/* roulang page: index */
:root {
  --primary: #2E6BE6;
  --primary-dark: #1E55C4;
  --primary-light: #E8F1FD;
  --primary-lighter: #F2F6FC;
  --accent: #F5821F;
  --accent-hover: #D96A0B;
  --success: #1E9E6A;
  --text-main: #1F2A3A;
  --text-sub: #5A6B7C;
  --text-light: #8A9AAB;
  --border: #DCE4EE;
  --bg-page: #F7F9FC;
  --bg-white: #FFFFFF;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-modal: 16px;
  --radius-sm: 6px;
  --shadow-card: 0 6px 20px rgba(46,107,230,0.08);
  --shadow-card-hover: 0 10px 30px rgba(46,107,230,0.14);
  --shadow-modal: 0 20px 60px rgba(46,107,230,0.2);
  --sidebar-w: 220px;
  --header-h: 56px;
  --font: "PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);font-size:16px;line-height:1.7;color:var(--text-main);background:var(--bg-page);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
button{font-family:inherit;border:none;background:none;cursor:pointer}
input,textarea{font-family:inherit}
ul,ol{list-style:none}
/* 布局 */
.site-layout{display:flex;min-height:100vh}
.main-content{flex:1;margin-left:var(--sidebar-w);background:var(--bg-page);min-height:100vh;display:flex;flex-direction:column}
.container{max-width:1200px;margin:0 auto;width:100%}
.section{padding:64px 32px}
.section-header{margin-bottom:40px}
.section-tag{display:inline-block;background:var(--primary-light);color:var(--primary);font-size:13px;font-weight:600;padding:4px 14px;border-radius:30px;margin-bottom:12px}
.section-header h2{font-size:28px;font-weight:700;line-height:1.4;color:var(--text-main);letter-spacing:0.5px}
.section-header p{font-size:15px;color:var(--text-sub);margin-top:10px;max-width:640px}
/* 左侧导航 */
.sidebar{width:var(--sidebar-w);position:fixed;top:0;left:0;bottom:0;background:var(--bg-white);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:20px 14px;z-index:120}
.sidebar .brand{display:flex;align-items:center;gap:10px;padding:6px 8px 18px;border-bottom:1px solid var(--border)}
.brand-icon{width:38px;height:38px;border-radius:9px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:19px;font-weight:700;flex-shrink:0}
.brand-text{font-size:15px;font-weight:700;line-height:1.3;letter-spacing:.4px}
.side-nav{margin-top:20px;flex:1;display:flex;flex-direction:column;gap:4px}
.nav-link{display:flex;align-items:center;gap:11px;height:44px;padding:0 12px;border-radius:8px;font-size:14px;font-weight:500;color:var(--text-sub);transition:all .2s ease}
.nav-link i{width:18px;text-align:center;font-size:15px;color:var(--text-light);transition:color .2s}
.nav-link:hover{background:var(--primary-lighter);color:var(--primary)}
.nav-link:hover i{color:var(--primary)}
.nav-link.active{background:var(--primary-light);color:var(--primary);font-weight:600}
.nav-link.active i{color:var(--primary)}
.side-footer{border-top:1px solid var(--border);padding-top:14px;font-size:12px;color:var(--text-light);line-height:1.7}
.side-footer .sf-item{display:flex;align-items:center;gap:8px;margin-bottom:6px}
.side-footer i{width:14px;text-align:center;color:var(--text-light)}
/* 移动顶栏 */
.mobile-header{display:none;position:fixed;top:0;left:0;right:0;height:var(--header-h);background:#fff;border-bottom:1px solid var(--border);align-items:center;justify-content:space-between;padding:0 16px;z-index:200}
.mobile-header .brand{display:flex;align-items:center;gap:8px;border:none;padding:0}
.mobile-header .brand-icon{width:32px;height:32px;font-size:15px;border-radius:7px}
.mobile-header .brand-text{font-size:14px}
.menu-toggle{width:40px;height:40px;display:flex;align-items:center;justify-content:center;border-radius:8px;color:var(--text-main);transition:background .2s}
.menu-toggle:hover{background:var(--primary-lighter)}
.mobile-drawer{position:fixed;top:var(--header-h);left:0;right:0;bottom:0;background:#fff;z-index:190;padding:20px 16px;display:none;overflow-y:auto}
.mobile-drawer.open{display:block}
.mobile-drawer .drawer-nav{display:flex;flex-direction:column;gap:6px}
.mobile-drawer .nav-link{font-size:16px;height:48px}
.mobile-drawer .drawer-footer{margin-top:32px;padding-top:16px;border-top:1px solid var(--border);font-size:13px;color:var(--text-light)}
/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;transition:all .25s ease;cursor:pointer;white-space:nowrap}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:0 8px 20px rgba(245,130,31,.3)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:transparent;border:1.5px solid var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary-light)}
.btn-lg{padding:15px 36px;font-size:16px}
.btn-block{width:100%}
.btn:focus-visible{outline:3px solid rgba(46,107,230,.35);outline-offset:2px}
/* Hero */
.hero{position:relative;min-height:80vh;display:flex;align-items:center;overflow:hidden;padding:80px 32px}
.hero-bg{position:absolute;top:0;left:0;right:0;bottom:0;background-size:cover;background-position:center;z-index:0}
.hero-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(90deg,rgba(247,249,252,.96) 0%,rgba(247,249,252,.82) 45%,rgba(247,249,252,.55) 100%);z-index:1}
.hero .container{position:relative;z-index:2;display:flex;align-items:center;gap:48px}
.hero-content{flex:1.1;max-width:620px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:var(--primary-light);color:var(--primary);font-size:13px;font-weight:600;padding:6px 16px;border-radius:30px;margin-bottom:20px}
.hero-badge i{font-size:13px}
.hero h1{font-size:38px;font-weight:700;line-height:1.35;letter-spacing:1px;color:var(--text-main);margin-bottom:18px}
.hero h1 .hl{color:var(--primary)}
.hero-sub{font-size:16px;color:var(--text-sub);line-height:1.8;max-width:480px;margin-bottom:30px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:28px}
.hero-meta{display:flex;gap:24px;flex-wrap:wrap}
.hero-meta span{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-sub)}
.hero-meta i{color:var(--primary)}
.hero-visual{flex:0.9;max-width:460px}
.hero-img{width:100%;border-radius:var(--radius-card);box-shadow:var(--shadow-card);object-fit:cover;aspect-ratio:16/10}
/* 方案卡片 */
.solutions-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.solution-card{background:#fff;border-radius:var(--radius-card);padding:28px 24px;box-shadow:var(--shadow-card);border:1px solid #eef2f8;position:relative;transition:transform .25s ease,box-shadow .25s ease}
.solution-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-card-hover)}
.card-icon{width:48px;height:48px;border-radius:10px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:16px}
.solution-card h3{font-size:19px;font-weight:600;margin-bottom:10px;color:var(--text-main)}
.solution-card p{font-size:14px;color:var(--text-sub);line-height:1.7;margin-bottom:16px}
.card-link{font-size:14px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:6px;transition:gap .2s}
.card-link:hover{gap:10px}
/* 数据区 */
.stats-section{background:var(--primary-light);border-top:1px solid #d9e8fb;border-bottom:1px solid #d9e8fb}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-card{background:rgba(255,255,255,.7);border-radius:var(--radius-card);padding:28px 20px;text-align:center;border:1px solid rgba(255,255,255,.9);transition:background .3s}
.stat-card:hover{background:#fff}
.stat-icon{font-size:22px;color:var(--primary);margin-bottom:8px}
.stat-number{display:block;font-size:42px;font-weight:700;color:var(--primary);line-height:1.2;letter-spacing:-.5px}
.stat-card .stat-unit{font-size:17px;font-weight:600;margin-left:2px}
.stat-label{display:block;font-size:13px;color:var(--text-sub);margin-top:8px}
/* 资讯列表 */
.news-list{display:flex;flex-direction:column;gap:16px}
.news-item{background:#fff;border-radius:var(--radius-card);padding:24px 28px;box-shadow:var(--shadow-card);border:1px solid #eef2f8;display:flex;gap:24px;align-items:center;transition:box-shadow .25s,transform .25s}
