/* roulang page: index */
:root{
  --primary:#1657D6;
  --primary-dark:#0F3E9E;
  --green:#00B487;
  --orange:#FF7A45;
  --danger:#D93A3A;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --soft:#EEF3FD;
  --field:#F2F5FA;
  --line:#E4EAF4;
  --line-strong:#D6DFEC;
  --text:#0E1B2E;
  --text-2:#4A5A72;
  --text-3:#8394AC;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --r-pill:999px;
  --shadow:0 1px 2px rgba(16,42,86,.05),0 8px 24px rgba(16,42,86,.06);
  --shadow-hover:0 2px 4px rgba(16,42,86,.06),0 16px 36px rgba(16,42,86,.10);
  --sec-pad:96px;
  --font:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;background:rgba(184,196,214,.15);}
a{color:var(--primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--primary-dark);}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4,p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

/* ============ 容器与区块 ============ */
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;}
.section{padding:var(--sec-pad) 0;}
.section-soft{background:var(--soft);}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;letter-spacing:.04em;
  color:var(--primary);background:var(--soft);
  border:1px solid #D7E3FA;border-radius:var(--r-pill);
  padding:4px 12px;margin-bottom:16px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--green);}
h1{font-size:46px;line-height:1.18;font-weight:700;letter-spacing:-.01em;}
h2{font-size:34px;line-height:1.28;font-weight:700;letter-spacing:-.01em;}
h3{font-size:22px;line-height:1.4;font-weight:600;}
.lead{font-size:18px;line-height:1.8;color:var(--text-2);margin-top:18px;}
.section-head p{font-size:16.5px;color:var(--text-2);margin-top:14px;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--primary);
}
.text-link .arrow{transition:transform .18s ease;}
.text-link:hover .arrow{transform:translateX(3px);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:600;border:1.5px solid transparent;
  cursor:pointer;white-space:nowrap;transition:all .18s ease;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 1px 2px rgba(16,42,86,.10);}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--primary);}
.btn-ghost:hover{background:var(--soft);color:var(--primary-dark);}
.btn-sm{height:40px;padding:0 16px;font-size:14.5px;}
.btn-block{width:100%;}
.btn:active{transform:translateY(0);}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;line-height:1;
  padding:5px 10px;border-radius:var(--r-pill);
  border:1px solid #D7E3FA;background:var(--soft);color:var(--primary);
}
.badge-green{border-color:#C4EBDF;background:#EDFBF6;color:#018867;}
.badge-orange{border-color:#FFDCCB;background:#FFF3EC;color:#C4522A;}
.badge-solid{background:rgba(255,255,255,.94);color:var(--primary);border-color:#D7E3FA;backdrop-filter:blur(2px);}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.scrolled{box-shadow:0 4px 20px rgba(16,42,86,.07);}
.nav-wrap{display:flex;align-items:center;gap:24px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  width:28px;height:28px;border-radius:9px;background:var(--primary);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.brand-mark svg{width:16px;height:16px;}
.brand-text{font-size:17px;font-weight:400;letter-spacing:-.01em;white-space:nowrap;}
.brand-text strong{font-weight:700;}
.nav-main{display:flex;align-items:center;gap:26px;margin-left:8px;}
.nav-link{
  position:relative;font-size:15px;color:var(--text-2);
  padding:22px 0;font-weight:500;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:12px;height:2px;
  background:var(--primary);border-radius:2px;transform:scaleX(0);
  transform-origin:left;transition:transform .18s ease;
}
.nav-link:hover{color:var(--primary);}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
.nav-link.active{color:var(--primary);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:14px;margin-left:auto;}
.search-box{
  display:flex;align-items:center;gap:8px;
  width:240px;height:40px;padding:0 10px 0 12px;
  background:var(--field);border:1px solid transparent;border-radius:var(--r-btn);
  transition:all .18s ease;
}
.search-box:focus-within{
  background:#fff;border-color:var(--primary);width:268px;
  box-shadow:0 0 0 3px rgba(22,87,214,.12);
}
.search-box svg{width:16px;height:16px;color:var(--text-3);flex-shrink:0;}
.search-box input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--text);
}
.search-box input::placeholder{color:var(--text-3);}
.kbd{
  font-size:11.5px;color:var(--text-3);background:#fff;
  border:1px solid var(--line-strong);border-radius:6px;
  padding:2px 6px;line-height:1.4;flex-shrink:0;
}
.nav-quick{font-size:14.5px;color:var(--text-2);font-weight:500;}
.nav-quick:hover{color:var(--primary);}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-btn);
  border:1px solid var(--line-strong);background:#fff;cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--text-2);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--text-2);
}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:95;background:#fff;
  display:none;flex-direction:column;
  padding:0 18px 24px;
}
.drawer.open{display:flex;}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  height:60px;border-bottom:1px solid var(--line);
}
.drawer-close{
  width:36px;height:36px;border-radius:var(--r-btn);border:1px solid var(--line-strong);
  background:#fff;font-size:18px;color:var(--text-2);cursor:pointer;line-height:1;
}
.drawer-nav{flex:1;padding-top:8px;overflow-y:auto;}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;font-size:17px;color:var(--text);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--primary);font-weight:600;}
.drawer-foot{display:flex;flex-direction:column;gap:10px;padding-top:18px;}
.drawer-foot .btn{width:100%;}

/* ============ Hero ============ */
.hero{padding:72px 0 88px;background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.hero h1 span.hl{color:var(--primary);}
.hero-sub{font-size:18px;line-height:1.8;color:var(--text-2);margin-top:22px;max-width:560px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;border-radius:20px;box-shadow:var(--shadow);
  aspect-ratio:4/3;object-fit:cover;
}
.float-card{
  position:absolute;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--shadow);
  padding:14px 16px;
}
.float-card strong{display:block;font-size:20px;font-weight:700;color:var(--primary);line-height:1.3;}
.float-card span{font-size:12.5px;color:var(--text-3);}
.float-card-a{left:-18px;bottom:34px;}
.float-card-b{right:-14px;top:32px;}
.float-card-b strong{color:var(--green);}

/* ============ 提问列表 ============ */
.question-list{border-top:1px solid var(--line);margin-top:8px;}
.question-item{
  display:flex;align-items:center;gap:16px;
  height:64px;padding:0 12px;border-bottom:1px solid var(--line);
  transition:background .18s ease;color:var(--text);
}
.question-item:hover{background:var(--bg);color:var(--text);}
.q-index{
  width:28px;height:28px;border-radius:50%;flex-shrink:0;
  background:var(--soft);color:var(--primary);
  font-size:13px;font-weight:600;display:flex;align-items:center;justify-content:center;
}
.q-text{font-size:16px;flex:1;}
.q-arrow{color:var(--primary);flex-shrink:0;}

