/* roulang page: index */
/* ============ 变量层 ============ */
:root{
  --brand:#1B57C8;
  --brand-dark:#1546A6;
  --brand-ink:#0F3676;
  --brand-soft:#EDF3FE;
  --accent:#FF6A2B;
  --page:#F5F8FD;
  --card:#FFFFFF;
  --alt:#EEF3FB;
  --line:#E3EAF5;
  --line-2:#DCE5F2;
  --text:#0F1D33;
  --text-2:#44546B;
  --text-3:#7A8AA3;
  --up:#1FA971;
  --down:#E5484D;
  --r-card:16px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 2px 6px rgba(15,29,51,.04);
  --sh-2:0 12px 28px rgba(15,29,51,.10);
  --sh-3:0 18px 40px rgba(15,29,51,.12);
  --sec:88px;
  --font:PingFang SC,"HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
}
/* ============ reset 与基础排版 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text-2);
  background:var(--page);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,li,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,transform .2s ease;}
a:hover{color:var(--brand-dark);}
button,input,select,textarea{font-family:inherit;font-size:16px;}
button{cursor:pointer;}
strong{color:var(--text);}
h1,h2,h3,h4{color:var(--text);font-weight:700;letter-spacing:.2px;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;}
/* ============ Foundation 覆写 ============ */
body,.grid-container,.grid-x,.cell{font-family:var(--font);}
a{color:var(--brand);}
a:hover{color:var(--brand-dark);}
.button,.button.primary,.button.secondary{
  background:var(--brand);border-radius:var(--r-sm);font-family:var(--font);
  font-weight:600;letter-spacing:.3px;border:1px solid transparent;
}
.callout{background:var(--brand-soft);border:1px solid var(--line-2);border-radius:var(--r-sm);color:var(--text-2);}
table{border-collapse:collapse;width:100%;}
.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;}
@media screen and (min-width:1440px){.grid-container{max-width:1280px;}}
/* ============ 通用组件 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  border:1px solid transparent;transition:all .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 4px 12px rgba(27,87,200,.22);}
.btn-primary:hover,.btn-primary:focus{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px rgba(27,87,200,.28);}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 6px rgba(27,87,200,.2);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--line-2);}
.btn-ghost:hover,.btn-ghost:focus{background:var(--brand-soft);color:var(--brand-dark);border-color:#C6D8F7;transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--brand-ink);}
.btn-light:hover{background:var(--brand-soft);color:var(--brand-ink);transform:translateY(-1px);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.text-link{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--brand);}
.text-link i{transition:transform .2s ease;}
.text-link:hover i{transform:translateX(3px);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:600;line-height:1.6;
}
.badge-hot{background:#FFF0E9;color:var(--accent);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:600;margin-bottom:20px;
}
.sec{padding:var(--sec) 0;}
.sec-alt{background:var(--alt);}
.sec-head{margin-bottom:32px;}
.sec-head h2{
  position:relative;font-size:32px;line-height:1.3;font-weight:700;padding-left:18px;
}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:22px;border-radius:2px;background:var(--brand);
}
.sec-head p{margin-top:12px;font-size:15px;color:var(--text-3);max-width:720px;}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D6E2F5;}
/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:0 8px 24px rgba(15,29,51,.06);}
.nav-wrap{display:flex;align-items:center;gap:24px;height:68px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;color:var(--text);}
.brand-mark{
  width:38px;height:38px;border-radius:10px;background:var(--brand);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:800;letter-spacing:.5px;
  box-shadow:0 6px 14px rgba(27,87,200,.24);
}
.brand-text{display:flex;align-items:baseline;font-size:17px;line-height:1;}
.brand-text strong{font-weight:800;color:var(--text);}
.brand-text em{font-style:normal;font-weight:500;color:var(--brand);}
.main-nav{display:flex;align-items:center;gap:28px;flex:1;}
.main-nav a{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);padding:6px 0;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.main-nav a:hover{color:var(--brand);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.active{color:var(--brand);font-weight:600;}
.main-nav a.active::after{transform:scaleX(1);}
.nav-tools{display:flex;align-items:center;gap:16px;flex-shrink:0;}
.command-search{
  display:flex;align-items:center;gap:8px;height:36px;width:240px;padding:0 12px;
  background:#F2F6FC;border:1px solid var(--line-2);border-radius:var(--r-sm);
  transition:border-color .2s ease,background .2s ease,box-shadow .2s ease;
}
.command-search:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 2px rgba(27,87,200,.15);}
.command-search i{color:var(--text-3);font-size:13px;}
.command-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--text);
}
.command-search input::placeholder{color:var(--text-3);}
.command-search kbd{
  font-family:var(--font);font-size:11px;color:var(--text-3);
  background:#fff;border:1px solid var(--line-2);border-radius:5px;padding:1px 6px;
}
.nav-quick{font-size:14px;font-weight:500;color:var(--text-2);white-space:nowrap;}
.nav-quick:hover{color:var(--brand);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line-2);border-radius:var(--r-sm);
  background:#fff;color:var(--brand);font-size:17px;
}
.mobile-search{display:none;}
/* ============ Hero ============ */
.hero{
  background:linear-gradient(180deg,#F7FAFF 0%,#FFFFFF 100%);
  padding:64px 0 76px;overflow:hidden;
}
.hero-grid{min-height:560px;align-items:center;}
.hero-copy{padding-right:40px;}
.hero h1{
  font-size:44px;line-height:1.25;font-weight:700;letter-spacing:.4px;margin-bottom:20px;
}
.hero-sub{font-size:17px;line-height:1.8;color:var(--text-2);max-width:34em;margin-bottom:32px;}
.hero-actions{display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin-bottom:36px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:32px;padding-top:26px;border-top:1px solid var(--line);}
.hero-stats li{display:flex;flex-direction:column;gap:2px;}
.hero-stats strong{font-size:22px;font-weight:700;color:var(--brand-ink);font-variant-numeric:tabular-nums;}
.hero-stats span{font-size:13px;color:var(--text-3);}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card);
  box-shadow:var(--sh-2);
}
.hero-float{
  position:absolute;right:-8px;bottom:-26px;display:flex;align-items:center;gap:12px;
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px 16px;
  box-shadow:var(--sh-3);max-width:260px;
}
.hero-float img{width:52px;height:52px;aspect-ratio:1/1;border-radius:10px;object-fit:cover;box-shadow:none;flex-shrink:0;}
.hero-float strong{display:block;font-size:19px;line-height:1.2;color:var(--brand-ink);font-variant-numeric:tabular-nums;}
.hero-float span{font-size:12px;color:var(--text-3);line-height:1.5;}
/* ============ 指标看板 ============ */
.metric-card{padding:24px 22px;background:#fff;border-radius:var(--r-card);border:1px solid var(--line);box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease;}
.metric-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.metric-value{display:flex;align-items:flex-end;gap:4px;font-size:42px;line-height:1;font-weight:700;color:var(--brand-ink);font-variant-numeric:tabular-nums;}
.metric-value small{font-size:14px;font-weight:600;color:var(--text-3);padding-bottom:5px;}
.metric-name{margin-top:12px;font-size:15px;color:var(--text-2);font-weight:500;}
.metric-foot{display:flex;align-items:center;justify-content:space-between;margin-top:14px;padding-top:14px;border-top:1px solid var(--line);}
.trend{font-size:13px;font-weight:600;}
.trend.up{color:var(--up);}
.trend.down{color:var(--down);}
.metric-foot span{font-size:12px;color:var(--text-3);}
/* ============ 服务矩阵 ============ */
.svc-main{
  display:flex;flex-direction:column;padding:32px;height:100%;
}
.svc-icon{
  width:52px;height:52px;border-radius:14px;background:var(--brand-soft);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:20px;
}
.svc-main h3{font-size:24px;line-height:1.4;margin-bottom:14px;}
.svc-main p{font-size:15px;line-height:1.8;color:var(--text-2);margin-bottom:22px;}
.svc-main img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:12px;margin-bottom:22px;}
.svc-side{padding:26px;display:flex;flex-direction:column;height:100%;}
.svc-side h3{font-size:19px;margin-bottom:10px;}
.svc-side p{font-size:14px;line-height:1.75;color:var(--text-2);margin-bottom:16px;}
.svc-side .svc-icon{width:44px;height:44px;font-size:18px;margin-bottom:16px;}
.svc-mini{padding:22px;display:flex;gap:16px;height:100%;}
.svc-mini .svc-icon{margin-bottom:0;width:44px;height:44px;font-size:17px;flex-shrink:0;}
.svc-mini h3{font-size:17px;margin-bottom:8px;}
.svc-mini p{font-size:14px;line-height:1.7;color:var(--text-2);margin-bottom:12px;}
/* ============ 结果对比 ============ */
.compare-card{padding:28px;height:100%;}
.compare-card.plain{background:#F2F5FA;border:1px solid var(--line);box-shadow:none;}
.compare-card.strong{background:#fff;border:1px solid var(--line);border-left:4px solid var(--brand);box-shadow:var(--sh-2);}
.compare-card h3{font-size:19px;margin:14px 0 18px;}
.compare-card.plain h3{font-size:17px;color:var(--text-2);font-weight:600;}
.compare-list li{
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:14px 0;border-bottom:1px solid var(--line);font-size:14px;
}
.compare-list li:last-child{border-bottom:0;}
.compare-list .k{color:var(--text-3);}
.compare-list .v{color:var(--text);font-weight:600;text-align:right;}
.compare-foot{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  margin-top:28px;padding-top:24px;border-top:1px solid var(--line);
}
.compare-foot p{font-size:15px;color:var(--text-2);max-width:60ch;}
/* ============ 最新信息 ============ */
.news-feature{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);height:100%;
  transition:transform .22s ease,box-shadow .22s ease;
}
.news-feature:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.news-feature-media{display:block;overflow:hidden;}
.news-feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .35s ease;}
.news-feature:hover .news-feature-media img{transform:scale(1.03);}
.news-feature-body{padding:24px;}
.news-feature-body h3{font-size:22px;line-height:1.5;margin:12px 0 12px;}
.news-feature-body h3 a{color:var(--text);}
.news-feature-body h3 a:hover{color:var(--brand);}
.news-excerpt{
  font-size:15px;color:var(--text-2);line-height:1.75;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-3);}
.news-meta a{display:inline-flex;align-items:center;gap:6px;font-weight:600;}
.news-list{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);height:100%;padding:8px 22px;display:flex;flex-direction:column;justify-content:center;
}
.news-list li{border-bottom:1px solid var(--line);}
.news-list li:last-child{border-bottom:0;}
.news-list a{display:block;padding:16px 0;color:var(--text);}
.news-list a:hover .news-list-title{color:var(--brand);}
.news-list-title{
  display:block;font-size:16px;font-weight:600;line-height:1.5;margin-bottom:6px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:color .2s ease;
}
.news-list-meta{display:block;font-size:13px;color:var(--text-3);}
.empty-state{
  background:#F2F5FA;border:1px dashed var(--line-2);border-radius:var(--r-card);
  padding:56px 24px;text-align:center;
}
.empty-state i{font-size:28px;color:var(--text-3);}
.empty-state p{margin:14px 0 20px;font-size:15px;color:var(--text-3);}
/* ============ FAQ ============ */
.faq-aside h2{position:relative;font-size:32px;line-height:1.3;padding-left:18px;margin-bottom:14px;}
.faq-aside h2::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:22px;border-radius:2px;background:var(--brand);}
.faq-aside p{font-size:15px;color:var(--text-3);margin-bottom:24px;}
.accordion{background:transparent;border:0;border-radius:0;margin:0;}
.accordion-item{background:transparent;border-bottom:1px solid var(--line);}
.accordion-item:first-child{border-top:1px solid var(--line);}
.accordion-title{
  position:relative;border:0;background:transparent;padding:20px 52px 20px 0;
  font-size:16px;font-weight:600;color:var(--text);line-height:1.6;
}
.accordion-title:hover{color:var(--brand);background:transparent;}
.accordion-title::before{display:none;}
.accordion-title::after{
  content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);
  width:28px;height:28px;line-height:26px;text-align:center;border-radius:50%;
  border:1px solid var(--line-2);color:var(--brand);font-size:16px;font-weight:600;background:#fff;
  transition:all .2s ease;
}
.accordion-item.is-active .accordion-title::after{
  content:"−";background:var(--brand);border-color:var(--brand);color:#fff;
}
.accordion-content{
  display:none;background:transparent;border:0;padding:0 52px 20px 0;
  font-size:15px;line-height:1.8;color:var(--text-2);
}
.accordion-content p{font-size:15px;line-height:1.8;color:var(--text-2);}
/* ============ 表单 / CTA ============ */
.cta-band{background:var(--brand-ink);padding:var(--sec) 0;}
.cta-band h2{color:#fff;font-size:32px;line-height:1.35;margin-bottom:16px;}
.cta-band .lead{color:#C2D3EF;font-size:15px;line-height:1.8;margin-bottom:26px;max-width:32em;}
.cta-points li{display:flex;gap:12px;align-items:flex-start;color:#D6E2F7;font-size:15px;margin-bottom:14px;}
.cta-points i{color:#7FB0FF;margin-top:5px;}
.form-card{background:#fff;border-radius:var(--r-card);box-shadow:var(--sh-3);padding:32px;}
.form-card h3{font-size:20px;margin-bottom:6px;}
.form-card .form-tip{font-size:13px;color:var(--text-3);margin-bottom:22px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--text);margin-bottom:8px;}
.field label .req{color:var(--accent);margin-left:2px;}
.field input,.field select,.field textarea{
  width:100%;height:44px;padding:0 14px;border:1px solid var(--line-2);border-radius:var(--r-sm);
  background:#FBFCFE;color:var(--text);outline:none;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field textarea{height:104px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);background:#fff;box-shadow:0 0 0 2px rgba(27,87,200,.15);
}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.form-note{font-size:12px;color:var(--text-3);margin-top:12px;line-height:1.7;}
/* ============ 页脚 ============ */
.site-footer{background:#0B2043;border-top:2px solid var(--brand);padding:64px 0 0;color:#C7D6EE;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand .brand-text strong{color:#fff;}
.footer-brand .brand-text em{color:#8FB6FF;}
.footer-desc{font-size:14px;line-height:1.8;color:#9DB3D6;max-width:34ch;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:#C7D6EE;}
.footer-col a:hover{color:#fff;}
.footer-contact li{font-size:14px;color:#9DB3D6;margin-bottom:10px;display:flex;gap:10px;align-items:flex-start;}
.footer-contact i{color:#5A86D6;margin-top:5px;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(199,214,238,.16);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8FA6C9;
}
.footer-bottom a{color:#8FA6C9;}
.footer-bottom a:hover{color:#fff;}
/* ============ 响应式 ============ */
@media screen and (max-width:1279px){
  .command-search{width:200px;}
  .main-nav{gap:22px;}
}
@media screen and (max-width:1023px){
  :root{--sec:72px;}
  .nav-wrap{height:64px;}
  .main-nav{
    position:fixed;top:64px;left:0;right:0;bottom:0;z-index:70;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    background:#fff;padding:20px 16px 40px;overflow-y:auto;
  }
  .nav-open .main-nav{display:flex;}
  .main-nav a{font-size:16px;padding:16px 4px;border-bottom:1px solid var(--line);}
  .main-nav a::after{display:none;}
  .mobile-search{
    display:flex;align-items:center;gap:10px;height:44px;padding:0 14px;margin-bottom:12px;
    background:#F2F6FC;border:1px solid var(--line-2);border-radius:var(--r-sm);
  }
  .mobile-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:15px;}
  .mobile-search i{color:var(--text-3);}
  .command-search{display:none;}
  .nav-quick{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .hero{padding:40px 0 56px;}
  .hero-copy{padding-right:0;margin-bottom:48px;}
  .hero h1{font-size:34px;}
  .hero-media img{aspect-ratio:16/9;}
  .sec-head h2{font-size:26px;}
  .faq-aside h2{font-size:26px;}
  .cta-band h2{font-size:26px;}
  .svc-main{padding:24px;}
  .svc-main h3{font-size:21px;}
  .form-card{padding:24px;margin-top:32px;}
}
@media screen and (max-width:767px){
  :root{--sec:56px;}
  .hero h1{font-size:30px;}
  .hero-sub{font-size:16px;}
  .hero-actions{gap:16px;}
  .hero-stats{gap:22px;}
  .hero-float{position:static;margin-top:16px;right:auto;bottom:auto;max-width:none;box-shadow:var(--sh-2);}
  .sec-head h2{font-size:23px;}
  .faq-aside h2{font-size:23px;}
  .cta-band h2{font-size:23px;}
  .metric-value{font-size:34px;}
  .news-feature-body h3{font-size:19px;}
  .compare-foot{flex-direction:column;align-items:flex-start;}
}
@media screen and (max-width:519px){
  .grid-container{padding-left:16px;padding-right:16px;}
  .hero h1{font-size:27px;line-height:1.32;}
  .brand-text{font-size:15px;}
  .brand-mark{width:34px;height:34px;font-size:13px;}
  .btn{width:100%;}
  .hero-actions .text-link{width:auto;}
  .hero-stats{gap:18px;}
  .hero-stats li{min-width:44%;}
  .cta-points{gap:8px;}
}

