/* roulang page: index */
:root{
  --brand:#1F4E9C;
  --brand-dark:#163C79;
  --cyan:#0E9AA7;
  --amber:#E8A13A;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --dark:#12213F;
  --ink:#1B2433;
  --muted:#5A6779;
  --faint:#8695A8;
  --line:#E4EAF3;
  --line-soft:#EEF2F8;
  --r-card:16px;
  --r-sm:14px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-card:0 6px 20px -8px rgba(18,33,63,.14), 0 2px 6px rgba(18,33,63,.05);
  --shadow-hover:0 16px 34px -14px rgba(18,33,63,.24);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4{line-height:1.32;margin:0;letter-spacing:.01em;font-style:normal;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.num{font-variant-numeric:tabular-nums;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
@media (max-width:640px){.container{padding:0 20px;}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(246,248,251,.92);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line-soft);
  transition:box-shadow .2s var(--ease),background .2s var(--ease);
}
.site-header.is-scrolled{background:rgba(255,255,255,.96);box-shadow:0 10px 26px -20px rgba(18,33,63,.45);}
.nav-shell{
  display:flex;align-items:center;gap:18px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:16px;
  padding:10px 14px;
  margin:12px 0;
  box-shadow:var(--shadow-card);
  position:relative;
}
.nav-shell::after{
  content:"";position:absolute;left:14px;right:14px;bottom:-1px;height:1px;
  background:linear-gradient(90deg,rgba(31,78,156,.16),rgba(31,78,156,0));
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:26px;height:26px;border-radius:8px;
  background:linear-gradient(135deg,var(--brand),var(--cyan));
  position:relative;flex:0 0 auto;
}
.brand-mark::after{
  content:"";position:absolute;inset:8px;border-radius:3px;background:#fff;opacity:.92;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.02em;}
.brand-text em{font-style:normal;font-size:12px;color:var(--faint);letter-spacing:.08em;}
.nav-links{display:flex;align-items:center;gap:8px;margin-left:auto;}
.nav-chip{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;
  background:var(--bg);border:1px solid var(--line);border-radius:12px;
  font-size:14px;color:var(--ink);white-space:nowrap;
  transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.nav-chip:hover{background:#fff;border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
.nav-chip.active{background:#fff;border-color:var(--brand);color:var(--brand);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto;}
.nav-text-link{font-size:14px;color:var(--muted);border-bottom:1px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease);}
.nav-text-link:hover{color:var(--brand);border-color:var(--amber);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:#fff;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 抽屉 */
.drawer{
  position:fixed;inset:0;z-index:80;background:#fff;
  opacity:0;pointer-events:none;transform:translateY(-8px);
  transition:opacity .22s var(--ease),transform .22s var(--ease);
  overflow-y:auto;
}
.drawer.open{opacity:1;pointer-events:auto;transform:translateY(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line);}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;cursor:pointer;color:var(--brand);font-size:18px;}
.drawer-body{padding:20px;}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:16px;}
.drawer-chip{
  background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:14px 12px;
  font-size:14px;color:var(--ink);transition:border-color .2s var(--ease),background .2s var(--ease);
}
.drawer-chip:hover,.drawer-chip.active{border-color:var(--brand);color:var(--brand);background:#fff;}

/* ---------- 按钮 ---------- */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  background:var(--brand);color:#fff;font-weight:600;font-size:15px;border:1px solid var(--brand);
  transition:background .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary:hover{background:var(--brand-dark);border-color:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--shadow-hover);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-primary:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,78,156,.3);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  background:#fff;color:var(--brand);font-weight:600;font-size:15px;border:1px solid var(--line);
  transition:border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.btn-ghost:hover{border-color:var(--brand);background:var(--bg);transform:translateY(-1px);}
.btn-ghost:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,78,156,.2);}
.btn-lg{height:50px;padding:0 28px;font-size:16px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px;
  border-bottom:1px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease);
}
.link-arrow i{display:inline-block;transition:transform .2s var(--ease);font-style:normal;}
.link-arrow:hover{border-color:var(--amber);}
.link-arrow:hover i{transform:translateX(3px);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(31,78,156,.1);color:var(--brand);
  font-size:13px;font-weight:600;line-height:1.4;
}
.badge-cyan{background:rgba(14,154,167,.12);color:var(--cyan);}
.tag{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:var(--r-pill);
  background:var(--bg);border:1px solid var(--line);
  font-size:12px;color:var(--muted);
}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:56px 0 72px;}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:right top;background-repeat:no-repeat;
}
.hero-mask{
  position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(255,255,255,.95) 0%,rgba(255,255,255,.88) 46%,rgba(255,255,255,.8) 100%);
}
.hero-glow{
  position:absolute;right:-90px;bottom:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,78,156,.07),rgba(31,78,156,0) 68%);
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;}
.hero h1{font-size:42px;font-weight:700;margin:18px 0 16px;}
.hero-sub{font-size:18px;color:var(--muted);max-width:520px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.trust-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:34px;max-width:560px;}
.trust-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px 14px;
  box-shadow:var(--shadow-card);
}
.trust-item span{display:block;font-size:12px;color:var(--faint);}
.trust-item strong{display:block;font-size:17px;color:var(--brand);font-weight:700;margin-top:2px;}
.hero-visual{position:relative;}
.hero-visual::before{
  content:"";position:absolute;inset:-26px;border-radius:32px;
  background:radial-gradient(circle at 70% 30%,rgba(31,78,156,.08),rgba(31,78,156,0) 70%);
}
.hero-card{
  position:relative;background:#fff;border:1px solid rgba(31,78,156,.12);
  border-radius:16px;padding:10px;box-shadow:var(--shadow-card);
}
.hero-card img{border-radius:12px;aspect-ratio:16/10;width:100%;}

/* ---------- 板块 ---------- */
.section{padding:88px 0;}
.section-soft{background:#fff;}
.section-head{max-width:760px;}
.section-head h2{font-size:29px;font-weight:700;margin-top:14px;}
.section-head p{color:var(--muted);margin-top:12px;}
.h2-bar{
  display:inline-block;width:4px;height:20px;border-radius:3px;
  background:var(--brand);margin-right:10px;vertical-align:-3px;
}

/* ---------- 服务卡 ---------- */
.svc-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;margin-top:44px;}
.svc-main{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.svc-main:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(31,78,156,.35);}
.svc-main img{border-radius:12px;aspect-ratio:16/9;width:100%;margin-bottom:22px;}
.svc-main h3{font-size:20px;font-weight:700;}
.svc-main p{color:var(--muted);margin-top:10px;max-width:640px;}
.svc-points{margin-top:18px;display:grid;gap:10px;}
.svc-points li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--ink);}
.svc-points li::before{
  content:"";flex:0 0 auto;width:8px;height:8px;margin-top:9px;border-radius:2px;background:var(--cyan);
}
.svc-side{display:grid;gap:20px;}
.svc-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
  padding:22px;box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.svc-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(31,78,156,.35);}
.svc-icon{
  width:38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:rgba(31,78,156,.08);color:var(--brand);font-size:18px;font-weight:700;
}
.svc-card h3{font-size:17px;font-weight:700;margin-top:14px;}
.svc-card p{font-size:14px;color:var(--muted);margin-top:8px;}
.svc-foot{margin-top:32px;}

