/* ========== 内容区 ========== */
.content-wrapper { margin-left: var(--sidebar-w); min-height: 100vh; display: flex; flex-direction: column; }
.main-content { flex: 1; }

/* ========== Hero ========== */
.hero { position: relative; padding: 100px 0 90px; background: var(--dark); overflow: hidden; }
.hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: .45; z-index: 0; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(120deg, rgba(14,59,53,.92) 0%, rgba(14,124,107,.65) 100%); z-index: 1; }
.hero-container { position: relative; z-index: 2; }
.hero-title { color: #fff; font-size: 42px; font-weight: 800; line-height: 1.3; margin-bottom: 16px; }
.brand-hl { color: var(--accent); position: relative; display: inline-block; }
.brand-hl::after { content: ''; position: absolute; left: 0; bottom: 0; width: 100%; height: 4px; background: rgba(214,107,45,.5); border-radius: 2px; }
.hero-subtitle { color: rgba(255,255,255,.85); font-size: 22px; font-weight: 600; margin-bottom: 14px; letter-spacing: 1px; }
.hero-desc { color: rgba(255,255,255,.65); font-size: 16px; max-width: 500px; margin-bottom: 28px; line-height: 1.7; }
.hero-buttons .btn { margin-right: 10px; margin-bottom: 8px; }
.hero-visual { position: relative; }
.hero-visual img { border-radius: 20px; box-shadow: 0 20px 50px rgba(0,0,0,.35); background: #E8EFEC; object-fit: cover; }
.hero-stats { display: flex; gap: 36px; margin-top: 40px; }
.hero-stats .stat { display: flex; flex-direction: column; }
.hero-stats .num { color: #fff; font-size: 26px; font-weight: 800; line-height: 1.2; }
.hero-stats .label { color: rgba(255,255,255,.55); font-size: 13px; margin-top: 4px; }

/* ========== 按钮 ========== */
.btn { border-radius: var(--radius-md); font-weight: 600; padding: 12px 26px; transition: all .25s; min-height: 44px; display: inline-flex; align-items: center; justify-content: center; }
.btn-lg { padding: 14px 34px; font-size: 16px; }
.btn:focus-visible { box-shadow: 0 0 0 3px rgba(14,124,107,.25); outline: none; }
.btn-accent { background: var(--accent); color: #fff; border: none; }
.btn-accent:hover { background: var(--accent-dark); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-accent:active { transform: translateY(0); }
.btn-brand { background: var(--primary); color: #fff; border: none; }
.btn-brand:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-outline-brand { background: transparent; border: 2px solid var(--primary); color: var(--primary); }
.btn-outline-brand:hover { background: var(--primary-light); color: var(--primary-dark); }
.btn-outline-light { background: transparent; border: 2px solid rgba(255,255,255,.7); color: #fff; }
.btn-outline-light:hover { background: rgba(255,255,255,.12); color: #fff; border-color: #fff; }

/* ========== Section ========== */
.section { padding: 80px 0; }
.container { max-width: 1200px; padding: 0 24px; }
.section-header { text-align: center; margin-bottom: 48px; }
.section-header h2 { font-size: 28px; font-weight: 800; color: var(--text); margin-bottom: 8px; }
.section-header .section-line { width: 60px; height: 4px; background: var(--primary); border-radius: 2px; margin: 0 auto 14px; }
.section-header p { color: var(--text-secondary); font-size: 15px; max-width: 640px; margin: 0 auto; }

/* ========== 功能卡片 ========== */
.features-section { background: var(--bg); }
.card { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); transition: transform .25s, box-shadow .25s; }
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.feature-card { padding: 32px; height: 100%; }
.feature-card.feature-large { display: flex; flex-direction: column; justify-content: flex-start; background: linear-gradient(145deg, #fff 60%, #F1F8F6 100%); }
.feature-icon { width: 52px; height: 52px; border-radius: 50%; background: rgba(14,124,107,.1); display: flex; align-items: center; justify-content: center; margin-bottom: 20px; color: var(--primary); font-size: 22px; }
.feature-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 10px; color: var(--text); }
.feature-card p { color: var(--text-secondary); font-size: 14px; line-height: 1.7; margin-bottom: 0; }
.feature-points { margin-top: 18px; display: grid; grid-template-columns: 1fr; gap: 10px; }
.feature-points li { display: flex; align-items: center; gap: 10px; color: var(--text-secondary); font-size: 14px; }
.feature-points i { color: var(--primary); font-size: 14px; }
.feature-card.feature-small { padding: 26px 28px; }
.feature-card.feature-small .feature-icon { width: 44px; height: 44px; font-size: 18px; margin-bottom: 14px; }
.feature-card.feature-small h3 { font-size: 17px; }

