/* roulang page: index */
:root{
  --brand:#1A5FFF;
  --brand-dark:#0B3FCC;
  --brand-light:#EDF3FF;
  --brand-border:#D6E3FF;
  --mint:#12D8A0;
  --mint-dark:#0B9C76;
  --orange:#FF8A3D;
  --ink:#0F1B2D;
  --ink-2:#4A5B73;
  --ink-3:#7D8DA5;
  --text-body:#23303F;
  --line:#E4EBF6;
  --divider:#EEF2F9;
  --bg-alt:#F6F9FE;
  --radius:16px;
  --radius-sm:12px;
  --card-shadow:0 2px 4px rgba(15,42,90,.04),0 16px 40px -20px rgba(15,42,90,.18);
  --card-shadow-hover:0 4px 8px rgba(15,42,90,.06),0 24px 48px -20px rgba(15,42,90,.24);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans CJK SC",Inter,system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text-body);
  background:#FFFFFF;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
section[id]{scroll-margin-top:92px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 32px;}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.85);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom:1px solid #E8EEF7;
}
.header-inner{display:flex;align-items:center;gap:20px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:32px;height:32px;border-radius:9px;flex-shrink:0;
  background:linear-gradient(135deg,#1A5FFF,#0B3FCC);
  color:#fff;font-weight:800;font-size:15px;
  display:grid;place-items:center;
}
.brand-name{display:flex;flex-direction:column;line-height:1.15;}
.brand-strong{font-size:15px;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
.brand-sub{font-size:11px;color:var(--ink-3);letter-spacing:.06em;}
.nav-main{display:none;align-items:center;gap:28px;margin-left:12px;}
@media (min-width:1024px){.nav-main{display:flex;}}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-2);
  padding:6px 0;transition:color .2s var(--ease);
}
.nav-link:hover{color:var(--brand);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--brand);border-radius:2px;
}
.header-tools{margin-left:auto;display:none;align-items:center;gap:12px;}
@media (min-width:1024px){.header-tools{display:flex;}}

/* ---------- Search ---------- */
.search-wrap{position:relative;display:flex;align-items:center;}
.search-wrap .fa-magnifying-glass{position:absolute;left:13px;font-size:13px;color:var(--ink-3);pointer-events:none;}
.search-wrap input{
  width:220px;height:38px;border:1px solid var(--line);background:#F4F7FC;
  border-radius:var(--radius-sm);padding:0 48px 0 34px;font-size:14px;outline:none;
  transition:width .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.search-wrap input::placeholder{color:var(--ink-3);}
.search-wrap input:focus{
  width:320px;background:#fff;border-color:var(--brand-border);
  box-shadow:0 0 0 3px rgba(26,95,255,.18);
}
.search-wrap kbd{
  position:absolute;right:10px;font-family:inherit;font-size:11px;
  color:var(--ink-3);background:#E9EEF7;border-radius:6px;padding:2px 6px;
}
.search-panel{
  position:absolute;top:calc(100% + 10px);left:0;width:320px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--card-shadow);padding:10px;
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
}
.search-wrap:focus-within .search-panel{opacity:1;visibility:visible;transform:translateY(0);}
.search-panel .panel-title{margin:6px 8px;font-size:12px;letter-spacing:.06em;color:var(--ink-3);}
.search-panel a{display:block;font-size:14px;color:var(--ink-2);padding:8px 10px;border-radius:10px;transition:background .2s var(--ease),color .2s var(--ease);}
.search-panel a:hover{background:var(--brand-light);color:var(--brand);}

/* ---------- Buttons ---------- */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;
  padding:12px 22px;border:1px solid transparent;border-radius:var(--radius-sm);
  cursor:pointer;transition:background .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.btn-primary:hover{background:var(--brand-dark);box-shadow:0 12px 26px -14px rgba(11,63,204,.85);}
.btn-primary:active{transform:scale(.98);}
.btn-primary:disabled{background:#B9C7DE;box-shadow:none;cursor:not-allowed;}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-secondary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--brand);font-size:15px;font-weight:600;
  padding:12px 22px;border:1px solid #D8E2F2;border-radius:var(--radius-sm);
  cursor:pointer;transition:background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn-secondary:hover{background:#F4F8FF;border-color:var(--brand);}
.btn-secondary:active{transform:scale(.98);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;
  color:var(--ink-2);padding:9px 14px;border-radius:var(--radius-sm);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.btn-ghost:hover{background:var(--brand-light);color:var(--brand);}
.btn-primary:focus-visible,.btn-secondary:focus-visible,.btn-ghost:focus-visible,
.nav-link:focus-visible,.link-arrow:focus-visible,.news-card:focus-visible{
  outline:none;box-shadow:0 0 0 3px rgba(26,95,255,.28);
}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:14px;font-weight:600;
  transition:color .2s var(--ease);
}
.link-arrow i{transition:transform .2s var(--ease);}
.link-arrow:hover{color:var(--brand-dark);}
.link-arrow:hover i{transform:translateX(2px);}