/* ============ 方案卡片 ============ */
.solution-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--shadow);
  padding:28px;transition:all .18s ease;display:block;color:var(--text);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);color:var(--text);}
.card-lg{grid-column:span 6;padding:0;overflow:hidden;display:flex;flex-direction:column;}
.card-lg .card-media{aspect-ratio:16/9;}
.card-lg .card-media img{width:100%;height:100%;object-fit:cover;}
.card-lg .card-body{padding:28px;}
.card-sm{grid-column:span 3;}
.card-wide{grid-column:span 6;}
.card-icon{
  width:44px;height:44px;border-radius:12px;background:var(--soft);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.card-icon svg{width:24px;height:24px;color:var(--primary);}
.card h3{margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card p{font-size:15px;line-height:1.75;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card .text-link{margin-top:18px;}
.card-wide{display:flex;gap:24px;align-items:flex-start;}
.card-wide .card-thumb{
  width:150px;flex-shrink:0;aspect-ratio:16/11;border-radius:var(--r-img);overflow:hidden;
}
.card-wide .card-thumb img{width:100%;height:100%;object-fit:cover;}

/* ============ 数据区 ============ */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.metric{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;}
.metric-value{font-size:40px;font-weight:700;color:var(--primary);line-height:1.15;letter-spacing:-.02em;}
.metric-label{font-size:15px;font-weight:600;margin-top:10px;}
.metric-note{font-size:13px;color:var(--text-3);margin-top:6px;}

/* ============ 最新信息 ============ */
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--shadow);overflow:hidden;
  transition:all .18s ease;color:var(--text);
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);color:var(--text);}
.news-cover{position:relative;aspect-ratio:16/10;overflow:hidden;}
.news-cover img{width:100%;height:100%;object-fit:cover;}
.news-cover .badge{position:absolute;left:14px;top:14px;}
.news-body{padding:22px;display:flex;flex-direction:column;flex:1;}
.news-body h3{font-size:19px;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body p{font-size:14px;line-height:1.7;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;padding-top:16px;font-size:13px;color:var(--text-3);display:flex;gap:10px;flex-wrap:wrap;}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:64px 20px;border:1px dashed var(--line-strong);border-radius:var(--r-card);
  background:#fff;color:var(--text-3);font-size:14px;text-align:center;
}
.empty-state svg{width:40px;height:40px;color:#B8C4D6;}
.pager{display:flex;justify-content:center;gap:8px;margin-top:40px;}
.pager a,.pager span{
  min-width:38px;height:38px;padding:0 12px;border-radius:var(--r-pill);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;color:var(--text-2);background:#fff;border:1px solid var(--line);
}
.pager a:hover{background:var(--soft);color:var(--primary);}
.pager .current{background:var(--primary);color:#fff;border-color:var(--primary);}

/* ============ 流程 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative;}
.step{position:relative;padding:0 22px;text-align:left;}
.step:first-child{padding-left:0;}
.step:last-child{padding-right:0;}
.step-num{
  width:44px;height:44px;border-radius:50%;background:#fff;border:1.5px solid var(--primary);
  color:var(--primary);font-weight:700;font-size:16px;
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.step h3{font-size:18px;margin-bottom:8px;}
.step p{font-size:14.5px;color:var(--text-2);line-height:1.7;}
.step:not(:last-child)::after{
  content:"";position:absolute;top:22px;right:-8px;width:calc(100% - 60px);
  border-top:1.5px dashed #C9D6EC;
}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-img);
  overflow:hidden;transition:box-shadow .18s ease;
}
.faq-item.active{box-shadow:var(--shadow);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:transparent;border:0;text-align:left;cursor:pointer;
  font-size:16.5px;font-weight:600;color:var(--text);position:relative;
}
.faq-item.active .faq-q{color:var(--primary);}
.faq-item.active .faq-q::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:2px;
  background:var(--primary);border-radius:2px;
}
.faq-icon{
  width:22px;height:22px;flex-shrink:0;position:relative;
  color:var(--text-3);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
.faq-icon::before{left:4px;right:4px;top:10px;height:2px;}
.faq-icon::after{top:4px;bottom:4px;left:10px;width:2px;}
.faq-item.active .faq-icon{color:var(--primary);}
.faq-item.active .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-a{display:none;padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--text-2);}
.faq-item.active .faq-a{display:block;}

/* ============ 表单弹层 ============ */
.cta-panel{
  background:var(--soft);border:1px solid #DCE7FB;border-radius:var(--r-card);
  padding:36px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-panel h2{font-size:26px;}
.cta-panel p{font-size:15.5px;color:var(--text-2);margin-top:10px;}
.overlay{
  display:none;position:fixed;inset:0;z-index:120;
  background:rgba(14,27,46,.45);
  align-items:center;justify-content:center;padding:20px;
}
.overlay.open{display:flex;}
.modal{
  width:460px;max-width:100%;background:#fff;border-radius:18px;
  padding:28px;box-shadow:0 24px 60px rgba(14,27,46,.24);max-height:90vh;overflow-y:auto;
}
.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:20px;}
.modal-head h3{font-size:21px;}
.modal-head p{font-size:14px;color:var(--text-3);margin-top:6px;}
.modal-close{
  width:34px;height:34px;border-radius:var(--r-btn);border:1px solid var(--line-strong);
  background:#fff;color:var(--text-2);font-size:18px;line-height:1;cursor:pointer;flex-shrink:0;
}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;}
.field .req{color:var(--danger);}
.field input[type=text],.field textarea{
  width:100%;border:1px solid var(--line-strong);border-radius:var(--r-btn);
  background:#fff;padding:0 14px;height:48px;font-size:15px;outline:none;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:auto;padding:12px 14px;resize:vertical;min-height:104px;line-height:1.7;}
.field input[type=text]:focus,.field textarea:focus{
  border-color:var(--primary);box-shadow:0 0 0 3px rgba(22,87,214,.12);
}
.field.invalid input[type=text],.field.invalid textarea{border-color:var(--danger);}
.err-msg{display:none;font-size:12.5px;color:var(--danger);margin-top:6px;}
.field.invalid .err-msg{display:block;}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-2);line-height:1.7;}
.check-row input{margin-top:5px;width:16px;height:16px;accent-color:var(--primary);flex-shrink:0;}
.form-note{font-size:12.5px;color:var(--text-3);margin-top:14px;text-align:center;}

/* ============ 隐私说明条 ============ */
.privacy-bar{
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  font-size:14px;color:var(--text-3);padding:26px 0 0;
}
.privacy-bar::before{
  content:"·";color:var(--text-3);
}