/* ---------- 数据带 ---------- */
.stat-band{
  background:var(--dark);border-radius:20px;padding:46px 40px;color:#fff;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.08);
}
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));}
.stat-item{padding:0 26px;border-left:1px solid rgba(255,255,255,.12);}
.stat-item:first-child{border-left:0;padding-left:0;}
.stat-num{font-size:46px;font-weight:700;line-height:1.15;letter-spacing:-.01em;}
.stat-num small{font-size:17px;font-weight:600;margin-left:4px;}
.stat-label{font-size:14px;color:rgba(255,255,255,.76);margin-top:8px;}

/* ---------- 案例 ---------- */
.case-grid{display:grid;grid-template-columns:.85fr 1.6fr;gap:32px;margin-top:44px;align-items:start;}
.case-label{position:sticky;top:110px;}
.case-label h2{font-size:26px;font-weight:700;margin-top:14px;}
.case-label p{color:var(--muted);margin-top:12px;font-size:15px;}
.case-label .btn-ghost{margin-top:22px;}
.case-cards{display:grid;grid-template-columns:1fr 1fr;gap:22px;}
.case-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow-card);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.case-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(31,78,156,.35);}
.case-media{position:relative;overflow:hidden;}
.case-media img{aspect-ratio:16/10;width:100%;transition:transform .3s var(--ease);}
.case-media::after{
  content:"";position:absolute;inset:0;background:rgba(18,33,63,0);transition:background .25s var(--ease);
}
.case-card:hover .case-media img{transform:scale(1.03);}
.case-card:hover .case-media::after{background:rgba(18,33,63,.12);}
.case-body{padding:20px 22px 24px;}
.case-body h3{font-size:17px;font-weight:700;}
.case-body p{font-size:14px;color:var(--muted);margin-top:8px;}

/* ---------- 流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;margin-top:48px;position:relative;}
.flow-step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px 22px;box-shadow:var(--shadow-card);}
.flow-line{
  position:absolute;top:52px;left:14%;right:14%;height:1px;
  background-image:linear-gradient(90deg,rgba(31,78,156,.35) 0 6px,transparent 6px 14px);
  background-size:14px 1px;background-repeat:repeat-x;
}
.flow-num{
  width:42px;height:42px;border-radius:50%;background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:17px;
  position:relative;z-index:1;box-shadow:0 0 0 6px #fff;
}
.flow-step h3{font-size:17px;font-weight:700;margin-top:18px;}
.flow-step p{font-size:14px;color:var(--muted);margin-top:8px;}

/* ---------- 资讯卡 ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin-top:42px;}
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  display:flex;flex-direction:column;box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(31,78,156,.35);}
.news-cover{position:relative;overflow:hidden;display:block;}
.news-cover img{aspect-ratio:16/10;width:100%;transition:transform .3s var(--ease);}
.news-card:hover .news-cover img{transform:scale(1.03);}
.news-badge{
  position:absolute;left:12px;top:12px;
  background:rgba(255,255,255,.92);color:var(--brand);
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:var(--r-pill);
}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.news-body h3{font-size:17px;font-weight:700;line-height:1.5;}
.news-body h3 a:hover{color:var(--brand);}
.news-body p{font-size:14px;color:var(--muted);margin-top:10px;flex:1;}
.news-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:16px;padding-top:14px;border-top:1px solid var(--line-soft);
  font-size:13px;color:var(--muted);
}
.news-meta a{color:var(--brand);font-weight:600;}
.news-meta a:hover{border-bottom:1px solid var(--amber);}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.empty-card{
  margin-top:42px;border:1px dashed var(--line);border-radius:var(--r-card);
  background:#fff;padding:56px 24px;text-align:center;
}
.empty-icon{
  width:44px;height:44px;margin:0 auto 16px;border-radius:50%;
  border:2px solid var(--brand);display:flex;align-items:center;justify-content:center;color:var(--brand);font-weight:700;
}
.empty-card p{color:var(--muted);}
.empty-card .btn-ghost{margin-top:20px;}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:.9fr 1.9fr;gap:32px;margin-top:44px;align-items:start;}
.faq-side h2{font-size:26px;font-weight:700;margin-top:14px;}
.faq-side p{color:var(--muted);margin-top:12px;font-size:15px;}
.faq-help{
  margin-top:26px;background:var(--bg);border:1px solid rgba(31,78,156,.35);border-radius:var(--r-sm);
  padding:22px;
}
.faq-help strong{display:block;font-size:16px;}
.faq-help span{display:block;font-size:14px;color:var(--muted);margin-top:8px;}
.faq-help .btn-ghost{margin-top:16px;height:42px;padding:0 18px;font-size:14px;}
.faq-list{display:grid;gap:14px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
  overflow:hidden;position:relative;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand);
  transform:scaleY(0);transform-origin:top;transition:transform .22s var(--ease);
}
.faq-item.open{border-color:rgba(31,78,156,.4);box-shadow:var(--shadow-card);}
.faq-item.open::before{transform:scaleY(1);}
.faq-q{
  width:100%;text-align:left;background:none;border:0;cursor:pointer;
  padding:20px 56px 20px 22px;font-size:16px;font-weight:600;color:var(--ink);
  position:relative;transition:color .2s var(--ease);
}
.faq-item.open .faq-q{color:var(--brand);}
.faq-q::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:20px;color:var(--brand);font-weight:400;transition:transform .22s var(--ease);
}
.faq-item.open .faq-q::after{content:"−";transform:translateY(-50%) rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease);}
.faq-a p{padding:0 22px 20px;color:var(--muted);font-size:15px;}

/* ---------- 联系 ---------- */
.contact-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:24px;margin-top:44px;align-items:start;}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:28px;box-shadow:var(--shadow-card);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;height:46px;border:1px solid var(--line);border-radius:var(--r-btn);
  padding:0 14px;background:#fff;color:var(--ink);transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:120px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:var(--faint);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(31,78,156,.2);
}
.info-card{display:grid;gap:16px;}
.info-block{background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);padding:20px;box-shadow:var(--shadow-card);}
.info-block span{display:block;font-size:13px;color:var(--faint);}
.info-block strong{display:block;font-size:16px;margin-top:6px;font-weight:600;}
.info-map{
  border-radius:var(--r-sm);height:150px;border:1px solid var(--line);
  background:linear-gradient(135deg,rgba(31,78,156,.06),rgba(14,154,167,.1));
  display:flex;align-items:center;justify-content:center;color:var(--faint);font-size:13px;
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.78);margin-top:88px;}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding:64px 0 40px;}
.footer-brand strong{display:block;color:#fff;font-size:18px;font-weight:700;}
.footer-brand p{font-size:14px;margin-top:12px;color:rgba(255,255,255,.66);max-width:300px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-col a{display:block;font-size:14px;padding:5px 0;color:rgba(255,255,255,.72);border-bottom:1px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease);}
.footer-col a:hover{color:var(--cyan);border-color:var(--cyan);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a:hover{color:var(--cyan);border-bottom:1px solid var(--cyan);}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-links{display:none;}
  .nav-actions{display:none;}
  .nav-toggle{display:flex;margin-left:auto;}
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .hero h1{font-size:34px;}
  .hero-visual{order:2;}
  .svc-grid{grid-template-columns:1fr;}
  .case-grid{grid-template-columns:1fr;}
  .case-label{position:static;}
  .faq-grid{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr 1fr;gap:28px;}
  .section{padding:64px 0;}
  .site-footer{margin-top:64px;}
}
@media (max-width:768px){
  .news-grid{grid-template-columns:1fr;}
  .case-cards{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr;gap:16px;}
  .flow-line{display:none;}
  .trust-grid{grid-template-columns:1fr 1fr;}
  .stat-grid{grid-template-columns:1fr 1fr;gap:26px 0;}
  .stat-item{border-left:0;border-top:1px solid rgba(255,255,255,.12);padding:22px 0 0;}
  .stat-item:nth-child(-n+2){border-top:0;padding-top:0;}
  .stat-item:nth-child(odd){padding-right:16px;}
  .stat-band{padding:32px 24px;}
  .stat-num{font-size:34px;}
  .section{padding:52px 0;}
  .section-head h2{font-size:23px;}
  .hero h1{font-size:30px;}
  .hero-sub{font-size:16px;}
  .hero{padding:36px 0 48px;}
}
@media (max-width:520px){
  .trust-grid{grid-template-columns:1fr 1fr;}
  .case-cards{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr;padding-top:44px;}
  .form-card{padding:20px;}
  .drawer-grid{grid-template-columns:1fr;}
}

