/* roulang page: index */
:root{
  --c-primary:#1F6FB2;
  --c-primary-dark:#155A94;
  --c-primary-light:#E8F2FA;
  --c-accent:#2FA39A;
  --c-warm:#E9A23B;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F6F9FC;
  --c-border:#E3EAF2;
  --c-text:#10202F;
  --c-text-2:#55677A;
  --c-text-3:#8C9AA8;
  --r-card:16px;
  --r-btn:10px;
  --r-input:12px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(16,42,72,.06);
  --sh-md:0 8px 24px -10px rgba(16,42,72,.14);
  --sh-lg:0 18px 40px -14px rgba(16,42,72,.20);
  --container:1200px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary-dark);}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
h1{font-size:clamp(30px,4.2vw,46px);font-weight:700;line-height:1.25;}
h2{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.3;}
h3{font-size:20px;font-weight:600;line-height:1.45;}
h4{font-size:17px;font-weight:600;}
p{color:var(--c-text-2);}
ul{list-style:none;padding:0;}
:focus-visible{outline:3px solid rgba(31,111,178,.4);outline-offset:2px;border-radius:6px;}

.grid-container{max-width:var(--container);padding-left:24px;padding-right:24px;}
.grid-x>.cell{padding-left:14px;padding-right:14px;}
.grid-margin-x{margin-left:-14px;margin-right:-14px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-border);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-md);}
.header-top{height:76px;display:flex;align-items:center;transition:height .25s ease;}
.site-header.is-scrolled .header-top{height:64px;}
.header-inner{display:flex;align-items:center;gap:20px;width:100%;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-accent));
  display:flex;align-items:center;justify-content:center;color:#fff;
  box-shadow:var(--sh-sm);
}
.brand-mark svg{width:22px;height:22px;}
.brand-name{font-size:17px;font-weight:700;color:var(--c-text);letter-spacing:0;white-space:nowrap;}
.brand:hover .brand-name{color:var(--c-primary);}
.nav-search{
  position:relative;flex:1 1 auto;
  width:clamp(320px,40vw,560px);max-width:560px;margin:0 auto;
  display:flex;align-items:center;
}
.nav-search svg.search-icon{
  position:absolute;left:20px;width:18px;height:18px;color:var(--c-text-3);pointer-events:none;
}
.nav-search input[type="search"]{
  width:100%;height:46px;border-radius:var(--r-pill);
  border:1px solid #D9E3EE;background:#fff;
  padding:0 108px 0 48px;font-size:15px;color:var(--c-text);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search input[type="search"]::placeholder{color:var(--c-text-3);}
.nav-search input[type="search"]:focus{
  outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(31,111,178,.15);
}
.nav-search button{
  position:absolute;right:5px;top:5px;height:36px;padding:0 20px;
  border:none;border-radius:var(--r-pill);background:var(--c-primary);color:#fff;
  font-size:14px;cursor:pointer;transition:background .2s ease,transform .2s ease;
}
.nav-search button:hover{background:var(--c-primary-dark);}
.quick-links{display:flex;align-items:center;gap:4px;flex:0 0 auto;}
.quick-links a{
  font-size:14px;color:var(--c-text-2);padding:8px 12px;border-radius:8px;
  transition:background .2s ease,color .2s ease;
}
.quick-links a:hover{background:var(--c-primary-light);color:var(--c-primary);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-border);border-radius:12px;
  background:#fff;align-items:center;justify-content:center;cursor:pointer;flex:0 0 auto;
}
.nav-toggle svg{width:20px;height:20px;color:var(--c-text);}
.header-bottom{border-top:1px solid var(--c-border);background:#fff;height:44px;transition:height .25s ease;}
.site-header.is-scrolled .header-bottom{height:0;overflow:hidden;border-top-color:transparent;}
.cat-nav{display:flex;align-items:center;gap:6px;height:44px;}
.cat-nav a{
  position:relative;font-size:14.5px;color:var(--c-text-2);
  padding:0 14px;height:44px;line-height:44px;transition:color .2s ease;
}
.cat-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:center;transition:transform .2s ease;
}
.cat-nav a:hover{color:var(--c-primary);}
.cat-nav a:hover::after,.cat-nav a.is-active::after{transform:scaleX(1);}
.cat-nav a.is-active{color:var(--c-primary);font-weight:600;}

/* ---------- 移动端抽屉 ---------- */
.mobile-drawer{
  position:fixed;left:0;right:0;top:76px;bottom:0;background:#fff;z-index:75;
  padding:20px 24px 40px;overflow-y:auto;
  transform:translateX(102%);transition:transform .3s ease;
}
.mobile-drawer.is-open{transform:translateX(0);}
.mobile-drawer .drawer-search{position:relative;margin-bottom:20px;}
.mobile-drawer .drawer-search input{
  width:100%;height:46px;border-radius:var(--r-pill);border:1px solid #D9E3EE;
  padding:0 96px 0 20px;font-size:15px;
}
.mobile-drawer .drawer-search button{
  position:absolute;right:5px;top:5px;height:36px;padding:0 18px;border:none;border-radius:var(--r-pill);
  background:var(--c-primary);color:#fff;font-size:14px;
}
.drawer-title{font-size:13px;color:var(--c-text-3);margin-bottom:10px;}
.drawer-links{display:flex;flex-direction:column;gap:4px;margin-bottom:22px;}
.drawer-links a{
  display:block;padding:12px 14px;border-radius:10px;color:var(--c-text);
  font-size:15.5px;border:1px solid transparent;
}
.drawer-links a:hover,.drawer-links a.is-active{background:var(--c-primary-light);color:var(--c-primary);border-color:#D6E7F5;}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 26px;border-radius:var(--r-btn);font-size:15.5px;font-weight:600;
  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 svg{width:16px;height:16px;transition:transform .2s ease;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-sm);}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-md);}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-light);color:var(--c-primary-dark);transform:translateY(-2px);}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-primary);}
.btn-text:hover svg{transform:translateX(3px);}
.btn-text svg{width:15px;height:15px;}
.badge{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-primary-light);color:var(--c-primary);font-size:13.5px;font-weight:600;
}
.badge-warm{background:rgba(233,162,59,.14);color:#A8701A;}
.section{padding:88px 0;}
.section-alt{background:var(--c-bg-alt);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13.5px;font-weight:600;
  color:var(--c-accent);margin-bottom:14px;
}
.section-head .eyebrow::before{content:"";width:22px;height:2px;background:var(--c-accent);border-radius:2px;}
.section-head p{margin-top:14px;font-size:16.5px;}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}

.card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  height:100%;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:rgba(31,111,178,.3);}
.card-title{font-size:19px;font-weight:600;margin-bottom:10px;color:var(--c-text);}
.card-text{font-size:15px;color:var(--c-text-2);}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#F4F9FD 0%,#FFFFFF 78%);
  padding:64px 0 72px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(#1F6FB2 1px,transparent 1px);
  background-size:26px 26px;opacity:.05;pointer-events:none;
}
.hero-grid{position:relative;}
.hero-copy{padding-top:8px;}
.hero-copy h1{margin:16px 0 18px;}
.hero-sub{font-size:17px;line-height:1.85;color:var(--c-text-2);max-width:560px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px;}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:20px;
  box-shadow:var(--sh-lg);background:var(--c-primary-light);
}
.hero-metrics{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;
  margin-top:44px;padding-top:26px;border-top:1px solid var(--c-border);
}
.metric-num{
  font-size:clamp(28px,3.4vw,40px);font-weight:700;color:var(--c-primary);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.metric-label{font-size:13.5px;color:var(--c-text-3);}

/* ---------- Bento ---------- */
.bento-card{position:relative;overflow:hidden;display:flex;flex-direction:column;}
.bento-wide{min-height:290px;}
.bento-narrow{min-height:290px;}
.bento-index{
  font-size:14px;font-weight:700;color:var(--c-accent);
  font-variant-numeric:tabular-nums;letter-spacing:.06em;margin-bottom:14px;
}
.bento-img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px;margin-top:20px;background:var(--c-primary-light);
}
.bento-small{min-height:210px;}
.bento-list{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.bento-list li{font-size:15px;color:var(--c-text-2);display:flex;gap:10px;align-items:flex-start;}
.tick{flex:0 0 auto;width:20px;height:20px;border-radius:50%;background:var(--c-primary-light);display:flex;align-items:center;justify-content:center;margin-top:4px;}
.tick svg{width:12px;height:12px;color:var(--c-primary);}

/* ---------- 功能分组 ---------- */
.group-card{display:flex;flex-direction:column;}
.group-head{display:flex;align-items:center;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--c-border);}
.group-icon{
  width:42px;height:42px;border-radius:12px;background:var(--c-primary-light);
  display:flex;align-items:center;justify-content:center;color:var(--c-primary);flex:0 0 auto;
}
.group-icon svg{width:20px;height:20px;}
.group-list{margin-top:6px;}
.group-list li{
  display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--c-text-2);
  padding:13px 0;border-bottom:1px solid var(--c-border);
}
.group-list li:last-child{border-bottom:none;padding-bottom:0;}

/* ---------- 使用场景 ---------- */
.scene-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;margin-bottom:56px;}
.scene-row:last-child{margin-bottom:0;}
.scene-row.reverse .scene-media{order:2;}
.scene-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:16px;box-shadow:var(--sh-md);background:var(--c-primary-light);}
.scene-body h3{margin-bottom:12px;}
.scene-body p{font-size:15.5px;}
.scene-tags{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0 22px;}

/* ---------- 案例 ---------- */
.case-card{display:flex;flex-direction:column;gap:16px;}
.case-top{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.case-result{
  font-size:38px;font-weight:700;color:var(--c-primary);line-height:1.1;
  font-variant-numeric:tabular-nums;
}
.case-result small{font-size:15px;font-weight:600;color:var(--c-text-3);margin-left:6px;}
.case-quote{
  font-size:15px;color:var(--c-text-2);line-height:1.85;
  border-left:3px solid var(--c-primary-light);padding-left:16px;
}
.case-featured{border-color:rgba(31,111,178,.35);box-shadow:var(--sh-md);}