/* ============ 页脚 ============ */
.site-footer{background:#F6F8FC;border-top:1px solid var(--line);padding:60px 0 0;margin-top:72px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:13.5px;color:var(--text-2);line-height:1.8;max-width:280px;}
.social-row{display:flex;gap:12px;margin-top:18px;}
.social-row a{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);
  background:#fff;display:flex;align-items:center;justify-content:center;color:var(--text-2);
}
.social-row a:hover{color:var(--primary);border-color:#C9DBF9;}
.social-row svg{width:17px;height:17px;}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:16px;color:var(--text);}
.footer-col li{margin-bottom:11px;}
.footer-col a{font-size:13.5px;color:var(--text-2);}
.footer-col a:hover{color:var(--primary);}
.footer-col p{font-size:13.5px;color:var(--text-2);line-height:1.9;}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom nav{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom a{color:var(--text-3);font-size:13px;}
.footer-bottom a:hover{color:var(--primary);}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .container{max-width:1000px;}
  h1{font-size:40px;}
  h2{font-size:30px;}
  .search-box{width:200px;}
  .search-box:focus-within{width:220px;}
  .hero-grid{gap:40px;}
}
@media (max-width:991px){
  :root{--sec-pad:72px;}
  .container{padding:0 24px;}
  .nav-main,.search-box,.nav-quick{display:none;}
  .nav-toggle{display:flex;}
  .hero{padding:56px 0 68px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-sub{max-width:100%;}
  .card-lg{grid-column:span 12;}
  .card-sm{grid-column:span 6;}
  .card-wide{grid-column:span 12;}
  .metric-grid{grid-template-columns:repeat(2,1fr);}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);gap:32px 0;}
  .step{padding:0 18px;}
  .step:nth-child(2n)::after{display:none;}
  .step:nth-child(2n+1){padding-left:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:767px){
  :root{--sec-pad:56px;}
  body{font-size:16px;line-height:1.8;}
  .container{padding:0 18px;}
  h1{font-size:30px;line-height:1.25;}
  h2{font-size:26px;}
  h3{font-size:19px;}
  .lead,.hero-sub{font-size:16px;}
  .card,.news-body,.card-lg .card-body{padding:22px;}
  .card{padding:22px;}
  .card-lg{padding:0;}
  .card-lg .card-body{padding:22px;}
  .card-sm{grid-column:span 12;}
  .card-wide{flex-direction:column;gap:18px;}
  .card-wide .card-thumb{width:100%;}
  .news-grid{grid-template-columns:1fr;}
  .metric-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;gap:26px;}
  .step{padding:0 !important;}
  .step::after{display:none;}
  .float-card{padding:10px 12px;}
  .float-card strong{font-size:17px;}
  .float-card-a{left:6px;bottom:14px;}
  .float-card-b{right:6px;top:14px;}
  .head-row{flex-direction:column;align-items:flex-start;gap:12px;}
  .cta-panel{padding:24px;flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .faq-q{padding:18px 18px;font-size:15.5px;}
  .faq-a{padding:0 18px 18px;}
  .search-box:focus-within{width:200px;}
}
@media (max-width:479px){
  h1{font-size:27px;}
  .hero-cta .btn,.cta-panel .btn{width:100%;}
  .modal{padding:22px;}
  .metric-value{font-size:34px;}
}

/* roulang page: article */
:root{
  --primary:#1657D6;
  --primary-dark:#0F3E9E;
  --accent:#00B487;
  --warm:#FF7A45;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --soft:#EEF3FD;
  --line:#E4EAF4;
  --field:#D6DFEC;
  --text:#0E1B2E;
  --text-2:#4A5A72;
  --text-3:#8394AC;
  --danger:#D93A3A;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --shadow-sm:0 1px 2px rgba(16,42,86,.05), 0 8px 24px rgba(16,42,86,.06);
  --shadow-lg:0 2px 4px rgba(16,42,86,.06), 0 16px 36px rgba(16,42,86,.10);
  --ease:180ms ease;
  --font:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);background:rgba(16,42,86,.015);}
a{color:var(--primary);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--primary-dark);}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;color:var(--text);}
p{margin:0;}
ul,ol{margin:0;padding:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 32px;
}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(16,42,86,.07);}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:68px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:28px;height:28px;border-radius:8px;
  background:var(--primary);
  display:flex;align-items:center;justify-content:center;
  flex:0 0 auto;
}
.brand-mark svg{width:17px;height:17px;}
.brand-text{font-size:17px;font-weight:400;color:var(--text);letter-spacing:.2px;white-space:nowrap;}
.brand-text strong{font-weight:700;}

.nav-main{display:flex;align-items:center;gap:26px;margin-left:12px;}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--text-2);
  padding:22px 0;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;left:0;right:0;bottom:16px;
  height:2px;border-radius:2px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--ease);
}
.nav-link:hover{color:var(--primary);}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
.nav-link.active{color:var(--primary);font-weight:600;}

.header-right{display:flex;align-items:center;gap:16px;margin-left:auto;}
.command-search{
  position:relative;
  display:flex;align-items:center;gap:8px;
  width:240px;height:40px;
  padding:0 10px 0 12px;
  background:#F2F5FA;
  border:1px solid transparent;
  border-radius:var(--r-btn);
  transition:width var(--ease),border-color var(--ease),background var(--ease),box-shadow var(--ease);
}
.command-search:focus-within{
  width:268px;
  background:var(--surface);
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(22,87,214,.12);
}
.command-search svg{width:16px;height:16px;color:var(--text-3);flex:0 0 auto;}
.command-search input{
  flex:1 1 auto;min-width:0;
  border:0;background:transparent;outline:none;
  font-size:14px;color:var(--text);font-family:inherit;
}
.command-search input::placeholder{color:var(--text-3);}
.kbd{
  flex:0 0 auto;
  font-size:11.5px;color:var(--text-3);
  border:1px solid var(--line);
  background:var(--surface);
  border-radius:6px;
  padding:1px 6px;
  line-height:1.6;
}
.quick-link{font-size:14.5px;color:var(--text-2);white-space:nowrap;}
.quick-link:hover{color:var(--primary);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(22,87,214,.20);}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(15,62,158,.24);}
.btn-ghost{background:var(--surface);color:var(--primary);border-color:var(--primary);}
.btn-ghost:hover{background:var(--soft);color:var(--primary-dark);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}

.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line);
  background:var(--surface);
  border-radius:var(--r-btn);
  cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-2);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text-2);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:var(--surface);
  padding:8px 0 20px;
}
.mobile-drawer.open{display:block;}
.mobile-drawer a.drawer-link{
  display:block;
  font-size:17px;
  color:var(--text);
  line-height:56px;
  padding:0 24px;
  border-bottom:1px solid var(--line);
}
.mobile-drawer a.drawer-link.active{color:var(--primary);font-weight:600;}
.mobile-drawer .drawer-cta{padding:18px 24px 0;}
.mobile-drawer .drawer-cta .btn{width:100%;}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:26px 0 0;}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:var(--text-3);
}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:#C3CDDE;}
.crumb .current{color:var(--text-2);}