/* ========== 轮播 ========== */
.showcase-section { background: var(--dark); overflow: hidden; position: relative; }
.showcase-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat; opacity: .12; }
.showcase-section .container { position: relative; z-index: 1; }
.showcase-section .section-header h2 { color: #fff; }
.showcase-section .section-header .section-line { background: var(--accent); }
.showcase-section .section-header p { color: rgba(255,255,255,.6); }
.showcase-frame { max-width: 960px; margin: 0 auto; border-radius: 20px; overflow: hidden; background: #0b2d28; padding: 0; box-shadow: 0 30px 60px rgba(0,0,0,.5); border: 1px solid rgba(255,255,255,.08); }
.carousel-inner { border-radius: 20px; }
.carousel-item img { width: 100%; height: auto; object-fit: cover; background: #16201E; }
.carousel-indicators [data-bs-target] { width: 8px; height: 4px; border-radius: 2px; background: var(--primary); border: none; opacity: .4; transition: all .3s; margin: 0 4px; }
.carousel-indicators .active { width: 36px; opacity: 1; }
.carousel-control-prev, .carousel-control-next { width: 52px; height: 52px; top: 50%; transform: translateY(-50%); bottom: auto; background: rgba(255,255,255,.08); border-radius: 50%; margin: 0 16px; opacity: 1; transition: all .25s; }
.carousel-control-prev:hover, .carousel-control-next:hover { background: var(--primary); }
.carousel-control-prev-icon, .carousel-control-next-icon { display: none; }
.carousel-control-prev::before, .carousel-control-next::before { content: ''; width: 12px; height: 12px; border-top: 3px solid #fff; border-right: 3px solid #fff; position: absolute; }
.carousel-control-prev::before { transform: rotate(-135deg); margin-left: 4px; }
.carousel-control-next::before { transform: rotate(45deg); margin-right: 4px; }

/* ========== 系统要求 ========== */
.requirements-section { background: var(--bg); }
.req-card { padding: 28px; height: 100%; }
.req-title { display: flex; align-items: center; gap: 12px; font-size: 18px; font-weight: 700; margin-bottom: 20px; color: var(--text); }
.req-title i { color: var(--primary); font-size: 24px; }
.req-list { display: flex; flex-direction: column; gap: 8px; }
.req-item { display: flex; justify-content: space-between; align-items: center; background: #F7F5F1; border-radius: var(--radius-sm); padding: 10px 14px; }
.req-label { color: var(--text-muted); font-size: 13px; }
.req-value { color: var(--text); font-size: 14px; font-weight: 600; }

/* ========== 评价墙 ========== */
.testimonials-section { background: #fff; }
.rating-overview { display: flex; flex-direction: column; align-items: center; margin-bottom: 48px; }
.rating-score { font-size: 56px; font-weight: 800; color: var(--text); line-height: 1.1; }
.rating-stars { display: flex; gap: 4px; color: var(--accent); font-size: 22px; margin: 8px 0; }
.rating-label { color: var(--text-muted); font-size: 14px; }
.testimonial-card { padding: 28px 24px; height: 100%; position: relative; }
.testimonial-card.featured { transform: scale(1.02); border-color: rgba(14,124,107,.3); box-shadow: var(--shadow-lg); }
.testimonial-card.featured:hover { transform: scale(1.02) translateY(-2px); }
.quote-icon { color: rgba(14,124,107,.2); font-size: 32px; margin-bottom: 14px; }
.quote-text { color: var(--text); font-size: 14px; line-height: 1.7; margin-bottom: 14px; font-style: italic; }
.quote-stars { color: var(--accent); font-size: 15px; letter-spacing: 2px; margin-bottom: 16px; }
.quote-user { display: flex; align-items: center; gap: 10px; }
.quote-user .avatar { width: 34px; height: 34px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 700; }
.quote-user span { font-size: 14px; color: var(--text-secondary); }

/* ========== CTA横幅 ========== */
.cta-banner { background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 100%); padding: 70px 20px; text-align: center; }
.cta-banner h2 { color: #fff; font-size: 30px; font-weight: 800; margin-bottom: 12px; }
.cta-banner p { color: rgba(255,255,255,.7); font-size: 16px; margin-bottom: 30px; }
.cta-buttons { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }

/* ========== 资讯列表 ========== */
.news-section { background: var(--bg); }
.news-list { display: grid; grid-template-columns: 1fr; gap: 16px; max-width: 900px; margin: 0 auto; }
.news-card { display: flex; flex-direction: column; padding: 24px 28px; border-left: 4px solid var(--primary); }
.news-card:hover { border-left-color: var(--accent); }
.news-badge { display: inline-block; background: var(--primary-light); color: var(--primary); font-size: 12px; font-weight: 600; padding: 4px 12px; border-radius: 100px; margin-bottom: 12px; align-self: flex-start; }
.news-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.news-card h3 a { color: var(--text); transition: color .2s; }
.news-card h3 a:hover { color: var(--primary); }
.news-summary { color: var(--text-secondary); font-size: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 14px; }
.news-meta { display: flex; align-items: center; justify-content: space-between; font-size: 13px; color: var(--text-muted); }
.news-meta time i { margin-right: 4px; }
.news-more { color: var(--primary); font-weight: 600; display: inline-flex; align-items: center; gap: 6px; }
.news-more:hover { color: var(--accent); }
.empty-state { background: #fff; border: 1px dashed var(--border); border-radius: var(--radius-lg); padding: 48px 24px; text-align: center; color: var(--text-muted); font-size: 15px; }

/* ========== FAQ ========== */
.faq-section { background: #fff; }
.faq-wrap { max-width: 860px; margin: 0 auto; }
.accordion-item { border: 1px solid var(--border); border-radius: var(--radius-md) !important; margin-bottom: 12px; overflow: hidden; background: var(--card-bg); box-shadow: var(--shadow-sm); }
.accordion-button { font-weight: 600; color: var(--text); background: var(--card-bg); padding: 16px 20px; font-size: 15px; min-height: 48px; }
.accordion-button:not(.collapsed) { color: var(--primary); background: var(--primary-light); box-shadow: none; }
.accordion-button:focus { box-shadow: 0 0 0 3px rgba(14,124,107,.25); }
.accordion-button::after { background-image: none; content: '+'; font-size: 22px; font-weight: 300; color: var(--primary); display: flex; align-items: center; justify-content: center; width: 24px; height: 24px; transform: rotate(0deg); transition: transform .3s; }
.accordion-button:not(.collapsed)::after { transform: rotate(45deg); color: var(--accent); }
.accordion-body { padding: 16px 20px; color: var(--text-secondary); font-size: 14px; line-height: 1.7; border-top: 1px solid var(--border); }