/* ---------- 价格 ---------- */
.price-card{position:relative;display:flex;flex-direction:column;}
.price-card .price-name{font-size:18px;font-weight:600;}
.price-amount{font-size:38px;font-weight:700;color:var(--c-text);font-variant-numeric:tabular-nums;line-height:1.2;margin-top:14px;}
.price-amount small{font-size:14px;font-weight:500;color:var(--c-text-3);margin-left:6px;}
.price-desc{font-size:14.5px;color:var(--c-text-3);margin-top:8px;}
.price-list{margin:22px 0 26px;display:flex;flex-direction:column;gap:12px;}
.price-list li{display:flex;gap:10px;font-size:15px;color:var(--c-text-2);align-items:flex-start;}
.price-card .btn{margin-top:auto;justify-content:center;}
.price-featured{border:1.5px solid var(--c-primary);box-shadow:var(--sh-lg);background:linear-gradient(180deg,#F7FBFE,#FFFFFF 42%);}
.price-badge{
  position:absolute;top:-14px;left:26px;background:var(--c-warm);color:#fff;
  font-size:13px;font-weight:600;padding:5px 14px;border-radius:var(--r-pill);box-shadow:var(--sh-sm);
}

/* ---------- 资讯列表 ---------- */
.news-card{
  display:flex;flex-direction:column;height:100%;background:#fff;
  border:1px solid var(--c-border);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-sm);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:rgba(31,111,178,.3);}
.news-thumb{position:relative;background:var(--c-primary-light);}
.news-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.news-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1 1 auto;}
.news-title{font-size:18px;font-weight:600;color:var(--c-text);margin:12px 0 10px;line-height:1.5;}
.news-summary{
  font-size:14.5px;color:var(--c-text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:18px;padding-top:14px;border-top:1px solid var(--c-border);
  font-size:13px;color:var(--c-text-3);
}
.empty-state{
  border:1px dashed var(--c-border);border-radius:var(--r-card);background:#fff;
  padding:56px 24px;text-align:center;color:var(--c-text-3);font-size:15px;
}
.empty-state svg{width:34px;height:34px;color:#B9CBDB;margin:0 auto 14px;}

/* ---------- FAQ ---------- */
.faq-wrap{border:1px solid var(--c-border);border-radius:var(--r-card);background:#fff;overflow:hidden;box-shadow:var(--sh-sm);}
.faq-item + .faq-item{border-top:1px solid var(--c-border);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 26px;background:transparent;border:none;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--c-text);cursor:pointer;transition:background .2s ease;
}
.faq-q:hover{background:var(--c-bg-alt);}
.faq-sign{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:var(--c-primary-light);
  display:flex;align-items:center;justify-content:center;color:var(--c-primary);
  font-size:18px;line-height:1;transition:transform .25s ease;
}
.faq-item.is-open .faq-sign{transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .3s ease;
  padding:0 26px;font-size:15.5px;color:var(--c-text-2);line-height:1.85;
}
.faq-item.is-open .faq-a{padding-bottom:20px;}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,#1B63A0 0%,#1F6FB2 46%,#2FA39A 100%);
  color:#fff;border-radius:24px;padding:56px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:var(--sh-lg);
}
.cta-band h2{color:#fff;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.86);font-size:16px;max-width:640px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.btn-light{background:#fff;color:var(--c-primary);}
.btn-light:hover{background:#EAF3FB;color:var(--c-primary-dark);transform:translateY(-2px);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.65);}
.btn-outline-light:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-2px);}

/* ---------- 页脚 ---------- */
.site-footer{background:#0F1F30;color:#E8EEF5;padding:64px 0 0;margin-top:88px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:linear-gradient(135deg,#2C82C9,#3FBFB4);}
.footer-brand span{font-size:16.5px;font-weight:700;color:#fff;}
.site-footer p{color:rgba(232,238,245,.72);font-size:14.5px;line-height:1.85;}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:rgba(232,238,245,.75);}
.footer-links a:hover{color:#7FC4E4;}
.footer-form{position:relative;margin-top:14px;}
.footer-form input{
  width:100%;height:46px;border-radius:var(--r-input);border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.06);color:#fff;padding:0 96px 0 16px;font-size:14.5px;
}
.footer-form input::placeholder{color:rgba(232,238,245,.5);}
.footer-form input:focus{outline:none;border-color:#7FC4E4;box-shadow:0 0 0 3px rgba(127,196,228,.18);}
.footer-form button{
  position:absolute;right:5px;top:5px;height:36px;padding:0 16px;border:none;border-radius:8px;
  background:var(--c-primary);color:#fff;font-size:14px;cursor:pointer;transition:background .2s ease;
}
.footer-form button:hover{background:#2C82C9;}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.1);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(232,238,245,.55);
}
.footer-bottom a{color:rgba(232,238,245,.7);}
.footer-bottom a:hover{color:#7FC4E4;}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  .nav-search{width:clamp(240px,34vw,420px);}
  .quick-links{display:none;}
  .section{padding:64px 0;}
  .scene-row{gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:44px 32px;}
}
@media screen and (max-width:767px){
  .header-top{height:64px;}
  .nav-search{display:none;}
  .nav-toggle{display:flex;}
  .header-bottom{display:none;}
  .brand-name{font-size:15.5px;}
  .hero{padding:36px 0 52px;}
  .hero-metrics{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 12px;}
  .section{padding:52px 0;}
  .scene-row{grid-template-columns:1fr;gap:22px;margin-bottom:44px;}
  .scene-row.reverse .scene-media{order:0;}
  .cta-band{border-radius:18px;padding:34px 24px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .site-footer{padding-top:48px;margin-top:60px;}
}
@media screen and (max-width:520px){
  .grid-container{padding-left:18px;padding-right:18px;}
  .grid-x>.cell{padding-left:10px;padding-right:10px;}
  .grid-margin-x{margin-left:-10px;margin-right:-10px;}
  .hero-actions .btn{width:100%;justify-content:center;}
  .card{padding:22px;}
  .faq-q{padding:14px 18px;font-size:15.5px;}
  .faq-a{padding:0 18px;}
}

/* roulang page: article */
:root{
  --c-primary:#1F6FB2;
  --c-primary-dark:#155A94;
  --c-primary-light:#E8F2FA;
  --c-accent:#2FA39A;
  --c-warm:#E9A23B;
  --c-ink:#10202F;
  --c-ink-2:#55677A;
  --c-ink-3:#8C9AA8;
  --c-line:#E3EAF2;
  --c-bg:#FFFFFF;
  --c-bg-soft:#F6F9FC;
  --c-footer:#0F1F30;
  --r-card:16px;
  --r-btn:10px;
  --r-input:12px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(16,42,72,.06);
  --sh-md:0 8px 24px -10px rgba(16,42,72,.14);
  --sh-lg:0 18px 40px -14px rgba(16,42,72,.20);
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",-apple-system,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
a:hover{color:var(--c-primary-dark);}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.3;color:var(--c-ink);letter-spacing:0;font-style:normal;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--c-primary);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;z-index:200;}
.skip-link:focus{left:0;color:#fff;}
.grid-container{max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease;
}
.site-header.is-compact{box-shadow:var(--sh-md);}
.header-inner{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:76px;
  transition:min-height .25s ease;
}
.site-header.is-compact .header-inner{min-height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--c-ink);font-weight:700;font-size:19px;white-space:nowrap;}
.brand:hover{color:var(--c-primary);}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:12px;background:var(--c-primary-light);color:var(--c-primary);}
.brand-mark svg{width:22px;height:22px;}
.nav-search{
  position:relative;
  display:flex;
  align-items:center;
  flex:1 1 auto;
  max-width:560px;
  height:46px;
  margin:0 auto;
  border:1px solid #D9E3EE;
  border-radius:var(--r-pill);
  background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(31,111,178,.15);}
.nav-search .search-icon{position:absolute;left:18px;display:inline-flex;color:var(--c-ink-3);pointer-events:none;}
.nav-search .search-icon svg{width:18px;height:18px;}
.nav-search input{
  flex:1 1 auto;
  height:100%;
  padding:0 12px 0 46px;
  border:0;
  background:transparent;
  border-radius:var(--r-pill);
  outline:none;
  font-size:15px;
}
.nav-search input::placeholder{color:var(--c-ink-3);}
.search-btn{
  flex:0 0 auto;
  margin:4px;
  height:38px;
  padding:0 22px;
  border-radius:var(--r-pill);
  background:var(--c-primary);
  color:#fff;
  font-size:14px;
  font-weight:600;
  transition:background-color .2s ease,transform .2s ease;
}
.search-btn:hover{background:var(--c-primary-dark);transform:translateY(-1px);}
.quick-links{display:flex;align-items:center;gap:2px;flex:0 0 auto;}
.quick-links a{padding:8px 12px;border-radius:8px;color:var(--c-ink-2);font-size:15px;white-space:nowrap;}
.quick-links a:hover{background:var(--c-primary-light);color:var(--c-primary);}
.quick-links a.is-active{background:var(--c-primary-light);color:var(--c-primary);font-weight:600;}
.nav-toggle{display:none;align-items:center;justify-content:center;width:42px;height:42px;border-radius:12px;border:1px solid var(--c-line);color:var(--c-ink);}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}
.nav-toggle svg{width:20px;height:20px;}
.cat-bar{display:flex;gap:26px;overflow-x:auto;border-top:1px solid var(--c-line);scrollbar-width:none;}
.cat-bar::-webkit-scrollbar{display:none;}
.cat-bar a{position:relative;display:inline-block;padding:12px 0;color:var(--c-ink-2);font-size:15px;white-space:nowrap;}
.cat-bar a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;}
.cat-bar a:hover{color:var(--c-primary);}
.cat-bar a:hover::after,.cat-bar a.is-active::after{transform:scaleX(1);}
.cat-bar a.is-active{color:var(--c-primary);font-weight:600;}

/* ===== 移动抽屉 ===== */
.mobile-drawer{display:none;}
.mobile-drawer.is-open{
  display:block;
  position:sticky;
  top:64px;
  z-index:75;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  box-shadow:var(--sh-md);
  padding:16px 20px 20px;
}
.drawer-search{position:relative;display:flex;align-items:center;height:46px;border:1px solid #D9E3EE;border-radius:var(--r-pill);margin-bottom:14px;}
.drawer-search input{flex:1 1 auto;height:100%;padding:0 16px;border:0;background:transparent;outline:none;font-size:15px;border-radius:var(--r-pill);}
.drawer-search button{flex:0 0 auto;margin:4px;height:38px;padding:0 20px;border-radius:var(--r-pill);background:var(--c-primary);color:#fff;font-size:14px;font-weight:600;}
.drawer-links{display:grid;gap:4px;}
.drawer-links a{padding:11px 12px;border-radius:10px;color:var(--c-ink-2);font-size:15px;}
.drawer-links a:hover,.drawer-links a.is-active{background:var(--c-primary-light);color:var(--c-primary);font-weight:600;}