.news-item:hover{box-shadow:var(--shadow-card-hover);transform:translateY(-2px)}
.news-body{flex:1;min-width:0}
.news-meta{display:flex;gap:12px;align-items:center;margin-bottom:8px}
.news-tag{background:var(--primary-light);color:var(--primary);font-size:12px;font-weight:600;padding:3px 10px;border-radius:20px}
.news-time{font-size:13px;color:var(--text-light);display:flex;align-items:center;gap:5px}
.news-body h3{font-size:17px;font-weight:600;margin-bottom:6px;color:var(--text-main);line-height:1.5}
.news-body h3 a{transition:color .2s}
.news-body h3 a:hover{color:var(--primary)}
.news-body p{font-size:14px;color:var(--text-sub);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-side{flex-shrink:0;display:flex;flex-direction:column;align-items:flex-end;gap:8px;padding-left:20px;border-left:1px solid var(--border)}
.news-side .news-link{font-size:14px;font-weight:600;color:var(--primary)}
/* 空状态 */
.empty-state{background:#fff;border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:56px 24px;text-align:center;border:1px dashed var(--border)}
.empty-icon{width:64px;height:64px;margin:0 auto 16px;border-radius:50%;border:2px solid var(--primary);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:24px}
.empty-state p{font-size:15px;color:var(--text-main);font-weight:500}
.empty-state span{display:block;font-size:13px;color:var(--text-light);margin-top:6px}
/* CTA */
.cta-section{padding:32px 32px 80px}
.cta-card{background:var(--text-main);border-radius:16px;padding:56px 40px;text-align:center;position:relative;overflow:hidden}
.cta-card::before{content:'';position:absolute;top:0;right:0;width:220px;height:220px;background:rgba(46,107,230,.18);border-radius:50%;transform:translate(80px,-80px)}
.cta-card::after{content:'';position:absolute;bottom:0;left:0;width:160px;height:160px;background:rgba(245,130,31,.14);border-radius:50%;transform:translate(-60px,70px)}
.cta-card h2{font-size:28px;font-weight:700;color:#fff;position:relative;z-index:1;margin-bottom:12px}
.cta-card p{font-size:15px;color:rgba(255,255,255,.75);position:relative;z-index:1;margin-bottom:28px;max-width:520px;margin-left:auto;margin-right:auto}
.cta-card .btn{position:relative;z-index:1}
/* FAQ */
.faq-list{max-width:860px;margin:0 auto}
.faq-item{background:#fff;border-radius:var(--radius-card);border:1px solid var(--border);margin-bottom:14px;overflow:hidden;transition:box-shadow .25s}
.faq-item.open{box-shadow:var(--shadow-card);border-color:#cfe0fa}
.faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;padding:14px 24px;font-size:15px;font-weight:600;color:var(--text-main);background:transparent;text-align:left;height:48px;transition:background .2s}
.faq-question:hover{background:var(--primary-lighter)}
.faq-question i{color:var(--text-light);transition:transform .3s;font-size:14px}
.faq-item.open .faq-question i{transform:rotate(180deg)}
.faq-answer{max-height:0;overflow:hidden;background:var(--bg-page);padding:0 24px;transition:max-height .35s ease,padding .35s ease}
.faq-item.open .faq-answer{max-height:280px;padding:16px 24px;border-top:1px solid var(--border)}
.faq-answer p{font-size:14px;color:var(--text-sub);line-height:1.8}
/* 隐私 */
.privacy-section{padding:0 32px 80px}
.privacy-card{background:var(--primary-lighter);border:1px solid #e3ebf5;border-radius:var(--radius-card);padding:28px 32px;display:flex;gap:20px;align-items:flex-start}
.privacy-card .p-icon{width:40px;height:40px;background:#fff;border-radius:10px;color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0;box-shadow:0 2px 8px rgba(46,107,230,.08)}
.privacy-card h3{font-size:16px;font-weight:600;color:var(--text-main);margin-bottom:6px}
.privacy-card p{font-size:13px;color:var(--text-sub);line-height:1.7}
/* 页脚 */
.footer{background:var(--bg-white);border-top:1px solid var(--border);padding:48px 32px 24px}
.footer-inner{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;gap:40px;padding-bottom:32px;border-bottom:1px solid var(--border)}
.footer-brand{max-width:320px}
.footer-brand .f-logo{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--text-main);margin-bottom:10px}
.footer-brand .f-logo i{width:34px;height:34px;border-radius:8px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:16px}
.footer-brand p{font-size:13px;color:var(--text-sub);line-height:1.7}
.footer-nav{display:flex;gap:60px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text-main);margin-bottom:14px}
.footer-col a{display:block;font-size:13px;color:var(--text-sub);padding:5px 0;transition:color .2s,padding-left .2s}
.footer-col a:hover{color:var(--primary);padding-left:4px}
.footer-bottom{max-width:1200px;margin:0 auto;padding-top:20px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px}
.footer-bottom p{font-size:13px;color:var(--text-light)}
.footer-bottom .domain{font-size:12px;color:var(--text-light)}
/* 表单弹层 */
.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(31,42,58,.45);backdrop-filter:blur(4px);z-index:300;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s}
.modal-overlay.show{opacity:1;visibility:visible}
.modal{background:#fff;border-radius:var(--radius-modal);width:480px;max-width:92%;padding:36px 32px;box-shadow:var(--shadow-modal);position:relative;transform:translateY(20px);transition:transform .3s}
.modal-overlay.show .modal{transform:translateY(0)}
.modal-close{position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:50%;background:var(--bg-page);color:var(--text-sub);display:flex;align-items:center;justify-content:center;transition:background .2s,color .2s}
.modal-close:hover{background:var(--primary-light);color:var(--primary)}
.modal-header h3{font-size:22px;font-weight:700;color:var(--text-main);margin-bottom:6px}
.modal-header p{font-size:14px;color:var(--text-sub);margin-bottom:24px}
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:14px;font-weight:600;color:var(--text-main);margin-bottom:8px}
.form-group input,.form-group textarea{width:100%;height:44px;border:1px solid var(--border);border-radius:var(--radius-btn);padding:0 14px;font-size:14px;color:var(--text-main);transition:border-color .2s,box-shadow .2s;background:#fff}
.form-group textarea{height:auto;padding:12px 14px;resize:vertical;min-height:88px}
.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(46,107,230,.12)}
.privacy-tip{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-light);margin-top:12px;justify-content:center}
/* 响应式 */
@media (max-width: 991px){
  .sidebar{display:none}
  .mobile-header{display:flex}
  .main-content{margin-left:0;padding-top:var(--header-h)}
  .section{padding:48px 16px}
  .hero{padding:56px 16px 48px;min-height:auto}
  .hero .container{flex-direction:column;gap:28px}
  .hero-content{max-width:100%}
  .hero h1{font-size:28px}
  .hero-img{aspect-ratio:16/9}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .cta-section{padding:16px 16px 56px}
  .privacy-section{padding:0 16px 56px}
  .footer{padding:40px 16px 20px}
  .footer-inner{flex-direction:column;gap:28px}
}
@media (max-width: 576px){
  .solutions-grid{grid-template-columns:1fr}
  .hero h1{font-size:25px}
  .hero-sub{font-size:15px}
  .hero-actions .btn{width:100%}
  .stats-grid{grid-template-columns:1fr 1fr;gap:12px}
  .stat-number{font-size:30px}
  .news-item{flex-direction:column;align-items:flex-start;padding:20px}
  .news-side{padding-left:0;border-left:none;border-top:1px solid var(--border);padding-top:12px;width:100%;flex-direction:row;justify-content:space-between}
  .faq-question{font-size:14px;padding:12px 16px}
  .faq-item.open .faq-answer{padding:14px 16px}
  .cta-card{padding:40px 20px}
  .cta-card h2{font-size:22px}
  .footer-nav{gap:24px;flex-direction:column}
}