/* ========== 页脚 ========== */
.site-footer { background: var(--dark); color: rgba(255,255,255,.6); padding: 60px 0 30px; margin-left: 0; }
.footer-brand { color: #fff; font-size: 20px; font-weight: 800; display: flex; align-items: center; gap: 8px; margin-bottom: 16px; }
.footer-brand i { color: var(--accent); }
.footer-desc { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,.5); max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 18px; }
.footer-col a { display: block; color: rgba(255,255,255,.55); font-size: 14px; padding: 5px 0; transition: all .2s; }
.footer-col a:hover { color: #fff; padding-left: 4px; }
.footer-col p { font-size: 14px; color: rgba(255,255,255,.45); margin-bottom: 8px; }
.footer-bottom { margin-top: 40px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.08); text-align: center; font-size: 13px; color: rgba(255,255,255,.35); }

/* ========== 响应式 ========== */
@media (max-width: 991.98px) {
  .sidebar { display: none; }
  .mobile-header { display: flex; }
  .mobile-nav { display: none; }
  .mobile-nav.open { display: flex; }
  .content-wrapper { margin-left: 0; padding-top: 68px; }
  .hero { padding: 60px 0 50px; }
  .hero-title { font-size: 30px; }
  .hero-subtitle { font-size: 18px; }
  .hero-stats { gap: 24px; }
  .hero-stats .num { font-size: 22px; }
  .section { padding: 50px 0; }
  .section-header h2 { font-size: 24px; }
  .feature-card.feature-large { margin-bottom: 16px; }
  .showcase-frame { border-radius: 14px; }
  .cta-banner h2 { font-size: 24px; }
  .news-card { padding: 20px; }
  .site-footer { padding: 40px 0 20px; }
  .footer-col { margin-bottom: 30px; }
}
@media (max-width: 767.98px) {
  .hero-title { font-size: 26px; }
  .hero-subtitle { font-size: 16px; }
  .hero-desc { font-size: 14px; }
  .hero-buttons .btn { width: 100%; margin-right: 0; }
  .hero-visual { margin-top: 30px; }
  .container { padding: 0 16px; }
  .feature-card { padding: 24px; }
  .req-card { padding: 20px; }
  .testimonial-card { padding: 22px; }
  .rating-score { font-size: 44px; }
  .cta-banner { padding: 50px 16px; }
  .cta-buttons .btn { width: 100%; }
  .news-meta { flex-direction: column; align-items: flex-start; gap: 6px; }
}
@media (max-width: 575.98px) {
  .hero { padding: 40px 0 36px; }
  .hero-stats { flex-wrap: wrap; gap: 16px; }
  .section-header { margin-bottom: 32px; }
  .section-header h2 { font-size: 22px; }
  .btn-lg { padding: 12px 22px; font-size: 15px; }
  .req-item { flex-direction: column; align-items: flex-start; gap: 2px; }
  .carousel-control-prev, .carousel-control-next { width: 38px; height: 38px; margin: 0 8px; }
}

/* roulang page: category1 */
:root {
      --primary: #0E7C6B;
      --primary-dark: #0A5F52;
      --primary-light: #E8F3F0;
      --accent: #D66B2D;
      --accent-dark: #B85A22;
      --accent-light: rgba(214, 107, 45, 0.12);
      --bg: #F6F4EF;
      --card-bg: #FFFFFF;
      --deep: #0E3B35;
      --deep-2: #0A2D28;
      --text: #20302E;
      --text-secondary: #5F7070;
      --text-muted: #94A4A2;
      --border: #E0E6E3;
      --status-success: #2F9D62;
      --status-warning: #D97706;
      --status-danger: #C94040;
      --radius-card: 16px;
      --radius-btn: 10px;
      --radius-nav: 8px;
      --radius-input: 8px;
      --radius-figure: 20px;
      --shadow-card: 0 2px 8px rgba(22, 46, 42, 0.06);
      --shadow-hover: 0 10px 24px rgba(22, 46, 42, 0.12);
      --shadow-accent: 0 8px 16px rgba(214, 107, 45, 0.28);
      --space-section: 80px;
      --space-section-mobile: 40px;
      --font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: var(--font-family);
      background: var(--bg);
      color: var(--text);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

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

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

    h1, h2, h3, h4, h5, h6 {
      font-weight: 700;
      line-height: 1.3;
      margin: 0 0 0.5em;
    }

    p {
      margin: 0 0 1em;
    }

    ul, ol {
      padding-left: 1.25em;
    }

    button {
      font-family: inherit;
    }

    /* ===== 左侧竖向导航 ===== */
    .sidebar {
      position: fixed;
      left: 0;
      top: 0;
      bottom: 0;
      width: 240px;
      background: var(--deep);
      display: flex;
      flex-direction: column;
      padding: 24px 16px;
      z-index: 1040;
    }

    .sidebar-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      color: #fff;
      font-size: 18px;
      font-weight: 700;
      padding: 8px 12px 22px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      line-height: 1.4;
    }

    .sidebar-brand i {
      color: var(--accent);
      font-size: 20px;
      flex-shrink: 0;
    }