/* roulang page: article */
:root{
  --brand:#1F4E9C;
  --brand-dark:#1A4285;
  --teal:#0E9AA7;
  --amber:#E8A13A;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --ink:#1B2433;
  --ink-2:#5A6779;
  --ink-3:#8695A8;
  --line:#E4EAF3;
  --line-soft:#EEF2F8;
  --deep:#12213F;
  --r-card:16px;
  --r-sm:14px;
  --r-btn:10px;
  --shadow-card:0 6px 20px -8px rgba(18,33,63,.14), 0 2px 6px rgba(18,33,63,.05);
  --shadow-hover:0 16px 34px -14px rgba(18,33,63,.24);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:.01em;line-height:1.32;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0}
:focus-visible{outline:3px solid rgba(31,78,156,.3);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.num{font-variant-numeric:tabular-nums}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(150%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 24px -16px rgba(18,33,63,.35)}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,rgba(31,78,156,0),rgba(31,78,156,.18),rgba(31,78,156,0));
}
.nav-shell{display:flex;align-items:center;gap:20px;height:74px}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
  width:27px;height:27px;border-radius:8px;position:relative;
  background:linear-gradient(135deg,var(--brand),var(--teal));
  box-shadow:0 4px 10px -4px rgba(31,78,156,.55);
}
.brand-mark::after{
  content:"";position:absolute;inset:8px 8px 8px 8px;border-radius:3px;
  background:rgba(255,255,255,.9);
}
.brand-text{display:flex;flex-direction:column;line-height:1}
.brand-text strong{font-size:17px;color:var(--ink);letter-spacing:.02em}
.brand-text em{font-style:normal;font-size:12px;color:var(--ink-3);letter-spacing:.14em;margin-top:3px}
.nav-links{display:flex;align-items:center;gap:10px;flex:1 1 auto;justify-content:center;min-width:0}
.nav-chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 14px;border-radius:12px;
  background:var(--bg);border:1px solid var(--line);
  color:var(--ink-2);font-size:14px;white-space:nowrap;
  transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.nav-chip::before{
  content:"";width:7px;height:7px;border-radius:2px;
  background:rgba(31,78,156,.35);transition:background .2s var(--ease);
}
.nav-chip:hover{background:#fff;border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.nav-chip:hover::before{background:var(--brand)}
.nav-chip.active{background:rgba(31,78,156,.08);border-color:var(--brand);color:var(--brand);font-weight:600}
.nav-chip.active::before{background:var(--brand)}
.nav-actions{display:flex;align-items:center;gap:16px;flex:0 0 auto}
.nav-text-link{font-size:14px;color:var(--ink-2);position:relative;transition:color .2s var(--ease)}
.nav-text-link::after{content:"";position:absolute;left:0;bottom:-3px;width:0;height:1px;background:var(--amber);transition:width .2s var(--ease)}
.nav-text-link:hover{color:var(--brand)}
.nav-text-link:hover::after{width:100%}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;white-space:nowrap;
  transition:background .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 12px 22px -12px rgba(31,78,156,.75)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  background:#fff;border:1px solid var(--line);color:var(--brand);font-size:15px;font-weight:600;white-space:nowrap;
  transition:border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-ghost:hover{border-color:var(--brand);background:var(--bg);transform:translateY(-1px);box-shadow:var(--shadow-card)}
.btn-ghost:active{transform:translateY(0)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--bg);align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s var(--ease)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-drawer{
  position:fixed;left:0;right:0;top:74px;bottom:0;z-index:49;
  background:#fff;padding:24px 20px 40px;overflow-y:auto;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s var(--ease);
}
.nav-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.drawer-title{font-size:13px;color:var(--ink-3);letter-spacing:.12em;margin-bottom:12px}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.drawer-item{
  display:flex;align-items:center;gap:8px;
  background:var(--bg);border:1px solid var(--line);border-radius:12px;
  padding:14px 13px;font-size:14px;color:var(--ink);
}
.drawer-item::before{content:"";width:7px;height:7px;border-radius:2px;background:var(--brand);flex:0 0 auto}
.drawer-cta{margin-top:18px}
.drawer-cta .btn-primary{width:100%}
body.drawer-open{overflow:hidden}

/* ---------- breadcrumb / article head ---------- */
.article-hero{
  position:relative;overflow:hidden;
  background:#fff;border-bottom:1px solid var(--line);
  padding:22px 0 40px;
}
.article-hero::after{
  content:"";position:absolute;right:-90px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle at center,rgba(31,78,156,.07),rgba(31,78,156,0) 70%);
  pointer-events:none;
}
.article-hero::before{
  content:"";position:absolute;left:0;right:0;bottom:0;height:56px;
  background-image:linear-gradient(rgba(31,78,156,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(31,78,156,.05) 1px,transparent 1px);
  background-size:28px 28px;opacity:.5;pointer-events:none;
}
.breadcrumb{position:relative;display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--ink-2);padding:6px 0 22px}
.breadcrumb a{color:var(--ink-2);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--brand)}
.crumb-sep{color:var(--ink-3)}
.crumb-current{max-width:360px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--ink-2)}
.article-head{position:relative;max-width:860px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  background:rgba(31,78,156,.1);color:var(--brand);
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.badge-teal{background:rgba(14,154,167,.12);color:#0B7F8A}
.article-head h1{font-size:42px;line-height:1.28;margin:18px 0 18px;color:var(--ink)}
.meta-row{display:flex;align-items:center;gap:18px;flex-wrap:wrap;font-size:13.5px;color:var(--ink-2)}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--line)}
.meta-item{display:inline-flex;align-items:center;gap:6px}