/* roulang page: category1 */
:root {
  --primary: #2E6BE6;
  --primary-light: #E8F1FD;
  --bg: #F7F9FC;
  --accent: #F5821F;
  --success: #1E9E6A;
  --text: #1F2A3A;
  --text-secondary: #5A6B7C;
  --border: #DCE4EE;
  --shadow: 0 6px 20px rgba(46,107,230,0.08);
  --shadow-hover: 0 10px 30px rgba(46,107,230,0.14);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --sidebar-w: 220px;
  --header-h: 56px;
}

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

html { scroll-behavior: smooth; }

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

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, textarea { font-family: inherit; }

.app-shell {
  display: flex;
  min-height: 100vh;
}

/* ---------- Sidebar Navigation ---------- */
.side-nav {
  width: var(--sidebar-w);
  background: #fff;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 28px 16px 20px;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 1000;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 8px 28px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}

.brand-icon {
  width: 44px;
  height: 44px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.brand-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 1px;
  line-height: 1.3;
}

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

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 44px;
  padding: 0 14px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
}

.nav-link i { width: 20px; text-align: center; font-size: 15px; }

.nav-link:hover { background: #F2F6FC; color: var(--primary); }

.nav-link.active {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 700;
}

.side-foot {
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 8px;
}

.side-foot .help-item { display: flex; align-items: center; gap: 8px; color: var(--text-secondary); transition: color 0.2s; }
.side-foot .help-item:hover { color: var(--primary); }

/* ---------- Main Content ---------- */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-w);
  min-width: 0;
}

/* ---------- Mobile Header ---------- */
.mobile-header {
  display: none;
  height: var(--header-h);
  background: #fff;
  border-bottom: 1px solid var(--border);
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  position: sticky;
  top: 0;
  z-index: 1001;
}

.mobile-header .brand-name {
  font-size: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.mobile-header .brand-icon {
  width: 36px;
  height: 36px;
  font-size: 16px;
}

.menu-btn {
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

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

/* Mobile Drawer */
.mobile-drawer {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  bottom: 0;
  background: #fff;
  z-index: 999;
  padding: 24px 20px;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 0.3s ease;
}

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

.mobile-drawer .nav-link {
  font-size: 16px;
  height: 50px;
  border-bottom: 1px solid #F2F6FC;
}

/* ---------- Container ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------- Hero 窄条 ---------- */
.cat-hero {
  background: linear-gradient(to right, rgba(247,249,252,0.97), rgba(247,249,252,0.85)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding: 88px 0 72px;
  border-bottom: 1px solid var(--border);
  position: relative;
}

.cat-hero .cat-badge {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 18px;
  border-radius: 30px;
  letter-spacing: 2px;
  margin-bottom: 20px;
}

.cat-hero h1 {
  font-size: 38px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--text);
  max-width: 720px;
  line-height: 1.35;
}

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

.cat-hero .hero-sub {
  font-size: 17px;
  color: var(--text-secondary);
  margin-top: 20px;
  max-width: 640px;
  line-height: 1.8;
}

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

.section-accent { background: #fff; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 48px;
  gap: 24px;
}

.section-head h2 {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: 1px;
  position: relative;
  padding-left: 18px;
}

.section-head h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  background: var(--accent);
  border-radius: 4px;
}

.section-head .intro {
  color: var(--text-secondary);
  font-size: 15px;
  max-width: 420px;
  text-align: right;
}

/* ---------- 图文介绍区 ---------- */
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.intro-media {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  height: 340px;
}

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

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

.intro-media .media-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 20px;
}

.intro-body h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 18px;
  line-height: 1.4;
}

.intro-body p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.85;
  margin-bottom: 16px;
}

.intro-points {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 24px;
}

.intro-point {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  transition: all 0.25s;
}

.intro-point i { color: var(--success); font-size: 14px; }

.intro-point:hover { border-color: var(--primary); box-shadow: var(--shadow); }

/* ---------- 锚点导航 ---------- */
.anchor-nav {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 18px 0;
  position: sticky;
  top: 0;
  z-index: 500;
}

.anchor-nav .anchor-wrap { display: flex; gap: 12px; flex-wrap: wrap; }

.anchor-btn {
  padding: 8px 22px;
  border: 1px solid var(--border);
  border-radius: 30px;
  font-size: 14px;
  color: var(--text-secondary);
  background: #fff;
  cursor: pointer;
  transition: all 0.2s;
}

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

.anchor-btn i { margin-right: 6px; font-size: 13px; }

/* ---------- 卡片区 ---------- */
.card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

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

.topic-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: var(--primary-light);
}

.topic-card .card-img {
  height: 190px;
  overflow: hidden;
  position: relative;
}

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

.topic-card .card-img .card-tag {
  position: absolute;
  left: 16px;
  bottom: 14px;
  background: rgba(255,255,255,0.92);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 20px;
  letter-spacing: 1px;
}

.topic-card .card-body { padding: 24px 28px 28px; }

.topic-card .card-body h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.45;
}

.topic-card .card-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  transition: gap 0.2s;
}

.card-link i { font-size: 12px; }

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

/* ---------- 数据区 ---------- */
.stats-section {
  background: var(--primary-light);
  padding: 64px 0;
  border-top: 1px solid #D4E5FA;
  border-bottom: 1px solid #D4E5FA;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-item .stat-num {
  font-size: 42px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 1px;
  line-height: 1.2;
}

.stat-item .stat-num em { font-style: normal; color: var(--accent); }

.stat-item .stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 8px;
  letter-spacing: 1px;
}

/* ---------- FAQ ---------- */
.faq-list { max-width: 800px; margin: 0 auto; }

.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 14px;
  overflow: hidden;
  transition: box-shadow 0.2s;
}

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

.faq-item.open { box-shadow: var(--shadow); border-color: var(--primary-light); }

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 54px;
  padding: 0 24px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  user-select: none;
  transition: background 0.2s;
}

.faq-question:hover { background: #F9FBFD; }

.faq-question .faq-arrow {
  font-size: 14px;
  color: var(--text-secondary);
  transition: transform 0.3s;
}

.faq-item.open .faq-arrow { transform: rotate(180deg); color: var(--primary); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
  padding: 0 24px;
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 4px 24px 20px;
}

.faq-answer p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ---------- CTA ---------- */
.cta-section {
  background: #fff;
  padding: 72px 0;
  border-top: 1px solid var(--border);
}

.cta-wrap {
  background: linear-gradient(120deg, var(--primary-light), #F0F6FF);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-wrap h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 12px;
}

.cta-wrap p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.btn { display: inline-flex; align-items: center; gap: 8px; transition: all 0.25s; cursor: pointer; }

.btn-primary {
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: 13px 30px;
  border-radius: var(--radius-sm);
  border: none;
}

.btn-primary:hover { background: #D96A0B; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(245,130,31,0.3); }

.btn-primary:focus { outline: 3px solid rgba(245,130,31,0.3); outline-offset: 2px; }

.btn-secondary {
  background: transparent;
  color: var(--primary);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 30px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--primary);
}

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

.btn-secondary:focus { outline: 3px solid rgba(46,107,230,0.25); outline-offset: 2px; }

.btn-ghost {
  background: transparent;
  color: var(--primary);
  border: none;
  font-size: 14px;
  font-weight: 600;
  padding: 6px 4px;
}

.btn-ghost i { font-size: 12px; transition: transform 0.2s; }
.btn-ghost:hover i { transform: translateX(4px); }

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

/* ---------- 私隐说明 ---------- */
.privacy-note {
  background: var(--bg);
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius);
  padding: 24px 32px;
  margin-top: 40px;
  font-size: 13px;
  color: var(--text-secondary);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.privacy-note i { color: var(--primary); margin-right: 6px; }

/* ---------- Footer ---------- */
.footer {
  background: #fff;
  border-top: 1px solid var(--border);
  margin-left: var(--sidebar-w);
  padding: 48px 0 0;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  justify-content: space-between;
  gap: 48px;
  flex-wrap: wrap;
  padding-bottom: 32px;
}

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

.footer-brand .f-logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.footer-brand .f-logo i { color: var(--primary); font-size: 22px; }

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

.footer-nav { display: flex; gap: 60px; }

.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 10px;
  transition: color 0.2s, padding-left 0.2s;
}

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

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 18px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  max-width: 1200px;
  margin: 0 auto;
}

.footer-bottom p { font-size: 13px; color: var(--text-secondary); }

.footer-bottom .domain { font-size: 13px; color: #A0AEBC; }

/* ---------- 表单弹层 ---------- */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  z-index: 2000;
  align-items: center;
  justify-content: center;
}

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

.modal {
  background: #fff;
  border-radius: var(--radius-lg);
  width: 480px;
  max-width: 92%;
  padding: 40px 36px;
  box-shadow: 0 20px 60px rgba(46,107,230,0.2);
  position: relative;
  animation: modalIn 0.3s ease;
}

@keyframes modalIn {
  from { opacity: 0; transform: translateY(20px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 50%;
  color: var(--text-secondary);
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.modal-close:hover { border-color: var(--accent); color: var(--accent); }

.modal h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: 1px;
}

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

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

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

.form-group input,
.form-group textarea {
  width: 100%;
  height: 44px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0 16px;
  font-size: 14px;
  color: var(--text);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group textarea { height: 100px; padding: 12px 16px; resize: vertical; }

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(46,107,230,0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: #A0AEBC; }

.modal-submit {
  width: 100%;
  margin-top: 10px;
}

.modal-privacy {
  text-align: center;
  font-size: 12px;
  color: #A0AEBC;
  margin-top: 14px;
}