/* ---------- 文章头部 ---------- */
.article-head{padding:22px 0 30px;}
.article-badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px;}
.badge{
  display:inline-flex;align-items:center;
  font-size:12.5px;line-height:1;
  padding:6px 12px;
  border-radius:999px;
  border:1px solid rgba(22,87,214,.28);
  background:rgba(22,87,214,.06);
  color:var(--primary-dark);
}
.badge-accent{border-color:rgba(0,180,135,.32);background:rgba(0,180,135,.08);color:#0A7C60;}
.article-head h1{
  font-size:34px;
  line-height:1.3;
  letter-spacing:.2px;
  max-width:980px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:18px;
  font-size:13.5px;
  color:var(--text-3);
}
.article-meta .dot{color:#C3CDDE;}

.cover-figure{margin:0 0 40px;}
.cover-figure img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:var(--r-card);
  box-shadow:none;
}

/* ---------- 阅读区 ---------- */
.reader{
  display:grid;
  grid-template-columns:minmax(0,8fr) minmax(0,4fr);
  gap:48px;
  align-items:start;
  padding-bottom:72px;
}
.post-body{max-width:780px;}
.post-body p{
  font-size:17px;
  line-height:1.9;
  color:var(--text-2);
  margin-bottom:20px;
}
.post-body h2{
  position:relative;
  font-size:26px;
  line-height:1.4;
  margin:44px 0 18px;
  padding-left:14px;
  color:var(--text);
}
.post-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--primary);
}
.post-body h3{font-size:21px;margin:32px 0 14px;color:var(--text);}
.post-body a{color:var(--primary);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;}
.post-body a:hover{color:var(--primary-dark);}
.post-body ul,.post-body ol{margin:0 0 22px 0;padding-left:22px;color:var(--text-2);}
.post-body li{font-size:17px;line-height:1.9;margin-bottom:8px;}
.post-body blockquote{
  margin:24px 0;
  padding:18px 22px;
  background:var(--soft);
  border-left:3px solid var(--primary);
  border-radius:0 var(--r-img) var(--r-img) 0;
  color:var(--text-2);
}
.post-body blockquote p:last-child{margin-bottom:0;}
.post-body img{margin:24px 0 10px;}
.post-body figcaption{font-size:14px;color:var(--text-3);margin-bottom:24px;}
.post-body table{
  width:100%;
  border-collapse:collapse;
  margin:22px 0;
  font-size:15px;
  color:var(--text-2);
  border:1px solid var(--line);
  border-radius:var(--r-img);
  overflow:hidden;
}
.post-body th,.post-body td{padding:12px;border-bottom:1px solid var(--line);text-align:left;}
.post-body th{background:var(--soft);color:var(--text);font-weight:600;}
.post-body tbody tr:nth-child(even){background:#FAFBFE;}

.empty-state{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:56px 32px;
  text-align:center;
  box-shadow:var(--shadow-sm);
}
.empty-state svg{width:40px;height:40px;color:#B8C4D6;margin:0 auto 14px;}
.empty-state p{font-size:14px;color:var(--text-3);margin-bottom:16px;}

/* ---------- 侧栏 ---------- */
.reader-aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.aside-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--shadow-sm);
}
.aside-card h3{font-size:16px;margin-bottom:14px;}
.toc-list{list-style:none;}
.toc-list li{border-bottom:1px dashed var(--line);}
.toc-list li:last-child{border-bottom:0;}
.toc-list a{
  display:block;
  padding:11px 0;
  font-size:14.5px;
  color:var(--text-2);
}
.toc-list a:hover{color:var(--primary);padding-left:4px;}
.aside-note{font-size:13.5px;color:var(--text-3);line-height:1.8;}
.aside-card .btn{width:100%;margin-top:16px;}

/* ---------- 相关推荐 ---------- */
.section{padding:72px 0;}
.section-soft{background:var(--soft);}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:32px;
}
.section-head h2{font-size:30px;}
.section-head .sub{font-size:14.5px;color:var(--text-3);margin-top:8px;}
.text-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--primary);
}
.text-arrow svg{width:16px;height:16px;transition:transform var(--ease);}
.text-arrow:hover svg{transform:translateX(3px);}

.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.news-card{
  display:flex;flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:transform var(--ease),box-shadow var(--ease);
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);}
.news-thumb{position:relative;}
.news-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}
.news-thumb .badge{position:absolute;top:12px;left:12px;background:rgba(255,255,255,.94);border-color:var(--line);color:var(--primary-dark);}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.news-body h3{
  font-size:18px;
  line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body h3 a{color:var(--text);}
.news-body h3 a:hover{color:var(--primary);}
.news-body p{
  font-size:14px;line-height:1.7;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{margin-top:auto;font-size:13px;color:var(--text-3);}

/* ---------- 上下篇 / 返回 ---------- */
.post-nav{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;
  margin-bottom:32px;
}
.post-nav a{
  display:block;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:20px 22px;
  box-shadow:var(--shadow-sm);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.post-nav a:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:rgba(22,87,214,.35);}
.post-nav .label{font-size:13px;color:var(--text-3);display:block;margin-bottom:6px;}
.post-nav .title{font-size:16px;font-weight:600;color:var(--text);line-height:1.5;}
.center-actions{display:flex;justify-content:center;margin-bottom:8px;}

.privacy-line{
  font-size:14px;
  color:var(--text-3);
  padding:22px 0 40px;
}
.privacy-line a{color:var(--primary);}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg);
  border-top:1px solid var(--line);
  padding:64px 0 0;
  font-size:13.5px;
  color:var(--text-3);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:44px;
}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand p{font-size:13.5px;line-height:1.85;color:var(--text-3);max-width:280px;}
.social-row{display:flex;gap:10px;margin-top:18px;}
.social-row a{
  width:34px;height:34px;border-radius:10px;
  border:1px solid var(--line);
  background:var(--surface);
  display:flex;align-items:center;justify-content:center;
  color:var(--text-2);
  transition:border-color var(--ease),color var(--ease),transform var(--ease);
}
.social-row a:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.social-row svg{width:17px;height:17px;}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:16px;}
.footer-col ul{list-style:none;}
.footer-col li{margin-bottom:11px;}
.footer-col a{color:var(--text-3);font-size:13.5px;}
.footer-col a:hover{color:var(--primary);}
.footer-contact li{color:var(--text-3);line-height:1.9;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px 24px;
  align-items:center;justify-content:space-between;
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{max-width:1000px;padding:0 24px;}
  .command-search{width:190px;}
  .command-search:focus-within{width:210px;}
  .nav-main{gap:18px;}
}
@media (max-width:991px){
  .nav-main,.command-search,.quick-link{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{height:60px;}
  .reader{grid-template-columns:minmax(0,1fr);gap:32px;}
  .reader-aside{position:static;order:-1;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .section{padding:72px 0;}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8;}
  .container{padding:0 18px;}
  .article-head h1{font-size:26px;}
  .section-head h2{font-size:26px;}
  .post-body p,.post-body li{font-size:16px;}
  .post-body h2{font-size:22px;}
  .post-body h3{font-size:19px;}
  .section{padding:56px 0;}
  .crumb-bar{padding:18px 0 0;}
  .reader{padding-bottom:48px;}
  .btn{height:42px;}
}
@media (max-width:599px){
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .post-nav{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .article-head .badge{padding:5px 10px;}
}
@media (max-width:479px){
  .header-right .btn-primary{display:none;}
  .center-actions .btn{width:100%;}
}