/* ===== 通用按钮 / 徽章 ===== */
.btn-primary,.btn-ghost,.btn-link{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;transition:all .2s ease;}
.btn-primary{padding:13px 28px;border-radius:var(--r-btn);background:var(--c-primary);color:#fff;box-shadow:var(--sh-sm);}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-md);}
.btn-ghost{padding:12px 26px;border-radius:var(--r-btn);border:1px solid var(--c-primary);color:var(--c-primary);background:transparent;}
.btn-ghost:hover{background:var(--c-primary-light);color:var(--c-primary-dark);}
.btn-link{color:var(--c-primary);padding:4px 0;}
.btn-link svg{width:16px;height:16px;transition:transform .2s ease;}
.btn-link:hover svg{transform:translateX(3px);}
.badge{display:inline-flex;align-items:center;padding:4px 12px;border-radius:var(--r-pill);background:var(--c-primary-light);color:var(--c-primary);font-size:14px;font-weight:600;line-height:1.6;}
.badge-warm{background:rgba(233,162,59,.14);color:#A66C10;}

/* ===== 文章页头部 ===== */
.article-hero{
  padding:32px 0 40px;
  background:
    radial-gradient(circle at 1px 1px, rgba(31,111,178,.10) 1px, transparent 0) 0 0/22px 22px,
    linear-gradient(180deg,#F6F9FC 0%,#FFFFFF 100%);
  border-bottom:1px solid var(--c-line);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--c-ink-3);margin-bottom:22px;}
.breadcrumb a{color:var(--c-ink-3);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb span[aria-current]{color:var(--c-ink-2);}
.article-head{max-width:840px;}
.article-head h1{
  margin:16px 0 18px;
  font-size:clamp(26px,3.6vw,40px);
  font-weight:700;
  line-height:1.3;
}
.meta-row{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:14px;color:var(--c-ink-3);}
.meta-row .meta-item{display:inline-flex;align-items:center;gap:6px;}
.meta-row svg{width:15px;height:15px;color:var(--c-accent);}

/* ===== 正文 ===== */
.article-section{padding:52px 0 24px;background:#fff;}
.article-body{
  max-width:780px;
  margin:0 auto;
  font-size:16px;
  line-height:1.9;
  color:#22323F;
  overflow-x:auto;
}
.article-body p{margin:0 0 1.2em;}
.article-body h2{position:relative;margin:44px 0 16px;padding-left:14px;font-size:clamp(22px,2.4vw,28px);font-weight:700;}
.article-body h2::before{content:"";position:absolute;left:0;top:.3em;bottom:.3em;width:4px;border-radius:2px;background:var(--c-primary);}
.article-body h3{margin:28px 0 12px;font-size:20px;font-weight:600;}
.article-body h4{margin:22px 0 10px;font-size:17px;font-weight:600;}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:.5em;line-height:1.9;}
.article-body ul li::marker{color:var(--c-primary);}
.article-body ol li::marker{color:var(--c-primary);font-weight:600;}
.article-body blockquote{margin:24px 0;padding:20px 24px;border-left:4px solid var(--c-primary);background:var(--c-primary-light);border-radius:0 12px 12px 0;color:#1B3348;}
.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(--c-ink-3);text-align:center;margin-top:8px;}
.article-body table{width:100%;min-width:640px;border-collapse:collapse;margin:20px 0;font-size:15px;}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--c-line);text-align:left;vertical-align:top;}
.article-body th{background:var(--c-primary-light);color:var(--c-ink);font-weight:600;}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(31,111,178,.35);}
.article-body a:hover{color:var(--c-primary-dark);border-bottom-color:var(--c-primary-dark);}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:32px 0;}
.article-body code{padding:2px 7px;border-radius:6px;background:var(--c-bg-soft);border:1px solid var(--c-line);font-size:14px;}

.empty-state{
  max-width:780px;
  margin:0 auto;
  padding:52px 32px;
  text-align:center;
  background:var(--c-bg-soft);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
}
.empty-state svg{width:46px;height:46px;color:var(--c-primary);margin:0 auto 16px;}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{color:var(--c-ink-2);margin-bottom:22px;}

/* ===== 标签 / 上下篇 ===== */
.article-foot{padding:8px 0 56px;background:#fff;}
.foot-inner{max-width:780px;margin:0 auto;}
.tag-list{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:20px 0 22px;border-top:1px solid var(--c-line);}
.tag-label{font-size:14px;color:var(--c-ink-3);margin-right:4px;}
.tag{padding:5px 14px;border:1px solid var(--c-line);border-radius:var(--r-pill);font-size:14px;color:var(--c-ink-2);background:#fff;}
.tag:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-light);}
.post-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.post-nav-item{display:block;padding:18px 22px;border:1px solid var(--c-line);border-radius:var(--r-card);background:#fff;box-shadow:var(--sh-sm);transition:all .2s ease;}
.post-nav-item:hover{transform:translateY(-4px);border-color:rgba(31,111,178,.3);box-shadow:var(--sh-lg);}
.post-nav-dir{display:block;font-size:13px;color:var(--c-ink-3);margin-bottom:6px;}
.post-nav-title{display:block;font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.6;}
.post-nav-item:hover .post-nav-title{color:var(--c-primary);}

/* ===== 相关内容 ===== */
.related{padding:60px 0 72px;background:var(--c-bg-soft);border-top:1px solid var(--c-line);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:28px;}
.section-head h2{font-size:clamp(22px,2.6vw,30px);}
.section-head p{color:var(--c-ink-2);font-size:15px;margin-top:8px;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-sm);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
.post-card:hover{transform:translateY(-4px);border-color:rgba(31,111,178,.3);box-shadow:var(--sh-lg);}
.card-cover{position:relative;aspect-ratio:16/10;background:var(--c-primary-light);overflow:hidden;}
.card-cover img{width:100%;height:100%;object-fit:cover;}
.card-cover .badge{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.92);}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1 1 auto;}
.card-title{font-size:18px;font-weight:600;line-height:1.55;margin-bottom:10px;color:var(--c-ink);}
.post-card:hover .card-title{color:var(--c-primary);}
.card-desc{font-size:15px;color:var(--c-ink-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px;}
.card-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-ink-3);}

/* ===== CTA ===== */
.cta-band{
  position:relative;
  padding:72px 0;
  background:
    linear-gradient(120deg, rgba(21,90,148,.94), rgba(31,111,178,.9)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  color:#fff;
  overflow:hidden;
}
.cta-band::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 1px 1px, rgba(255,255,255,.16) 1px, transparent 0) 0 0/24px 24px;}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.4fr .9fr;gap:36px;align-items:center;}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,34px);margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.88);font-size:16px;line-height:1.85;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}
.cta-band .btn-primary{background:#fff;color:var(--c-primary-dark);}
.cta-band .btn-primary:hover{background:#F1F7FD;color:var(--c-primary-dark);}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.75);color:#fff;}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;}

/* ===== 页脚 ===== */
.site-footer{background:var(--c-footer);color:#E8EEF5;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:36px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(127,196,228,.16);color:#7FC4E4;}
.site-footer p{color:rgba(232,238,245,.78);font-size:14px;line-height:1.85;}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-links{display:grid;gap:10px;}
.footer-links a{color:rgba(232,238,245,.78);font-size:14px;}
.footer-links a:hover{color:#7FC4E4;}
.footer-form{display:flex;gap:8px;margin-top:14px;}
.footer-form input{flex:1 1 auto;height:44px;padding:0 14px;border-radius:var(--r-input);border:1px solid rgba(232,238,245,.22);background:rgba(255,255,255,.06);color:#fff;outline:none;font-size:14px;}
.footer-form input::placeholder{color:rgba(232,238,245,.55);}
.footer-form input:focus{border-color:#7FC4E4;box-shadow:0 0 0 3px rgba(127,196,228,.18);}
.footer-form button{flex:0 0 auto;padding:0 20px;height:44px;border-radius:var(--r-input);background:var(--c-primary);color:#fff;font-size:14px;font-weight:600;transition:background-color .2s ease;}
.footer-form button:hover{background:var(--c-primary-dark);}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;padding:20px 0 26px;border-top:1px solid rgba(232,238,245,.14);font-size:13px;color:rgba(232,238,245,.7);}
.footer-bottom a{color:#7FC4E4;}

/* ===== 响应式 ===== */
@media (max-width:1023px){
  .quick-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
  .cta-inner{grid-template-columns:1fr;gap:24px;}
  .cta-actions{justify-content:flex-start;}
}
@media (max-width:767px){
  .header-inner{min-height:64px;gap:12px;}
  .nav-search{display:none;}
  .brand{font-size:17px;}
  .brand-mark{width:34px;height:34px;}
  .article-hero{padding:24px 0 32px;}
  .article-section{padding:36px 0 20px;}
  .article-foot{padding-bottom:44px;}
  .related{padding:48px 0 56px;}
  .post-nav{grid-template-columns:1fr;}
  .cta-band{padding:56px 0;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
}
@media (max-width:575px){
  .grid-container{padding-left:16px;padding-right:16px;}
  .card-grid{grid-template-columns:1fr;}
  .meta-row{gap:8px 16px;font-size:13px;}
  .footer-form{flex-direction:column;}
  .footer-form button{width:100%;}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --c-primary:#1F6FB2;
  --c-primary-dark:#155A94;
  --c-primary-soft:#E8F2FA;
  --c-accent:#2FA39A;
  --c-warm:#E9A23B;
  --c-warm-soft:rgba(233,162,59,.12);
  --c-bg:#FFFFFF;
  --c-bg-alt:#F6F9FC;
  --c-line:#E3EAF2;
  --c-line-strong:#D9E3EE;
  --c-ink:#10202F;
  --c-ink-2:#55677A;
  --c-ink-3:#8C9AA8;
  --c-footer:#0F1F30;
  --r-card:16px;
  --r-btn:10px;
  --r-input:12px;
  --r-img:14px;
  --sh-sm:0 1px 2px rgba(16,42,72,.06);
  --sh-md:0 8px 24px -10px rgba(16,42,72,.14);
  --sh-hover:0 18px 40px -14px rgba(16,42,72,.20);
  --header-main-h:76px;
  --header-cat-h:44px;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",-apple-system,"Helvetica Neue",Arial,sans-serif;
}
/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-primary)}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.grid-container{max-width:1200px;width:100%;margin:0 auto;padding-left:24px;padding-right:24px}
.grid-margin-x{margin-left:-14px;margin-right:-14px}
.grid-margin-x>.cell{padding-left:14px;padding-right:14px}
.button,.button:hover{box-shadow:none;border-radius:var(--r-btn)}
.button{background:var(--c-primary);color:#fff;padding:0 22px;height:46px;line-height:46px;font-weight:600;transition:background .2s ease,transform .2s ease}
.button:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-2px)}
.accordion,.accordion-item,.accordion-title,.accordion-content{border:0;background:none;margin:0}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:900;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-md)}
.header-main{
  height:var(--header-main-h);
  display:flex;
  align-items:center;
  gap:24px;
  transition:height .25s ease;
}
.site-header.is-scrolled .header-main{height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;font-weight:700;font-size:18px;letter-spacing:0;color:var(--c-ink)}
.brand:hover{color:var(--c-ink)}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:var(--c-primary-soft);
  color:var(--c-primary);
}
.brand-mark svg{width:20px;height:20px}
.brand-text{white-space:nowrap}