/* ---------- article body ---------- */
.article-body{padding:52px 0 0}
.prose-wrap{max-width:760px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:20px;padding:44px 46px 40px;box-shadow:var(--shadow-card)}
.prose-cn{font-size:17px;line-height:1.85;color:var(--ink)}
.prose-cn p{margin:0 0 1.1em}
.prose-cn h2{font-size:24px;line-height:1.4;margin:34px 0 12px;padding-left:14px;position:relative;color:var(--ink)}
.prose-cn h2::before{content:"";position:absolute;left:0;top:.3em;width:4px;height:.9em;border-radius:2px;background:var(--brand)}
.prose-cn h3{
  font-size:19px;margin:26px 0 10px;padding-bottom:7px;
  background-image:linear-gradient(to right,rgba(31,78,156,.3),rgba(31,78,156,.3));
  background-repeat:no-repeat;background-size:48px 2px;background-position:left bottom;
}
.prose-cn h4{font-size:17px;margin:20px 0 8px;color:var(--ink)}
.prose-cn ul,.prose-cn ol{padding-left:22px;margin:0 0 1.1em}
.prose-cn ul{list-style:square}
.prose-cn li{margin:6px 0}
.prose-cn li::marker{color:var(--brand)}
.prose-cn blockquote{margin:22px 0;padding:16px 18px;background:var(--bg);border-left:3px solid var(--brand);border-radius:0 12px 12px 0;color:var(--ink-2)}
.prose-cn blockquote p:last-child{margin-bottom:0}
.prose-cn img{max-width:100%;height:auto;border-radius:12px;margin:22px auto}
.prose-cn figure{margin:22px 0}
.prose-cn figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px;line-height:1.7}
.prose-cn table{width:100%;border-collapse:collapse;font-size:15px;display:block;overflow-x:auto;margin:20px 0}
.prose-cn th,.prose-cn td{border:1px solid var(--line);padding:10px 14px;text-align:left;white-space:nowrap;vertical-align:top}
.prose-cn th{background:var(--bg);font-weight:600}
.prose-cn a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.prose-cn a:hover{color:var(--teal)}
.prose-cn code{background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:2px 6px;font-size:.92em}
.prose-cn pre{background:var(--deep);color:#E8EEF9;padding:18px;border-radius:12px;overflow-x:auto;font-size:14px;line-height:1.7}
.prose-cn hr{border:0;border-top:1px solid var(--line);margin:28px 0}
.empty-state{text-align:center;padding:36px 10px}
.empty-state h2{font-size:22px;margin:16px 0 10px;padding:0}
.empty-state h2::before{display:none}
.empty-state p{color:var(--ink-2);margin-bottom:22px}
.empty-icon{
  width:64px;height:64px;border-radius:18px;margin:0 auto;
  display:flex;align-items:center;justify-content:center;
  border:1px dashed var(--line);background:var(--bg);
}
.empty-icon svg{width:30px;height:30px;stroke:var(--brand);fill:none;stroke-width:1.5}

/* ---------- article actions ---------- */
.article-actions{
  max-width:760px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line);padding:24px 0 0;margin-top:44px;
}
.share-group{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-3)}
.icon-btn{
  width:42px;height:42px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;color:var(--ink-2);
  display:inline-flex;align-items:center;justify-content:center;
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.icon-btn:hover{border-color:var(--brand);color:var(--brand);background:var(--bg);transform:translateY(-1px)}
.icon-btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.copy-text{font-size:13px;color:var(--ink-3)}

/* ---------- related ---------- */
.related{padding:84px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.section-head h2{font-size:28px;padding-left:16px;position:relative}
.section-head h2::before{content:"";position:absolute;left:0;top:.28em;width:4px;height:.92em;border-radius:2px;background:var(--brand)}
.section-head .sub{margin-top:10px;font-size:14.5px;color:var(--ink-2);padding-left:16px}
.link-arrow{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:14px;font-weight:600;
}
.link-arrow::after{content:"";position:absolute;left:0;bottom:-3px;width:0;height:1px;background:var(--amber);transition:width .2s var(--ease)}
.link-arrow:hover::after{width:100%}
.link-arrow .arw{transition:transform .2s var(--ease)}
.link-arrow:hover .arw{transform:translateX(3px)}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.info-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(31,78,156,.35)}
.thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:linear-gradient(135deg,rgba(31,78,156,.06),rgba(14,154,167,.1))}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.info-card:hover .thumb img{transform:scale(1.03)}
.thumb .tag{
  position:absolute;left:12px;top:12px;
  background:rgba(255,255,255,.92);color:var(--brand);
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;
}
.info-card .body{display:flex;flex-direction:column;gap:10px;padding:20px 22px 22px;flex:1 1 auto}
.info-card h3{
  font-size:18px;line-height:1.45;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-card .desc{
  font-size:14px;line-height:1.72;color:var(--ink-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-card .foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:var(--ink-3)}
.info-card .foot .read{color:var(--brand);font-weight:600}

/* ---------- cta band ---------- */
.cta-section{padding:84px 0 0}
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;
  padding:42px 44px;border-radius:20px;border:1px solid var(--line);
  background:linear-gradient(135deg,rgba(31,78,156,.07),rgba(14,154,167,.07));
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;bottom:-80px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle at center,rgba(31,78,156,.1),rgba(31,78,156,0) 70%);
}
.cta-band h2{font-size:25px;margin-bottom:10px}
.cta-band p{font-size:15px;color:var(--ink-2);max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative}

/* ---------- footer ---------- */
.site-footer{
  margin-top:92px;padding:64px 0 28px;
  background:var(--deep);color:rgba(255,255,255,.78);
}
.footer-top{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px;
  padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand strong{display:block;color:#fff;font-size:18px;margin-bottom:12px;letter-spacing:.02em}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.7);max-width:320px}
.footer-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}
.footer-tags span{
  font-size:12px;color:rgba(255,255,255,.72);
  border:1px solid rgba(255,255,255,.18);border-radius:999px;padding:4px 11px;
}
.footer-col h4{color:#fff;font-size:14px;letter-spacing:.06em;margin-bottom:14px}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.7);padding:6px 0;transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--teal);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  padding-top:22px;font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .nav-chip{padding:8px 11px;font-size:13.5px}
}
@media (max-width:1024px){
  .container{padding:0 24px}
  .nav-links,.nav-actions{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .nav-shell{height:70px}
  .nav-drawer{top:70px}
  .article-head h1{font-size:34px}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-top{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:768px){
  .prose-wrap{padding:32px 24px 28px;border-radius:16px}
  .prose-cn{font-size:16.5px}
  .prose-cn h2{font-size:22px}
  .section-head h2{font-size:24px}
  .cta-band{padding:32px 26px}
  .cta-band h2{font-size:22px}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .article-hero{padding:16px 0 30px}
  .article-head h1{font-size:30px;margin:14px 0 14px}
  .crumb-current{max-width:200px}
  .article-body{padding:32px 0 0}
  .prose-wrap{padding:24px 18px 22px}
  .related{padding:56px 0 0}
  .related-grid{grid-template-columns:1fr}
  .cta-section{padding:56px 0 0}
  .cta-band{padding:26px 20px;gap:20px}
  .cta-actions{width:100%}
  .cta-actions .btn-primary,.cta-actions .btn-ghost{flex:1 1 auto}
  .footer-top{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .article-actions{align-items:flex-start;flex-direction:column}
  .btn-primary,.btn-ghost{min-height:44px}
}