/* roulang page: article */
:root{
  --brand:#1B57C8;
  --brand-dark:#1546A6;
  --brand-ink:#0F3676;
  --brand-soft:#EDF3FE;
  --accent:#FF6A2B;
  --page:#F5F8FD;
  --card:#FFFFFF;
  --alt:#EEF3FB;
  --line:#E3EAF5;
  --line-2:#DCE5F2;
  --title:#0F1D33;
  --text:#44546B;
  --muted:#7A8AA3;
  --up:#1FA971;
  --down:#E5484D;
  --radius-lg:16px;
  --radius-md:10px;
  --radius-sm:8px;
  --shadow-1:0 2px 6px rgba(15,29,51,.04);
  --shadow-2:0 12px 28px rgba(15,29,51,.10);
  --shadow-3:0 18px 40px rgba(15,29,51,.12);
  --section:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:12px;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,background-color .18s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4{color:var(--title);margin:0;font-weight:600;letter-spacing:.2px;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(15,29,51,.06);}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:68px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--title);}
.brand:hover{color:var(--title);}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(140deg,#1B57C8,#0F3676);
  color:#fff;font-weight:700;font-size:15px;letter-spacing:.5px;
  display:flex;align-items:center;justify-content:center;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;color:var(--title);font-weight:700;letter-spacing:.3px;}
.brand-text em{font-style:normal;font-size:12px;color:var(--brand);letter-spacing:1.6px;text-transform:lowercase;}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:8px;}
.main-nav a{
  position:relative;
  font-size:15px;
  color:var(--text);
  padding:6px 0;
  white-space:nowrap;
}
.main-nav a::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.main-nav a:hover{color:var(--brand);}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1);}
.main-nav a.active{color:var(--brand);font-weight:600;}
.mobile-search{display:none;}
.nav-tools{margin-left:auto;display:flex;align-items:center;gap:14px;}
.command-search{
  position:relative;display:flex;align-items:center;
  width:240px;height:36px;padding:0 10px;
  background:#F2F6FC;border:1px solid var(--line);border-radius:var(--radius-md);
}
.command-search i{color:var(--muted);font-size:13px;}
.command-search input{
  flex:1;border:0;background:transparent;height:100%;padding:0 8px;
  font-size:13px;color:var(--title);outline:none;
}
.command-search input::placeholder{color:var(--muted);}
.command-search kbd{
  font-size:11px;color:var(--muted);background:#fff;border:1px solid var(--line-2);
  border-radius:5px;padding:1px 6px;font-family:inherit;
}
.nav-quick{font-size:14px;color:var(--text);white-space:nowrap;}
.nav-quick:hover{color:var(--brand);}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line-2);
  background:#fff;border-radius:var(--radius-md);color:var(--title);cursor:pointer;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-md);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .16s ease,box-shadow .16s ease,background-color .16s ease,color .16s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 2px 6px rgba(27,87,200,.20);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px rgba(27,87,200,.28);}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 6px rgba(27,87,200,.2);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--line-2);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.link-arrow{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.link-arrow i{transition:transform .18s ease;}
.link-arrow:hover i{transform:translateX(3px);}

/* ---------- article hero ---------- */
.article-hero{
  background:linear-gradient(180deg,#F7FAFF 0%,#FFFFFF 100%);
  border-bottom:1px solid var(--line);
  padding:32px 0 44px;
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin-bottom:20px;}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:#C3CEE0;}
.crumbs .current{color:var(--brand);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:12.5px;
  background:var(--brand-soft);color:var(--brand);font-weight:600;
}
.badge-accent{background:#FFF1E9;color:var(--accent);}
.article-title{
  font-size:40px;line-height:1.3;font-weight:700;margin:16px 0 18px;max-width:900px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:var(--muted);}
.article-meta i{font-size:12px;color:#A9B6C9;}
.article-meta .dot{color:#C3CEE0;}

/* ---------- layout ---------- */
.page-section{padding:56px 0 var(--section);}
.article-grid{display:flex;flex-wrap:wrap;gap:32px;align-items:flex-start;}
.article-main{flex:1 1 640px;min-width:0;}
.article-side{flex:1 1 300px;max-width:360px;min-width:280px;}
.panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);padding:32px;
}
.article-body{font-size:16.5px;line-height:1.8;color:var(--text);max-width:820px;}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  position:relative;font-size:24px;line-height:1.4;margin:40px 0 16px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;width:4px;height:20px;border-radius:2px;background:var(--brand);
}
.article-body h3{font-size:19px;margin:28px 0 12px;}
.article-body p{margin:0 0 1.2em;}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:4px;}
.article-body li{position:relative;padding-left:20px;margin-bottom:10px;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.66em;width:7px;height:7px;border-radius:2px;background:var(--brand);
}
.article-body ol{counter-reset:olc;}
.article-body ol li::before{
  counter-increment:olc;content:counter(olc);
  position:absolute;left:0;top:0;color:var(--brand);font-weight:700;font-size:14px;
}
.article-body blockquote{
  margin:24px 0;padding:20px 22px;background:var(--brand-soft);
  border-left:4px solid var(--brand);border-radius:0 var(--radius-md) var(--radius-md) 0;
  color:#2C3E5C;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:20px 0;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px;}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;}
.article-body th{background:var(--alt);color:var(--title);font-weight:600;}
.article-body tr:nth-child(even) td{background:#FAFCFF;}
.article-body strong{color:var(--title);}
.article-body a{font-weight:600;text-decoration:underline;text-decoration-color:#BFD3F5;text-underline-offset:3px;}

/* ---------- sidebar ---------- */
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);padding:22px;margin-bottom:20px;
}
.side-card h3{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3 i{color:var(--brand);font-size:14px;}
.side-list li{border-bottom:1px dashed var(--line);padding:11px 0;}
.side-list li:last-child{border-bottom:0;padding-bottom:0;}
.side-list a{font-size:14.5px;color:var(--text);display:block;}
.side-list a:hover{color:var(--brand);}
.side-list span{display:block;font-size:12.5px;color:var(--muted);margin-top:4px;}
.side-cta{
  background:#fff;border:1px solid var(--brand);border-radius:var(--radius-lg);
  padding:24px;box-shadow:var(--shadow-1);text-align:left;
}
.side-cta h3{font-size:17px;margin-bottom:8px;}
.side-cta p{font-size:14px;color:var(--muted);margin-bottom:16px;}
.side-cta .btn{width:100%;}
.sticky{position:sticky;top:96px;}

/* ---------- tags & related ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line);}
.tag{
  font-size:13px;padding:5px 12px;border-radius:999px;background:var(--alt);color:#3A527A;
}
.tag:hover{background:var(--brand-soft);color:var(--brand);}
.article-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;margin-top:28px;}
.related{margin-top:56px;}
.related h2{
  position:relative;font-size:24px;padding-left:16px;margin-bottom:24px;
}
.related h2::before{content:"";position:absolute;left:0;top:.3em;width:4px;height:20px;border-radius:2px;background:var(--brand);}
.rel-grid{display:flex;flex-wrap:wrap;gap:24px;}
.rel-grid .rel-item{flex:1 1 280px;min-width:0;}
.rel-card{
  display:block;height:100%;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.rel-card img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0;}
.rel-card .rel-body{padding:18px 20px 22px;}
.rel-card h3{font-size:17px;line-height:1.5;margin:10px 0 8px;}
.rel-card p{font-size:14px;color:var(--muted);margin:0 0 12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-card .rel-meta{font-size:12.5px;color:var(--muted);display:flex;gap:10px;align-items:center;}

/* ---------- empty ---------- */
.empty-state{
  background:var(--alt);border:1px dashed var(--line-2);border-radius:var(--radius-lg);
  padding:48px 28px;text-align:center;
}
.empty-state i{font-size:30px;color:#A9B6C9;margin-bottom:14px;display:block;}
.empty-state h2{font-size:20px;margin-bottom:8px;}
.empty-state p{color:var(--muted);margin-bottom:20px;}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--brand-ink);color:#D8E4F7;border-radius:var(--radius-lg);
  padding:40px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.cta-band h2{color:#fff;font-size:24px;margin-bottom:10px;}
.cta-band p{color:#B9CBE9;margin:0;max-width:620px;font-size:15px;}
.cta-band .btn-primary{background:#fff;color:var(--brand-ink);}
.cta-band .btn-primary:hover{background:#EDF3FE;color:var(--brand-ink);}