.nav-search{
  position:relative;
  flex:1 1 auto;
  max-width:560px;
  min-width:0;
  margin:0 auto;
  display:flex;
  align-items:center;
  background:#fff;
  border:1px solid var(--c-line-strong);
  border-radius:999px;
  height:46px;
  padding-left:20px;
  padding-right:4px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(31,111,178,.15)}
.nav-search-icon{display:inline-flex;color:var(--c-ink-3);flex:0 0 auto}
.nav-search-icon svg{width:18px;height:18px}
.nav-search input{
  flex:1 1 auto;
  min-width:0;
  height:100%;
  border:0;
  outline:none;
  background:transparent;
  padding:0 12px;
  font-size:15px;
}
.nav-search input::placeholder{color:var(--c-ink-3)}
.nav-search button{
  flex:0 0 auto;
  height:38px;
  padding:0 20px;
  border-radius:999px;
  background:var(--c-primary);
  color:#fff;
  font-size:14px;
  font-weight:600;
  transition:background .2s ease;
}
.nav-search button:hover{background:var(--c-primary-dark)}

.quick-links{display:flex;align-items:center;gap:22px;flex:0 0 auto}
.quick-links a{
  font-size:15px;
  color:var(--c-ink-2);
  padding:6px 0;
  position:relative;
  white-space:nowrap;
}
.quick-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.quick-links a:hover{color:var(--c-primary)}
.quick-links a:hover::after{transform:scaleX(1)}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--c-line);
  border-radius:12px;
  align-items:center;justify-content:center;
  color:var(--c-ink);
  flex:0 0 auto;
}
.nav-toggle svg{width:20px;height:20px}

.header-cats{border-top:1px solid var(--c-line);background:#fff}
.cat-bar{display:flex;align-items:center;gap:30px;height:var(--header-cat-h);overflow-x:auto;scrollbar-width:none}
.cat-bar::-webkit-scrollbar{display:none}
.cat-bar a{
  position:relative;
  height:var(--header-cat-h);
  line-height:var(--header-cat-h);
  font-size:15px;
  color:var(--c-ink-2);
  white-space:nowrap;
}
.cat-bar a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--c-primary);transform:scaleX(0);transition:transform .22s ease;
}
.cat-bar a:hover{color:var(--c-primary)}
.cat-bar a:hover::after{transform:scaleX(1)}
.cat-bar a.active{color:var(--c-primary);font-weight:600}
.cat-bar a.active::after{transform:scaleX(1)}

/* 移动抽屉 */
.mobile-drawer{
  position:fixed;top:0;left:0;right:0;
  z-index:1200;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  box-shadow:var(--sh-hover);
  padding:18px 0 22px;
  transform:translateY(-110%);
  transition:transform .28s ease;
}
.mobile-drawer.is-open{transform:translateY(0)}
.drawer-search{display:flex;gap:10px;margin-bottom:16px}
.drawer-search input{
  flex:1 1 auto;min-width:0;height:46px;border:1px solid var(--c-line-strong);
  border-radius:999px;padding:0 18px;outline:none;background:#fff;
}
.drawer-search input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(31,111,178,.15)}
.drawer-search button{height:46px;padding:0 20px;border-radius:999px;background:var(--c-primary);color:#fff;font-weight:600}
.drawer-links{display:flex;flex-direction:column}
.drawer-links a{
  padding:13px 2px;border-bottom:1px solid var(--c-line);
  font-size:15px;color:var(--c-ink-2);
}
.drawer-links a.active{color:var(--c-primary);font-weight:600}
body.drawer-open{overflow:hidden}

/* ============ 通用按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-sm)}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-md)}
.btn-ghost{background:transparent;color:var(--c-primary);border:1px solid var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary);transform:translateY(-2px)}
.btn-text{color:var(--c-primary);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.btn-text svg{width:16px;height:16px;transition:transform .2s ease}
.btn-text:hover svg{transform:translateX(3px)}

/* 标签 / 徽章 */
.badge{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;
  font-size:13px;line-height:1.6;
  background:var(--c-primary-soft);color:var(--c-primary);
}
.badge-warm{background:var(--c-warm-soft);color:#A96C10}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;
  color:var(--c-primary);background:var(--c-primary-soft);
  padding:5px 14px;border-radius:999px;margin-bottom:18px;
}

/* ============ 面包屑 ============ */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-ink-3);padding:24px 0 0;flex-wrap:wrap}
.breadcrumb a{color:var(--c-ink-3)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:var(--c-ink-3)}
.breadcrumb .current{color:var(--c-ink-2)}

/* ============ Hero ============ */
.page-hero{
  background:linear-gradient(180deg,#F6F9FC 0%,#FFFFFF 100%);
  padding-bottom:64px;
  border-bottom:1px solid var(--c-line);
}
.hero-inner{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:center;padding-top:40px}
.hero-copy h1{
  font-size:clamp(30px,4.2vw,46px);
  font-weight:700;
  line-height:1.25;
  margin-bottom:18px;
}
.hero-sub{font-size:17px;color:var(--c-ink-2);max-width:620px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-search{max-width:520px}
.hero-search form{display:flex;align-items:center;background:#fff;border:1px solid var(--c-line-strong);border-radius:999px;height:52px;padding-left:20px;padding-right:5px;transition:border-color .2s ease,box-shadow .2s ease}
.hero-search form:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(31,111,178,.15)}
.hero-search svg{width:18px;height:18px;color:var(--c-ink-3);flex:0 0 auto}
.hero-search input{flex:1 1 auto;min-width:0;height:100%;border:0;outline:none;background:transparent;padding:0 12px;font-size:15px}
.hero-search button{height:42px;padding:0 22px;border-radius:999px;background:var(--c-primary);color:#fff;font-weight:600;font-size:14px}
.hero-search button:hover{background:var(--c-primary-dark)}
.hero-media{position:relative}
.hero-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:20px;
  box-shadow:var(--sh-md);
  background:var(--c-primary-soft);
}

/* 指标条 */
.metric-bar{
  margin-top:52px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:26px 28px;
  box-shadow:var(--sh-sm);
}
.metric{display:flex;flex-direction:column;gap:4px}
.metric strong{
  font-size:clamp(28px,3.4vw,40px);
  font-weight:700;
  line-height:1.15;
  color:var(--c-primary);
  font-variant-numeric:tabular-nums;
}
.metric span{font-size:14px;color:var(--c-ink-2)}

/* ============ 主内容布局 ============ */
.main-section{padding:88px 0}
.main-section.alt{background:var(--c-bg-alt)}
.doc-layout{align-items:flex-start}

.doc-index{
  position:sticky;
  top:calc(var(--header-main-h) + var(--header-cat-h) + 20px);
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:22px;
  box-shadow:var(--sh-sm);
}
.doc-index h2{font-size:15px;font-weight:600;color:var(--c-ink-3);margin-bottom:14px;letter-spacing:0}
.doc-index ol{display:flex;flex-direction:column}
.doc-index li+li{border-top:1px solid var(--c-line)}
.doc-index a{
  display:flex;align-items:baseline;gap:10px;
  padding:11px 0;font-size:15px;color:var(--c-ink-2);
}
.doc-index a .num{font-size:12px;color:var(--c-ink-3);font-variant-numeric:tabular-nums;flex:0 0 auto}
.doc-index a:hover,.doc-index a.is-active{color:var(--c-primary)}
.doc-index a:hover .num,.doc-index a.is-active .num{color:var(--c-primary)}

.doc-body{display:flex;flex-direction:column;gap:28px}
.cap-block{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:32px;
  box-shadow:var(--sh-sm);
  scroll-margin-top:calc(var(--header-main-h) + var(--header-cat-h) + 24px);
  transition:box-shadow .2s ease,border-color .2s ease;
}
.cap-block:hover{border-color:rgba(31,111,178,.3);box-shadow:var(--sh-md)}
.cap-head{display:flex;align-items:center;gap:14px;margin-bottom:10px}
.cap-no{
  flex:0 0 40px;width:40px;height:40px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-primary-soft);color:var(--c-primary);
  font-weight:700;font-size:15px;font-variant-numeric:tabular-nums;
}
.cap-block h3{font-size:20px;font-weight:600;line-height:1.4}
.cap-block p{color:var(--c-ink-2);margin:12px 0 18px}
.cap-list{display:grid;gap:12px}
.cap-list li{display:flex;gap:10px;align-items:flex-start;color:var(--c-ink-2);font-size:15px}
.cap-list svg{width:18px;height:18px;flex:0 0 18px;margin-top:5px;color:var(--c-accent)}
.cap-media{margin-top:22px}
.cap-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--r-img);
  background:var(--c-primary-soft);
}
.cap-media figcaption{font-size:13px;color:var(--c-ink-3);text-align:center;margin-top:10px}

/* 配置表 */
.table-block{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:32px;
  box-shadow:var(--sh-sm);
  scroll-margin-top:calc(var(--header-main-h) + var(--header-cat-h) + 24px);
}
.table-block h3{font-size:20px;font-weight:600;margin-bottom:8px}
.table-block>p{color:var(--c-ink-2);margin-bottom:22px}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--c-line);border-radius:12px}
table.config-table{width:100%;min-width:640px;border-collapse:collapse;font-size:15px}
table.config-table th{
  background:var(--c-primary-soft);
  color:var(--c-primary-dark);
  font-weight:600;
  text-align:left;
  padding:14px 18px;
  white-space:nowrap;
}
table.config-table td{padding:14px 18px;border-top:1px solid var(--c-line);color:var(--c-ink-2)}
table.config-table tbody tr:hover td{background:var(--c-bg-alt)}

/* 方案要点 */
.point-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.point-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.point-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(31,111,178,.3)}
.point-card h4{font-size:17px;font-weight:600;margin-bottom:10px}
.point-card p{font-size:15px;color:var(--c-ink-2)}