/* roulang page: category1 */
:root{
  --brand:#1F4E9C;
  --brand-dark:#1A4488;
  --brand-2:#0E9AA7;
  --amber:#E8A13A;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --dark:#12213F;
  --ink:#1B2433;
  --ink-2:#5A6779;
  --ink-3:#8695A8;
  --line:#E4EAF3;
  --line-soft:#EEF2F8;
  --r-lg:20px;
  --r-card:16px;
  --r-sm:14px;
  --r-btn:10px;
  --shadow-card:0 6px 20px -8px rgba(18,33,63,.14), 0 2px 6px rgba(18,33,63,.05);
  --shadow-hover:0 16px 34px -14px rgba(18,33,63,.24);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0}
.site-body{
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(31,78,156,.32);outline-offset:2px;border-radius:8px}
::selection{background:rgba(31,78,156,.16)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:var(--sec) 0}
.section-soft{background:#fff;border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:36px}
.section-head-left{max-width:760px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);letter-spacing:.06em}
.eyebrow::before{content:"";width:20px;height:4px;border-radius:2px;background:var(--brand)}
.section-title{font-size:30px;line-height:1.32;font-weight:700;margin-top:12px;letter-spacing:.01em}
.section-desc{margin-top:12px;font-size:15px;color:var(--ink-2);max-width:720px}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s var(--ease);
}
.site-header.scrolled{box-shadow:0 10px 26px -18px rgba(18,33,63,.34)}
.nav-shell{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:76px;
}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{
  width:26px;height:26px;border-radius:8px;position:relative;
  background:linear-gradient(135deg,var(--brand) 0%,#2C67C4 100%);
  box-shadow:0 4px 10px -4px rgba(31,78,156,.6);
}
.brand-mark::after{
  content:"";position:absolute;inset:8px;border-radius:3px;background:#fff;opacity:.92;
}
.brand-text{display:flex;flex-direction:column;line-height:1.16}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.02em}
.brand-text em{font-style:normal;font-size:12px;color:var(--ink-3);letter-spacing:.08em}
.nav-links{display:flex;align-items:center;gap:8px;flex:1;justify-content:center}
.nav-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 15px;border-radius:12px;
  background:var(--bg);border:1px solid var(--line);
  font-size:14px;color:var(--ink-2);white-space:nowrap;
  transition:transform .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-chip:hover{background:#fff;border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-card)}
.nav-chip.active{background:#fff;border-color:var(--brand);color:var(--brand);font-weight:600;box-shadow:inset 0 0 0 1px rgba(31,78,156,.16)}
.nav-actions{display:flex;align-items:center;gap:16px;flex-shrink:0}
.nav-text-link{font-size:14px;color:var(--ink-2);transition:color .2s var(--ease)}
.nav-text-link:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--bg);
  align-items:center;justify-content:center;gap:4px;flex-direction:column;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);position:relative;transition:transform .2s var(--ease)}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink);
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle.open span{transform:rotate(45deg)}
.nav-toggle.open span::before{transform:rotate(-90deg) translateX(6px);opacity:0}
.nav-toggle.open span::after{transform:rotate(-90deg) translateX(-6px);opacity:0}
.drawer{
  display:none;border-top:1px solid var(--line-soft);
  background:#fff;padding:18px 0 22px;
}
.drawer.open{display:block}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.drawer-card{
  display:flex;align-items:center;gap:10px;
  padding:14px 14px;border-radius:12px;background:var(--bg);
  border:1px solid var(--line);font-size:14px;color:var(--ink-2);min-height:52px;
}
.drawer-card.active{border-color:var(--brand);color:var(--brand);background:#fff;font-weight:600}
.drawer-cta{margin-top:14px;width:100%;justify-content:center;display:inline-flex}

/* ============ 按钮 ============ */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;
  transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
  box-shadow:0 8px 18px -10px rgba(31,78,156,.7);
}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 14px 26px -12px rgba(31,78,156,.72)}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px -10px rgba(31,78,156,.7)}
.btn-secondary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  background:#fff;border:1px solid var(--line);color:var(--brand);font-size:15px;font-weight:600;
  transition:transform .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.btn-secondary:hover{border-color:var(--brand);background:var(--bg);transform:translateY(-1px)}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);
  transition:color .2s var(--ease);
}
.link-arrow span{transition:transform .2s var(--ease)}
.link-arrow:hover span{transform:translateX(3px)}
.link-arrow:hover{text-decoration:underline;text-decoration-color:var(--amber);text-underline-offset:4px;text-decoration-thickness:1px}

/* ============ Hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  background-image:linear-gradient(100deg,rgba(255,255,255,.93) 0%,rgba(255,255,255,.86) 46%,rgba(255,255,255,.74) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:right top;
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;right:-120px;bottom:-140px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,78,156,.09) 0%,rgba(31,78,156,0) 68%);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:44px;align-items:center;padding:64px 0 72px;position:relative;z-index:1}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);flex-wrap:wrap}
.crumbs a{color:var(--ink-2);transition:color .2s var(--ease)}
.crumbs a:hover{color:var(--brand)}
.crumbs span.sep{color:var(--ink-3)}
.crumbs .current{color:var(--ink);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.hero-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:22px 0 18px}
.pill{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 13px;border-radius:999px;font-size:13px;font-weight:600;
  background:rgba(31,78,156,.1);color:var(--brand);
}
.pill-teal{background:rgba(14,154,167,.12);color:#0B7C87}
.pill-amber{background:rgba(232,161,58,.16);color:#9A6516;font-weight:600}
.hero-title{font-size:42px;line-height:1.26;font-weight:700;letter-spacing:.01em;max-width:620px}
.hero-title em{font-style:normal;color:var(--brand)}
.hero-sub{margin-top:18px;font-size:18px;color:var(--ink-2);max-width:560px;line-height:1.75}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-note{margin-top:16px;font-size:13px;color:var(--ink-3)}
.hero-visual{position:relative}
.hero-visual::before{
  content:"";position:absolute;inset:-18px;border-radius:28px;
  background:radial-gradient(circle at 70% 20%,rgba(31,78,156,.10) 0%,rgba(31,78,156,0) 70%);
}
.hero-figure{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid rgba(31,78,156,.18);background:#fff;
  box-shadow:var(--shadow-card);
}
.hero-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-figure figcaption{
  padding:12px 16px;font-size:13px;color:var(--ink-2);
  border-top:1px solid var(--line-soft);background:#fff;
}

/* ============ 数据带 ============ */
.stat-band{background:var(--dark);color:#fff;padding:40px 0}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat-item{padding:6px 24px;border-left:1px solid rgba(255,255,255,.12)}
.stat-item:first-child{border-left:0;padding-left:0}
.stat-num{font-size:46px;font-weight:700;line-height:1.1;letter-spacing:.01em}
.stat-num small{font-size:17px;font-weight:600;margin-left:4px;color:rgba(255,255,255,.78)}
.stat-label{margin-top:8px;font-size:14px;color:rgba(255,255,255,.76)}