/* ---------- footer ---------- */
.site-footer{
  background:#0B2043;color:#C7D6EE;border-top:2px solid var(--brand);
  padding:56px 0 0;margin-top:0;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-text strong{color:#fff;}
.footer-brand .brand-text em{color:#7FA8F0;}
.footer-desc{font-size:14px;color:#9DB3D4;line-height:1.7;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{color:#C7D6EE;font-size:14px;}
.footer-col ul a:hover{color:#fff;}
.footer-contact li{display:flex;align-items:center;gap:10px;font-size:14px;color:#C7D6EE;margin-bottom:12px;}
.footer-contact i{color:#7FA8F0;font-size:13px;}
.footer-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid rgba(199,214,238,.16);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:#93A9CA;
}
.footer-bottom a{color:#C7D6EE;}
.footer-bottom a:hover{color:#fff;}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .command-search{width:200px;}
  .main-nav{gap:20px;}
}
@media (max-width:1023px){
  :root{--section:72px;}
  .nav-wrap{gap:16px;}
  .command-search{display:none;}
  .nav-quick{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .main-nav{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:0 18px 40px rgba(15,29,51,.12);
    padding:0 24px 18px;display:none;
  }
  .main-nav.is-open{display:flex;}
  .main-nav a{padding:14px 0;border-bottom:1px solid var(--line);font-size:16px;}
  .main-nav a::after{display:none;}
  .mobile-search{
    display:flex;align-items:center;gap:10px;
    background:#F2F6FC;border:1px solid var(--line);border-radius:var(--radius-md);
    height:42px;padding:0 12px;margin:16px 0 6px;
  }
  .mobile-search i{color:var(--muted);}
  .mobile-search input{border:0;background:transparent;height:100%;flex:1;outline:none;font-size:14px;}
  .article-title{font-size:32px;}
  .article-side{max-width:none;flex-basis:100%;}
  .sticky{position:static;}
}
@media (max-width:767px){
  .grid-container{padding-left:18px;padding-right:18px;}
  .article-hero{padding:24px 0 32px;}
  .article-title{font-size:27px;margin:14px 0 16px;}
  .page-section{padding:40px 0 var(--section);}
  .panel{padding:22px 18px;}
  .article-body{font-size:16px;}
  .article-body h2{font-size:21px;margin-top:32px;}
  .cta-band{padding:28px 22px;}
  .cta-band h2{font-size:20px;}
  .rel-grid{gap:18px;}
}
@media (max-width:519px){
  .brand-text strong{font-size:16px;}
  .brand-text em{font-size:11px;letter-spacing:1.2px;}
  .btn{height:44px;padding:0 18px;font-size:14.5px;}
  .crumbs .current{max-width:200px;}
  .article-meta{gap:8px;font-size:13px;}
  .footer-bottom{flex-direction:column;}
  .side-card,.side-cta{padding:18px;}
}

/* roulang page: category1 */
/* ===== 1. 设计变量 ===== */
:root{
  --brand:#1B57C8;
  --brand-dark:#1546A6;
  --brand-ink:#0F3676;
  --brand-soft:#EDF3FE;
  --accent:#FF6A2B;
  --bg:#F5F8FD;
  --bg-alt:#EEF3FB;
  --card:#FFFFFF;
  --line:#E3EAF5;
  --line-2:#DCE5F2;
  --t1:#0F1D33;
  --t2:#44546B;
  --t3:#7A8AA3;
  --t4:#A9B6C9;
  --up:#1FA971;
  --down:#E5484D;
  --r-card:16px;
  --r-sm:10px;
  --r-img:14px;
  --sh-1:0 2px 6px rgba(15,29,51,.04);
  --sh-2:0 12px 28px rgba(15,29,51,.10);
  --sh-3:0 18px 40px rgba(15,29,51,.12);
  --sec-y:88px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
}
/* ===== 2. reset 与基础排版 ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--t2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0;color:var(--t1);font-family:var(--font);line-height:1.3;}
p{margin:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,transform .2s ease;}
a:hover{color:var(--brand-dark);}
img{max-width:100%;display:block;border-radius:var(--r-img);}
button{font-family:var(--font);}
ul{margin:0;padding:0;list-style:none;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.num{font-variant-numeric:tabular-nums;}

/* ===== 3. 容器与栅格 ===== */
.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;}
.grid-container.full{max-width:none;}
.section{padding:var(--sec-y) 0;}
.section.alt{background:var(--bg-alt);}
.section.white{background:#fff;}
.sec-head{margin-bottom:32px;}
.sec-title{
  position:relative;
  font-size:32px;
  font-weight:600;
  padding-left:16px;
  letter-spacing:.2px;
}
.sec-title::before{
  content:"";
  position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:20px;border-radius:2px;background:var(--brand);
}
.sec-sub{margin-top:12px;font-size:15px;color:var(--t3);max-width:720px;}
.sec-head.row-between{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;}

/* ===== 4. 按钮 / 徽章 / 标签 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;transition:all .22s ease;white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 2px 6px rgba(27,87,200,.18);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px rgba(27,87,200,.28);}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 6px rgba(27,87,200,.2);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--line-2);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-1px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-lg{height:48px;padding:0 28px;font-size:16px;}
.btn-block{width:100%;}
.btn-light{background:#fff;color:var(--brand-ink);}
.btn-light:hover{background:#EAF1FF;color:var(--brand-ink);transform:translateY(-1px);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;}
.link-arrow i{transition:transform .2s ease;}
.link-arrow:hover i{transform:translateX(3px);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:600;line-height:1;
}
.badge.hot{background:#FFF1E9;color:var(--accent);}
.badge.plain{background:#EAF3EC;color:var(--up);}

/* ===== 5. 导航 ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:0 8px 24px rgba(15,29,51,.06);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:70px;gap:20px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--t1);}
.brand:hover{color:var(--t1);}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  background:var(--brand);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;letter-spacing:.5px;
}
.brand-text{display:inline-flex;align-items:baseline;gap:2px;font-size:18px;line-height:1;}
.brand-text strong{font-weight:700;color:var(--t1);}
.brand-text em{font-style:normal;font-weight:500;font-size:15px;color:var(--brand);}
.main-nav{display:flex;align-items:center;gap:28px;}
.main-nav a{
  position:relative;font-size:15px;color:var(--t2);padding:6px 0;font-weight:500;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.main-nav a:hover{color:var(--brand);}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1);}
.main-nav a.active{color:var(--brand);font-weight:600;}
.mobile-search{display:none;}
.nav-tools{display:flex;align-items:center;gap:14px;}
.command-search{
  position:relative;display:flex;align-items:center;
  width:240px;height:36px;background:#F2F6FC;border:1px solid transparent;
  border-radius:var(--r-sm);padding:0 10px;gap:8px;transition:all .2s ease;
}
.command-search:focus-within{background:#fff;border-color:var(--brand);box-shadow:0 0 0 2px rgba(27,87,200,.16);}
.command-search i{color:var(--t3);font-size:13px;}
.command-search input{
  flex:1;height:100%;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--t1);font-family:var(--font);
}
.command-search input::placeholder{color:var(--t4);}
.command-search kbd{
  font-family:var(--font);font-size:11px;color:var(--t3);
  background:#fff;border:1px solid var(--line-2);border-radius:5px;
  padding:1px 6px;line-height:1.5;
}
.nav-quick{font-size:14px;color:var(--t2);font-weight:500;}
.nav-quick:hover{color:var(--brand);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-sm);
  border:1px solid var(--line-2);background:#fff;color:var(--t1);
  font-size:16px;cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

/* ===== 6. Hero ===== */
.page-hero{
  background:linear-gradient(180deg,#F7FAFF 0%,#FFFFFF 100%);
  padding:40px 0 56px;
  border-bottom:1px solid var(--line);
}
.page-hero .grid-x{align-items:center;}
.crumb{font-size:14px;color:var(--t3);margin-bottom:22px;display:flex;flex-wrap:wrap;gap:6px;align-items:center;}
.crumb a{color:var(--t3);}
.crumb a:hover{color:var(--brand);}
.crumb span.sep{color:var(--t4);}
.crumb .current{color:var(--brand);font-weight:600;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:28px;padding:0 14px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:600;margin-bottom:18px;
}
.hero-eyebrow i{font-size:11px;}
.page-hero h1{
  font-size:40px;font-weight:700;letter-spacing:.3px;line-height:1.25;
  margin-bottom:16px;color:var(--t1);
}
.page-hero h1 em{font-style:normal;color:var(--brand);}
.hero-lead{font-size:17px;line-height:1.8;color:var(--t2);max-width:640px;}
.hero-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:26px;}
.hero-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px;}
.hero-tabs a{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;
  border-radius:999px;background:#fff;border:1px solid var(--line-2);
  font-size:14px;color:var(--t2);font-weight:500;
}
.hero-tabs a:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card);
  box-shadow:var(--sh-2);
}
.hero-float{
  position:absolute;left:-18px;bottom:-22px;width:230px;
  background:#fff;border-radius:var(--r-card);box-shadow:var(--sh-3);
  padding:12px;display:flex;gap:10px;align-items:center;
  border:1px solid var(--line);
}
.hero-float img{width:56px;height:56px;aspect-ratio:1/1;object-fit:cover;border-radius:10px;box-shadow:none;}
.hero-float .hf-num{font-size:20px;font-weight:700;color:var(--brand);line-height:1.1;}
.hero-float .hf-txt{font-size:12px;color:var(--t3);line-height:1.5;}

/* ===== 7. 能力 bento ===== */
.bento-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:30px;height:100%;
  transition:transform .22s ease,box-shadow .22s ease;
  display:flex;flex-direction:column;
}
.bento-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.bento-card .icon-box{
  width:46px;height:46px;border-radius:12px;background:var(--brand-soft);
  color:var(--brand);display:flex;align-items:center;justify-content:center;
  font-size:18px;margin-bottom:18px;
}
.bento-card h3{font-size:20px;font-weight:600;margin-bottom:12px;}
.bento-card p{font-size:15px;line-height:1.8;color:var(--t2);}
.bento-card.lg{padding:34px;}
.bento-card.lg h3{font-size:24px;}
.bento-card.lg img{width:100%;aspect-ratio:4/3;object-fit:cover;margin:22px 0 20px;}
.bento-card.sm{padding:24px;}
.bento-card.sm h3{font-size:17px;margin-bottom:8px;}
.bento-card.sm p{font-size:14px;line-height:1.75;color:var(--t3);}
.bento-card .card-foot{margin-top:auto;padding-top:18px;}
.mini-list li{
  display:flex;align-items:flex-start;gap:10px;
  padding:14px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--t2);
}
.mini-list li:last-child{border-bottom:0;padding-bottom:0;}
.mini-list i{color:var(--brand);font-size:13px;margin-top:4px;}

/* ===== 8. 流程步骤 ===== */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.flow-item{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:26px 24px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease;
}
.flow-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.flow-item .step-no{
  font-size:13px;font-weight:700;color:var(--accent);letter-spacing:1px;
  display:block;margin-bottom:10px;
}
.flow-item h3{font-size:17px;font-weight:600;margin-bottom:10px;}
.flow-item p{font-size:14px;line-height:1.75;color:var(--t2);}

/* ===== 9. 对比表 ===== */
.table-scroll{overflow-x:auto;border-radius:var(--r-card);border:1px solid var(--line);background:#fff;}
table.cmp{min-width:680px;font-size:15px;}
table.cmp thead th{
  background:var(--brand);color:#fff;font-weight:600;font-size:15px;
  padding:16px 22px;text-align:left;border:0;
}
table.cmp thead th:first-child{background:var(--brand-ink);}
table.cmp tbody td{
  padding:16px 22px;border-bottom:1px solid var(--line);color:var(--t2);vertical-align:middle;
}
table.cmp tbody tr:nth-child(even){background:#F7FAFF;}
table.cmp tbody tr:last-child td{border-bottom:0;}
table.cmp tbody td:first-child{color:var(--t1);font-weight:600;}
table.cmp .tag{color:var(--brand);font-weight:600;}
table.cmp .tag-muted{color:var(--t3);}

/* ===== 10. FAQ ===== */
.faq-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:10px 28px;box-shadow:var(--sh-1);}
.accordion{border:0;background:transparent;margin:0;}
.accordion .accordion-item{border:0;border-bottom:1px solid var(--line);}
.accordion .accordion-item:last-child{border-bottom:0;}
.accordion .accordion-title{
  position:relative;display:block;padding:22px 56px 22px 0;
  font-size:17px;font-weight:600;color:var(--t1);border:0;background:transparent;
}
.accordion .accordion-title:hover{color:var(--brand);}
.accordion .accordion-title::before{
  content:"+";position:absolute;right:0;top:50%;margin:0;transform:translateY(-50%);
  width:26px;height:26px;border-radius:50%;border:1px solid var(--line-2);
  color:var(--brand);font-size:16px;font-weight:600;line-height:1;
  display:flex;align-items:center;justify-content:center;background:#fff;
}
.accordion .accordion-title[aria-expanded="true"]::before{content:"–";background:var(--brand);color:#fff;border-color:var(--brand);}
.accordion .accordion-content{padding:0 56px 22px 0;border:0;background:transparent;font-size:15px;line-height:1.85;color:var(--t2);}

/* ===== 11. CTA 与表单 ===== */
.cta-band{background:var(--brand-ink);padding:76px 0;}
.cta-band h2{color:#fff;font-size:30px;font-weight:600;margin-bottom:16px;}
.cta-band .cta-lead{color:#C7D6EE;font-size:16px;line-height:1.8;max-width:520px;}
.check-list{margin-top:26px;display:grid;gap:12px;}
.check-list li{display:flex;align-items:flex-start;gap:10px;color:#E3ECFB;font-size:15px;}
.check-list i{color:var(--accent);margin-top:5px;font-size:13px;}
.form-card{
  background:#fff;border-radius:var(--r-card);box-shadow:var(--sh-3);
  padding:32px;
}
.form-card h3{font-size:20px;font-weight:600;margin-bottom:6px;}
.form-card .form-note{font-size:13px;color:var(--t3);margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--t1);margin-bottom:8px;}
.field label .req{color:var(--brand);margin-left:2px;}
.field input,.field select,.field textarea{
  width:100%;height:44px;border:1px solid var(--line-2);border-radius:var(--r-sm);
  padding:0 14px;font-size:15px;font-family:var(--font);color:var(--t1);
  background:#fff;outline:none;transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:96px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);box-shadow:0 0 0 2px rgba(27,87,200,.16);
}
.field input::placeholder,.field textarea::placeholder{color:var(--t4);}
.form-foot{margin-top:14px;font-size:12px;color:var(--t3);line-height:1.7;}
.form-msg{margin-top:12px;font-size:14px;color:var(--up);font-weight:600;min-height:20px;}