/* ---------- 空状态 ---------- */
.empty-state {
  background: #fff;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 60px 30px;
  text-align: center;
  margin-top: 24px;
}

.empty-state .empty-icon {
  width: 64px;
  height: 64px;
  border: 2px solid var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 24px;
  margin: 0 auto 18px;
}

.empty-state p { font-size: 16px; font-weight: 600; color: var(--text); }
.empty-state span { font-size: 13px; color: var(--text-secondary); }

/* ---------- Responsive ---------- */
@media (max-width: 1200px) {
  .container { padding: 0 24px; }
}

@media (max-width: 991px) {
  .side-nav { display: none; }
  .main-content { margin-left: 0; }
  .mobile-header { display: flex; }
  .mobile-drawer { display: block; transform: translateX(100%); }
  .mobile-drawer.open { transform: translateX(0); }
  .footer { margin-left: 0; }
  .cat-hero { padding: 56px 0 48px; }
  .cat-hero h1 { font-size: 30px; }
  .intro-grid { grid-template-columns: 1fr; gap: 32px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .card-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 32px; }
  .section { padding: 56px 0; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 12px; }
  .section-head .intro { text-align: left; }
}

@media (max-width: 575px) {
  .container { padding: 0 16px; }
  .cat-hero h1 { font-size: 25px; }
  .cat-hero .hero-sub { font-size: 15px; }
  .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
  .cta-wrap { padding: 40px 24px; }
  .cta-wrap h2 { font-size: 22px; }
  .stats-grid { gap: 20px; }
  .stat-item .stat-num { font-size: 32px; }
  .intro-points { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .anchor-btn { font-size: 13px; padding: 7px 16px; }
  .topic-card .card-body { padding: 20px; }
}

@media (min-width: 992px) {
  .mobile-header { display: none; }
  .mobile-drawer { display: none !important; }
}

/* roulang page: article */
:root {
  --primary: #2E6BE6;
  --primary-light: #E8F1FD;
  --primary-hover: #d9e6f9;
  --page-bg: #F7F9FC;
  --cta: #F5821F;
  --cta-hover: #D96A0B;
  --success: #1E9E6A;
  --text: #1F2A3A;
  --text-secondary: #5A6B7C;
  --border: #DCE4EE;
  --card-shadow: 0 6px 20px rgba(46, 107, 230, 0.08);
  --card-shadow-hover: 0 10px 30px rgba(46, 107, 230, 0.14);
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-modal: 16px;
  --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

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

a {
  text-decoration: none;
  color: inherit;
}

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

ul,
ol {
  list-style: none;
}

/* ===== 整体布局 ===== */
.layout {
  display: flex;
  min-height: 100vh;
}

.side-nav {
  width: 220px;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  background: #fff;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 28px 16px 20px;
  z-index: 50;
}

.main-content {
  margin-left: 220px;
  flex: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--page-bg);
}

/* ===== 品牌区 ===== */
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 12px 20px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  margin-bottom: 18px;
  line-height: 1.3;
}

.brand i {
  color: var(--primary);
  font-size: 20px;
  width: 36px;
  height: 36px;
  background: var(--primary-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ===== 侧栏导航 ===== */
.side-nav-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 44px;
  padding: 0 14px;
  border-radius: var(--radius-btn);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: background 0.2s ease, color 0.2s ease;
}

.nav-link i {
  width: 18px;
  text-align: center;
  font-size: 15px;
  flex-shrink: 0;
}

.nav-link:hover {
  background: #F2F6FC;
  color: var(--text);
}

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

.side-nav-foot {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.side-nav-foot .foot-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  color: var(--text-secondary);
}

.side-nav-foot .foot-item i {
  width: 16px;
  color: var(--primary);
}

/* ===== 顶部导航（移动端） ===== */
.top-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  background: #fff;
  border-bottom: 1px solid var(--border);
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  z-index: 100;
}

.top-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
}

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

.menu-toggle {
  width: 40px;
  height: 40px;
  background: var(--primary-light);
  border-radius: var(--radius-btn);
  color: var(--primary);
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease;
}

.menu-toggle:hover {
  background: var(--primary-hover);
}

.menu-toggle:focus-visible {
  outline: 3px solid rgba(46, 107, 230, 0.3);
  outline-offset: 2px;
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 56px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--page-bg);
  padding: 16px;
  z-index: 99;
  overflow-y: auto;
}

.mobile-menu.open {
  display: block;
}

.mobile-menu .nav-link {
  height: 48px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-btn);
  color: var(--text);
  font-size: 15px;
  margin-bottom: 8px;
  padding: 0 16px;
}

.mobile-menu .nav-link.active {
  background: var(--primary-light);
  border-color: transparent;
  color: var(--primary);
  font-weight: 600;
}

/* ===== 文章页容器 ===== */
.article-page {
  padding: 32px 0 48px;
  flex: 1;
}

.article-container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 32px;
  width: 100%;
}

/* ===== 面包屑 ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.breadcrumb a {
  color: var(--primary);
  transition: color 0.2s;
}

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

.breadcrumb .sep {
  color: #B0C0D0;
  font-size: 12px;
}

.breadcrumb .current {
  color: var(--text-secondary);
  max-width: 260px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ===== 主卡片 ===== */
.article-main-card {
  max-width: 820px;
  margin: 0 auto 40px;
  background: #fff;
  border-radius: var(--radius-card);
  box-shadow: var(--card-shadow);
  border: 1px solid rgba(220, 228, 238, 0.55);
  padding: 40px;
}

/* ===== 文章头部 ===== */
.article-cat-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
}

.article-header h1 {
  font-size: 30px;
  line-height: 1.35;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  color: var(--text-secondary);
  font-size: 13px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 28px;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.meta-item i {
  font-size: 14px;
  color: var(--primary);
}

/* ===== 正文阅读 ===== */
.article-body {
  max-width: 720px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text);
  word-wrap: break-word;
}

.article-body h2 {
  font-size: 23px;
  font-weight: 700;
  margin: 32px 0 14px;
  color: var(--text);
  padding-left: 14px;
  border-left: 4px solid var(--primary);
  line-height: 1.4;
}

.article-body h3 {
  font-size: 19px;
  font-weight: 600;
  margin: 24px 0 12px;
  color: var(--text);
}

.article-body p {
  margin: 0 0 18px;
}

.article-body a {
  color: var(--primary);
  border-bottom: 1px solid rgba(46, 107, 230, 0.3);
  transition: border-color 0.2s, color 0.2s;
}

.article-body a:hover {
  color: var(--cta);
  border-color: var(--cta);
}

.article-body blockquote {
  border-left: 4px solid var(--primary);
  background: var(--primary-light);
  padding: 16px 20px;
  border-radius: 0 var(--radius-btn) var(--radius-btn) 0;
  margin: 24px 0;
  color: var(--text-secondary);
  font-size: 15px;
}

.article-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-card);
  margin: 24px 0;
  box-shadow: var(--card-shadow);
}

.article-body ul,
.article-body ol {
  margin: 0 0 18px;
  padding-left: 24px;
}

.article-body ul li,
.article-body ol li {
  margin-bottom: 8px;
}

.article-body ul {
  list-style: disc;
}

.article-body ol {
  list-style: decimal;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}

.article-body table th,
.article-body table td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}

.article-body table th {
  background: var(--primary-light);
  font-weight: 600;
  color: var(--text);
}

.article-body code {
  background: #F2F6FC;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 14px;
  color: var(--primary);
}

/* ===== 文章底部 ===== */
.article-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  transition: color 0.2s, transform 0.2s;
}

.back-link:hover {
  color: var(--cta);
  transform: translateX(-2px);
}

/* ===== 内容未找到 ===== */
.not-found {
  text-align: center;
  padding: 40px 20px;
}

.not-found .nf-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  background: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 26px;
}

.not-found .nf-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.not-found .nf-desc {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 20px;
}

/* ===== 按钮 ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--cta);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary:hover {
  background: var(--cta-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(245, 130, 31, 0.28);
}

.btn-primary:focus-visible {
  outline: 3px solid rgba(245, 130, 31, 0.35);
  outline-offset: 2px;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--primary);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--primary);
  transition: background 0.2s ease, transform 0.2s ease;
}

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

.btn-outline:focus-visible {
  outline: 3px solid rgba(46, 107, 230, 0.3);
  outline-offset: 2px;
}

/* ===== 相关推荐 ===== */
.related-section {
  max-width: 1000px;
  margin: 0 auto 48px;
  padding: 0 32px;
}

.related-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.related-head h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
}

.related-head .related-more {
  font-size: 14px;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s, gap 0.2s;
}