    .sidebar-nav {
      display: flex;
      flex-direction: column;
      gap: 6px;
      margin-top: 20px;
      flex: 1;
    }

    .sidebar-nav a {
      display: flex;
      align-items: center;
      gap: 10px;
      color: rgba(255, 255, 255, 0.72);
      padding: 12px 14px;
      border-radius: var(--radius-nav);
      font-size: 15px;
      transition: all 0.2s ease;
      border-left: 4px solid transparent;
      min-height: 30px;
    }

    .sidebar-nav a i {
      width: 20px;
      text-align: center;
      font-size: 16px;
    }

    .sidebar-nav a:hover {
      color: #fff;
      background: rgba(255, 255, 255, 0.06);
    }

    .sidebar-nav a.active {
      color: #fff;
      background: rgba(14, 124, 107, 0.4);
      border-left-color: var(--accent);
      font-weight: 600;
    }

    .sidebar-bottom {
      padding: 18px 12px 8px;
      font-size: 12px;
      color: rgba(255, 255, 255, 0.4);
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }

    /* ===== 主内容区 ===== */
    .main-content {
      margin-left: 240px;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

    /* ===== 移动端顶部导航 ===== */
    .mobile-header {
      display: none;
      position: sticky;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1030;
      background: var(--deep);
      padding: 12px 16px;
      align-items: center;
      justify-content: space-between;
      box-shadow: 0 2px 12px rgba(0, 0, 0, 0.16);
    }

    .mobile-logo {
      display: flex;
      align-items: center;
      gap: 8px;
      color: #fff;
      font-size: 16px;
      font-weight: 700;
      min-height: 30px;
    }

    .mobile-logo i {
      color: var(--accent);
    }

    .mobile-toggle {
      width: 44px;
      height: 44px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: rgba(255, 255, 255, 0.08);
      border: none;
      border-radius: var(--radius-btn);
      color: #fff;
      font-size: 19px;
      cursor: pointer;
      transition: background 0.2s;
    }

    .mobile-toggle:hover {
      background: rgba(255, 255, 255, 0.14);
    }

    .mobile-nav {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      bottom: 0;
      width: 280px;
      background: var(--deep);
      z-index: 1050;
      padding: 24px 16px;
      flex-direction: column;
      transform: translateX(-100%);
      transition: transform 0.3s ease;
      box-shadow: 4px 0 20px rgba(0, 0, 0, 0.2);
    }

    .mobile-nav.open {
      transform: translateX(0);
    }

    .mobile-nav .sidebar-bottom {
      margin-top: auto;
    }

    .nav-overlay {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(0, 0, 0, 0.5);
      z-index: 1045;
    }

    .nav-overlay.show {
      display: block;
    }

    /* ===== 页面 H1 区 ===== */
    .page-hero {
      position: relative;
      padding: 76px 0 84px;
      background: linear-gradient(rgba(14, 59, 53, 0.88), rgba(14, 59, 53, 0.78)), url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
      color: #fff;
    }

    .page-hero .hero-inner {
      max-width: 960px;
    }

    .page-hero h1 {
      font-size: 34px;
      font-weight: 800;
      margin-bottom: 8px;
      color: #fff;
    }

    .page-hero h1 .keyword {
      color: #7ED4C4;
    }

    .hero-divider {
      width: 60px;
      height: 4px;
      background: var(--accent);
      border-radius: 2px;
      margin: 22px 0;
    }

    .hero-intro {
      font-size: 16px;
      color: rgba(255, 255, 255, 0.86);
      max-width: 680px;
      line-height: 1.8;
      margin-bottom: 28px;
    }

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

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

    .section-bg {
      background: #fff;
    }

    .section-header {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 38px;
    }

    .section-header .bar {
      width: 4px;
      height: 24px;
      background: var(--primary);
      border-radius: 2px;
      flex-shrink: 0;
    }

    .section-header h2 {
      font-size: 26px;
      font-weight: 800;
      margin: 0;
    }

    .section-header .sub {
      color: var(--text-secondary);
      font-size: 14px;
      margin-left: 4px;
      font-weight: 400;
    }

    /* ===== 按钮 ===== */
    .btn-download-custom {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 13px 28px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 15px;
      border: none;
      transition: all 0.2s ease;
      cursor: pointer;
      min-height: 44px;
    }

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

    .btn-accent:hover {
      background: var(--accent-dark);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: var(--shadow-accent);
    }

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

    .btn-secondary-custom:hover {
      background: var(--primary-dark);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 8px 16px rgba(14, 124, 107, 0.24);
    }

    .btn-outline-light-custom {
      background: transparent;
      color: #fff;
      border: 1.5px solid rgba(255, 255, 255, 0.72);
    }

    .btn-outline-light-custom:hover {
      background: rgba(255, 255, 255, 0.1);
      color: #fff;
      border-color: #fff;
    }

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

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

    .btn:focus-visible,
    .btn-download-custom:focus-visible,
    button:focus-visible,
    a:focus-visible {
      outline: none;
      box-shadow: 0 0 0 3px rgba(14, 124, 107, 0.25);
    }

    /* ===== 内容卡片列表 ===== */
    .guide-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .guide-card {
      background: var(--card-bg);
      border-radius: var(--radius-card);
      border: 1px solid var(--border);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
      display: flex;
      flex-direction: column;
    }

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

    .guide-card.featured {
      grid-column: 1 / -1;
      display: grid;
      grid-template-columns: 1fr 1fr;
    }

    .guide-card .card-cover {
      background: #E8EFEC;
      overflow: hidden;
      position: relative;
    }