/* FAQ */
.faq-wrap{
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  background:#fff;
  overflow:hidden;
  box-shadow:var(--sh-sm);
}
.faq-item+.faq-item{border-top:1px solid var(--c-line)}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 24px;
  text-align:left;font-size:16px;font-weight:600;color:var(--c-ink);
  transition:background .2s ease,color .2s ease;
}
.faq-q:hover{background:var(--c-bg-alt);color:var(--c-primary)}
.faq-q .plus{
  flex:0 0 22px;width:22px;height:22px;position:relative;color:var(--c-primary);
  transition:transform .25s ease;
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq-q .plus::before{left:3px;right:3px;top:10px;height:2px}
.faq-q .plus::after{top:3px;bottom:3px;left:10px;width:2px}
.faq-item.is-open .faq-q{color:var(--c-primary)}
.faq-item.is-open .plus{transform:rotate(45deg)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a p{padding:0 24px 20px;color:var(--c-ink-2);font-size:15px}

/* CTA */
.cta-band{
  background:var(--c-primary-soft);
  border:1px solid rgba(31,111,178,.16);
  border-radius:20px;
  padding:48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.3;margin-bottom:10px}
.cta-band p{color:var(--c-ink-2);max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-footer);color:#E8EEF5;padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-brand .brand-mark{background:rgba(127,196,228,.14);color:#7FC4E4}
.site-footer p{color:#A9BCCE;font-size:14px;line-height:1.85}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:#A9BCCE}
.footer-links a:hover{color:#7FC4E4}
.footer-form{display:flex;gap:8px;margin-top:14px}
.footer-form input{
  flex:1 1 auto;min-width:0;height:44px;border-radius:10px;
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);
  color:#fff;padding:0 14px;outline:none;font-size:14px;
}
.footer-form input::placeholder{color:#8DA3B8}
.footer-form input:focus{border-color:#7FC4E4;box-shadow:0 0 0 3px rgba(127,196,228,.18)}
.footer-form button{
  height:44px;padding:0 18px;border-radius:10px;
  background:var(--c-primary);color:#fff;font-weight:600;font-size:14px;
  transition:background .2s ease;
}
.footer-form button:hover{background:var(--c-primary-dark)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8DA3B8;
}
.footer-bottom a{color:#7FC4E4}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .grid-container{padding-left:20px;padding-right:20px}
  .nav-search{max-width:320px}
  .quick-links{display:none}
  .nav-toggle{display:inline-flex}
  .header-main{gap:14px}
  .hero-inner{grid-template-columns:1fr;gap:32px;padding-top:28px}
  .main-section{padding:64px 0}
  .point-grid{grid-template-columns:repeat(2,1fr)}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .doc-index{
    position:static;
    margin-bottom:24px;
  }
  .doc-index ol{flex-direction:row;flex-wrap:wrap;gap:8px}
  .doc-index li+li{border-top:0}
  .doc-index a{padding:8px 14px;background:var(--c-bg-alt);border-radius:999px;font-size:14px}
}
@media (max-width:767px){
  .nav-search{display:none}
  .header-main{height:64px}
  .metric-bar{grid-template-columns:repeat(2,1fr);gap:18px;padding:22px}
  .cap-block,.table-block{padding:24px}
  .point-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:519px){
  .grid-container{padding-left:16px;padding-right:16px}
  .hero-actions .btn{width:100%}
  .hero-search form{height:48px}
  .hero-search button{padding:0 16px}
  .cta-band{padding:28px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .metric-bar{grid-template-columns:1fr 1fr;padding:18px}
}

/* roulang page: category2 */
:root{
  --c-primary:#1F6FB2;
  --c-primary-dark:#155A94;
  --c-primary-soft:#E8F2FA;
  --c-accent:#2FA39A;
  --c-warm:#E9A23B;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F6F9FC;
  --c-border:#E3EAF2;
  --c-text:#10202F;
  --c-text-2:#55677A;
  --c-text-3:#8C9AA8;
  --r-card:16px;
  --r-btn:10px;
  --r-input:12px;
  --r-pill:999px;
  --r-img:14px;
  --sh-sm:0 1px 2px rgba(16,42,72,.06);
  --sh-md:0 8px 24px -10px rgba(16,42,72,.14);
  --sh-hover:0 18px 40px -14px rgba(16,42,72,.20);
  --sec-pad:88px;
  --container:1200px;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",-apple-system,"Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary-dark);}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding-left:0;list-style:none;}
input,button,textarea,select{font-family:inherit;font-size:inherit;}

.grid-container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
@media (min-width:1440px){
  .grid-container{max-width:1280px;}
}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  letter-spacing:0;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.btn-primary{
  background:var(--c-primary);
  color:#fff;
  box-shadow:var(--sh-sm);
}
.btn-primary:hover{
  background:var(--c-primary-dark);
  color:#fff;
  transform:translateY(-2px);
  box-shadow:var(--sh-md);
}
.btn-ghost{
  background:transparent;
  color:var(--c-primary);
  border-color:var(--c-primary);
}
.btn-ghost:hover{
  background:var(--c-primary-soft);
  color:var(--c-primary-dark);
  transform:translateY(-2px);
}
.btn-light{
  background:#fff;
  color:var(--c-primary);
  border-color:rgba(255,255,255,.6);
}
.btn-light:hover{
  background:#fff;
  color:var(--c-primary-dark);
  transform:translateY(-2px);
}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  color:var(--c-primary);
}
.btn-text svg{transition:transform .2s ease;}
.btn-text:hover svg{transform:translateX(3px);}
a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--c-primary);
  outline-offset:2px;
}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:var(--r-pill);
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-size:14px;
  line-height:1.6;
  font-weight:500;
}
.badge-warm{
  background:rgba(233,162,59,.14);
  color:#B0741C;
}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:#fff;
  border-bottom:1px solid var(--c-border);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{
  box-shadow:0 6px 18px -10px rgba(16,42,72,.28);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:76px;
  transition:height .25s ease;
}
.site-header.is-scrolled .header-inner{height:64px;}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--c-text);
  font-size:19px;
  font-weight:700;
  letter-spacing:0;
}
.brand:hover{color:var(--c-primary);}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  border-radius:12px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-accent));
  color:#fff;
}
.brand-mark svg{width:22px;height:22px;}

.nav-search{
  position:relative;
  display:flex;
  align-items:center;
  flex:1 1 auto;
  max-width:560px;
  min-width:260px;
  height:46px;
  margin:0 auto;
  padding-left:46px;
  background:#fff;
  border:1px solid #D9E3EE;
  border-radius:var(--r-pill);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(31,111,178,.15);
}
.nav-search .search-icon{
  position:absolute;
  left:17px;
  width:19px;
  height:19px;
  color:var(--c-text-3);
}
.nav-search input{
  flex:1 1 auto;
  height:100%;
  min-width:0;
  border:0;
  outline:none;
  background:transparent;
  font-size:14px;
  color:var(--c-text);
}
.nav-search input::placeholder{color:var(--c-text-3);}
.nav-search button{
  flex:0 0 auto;
  height:36px;
  margin-right:5px;
  padding:0 18px;
  border:0;
  border-radius:var(--r-pill);
  background:var(--c-primary);
  color:#fff;
  font-size:14px;
  font-weight:600;
  cursor:pointer;
  transition:background-color .2s ease;
}
.nav-search button:hover{background:var(--c-primary-dark);}

.quick-links{
  display:flex;
  align-items:center;
  gap:20px;
  flex:0 0 auto;
}
.quick-links a{
  position:relative;
  font-size:15px;
  color:var(--c-text-2);
  padding:6px 0;
}
.quick-links a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--c-primary);
  border-radius:2px;
  transform:scaleX(0);
  transition:transform .2s ease;
}
.quick-links a:hover{color:var(--c-primary);}
.quick-links a:hover::after{transform:scaleX(1);}
.quick-links a.is-active{color:var(--c-primary);font-weight:600;}
.quick-links a.is-active::after{transform:scaleX(1);}

.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  align-items:center;
  justify-content:center;
  border:1px solid var(--c-border);
  border-radius:12px;
  background:#fff;
  color:var(--c-text);
  cursor:pointer;
}
.nav-toggle svg{width:22px;height:22px;}

.header-sub{
  border-top:1px solid var(--c-border);
  background:var(--c-bg-alt);
}
.sub-inner{
  display:flex;
  align-items:center;
  gap:8px;
  height:44px;
  overflow-x:auto;
  scrollbar-width:none;
}
.sub-inner::-webkit-scrollbar{display:none;}
.cat-nav{display:flex;align-items:center;gap:26px;}
.cat-nav a{
  position:relative;
  padding:12px 0;
  font-size:14px;
  color:var(--c-text-2);
  white-space:nowrap;
}
.cat-nav a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--c-primary);
  border-radius:2px;
  transform:scaleX(0);
  transition:transform .2s ease;
}
.cat-nav a:hover{color:var(--c-primary);}
.cat-nav a:hover::after{transform:scaleX(1);}
.cat-nav a.is-active{color:var(--c-primary);font-weight:600;}
.cat-nav a.is-active::after{transform:scaleX(1);}

.mobile-drawer{
  display:none;
  padding:16px 24px 24px;
  background:#fff;
  border-top:1px solid var(--c-border);
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer .drawer-search{
  display:flex;
  align-items:center;
  height:46px;
  padding-left:42px;
  position:relative;
  border:1px solid #D9E3EE;
  border-radius:var(--r-pill);
  margin-bottom:16px;
}
.mobile-drawer .drawer-search svg{
  position:absolute;left:15px;width:18px;height:18px;color:var(--c-text-3);
}
.mobile-drawer .drawer-search input{
  flex:1;border:0;outline:none;height:100%;background:transparent;font-size:14px;min-width:0;
}
.mobile-drawer nav{display:flex;flex-direction:column;}
.mobile-drawer nav a{
  padding:13px 0;
  font-size:15px;
  color:var(--c-text-2);
  border-bottom:1px solid var(--c-border);
}
.mobile-drawer nav a.is-active{color:var(--c-primary);font-weight:600;}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  padding:22px 0 0;
  font-size:14px;
  color:var(--c-text-3);
}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li::after{content:"/";color:#C6D2DE;}
.breadcrumb li:last-child::after{content:"";}
.breadcrumb a{color:var(--c-text-3);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .current{color:var(--c-text-2);}