/* roulang page: category1 */
:root{
  --primary:#1657D6;
  --primary-dark:#0F3E9E;
  --accent:#00B487;
  --warn:#FF7A45;
  --danger:#D93A3A;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --tint:#EEF3FD;
  --soft:#F2F5FA;
  --line:#E4EAF4;
  --line-strong:#D6DFEC;
  --text:#0E1B2E;
  --text-2:#4A5A72;
  --text-3:#8394AC;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(16,42,86,.05), 0 8px 24px rgba(16,42,86,.06);
  --shadow-2:0 2px 4px rgba(16,42,86,.06), 0 16px 36px rgba(16,42,86,.10);
  --container:1240px;
  --nav-h:68px;
  --ease:180ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);background:rgba(131,148,172,.015);}
a{color:var(--primary);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--primary-dark);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section-head{margin-bottom:32px;}
.section-head h2{font-size:34px;line-height:1.28;font-weight:700;letter-spacing:-.2px;}
.section-head p{margin-top:12px;color:var(--text-2);font-size:16px;max-width:760px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;color:var(--primary);background:var(--tint);border:1px solid #DCE6FA;border-radius:var(--r-pill);padding:4px 12px;margin-bottom:16px;}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 4px 18px rgba(16,42,86,.08);}
.nav-inner{display:flex;align-items:center;gap:28px;height:var(--nav-h);}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:28px;height:28px;border-radius:8px;background:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;
}
.brand-mark svg{width:17px;height:17px;}
.brand-text{font-size:17px;color:var(--text);letter-spacing:-.1px;white-space:nowrap;}
.brand-text strong{font-weight:700;}
.nav-main{display:flex;align-items:center;gap:6px;margin-left:4px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:var(--nav-h);
  padding:0 12px;font-size:15px;color:var(--text-2);font-weight:500;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:14px;height:2px;
  background:var(--primary);border-radius:2px;transform:scaleX(0);transform-origin:center;
  transition:transform var(--ease);
}
.nav-link:hover{color:var(--primary);}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
.nav-link.active{color:var(--primary);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:14px;margin-left:auto;}
.command-search{
  display:flex;align-items:center;gap:8px;
  width:240px;height:40px;padding:0 10px;
  background:var(--soft);border:1px solid transparent;border-radius:var(--r-btn);
  transition:width var(--ease),border-color var(--ease),background var(--ease),box-shadow var(--ease);
}
.command-search svg{width:16px;height:16px;color:var(--text-3);flex-shrink:0;}
.command-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px;color:var(--text);
}
.command-search input::placeholder{color:var(--text-3);}
.command-search kbd{
  font-family:inherit;font-size:11.5px;color:var(--text-3);background:#fff;
  border:1px solid var(--line-strong);border-radius:6px;padding:1px 6px;flex-shrink:0;
}
.command-search:focus-within{
  width:268px;background:#fff;border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(22,87,214,.12);
}
.nav-quick{font-size:14.5px;color:var(--text-2);font-weight:500;white-space:nowrap;}
.nav-quick:hover{color:var(--primary);}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-btn);
  align-items:center;justify-content:center;background:var(--soft);border:1px solid var(--line);
}
.nav-toggle svg{width:20px;height:20px;color:var(--text-2);}
.mobile-drawer{
  display:none;position:fixed;inset:var(--nav-h) 0 0 0;background:var(--surface);
  z-index:79;padding:8px 18px 96px;overflow-y:auto;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer .drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;font-size:17px;color:var(--text);border-bottom:1px solid var(--line);
}
.mobile-drawer .drawer-link.active{color:var(--primary);font-weight:600;}
.mobile-drawer .drawer-link svg{width:16px;height:16px;color:var(--primary);}
.drawer-cta{
  position:fixed;left:18px;right:18px;bottom:18px;
}
.drawer-cta .btn{width:100%;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:600;border:1.5px solid transparent;
  transition:background var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(22,87,214,.24);}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--primary);}
.btn-ghost:hover{background:var(--tint);color:var(--primary-dark);}
.btn-sm{height:40px;padding:0 18px;font-size:14.5px;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);
  font-size:15px;font-weight:600;
}
.btn-text svg{width:16px;height:16px;transition:transform var(--ease);}
.btn-text:hover svg{transform:translateX(3px);}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;padding:4px 10px;border-radius:var(--r-pill);
  border:1px solid #DCE6FA;background:var(--tint);color:var(--primary);
}
.badge-green{border-color:#CDEDE4;background:#EBF9F4;color:#0A8C69;}
.tag-line{display:flex;flex-wrap:wrap;gap:10px;}

/* ============ 文档式首屏 ============ */
.doc-hero{
  background:var(--surface);
  border-bottom:1px solid var(--line);
  padding:56px 0 44px;
}
.breadcrumb{font-size:13.5px;color:var(--text-3);display:flex;align-items:center;gap:8px;margin-bottom:18px;flex-wrap:wrap;}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:#C3CEDF;}
.breadcrumb .current{color:var(--text-2);}
.doc-hero h1{
  font-size:46px;line-height:1.18;font-weight:700;letter-spacing:-.6px;max-width:900px;
}
.doc-hero .lede{
  margin-top:18px;font-size:17px;color:var(--text-2);max-width:820px;line-height:1.8;
}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.anchor-bar{
  display:flex;flex-wrap:wrap;gap:10px;
  margin-top:30px;padding-top:26px;border-top:1px solid var(--line);
}
.anchor-bar a{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13.5px;font-weight:500;color:var(--text-2);
  background:var(--soft);border:1px solid var(--line);
  border-radius:var(--r-pill);padding:6px 14px;
  transition:background var(--ease),color var(--ease),border-color var(--ease);
}
.anchor-bar a:hover{background:var(--tint);color:var(--primary);border-color:#DCE6FA;}