/* ===== 12. 页脚 ===== */
.site-footer{
  background:#0B2043;border-top:2px solid var(--brand);
  padding:64px 0 0;color:#C7D6EE;
}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--brand);}
.footer-brand .brand-text strong{color:#fff;}
.footer-brand .brand-text em{color:#8FB4F0;}
.footer-desc{font-size:14px;line-height:1.8;color:#9FB4D6;max-width:300px;}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul li a{color:#C7D6EE;font-size:14px;}
.footer-col ul li a:hover{color:#fff;}
.footer-contact li{display:flex;align-items:center;gap:10px;font-size:14px;color:#C7D6EE;margin-bottom:12px;}
.footer-contact i{color:#8FB4F0;width:16px;text-align:center;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(199,214,238,.18);
  padding:20px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8FA7CC;
}
.footer-bottom a{color:#C7D6EE;}
.footer-bottom a:hover{color:#fff;}

/* ===== 13. 响应式 ===== */
@media (min-width:1440px){
  .grid-container{max-width:1280px;}
}
@media (max-width:1023px){
  :root{--sec-y:72px;}
  .nav-toggle{display:inline-flex;}
  .command-search,.nav-quick{display:none;}
  .main-nav{
    display:none;
    position:fixed;left:0;right:0;top:70px;bottom:0;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:20px 24px 40px;overflow-y:auto;z-index:90;
    box-shadow:0 18px 40px rgba(15,29,51,.12);
  }
  .main-nav.open{display:flex;}
  .main-nav a{
    font-size:17px;padding:16px 0;border-bottom:1px solid var(--line);font-weight:500;
  }
  .main-nav a::after{display:none;}
  .main-nav a.active{color:var(--brand);}
  .mobile-search{
    display:flex;align-items:center;gap:10px;height:46px;
    background:#F2F6FC;border-radius:var(--r-sm);padding:0 14px;margin-bottom:18px;
  }
  .mobile-search i{color:var(--t3);}
  .mobile-search input{flex:1;border:0;background:transparent;outline:none;font-size:15px;font-family:var(--font);color:var(--t1);}
  .nav-tools .btn{height:38px;}
  .page-hero h1{font-size:32px;}
  .sec-title{font-size:26px;}
  .cta-band h2{font-size:26px;}
  .flow-grid{grid-template-columns:repeat(2,1fr);}
  .hero-media{margin-top:34px;}
  .hero-float{left:auto;right:12px;bottom:-18px;}
}
@media (max-width:639px){
  :root{--sec-y:48px;}
  .grid-container{padding-left:16px;padding-right:16px;}
  .nav-wrap{height:62px;gap:12px;}
  .main-nav{top:62px;padding:16px;}
  .brand-text{font-size:16px;}
  .brand-text em{font-size:13px;}
  .brand-mark{width:32px;height:32px;font-size:12px;}
  .page-hero{padding:24px 0 40px;}
  .page-hero h1{font-size:26px;}
  .hero-lead{font-size:15px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{width:100%;}
  .hero-tabs a{height:34px;padding:0 13px;font-size:13px;}
  .sec-title{font-size:22px;}
  .sec-sub{font-size:14px;}
  .bento-card,.bento-card.lg{padding:22px;}
  .flow-grid{grid-template-columns:1fr;}
  .cta-band{padding:48px 0;}
  .form-card{padding:22px;margin-top:28px;}
  .faq-wrap{padding:6px 18px;}
  .accordion .accordion-title{font-size:16px;padding-right:44px;}
  .accordion .accordion-content{padding-right:0;}
  .hero-float{width:200px;padding:10px;}
  .footer-bottom{flex-direction:column;gap:10px;}
}

/* roulang page: category2 */
:root{
  --brand:#1B57C8;
  --brand-dark:#1546A6;
  --brand-ink:#0F3676;
  --brand-soft:#EDF3FE;
  --accent:#FF6A2B;
  --page-bg:#F5F8FD;
  --card:#FFFFFF;
  --band:#EEF3FB;
  --line:#E3EAF5;
  --line-2:#DCE5F2;
  --ink:#0F1D33;
  --text:#44546B;
  --muted:#7A8AA3;
  --disabled:#A9B6C9;
  --up:#1FA971;
  --down:#E5484D;
  --radius-lg:16px;
  --radius-md:10px;
  --radius-sm:8px;
  --shadow-1:0 2px 6px rgba(15,29,51,.04);
  --shadow-2:0 12px 28px rgba(15,29,51,.10);
  --shadow-3:0 18px 40px rgba(15,29,51,.12);
  --section-y:88px;
}

/* 基础排版 */
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--page-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0;color:var(--ink);font-weight:600;line-height:1.3;}
p{margin:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
input,select,textarea{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

/* 容器 */
.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;}
@media screen and (min-width:1440px){
  .grid-container{max-width:1280px;}
}

/* 通用区块 */
.section{padding:var(--section-y) 0;}
.section-alt{background:var(--band);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:36px;}
.section-head h2{font-size:32px;font-weight:600;position:relative;padding-left:16px;letter-spacing:-.2px;}
.section-head h2::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:22px;border-radius:2px;background:var(--brand);}
.section-head p{margin-top:10px;font-size:15px;color:var(--muted);}
.section-head .head-text{max-width:760px;}
.section-head .head-link{font-size:15px;font-weight:500;display:inline-flex;align-items:center;gap:6px;}
.section-head .head-link i{font-size:12px;transition:transform .2s ease;}
.section-head .head-link:hover i{transform:translateX(3px);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border:1px solid transparent;border-radius:var(--radius-md);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 2px 6px rgba(27,87,200,.18);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px rgba(27,87,200,.28);}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 6px rgba(27,87,200,.2);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--line-2);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:#C9D9F5;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;height:48px;}

/* 徽章与标签 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;background:var(--brand-soft);color:var(--brand);
  font-size:12.5px;font-weight:600;line-height:1.4;
}
.badge-hot{background:#FFF1EA;color:var(--accent);}
.badge-line{background:#fff;border:1px solid var(--line-2);color:var(--text);font-weight:500;}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:70;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(15,29,51,.06);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:10px;background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;letter-spacing:.5px;
}
.brand-text{display:flex;align-items:baseline;gap:2px;line-height:1;}
.brand-text strong{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.2px;}
.brand-text em{font-style:normal;font-size:15px;font-weight:600;color:var(--brand);}
.main-nav{display:flex;align-items:center;gap:26px;}
.main-nav a{
  position:relative;padding:6px 0;font-size:15px;color:var(--text);white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;border-radius:2px;
  background:var(--brand);transition:width .22s ease;
}
.main-nav a:hover{color:var(--brand);}
.main-nav a:hover::after{width:100%;}
.main-nav a.active{color:var(--brand);font-weight:600;}
.main-nav a.active::after{width:100%;}
.mobile-search{display:none;}
.nav-tools{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.command-search{
  display:flex;align-items:center;gap:8px;height:36px;width:240px;
  padding:0 10px;background:#F2F6FC;border:1px solid var(--line);border-radius:var(--radius-md);
  transition:border-color .2s ease,background-color .2s ease;
}
.command-search:focus-within{background:#fff;border-color:var(--brand);}
.command-search i{font-size:13px;color:var(--muted);}
.command-search input{
  flex:1;min-width:0;border:none;background:transparent;outline:none;font-size:14px;color:var(--ink);
}
.command-search input::placeholder{color:var(--muted);}
.command-search kbd{
  font-family:inherit;font-size:11px;color:var(--muted);
  background:#fff;border:1px solid var(--line-2);border-radius:6px;padding:1px 6px;line-height:1.5;
}
.nav-quick{font-size:14px;color:var(--text);white-space:nowrap;}
.nav-quick:hover{color:var(--brand);}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line-2);border-radius:var(--radius-md);
  background:#fff;color:var(--ink);align-items:center;justify-content:center;font-size:16px;
}

/* 分类页 Hero */
.hero-page{
  position:relative;overflow:hidden;
  padding:36px 0 52px;
  background:linear-gradient(180deg,#F7FAFF 0%,#FFFFFF 100%);
  border-bottom:1px solid var(--line);
}
.hero-page::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.10;
}
.hero-page::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,#FFFFFF 0%,rgba(255,255,255,.86) 55%,rgba(255,255,255,.55) 100%);
}
.hero-page .grid-container{position:relative;z-index:2;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin-bottom:20px;flex-wrap:wrap;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--disabled);}
.breadcrumb .current{color:var(--brand);font-weight:600;}
.hero-page-grid{display:flex;align-items:center;gap:40px;}
.hero-page-main{flex:1 1 auto;min-width:0;}
.hero-page h1{font-size:40px;font-weight:700;line-height:1.28;letter-spacing:-.6px;margin:16px 0 14px;}
.hero-page .hero-lead{max-width:620px;font-size:16.5px;color:var(--text);}
.hero-side{flex:0 0 320px;position:relative;}
.hero-side-img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-lg);
  box-shadow:var(--shadow-2);
}
.hero-side-card{
  position:absolute;right:-12px;bottom:-18px;min-width:210px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-3);padding:16px 18px;
}
.hero-side-card .sc-label{font-size:13px;color:var(--muted);}
.hero-side-card .sc-value{
  font-size:30px;font-weight:700;color:var(--ink);line-height:1.2;
  font-variant-numeric:tabular-nums;letter-spacing:-.5px;
}
.hero-side-card .sc-value span{font-size:14px;font-weight:600;color:var(--muted);margin-left:2px;}
.hero-side-card .sc-note{font-size:12.5px;color:var(--up);font-weight:600;}

/* 锚点 Tab */
.anchor-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.anchor-tabs a{
  display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:999px;
  background:#fff;border:1px solid var(--line-2);color:var(--text);font-size:14px;
  transition:all .2s ease;
}
.anchor-tabs a:hover{background:var(--brand-soft);border-color:#C9D9F5;color:var(--brand);transform:translateY(-1px);}

/* 指标看板 */
.metric-card{
  display:flex;flex-direction:column;justify-content:space-between;gap:16px;height:100%;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:22px;box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.metric-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D3E0F6;}
.metric-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.metric-icon{
  width:34px;height:34px;border-radius:var(--radius-md);background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:14px;
}
.metric-value{
  font-size:40px;font-weight:700;color:var(--ink);line-height:1;
  font-variant-numeric:tabular-nums;letter-spacing:-1px;
}
.metric-value .unit{font-size:15px;font-weight:600;color:var(--muted);margin-left:4px;letter-spacing:0;}
.metric-name{font-size:15px;color:var(--text);font-weight:500;}
.metric-foot{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding-top:12px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);
}
.metric-foot .up{color:var(--up);font-weight:600;}
.metric-foot .flat{color:var(--muted);}

/* 图表区 */
.chart-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px;box-shadow:var(--shadow-1);height:100%;
}
.chart-card h3{font-size:19px;font-weight:600;margin-bottom:6px;}
.chart-card .chart-sub{font-size:13.5px;color:var(--muted);margin-bottom:22px;}
.chart-bars{display:flex;align-items:flex-end;gap:14px;height:220px;}
.bar-item{flex:1;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;height:100%;gap:10px;}
.bar-val{font-size:12.5px;font-weight:600;color:var(--text);font-variant-numeric:tabular-nums;}
.bar-track{width:100%;max-width:44px;height:100%;display:flex;align-items:flex-end;}
.bar{
  width:100%;border-radius:10px 10px 4px 4px;
  background:linear-gradient(180deg,#4C82E0 0%,#1B57C8 100%);
  transition:filter .2s ease,transform .2s ease;
  transform-origin:bottom;
}
.bar-item:hover .bar{filter:brightness(1.08);transform:scaleY(1.02);}
.bar-1{height:46%;}
.bar-2{height:62%;}
.bar-3{height:54%;}
.bar-4{height:78%;}
.bar-5{height:66%;}
.bar-6{height:88%;}
.bar-7{height:72%;}
.bar-label{font-size:12.5px;color:var(--muted);white-space:nowrap;}

.donut-wrap{display:flex;align-items:center;gap:26px;flex-wrap:wrap;}
.donut{
  width:168px;height:168px;border-radius:50%;flex-shrink:0;position:relative;
  background:conic-gradient(from -90deg,#1B57C8 0 62%,#4C82E0 62% 88%,#BBD1F6 88% 100%);
}
.donut::after{
  content:"";position:absolute;inset:26px;border-radius:50%;background:#fff;
  box-shadow:inset 0 0 0 1px var(--line);
}
.donut-center{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;
  z-index:2;text-align:center;
}
.donut-center strong{font-size:24px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;line-height:1.1;}
.donut-center span{font-size:12.5px;color:var(--muted);}
.legend{flex:1;min-width:180px;display:flex;flex-direction:column;gap:14px;}
.legend-item{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text);}
.legend-dot{width:10px;height:10px;border-radius:3px;flex-shrink:0;}
.dot-1{background:#1B57C8;}
.dot-2{background:#4C82E0;}
.dot-3{background:#BBD1F6;}
.legend-item b{margin-left:auto;color:var(--ink);font-variant-numeric:tabular-nums;}