/* ---------- Hero ---------- */
.page-hero{
  padding:36px 0 72px;
  background:
    radial-gradient(900px 420px at 12% -10%,rgba(47,163,154,.10),transparent 70%),
    linear-gradient(180deg,#F6F9FC 0%,#FFFFFF 100%);
  position:relative;
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-120px;top:-80px;
  width:420px;height:420px;
  background-image:radial-gradient(rgba(31,111,178,.14) 1px,transparent 1px);
  background-size:18px 18px;
  opacity:.5;
  pointer-events:none;
}
.hero-grid{display:flex;flex-wrap:wrap;align-items:center;gap:56px;position:relative;z-index:1;}
.hero-copy{flex:1 1 460px;min-width:300px;}
.hero-media{flex:1 1 400px;min-width:280px;}
.hero-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:20px;
  box-shadow:var(--sh-md);
  background:var(--c-primary-soft);
}
.hero-eyebrow{margin-bottom:16px;}
.page-hero h1{
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.25;
  font-weight:700;
  margin-bottom:18px;
}
.hero-sub{
  font-size:17px;
  color:var(--c-text-2);
  max-width:600px;
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.hero-search{
  position:relative;
  display:flex;
  align-items:center;
  max-width:520px;
  height:50px;
  padding-left:48px;
  background:#fff;
  border:1px solid #D9E3EE;
  border-radius:var(--r-pill);
  box-shadow:var(--sh-sm);
}
.hero-search:focus-within{
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(31,111,178,.15);
}
.hero-search svg{position:absolute;left:18px;width:20px;height:20px;color:var(--c-text-3);}
.hero-search input{flex:1;min-width:0;height:100%;border:0;outline:none;background:transparent;font-size:15px;}
.hero-search button{
  height:40px;margin-right:5px;padding:0 20px;border:0;border-radius:var(--r-pill);
  background:var(--c-primary);color:#fff;font-size:14px;font-weight:600;cursor:pointer;
  transition:background-color .2s ease;
}
.hero-search button:hover{background:var(--c-primary-dark);}

/* ---------- 指标条 ---------- */
.metrics{
  padding:36px 0 0;
}
.metrics-inner{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  padding:28px 32px;
  border:1px solid var(--c-border);
  border-radius:var(--r-card);
  background:#fff;
  box-shadow:var(--sh-sm);
}
.metric{text-align:left;}
.metric-num{
  font-size:clamp(30px,3.4vw,42px);
  font-weight:700;
  line-height:1.1;
  color:var(--c-primary);
  font-variant-numeric:tabular-nums;
  margin-bottom:6px;
}
.metric-label{font-size:14px;color:var(--c-text-2);}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sec-pad) 0;}
.section-alt{background:var(--c-bg-alt);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head h2{
  font-size:clamp(24px,3vw,34px);
  line-height:1.3;
  font-weight:700;
  margin-bottom:14px;
}
.section-head p{color:var(--c-text-2);font-size:16px;}

/* ---------- 全宽说明 + 要点 ---------- */
.intro-layout{display:grid;grid-template-columns:1.35fr 1fr;gap:48px;align-items:start;}
.intro-text p{color:var(--c-text-2);margin-bottom:18px;}
.intro-text p:last-child{margin-bottom:0;}
.intro-side{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--r-card);
  padding:28px;
  box-shadow:var(--sh-sm);
}
.intro-side h3{font-size:18px;font-weight:600;margin-bottom:16px;}
.intro-side .chip-row{margin-bottom:22px;}
.intro-side ul{display:flex;flex-direction:column;gap:14px;}
.intro-side li{
  display:flex;
  gap:12px;
  font-size:15px;
  color:var(--c-text-2);
  line-height:1.75;
}
.check{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:22px;height:22px;
  margin-top:3px;
  border-radius:50%;
  background:var(--c-primary-soft);
  color:var(--c-primary);
}
.check svg{width:13px;height:13px;}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;padding:8px 0;}
.timeline::before{
  content:"";
  position:absolute;
  left:50%;
  top:0;
  bottom:0;
  width:2px;
  transform:translateX(-1px);
  background:linear-gradient(180deg,rgba(31,111,178,.05),rgba(31,111,178,.45),rgba(47,163,154,.35),rgba(31,111,178,.05));
}
.tl-item{position:relative;margin-bottom:52px;}
.tl-item:last-child{margin-bottom:0;}
.tl-marker{
  position:absolute;
  left:50%;
  top:10px;
  transform:translateX(-50%);
  z-index:2;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:52px;height:52px;
  border-radius:50%;
  background:#fff;
  border:2px solid var(--c-primary);
  color:var(--c-primary);
  font-size:16px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  box-shadow:0 0 0 6px #fff;
}
.tl-card{
  width:calc(50% - 60px);
  display:flex;
  gap:20px;
  align-items:center;
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.tl-card:hover{
  transform:translateY(-4px);
  border-color:rgba(31,111,178,.3);
  box-shadow:var(--sh-hover);
}
.tl-item:nth-child(even) .tl-card{
  margin-left:auto;
  flex-direction:row-reverse;
}
.tl-text{flex:1 1 auto;min-width:0;}
.tl-text h3{font-size:19px;font-weight:600;margin-bottom:10px;}
.tl-text p{font-size:15px;color:var(--c-text-2);}
.tl-media{flex:0 0 148px;}
.tl-media img{
  width:148px;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-img);
  background:var(--c-primary-soft);
}

/* ---------- 场景卡 ---------- */
.scene-grid .cell{margin-bottom:28px;}
.scene-card{
  height:100%;
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.scene-card:hover{
  transform:translateY(-4px);
  border-color:rgba(31,111,178,.3);
  box-shadow:var(--sh-hover);
}
.scene-card img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  background:var(--c-primary-soft);
}
.scene-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto;}
.scene-body h3{font-size:19px;font-weight:600;}
.scene-body p{font-size:15px;color:var(--c-text-2);}
.scene-meta{
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--c-border);
  font-size:13px;
  color:var(--c-text-3);
  display:flex;
  justify-content:space-between;
  gap:10px;
}

/* ---------- 规模适配 ---------- */
.scale-list{display:flex;flex-direction:column;gap:18px;}
.scale-item{
  display:flex;
  gap:24px;
  align-items:flex-start;
  padding:26px 28px;
  background:#fff;
  border:1px solid var(--c-border);
  border-left:4px solid var(--c-primary);
  border-radius:var(--r-card);
  box-shadow:var(--sh-sm);
  transition:transform .25s ease,box-shadow .25s ease;
}
.scale-item:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.scale-tag{
  flex:0 0 150px;
  font-size:16px;
  font-weight:600;
  color:var(--c-primary);
}
.scale-body{flex:1 1 auto;}
.scale-body h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.scale-body p{font-size:15px;color:var(--c-text-2);}

/* ---------- FAQ ---------- */
.faq-wrap{
  border:1px solid var(--c-border);
  border-radius:var(--r-card);
  background:#fff;
  overflow:hidden;
  box-shadow:var(--sh-sm);
}
.faq-item + .faq-item{border-top:1px solid var(--c-border);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:56px;
  padding:16px 26px;
  border:0;
  background:transparent;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--c-text);
  cursor:pointer;
  transition:background-color .2s ease;
}
.faq-q:hover{background:var(--c-bg-alt);}
.faq-icon{
  flex:0 0 auto;
  width:20px;height:20px;
  color:var(--c-primary);
  transition:transform .25s ease;
}
.faq-q[aria-expanded="true"] .faq-icon{transform:rotate(45deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a p{
  padding:0 26px 22px;
  font-size:15px;
  color:var(--c-text-2);
}

/* ---------- CTA ---------- */
.cta-band{
  border-radius:24px;
  padding:56px 48px;
  background:
    radial-gradient(600px 300px at 88% 10%,rgba(47,163,154,.18),transparent 70%),
    linear-gradient(120deg,#E8F2FA 0%,#F6F9FC 100%);
  border:1px solid var(--c-border);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:32px;
}
.cta-copy{flex:1 1 420px;min-width:280px;}
.cta-copy h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;margin-bottom:14px;}
.cta-copy p{color:var(--c-text-2);max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- Footer ---------- */
.site-footer{
  background:#0F1F30;
  color:#E8EEF5;
  padding:64px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1.5fr;
  gap:36px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:18px;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
}
.footer-brand .brand-mark{
  background:linear-gradient(135deg,#1F6FB2,#2FA39A);
}
.site-footer p{
  font-size:14px;
  line-height:1.85;
  color:#A9BACB;
}
.footer-title{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
}
.footer-links{display:flex;flex-direction:column;}
.footer-links a{
  font-size:14px;
  color:#C9D6E4;
  padding:5px 0;
}
.footer-links a:hover{color:#7FC4E4;}
.footer-form{
  display:flex;
  gap:8px;
  margin-top:14px;
}
.footer-form input{
  flex:1 1 auto;
  min-width:0;
  height:44px;
  padding:0 14px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.07);
  color:#fff;
  font-size:14px;
  outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.footer-form input::placeholder{color:#8FA3B8;}
.footer-form input:focus{
  border-color:#7FC4E4;
  box-shadow:0 0 0 3px rgba(127,196,228,.18);
}
.footer-form button{
  flex:0 0 auto;
  height:44px;
  padding:0 18px;
  border:0;
  border-radius:10px;
  background:var(--c-primary);
  color:#fff;
  font-size:14px;
  font-weight:600;
  cursor:pointer;
  transition:background-color .2s ease;
}
.footer-form button:hover{background:var(--c-primary-dark);}
.footer-bottom{
  margin-top:48px;
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:#8FA3B8;
}
.footer-bottom a{color:#7FC4E4;}
.footer-bottom a:hover{color:#A9DCF2;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--sec-pad:76px;}
}
@media (max-width:1023px){
  :root{--sec-pad:64px;}
  .quick-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-search{display:none;}
  .intro-layout{grid-template-columns:1fr;gap:32px;}
  .metrics-inner{grid-template-columns:repeat(2,1fr);gap:24px;padding:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .tl-card{width:calc(50% - 52px);flex-direction:column;align-items:flex-start;}
  .tl-item:nth-child(even) .tl-card{flex-direction:column;}
  .tl-media{flex:0 0 auto;width:100%;}
  .tl-media img{width:100%;aspect-ratio:16/10;}
}
@media (max-width:767px){
  :root{--sec-pad:52px;}
  .grid-container{padding-left:18px;padding-right:18px;}
  .header-inner{height:64px;gap:12px;}
  .brand{font-size:17px;}
  .brand-mark{width:34px;height:34px;border-radius:10px;}
  .page-hero{padding:24px 0 52px;}
  .hero-grid{gap:32px;}
  .hero-actions .btn{flex:1 1 auto;}
  .timeline::before{left:18px;}
  .tl-marker{
    left:18px;
    top:6px;
    width:44px;height:44px;
    font-size:14px;
  }
  .tl-card{
    width:100%;
    margin-left:0 !important;
    padding:20px 20px 20px 22px;
    flex-direction:column;
    align-items:flex-start;
  }
  .tl-item{padding-left:0;}
  .tl-item:nth-child(even) .tl-card{flex-direction:column;}
  .tl-item .tl-card{margin-left:66px !important;width:calc(100% - 66px);}
  .metrics-inner{grid-template-columns:repeat(2,1fr);padding:20px;}
  .metric-num{font-size:28px;}
  .scale-item{flex-direction:column;gap:10px;padding:22px 20px;}
  .scale-tag{flex:0 0 auto;}
  .cta-band{padding:36px 24px;border-radius:20px;}
  .cta-actions .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .faq-q{padding:16px 18px;font-size:15px;}
  .faq-a p{padding:0 18px 20px;}
}
@media (max-width:519px){
  .metrics-inner{grid-template-columns:1fr;}
  .hero-search{height:46px;}
  .hero-search button{padding:0 14px;}
  .footer-form{flex-wrap:wrap;}
  .footer-form button{width:100%;}
}
@media (min-width:768px){
  .mobile-drawer{display:none !important;}
}