/* ============ 功能卡片网格 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.fcard{
  display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.fcard:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--shadow-hover)}
.fcard-media{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(31,78,156,.08),rgba(14,154,167,.12))}
.fcard-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .35s var(--ease)}
.fcard:hover .fcard-media img{transform:scale(1.03)}
.fcard-badge{
  position:absolute;top:12px;left:12px;
  padding:5px 11px;border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(255,255,255,.92);color:var(--brand);
}
.fcard-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.fcard-body h3{font-size:19px;font-weight:700;line-height:1.45}
.fcard-body p{font-size:14px;color:var(--ink-2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;
  font-size:12px;background:var(--bg);border:1px solid var(--line);color:var(--ink-2);
}
.fcard-foot{margin-top:auto;padding-top:6px}

/* ============ 场景卡 ============ */
.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.scene-card{
  display:flex;gap:18px;padding:24px;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.scene-card:hover{transform:translateY(-2px);border-color:rgba(31,78,156,.4);box-shadow:var(--shadow-card)}
.scene-icon{
  flex-shrink:0;width:48px;height:48px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(14,154,167,.1);color:var(--brand-2);
  font-size:19px;font-weight:700;
}
.scene-card h3{font-size:18px;font-weight:700;margin-bottom:8px}
.scene-card p{font-size:14px;color:var(--ink-2);line-height:1.8}

/* ============ 流程 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.step{position:relative;padding-right:16px}
.step-num{
  width:44px;height:44px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid rgba(31,78,156,.28);color:var(--brand);
  font-weight:700;font-size:16px;position:relative;z-index:1;
}
.step::after{
  content:"";position:absolute;top:22px;left:56px;right:8px;height:0;
  border-top:1px dashed rgba(31,78,156,.3);
}
.step:last-child::after{display:none}
.step h3{font-size:17px;font-weight:700;margin-top:18px}
.step p{font-size:14px;color:var(--ink-2);margin-top:8px;line-height:1.8}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:28px;align-items:start}
.faq-aside-card{
  margin-top:20px;padding:22px;border-radius:var(--r-card);
  background:var(--bg);border:1px solid rgba(31,78,156,.22);
}
.faq-aside-card strong{display:block;font-size:15px;margin-bottom:8px}
.faq-aside-card p{font-size:14px;color:var(--ink-2);margin-bottom:16px}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.faq-item.open{border-color:rgba(31,78,156,.4);box-shadow:var(--shadow-card)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--ink);
  border-left:3px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease);
}
.faq-item.open .faq-q{color:var(--brand);border-left-color:var(--brand)}
.faq-sign{
  flex-shrink:0;width:26px;height:26px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  background:var(--bg);color:var(--brand);font-size:16px;line-height:1;
  transition:transform .22s var(--ease),background .22s var(--ease);
}
.faq-item.open .faq-sign{transform:rotate(180deg);background:rgba(31,78,156,.1)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease)}
.faq-a p{padding:0 22px 20px 25px;font-size:14px;color:var(--ink-2);line-height:1.85}

/* ============ CTA 条带 ============ */
.cta-band{
  border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(31,78,156,.08) 0%,rgba(14,154,167,.1) 100%);
  border:1px solid rgba(31,78,156,.18);
  padding:40px;display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band h2{font-size:26px;font-weight:700;line-height:1.35}
.cta-band p{margin-top:10px;font-size:15px;color:var(--ink-2);max-width:600px}
.cta-band-actions{display:flex;gap:14px;flex-wrap:wrap;flex-shrink:0}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:#fff;padding:64px 0 0;margin-top:96px}
.footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px}
.footer-brand strong{font-size:18px;display:block;letter-spacing:.02em}
.footer-brand p{margin-top:12px;font-size:14px;color:rgba(255,255,255,.68);line-height:1.8;max-width:300px}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:16px;color:#fff;letter-spacing:.04em}
.footer-col a{
  display:block;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:11px;
  transition:color .2s var(--ease);
}
.footer-col a:hover{color:var(--brand-2);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;color:rgba(255,255,255,.6);flex-wrap:wrap;
}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:var(--brand-2)}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  :root{--sec:64px}
  .container{padding:0 24px}
  .nav-links,.nav-actions{display:none}
  .nav-toggle{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:32px;padding:48px 0 56px}
  .hero-title{font-size:34px}
  .hero-sub{font-size:17px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr 1fr;gap:28px}
  .step:nth-child(2n)::after{display:none}
  .faq-grid{grid-template-columns:1fr;gap:32px}
  .footer-top{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
  .footer-brand{grid-column:1 / -1}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px}
}
@media (max-width:768px){
  :root{--sec:52px}
  .section-title{font-size:23px}
  .hero-title{font-size:30px}
  .stat-grid{grid-template-columns:1fr 1fr;gap:22px 0}
  .stat-item{border-left:0;padding:0 0 0 0}
  .stat-item:nth-child(n+3){border-top:1px solid rgba(255,255,255,.12);padding-top:20px}
  .stat-num{font-size:34px}
  .card-grid{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;gap:0}
  .step{padding:0 0 26px 0}
  .step::after{
    top:52px;left:21px;right:auto;width:0;height:auto;
    border-top:0;border-left:1px dashed rgba(31,78,156,.3);bottom:0;
  }
  .step:last-child::after{display:none}
  .step-num{margin-bottom:0}
  .footer-top{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-band-actions{width:100%}
  .cta-band-actions .btn-primary,.cta-band-actions .btn-secondary{flex:1;min-width:140px}
}
@media (max-width:520px){
  .container{padding:0 20px}
  .brand-text strong{font-size:16px}
  .hero-title{font-size:28px}
  .hero-cta .btn-primary,.hero-cta .btn-secondary{width:100%}
  .drawer-grid{grid-template-columns:1fr}
  .crumbs .current{max-width:180px}
  .stat-grid{grid-template-columns:1fr 1fr}
}

/* roulang page: category2 */
:root{
    --brand:#1F4E9C;
    --brand-dark:#1a4386;
    --teal:#0E9AA7;
    --amber:#E8A13A;
    --bg:#F6F8FB;
    --card:#FFFFFF;
    --ink:#1B2433;
    --muted:#5A6779;
    --faint:#8695A8;
    --border:#E4EAF3;
    --divider:#EEF2F8;
    --dark:#12213F;
    --radius-lg:20px;
    --radius:16px;
    --radius-sm:14px;
    --radius-btn:10px;
    --shadow-card:0 6px 20px -8px rgba(18,33,63,.14), 0 2px 6px rgba(18,33,63,.05);
    --shadow-hover:0 16px 34px -14px rgba(18,33,63,.24);
    --ease:cubic-bezier(.22,.61,.36,1);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
    font-size:16px;
    line-height:1.8;
    letter-spacing:.01em;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border:0;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  ul,ol{margin:0;padding:0;}
  h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:.01em;}
  h1{font-size:42px;}
  h2{font-size:29px;}
  h3{font-size:19px;line-height:1.4;}
  p{margin:0;}
  :focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,78,156,.3);border-radius:8px;}
  .num{font-variant-numeric:tabular-nums;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
  .section{padding:88px 0;}
  .section-tight{padding:72px 0;}