/* 口径说明行式列表 */
.data-list{border-top:1px solid var(--line);}
.data-row{
  display:grid;grid-template-columns:240px 1fr;gap:28px;align-items:start;
  padding:22px 0;border-bottom:1px solid var(--line);
}
.data-row h3{font-size:16.5px;font-weight:600;color:var(--ink);display:flex;align-items:center;gap:10px;}
.data-row h3 i{font-size:13px;color:var(--brand);}
.data-row p{font-size:15px;color:var(--text);}

/* 接入流程 */
.step-card{
  height:100%;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px;box-shadow:var(--shadow-1);transition:transform .22s ease,box-shadow .22s ease;
}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:32px;height:32px;border-radius:50%;background:var(--brand-soft);color:var(--brand);
  font-weight:700;font-size:14px;margin-bottom:14px;font-variant-numeric:tabular-nums;
}
.step-card h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.step-card p{font-size:14.5px;color:var(--muted);}

/* FAQ */
.faq-wrap{display:flex;gap:48px;align-items:flex-start;}
.faq-aside{flex:0 0 300px;}
.faq-aside h2{font-size:30px;font-weight:600;position:relative;padding-left:16px;margin-bottom:12px;}
.faq-aside h2::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:22px;border-radius:2px;background:var(--brand);}
.faq-aside p{font-size:15px;color:var(--muted);}
.faq-main{flex:1;min-width:0;}
ul.accordion{border:none;background:transparent;margin:0;}
ul.accordion li.accordion-item{
  border:1px solid var(--line);border-radius:14px;background:#fff;margin-bottom:12px;overflow:hidden;
  box-shadow:var(--shadow-1);transition:box-shadow .2s ease,border-color .2s ease;
}
ul.accordion li.accordion-item:hover{border-color:#D3E0F6;box-shadow:var(--shadow-2);}
.accordion-title{
  position:relative;display:block;padding:18px 58px 18px 22px;
  font-size:16.5px;font-weight:600;color:var(--ink);border:none;background:transparent;
  line-height:1.5;
}
.accordion-title:hover{background:#FAFCFF;color:var(--brand);}
.accordion-title::before{
  content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;border-radius:50%;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:600;margin:0;
  list-style:none;
}
.accordion-title[aria-expanded="true"]::before{content:"−";background:var(--brand);color:#fff;}
.accordion-title[aria-expanded="true"]{color:var(--brand);}
.accordion-content{
  border:none!important;background:transparent!important;padding:0 22px 20px!important;
  font-size:15px;color:var(--text);line-height:1.75;border-top:1px dashed var(--line)!important;
  padding-top:16px!important;
}

/* CTA 与表单 */
.cta-band{
  background:var(--brand-ink);border-radius:20px;padding:48px;
  color:#fff;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:rgba(255,255,255,.05);
}
.cta-grid{position:relative;z-index:2;display:flex;gap:48px;align-items:flex-start;flex-wrap:wrap;}
.cta-info{flex:1 1 320px;min-width:280px;}
.cta-info h2{color:#fff;font-size:30px;font-weight:600;margin-bottom:14px;letter-spacing:-.2px;}
.cta-info p{color:#C7D6EE;font-size:15.5px;margin-bottom:24px;}
.cta-points{display:flex;flex-direction:column;gap:14px;}
.cta-points li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:#DCE7F8;}
.cta-points i{color:#7FA9F0;margin-top:5px;font-size:13px;}
.cta-form-card{
  flex:0 1 480px;min-width:300px;background:#fff;border-radius:var(--radius-lg);
  padding:30px;box-shadow:var(--shadow-3);
}
.cta-form-card h3{font-size:20px;font-weight:600;margin-bottom:6px;}
.cta-form-card .form-note{font-size:13.5px;color:var(--muted);margin-bottom:22px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:7px;}
.field label .req{color:var(--brand);margin-left:2px;}
.field input,.field select,.field textarea{
  width:100%;height:44px;padding:0 14px;color:var(--ink);
  background:#fff;border:1px solid var(--line-2);border-radius:var(--radius-md);
  outline:none;transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:auto;min-height:96px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);box-shadow:0 0 0 3px rgba(27,87,200,.14);
}
.field input::placeholder,.field textarea::placeholder{color:var(--disabled);}
.form-foot{font-size:12.5px;color:var(--muted);margin-top:12px;line-height:1.6;}

/* 页脚 */
.site-footer{
  background:#0B2043;color:#C7D6EE;margin-top:0;padding:0;
  border-top:2px solid var(--brand);
}
.site-footer .grid-container{padding-top:56px;padding-bottom:0;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--brand);color:#fff;}
.footer-brand .brand-text strong{color:#fff;}
.footer-brand .brand-text em{color:#8FB4F2;}
.footer-desc{font-size:14px;color:#9FB4D4;line-height:1.8;max-width:300px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col ul a{color:#C7D6EE;font-size:14px;}
.footer-col ul a:hover{color:#fff;}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:#C7D6EE;}
.footer-contact i{color:#7FA9F0;margin-top:5px;font-size:13px;}
.footer-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid rgba(255,255,255,.10);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8FA6C8;
}
.footer-bottom a{color:#C7D6EE;}
.footer-bottom a:hover{color:#fff;}

/* 响应式 */
@media screen and (max-width:1023px){
  :root{--section-y:72px;}
  .command-search{display:none;}
  .nav-quick{display:none;}
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:absolute;top:68px;left:0;right:0;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--line);
    padding:16px 24px 24px;box-shadow:0 18px 40px rgba(15,29,51,.12);
  }
  .main-nav.is-open{display:flex;}
  .main-nav a{padding:14px 0;border-bottom:1px solid var(--line);font-size:16px;}
  .main-nav a::after{display:none;}
  .main-nav a.active{color:var(--brand);}
  .mobile-search{
    display:flex;align-items:center;gap:10px;height:44px;padding:0 14px;margin-bottom:12px;
    background:#F2F6FC;border:1px solid var(--line);border-radius:var(--radius-md);
  }
  .mobile-search i{color:var(--muted);font-size:14px;}
  .mobile-search input{flex:1;border:none;background:transparent;outline:none;font-size:15px;}
  .hero-page h1{font-size:32px;}
  .hero-page-grid{flex-direction:column;align-items:stretch;gap:28px;}
  .hero-side{flex:1 1 auto;max-width:420px;}
  .hero-side-card{right:12px;bottom:-14px;}
  .section-head h2{font-size:26px;}
  .faq-wrap{flex-direction:column;gap:28px;}
  .faq-aside{flex:1 1 auto;}
  .data-row{grid-template-columns:1fr;gap:8px;}
  .cta-band{padding:36px;}
}
@media screen and (max-width:767px){
  :root{--section-y:48px;}
  body{font-size:15.5px;}
  .grid-container{padding-left:16px;padding-right:16px;}
  .nav-wrap{height:62px;}
  .main-nav{top:62px;padding:14px 16px 20px;}
  .brand-text strong{font-size:16px;}
  .brand-text em{font-size:14px;}
  .hero-page{padding:26px 0 42px;}
  .hero-page h1{font-size:27px;margin:12px 0 12px;}
  .hero-page .hero-lead{font-size:15.5px;}
  .anchor-tabs{gap:8px;}
  .anchor-tabs a{height:34px;padding:0 13px;font-size:13px;}
  .section-head h2{font-size:22px;}
  .section-head p{font-size:14px;}
  .metric-card{padding:18px;}
  .metric-value{font-size:30px;letter-spacing:-.6px;}
  .metric-name{font-size:14px;}
  .chart-card{padding:20px;}
  .chart-bars{height:170px;gap:8px;}
  .bar-val{font-size:11px;}
  .donut{width:140px;height:140px;}
  .donut::after{inset:22px;}
  .data-row{padding:18px 0;}
  .cta-band{padding:28px;border-radius:16px;}
  .cta-info h2{font-size:23px;}
  .cta-form-card{padding:22px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .accordion-title{font-size:15.5px;padding:16px 52px 16px 18px;}
}
@media screen and (max-width:519px){
  .hero-side{max-width:100%;}
  .hero-side-card{position:static;margin-top:14px;right:auto;bottom:auto;box-shadow:var(--shadow-1);}
  .metric-value{font-size:26px;}
  .metric-foot{font-size:12px;}
  .bar-label{font-size:11px;}
  .donut-wrap{gap:18px;}
  .legend-item{font-size:13px;}
}

/* roulang page: category3 */
/* ============ 1. 设计变量层 ============ */
:root{
  --brand:#1B57C8;
  --brand-dark:#1546A6;
  --brand-ink:#0F3676;
  --brand-soft:#EDF3FE;
  --accent:#FF6A2B;
  --page:#F5F8FD;
  --card:#FFFFFF;
  --alt:#EEF3FB;
  --line:#E3EAF5;
  --line-2:#DCE5F2;
  --title:#0F1D33;
  --text:#44546B;
  --muted:#7A8AA3;
  --disabled:#A9B6C9;
  --up:#1FA971;
  --down:#E5484D;
  --deep:#0B2043;
  --r-xl:20px;
  --r-lg:16px;
  --r-md:10px;
  --r-sm:8px;
  --pill:999px;
  --sh-1:0 2px 6px rgba(15,29,51,.04);
  --sh-2:0 12px 28px rgba(15,29,51,.10);
  --sh-3:0 18px 40px rgba(15,29,51,.12);
  --sec-y:88px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}

/* ============ 2. reset 与基础排版 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--page);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6{
  margin:0 0 12px;
  font-family:var(--font);
  color:var(--title);
  font-weight:700;
  letter-spacing:.2px;
}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,transform .2s ease;}
a:hover{color:var(--brand-dark);}
img{max-width:100%;height:auto;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
strong{font-weight:700;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

/* Foundation 默认样式覆盖 */
body,.button,.menu,.accordion,.tabs,.card{font-family:var(--font);}
a.button,button.button,.button{
  border-radius:var(--r-md);
  background:var(--brand);
  font-weight:600;
  letter-spacing:.3px;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
a.button:hover,button.button:hover,.button:hover{background:var(--brand-dark);}
.accordion{border:none;background:transparent;}
.accordion-title{border:none;background:transparent;}
table{border-collapse:collapse;}

/* ============ 3. 容器与栅格微调 ============ */
.grid-container{
  max-width:1200px;
  padding-left:24px;
  padding-right:24px;
  margin-left:auto;
  margin-right:auto;
}
@media (min-width:1440px){
  .grid-container{max-width:1280px;}
}
.grid-x{margin-left:-16px;margin-right:-16px;}
.grid-x>.cell{padding-left:16px;padding-right:16px;}
.grid-margin-x{margin-left:-16px;margin-right:-16px;}
.grid-margin-x>.cell{margin-left:0;margin-right:0;padding-left:16px;padding-right:16px;}
.grid-margin-y{margin-top:-16px;}
.grid-margin-y>.cell{margin-top:16px;}

/* ============ 4. 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(15,29,51,.06);}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:72px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:var(--brand);
  color:#fff;font-size:13px;font-weight:700;letter-spacing:.5px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px rgba(27,87,200,.26);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;color:var(--title);font-weight:700;}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted);letter-spacing:1.2px;}
.main-nav{
  display:flex;
  align-items:center;
  gap:28px;
  margin-left:12px;
  flex:1 1 auto;
}
.main-nav a{
  position:relative;
  font-size:15px;
  color:var(--text);
  padding:6px 0;
  white-space:nowrap;
  font-weight:500;
}
.main-nav a::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
}
.main-nav a:hover{color:var(--brand);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.active{color:var(--brand);font-weight:600;}
.main-nav a.active::after{transform:scaleX(1);}
.mobile-search{display:none;}
.nav-tools{display:flex;align-items:center;gap:14px;flex:0 0 auto;}
.command-search{
  display:flex;align-items:center;gap:8px;
  width:240px;height:36px;
  padding:0 10px;
  background:#F2F6FC;
  border:1px solid transparent;
  border-radius:var(--r-md);
  transition:border-color .2s ease,background .2s ease;
}
.command-search:focus-within{background:#fff;border-color:var(--brand);}
.command-search i{color:var(--muted);font-size:13px;}
.command-search input{
  flex:1;min-width:0;border:none;background:transparent;outline:none;
  font-size:13px;color:var(--text);
}
.command-search input::placeholder{color:var(--disabled);}
.command-search kbd{
  font-family:var(--font);font-size:11px;color:var(--muted);
  background:#fff;border:1px solid var(--line-2);border-radius:5px;
  padding:1px 6px;line-height:1.5;
}
.nav-quick{
  font-size:13px;font-weight:600;color:var(--brand);
  display:inline-flex;align-items:center;gap:4px;
}
.nav-quick::after{content:"›";transition:transform .2s ease;display:inline-block;}
.nav-quick:hover::after{transform:translateX(2px);}
.nav-toggle{
  display:none;
  width:40px;height:40px;border-radius:var(--r-md);
  border:1px solid var(--line-2);background:#fff;color:var(--brand);
  font-size:16px;cursor:pointer;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-md);
  font-weight:600;
  font-size:15px;
  padding:0 22px;
  height:46px;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px rgba(27,87,200,.28);}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 10px rgba(27,87,200,.2);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--line-2);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand-soft);}
.btn-line{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn-line:hover{background:var(--brand);color:#fff;}
.btn-sm{height:38px;font-size:14px;padding:0 18px;}