.related-head .related-more:hover {
  color: var(--cta);
  gap: 10px;
}

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

.related-card {
  background: #fff;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(220, 228, 238, 0.4);
}

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

.related-thumb {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--primary-light);
}

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

.related-card:hover .related-thumb img {
  transform: scale(1.05);
}

.related-info {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.related-cat {
  font-size: 12px;
  color: var(--primary);
  font-weight: 600;
  letter-spacing: 0.3px;
}

.related-info h3 {
  font-size: 15px;
  line-height: 1.55;
  font-weight: 600;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-date {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 6px;
}

.related-date i {
  font-size: 12px;
  color: var(--primary);
}

/* ===== CTA 区 ===== */
.cta-section {
  max-width: 1000px;
  margin: 0 auto 48px;
  padding: 56px 48px;
  text-align: center;
  border-radius: var(--radius-card);
  background:
    linear-gradient(rgba(247, 249, 252, 0.94), rgba(247, 249, 252, 0.94)),
    url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  border: 1px solid var(--border);
}

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

.cta-section p {
  color: var(--text-secondary);
  font-size: 15px;
  margin-bottom: 28px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.cta-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== 页脚 ===== */
.footer {
  background: #fff;
  border-top: 1px solid var(--border);
  margin-top: auto;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 44px 32px 28px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
}

.footer-brand .f-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}

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

.footer-brand p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
  max-width: 360px;
}

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

.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 14px;
}

.footer-col a {
  display: block;
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 10px;
  transition: color 0.2s ease;
}

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

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  font-size: 13px;
  color: var(--text-secondary);
}

.footer-bottom .domain {
  color: #A3B4C4;
}

/* ===== 响应式 ===== */
@media (max-width: 991px) {
  .side-nav {
    display: none;
  }

  .top-nav {
    display: flex;
  }

  .main-content {
    margin-left: 0;
    padding-top: 56px;
  }

  .article-page {
    padding: 16px 0 32px;
  }

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

  .article-main-card {
    padding: 28px 22px;
  }

  .related-section {
    padding: 0 16px;
  }
}

@media (max-width: 768px) {
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

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

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 32px 16px 20px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 6px;
    padding: 16px;
    text-align: center;
  }
}

@media (max-width: 576px) {
  .related-grid {
    grid-template-columns: 1fr;
  }

  .article-main-card {
    padding: 24px 18px;
    border-radius: var(--radius-btn);
  }

  .article-header h1 {
    font-size: 21px;
  }

  .article-meta {
    gap: 12px;
    flex-direction: column;
    align-items: flex-start;
  }

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

  .footer-nav {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
    :root {
      --primary: #2E6BE6;
      --primary-light: #E8F1FD;
      --primary-soft: #F2F6FC;
      --accent: #F5821F;
      --accent-hover: #D96A0B;
      --success: #1E9E6A;
      --text: #1F2A3A;
      --text-secondary: #5A6B7C;
      --border: #DCE4EE;
      --bg: #F7F9FC;
      --white: #FFFFFF;
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-modal: 16px;
      --shadow-card: 0 6px 20px rgba(46, 107, 230, 0.08);
      --shadow-card-hover: 0 10px 30px rgba(46, 107, 230, 0.14);
      --shadow-modal: 0 20px 60px rgba(46, 107, 230, 0.2);
      --spacing-lg: 80px;
      --spacing-md: 48px;
      --sidebar-width: 220px;
      --font: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
    }

    /* ===== 基础 Reset ===== */
    *,
    *::before,
    *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: var(--font);
      font-size: 15px;
      line-height: 1.7;
      color: var(--text);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.2s;
    }
    img {
      max-width: 100%;
      display: block;
    }
    button,
    input,
    textarea {
      font-family: inherit;
      font-size: inherit;
      border: none;
      outline: none;
    }
    ul,
    ol {
      list-style: none;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 32px;
    }

    /* ===== 按钮 ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      border-radius: var(--radius-btn);
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.25s ease;
      line-height: 1.4;
      border: 1px solid transparent;
      white-space: nowrap;
    }
    .btn i {
      font-size: 14px;
    }
    .btn-primary {
      background: var(--accent);
      color: var(--white);
      box-shadow: 0 4px 14px rgba(245, 130, 31, 0.25);
    }
    .btn-primary:hover {
      background: var(--accent-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(245, 130, 31, 0.3);
    }
    .btn-primary:focus-visible {
      outline: 3px solid rgba(245, 130, 31, 0.35);
      outline-offset: 2px;
    }
    .btn-outline {
      background: transparent;
      border-color: var(--primary);
      color: var(--primary);
    }
    .btn-outline:hover {
      background: var(--primary-light);
      transform: translateY(-2px);
    }
    .btn-outline:focus-visible {
      outline: 3px solid rgba(46, 107, 230, 0.25);
      outline-offset: 2px;
    }
    .btn-ghost {
      background: transparent;
      color: var(--primary);
      padding: 8px 4px;
      border-radius: 0;
      font-weight: 600;
    }
    .btn-ghost:hover i {
      transform: translateX(4px);
    }
    .btn-ghost i {
      transition: transform 0.25s;
      margin-left: 4px;
    }

    /* ===== 导航系统 ===== */
    .topbar {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      height: 56px;
      background: var(--white);
      border-bottom: 1px solid var(--border);
      z-index: 1000;
      align-items: center;
      justify-content: space-between;
      padding: 0 16px;
      box-shadow: 0 2px 12px rgba(31, 42, 58, 0.05);
    }
    .topbar-logo {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 17px;
      font-weight: 700;
      color: var(--text);
    }
    .topbar-logo i {
      color: var(--primary);
      font-size: 20px;
    }
    .hamburger {
      width: 40px;
      height: 40px;
      border-radius: 8px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: background 0.2s;
    }
    .hamburger:hover {
      background: #d8e6fa;
    }

    .mobile-drawer {
      position: fixed;
      top: 56px;
      left: 0;
      right: 0;
      background: var(--white);
      border-bottom: 1px solid var(--border);
      box-shadow: 0 12px 30px rgba(31, 42, 58, 0.1);
      padding: 16px;
      z-index: 999;
      display: none;
    }
    .mobile-drawer.open {
      display: block;
    }
    .mobile-nav {
      display: flex;
      flex-direction: column;
      gap: 4px;
    }
    .mobile-nav a {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 12px 14px;
      border-radius: var(--radius-btn);
      font-size: 15px;
      font-weight: 500;
      color: var(--text);
      transition: background 0.2s, color 0.2s;
    }
    .mobile-nav a:hover {
      background: var(--primary-light);
      color: var(--primary);
    }
    .mobile-nav a.active {
      background: var(--primary-light);
      color: var(--primary);
      font-weight: 700;
    }
    .mobile-nav a i {
      width: 20px;
      color: var(--primary);
    }

    .sidebar {
      position: fixed;
      top: 0;
      left: 0;
      bottom: 0;
      width: var(--sidebar-width);
      background: var(--white);
      border-right: 1px solid var(--border);
      z-index: 998;
      display: flex;
      flex-direction: column;
      padding: 24px 16px 16px;
    }
    .side-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 8px 8px 20px;
      border-bottom: 1px solid var(--border);
      margin-bottom: 20px;
      font-size: 17px;
      font-weight: 700;
      color: var(--text);
    }
    .side-logo i {
      color: var(--primary);
      font-size: 22px;
    }
    .side-nav {
      flex: 1;
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .side-nav .nav-link {
      display: flex;
      align-items: center;
      gap: 10px;
      height: 44px;
      padding: 0 14px;
      border-radius: var(--radius-btn);
      font-size: 14px;
      font-weight: 500;
      color: var(--text);
      transition: background 0.2s, color 0.2s;
    }
    .side-nav .nav-link:hover {
      background: var(--primary-soft);
      color: var(--primary);
    }
    .side-nav .nav-link.active {
      background: var(--primary-light);
      color: var(--primary);
      font-weight: 700;
      border-left: 3px solid var(--primary);
      padding-left: 11px;
    }
    .side-nav .nav-link i {
      width: 20px;
      text-align: center;
      color: var(--primary);
      font-size: 15px;
    }
    .side-foot {
      border-top: 1px solid var(--border);
      padding-top: 16px;
      display: flex;
      flex-direction: column;
      gap: 6px;
      font-size: 12px;
      color: var(--text-secondary);
    }
    .side-foot span {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .main {
      margin-left: var(--sidebar-width);
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