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:#fff;
    border-bottom:1px solid var(--border);
    transition:box-shadow .22s var(--ease);
  }
  .site-header.scrolled{box-shadow:0 10px 26px -18px rgba(18,33,63,.35);}
  .nav-shell{
    display:flex;align-items:center;gap:20px;
    padding:14px 0;
    position:relative;
  }
  .nav-shell::after{
    content:"";position:absolute;left:0;right:0;bottom:-15px;height:1px;
    background:linear-gradient(90deg,rgba(31,78,156,.08),rgba(31,78,156,.02));
    pointer-events:none;
  }
  .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
  .brand-mark{
    width:26px;height:26px;border-radius:8px;
    background:linear-gradient(135deg,var(--brand) 0%,var(--teal) 100%);
    box-shadow:0 4px 10px -4px rgba(31,78,156,.6);
    position:relative;
  }
  .brand-mark::after{
    content:"";position:absolute;inset:7px;border-radius:3px;background:rgba(255,255,255,.85);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.15;}
  .brand-text strong{font-size:17px;font-weight:700;}
  .brand-text em{font-size:12px;font-style:normal;color:var(--brand);letter-spacing:.06em;}
  .nav-links{display:flex;align-items:center;gap:10px;margin-left:8px;}
  .nav-chip{
    display:inline-flex;align-items:center;gap:8px;
    padding:9px 15px;border-radius:12px;
    background:var(--bg);border:1px solid var(--border);
    font-size:14px;color:var(--ink);white-space:nowrap;
    transition:all .2s var(--ease);
  }
  .nav-chip::before{
    content:"";width:8px;height:8px;border-radius:3px;
    background:rgba(31,78,156,.28);transition:background .2s var(--ease);
  }
  .nav-chip:hover{background:#fff;border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-card);}
  .nav-chip:hover::before{background:var(--brand);}
  .nav-chip.active{background:#fff;border-color:var(--brand);color:var(--brand);font-weight:600;}
  .nav-chip.active::before{background:var(--brand);}
  .nav-actions{display:flex;align-items:center;gap:16px;margin-left:auto;}
  .nav-text-link{font-size:14px;color:var(--muted);transition:color .2s var(--ease);}
  .nav-text-link:hover{color:var(--brand);text-decoration:underline;text-decoration-color:var(--amber);text-underline-offset:4px;}
  .nav-toggle{
    display:none;width:44px;height:44px;border-radius:12px;
    border:1px solid var(--border);background:#fff;margin-left:auto;
    align-items:center;justify-content:center;position:relative;
  }
  .nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
    content:"";display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);
    transition:transform .2s var(--ease);
  }
  .nav-toggle span::before{transform:translateY(-6px);}
  .nav-toggle span::after{transform:translateY(4px);}
  .nav-drawer{
    position:fixed;inset:0;z-index:60;background:#fff;
    transform:translateY(-100%);transition:transform .26s var(--ease);
    overflow-y:auto;padding:20px 0 40px;
  }
  .nav-drawer.open{transform:translateY(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--divider);}
  .drawer-close{
    height:40px;padding:0 16px;border-radius:10px;border:1px solid var(--border);
    font-size:14px;color:var(--muted);
  }
  .drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:20px 0 22px;}
  .drawer-card{
    display:block;padding:16px;border-radius:12px;background:var(--bg);
    border:1px solid var(--border);font-size:14px;font-weight:600;
  }
  .drawer-card span{display:block;font-size:12px;font-weight:400;color:var(--faint);margin-top:4px;}
  .drawer-card.active{border-color:var(--brand);color:var(--brand);background:#fff;}
  .drawer-cta{width:100%;}

  /* ---------- 按钮 ---------- */
  .btn-primary,.btn-ghost{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 24px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;white-space:nowrap;
    transition:all .2s var(--ease);
  }
  .btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 18px -10px rgba(31,78,156,.6);}
  .btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 14px 26px -12px rgba(31,78,156,.65);}
  .btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px -10px rgba(31,78,156,.6);}
  .btn-ghost{background:#fff;border:1px solid var(--border);color:var(--brand);}
  .btn-ghost:hover{border-color:var(--brand);background:var(--bg);}
  .text-link{
    display:inline-flex;align-items:center;gap:6px;
    font-size:14.5px;font-weight:600;color:var(--brand);
    transition:color .2s var(--ease);
  }
  .text-link .arrow{transition:transform .2s var(--ease);}
  .text-link:hover{text-decoration:underline;text-decoration-color:var(--amber);text-underline-offset:4px;}
  .text-link:hover .arrow{transform:translateX(3px);}

  .badge{
    display:inline-flex;align-items:center;gap:6px;
    background:rgba(31,78,156,.1);color:var(--brand);
    font-size:12.5px;font-weight:600;padding:5px 12px;border-radius:999px;
  }
  .badge-teal{background:rgba(14,154,167,.12);color:#0b7c86;}
  .count-chip{
    display:inline-flex;align-items:center;gap:8px;
    padding:6px 14px;border-radius:999px;border:1px solid var(--border);
    background:#fff;font-size:13px;color:var(--muted);
  }
  .count-chip::before{content:"";width:7px;height:7px;border-radius:2px;background:var(--teal);}

  /* ---------- 页头 ---------- */
  .page-head{
    position:relative;
    padding:48px 0 60px;
    background-image:linear-gradient(100deg,rgba(255,255,255,.95) 0%,rgba(255,255,255,.88) 46%,rgba(255,255,255,.78) 100%),url(/assets/images/backpic/back-2.webp);
    background-size:cover;
    background-position:right top;
    border-bottom:1px solid var(--border);
  }
  .page-head::after{
    content:"";position:absolute;right:6%;top:18%;width:220px;height:220px;border-radius:50%;
    background:radial-gradient(circle,rgba(31,78,156,.06) 0%,rgba(31,78,156,0) 68%);
    pointer-events:none;
  }
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:20px;flex-wrap:wrap;}
  .breadcrumb a{color:var(--muted);}
  .breadcrumb a:hover{color:var(--brand);}
  .breadcrumb .sep{color:var(--faint);}
  .breadcrumb .current{color:var(--ink);}
  .page-head h1{max-width:760px;margin:14px 0 14px;}
  .page-head .lead{max-width:640px;font-size:17px;color:var(--muted);line-height:1.8;margin-bottom:22px;}
  .head-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}

  /* ---------- 分节标题 ---------- */
  .section-head{max-width:760px;margin-bottom:40px;}
  .kicker{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;font-weight:700;color:var(--brand);letter-spacing:.08em;
  }
  .kicker::before{content:"";width:4px;height:20px;border-radius:2px;background:var(--brand);}
  .section-head h2{margin:12px 0 12px;}
  .section-sub{color:var(--muted);font-size:16px;max-width:680px;}