/* ============ 5. Hero ============ */
.hero{
  background:linear-gradient(180deg,#F7FAFF 0%,#FFFFFF 100%);
  border-bottom:1px solid var(--line);
  padding:34px 0 56px;
}
.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--muted);
  margin-bottom:18px;
}
.breadcrumbs a{color:var(--muted);}
.breadcrumbs a:hover{color:var(--brand);}
.breadcrumbs .sep{color:var(--line-2);}
.breadcrumbs .current{color:var(--brand);font-weight:600;}
.hero-grid{display:flex;flex-wrap:wrap;align-items:center;}
.hero-copy{flex:1 1 520px;max-width:640px;}
.hero-visual{flex:1 1 380px;position:relative;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:600;
  padding:5px 14px;border-radius:var(--pill);
  margin-bottom:16px;
}
.eyebrow i{font-size:11px;}
.hero h1{
  font-size:44px;
  line-height:1.25;
  margin:0 0 16px;
  letter-spacing:.5px;
}
.hero-lead{
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  max-width:36em;
  margin-bottom:24px;
}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-bottom:26px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--brand);
}
.link-arrow i{transition:transform .2s ease;font-size:12px;}
.link-arrow:hover i{transform:translateX(3px);}
.trust-row{
  display:flex;flex-wrap:wrap;gap:24px;
  font-size:13px;color:var(--muted);
  padding-top:18px;border-top:1px dashed var(--line-2);
}
.trust-row span{display:inline-flex;align-items:center;gap:7px;}
.trust-row i{color:var(--brand);font-size:12px;}
.hero-frame{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-2);
  background:var(--alt);
  aspect-ratio:16/10;
}
.hero-frame img{width:100%;height:100%;object-fit:cover;}
.hero-float{
  position:absolute;right:-8px;bottom:-22px;
  display:flex;align-items:center;gap:12px;
  background:#fff;border-radius:14px;
  padding:12px 16px;
  box-shadow:var(--sh-3);
  max-width:296px;
}
.hero-float img{width:56px;height:56px;border-radius:10px;object-fit:cover;flex:0 0 auto;}
.hero-float .num{font-size:22px;font-weight:700;color:var(--title);line-height:1.1;font-variant-numeric:tabular-nums;}
.hero-float .num em{font-style:normal;font-size:12px;color:var(--up);margin-left:6px;font-weight:600;}
.hero-float small{display:block;font-size:12px;color:var(--muted);line-height:1.5;}
.hero-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px;}
.tab-chip{
  font-size:13px;font-weight:600;color:var(--text);
  background:#fff;border:1px solid var(--line-2);
  border-radius:var(--pill);
  padding:7px 16px;
  transition:all .2s ease;
}
.tab-chip:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-soft);}

/* ============ 6. 通用板块 ============ */
.section{padding:var(--sec-y) 0;}
.section-alt{background:var(--alt);}
.section-white{background:#fff;}
.sec-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:16px;margin-bottom:32px;
}
.sec-title{
  position:relative;
  padding-left:16px;
  font-size:32px;
  line-height:1.3;
  margin:0;
}
.sec-title::before{
  content:"";position:absolute;left:0;top:.34em;
  width:4px;height:20px;border-radius:2px;background:var(--brand);
}
.sec-sub{font-size:15px;color:var(--muted);margin:10px 0 0;padding-left:16px;max-width:44em;}
.sec-note{font-size:14px;color:var(--muted);}

/* ============ 7. 资讯卡片族 ============ */
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  display:flex;
  flex-direction:column;
  height:100%;
  overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--line-2);}
.thumb{
  position:relative;
  aspect-ratio:16/10;
  background:var(--alt);
  overflow:hidden;
}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.card:hover .thumb img{transform:scale(1.04);}
.thumb-tag{
  position:absolute;left:12px;top:12px;
  background:rgba(255,255,255,.94);
  color:var(--brand);
  font-size:12px;font-weight:600;
  padding:4px 12px;border-radius:var(--pill);
  backdrop-filter:blur(2px);
}
.thumb-tag.hot{background:var(--accent);color:#fff;}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-title{
  font-size:17px;line-height:1.5;font-weight:600;color:var(--title);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s ease;
}
.card:hover .card-title{color:var(--brand);}
.card-text{
  font-size:14px;line-height:1.75;color:var(--muted);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;
  padding-top:12px;
  border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.card-foot .cat{color:var(--brand);font-weight:600;}
.card-foot a{font-weight:600;display:inline-flex;align-items:center;gap:5px;}
.card-foot a i{font-size:11px;transition:transform .2s ease;}
.card-foot a:hover i{transform:translateX(3px);}

/* 精选大卡 */
.feature-card .thumb{aspect-ratio:16/9;}
.feature-card .card-title{font-size:22px;-webkit-line-clamp:2;}
.feature-card .card-text{-webkit-line-clamp:3;font-size:15px;}

/* 横向封面墙 */
.wall{display:flex;gap:16px;overflow-x:auto;padding:4px 4px 18px;scroll-snap-type:x mandatory;}
.wall::-webkit-scrollbar{height:6px;}
.wall::-webkit-scrollbar-thumb{background:var(--line-2);border-radius:3px;}
.wall-item{flex:0 0 340px;scroll-snap-align:start;}

/* ============ 8. 热门排行（深色区） ============ */
.rank-band{
  background:var(--deep);
  border-top:2px solid var(--brand);
  padding:72px 0;
  color:#C7D6EE;
}
.rank-band .sec-title{color:#fff;}
.rank-band .sec-sub{color:#9FB4D6;}
.rank-list{border-top:1px solid rgba(199,214,238,.18);}
.rank-item{
  display:flex;align-items:center;gap:18px;
  padding:20px 4px;
  border-bottom:1px solid rgba(199,214,238,.18);
  transition:background .2s ease,padding-left .2s ease;
}
.rank-item:hover{background:rgba(255,255,255,.04);padding-left:12px;}
.rank-no{
  flex:0 0 38px;height:38px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;
  background:rgba(255,255,255,.08);color:#fff;
  font-variant-numeric:tabular-nums;
}
.rank-item:nth-child(-n+3) .rank-no{background:var(--accent);color:#fff;}
.rank-main{flex:1 1 auto;min-width:0;}
.rank-main a{
  display:block;color:#fff;font-size:16px;font-weight:600;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.rank-main a:hover{color:#9FC2FF;}
.rank-main small{font-size:13px;color:#8FA6C9;}
.rank-meta{flex:0 0 auto;font-size:13px;color:#8FA6C9;display:flex;gap:16px;align-items:center;}
.rank-meta span{display:inline-flex;align-items:center;gap:6px;}
.rank-meta i{font-size:12px;color:#5F82B8;}

/* ============ 9. 分页 ============ */
.pager{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:40px;}
.pager-btn{
  min-width:42px;height:42px;padding:0 14px;
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  border:1px solid var(--line-2);
  border-radius:var(--r-md);
  background:#fff;
  color:var(--text);
  font-size:14px;font-weight:600;
  transition:all .2s ease;
}
.pager-btn:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);}
.pager-btn.is-current{background:var(--brand);border-color:var(--brand);color:#fff;}
.pager-btn.is-current:hover{color:#fff;}
.pager-wide{padding:0 18px;}

/* ============ 10. 订阅区 ============ */
.subscribe{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  box-shadow:var(--sh-1);
  padding:34px 36px;
  display:flex;flex-wrap:wrap;align-items:center;gap:24px;
}
.subscribe-copy{flex:1 1 340px;}
.subscribe-copy h3{font-size:22px;margin-bottom:8px;}
.subscribe-copy p{font-size:14px;color:var(--muted);margin:0;}
.subscribe-form{flex:1 1 420px;display:flex;gap:12px;flex-wrap:wrap;}
.subscribe-form input{
  flex:1 1 240px;height:48px;padding:0 16px;
  border:1px solid var(--line-2);border-radius:var(--r-md);
  background:#FBFCFE;outline:none;
  font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.subscribe-form input:focus{border-color:var(--brand);box-shadow:0 0 0 2px rgba(27,87,200,.16);background:#fff;}
.subscribe-form .btn{flex:0 0 auto;height:48px;}
.subscribe-tip{flex:1 1 100%;font-size:12px;color:var(--muted);padding-left:2px;}

/* ============ 11. FAQ ============ */
.faq-wrap{display:flex;flex-wrap:wrap;gap:40px;}
.faq-side{flex:1 1 300px;max-width:360px;}
.faq-main{flex:1 1 520px;}
.accordion-item{
  border:1px solid var(--line);
  border-radius:14px;
  background:#fff;
  margin-bottom:14px;
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.accordion-item:hover{border-color:var(--line-2);}
.accordion-title{
  display:block;
  position:relative;
  padding:20px 60px 20px 22px;
  font-size:16px;
  font-weight:600;
  color:var(--title);
  line-height:1.55;
  transition:color .2s ease;
}
.accordion-title:hover{color:var(--brand);}
.accordion-title::before{display:none !important;}
.accordion-title::after{
  content:"+";
  position:absolute;right:20px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;
  transition:background .2s ease,color .2s ease;
}
.accordion-item.is-active{border-color:var(--brand-soft);box-shadow:var(--sh-2);}
.accordion-item.is-active .accordion-title{color:var(--brand);}
.accordion-item.is-active .accordion-title::after{content:"–";background:var(--brand);color:#fff;}
.accordion-content{
  padding:0 22px 22px;
  border:none;
  background:transparent;
  color:var(--text);
  font-size:15px;
  line-height:1.75;
}
.accordion-content p{margin:0;}

/* ============ 12. CTA 与表单 ============ */
.cta-band{background:var(--brand-ink);padding:72px 0;}
.cta-grid{display:flex;flex-wrap:wrap;gap:40px;align-items:center;}
.cta-copy{flex:1 1 360px;color:#CFDDF5;}
.cta-copy h2{color:#fff;font-size:32px;line-height:1.3;margin-bottom:14px;}
.cta-copy p{font-size:15px;color:#B9CBE9;margin-bottom:22px;}
.cta-points{display:flex;flex-direction:column;gap:12px;}
.cta-points span{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:#D7E3F7;}
.cta-points i{color:#7FB0FF;margin-top:5px;font-size:13px;}
.form-card{
  flex:1 1 420px;
  background:#fff;
  border-radius:var(--r-lg);
  box-shadow:var(--sh-3);
  padding:30px 32px;
}
.form-card h3{font-size:20px;margin-bottom:6px;}
.form-card .form-hint{font-size:13px;color:var(--muted);margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--title);margin-bottom:7px;}
.field label .req{color:var(--brand);margin-left:3px;}
.field input,.field select,.field textarea{
  width:100%;
  border:1px solid var(--line-2);
  border-radius:var(--r-md);
  background:#FBFCFE;
  padding:0 14px;
  height:44px;
  font-size:14px;
  outline:none;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field textarea{height:96px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);
  box-shadow:0 0 0 2px rgba(27,87,200,.16);
  background:#fff;
}
.form-card .btn{width:100%;height:48px;margin-top:6px;}
.form-note{font-size:12px;color:var(--muted);margin-top:12px;line-height:1.6;}

/* ============ 13. 页脚 ============ */
.site-footer{
  background:var(--deep);
  border-top:2px solid var(--brand);
  color:#C7D6EE;
  padding:64px 0 0;
  font-size:14px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand .brand-text strong{color:#fff;}
.footer-brand .brand-text em{color:#8FA6C9;}
.footer-desc{font-size:13px;line-height:1.8;color:#9FB4D6;max-width:26em;}
.footer-col h4{
  font-size:15px;color:#fff;margin-bottom:16px;font-weight:600;
  position:relative;padding-left:12px;
}
.footer-col h4::before{
  content:"";position:absolute;left:0;top:.42em;
  width:3px;height:14px;border-radius:2px;background:var(--brand);
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{color:#C7D6EE;font-size:14px;}
.footer-col ul a:hover{color:#fff;}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;color:#9FB4D6;font-size:13px;}
.footer-contact i{color:#5F82B8;margin-top:5px;font-size:12px;}
.footer-bottom{
  margin-top:48px;
  border-top:1px solid rgba(199,214,238,.16);
  padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#8FA6C9;
}
.footer-bottom a{color:#C7D6EE;}
.footer-bottom a:hover{color:#fff;}