    .guide-card:not(.featured) .card-cover {
      aspect-ratio: 16 / 9;
    }

    .guide-card .card-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .guide-card:hover .card-cover img {
      transform: scale(1.04);
    }

    .guide-card .card-body {
      padding: 26px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }

    .card-tag {
      display: inline-block;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
      padding: 4px 14px;
      border-radius: 999px;
      margin-bottom: 14px;
      align-self: flex-start;
    }

    .guide-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text);
    }

    .guide-card p {
      font-size: 14px;
      color: var(--text-secondary);
      margin-bottom: 16px;
      line-height: 1.75;
    }

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

    .feature-list li {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 6px 0;
      font-size: 14px;
      color: var(--text);
    }

    .feature-list li::before {
      content: '';
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--primary);
      flex-shrink: 0;
    }

    .card-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 14px;
      font-weight: 600;
      color: var(--primary);
      margin-top: auto;
      min-height: 44px;
    }

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

    .card-link i {
      font-size: 13px;
    }

    /* ===== 流程步骤 ===== */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .step-card {
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 36px 28px 32px;
      box-shadow: var(--shadow-card);
      text-align: center;
      transition: transform 0.25s, box-shadow 0.25s;
      position: relative;
    }

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

    .step-num {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 19px;
      margin-bottom: 18px;
    }

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

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

    /* ===== FAQ 手风琴 ===== */
    .faq-wrap {
      max-width: 820px;
      margin: 0 auto;
    }

    .accordion-item {
      background: var(--card-bg);
      border: 1px solid var(--border) !important;
      border-radius: 12px !important;
      margin-bottom: 14px;
      overflow: hidden;
      box-shadow: var(--shadow-card);
    }

    .accordion-button {
      background: var(--card-bg) !important;
      color: var(--text) !important;
      font-weight: 600;
      font-size: 16px;
      padding: 0 22px;
      line-height: 54px;
      box-shadow: none !important;
      min-height: 54px;
    }

    .accordion-button:not(.collapsed) {
      color: var(--primary) !important;
    }

    .accordion-button::after {
      content: '+';
      background-image: none !important;
      width: 24px;
      height: 24px;
      font-size: 24px;
      font-weight: 300;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      transition: transform 0.3s ease;
      line-height: 1;
    }

    .accordion-button:not(.collapsed)::after {
      transform: rotate(45deg);
      color: var(--accent);
    }

    .accordion-body {
      padding: 0 22px 20px;
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.75;
    }

    /* ===== CTA 横幅 ===== */
    .cta-banner {
      padding: 80px 0;
      background: linear-gradient(100deg, #0E3B35 0%, #0E7C6B 100%);
      color: #fff;
      text-align: center;
      position: relative;
    }

    .cta-banner::before {
      content: '';
      position: absolute;
      inset: 0;
      background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
    }

    .cta-banner > .container {
      position: relative;
      z-index: 2;
    }

    .cta-banner h2 {
      font-size: 30px;
      font-weight: 800;
      margin-bottom: 12px;
      color: #fff;
    }

    .cta-banner p {
      color: rgba(255, 255, 255, 0.86);
      margin-bottom: 34px;
      font-size: 16px;
    }

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

    /* ===== 页脚 ===== */
    .site-footer {
      background: var(--deep);
      color: rgba(255, 255, 255, 0.7);
      padding: 60px 0 24px;
      margin-top: auto;
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      color: #fff;
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 16px;
    }

    .footer-brand i {
      color: var(--accent);
      font-size: 20px;
    }

    .footer-desc {
      font-size: 14px;
      color: rgba(255, 255, 255, 0.55);
      max-width: 360px;
      line-height: 1.75;
      margin-bottom: 0;
    }

    .footer-col h4 {
      color: #fff;
      font-size: 15px;
      font-weight: 600;
      margin-bottom: 16px;
    }

    .footer-col a {
      display: block;
      color: rgba(255, 255, 255, 0.6);
      font-size: 14px;
      padding: 6px 0;
      transition: color 0.2s, padding-left 0.2s;
    }

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

    .footer-col p {
      font-size: 14px;
      color: rgba(255, 255, 255, 0.55);
      margin-bottom: 6px;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      margin-top: 44px;
      padding-top: 20px;
      text-align: center;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.4);
    }

    .footer-bottom p {
      margin-bottom: 0;
    }

    /* ===== 响应式断点 ===== */
    @media (max-width: 991.98px) {
      .sidebar {
        display: none;
      }

      .main-content {
        margin-left: 0;
      }

      .mobile-header {
        display: flex;
      }

      .mobile-nav {
        display: flex;
      }

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

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

      .steps-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
      }

      .step-card {
        padding: 24px 16px;
      }

      .page-hero {
        padding: 52px 0 60px;
      }
    }

    @media (max-width: 767.98px) {
      .guide-grid {
        grid-template-columns: 1fr;
      }

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

      .guide-card.featured .card-cover {
        aspect-ratio: 16 / 9;
      }

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

      .page-hero h1 {
        font-size: 26px;
      }

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

      .hero-buttons {
        flex-direction: column;
        align-items: stretch;
      }

      .hero-buttons .btn-download-custom {
        width: 100%;
      }

      .cta-banner {
        padding: 48px 0;
      }

      .cta-banner h2 {
        font-size: 24px;
      }

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

      .cta-buttons .btn-download-custom {
        width: 100%;
      }

      .section-header {
        flex-wrap: wrap;
        margin-bottom: 28px;
      }

      .section-header .sub {
        width: 100%;
        margin-left: 18px;
      }

      .section-header h2 {
        font-size: 22px;
      }

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

    @media (max-width: 520px) {
      .footer-col {
        margin-bottom: 28px;
      }