/* ---------- Mobile nav ---------- */
.nav-toggle{
  margin-left:auto;width:44px;height:44px;flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  font-size:16px;color:var(--ink);cursor:pointer;
}
@media (min-width:1024px){.nav-toggle{display:none;}}
.mobile-drawer{display:none;flex-direction:column;background:#fff;border-top:1px solid var(--line);padding:8px 20px 24px;}
.mobile-drawer.is-open{display:flex;}
.mobile-drawer a{
  display:flex;align-items:center;min-height:48px;
  font-size:16px;color:var(--ink-2);border-bottom:1px solid var(--divider);
  transition:color .2s var(--ease);
}
.mobile-drawer a:hover{color:var(--brand);}
.mobile-drawer .drawer-cta{
  margin-top:16px;border-bottom:none;background:var(--brand);color:#fff;
  justify-content:center;font-weight:600;border-radius:var(--radius-sm);
}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:56px 0 40px;}
@media (min-width:1024px){.hero{padding:84px 0 60px;}}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(circle,rgba(26,95,255,.14) 1px,transparent 1px);
  background-size:16px 16px;
  -webkit-mask-image:linear-gradient(to bottom,#000,transparent 72%);
  mask-image:linear-gradient(to bottom,#000,transparent 72%);
}
.hero > .container{position:relative;z-index:2;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.08em;
  color:var(--brand);background:var(--brand-light);
  border:1px solid var(--brand-border);border-radius:999px;padding:5px 12px;
}
h1{font-size:clamp(30px,4.2vw,50px);font-weight:800;line-height:1.22;letter-spacing:-.01em;margin-top:20px;}
.hero-sub{font-size:17px;color:var(--ink-2);margin-top:16px;max-width:520px;line-height:1.8;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.hero-tags li{
  font-size:13px;color:var(--ink-2);background:#F4F7FC;
  border:1px solid var(--line);border-radius:8px;padding:5px 10px;line-height:1.5;
}
.hero-visual{position:relative;}
.hero-visual img{
  position:relative;z-index:2;width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius);border:1px solid var(--line);
}
.hero-visual::before{
  content:"";position:absolute;inset:0;z-index:1;
  transform:translate(-8px,8px);
  background:var(--brand-light);border-radius:var(--radius);
}
.hero-visual::after{
  content:"";position:absolute;right:-14px;bottom:-14px;width:96px;height:96px;z-index:1;
  background-image:radial-gradient(circle,rgba(26,95,255,.28) 1px,transparent 1px);
  background-size:12px 12px;opacity:.7;
}

/* ---------- Trust bar ---------- */
.trust-bar{
  display:grid;grid-template-columns:repeat(2,1fr);
  margin-top:48px;border-top:1px solid var(--line);
}
@media (min-width:768px){.trust-bar{grid-template-columns:repeat(4,1fr);}}
.trust-bar li{padding:18px 16px 6px;}
.trust-bar li + li{border-left:1px solid var(--line);}
@media (max-width:767px){
  .trust-bar li:nth-child(3){border-left:none;}
  .trust-bar li:nth-child(3),.trust-bar li:nth-child(4){border-top:1px solid var(--line);}
}
.trust-bar h3{font-size:15px;font-weight:600;margin-bottom:4px;}
.trust-bar p{font-size:13px;color:var(--ink-3);line-height:1.65;}

/* ---------- Sections ---------- */
.section{padding:56px 0;}
@media (min-width:768px){.section{padding:72px 0;}}
@media (min-width:1024px){.section{padding:96px 0;}}
.section-alt{background:var(--bg-alt);}
.section-head{margin-bottom:32px;}
.section-head h2{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.3;letter-spacing:-.01em;}
.section-head p{margin-top:12px;font-size:15px;color:var(--ink-2);max-width:680px;line-height:1.8;}

/* ---------- Steps ---------- */
.step-card{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--card-shadow);padding:28px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--card-shadow-hover);}
.step-card::after{
  content:"";position:absolute;top:20px;right:20px;
  width:8px;height:8px;border-radius:50%;background:var(--mint);
}
.step-card-lg{display:flex;flex-direction:column;min-height:300px;}
.step-no{font-size:56px;font-weight:800;line-height:1;letter-spacing:-.02em;color:rgba(26,95,255,.16);}
.step-card h3{font-size:19px;font-weight:700;margin:16px 0 10px;}
.step-card p{font-size:15px;color:var(--ink-2);line-height:1.8;margin-bottom:20px;max-width:520px;}
.step-link{margin-top:auto;}
.step-row{display:flex;gap:20px;align-items:flex-start;min-height:140px;}
.step-row .step-no{font-size:40px;flex-shrink:0;}
.step-row h3{margin-top:2px;}