/* ============ 14. 响应式断点 ============ */
@media (max-width:1279px){
  :root{--sec-y:72px;}
  .hero h1{font-size:38px;}
}
@media (max-width:1023px){
  :root{--sec-y:64px;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .main-nav{
    position:fixed;
    top:72px;left:0;right:0;bottom:0;
    background:#fff;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin-left:0;
    padding:20px 24px 40px;
    overflow-y:auto;
    transform:translateX(100%);
    transition:transform .28s ease;
    z-index:55;
  }
  .main-nav.is-open{transform:translateX(0);}
  .main-nav a{
    font-size:17px;
    padding:16px 2px;
    border-bottom:1px solid var(--line);
  }
  .main-nav a::after{display:none;}
  .main-nav a.active{color:var(--brand);}
  .mobile-search{
    display:flex;align-items:center;gap:10px;
    background:#F2F6FC;border-radius:var(--r-md);
    height:44px;padding:0 14px;margin-bottom:8px;
  }
  .mobile-search i{color:var(--muted);}
  .mobile-search input{flex:1;min-width:0;border:none;background:transparent;outline:none;font-size:14px;}
  .command-search,.nav-quick{display:none;}
  .hero{padding:26px 0 48px;}
  .hero-copy{flex:1 1 100%;max-width:none;}
  .hero-visual{flex:1 1 100%;margin-top:34px;}
  .hero-float{right:12px;bottom:-20px;}
  .hero h1{font-size:32px;}
  .sec-title{font-size:26px;}
  .cta-copy h2{font-size:26px;}
  .faq-side{max-width:none;}
}
@media (max-width:767px){
  :root{--sec-y:48px;}
  .grid-container{padding-left:16px;padding-right:16px;}
  .grid-x{margin-left:-10px;margin-right:-10px;}
  .grid-x>.cell{padding-left:10px;padding-right:10px;}
  .grid-margin-x{margin-left:-10px;margin-right:-10px;}
  .grid-margin-x>.cell{padding-left:10px;padding-right:10px;}
  .grid-margin-y{margin-top:-10px;}
  .grid-margin-y>.cell{margin-top:10px;}
  .hero h1{font-size:28px;}
  .hero-lead{font-size:15px;}
  .hero .btn{width:100%;}
  .hero-actions{gap:10px;}
  .hero-actions .link-arrow{width:100%;justify-content:center;}
  .trust-row{gap:12px;flex-direction:column;}
  .hero-float{right:8px;bottom:-16px;padding:10px 12px;max-width:260px;}
  .hero-float img{width:46px;height:46px;}
  .hero-float .num{font-size:18px;}
  .sec-title{font-size:22px;padding-left:12px;}
  .sec-title::before{height:16px;}
  .sec-sub{padding-left:12px;font-size:14px;}
  .card-title{font-size:16px;}
  .feature-card .card-title{font-size:19px;}
  .rank-item{gap:12px;padding:16px 2px;}
  .rank-meta{display:none;}
  .rank-main a{font-size:15px;}
  .wall-item{flex:0 0 82%;}
  .subscribe{padding:24px 20px;}
  .subscribe-form .btn{width:100%;}
  .pager-btn{min-width:40px;height:40px;font-size:13px;}
  .pager-wide{padding:0 12px;}
  .cta-band{padding:48px 0;}
  .form-card{padding:24px 20px;}
  .site-footer{padding-top:48px;}
  .accordion-title{font-size:15px;padding:16px 52px 16px 16px;}
  .accordion-content{padding:0 16px 18px;}
}
@media (max-width:520px){
  .brand-text strong{font-size:15px;}
  .brand-text em{font-size:11px;}
  .hero-tabs{gap:8px;}
  .tab-chip{font-size:12px;padding:6px 12px;}
  .card-body{padding:16px;}
  .hero-float{position:static;margin-top:14px;max-width:none;}
}

/* roulang page: category4 */
/* ============ 1. 设计变量 ============ */
:root{
  --brand:#1B57C8;
  --brand-dark:#1546A6;
  --brand-ink:#0F3676;
  --brand-soft:#EDF3FE;
  --accent:#FF6A2B;
  --up:#1FA971;
  --down:#E5484D;

  --page-bg:#F5F8FD;
  --card:#FFFFFF;
  --section-alt:#EEF3FB;
  --line:#E3EAF5;
  --line-2:#DCE5F2;

  --t-title:#0F1D33;
  --t-body:#44546B;
  --t-mute:#7A8AA3;
  --t-disabled:#A9B6C9;

  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --r-pill:999px;

  --sh-1:0 2px 6px rgba(15,29,51,.04);
  --sh-2:0 12px 28px rgba(15,29,51,.10);
  --sh-3:0 18px 40px rgba(15,29,51,.12);

  --sp-section:88px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}

/* ============ 2. Reset 与基础排版 ============ */
*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--t-body);
  background:var(--page-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{ margin:0; color:var(--t-title); font-weight:600; line-height:1.3; }
p{ margin:0; }
ul,ol{ margin:0; padding:0; list-style:none; }
img{ max-width:100%; display:block; border-radius:var(--r-md); }
a{ color:var(--brand); text-decoration:none; transition:color .2s ease,opacity .2s ease; }
a:hover{ color:var(--brand-dark); }
button,input,select,textarea{ font-family:inherit; font-size:inherit; color:inherit; }
:focus{ outline:none; }
:focus-visible{ outline:2px solid var(--brand); outline-offset:2px; border-radius:4px; }
::selection{ background:var(--brand-soft); color:var(--brand-ink); }

/* Foundation 默认样式覆盖 */
body, .grid-container, .accordion, .menu{ font-family:var(--font) !important; }
a{ color:var(--brand); }
a:hover,a:focus{ color:var(--brand-dark); }
button, .button{ font-family:var(--font); border-radius:var(--r-sm); }
.callout{ background:var(--brand-soft); border:1px solid var(--line-2); border-radius:var(--r-md); color:var(--t-body); }
table{ border-collapse:collapse; }

/* ============ 3. 容器与栅格 ============ */
.grid-container{
  max-width:1200px;
  padding-left:24px;
  padding-right:24px;
  margin-left:auto;
  margin-right:auto;
}
.grid-container.full{ max-width:none; padding-left:0; padding-right:0; }
@media screen and (min-width:1440px){
  .grid-container{ max-width:1280px; }
}

/* ============ 4. 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  white-space:nowrap;
  cursor:pointer;
  transition:background .22s ease,color .22s ease,box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.btn-primary{ background:var(--brand); color:#fff; }
.btn-primary:hover{ background:var(--brand-dark); color:#fff; transform:translateY(-1px); box-shadow:0 8px 18px rgba(27,87,200,.28); }
.btn-primary:active{ transform:translateY(0); box-shadow:0 2px 6px rgba(27,87,200,.20); }
.btn-ghost{ background:#fff; color:var(--brand); border-color:var(--line-2); }
.btn-ghost:hover{ background:var(--brand-soft); color:var(--brand); border-color:#C6D8F6; }
.btn-light{ background:rgba(255,255,255,.14); color:#fff; border-color:rgba(255,255,255,.34); }
.btn-light:hover{ background:#fff; color:var(--brand-ink); }
.btn-sm{ height:38px; padding:0 18px; font-size:14px; }
.btn-lg{ height:48px; padding:0 28px; font-size:16px; }
.btn-block{ width:100%; }
.btn-link{
  display:inline-flex; align-items:center; gap:6px;
  font-size:15px; font-weight:600; color:var(--brand); height:auto; padding:0; background:none; border:0;
}
.btn-link i{ transition:transform .22s ease; font-size:12px; }
.btn-link:hover{ color:var(--brand-dark); }
.btn-link:hover i{ transform:translateX(2px); }

/* ============ 5. 徽章 / 标签 ============ */
.badge{
  display:inline-flex; align-items:center; gap:6px;
  padding:4px 12px;
  border-radius:var(--r-pill);
  background:var(--brand-soft);
  color:var(--brand);
  font-size:12.5px;
  font-weight:600;
  line-height:1.6;
}
.badge-hot{ background:#FFF1E9; color:var(--accent); }
.badge-line{ background:#fff; border:1px solid var(--line-2); color:var(--t-mute); font-weight:500; }
.tag{
  display:inline-block;
  padding:3px 10px;
  border-radius:var(--r-pill);
  background:var(--section-alt);
  color:var(--t-body);
  font-size:12.5px;
}

/* ============ 6. 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{ box-shadow:0 8px 24px rgba(15,29,51,.06); }
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:68px;
}
.brand{ display:inline-flex; align-items:center; gap:10px; text-decoration:none; }
.brand-mark{
  display:inline-flex; align-items:center; justify-content:center;
  width:36px; height:36px;
  border-radius:10px;
  background:var(--brand);
  color:#fff;
  font-size:14px;
  font-weight:700;
  letter-spacing:.5px;
  flex:0 0 auto;
}
.brand-text{ display:inline-flex; flex-direction:column; line-height:1.15; }
.brand-text strong{ font-size:16px; font-weight:700; color:var(--t-title); letter-spacing:.2px; }
.brand-text em{ font-style:normal; font-size:12px; color:var(--t-mute); letter-spacing:1.5px; }

.main-nav{ display:flex; align-items:center; gap:28px; }
.main-nav > a{
  position:relative;
  padding:6px 0;
  font-size:15px;
  font-weight:500;
  color:var(--t-body);
}
.main-nav > a::after{
  content:'';
  position:absolute;
  left:0; right:0; bottom:-2px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .25s ease;
}
.main-nav > a:hover{ color:var(--brand); }
.main-nav > a:hover::after,
.main-nav > a.active::after{ transform:scaleX(1); }
.main-nav > a.active{ color:var(--brand); font-weight:600; }
.mobile-search{ display:none; }

.nav-tools{ display:flex; align-items:center; gap:14px; }
.command-search{
  display:flex;
  align-items:center;
  gap:8px;
  width:248px;
  height:36px;
  padding:0 10px 0 12px;
  border-radius:var(--r-sm);
  background:#F2F6FC;
  border:1px solid transparent;
  transition:border-color .2s ease,background .2s ease;
}
.command-search:focus-within{ background:#fff; border-color:var(--brand); }
.command-search i{ font-size:13px; color:var(--t-mute); }
.command-search input{
  flex:1 1 auto;
  min-width:0;
  height:100%;
  border:0;
  background:transparent;
  font-size:14px;
  color:var(--t-title);
  outline:none;
}
.command-search input::placeholder{ color:var(--t-disabled); }
.command-search kbd{
  flex:0 0 auto;
  padding:1px 7px;
  border-radius:6px;
  background:#fff;
  border:1px solid var(--line-2);
  color:var(--t-mute);
  font-size:11px;
  font-family:var(--font);
}
.nav-quick{ font-size:14px; font-weight:500; color:var(--t-body); }
.nav-quick:hover{ color:var(--brand); }
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px; height:44px;
  border-radius:var(--r-sm);
  border:1px solid var(--line-2);
  background:#fff;
  color:var(--t-title);
  cursor:pointer;
}
.nav-toggle:hover{ background:var(--brand-soft); color:var(--brand); }

/* ============ 7. 页面 Hero ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  background:linear-gradient(180deg,#F7FAFF 0%,#FFFFFF 100%);
  border-bottom:1px solid var(--line);
  padding:44px 0 52px;
}
.page-hero::after{
  content:'';
  position:absolute;
  right:0; top:0; bottom:0;
  width:40%;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity:.55;
  pointer-events:none;
}
.page-hero::before{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(255,255,255,.98) 0%,rgba(255,255,255,.90) 48%,rgba(255,255,255,.35) 100%);
  pointer-events:none;
  z-index:0;
}
.page-hero .grid-container{ position:relative; z-index:1; }
.crumb{
  display:flex; flex-wrap:wrap; align-items:center; gap:8px;
  font-size:14px; color:var(--t-mute); margin-bottom:20px;
}
.crumb a{ color:var(--t-mute); }
.crumb a:hover{ color:var(--brand); }
.crumb .sep{ color:var(--t-disabled); }
.crumb .current{ color:var(--brand); font-weight:600; }

.hero-inner{ max-width:760px; }
.page-hero h1{
  font-size:40px;
  line-height:1.28;
  font-weight:700;
  letter-spacing:.3px;
  margin:16px 0 18px;
}
.hero-lead{
  font-size:16.5px;
  line-height:1.8;
  color:var(--t-body);
  max-width:640px;
}
.hero-tabs{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:28px;
}
.hero-tabs a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:40px;
  padding:0 16px;
  border-radius:var(--r-pill);
  background:#fff;
  border:1px solid var(--line-2);
  color:var(--t-body);
  font-size:14px;
  font-weight:500;
  transition:all .22s ease;
}
.hero-tabs a i{ color:var(--brand); font-size:13px; }
.hero-tabs a:hover{ background:var(--brand-soft); border-color:#C6D8F6; color:var(--brand); transform:translateY(-1px); }

/* ============ 8. 板块通用 ============ */
.section{ padding:var(--sp-section) 0; }
.section-alt{ background:var(--section-alt); }
.section-head{ margin-bottom:32px; }
.section-head h2{
  position:relative;
  font-size:32px;
  font-weight:600;
  padding-left:16px;
  margin-bottom:12px;
}
.section-head h2::before{
  content:'';
  position:absolute;
  left:0; top:50%;
  transform:translateY(-50%);
  width:4px; height:20px;
  border-radius:2px;
  background:var(--brand);
}
.section-head p{ font-size:15px; color:var(--t-mute); max-width:720px; }
.section-head.split{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
}

/* ============ 9. 响应时效卡 ============ */
.stat-row{ display:grid; grid-template-columns:repeat(4,1fr); gap:24px; }
.stat-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:24px 22px 20px;
  box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease;
}
.stat-card:hover{ transform:translateY(-2px); box-shadow:var(--sh-2); }
.stat-card .stat-icon{
  width:40px; height:40px;
  display:inline-flex; align-items:center; justify-content:center;
  border-radius:10px;
  background:var(--brand-soft);
  color:var(--brand);
  font-size:16px;
  margin-bottom:16px;
}
.stat-num{
  font-size:30px;
  font-weight:700;
  color:var(--brand-ink);
  line-height:1.1;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.5px;
}
.stat-num small{ font-size:14px; font-weight:600; color:var(--t-mute); margin-left:4px; letter-spacing:0; }
.stat-name{ font-size:14.5px; font-weight:600; color:var(--t-title); margin-top:8px; }
.stat-desc{ font-size:13px; color:var(--t-mute); margin-top:6px; line-height:1.6; }
.stat-card .rule{ height:1px; background:var(--line); margin-top:16px; }