      .footer-bottom {
        margin-top: 28px;
      }

      .guide-card h3 {
        font-size: 17px;
      }

      .accordion-button {
        font-size: 15px;
        line-height: 24px;
        padding: 14px 16px;
        min-height: 52px;
      }

      .accordion-body {
        padding: 0 16px 18px;
      }
    }

/* roulang page: article */
:root {
      --primary: #0E7C6B;
      --primary-dark: #0B6356;
      --primary-light: #E8F3F0;
      --accent: #D66B2D;
      --accent-dark: #B85A22;
      --accent-light: #FDF1E8;
      --bg-page: #F6F4EF;
      --bg-card: #FFFFFF;
      --bg-dark: #0E3B35;
      --text-main: #20302E;
      --text-sub: #5F7070;
      --text-weak: #94A4A2;
      --border: #E0E6E3;
      --success: #2F9D62;
      --warning: #D97706;
      --danger: #C94040;
      --radius-lg: 16px;
      --radius-md: 10px;
      --radius-sm: 8px;
      --shadow-sm: 0 2px 8px rgba(22, 46, 42, 0.06);
      --shadow-lg: 0 10px 24px rgba(22, 46, 42, 0.12);
      --transition: all 0.25s ease;
      --font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
    }

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

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

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

    a:hover {
      color: var(--primary-dark);
      text-decoration: none;
    }

    .container-custom {
      width: 100%;
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* ==================== 侧边导航 ==================== */
    .sidebar {
      position: fixed;
      left: 0;
      top: 0;
      bottom: 0;
      width: 240px;
      background: var(--bg-dark);
      z-index: 1050;
      display: flex;
      flex-direction: column;
      padding: 28px 14px 20px;
      transition: transform 0.3s ease;
    }

    .sidebar-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      color: #fff;
      font-size: 18px;
      font-weight: 700;
      padding: 0 12px 24px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      margin-bottom: 20px;
      line-height: 1.3;
    }

    .sidebar-brand i {
      color: var(--accent);
      font-size: 22px;
      flex-shrink: 0;
    }

    .sidebar-nav {
      display: flex;
      flex-direction: column;
      gap: 6px;
      flex: 1;
    }

    .sidebar-nav a {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 12px 14px;
      border-radius: var(--radius-sm);
      color: rgba(255, 255, 255, 0.78);
      font-size: 15px;
      font-weight: 500;
      position: relative;
      transition: var(--transition);
      min-height: 44px;
    }

    .sidebar-nav a i {
      width: 20px;
      text-align: center;
      font-size: 15px;
      color: rgba(255, 255, 255, 0.5);
      transition: var(--transition);
    }

    .sidebar-nav a:hover {
      background: rgba(255, 255, 255, 0.08);
      color: #fff;
    }

    .sidebar-nav a:hover i {
      color: var(--accent);
    }

    .sidebar-nav a.active {
      background: var(--primary);
      color: #fff;
      box-shadow: 0 4px 12px rgba(14, 124, 107, 0.35);
    }

    .sidebar-nav a.active::before {
      content: "";
      position: absolute;
      left: 0;
      top: 50%;
      transform: translateY(-50%);
      width: 4px;
      height: 22px;
      border-radius: 0 4px 4px 0;
      background: var(--accent);
    }

    .sidebar-nav a.active i {
      color: #fff;
    }

    .sidebar-footer {
      padding: 16px 12px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      color: rgba(255, 255, 255, 0.35);
      font-size: 12px;
      line-height: 1.8;
    }

    .sidebar-overlay {
      position: fixed;
      inset: 0;
      background: rgba(14, 59, 53, 0.5);
      z-index: 1040;
      opacity: 0;
      visibility: hidden;
      transition: var(--transition);
    }

    .sidebar-overlay.show {
      opacity: 1;
      visibility: visible;
    }

    /* ==================== 移动端顶栏 ==================== */
    .mobile-header {
      display: none;
      position: sticky;
      top: 0;
      z-index: 1030;
      background: var(--bg-dark);
      align-items: center;
      justify-content: space-between;
      padding: 14px 20px;
    }

    .mobile-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      color: #fff;
      font-size: 17px;
      font-weight: 700;
    }

    .mobile-brand i {
      color: var(--accent);
      font-size: 20px;
    }

    .mobile-toggle {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 44px;
      height: 44px;
      background: transparent;
      border: 1px solid rgba(255, 255, 255, 0.3);
      border-radius: var(--radius-sm);
      color: #fff;
      font-size: 18px;
      cursor: pointer;
      transition: var(--transition);
    }

    .mobile-toggle:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: var(--accent);
    }

    /* ==================== 主内容区 ==================== */
    .main-wrapper {
      margin-left: 240px;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

    .main-content {
      flex: 1;
    }

    /* ==================== 按钮 ==================== */
    .btn-download-group {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }

    .btn-download {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 13px 30px;
      border-radius: var(--radius-md);
      font-weight: 600;
      font-size: 15px;
      border: none;
      cursor: pointer;
      transition: var(--transition);
      min-height: 48px;
      line-height: 1.2;
    }

    .btn-download-primary {
      background: var(--accent);
      color: #fff;
      box-shadow: 0 4px 14px rgba(214, 107, 45, 0.3);
    }