/* roulang page: category3 */
:root{
  --c-primary:#1F6FB2;
  --c-primary-dark:#155A94;
  --c-primary-light:#E8F2FA;
  --c-accent:#2FA39A;
  --c-warm:#E9A23B;
  --c-bg:#FFFFFF;
  --c-bg-soft:#F6F9FC;
  --c-border:#E3EAF2;
  --t-strong:#10202F;
  --t-body:#55677A;
  --t-weak:#8C9AA8;
  --r-card:16px;
  --r-btn:10px;
  --r-input:12px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(16,42,72,.06);
  --sh-md:0 8px 24px -10px rgba(16,42,72,.14);
  --sh-lg:0 18px 40px -14px rgba(16,42,72,.20);
  --sp-section:88px;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",-apple-system,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--t-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4{color:var(--t-strong);font-style:normal;letter-spacing:0;margin:0;}
h1{font-size:clamp(30px,4.2vw,46px);line-height:1.25;font-weight:700;}
h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;}
h3{font-size:20px;line-height:1.45;font-weight:600;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
p{margin:0 0 12px;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary-dark);}
img{display:block;max-width:100%;height:auto;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;border:0;background:none;cursor:pointer;color:inherit;}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--t-strong);}
svg{display:block;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:6px;}

/* 布局骨架 */
.grid-container{width:100%;max-width:1200px;margin-left:auto;margin-right:auto;padding-left:24px;padding-right:24px;}
.section{padding:var(--sp-section) 0;}
.section-soft{background:var(--c-bg-soft);border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border);}
.section-head{max-width:780px;margin-bottom:44px;}
.section-title{margin:0 0 14px;}
.section-desc{margin:0;font-size:16.5px;color:var(--t-body);}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;color:var(--c-primary);
  background:var(--c-primary-light);border-radius:var(--r-pill);
  padding:4px 12px;margin-bottom:14px;line-height:1.6;
}
.soft-grid-bg{
  background-image:radial-gradient(rgba(31,111,178,.05) 1px,transparent 1px);
  background-size:16px 16px;
}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:600;line-height:1;border:1px solid transparent;
  transition:transform .2s ease,background-color .2s ease,border-color .2s ease,color .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-sm);}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-md);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-light);color:var(--c-primary-dark);transform:translateY(-2px);}
.btn-light{background:#fff;color:var(--c-primary);border-color:var(--c-border);}
.btn-light:hover{background:var(--c-primary-light);color:var(--c-primary-dark);}
.btn-block{width:100%;}
.btn-sm{height:40px;font-size:14.5px;padding:0 18px;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-primary);}
.text-link svg{width:16px;height:16px;transition:transform .2s ease;}
.text-link:hover svg{transform:translateX(3px);}

/* 徽章与标签 */
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;line-height:1;background:var(--c-primary-light);color:var(--c-primary);
}
.badge-warm{background:rgba(233,162,59,.14);color:#A9713A;}
.badge-accent{background:rgba(47,163,154,.12);color:#1F7C74;}
.badge-on-media{position:absolute;top:14px;left:14px;background:rgba(255,255,255,.94);color:var(--c-primary);box-shadow:var(--sh-sm);}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--c-border);
  -webkit-backdrop-filter:saturate(180%) blur(10px);
  backdrop-filter:saturate(180%) blur(10px);
  transition:box-shadow .25s ease;
}
.site-header.is-compact{box-shadow:var(--sh-md);}
.nav-top-inner{display:flex;align-items:center;gap:22px;height:76px;transition:height .25s ease;}
.site-header.is-compact .nav-top-inner{height:64px;}
.brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--t-strong);flex:0 0 auto;}
.brand:hover{color:var(--c-primary);}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:var(--c-primary-light);color:var(--c-primary);border:1px solid #D5E6F4;flex:0 0 auto;
}
.brand-mark svg{width:20px;height:20px;}
.nav-search{position:relative;flex:1 1 auto;max-width:560px;margin:0 auto;}
.nav-search input[type="search"]{
  width:100%;height:46px;border-radius:var(--r-pill);border:1px solid #D9E3EE;
  background:#fff;padding:0 108px 0 48px;font-size:15px;color:var(--t-strong);
  transition:border-color .2s ease,box-shadow .2s ease;margin:0;
}
.nav-search input[type="search"]::placeholder{color:var(--t-weak);}
.nav-search input[type="search"]:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(31,111,178,.15);outline:none;}
.search-icon{position:absolute;left:18px;top:50%;transform:translateY(-50%);width:20px;height:20px;color:var(--t-weak);pointer-events:none;}
.search-icon svg{width:20px;height:20px;}
.nav-search button{
  position:absolute;right:5px;top:5px;height:36px;padding:0 18px;border-radius:var(--r-pill);
  background:var(--c-primary);color:#fff;font-size:14px;font-weight:600;transition:background-color .2s ease;
}
.nav-search button:hover{background:var(--c-primary-dark);}
.quick-links{display:flex;align-items:center;gap:4px;flex:0 0 auto;}
.quick-links a{font-size:14px;color:var(--t-body);padding:8px 12px;border-radius:var(--r-pill);transition:background-color .2s ease,color .2s ease;}
.quick-links a:hover{background:var(--c-primary-light);color:var(--c-primary-dark);}
.quick-links a.active{background:var(--c-primary-light);color:var(--c-primary);font-weight:600;}
.icon-btn{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--c-border);
  align-items:center;justify-content:center;color:var(--t-strong);background:#fff;flex:0 0 auto;
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.icon-btn:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-light);}
.icon-btn svg{width:22px;height:22px;}
.nav-sub{border-top:1px solid var(--c-border);background:#fff;}
.nav-sub-inner{display:flex;align-items:center;height:44px;overflow-x:auto;scrollbar-width:none;}
.nav-sub-inner::-webkit-scrollbar{display:none;}
.category-bar{display:flex;align-items:center;gap:26px;white-space:nowrap;}
.category-bar a{position:relative;font-size:14.5px;color:var(--t-body);padding:6px 0;transition:color .2s ease;}
.category-bar a::after{
  content:"";position:absolute;left:0;right:0;bottom:-9px;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.category-bar a:hover{color:var(--c-primary);}
.category-bar a:hover::after,.category-bar a.active::after{transform:scaleX(1);}
.category-bar a.active{color:var(--c-primary);font-weight:600;}

.mobile-panel{
  display:none;position:absolute;left:0;right:0;top:100%;background:#fff;
  border-bottom:1px solid var(--c-border);box-shadow:var(--sh-md);padding:18px 0 22px;
}
.mobile-panel.open{display:block;}
.mobile-search-form{position:relative;max-width:640px;margin:0 auto;}
.mobile-search-form input[type="search"]{
  width:100%;height:46px;border-radius:var(--r-pill);border:1px solid #D9E3EE;
  padding:0 104px 0 46px;font-size:15px;margin:0;
}
.mobile-search-form input[type="search"]:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(31,111,178,.15);outline:none;}
.mobile-search-form button{
  position:absolute;right:5px;top:5px;height:36px;padding:0 16px;border-radius:var(--r-pill);
  background:var(--c-primary);color:#fff;font-size:14px;font-weight:600;
}
.drawer-title{font-size:13px;font-weight:600;color:var(--t-weak);margin:6px 0 10px;}
.drawer-links{display:flex;flex-direction:column;gap:2px;margin-bottom:18px;}
.drawer-links a{
  display:block;padding:11px 14px;border-radius:12px;font-size:15px;color:var(--t-strong);
  border:1px solid transparent;transition:background-color .2s ease,border-color .2s ease,color .2s ease;
}
.drawer-links a:hover{background:var(--c-bg-soft);border-color:var(--c-border);color:var(--c-primary);}
.drawer-links a.active{background:var(--c-primary-light);color:var(--c-primary);font-weight:600;}

/* 面包屑 */
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--t-weak);margin-bottom:22px;}
.breadcrumb a{color:var(--t-weak);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#C6D2DE;}

/* Hero */
.hero{
  position:relative;border-bottom:1px solid var(--c-border);
  background-color:#F2F8FD;
  background-image:
    linear-gradient(96deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.93) 40%,rgba(255,255,255,.62) 68%,rgba(255,255,255,.28) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center right;
  background-repeat:no-repeat;
}
.hero-inner{
  display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;
  padding:52px 0 40px;
}
.hero-copy{max-width:660px;}
.hero-title{margin:0 0 18px;}
.hero-sub{font-size:17px;color:var(--t-body);margin:0 0 28px;max-width:620px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-side{display:flex;justify-content:flex-end;}
.hero-card{
  width:100%;max-width:420px;background:#fff;border:1px solid var(--c-border);
  border-radius:var(--r-card);box-shadow:var(--sh-md);padding:26px;
}
.hero-card-title{font-size:17px;font-weight:600;color:var(--t-strong);margin-bottom:16px;}
.hero-search{position:relative;margin-bottom:16px;}
.hero-search input[type="search"]{
  width:100%;height:48px;border-radius:var(--r-pill);border:1px solid #D9E3EE;background:#fff;
  padding:0 100px 0 46px;font-size:15px;margin:0;transition:border-color .2s ease,box-shadow .2s ease;
}
.hero-search input[type="search"]:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(31,111,178,.15);outline:none;}
.hero-search button{
  position:absolute;right:5px;top:5px;height:38px;padding:0 18px;border-radius:var(--r-pill);
  background:var(--c-primary);color:#fff;font-size:14px;font-weight:600;transition:background-color .2s ease;
}
.hero-search button:hover{background:var(--c-primary-dark);}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:var(--c-bg-soft);border:1px solid var(--c-border);font-size:13.5px;color:var(--t-body);
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.tag:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-light);}