/* ============ 10. FAQ 手风琴 ============ */
.faq-layout{ display:grid; grid-template-columns:1fr; gap:0; }
.faq-group + .faq-group{ margin-top:56px; }
.faq-group-head{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:20px;
}
.faq-group-head h2{
  position:relative;
  font-size:26px;
  padding-left:16px;
}
.faq-group-head h2::before{
  content:'';
  position:absolute;
  left:0; top:50%; transform:translateY(-50%);
  width:4px; height:20px; border-radius:2px; background:var(--brand);
}
.faq-group-head .count{
  display:inline-flex; align-items:center; justify-content:center;
  min-width:26px; height:26px; padding:0 8px;
  border-radius:var(--r-pill);
  background:var(--brand-soft);
  color:var(--brand);
  font-size:13px; font-weight:600;
}

ul.accordion{
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:#fff;
  box-shadow:var(--sh-1);
  overflow:hidden;
}
ul.accordion li.accordion-item{ border-bottom:1px solid var(--line); }
ul.accordion li.accordion-item:last-child{ border-bottom:0; }
ul.accordion .accordion-title{
  position:relative;
  padding:20px 68px 20px 24px;
  border:0;
  background:#fff;
  color:var(--t-title);
  font-size:16.5px;
  font-weight:600;
  line-height:1.5;
  transition:background .2s ease,color .2s ease;
}
ul.accordion .accordion-title:hover{ background:#FAFCFF; color:var(--brand); }
ul.accordion .accordion-title::before{
  content:'+';
  position:absolute;
  right:24px; top:50%;
  width:28px; height:28px;
  transform:translateY(-50%);
  margin:0;
  border-radius:50%;
  border:1px solid var(--line-2);
  background:#fff;
  color:var(--brand);
  font-size:17px;
  font-weight:500;
  line-height:1;
  display:flex;
  align-items:center;
  justify-content:center;
  transition:all .22s ease;
}
ul.accordion .accordion-item.is-active > .accordion-title{ color:var(--brand); background:#FAFCFF; }
ul.accordion .accordion-item.is-active > .accordion-title::before{
  content:'–';
  background:var(--brand);
  border-color:var(--brand);
  color:#fff;
}
ul.accordion .accordion-content{
  display:none;
  padding:0 68px 22px 24px;
  border:0;
  background:#fff;
  color:var(--t-body);
  font-size:15px;
  line-height:1.8;
}
ul.accordion .accordion-item.is-active > .accordion-content{ display:block; }
ul.accordion .accordion-content p + p{ margin-top:10px; }

/* ============ 11. 文档指引列表 ============ */
.doc-list{
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:#fff;
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.doc-item{
  display:flex;
  align-items:center;
  gap:20px;
  padding:20px 24px;
  border-bottom:1px solid var(--line);
  transition:background .22s ease;
}
.doc-item:last-child{ border-bottom:0; }
.doc-item:hover{ background:#FAFCFF; }
.doc-icon{
  flex:0 0 auto;
  width:44px; height:44px;
  display:inline-flex; align-items:center; justify-content:center;
  border-radius:var(--r-sm);
  background:var(--brand-soft);
  color:var(--brand);
  font-size:17px;
}
.doc-main{ flex:1 1 auto; min-width:0; }
.doc-main h3{ font-size:16px; font-weight:600; margin-bottom:4px; }
.doc-main p{ font-size:13.5px; color:var(--t-mute); line-height:1.6; }
.doc-meta{ display:flex; align-items:center; gap:10px; flex:0 0 auto; }
.doc-dl{
  display:inline-flex; align-items:center; justify-content:center;
  width:44px; height:44px;
  border-radius:var(--r-sm);
  border:1px solid var(--line-2);
  color:var(--brand);
  background:#fff;
  transition:all .22s ease;
}
.doc-dl:hover{ background:var(--brand); border-color:var(--brand); color:#fff; transform:translateY(-1px); }

/* ============ 12. 联系卡 ============ */
.contact-wrap{ display:grid; grid-template-columns:1.05fr .95fr; gap:32px; align-items:stretch; }
.contact-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:32px;
  display:flex;
  flex-direction:column;
}
.contact-card h3{ font-size:20px; margin-bottom:8px; }
.contact-card > p{ font-size:14.5px; color:var(--t-mute); }
.contact-list{ margin-top:24px; display:flex; flex-direction:column; gap:0; }
.contact-list li{
  display:flex;
  align-items:flex-start;
  gap:14px;
  padding:16px 0;
  border-top:1px solid var(--line);
}
.contact-list li:last-child{ border-bottom:1px solid var(--line); }
.contact-list .ci{
  flex:0 0 auto;
  width:38px; height:38px;
  display:inline-flex; align-items:center; justify-content:center;
  border-radius:10px;
  background:var(--brand-soft);
  color:var(--brand);
  font-size:15px;
}
.contact-list .ct{ font-size:15px; font-weight:600; color:var(--t-title); }
.contact-list .cd{ font-size:13.5px; color:var(--t-mute); margin-top:2px; line-height:1.6; }
.contact-card .btn{ margin-top:26px; align-self:flex-start; }

.contact-visual{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  min-height:280px;
}
.contact-visual img{ width:100%; height:100%; object-fit:cover; border-radius:0; }
.contact-visual .float-card{
  position:absolute;
  left:24px; bottom:24px;
  right:24px;
  background:#fff;
  border-radius:var(--r-md);
  box-shadow:var(--sh-3);
  padding:18px 20px;
}
.contact-visual .float-card strong{
  display:block;
  font-size:24px;
  font-weight:700;
  color:var(--brand-ink);
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.contact-visual .float-card span{ font-size:13px; color:var(--t-mute); }

/* ============ 13. 表单 ============ */
.form-band{ background:var(--brand-ink); color:#fff; }
.form-band h2{ color:#fff; font-size:30px; margin-bottom:14px; }
.form-band .lead{ color:#C7D6EE; font-size:15.5px; max-width:420px; }
.form-points{ margin-top:28px; display:flex; flex-direction:column; gap:14px; }
.form-points li{
  display:flex; align-items:flex-start; gap:10px;
  font-size:14.5px; color:#DCE7F8; line-height:1.6;
}
.form-points li i{ color:#7FB0FF; margin-top:5px; font-size:13px; }
.form-grid{ display:grid; grid-template-columns:1fr 1fr; gap:32px; align-items:start; }

.form-card{
  background:#fff;
  border-radius:var(--r-lg);
  box-shadow:var(--sh-3);
  padding:30px;
  color:var(--t-body);
}
.form-card h3{ font-size:18px; margin-bottom:18px; }
.field{ margin-bottom:16px; }
.field label{
  display:block;
  font-size:14px;
  font-weight:600;
  color:var(--t-title);
  margin-bottom:8px;
}
.field label .req{ color:var(--brand); margin-left:3px; }
.field input[type="text"],
.field input[type="tel"],
.field input[type="email"],
.field select,
.field textarea{
  width:100%;
  height:44px;
  padding:0 14px;
  border:1px solid var(--line-2);
  border-radius:var(--r-sm);
  background:#fff;
  color:var(--t-title);
  font-size:14.5px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{ height:112px; padding:12px 14px; line-height:1.7; resize:vertical; }
.field select{ appearance:none; background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path d='M1 1l5 5 5-5' fill='none' stroke='%237A8AA3' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/></svg>"); background-repeat:no-repeat; background-position:right 14px center; padding-right:36px; }
.field input:focus,
.field select:focus,
.field textarea:focus{ border-color:var(--brand); box-shadow:0 0 0 2px rgba(27,87,200,.18); }
.field-hint{ font-size:12.5px; color:var(--t-mute); margin-top:6px; }
.form-card .btn-block{ margin-top:6px; }
.form-note{ font-size:12.5px; color:var(--t-mute); margin-top:12px; line-height:1.6; }

/* ============ 14. 底部 CTA 条 ============ */
.cta-strip{
  background:#fff;
  border:1px solid var(--line);
  border-left:4px solid var(--brand);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:28px 32px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.cta-strip h3{ font-size:20px; margin-bottom:6px; }
.cta-strip p{ font-size:14.5px; color:var(--t-mute); }

/* ============ 15. 页脚 ============ */
.site-footer{
  background:#0B2043;
  border-top:2px solid var(--brand);
  color:#C7D6EE;
  padding:64px 0 0;
  font-size:14px;
}
.footer-brand{ display:inline-flex; align-items:center; gap:10px; margin-bottom:16px; }
.site-footer .brand-text strong{ color:#fff; }
.site-footer .brand-text em{ color:#8FA9D6; }
.footer-desc{ font-size:14px; line-height:1.8; color:#93A9CC; max-width:300px; }
.footer-col h4{ color:#fff; font-size:15px; font-weight:600; margin-bottom:16px; }
.footer-col ul li{ margin-bottom:10px; }
.footer-col ul li a{ color:#C7D6EE; font-size:14px; }
.footer-col ul li a:hover{ color:#fff; }
.footer-contact li{ display:flex; align-items:flex-start; gap:10px; color:#93A9CC; }
.footer-contact li i{ color:#5E80BE; margin-top:5px; font-size:13px; }
.footer-bottom{
  margin-top:48px;
  border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0 28px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:#8FA9D6;
}
.footer-bottom a{ color:#C7D6EE; }
.footer-bottom a:hover{ color:#fff; }

/* ============ 16. 响应式 ============ */
@media screen and (max-width:1199px){
  .stat-row{ grid-template-columns:repeat(2,1fr); }
  .command-search{ width:200px; }
}

@media screen and (max-width:1023px){
  :root{ --sp-section:72px; }
  .page-hero::after{ width:100%; opacity:.16; }
  .page-hero h1{ font-size:32px; }
  .nav-toggle{ display:inline-flex; }
  .command-search{ display:none; }
  .nav-quick{ display:none; }
  .main-nav{
    position:fixed;
    top:68px; left:0; right:0; bottom:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:20px 24px 40px;
    background:#fff;
    overflow-y:auto;
    box-shadow:0 18px 40px rgba(15,29,51,.12);
  }
  .main-nav.open{ display:flex; }
  .main-nav > a{
    padding:16px 0;
    font-size:16px;
    border-bottom:1px solid var(--line);
  }
  .main-nav > a::after{ display:none; }
  .main-nav > a.active{ color:var(--brand); }
  .mobile-search{
    display:flex;
    align-items:center;
    gap:10px;
    height:44px;
    padding:0 14px;
    margin-bottom:14px;
    border-radius:var(--r-sm);
    background:#F2F6FC;
  }
  .mobile-search i{ color:var(--t-mute); font-size:14px; }
  .mobile-search input{ flex:1 1 auto; min-width:0; border:0; background:transparent; height:100%; font-size:15px; outline:none; }
  .contact-wrap{ grid-template-columns:1fr; }
  .form-grid{ grid-template-columns:1fr; }
  .cta-strip{ flex-direction:column; align-items:flex-start; }
  .section-head.split{ flex-direction:column; align-items:flex-start; gap:12px; }
}

@media screen and (max-width:768px){
  :root{ --sp-section:64px; }
  .grid-container{ padding-left:20px; padding-right:20px; }
  .section-head h2{ font-size:24px; }
  .faq-group-head h2{ font-size:22px; }
  .page-hero{ padding:32px 0 40px; }
  .page-hero h1{ font-size:28px; }
  .hero-lead{ font-size:15.5px; }
  .stat-row{ grid-template-columns:repeat(2,1fr); gap:16px; }
  .doc-item{ flex-wrap:wrap; gap:14px; }
  .doc-meta{ width:100%; justify-content:space-between; }
  ul.accordion .accordion-title{ font-size:15.5px; padding:18px 62px 18px 20px; }
  ul.accordion .accordion-content{ padding:0 62px 20px 20px; }
  ul.accordion .accordion-title::before{ right:20px; }
  .form-band h2{ font-size:24px; }
  .form-card{ padding:24px 20px; }
  .contact-card{ padding:24px 20px; }
  .cta-strip{ padding:24px 20px; }
}

@media screen and (max-width:520px){
  :root{ --sp-section:48px; }
  .brand-text strong{ font-size:15px; }
  .nav-wrap{ height:64px; }
  .main-nav{ top:64px; }
  .page-hero h1{ font-size:24px; line-height:1.35; }
  .stat-row{ grid-template-columns:1fr; }
  .stat-num{ font-size:26px; }
  .hero-tabs a{ height:38px; padding:0 14px; font-size:13.5px; }
  .doc-item{ padding:16px 18px; }
  .doc-icon{ width:40px; height:40px; }
  .footer-bottom{ flex-direction:column; align-items:flex-start; }
  .btn{ width:100%; }
  .hero-tabs .btn{ width:auto; }
  .contact-card .btn{ align-self:stretch; }
  .contact-visual .float-card{ left:16px; right:16px; bottom:16px; padding:14px 16px; }
  .contact-visual .float-card strong{ font-size:20px; }
}