    .btn-download-primary:hover {
      background: var(--accent-dark);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(214, 107, 45, 0.35);
    }

    .btn-download-secondary {
      background: var(--primary);
      color: #fff;
      box-shadow: 0 4px 14px rgba(14, 124, 107, 0.25);
    }

    .btn-download-secondary:hover {
      background: var(--primary-dark);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(14, 124, 107, 0.3);
    }

    .btn-outline {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 13px 30px;
      border-radius: var(--radius-md);
      font-weight: 600;
      font-size: 15px;
      background: transparent;
      border: 1px solid var(--primary);
      color: var(--primary);
      cursor: pointer;
      transition: var(--transition);
      min-height: 48px;
      line-height: 1.2;
    }

    .btn-outline:hover {
      background: var(--primary-light);
      color: var(--primary-dark);
      border-color: var(--primary-dark);
      transform: translateY(-2px);
    }

    .btn-outline-light {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 13px 30px;
      border-radius: var(--radius-md);
      font-weight: 600;
      font-size: 15px;
      background: transparent;
      border: 1px solid rgba(255, 255, 255, 0.6);
      color: #fff;
      cursor: pointer;
      transition: var(--transition);
      min-height: 48px;
      line-height: 1.2;
    }

    .btn-outline-light:hover {
      background: rgba(255, 255, 255, 0.15);
      color: #fff;
      border-color: #fff;
      transform: translateY(-2px);
    }

    .btn-download:focus-visible,
    .btn-outline:focus-visible,
    .btn-outline-light:focus-visible {
      outline: none;
      box-shadow: 0 0 0 3px rgba(14, 124, 107, 0.25);
    }

    /* ==================== 文章页 Banner ==================== */
    .article-hero {
      position: relative;
      padding: 56px 0 96px;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      background-color: #E8EFEC;
    }

    .article-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background: rgba(14, 59, 53, 0.78);
    }

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

    .breadcrumb-nav {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 6px;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.6);
      margin-bottom: 20px;
    }

    .breadcrumb-nav a {
      color: rgba(255, 255, 255, 0.7);
    }

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

    .breadcrumb-nav .divider {
      color: rgba(255, 255, 255, 0.3);
    }

    .breadcrumb-nav .current {
      color: #fff;
      font-weight: 500;
      max-width: 260px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      display: inline-block;
    }

    /* ==================== 文章卡片 ==================== */
    .article-section {
      padding: 0 24px;
      margin-top: -56px;
      margin-bottom: 80px;
    }

    .article-card {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      padding: 48px 48px 40px;
      max-width: 860px;
      margin: 0 auto;
    }

    .article-header {
      margin-bottom: 36px;
    }

    .article-header h1 {
      font-size: 30px;
      font-weight: 800;
      line-height: 1.4;
      color: var(--text-main);
      margin-bottom: 16px;
      letter-spacing: -0.02em;
    }

    .article-meta {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 8px 20px;
      font-size: 14px;
      color: var(--text-sub);
    }

    .article-meta .meta-cat {
      display: inline-flex;
      align-items: center;
      padding: 4px 14px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 999px;
      font-weight: 600;
      font-size: 13px;
    }

    .article-meta .meta-divider {
      color: var(--border);
      font-size: 14px;
    }

    /* ==================== 正文排版 ==================== */
    .article-body {
      font-size: 16px;
      line-height: 1.8;
      color: var(--text-main);
    }

    .article-body p {
      margin-bottom: 1.2em;
    }

    .article-body h2 {
      font-size: 24px;
      font-weight: 700;
      color: var(--text-main);
      border-left: 4px solid var(--primary);
      padding-left: 14px;
      margin: 2em 0 0.8em;
      line-height: 1.4;
    }

    .article-body h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin: 1.6em 0 0.6em;
      line-height: 1.4;
    }

    .article-body blockquote {
      background: #F1F6F5;
      border-left: 4px solid var(--primary);
      padding: 16px 20px;
      border-radius: 0 10px 10px 0;
      margin: 1.5em 0;
      color: var(--text-sub);
      font-size: 15px;
    }

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

    .article-body img {
      max-width: 100%;
      border-radius: 12px;
      background-color: #E8EFEC;
      object-fit: cover;
      margin: 1.2em 0;
      box-shadow: var(--shadow-sm);
    }

    .article-body figure {
      margin: 1.5em 0;
    }

    .article-body figcaption {
      font-size: 13px;
      color: var(--text-weak);
      text-align: center;
      margin-top: 8px;
    }

    .article-body a {
      color: var(--primary);
      border-bottom: 1px solid transparent;
    }

    .article-body a:hover {
      color: var(--primary-dark);
      border-bottom-color: var(--primary);
      text-decoration: underline;
    }

    .article-body ul,
    .article-body ol {
      margin: 0 0 1.2em;
      padding-left: 24px;
    }

    .article-body ul li,
    .article-body ol li {
      margin-bottom: 0.5em;
    }

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

    .article-body ol li::marker {
      color: var(--primary);
      font-weight: 600;
    }

    .article-body table {
      width: 100%;
      border-collapse: collapse;
      margin: 1.5em 0;
    }

    .article-body th {
      background: var(--primary-light);
      color: var(--text-main);
      font-weight: 600;
      text-align: left;
      padding: 12px 14px;
      border: 1px solid var(--border);
    }

    .article-body td {
      padding: 10px 14px;
      border: 1px solid var(--border);
      color: var(--text-sub);
    }

    .article-body hr {
      border: none;
      border-top: 1px solid var(--border);
      margin: 2em 0;
    }