/* ============ 文档主体 ============ */
.doc-body{padding:72px 0 24px;}
.doc-grid{display:grid;grid-template-columns:240px 1fr;gap:56px;align-items:start;}
.doc-toc{position:sticky;top:calc(var(--nav-h) + 28px);}
.doc-toc .toc-title{
  font-size:12.5px;font-weight:700;color:var(--text-3);letter-spacing:.08em;
  text-transform:uppercase;margin-bottom:14px;
}
.doc-toc ol{display:flex;flex-direction:column;gap:2px;border-left:2px solid var(--line);}
.doc-toc a{
  display:block;padding:8px 0 8px 14px;font-size:14.5px;color:var(--text-2);
  border-left:2px solid transparent;margin-left:-2px;line-height:1.5;
  transition:color var(--ease),border-color var(--ease),background var(--ease);
}
.doc-toc a:hover{color:var(--primary);}
.doc-toc a.active{color:var(--primary);font-weight:600;border-left-color:var(--primary);}
.toc-help{
  margin-top:22px;padding:18px;border-radius:var(--r-card);
  background:var(--tint);border:1px solid #DCE6FA;
}
.toc-help p{font-size:13.5px;color:var(--text-2);line-height:1.75;margin-bottom:12px;}

.doc-content{max-width:840px;}
.doc-section{padding-bottom:44px;margin-bottom:44px;border-bottom:1px solid var(--line);}
.doc-section:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0;}
.doc-section h2{
  font-size:26px;line-height:1.35;font-weight:700;letter-spacing:-.2px;
  padding-left:14px;position:relative;margin-bottom:20px;
  scroll-margin-top:110px;
}
.doc-section h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  background:var(--primary);border-radius:2px;
}
.doc-section h3{font-size:21px;line-height:1.4;font-weight:600;margin:26px 0 12px;}
.doc-section p{color:var(--text-2);margin-bottom:18px;font-size:16.5px;line-height:1.85;}
.doc-section p strong{color:var(--text);font-weight:600;}
.detail-list{display:flex;flex-direction:column;gap:0;margin:6px 0 20px;}
.detail-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 4px;border-bottom:1px solid var(--line);color:var(--text-2);font-size:16px;line-height:1.8;
}
.detail-list li:last-child{border-bottom:0;}
.detail-list .num{
  flex-shrink:0;width:24px;height:24px;border-radius:50%;background:var(--tint);
  color:var(--primary);font-size:12.5px;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;margin-top:4px;
}
.detail-list .arrow{
  margin-left:auto;flex-shrink:0;color:var(--primary);margin-top:5px;
}
.detail-list .arrow svg{width:16px;height:16px;}
.note-box{
  background:var(--tint);border-left:3px solid var(--primary);border-radius:0 var(--r-card) var(--r-card) 0;
  padding:18px 22px;color:var(--text-2);font-size:15.5px;line-height:1.8;margin:8px 0 22px;
}
.doc-figure{margin:10px 0 26px;}
.doc-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.doc-figure figcaption{font-size:13.5px;color:var(--text-3);margin-top:10px;}

/* 步骤条 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin:10px 0 24px;}
.step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--shadow-1);transition:transform var(--ease),box-shadow var(--ease);
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.step .step-no{
  width:30px;height:30px;border-radius:50%;background:var(--primary);color:#fff;
  font-size:13.5px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;
  margin-bottom:14px;
}
.step h4{font-size:16px;font-weight:600;margin-bottom:8px;}
.step p{font-size:14px;color:var(--text-2);line-height:1.7;margin:0;}

/* 迷你 FAQ */
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-img);
  margin-bottom:12px;overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item:hover{border-color:#D6E2F7;}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;text-align:left;padding:18px 22px;font-size:16px;font-weight:600;color:var(--text);
  position:relative;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;
  background:var(--primary);border-radius:2px;opacity:0;transition:opacity var(--ease);
}
.faq-item.is-open .faq-q{color:var(--primary);}
.faq-item.is-open .faq-q::before{opacity:1;}
.faq-q .chev{flex-shrink:0;width:18px;height:18px;color:var(--text-3);transition:transform var(--ease),color var(--ease);}
.faq-item.is-open .faq-q .chev{transform:rotate(180deg);color:var(--primary);}
.faq-a{display:none;padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--text-2);}
.faq-item.is-open .faq-a{display:block;}

/* CTA 条 */
.cta-bar{
  margin:24px 0 0;background:var(--tint);border:1px solid #DCE6FA;border-radius:var(--r-card);
  padding:32px 36px;display:flex;align-items:center;justify-content:space-between;gap:28px;
}
.cta-bar h3{font-size:22px;font-weight:700;margin-bottom:8px;}
.cta-bar p{font-size:15px;color:var(--text-2);line-height:1.75;}
.cta-bar .btn{flex-shrink:0;}

/* 隐私说明条 */
.privacy-line{
  padding:24px 0 8px;font-size:14px;color:var(--text-3);line-height:1.7;
}
.privacy-line a{text-decoration:underline;text-underline-offset:3px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg);border-top:1px solid var(--line);padding:64px 0 0;margin-top:56px;font-size:13.5px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{color:var(--text-2);line-height:1.75;max-width:300px;}
.social-row{display:flex;gap:10px;margin-top:18px;}
.social-row a{
  width:36px;height:36px;border-radius:var(--r-btn);background:#fff;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--text-2);
  transition:color var(--ease),border-color var(--ease),transform var(--ease);
}
.social-row a:hover{color:var(--primary);border-color:#C9D8F5;transform:translateY(-2px);}
.social-row svg{width:17px;height:17px;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{color:var(--text-2);}
.footer-col a:hover{color:var(--primary);}
.footer-col .contact-item{color:var(--text-2);line-height:1.7;}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  color:var(--text-3);
}
.footer-bottom .fb-links{display:flex;gap:20px;flex-wrap:wrap;}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary);}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .container{padding:0 24px;max-width:1000px;}
  .command-search{width:200px;}
  .command-search:focus-within{width:220px;}
  .doc-grid{grid-template-columns:200px 1fr;gap:36px;}
  .doc-hero h1{font-size:40px;}
}
@media (max-width:991px){
  .nav-main,.command-search,.nav-quick{display:none;}
  .nav-toggle{display:inline-flex;}
  .section{padding:72px 0;}
  .doc-body{padding:56px 0 20px;}
  .doc-grid{grid-template-columns:1fr;gap:28px;}
  .doc-toc{position:static;border:1px solid var(--line);border-radius:var(--r-card);background:#fff;padding:20px;box-shadow:var(--shadow-1);}
  .doc-toc ol{border-left:0;flex-direction:row;flex-wrap:wrap;gap:8px;}
  .doc-toc a{border-left:0;padding:6px 12px;background:var(--soft);border-radius:var(--r-pill);font-size:13.5px;}
  .doc-toc a.active{background:var(--tint);border-left:0;}
  .toc-help{display:none;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .doc-hero h1{font-size:34px;}
  .cta-bar{flex-direction:column;align-items:flex-start;}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8;}
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .site-header .nav-inner{gap:12px;height:60px;}
  .mobile-drawer{inset:60px 0 0 0;}
  .brand-text{font-size:16px;}
  .doc-hero{padding:36px 0 32px;}
  .doc-hero h1{font-size:30px;}
  .doc-hero .lede{font-size:16px;}
  .section-head h2{font-size:26px;}
  .doc-section h2{font-size:22px;padding-left:12px;}
  .doc-section h3{font-size:19px;}
  .doc-section p{font-size:16px;}
  .detail-list li{font-size:15.5px;}
  .steps{grid-template-columns:1fr;}
  .cta-bar{padding:26px 22px;}
  .cta-bar h3{font-size:19px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .shadow-reduce{box-shadow:var(--shadow-1);}
}
@media (max-width:479px){
  .btn{width:100%;}
  .cta-bar .btn{width:100%;}
  .hero-meta{flex-direction:column;align-items:flex-start;}
  .step{padding:20px;}
}