/* 数据条 */
.stats-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);overflow:hidden;margin-bottom:-46px;position:relative;z-index:2;
}
.stat{padding:24px 26px;border-right:1px solid var(--c-border);}
.stat:last-child{border-right:0;}
.stat-num{
  display:block;font-size:clamp(28px,3.2vw,40px);font-weight:700;color:var(--c-primary);
  font-variant-numeric:tabular-nums;line-height:1.2;margin-bottom:4px;
}
.stat-label{font-size:14px;color:var(--t-body);}

/* 案例瀑布 */
.case-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
.case-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:rgba(31,111,178,.3);}
.case-media{position:relative;}
.case-media img{width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--c-primary-light);border-radius:0;}
.case-body{padding:26px 26px 28px;display:flex;flex-direction:column;flex:1;}
.case-title{margin:0 0 14px;}
.case-metrics{display:flex;gap:28px;margin-bottom:18px;padding-bottom:18px;border-bottom:1px solid var(--c-border);}
.metric-num{
  display:block;font-size:30px;font-weight:700;color:var(--c-accent);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.metric-label{font-size:13.5px;color:var(--t-weak);}
.case-quote{
  margin:0 0 16px;padding:14px 18px;border-left:3px solid var(--c-primary);
  background:var(--c-primary-light);border-radius:0 12px 12px 0;font-size:15.5px;color:var(--t-body);
}
.case-meta{font-size:13.5px;color:var(--t-weak);margin:auto 0 0;}

/* 价格档位 */
.plan-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;align-items:stretch;}
.plan-card{
  position:relative;display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-border);
  border-radius:var(--r-card);padding:30px 28px;box-shadow:var(--sh-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:rgba(31,111,178,.3);}
.plan-card.featured{border:2px solid var(--c-primary);box-shadow:var(--sh-lg);}
.ribbon{
  position:absolute;top:-13px;left:28px;height:26px;display:inline-flex;align-items:center;
  padding:0 14px;border-radius:var(--r-pill);background:rgba(233,162,59,.16);color:#A9713A;
  font-size:13px;font-weight:600;border:1px solid rgba(233,162,59,.34);
}
.plan-name{font-size:19px;font-weight:600;color:var(--t-strong);margin-bottom:10px;}
.plan-price{display:flex;align-items:baseline;gap:8px;margin-bottom:12px;}
.price-num{font-size:36px;font-weight:700;color:var(--t-strong);font-variant-numeric:tabular-nums;line-height:1.1;}
.price-unit{font-size:14px;color:var(--t-weak);}
.plan-desc{font-size:14.5px;color:var(--t-body);margin:0 0 20px;padding-bottom:20px;border-bottom:1px solid var(--c-border);}
.plan-list{display:flex;flex-direction:column;gap:12px;margin:0 0 26px;}
.plan-list li{position:relative;padding-left:26px;font-size:15px;color:var(--t-body);line-height:1.7;}
.plan-list li::before{
  content:"";position:absolute;left:2px;top:.62em;width:11px;height:6px;
  border-left:2px solid var(--c-accent);border-bottom:2px solid var(--c-accent);transform:rotate(-45deg);
}
.plan-card .btn{margin-top:auto;}

/* 参数对比表 */
.table-wrap{
  overflow-x:auto;background:#fff;border:1px solid var(--c-border);
  border-radius:var(--r-card);box-shadow:var(--sh-sm);-webkit-overflow-scrolling:touch;
}
table.compare{width:100%;min-width:780px;border-collapse:collapse;font-size:15px;}
.compare caption{text-align:left;padding:20px 24px 0;font-size:15px;color:var(--t-weak);}
.compare th,.compare td{padding:16px 24px;text-align:left;border-bottom:1px solid var(--c-border);vertical-align:top;}
.compare thead th{background:var(--c-primary-light);color:var(--t-strong);font-weight:600;font-size:15px;white-space:nowrap;}
.compare tbody th{font-weight:600;color:var(--t-strong);background:#FBFDFF;white-space:nowrap;}
.compare tbody tr:last-child th,.compare tbody tr:last-child td{border-bottom:0;}
.compare tbody tr:hover td{background:#FBFDFF;}
.compare .col-featured{background:rgba(31,111,178,.05);}

/* 流程 */
.flow-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.flow-step{
  position:relative;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--sh-sm);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.flow-step:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:rgba(31,111,178,.3);}
.flow-num{
  display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:12px;
  background:var(--c-primary-light);color:var(--c-primary);font-weight:700;font-size:15px;
  font-variant-numeric:tabular-nums;margin-bottom:16px;
}
.flow-step h3{font-size:17.5px;margin-bottom:8px;}
.flow-step p{font-size:14.8px;margin:0;color:var(--t-body);}

/* 图文区块 */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card);background:var(--c-primary-light);box-shadow:var(--sh-md);}
.split-copy h2{margin-bottom:16px;}
.check-list{display:flex;flex-direction:column;gap:12px;margin-top:20px;}
.check-list li{position:relative;padding-left:26px;font-size:15.5px;}
.check-list li::before{
  content:"";position:absolute;left:2px;top:.62em;width:11px;height:6px;
  border-left:2px solid var(--c-accent);border-bottom:2px solid var(--c-accent);transform:rotate(-45deg);
}

/* FAQ */
.faq{border:1px solid var(--c-border);border-radius:var(--r-card);background:#fff;overflow:hidden;box-shadow:var(--sh-sm);}
.faq-item + .faq-item{border-top:1px solid var(--c-border);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:16px 24px;text-align:left;font-size:16.5px;font-weight:600;color:var(--t-strong);
  transition:background-color .2s ease;
}
.faq-q:hover{background:var(--c-bg-soft);}
.faq-icon{flex:0 0 auto;width:22px;height:22px;color:var(--c-primary);transition:transform .22s ease;}
.faq-icon svg{width:22px;height:22px;}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-a{display:none;padding:0 24px 20px;font-size:15.5px;color:var(--t-body);}
.faq-a p{margin:0 0 10px;}
.faq-a p:last-child{margin-bottom:0;}
.faq-item.open .faq-a{display:block;}

/* CTA */
.cta-band{
  background-color:#F2F8FD;
  background-image:linear-gradient(120deg,rgba(255,255,255,.96),rgba(255,255,255,.86)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;border-top:1px solid var(--c-border);
}
.cta-inner{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:var(--sp-section) 0;}
.cta-copy h2{margin-bottom:16px;}
.cta-copy p{font-size:16.5px;max-width:520px;}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.cta-form-card{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);padding:30px;box-shadow:var(--sh-md);}
.cta-form-card .form-title{font-size:18px;font-weight:600;color:var(--t-strong);margin-bottom:20px;}
.field{display:flex;flex-direction:column;gap:7px;margin-bottom:16px;}
.field label{font-size:14px;font-weight:600;color:var(--t-strong);}
.field input,.field select,.field textarea{
  width:100%;border:1px solid #D9E3EE;border-radius:var(--r-input);background:#fff;
  padding:0 14px;height:46px;margin:0;transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:auto;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(31,111,178,.15);outline:none;}
.field input::placeholder,.field textarea::placeholder{color:var(--t-weak);}
.form-note{font-size:13.5px;color:var(--t-weak);margin:14px 0 0;}

/* 页脚 */
.site-footer{background:#0F1F30;color:#E8EEF5;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:34px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;margin-bottom:14px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.18);color:#7FC4E4;}
.site-footer p{color:#B9C7D6;font-size:14px;line-height:1.8;margin:0 0 8px;}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:#B9C7D6;}
.footer-links a:hover{color:#7FC4E4;}
.footer-form{display:flex;gap:8px;margin-top:12px;}
.footer-form input{
  flex:1 1 auto;min-width:0;height:42px;border-radius:10px;border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.07);color:#fff;padding:0 14px;font-size:14px;margin:0;
}
.footer-form input::placeholder{color:#8FA3B8;}
.footer-form input:focus{border-color:#7FC4E4;box-shadow:0 0 0 3px rgba(127,196,228,.18);outline:none;}
.footer-form button{
  height:42px;padding:0 18px;border-radius:10px;background:var(--c-primary);color:#fff;
  font-size:14px;font-weight:600;transition:background-color .2s ease;
}
.footer-form button:hover{background:var(--c-primary-dark);}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;
  font-size:13px;color:#8FA3B8;
}
.footer-bottom a{color:#7FC4E4;}

/* 响应式 */
@media (max-width:1279px){
  :root{--sp-section:76px;}
}
@media (max-width:1023px){
  :root{--sp-section:64px;}
  .nav-search{display:none;}
  .icon-btn{display:inline-flex;}
  .nav-top-inner{gap:14px;}
  .quick-links a{padding:8px 10px;}
  .hero-inner{grid-template-columns:1fr;gap:32px;padding:40px 0 32px;}
  .hero-side{justify-content:flex-start;}
  .hero-card{max-width:100%;}
  .stats-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat:nth-child(2){border-right:0;}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--c-border);}
  .plan-grid{grid-template-columns:1fr;max-width:560px;margin-left:auto;margin-right:auto;}
  .plan-card.featured{transform:none;}
  .flow-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .split{grid-template-columns:1fr;gap:28px;}
  .cta-inner{grid-template-columns:1fr;gap:32px;padding:var(--sp-section) 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .quick-links{display:none;}
  .brand{font-size:15.5px;}
  .brand-mark{width:30px;height:30px;}
  .case-grid{grid-template-columns:1fr;gap:22px;}
  .stats-strip{margin-bottom:-32px;}
  .case-metrics{gap:20px;}
}
@media (max-width:575px){
  .grid-container{padding-left:18px;padding-right:18px;}
  :root{--sp-section:52px;}
  .hero-actions .btn{width:100%;}
  .stats-strip{grid-template-columns:1fr;}
  .stat{border-right:0;border-bottom:1px solid var(--c-border);}
  .stat:last-child{border-bottom:0;}
  .flow-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .plan-card{padding:26px 20px;}
  .cta-form-card{padding:22px;}
  .faq-q{font-size:15.5px;padding:14px 18px;}
  .faq-a{padding:0 18px 18px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}