  /* ---------- 交错列表 ---------- */
  .alt-list{display:grid;gap:24px;}
  .alt-item{
    display:grid;grid-template-columns:5fr 7fr;gap:28px;align-items:center;
    background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);
    padding:24px;box-shadow:var(--shadow-card);
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  }
  .alt-item:nth-child(even){grid-template-columns:7fr 5fr;}
  .alt-item:nth-child(even) .alt-media{order:2;}
  .alt-item:hover{transform:translateY(-2px);border-color:rgba(31,78,156,.4);box-shadow:var(--shadow-hover);}
  .alt-media{position:relative;height:100%;}
  .alt-media img{
    width:100%;height:100%;min-height:230px;object-fit:cover;border-radius:var(--radius-sm);
    background:linear-gradient(135deg,rgba(31,78,156,.06),rgba(14,154,167,.1));
  }
  .alt-num{
    position:absolute;top:12px;left:12px;
    background:rgba(255,255,255,.92);color:var(--brand);
    font-size:12.5px;font-weight:700;padding:4px 10px;border-radius:999px;
    font-variant-numeric:tabular-nums;
  }
  .alt-body h3{margin:12px 0 0;}
  .alt-body p{color:var(--muted);font-size:15.5px;margin:10px 0 14px;}
  .dot-list{display:grid;gap:8px;margin-bottom:16px;}
  .dot-list li{position:relative;padding-left:18px;font-size:14.5px;color:#33405A;}
  .dot-list li::before{
    content:"";position:absolute;left:2px;top:.68em;width:6px;height:6px;border-radius:2px;background:var(--teal);
  }

  /* ---------- 数据带 ---------- */
  .stats-band{background:var(--dark);color:#fff;padding:64px 0;}
  .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);}
  .stat{
    padding:8px 24px;border-left:1px solid rgba(255,255,255,.12);
  }
  .stat:first-child{border-left:0;padding-left:0;}
  .stat strong{display:block;font-size:46px;font-weight:700;line-height:1.15;font-variant-numeric:tabular-nums;}
  .stat span{display:block;font-size:14px;color:rgba(255,255,255,.76);margin-top:6px;}
  .stat em{display:block;font-size:13px;font-style:normal;color:rgba(255,255,255,.5);margin-top:10px;}

  /* ---------- 快速入口 ---------- */
  .quick-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
  .quick-card{
    display:flex;flex-direction:column;gap:10px;
    background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
    padding:26px;box-shadow:var(--shadow-card);
    transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .quick-card:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--shadow-hover);}
  .quick-no{
    width:38px;height:38px;border-radius:12px;display:flex;align-items:center;justify-content:center;
    background:rgba(31,78,156,.1);color:var(--brand);font-weight:700;font-size:14px;
    font-variant-numeric:tabular-nums;
  }
  .quick-card h3{font-size:18px;}
  .quick-card p{font-size:14.5px;color:var(--muted);}

  /* ---------- FAQ ---------- */
  .faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:32px;align-items:start;}
  .faq-side h2{margin:12px 0 14px;}
  .faq-side p{color:var(--muted);font-size:15px;margin-bottom:22px;}
  .faq-side-card{
    background:var(--bg);border:1px solid rgba(31,78,156,.35);border-radius:var(--radius);
    padding:22px;
  }
  .faq-side-card strong{display:block;font-size:16px;margin-bottom:8px;}
  .faq-side-card p{font-size:14px;margin-bottom:16px;}
  .faq-list{display:grid;gap:12px;}
  .faq-item{
    background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);
    overflow:hidden;position:relative;
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .faq-item::before{
    content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand);
    transform:scaleY(0);transform-origin:top;transition:transform .22s var(--ease);
  }
  .faq-item.open{border-color:rgba(31,78,156,.4);box-shadow:var(--shadow-card);}
  .faq-item.open::before{transform:scaleY(1);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:20px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--ink);
    transition:color .2s var(--ease);
  }
  .faq-item.open .faq-q{color:var(--brand);}
  .faq-icon{position:relative;width:22px;height:22px;flex:0 0 22px;transition:transform .22s var(--ease);}
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
    transform:translate(-50%,-50%);transition:transform .22s var(--ease),opacity .22s var(--ease);
  }
  .faq-icon::before{width:14px;height:2px;}
  .faq-icon::after{width:2px;height:14px;}
  .faq-item.open .faq-icon{transform:rotate(180deg);}
  .faq-item.open .faq-icon::after{opacity:0;transform:translate(-50%,-50%) rotate(90deg);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease);}
  .faq-a p{padding:0 22px 22px;font-size:15px;color:var(--muted);}

  /* ---------- CTA 条带 ---------- */
  .cta-band{padding:0 0 88px;}
  .cta-inner{
    background:rgba(31,78,156,.06);
    border:1px solid rgba(31,78,156,.18);
    border-radius:var(--radius-lg);
    padding:40px 44px;
    display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  }
  .cta-inner h2{font-size:24px;margin-bottom:10px;}
  .cta-inner p{color:var(--muted);font-size:15.5px;max-width:560px;}
  .cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--dark);color:#fff;padding-top:64px;}
  .footer-top{
    display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;
    padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12);
  }
  .footer-brand strong{display:block;font-size:18px;margin-bottom:12px;}
  .footer-brand p{font-size:14px;color:rgba(255,255,255,.68);max-width:280px;}
  .footer-col h4{font-size:14px;margin-bottom:16px;color:#fff;}
  .footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.68);margin-bottom:10px;transition:color .2s var(--ease);}
  .footer-col a:hover{color:var(--teal);text-decoration:underline;text-underline-offset:4px;}
  .footer-bottom{
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    padding:20px 0 28px;font-size:13px;color:rgba(255,255,255,.6);
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1180px){
    .nav-chip{padding:8px 12px;font-size:13.5px;}
  }
  @media (max-width:1023px){
    .nav-links,.nav-actions{display:none;}
    .nav-toggle{display:flex;}
    .section{padding:64px 0;}
    .cta-band{padding-bottom:64px;}
    .footer-top{grid-template-columns:1fr 1fr;}
    .faq-layout{grid-template-columns:1fr;gap:24px;}
    .stat{padding:8px 18px;}
    .stat strong{font-size:38px;}
  }
  @media (min-width:1024px){
    .nav-drawer{display:none;}
  }
  @media (max-width:767px){
    .container{padding:0 20px;}
    h1{font-size:30px;}
    h2{font-size:23px;}
    h3{font-size:17px;}
    .section{padding:52px 0;}
    .page-head{padding:32px 0 44px;}
    .page-head .lead{font-size:16px;}
    .section-head{margin-bottom:28px;}
    .alt-item,.alt-item:nth-child(even){grid-template-columns:1fr;gap:18px;padding:18px;}
    .alt-item:nth-child(even) .alt-media{order:0;}
    .alt-media img{min-height:180px;}
    .stats-band{padding:44px 0;}
    .stats-grid{grid-template-columns:1fr 1fr;gap:24px 0;}
    .stat{border-left:0;padding:0;border-top:1px solid rgba(255,255,255,.12);padding-top:20px;}
    .stat:nth-child(1),.stat:nth-child(2){border-top:0;padding-top:0;}
    .stat strong{font-size:34px;}
    .quick-grid{grid-template-columns:1fr;}
    .quick-card{padding:20px;}
    .cta-inner{padding:26px 22px;}
    .cta-actions{width:100%;}
    .cta-actions .btn-primary,.cta-actions .btn-ghost{flex:1 1 auto;}
    .footer-top{grid-template-columns:1fr;gap:26px;padding-bottom:32px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
    .drawer-grid{grid-template-columns:1fr 1fr;}
  }
  @media (max-width:420px){
    .drawer-grid{grid-template-columns:1fr;}
    .btn-primary,.btn-ghost{width:100%;}
    .cta-actions{flex-direction:column;}
  }