    /* ===== Hero ===== */
    .page-hero {
      position: relative;
      background-image: linear-gradient(90deg, rgba(247, 249, 252, 0.95) 0%, rgba(247, 249, 252, 0.6) 60%, rgba(247, 249, 252, 0.2) 100%), url('/assets/images/backpic/back-1.png');
      background-size: cover;
      background-position: center;
      min-height: 380px;
      display: flex;
      align-items: center;
      padding: 80px 0 64px;
      border-bottom: 1px solid var(--border);
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 13px;
      font-weight: 700;
      padding: 6px 16px;
      border-radius: 100px;
      margin-bottom: 20px;
      letter-spacing: 1px;
    }
    .hero-badge i {
      font-size: 14px;
    }
    .page-hero h1 {
      font-size: 36px;
      font-weight: 700;
      color: var(--text);
      line-height: 1.3;
      margin-bottom: 16px;
      letter-spacing: 1px;
      max-width: 780px;
    }
    .page-hero h1 .highlight {
      color: var(--primary);
    }
    .hero-sub {
      font-size: 16px;
      color: var(--text-secondary);
      max-width: 640px;
      line-height: 1.7;
    }

    /* ===== 板块通用 ===== */
    .section {
      padding: var(--spacing-lg) 0;
    }
    .section-sm {
      padding: var(--spacing-md) 0;
    }
    .section-head {
      margin-bottom: 40px;
      max-width: 720px;
    }
    .section-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      color: var(--primary);
      background: var(--primary-light);
      padding: 4px 14px;
      border-radius: 100px;
      margin-bottom: 12px;
      letter-spacing: 1px;
    }
    .section-title {
      font-size: 28px;
      font-weight: 700;
      color: var(--text);
      line-height: 1.4;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }
    .section-sub {
      font-size: 15px;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* ===== 锚点导航 ===== */
    .anchor-nav {
      background: var(--white);
      border-bottom: 1px solid var(--border);
      padding: 0;
      position: sticky;
      top: 0;
      z-index: 50;
      box-shadow: 0 2px 10px rgba(31, 42, 58, 0.04);
    }
    .anchor-inner {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      padding: 12px 32px;
      max-width: 1200px;
      margin: 0 auto;
    }
    .anchor-inner a {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 16px;
      border-radius: 100px;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-secondary);
      border: 1px solid var(--border);
      background: var(--white);
      transition: all 0.2s;
    }
    .anchor-inner a:hover,
    .anchor-inner a.active {
      background: var(--primary-light);
      border-color: var(--primary);
      color: var(--primary);
    }

    /* ===== 服务介绍 ===== */
    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .intro-img {
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      position: relative;
      aspect-ratio: 4/3;
    }
    .intro-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .intro-img::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 50%, rgba(31, 42, 58, 0.15));
      pointer-events: none;
    }
    .intro-content {
      padding: 8px 0;
    }
    .intro-content .section-title {
      margin-bottom: 20px;
    }
    .intro-feature-list {
      margin-top: 24px;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .intro-feature-list li {
      display: flex;
      gap: 12px;
      align-items: flex-start;
    }
    .intro-feature-list li i {
      color: var(--success);
      font-size: 16px;
      margin-top: 3px;
      flex-shrink: 0;
    }
    .intro-feature-list li strong {
      display: block;
      font-size: 15px;
      margin-bottom: 2px;
    }
    .intro-feature-list li span {
      font-size: 14px;
      color: var(--text-secondary);
    }

    /* ===== 服务卡片 ===== */
    .service-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .service-card {
      background: var(--white);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      padding: 32px 28px;
      border: 1px solid rgba(220, 228, 238, 0.4);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      position: relative;
      overflow: hidden;
    }
    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-card-hover);
      border-color: rgba(46, 107, 230, 0.2);
    }
    .service-card .card-icon {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 20px;
    }
    .service-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text);
    }
    .service-card p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .service-card .card-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
      transition: gap 0.2s;
    }
    .service-card .card-link:hover {
      gap: 8px;
    }

    /* ===== 流程区 ===== */
    .steps-section {
      background: var(--white);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .step-card {
      position: relative;
      padding: 28px 24px;
      background: var(--bg);
      border-radius: var(--radius-card);
      border: 1px solid var(--border);
      transition: transform 0.3s, box-shadow 0.3s;
    }
    .step-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-card);
    }
    .step-num {
      font-size: 40px;
      font-weight: 800;
      color: var(--primary-light);
      line-height: 1;
      margin-bottom: 16px;
      font-family: "Arial Black", sans-serif;
    }
    .step-card h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .step-card p {
      font-size: 13px;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* ===== FAQ ===== */
    .faq-wrap {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      margin-bottom: 16px;
      overflow: hidden;
      transition: border-color 0.2s, box-shadow 0.2s;
    }
    .faq-item:hover {
      border-color: rgba(46, 107, 230, 0.3);
      box-shadow: var(--shadow-card);
    }
    .faq-q {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 24px;
      min-height: 54px;
      cursor: pointer;
      font-size: 15px;
      font-weight: 600;
      color: var(--text);
    }
    .faq-q i {
      color: var(--primary);
      font-size: 14px;
      transition: transform 0.3s;
      flex-shrink: 0;
    }
    .faq-item.open .faq-q i {
      transform: rotate(45deg);
    }
    .faq-a {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease;
    }
    .faq-a-inner {
      padding: 4px 24px 20px;
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.75;
    }
    .faq-item.open .faq-a {
      max-height: 300px;
    }

    /* ===== CTA ===== */
    .cta-section {
      padding: var(--spacing-lg) 0;
      position: relative;
      overflow: hidden;
    }
    .cta-inner {
      background: var(--primary-light);
      border-radius: 16px;
      padding: 56px 48px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 32px;
      position: relative;
      overflow: hidden;
    }
    .cta-inner::before {
      content: "";
      position: absolute;
      right: -60px;
      top: -60px;
      width: 200px;
      height: 200px;
      background: rgba(46, 107, 230, 0.06);
      border-radius: 50%;
    }
    .cta-text h2 {
      font-size: 26px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text);
    }
    .cta-text p {
      font-size: 15px;
      color: var(--text-secondary);
      max-width: 520px;
    }
    .cta-actions {
      display: flex;
      gap: 12px;
      flex-shrink: 0;
    }

    /* ===== 页脚 ===== */
    .footer {
      background: var(--white);
      border-top: 1px solid var(--border);
      margin-top: auto;
    }
    .footer-inner {
      max-width: 1200px;
      margin: 0 auto;
      padding: 48px 32px 24px;
      display: grid;
      grid-template-columns: 1.4fr 1fr;
      gap: 48px;
    }
    .footer-brand .f-logo {
      font-size: 18px;
      font-weight: 700;
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 12px;
    }
    .footer-brand .f-logo i {
      color: var(--primary);
    }
    .footer-brand p {
      font-size: 14px;
      color: var(--text-secondary);
      max-width: 360px;
      line-height: 1.7;
    }
    .footer-nav {
      display: flex;
      gap: 48px;
      justify-content: flex-end;
    }
    .footer-col h4 {
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 14px;
      color: var(--text);
    }
    .footer-col a {
      display: block;
      font-size: 13px;
      color: var(--text-secondary);
      padding: 5px 0;
      transition: color 0.2s;
    }
    .footer-col a:hover {
      color: var(--primary);
    }
    .footer-bottom {
      border-top: 1px solid var(--border);
      max-width: 1200px;
      margin: 0 auto;
      padding: 16px 32px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 13px;
      color: var(--text-secondary);
    }
    .footer-bottom .domain {
      color: #a5b3c2;
      font-size: 12px;
    }

    /* ===== 表单弹层 ===== */
    .modal-overlay {
      position: fixed;
      inset: 0;
      background: rgba(31, 42, 58, 0.45);
      z-index: 2000;
      display: none;
      align-items: center;
      justify-content: center;
      padding: 16px;
    }
    .modal-overlay.open {
      display: flex;
    }
    .modal-box {
      background: var(--white);
      border-radius: var(--radius-modal);
      box-shadow: var(--shadow-modal);
      width: 480px;
      max-width: 92%;
      padding: 36px 32px 28px;
      position: relative;
      max-height: 90vh;
      overflow-y: auto;
    }
    .modal-close {
      position: absolute;
      top: 16px;
      right: 16px;
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--bg);
      color: var(--text-secondary);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: background 0.2s, color 0.2s;
    }
    .modal-close:hover {
      background: var(--primary-light);
      color: var(--primary);
    }
    .modal-box h3 {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 6px;
    }
    .modal-box .modal-sub {
      font-size: 14px;
      color: var(--text-secondary);
      margin-bottom: 24px;
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-group label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text);
    }
    .form-group label span {
      color: var(--accent);
    }
    .form-input,
    .form-textarea {
      width: 100%;
      height: 44px;
      border: 1px solid var(--border);
      border-radius: var(--radius-btn);
      padding: 0 14px;
      font-size: 14px;
      background: var(--bg);
      transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
    }
    .form-textarea {
      height: 100px;
      padding: 12px 14px;
      resize: vertical;
    }
    .form-input:focus,
    .form-textarea:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(46, 107, 230, 0.15);
      background: var(--white);
    }
    .modal-box .btn {
      width: 100%;
      margin-top: 6px;
    }
    .privacy-note {
      font-size: 12px;
      color: var(--text-secondary);
      text-align: center;
      margin-top: 14px;
      line-height: 1.6;
    }