/* roulang page: category2 */
:root{
  --blue:#1657D6;
  --blue-dark:#0F3E9E;
  --teal:#00B487;
  --orange:#FF7A45;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --block:#EEF3FD;
  --line:#E4EAF4;
  --line-strong:#D6DFEC;
  --text:#0E1B2E;
  --text-2:#4A5A72;
  --text-3:#8394AC;
  --red:#D93A3A;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow-1:0 1px 2px rgba(16,42,86,.05), 0 8px 24px rgba(16,42,86,.06);
  --shadow-2:0 2px 4px rgba(16,42,86,.06), 0 16px 36px rgba(16,42,86,.10);
  --shadow-soft:0 1px 2px rgba(16,42,86,.05);
  --ease:180ms ease;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;background:#EFF3F9;}
a{color:var(--blue);text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.32;color:var(--text);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:6px;}

/* ---------- 容器 ---------- */
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:70;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.scrolled{box-shadow:0 6px 20px rgba(16,42,86,.08);}
.header-inner{display:flex;align-items:center;gap:20px;height:68px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);text-decoration:none;font-size:17px;white-space:nowrap;}
.brand-mark{
  width:28px;height:28px;border-radius:8px;background:var(--blue);
  display:grid;place-items:center;flex:none;
}
.brand-mark svg{width:18px;height:18px;}
.brand-text strong{font-weight:700;}
.brand-text{font-weight:400;}
.nav-main{display:flex;align-items:center;gap:2px;margin-left:6px;}
.nav-link{
  position:relative;display:inline-block;
  padding:22px 12px;font-size:15px;color:var(--text-2);
  transition:color var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:13px;height:2px;
  background:var(--blue);border-radius:2px;transform:scaleX(0);
  transition:transform var(--ease);
}
.nav-link:hover{color:var(--blue);}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
.nav-link.active{color:var(--blue);font-weight:600;}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:14px;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:240px;height:40px;padding:0 10px;
  background:#F2F5FA;border:1px solid transparent;border-radius:var(--radius-btn);
  transition:width var(--ease),border-color var(--ease),background var(--ease),box-shadow var(--ease);
}
.nav-search:focus-within{
  width:262px;background:#fff;border-color:var(--blue);
  box-shadow:0 0 0 3px rgba(22,87,214,.12);
}
.nav-search svg{width:16px;height:16px;color:var(--text-3);flex:none;}
.nav-search input{
  width:100%;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--text);
}
.nav-search input::placeholder{color:var(--text-3);}
.kbd{
  flex:none;font-size:11.5px;line-height:1.6;color:var(--text-3);
  background:#fff;border:1px solid var(--line);border-radius:6px;padding:1px 6px;
}
.nav-quick{font-size:14px;color:var(--text-2);transition:color var(--ease);}
.nav-quick:hover{color:var(--blue);}
.nav-toggle{
  display:none;width:40px;height:40px;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-btn);
  color:var(--text-2);cursor:pointer;transition:border-color var(--ease),color var(--ease);
}
.nav-toggle:hover{border-color:var(--blue);color:var(--blue);}
.nav-toggle svg{width:20px;height:20px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;font-size:15px;font-weight:500;
  border-radius:var(--radius-btn);border:1.5px solid transparent;
  cursor:pointer;text-decoration:none;white-space:nowrap;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-primary{background:var(--blue);color:#fff;box-shadow:var(--shadow-soft);}
.btn-primary:hover{background:var(--blue-dark);transform:translateY(-1px);box-shadow:var(--shadow-1);}
.btn-ghost{background:#fff;color:var(--blue);border-color:var(--blue);}
.btn-ghost:hover{background:var(--block);}
.btn:active{transform:translateY(0);}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:500;color:var(--blue);
}
.link-arrow svg{width:16px;height:16px;transition:transform var(--ease);}
.link-arrow:hover svg{transform:translateX(3px);}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;
  font-size:12.5px;line-height:1.6;padding:3px 10px;border-radius:999px;
  border:1px solid transparent;
}
.badge-blue{color:var(--blue);background:rgba(22,87,214,.07);border-color:rgba(22,87,214,.22);}
.badge-teal{color:#04836A;background:rgba(0,180,135,.09);border-color:rgba(0,180,135,.26);}

/* ---------- 首屏 ---------- */
.page-hero{
  background:var(--block);
  border-bottom:1px solid var(--line);
  padding:56px 0 64px;
}
.hero-grid{display:grid;grid-template-columns:1.32fr .95fr;gap:48px;align-items:center;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);margin-bottom:18px;}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--blue);}
.crumb-current{color:var(--text-2);}
.hero-copy h1{
  font-size:46px;line-height:1.18;font-weight:700;letter-spacing:-.5px;
  margin:16px 0 18px;max-width:16em;
}
.hero-sub{font-size:17.5px;color:var(--text-2);max-width:34em;}
.hero-actions{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap;}
.hero-meta{display:flex;gap:10px;margin-top:26px;flex-wrap:wrap;}
.hero-meta li{
  font-size:12.5px;color:var(--text-2);
  border:1px solid var(--line-strong);background:#fff;
  padding:4px 12px;border-radius:999px;
}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:20px;box-shadow:var(--shadow-1);
  border:1px solid rgba(255,255,255,.7);
}
.float-card{
  position:absolute;left:-18px;bottom:26px;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--shadow-1);padding:12px 16px;min-width:160px;
}
.float-label{display:block;font-size:12px;color:var(--text-3);line-height:1.7;}
.float-card strong{font-size:16px;font-weight:600;color:var(--text);}