    /* ==================== 内容未找到 ==================== */
    .not-found-box {
      text-align: center;
      padding: 60px 20px;
    }

    .not-found-box i {
      font-size: 56px;
      color: var(--text-weak);
      margin-bottom: 20px;
      display: inline-block;
    }

    .not-found-box h2 {
      font-size: 24px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .not-found-box p {
      color: var(--text-sub);
      margin-bottom: 28px;
    }

    .not-found-box .btn-outline {
      margin: 0 6px;
    }

    /* ==================== 相关推荐 ==================== */
    .related-section {
      padding: 0 24px 80px;
    }

    .related-section .container {
      max-width: 1280px;
    }

    .section-title {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 24px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 32px;
      letter-spacing: -0.02em;
    }

    .section-title::before {
      content: "";
      width: 4px;
      height: 22px;
      border-radius: 4px;
      background: var(--primary);
    }

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

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

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

    .related-thumb {
      width: 100%;
      height: 180px;
      background-color: #E8EFEC;
      overflow: hidden;
    }

    .related-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

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

    .related-body {
      padding: 20px 20px 18px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }

    .related-body .badge-tag {
      display: inline-flex;
      align-self: flex-start;
      padding: 3px 12px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 999px;
      font-size: 12px;
      font-weight: 600;
      margin-bottom: 12px;
    }

    .related-body h3 {
      font-size: 16px;
      font-weight: 700;
      line-height: 1.5;
      margin-bottom: 10px;
    }

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

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

    .related-body p {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.6;
      margin-bottom: 16px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
      flex: 1;
    }

    .related-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 13px;
      color: var(--text-weak);
      border-top: 1px solid var(--border);
      padding-top: 14px;
    }

    .related-meta a {
      color: var(--primary);
      font-weight: 500;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    .related-meta a:hover {
      color: var(--primary-dark);
      text-decoration: underline;
    }

    /* ==================== CTA 横幅 ==================== */
    .cta-banner {
      background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary) 100%);
      padding: 80px 24px;
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .cta-banner::before {
      content: "";
      position: absolute;
      top: -60px;
      right: -60px;
      width: 240px;
      height: 240px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.05);
    }

    .cta-banner::after {
      content: "";
      position: absolute;
      bottom: -40px;
      left: -40px;
      width: 160px;
      height: 160px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.04);
    }

    .cta-banner .container {
      position: relative;
      z-index: 2;
    }

    .cta-banner h2 {
      font-size: 30px;
      font-weight: 800;
      color: #fff;
      margin-bottom: 12px;
    }

    .cta-banner p {
      color: rgba(255, 255, 255, 0.8);
      font-size: 16px;
      margin-bottom: 32px;
      max-width: 520px;
      margin-left: auto;
      margin-right: auto;
    }

    .cta-banner .btn-download-group {
      justify-content: center;
    }

    /* ==================== 页脚 ==================== */
    .site-footer {
      background: var(--bg-dark);
      color: rgba(255, 255, 255, 0.65);
      padding: 64px 0 0;
    }

    .site-footer .container {
      max-width: 1280px;
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      color: #fff;
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 16px;
    }

    .footer-brand i {
      color: var(--accent);
      font-size: 24px;
    }

    .footer-desc {
      font-size: 14px;
      line-height: 1.8;
      color: rgba(255, 255, 255, 0.6);
      max-width: 360px;
    }

    .footer-col h4 {
      color: #fff;
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 18px;
      position: relative;
      padding-bottom: 10px;
    }

    .footer-col h4::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      width: 32px;
      height: 3px;
      border-radius: 3px;
      background: var(--accent);
    }

    .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-col p {
      font-size: 14px;
      line-height: 2;
      color: rgba(255, 255, 255, 0.5);
      margin-bottom: 0;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding: 20px 0;
      text-align: center;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.35);
      margin-top: 48px;
    }

    .footer-bottom p {
      margin-bottom: 0;
    }

    /* ==================== 响应式 ==================== */
    @media (max-width: 1199.98px) {
      .related-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 18px;
      }
    }

    @media (max-width: 991.98px) {
      .sidebar {
        transform: translateX(-100%);
        box-shadow: 4px 0 24px rgba(0, 0, 0, 0.2);
      }

      .sidebar.open {
        transform: translateX(0);
      }

      .main-wrapper {
        margin-left: 0;
      }

      .mobile-header {
        display: flex;
      }

      .article-card {
        padding: 36px 28px;
      }
    }

    @media (max-width: 767.98px) {
      .article-hero {
        padding: 40px 0 76px;
      }

      .article-card {
        padding: 28px 20px;
        border-radius: 14px;
      }

      .article-header h1 {
        font-size: 24px;
      }

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

      .cta-banner {
        padding: 56px 20px;
      }

      .cta-banner h2 {
        font-size: 24px;
      }

      .btn-download {
        width: 100%;
        justify-content: center;
      }

      .btn-download-group {
        gap: 10px;
      }

      .footer-col {
        margin-bottom: 32px;
      }

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

    @media (max-width: 575.98px) {
      .article-section {
        padding: 0 14px;
        margin-bottom: 56px;
      }

      .related-section {
        padding: 0 14px 56px;
      }

      .cta-banner {
        padding: 44px 16px;
      }

      .article-card {
        padding: 24px 16px;
      }

      .article-meta {
        gap: 6px 12px;
        font-size: 13px;
      }
    }

    @media (prefers-reduced-motion: reduce) {
      * {
        transition: none !important;
        animation: none !important;
      }
    }