    /* ===== 响应式 ===== */
    @media (max-width: 991px) {
      .sidebar {
        display: none;
      }
      .topbar {
        display: flex;
      }
      .main {
        margin-left: 0;
        padding-top: 56px;
      }
      .container {
        padding: 0 20px;
      }
      .anchor-inner {
        padding: 10px 20px;
      }
      .footer-inner {
        padding-left: 20px;
        padding-right: 20px;
      }
      .footer-bottom {
        padding-left: 20px;
        padding-right: 20px;
      }
    }

    @media (max-width: 767px) {
      :root {
        --spacing-lg: 48px;
        --spacing-md: 36px;
      }
      .page-hero {
        min-height: 320px;
        padding: 56px 0 48px;
      }
      .page-hero h1 {
        font-size: 26px;
      }
      .section-title {
        font-size: 20px;
      }
      .intro-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }
      .service-grid {
        grid-template-columns: 1fr;
        gap: 16px;
      }
      .steps-grid {
        grid-template-columns: 1fr;
        gap: 16px;
      }
      .cta-inner {
        flex-direction: column;
        padding: 36px 24px;
        text-align: center;
      }
      .cta-actions {
        flex-direction: column;
        width: 100%;
      }
      .cta-actions .btn {
        width: 100%;
      }
      .footer-inner {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .footer-nav {
        justify-content: flex-start;
        gap: 32px;
        flex-wrap: wrap;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 6px;
        text-align: center;
      }
      .faq-q {
        padding: 0 16px;
        min-height: 50px;
        font-size: 14px;
      }
      .faq-a-inner {
        padding: 4px 16px 16px;
      }
    }

    @media (max-width: 520px) {
      .page-hero h1 {
        font-size: 22px;
      }
      .hero-sub {
        font-size: 14px;
      }
      .section {
        padding: 36px 0;
      }
      .service-card {
        padding: 24px 20px;
      }
      .modal-box {
        padding: 28px 20px 24px;
      }
      .btn {
        padding: 12px 20px;
      }
      .topbar-logo {
        font-size: 15px;
      }
    }

/* roulang page: category3 */
:root {
      --primary: #2E6BE6;
      --primary-light: #E8F1FD;
      --primary-lighter: #F2F6FC;
      --accent: #F5821F;
      --accent-hover: #D96A0B;
      --success: #1E9E6A;
      --text: #1F2A3A;
      --text-secondary: #5A6B7C;
      --border: #DCE4EE;
      --bg: #F7F9FC;
      --radius: 12px;
      --radius-sm: 8px;
      --radius-lg: 16px;
      --shadow: 0 6px 20px rgba(46, 107, 230, 0.08);
      --shadow-hover: 0 10px 30px rgba(46, 107, 230, 0.14);
      --shadow-modal: 0 20px 60px rgba(46, 107, 230, 0.2);
      --transition: all .25s ease;
      --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Helvetica Neue', Arial, sans-serif;
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: var(--font-family);
      background: var(--bg);
      color: var(--text);
      line-height: 1.7;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
    }
    img {
      max-width: 100%;
      display: block;
    }
    button {
      font-family: inherit;
      cursor: pointer;
      border: none;
      background: none;
    }
    ul,
    ol {
      list-style: none;
    }
    :focus-visible {
      outline: 3px solid rgba(46, 107, 230, 0.35);
      outline-offset: 2px;
    }

    .layout {
      display: flex;
      min-height: 100vh;
    }
    .sidebar {
      width: 220px;
      position: fixed;
      top: 0;
      left: 0;
      bottom: 0;
      background: #fff;
      border-right: 1px solid var(--border);
      display: flex;
      flex-direction: column;
      z-index: 1000;
    }
    .main-content {
      flex: 1;
      margin-left: 220px;
      min-width: 0;
      display: flex;
      flex-direction: column;
    }
    .container {
      max-width: 1200px;
      width: 100%;
      margin: 0 auto;
      padding: 0 32px;
    }
    .section {
      padding: 80px 0;
    }
    .section-head {
      max-width: 720px;
      margin-bottom: 48px;
    }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
      padding: 6px 16px;
      border-radius: 20px;
      margin-bottom: 16px;
    }
    .section-title {
      font-size: 28px;
      font-weight: 700;
      line-height: 1.4;
      letter-spacing: .5px;
      margin-bottom: 12px;
    }
    .section-subtitle {
      font-size: 15px;
      color: var(--text-secondary);
      line-height: 1.8;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 24px 20px;
      border-bottom: 1px solid var(--border);
    }
    .brand i {
      font-size: 24px;
      color: var(--primary);
    }
    .brand span {
      font-size: 16px;
      font-weight: 700;
      letter-spacing: .5px;
      color: var(--text);
      white-space: nowrap;
    }
    .side-nav {
      flex: 1;
      padding: 20px 12px;
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .nav-link {
      display: flex;
      align-items: center;
      gap: 12px;
      height: 44px;
      padding: 0 14px;
      border-radius: var(--radius-sm);
      font-size: 14px;
      color: var(--text-secondary);
      transition: var(--transition);
      white-space: nowrap;
    }
    .nav-link i {
      width: 18px;
      text-align: center;
      font-size: 15px;
      color: var(--text-secondary);
      transition: var(--transition);
    }
    .nav-link:hover {
      background: var(--primary-lighter);
      color: var(--primary);
    }
    .nav-link:hover i {
      color: var(--primary);
    }
    .nav-link.active {
      background: var(--primary-light);
      color: var(--primary);
      font-weight: 600;
    }
    .nav-link.active i {
      color: var(--primary);
    }
    .side-bottom {
      padding: 16px 20px;
      border-top: 1px solid var(--border);
      font-size: 12px;
      color: var(--text-secondary);
      line-height: 1.9;
    }
    .side-bottom a {
      color: var(--primary);
    }

    .mobile-header {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      height: 56px;
      background: #fff;
      border-bottom: 1px solid var(--border);
      z-index: 1000;
      align-items: center;
      justify-content: space-between;
      padding: 0 16px;
    }
    .mobile-brand {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .mobile-brand i {
      font-size: 20px;
      color: var(--primary);
    }
    .mobile-brand span {
      font-size: 15px;
      font-weight: 700;
    }
    .menu-toggle {
      width: 40px;
      height: 40px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 8px;
      color: var(--text);
      transition: var(--transition);
    }
    .menu-toggle:hover {
      background: var(--primary-light);
    }
    .drawer {
      position: fixed;
      top: 56px;
      left: 0;
      right: 0;
      bottom: 0;
      background: #fff;
      z-index: 999;
      padding: 24px 16px;
      display: none;
      overflow-y: auto;
    }
    .drawer.open {
      display: block;
    }
    .drawer .nav-link {
      height: 48px;
      font-size: 15px;
    }

    .page-banner {
      position: relative;
      padding: 90px 32px;
      background: linear-gradient(90deg, rgba(247, 249, 252, .95) 0%, rgba(247, 249, 252, .65) 55%, rgba(247, 249, 252, .25) 100%), var(--bg) url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    }
    .banner-content {
      max-width: 1200px;
      margin: 0 auto;
      position: relative;
      z-index: 1;
    }
    .banner-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, .88);
      border: 1px solid var(--border);
      border-radius: 20px;
      padding: 6px 16px;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 20px;
      backdrop-filter: blur(4px);
    }
    .banner-title {
      font-size: 36px;
      font-weight: 700;
      line-height: 1.35;
      color: var(--text);
      margin-bottom: 16px;
      letter-spacing: 1px;
    }
    .banner-title em {
      color: var(--primary);
      font-style: normal;
    }
    .banner-subtitle {
      font-size: 16px;
      color: var(--text-secondary);
      max-width: 560px;
      line-height: 1.8;
    }