/* ---------- 区块 ---------- */
.section{padding:96px 0;}
.section-alt{background:var(--block);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:720px;margin-bottom:36px;}
.section-head h2{font-size:34px;line-height:1.28;font-weight:600;}
.section-head p{margin-top:12px;font-size:16.5px;color:var(--text-2);}
.eyebrow{display:inline-block;font-size:12.5px;letter-spacing:.08em;color:var(--blue);font-weight:600;margin-bottom:12px;}

/* ---------- 卡片网格 ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  display:flex;flex-direction:column;gap:14px;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D9E3F4;}
.card h3{font-size:22px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card p{font-size:15.5px;color:var(--text-2);}
.card-media{
  border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);
}
.card-media img{width:100%;height:236px;object-fit:cover;}
.card-media.small img{height:158px;}
.icon-box{
  width:44px;height:44px;border-radius:12px;background:var(--block);
  display:grid;place-items:center;color:var(--blue);flex:none;
}
.icon-box svg{width:24px;height:24px;}
.card-foot{margin-top:auto;padding-top:6px;}
.m-wide{grid-column:span 7;}
.m-side{grid-column:span 5;}
.m-4{grid-column:span 4;}
.m-8{grid-column:span 8;}
.m-5{grid-column:span 5;}
.m-7{grid-column:span 7;}
.tick-list{display:flex;flex-direction:column;gap:10px;}
.tick-list li{
  position:relative;padding-left:24px;font-size:15px;color:var(--text-2);line-height:1.7;
}
.tick-list li::before{
  content:"✓";position:absolute;left:0;top:0;
  color:var(--teal);font-size:14px;font-weight:700;
}
.step-list{display:flex;flex-direction:column;gap:16px;}
.step-list li{display:flex;gap:14px;align-items:flex-start;}
.step-num{
  flex:none;width:26px;height:26px;border-radius:999px;
  background:var(--block);color:var(--blue);font-size:13px;font-weight:600;
  display:grid;place-items:center;margin-top:3px;
}
.step-list strong{display:block;font-size:15.5px;font-weight:600;color:var(--text);}
.step-list span{font-size:14.5px;color:var(--text-2);line-height:1.7;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  border-left-width:1px;overflow:hidden;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item:hover{box-shadow:var(--shadow-1);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;font-size:17px;font-weight:600;color:var(--text);
  transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";flex:none;width:10px;height:10px;margin-right:2px;
  border-right:2px solid var(--text-3);border-bottom:2px solid var(--text-3);
  transform:rotate(45deg);transition:transform var(--ease),border-color var(--ease);
}
.faq-item[open]{border-left:2px solid var(--blue);}
.faq-item[open] summary{color:var(--blue);}
.faq-item[open] summary::after{border-color:var(--blue);transform:rotate(-135deg);}
.faq-answer{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--text-2);}

/* ---------- CTA 条 ---------- */
.cta-bar{
  background:var(--block);border:1px solid #DCE6F8;border-radius:var(--radius-card);
  padding:30px 34px;display:flex;align-items:center;justify-content:space-between;gap:28px;
}
.cta-bar .cta-title{font-size:22px;font-weight:600;color:var(--text);}
.cta-bar p{margin-top:6px;font-size:15px;color:var(--text-2);}
.cta-actions{flex:none;display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 隐私说明条 ---------- */
.privacy-note{
  padding:26px 0 6px;font-size:14px;color:var(--text-3);
  display:flex;gap:10px;flex-wrap:wrap;align-items:baseline;
}
.privacy-note a{color:var(--text-2);text-decoration:underline;text-decoration-color:var(--line-strong);text-underline-offset:3px;}
.privacy-note a:hover{color:var(--blue);}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg);border-top:1px solid var(--line);
  padding:64px 0 0;font-size:13.5px;color:var(--text-2);
}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:44px;}
.footer-brand .brand{font-size:16px;}
.footer-brand p{margin:14px 0 18px;max-width:22em;color:var(--text-3);line-height:1.8;}
.social-row{display:flex;gap:10px;}
.social-row a{
  width:34px;height:34px;border:1px solid var(--line);border-radius:10px;
  background:#fff;display:grid;place-items:center;color:var(--text-2);
  transition:color var(--ease),border-color var(--ease),transform var(--ease);
}
.social-row a:hover{color:var(--blue);border-color:var(--blue);transform:translateY(-2px);}
.social-row svg{width:16px;height:16px;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{color:var(--text-2);transition:color var(--ease);}
.footer-col a:hover{color:var(--blue);}
.footer-contact li{color:var(--text-2);line-height:1.75;}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 34px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--blue);}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;left:0;right:0;top:60px;bottom:0;z-index:65;
  background:#fff;display:none;flex-direction:column;
  padding:6px 18px 0;overflow-y:auto;
}
.drawer.open{display:flex;}
.drawer-link{
  font-size:17px;line-height:56px;color:var(--text);
  border-bottom:1px solid var(--line);display:block;
}
.drawer-link.active{color:var(--blue);font-weight:600;}
.drawer-foot{margin-top:auto;padding:18px 0 30px;display:flex;flex-direction:column;gap:12px;}
.drawer-foot .btn{width:100%;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{max-width:1000px;}
  .hero-copy h1{font-size:40px;}
  .nav-search{width:200px;}
  .nav-search:focus-within{width:220px;}
}
@media (max-width:991px){
  body{font-size:16px;}
  .header-inner{height:60px;}
  .nav-main,.nav-search,.nav-quick{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-right .btn{display:none;}
  .drawer{top:60px;}
  .page-hero{padding:44px 0 52px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-copy h1{font-size:34px;}
  .float-card{left:16px;bottom:16px;}
  .section{padding:72px 0;}
  .section-head h2{font-size:28px;}
  .m-wide,.m-side,.m-4,.m-8,.m-5,.m-7{grid-column:span 12;}
  .flow-grid{grid-template-columns:repeat(6,1fr);}
  .m-half{grid-column:span 3;}
  .cta-bar{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .hero-copy h1{font-size:30px;margin:14px 0 14px;}
  .hero-sub{font-size:16px;}
  .section{padding:56px 0;}
  .section-head h2{font-size:26px;}
  .card{padding:22px;box-shadow:var(--shadow-soft);}
  .card h3{font-size:19px;}
  .card:hover{transform:none;box-shadow:var(--shadow-soft);}
  .card-media img{height:190px;}
  .flow-grid{grid-template-columns:1fr;gap:18px;}
  .m-half{grid-column:span 1;}
  .faq-item summary{font-size:16px;padding:18px 18px;}
  .faq-answer{padding:0 18px 18px;}
  .cta-bar{padding:24px 22px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:34px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:479px){
  .hero-copy h1{font-size:27px;}
  .hero-actions .btn,.cta-actions .btn{width:100%;}
  .cta-actions{width:100%;}
  .float-card{position:static;margin-top:14px;display:inline-block;}
}