    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: var(--accent);
      color: #fff;
      border-radius: 8px;
      padding: 12px 28px;
      font-size: 15px;
      font-weight: 600;
      transition: var(--transition);
      border: none;
      box-shadow: 0 4px 14px rgba(245, 130, 31, .25);
    }
    .btn-primary:hover {
      background: var(--accent-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(245, 130, 31, .35);
    }
    .btn-primary:focus-visible {
      outline: 3px solid rgba(245, 130, 31, .4);
      outline-offset: 2px;
    }
    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: transparent;
      color: var(--primary);
      border: 1px solid var(--primary);
      border-radius: 8px;
      padding: 12px 28px;
      font-size: 15px;
      font-weight: 600;
      transition: var(--transition);
    }
    .btn-outline:hover {
      background: var(--primary-light);
      border-color: var(--primary);
    }
    .btn-outline:focus-visible {
      outline: 3px solid rgba(46, 107, 230, .3);
      outline-offset: 2px;
    }

    .split-block {
      display: grid;
      grid-template-columns: 1.1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .split-text h2 {
      font-size: 28px;
      font-weight: 700;
      margin-bottom: 20px;
      line-height: 1.4;
    }
    .split-text p {
      font-size: 15px;
      color: var(--text-secondary);
      line-height: 1.85;
      margin-bottom: 16px;
    }
    .split-image {
      position: relative;
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow);
    }
    .split-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      border-radius: var(--radius);
      aspect-ratio: 4 / 3;
    }

    .stats-row {
      display: flex;
      gap: 24px;
      flex-wrap: wrap;
      margin-top: 48px;
    }
    .stat-item {
      flex: 1;
      min-width: 160px;
      background: #fff;
      border-radius: var(--radius);
      padding: 28px 24px;
      text-align: center;
      box-shadow: var(--shadow);
      border: 1px solid rgba(220, 228, 238, .5);
      transition: var(--transition);
    }
    .stat-item:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
    }
    .stat-num {
      font-size: 38px;
      font-weight: 700;
      color: var(--accent);
      line-height: 1.2;
    }
    .stat-label {
      font-size: 13px;
      color: var(--text-secondary);
      margin-top: 8px;
    }

    .feature-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .feature-card {
      background: #fff;
      border-radius: var(--radius);
      padding: 28px 24px;
      box-shadow: var(--shadow);
      border: 1px solid rgba(220, 228, 238, .5);
      transition: var(--transition);
    }
    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .feature-card:first-child {
      grid-column: 1 / -1;
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 20px;
      align-items: start;
    }
    .feature-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 20px;
      flex-shrink: 0;
    }
    .feature-card h3 {
      font-size: 19px;
      font-weight: 600;
      margin-bottom: 8px;
      margin-top: 16px;
    }
    .feature-card:first-child h3 {
      margin-top: 0;
    }
    .feature-card:first-child .feature-icon {
      width: 56px;
      height: 56px;
      font-size: 24px;
    }
    .feature-card p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.75;
    }

    .topic-section {
      background: #fff;
      border-radius: var(--radius);
      padding: 48px;
      box-shadow: var(--shadow);
      border: 1px solid rgba(220, 228, 238, .5);
    }
    .topic-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-top: 24px;
    }
    .tag-item {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 10px 20px;
      border-radius: 20px;
      background: var(--bg);
      border: 1px solid var(--border);
      font-size: 14px;
      color: var(--text-secondary);
      transition: var(--transition);
    }
    .tag-item:hover {
      background: var(--primary-light);
      color: var(--primary);
      border-color: var(--primary);
      transform: translateY(-2px);
    }
    .tag-item i {
      color: var(--primary);
      font-size: 13px;
    }

    .flow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .flow-step {
      position: relative;
      background: #fff;
      border-radius: var(--radius);
      padding: 32px 24px;
      box-shadow: var(--shadow);
      text-align: center;
      transition: var(--transition);
      border: 1px solid rgba(220, 228, 238, .5);
    }
    .flow-step:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .step-num {
      width: 44px;
      height: 44px;
      margin: 0 auto 16px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      font-weight: 700;
      font-size: 18px;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .flow-step h3 {
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 8px;
    }
    .flow-step p {
      font-size: 13px;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    .faq-wrap {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      margin-bottom: 14px;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item:hover {
      border-color: var(--primary);
    }
    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
      padding: 0 20px;
      height: 48px;
      font-size: 15px;
      font-weight: 600;
      color: var(--text);
      background: #fff;
      transition: var(--transition);
      text-align: left;
    }
    .faq-question i {
      color: var(--text-secondary);
      transition: transform .3s ease;
      font-size: 14px;
      flex-shrink: 0;
      margin-left: 12px;
    }
    .faq-item.open .faq-question {
      background: var(--bg);
      color: var(--primary);
    }
    .faq-item.open .faq-question i {
      transform: rotate(180deg);
      color: var(--primary);
    }
    .faq-answer {
      display: none;
      padding: 4px 16px 16px;
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.8;
      background: var(--bg);
    }
    .faq-item.open .faq-answer {
      display: block;
    }

    .cta-block {
      position: relative;
      background: var(--primary-light);
      border-radius: var(--radius-lg);
      padding: 64px 48px;
      text-align: center;
      overflow: hidden;
      border: 1px solid rgba(46, 107, 230, .15);
    }
    .cta-block::before {
      content: '';
      position: absolute;
      inset: 0;
      background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
      opacity: .12;
    }
    .cta-content {
      position: relative;
      z-index: 1;
    }
    .cta-content h2 {
      font-size: 30px;
      font-weight: 700;
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .cta-content p {
      font-size: 15px;
      color: var(--text-secondary);
      margin-bottom: 28px;
      max-width: 520px;
      margin-left: auto;
      margin-right: auto;
      line-height: 1.8;
    }
    .cta-actions {
      display: flex;
      gap: 16px;
      justify-content: center;
      flex-wrap: wrap;
    }

    .footer {
      background: #fff;
      border-top: 1px solid var(--border);
      padding: 48px 32px 20px;
    }
    .footer-inner {
      max-width: 1200px;
      margin: 0 auto;
      display: flex;
      justify-content: space-between;
      gap: 40px;
      margin-bottom: 32px;
    }
    .footer-brand {
      max-width: 340px;
    }
    .f-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 18px;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 12px;
    }
    .f-logo i {
      color: var(--primary);
      font-size: 22px;
    }
    .footer-brand p {
      font-size: 13px;
      color: var(--text-secondary);
      line-height: 1.8;
    }
    .footer-nav {
      display: flex;
      gap: 64px;
    }
    .footer-col h4 {
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 16px;
      color: var(--text);
    }
    .footer-col a {
      display: block;
      font-size: 13px;
      color: var(--text-secondary);
      padding: 5px 0;
      transition: var(--transition);
    }
    .footer-col a:hover {
      color: var(--primary);
      padding-left: 4px;
    }
    .footer-bottom {
      max-width: 1200px;
      margin: 0 auto;
      padding-top: 20px;
      border-top: 1px solid var(--border);
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
      color: var(--text-secondary);
    }

    @media (max-width: 992px) {
      .sidebar {
        display: none;
      }
      .main-content {
        margin-left: 0;
      }
      .mobile-header {
        display: flex;
      }
      .container {
        padding: 0 20px;
      }
      .section {
        padding: 56px 0;
      }
      .split-block {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .feature-grid {
        grid-template-columns: 1fr;
      }
      .feature-card:first-child {
        grid-column: auto;
        display: block;
      }
      .feature-card:first-child .feature-icon {
        margin-bottom: 8px;
      }
      .feature-card h3 {
        margin-top: 12px;
      }
      .feature-card:first-child h3 {
        margin-top: 12px;
      }
      .flow-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-inner {
        flex-direction: column;
        gap: 24px;
      }
      .footer-nav {
        flex-wrap: wrap;
        gap: 32px;
      }
    }

    @media (max-width: 576px) {
      .container {
        padding: 0 16px;
      }
      .section {
        padding: 48px 0;
      }
      .page-banner {
        padding: 56px 16px;
      }
      .banner-title {
        font-size: 26px;
      }
      .section-title {
        font-size: 22px;
      }
      .feature-grid {
        grid-template-columns: 1fr;
      }
      .flow-steps {
        grid-template-columns: 1fr;
      }
      .btn-primary,
      .btn-outline {
        width: 100%;
      }
      .cta-block {
        padding: 48px 20px;
      }
      .cta-actions {
        flex-direction: column;
      }
      .footer {
        padding: 32px 16px 20px;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
      }
      .topic-section {
        padding: 32px 20px;
      }
    }