/* ---------- Cases ---------- */
.badge{
  display:inline-flex;align-items:center;font-size:12px;font-weight:600;
  color:var(--brand);background:var(--brand-light);
  border:1px solid var(--brand-border);border-radius:6px;padding:3px 8px;
}
.case-main{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--card-shadow);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.case-main:hover{transform:translateY(-2px);box-shadow:var(--card-shadow-hover);}
.case-main img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.case-body{padding:24px;display:flex;flex-direction:column;flex:1;}
.case-body h3{font-size:19px;font-weight:700;margin:12px 0 8px;}
.case-body p{font-size:15px;color:var(--ink-2);line-height:1.8;margin-bottom:18px;}
.mini-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:auto;}
.mini-grid li{background:var(--bg-alt);border-radius:10px;padding:10px 12px;}
.mini-grid strong{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:2px;}
.mini-grid span{font-size:12px;color:var(--ink-3);line-height:1.5;}
.case-quote{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--card-shadow);padding:24px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.case-quote:hover{transform:translateY(-2px);box-shadow:var(--card-shadow-hover);}
.case-quote-top{display:flex;gap:14px;align-items:flex-start;}
.case-quote-top img{width:64px;height:64px;border-radius:12px;object-fit:cover;flex-shrink:0;border:1px solid var(--line);}
.case-quote p{font-size:15px;color:var(--ink-2);line-height:1.8;}
.case-quote footer{margin-top:16px;font-size:13px;color:var(--ink-3);}

/* ---------- News ---------- */
.news-card{
  display:flex;flex-direction:column;height:100%;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--card-shadow);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--card-shadow-hover);}
.news-thumb{position:relative;overflow:hidden;background:var(--bg-alt);}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-thumb .badge{
  position:absolute;left:12px;top:12px;background:rgba(255,255,255,.92);
  border-color:rgba(214,227,255,.9);
}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.news-body h3{
  font-size:17px;font-weight:600;line-height:1.55;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s var(--ease);
}
.news-card:hover h3{color:var(--brand);}
.news-body > p{
  font-size:15px;color:var(--ink-2);line-height:1.75;margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;display:flex;align-items:center;gap:8px;
  padding-top:14px;border-top:1px solid var(--divider);
  font-size:13px;color:var(--ink-3);
}
.news-meta .arrow{margin-left:auto;color:var(--brand);}
.empty-card{
  border:1px dashed #C9D8F2;background:#FBFDFF;border-radius:var(--radius);
  padding:56px 24px;text-align:center;
}
.empty-card i{font-size:32px;color:#B9C7DE;}
.empty-card p{margin-top:16px;font-size:15px;color:var(--ink-2);}
.empty-card span{display:block;margin-top:6px;font-size:13px;color:var(--ink-3);}

/* ---------- FAQ ---------- */
.faq-intro h2{font-size:clamp(24px,3vw,34px);line-height:1.3;}
.faq-intro p{margin:14px 0 20px;font-size:15px;color:var(--ink-2);line-height:1.8;}
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:#fff;border:1px solid #E6EDF8;border-radius:var(--radius);
  padding:18px 20px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item:hover{border-color:rgba(26,95,255,.3);}
.faq-item[open]{border-left:3px solid var(--brand);box-shadow:var(--card-shadow);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  list-style:none;cursor:pointer;font-size:16px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";flex:0 0 auto;width:16px;height:16px;
  background-image:linear-gradient(var(--brand),var(--brand)),linear-gradient(var(--brand),var(--brand));
  background-size:16px 2px,2px 16px;
  background-position:center,center;
  background-repeat:no-repeat;
  transition:background-size .2s var(--ease);
}
.faq-item[open] summary::after{background-size:16px 2px,2px 0px;}
.faq-body{margin-top:12px;font-size:15px;line-height:1.85;color:#5A6B85;}

/* ---------- CTA ---------- */
.cta-section{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#EDF3FF 0%,#E9FBF5 100%);
}
.cta-section::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.45;
  background-image:radial-gradient(circle,rgba(26,95,255,.14) 1px,transparent 1px);
  background-size:16px 16px;
}
.cta-section .container{position:relative;z-index:2;}
.cta-points{display:grid;gap:16px;margin-top:24px;}
.cta-points li{display:flex;gap:12px;}
.cta-points .dot{
  flex:0 0 auto;width:22px;height:22px;margin-top:4px;border-radius:50%;
  background:rgba(18,216,160,.18);color:var(--mint-dark);
  display:grid;place-items:center;font-size:11px;
}
.cta-points strong{display:block;font-size:16px;font-weight:600;color:var(--ink);}
.cta-points span{font-size:13px;color:var(--ink-3);line-height:1.7;}
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:0 24px 60px -32px rgba(15,42,90,.4);
  padding:24px;
}
@media (min-width:768px){.form-card{padding:32px;}}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;height:48px;border:1px solid #DCE5F2;border-radius:var(--radius-sm);
  padding:0 16px;font-size:15px;background:#fff;outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:104px;padding:12px 16px;resize:vertical;line-height:1.7;}
.field input:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(26,95,255,.28);}
.form-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:8px;}
.form-note{font-size:12px;color:var(--ink-3);line-height:1.6;}
@media (max-width:639px){
  .form-foot{flex-direction:column;align-items:stretch;}
  .form-foot .btn-primary{width:100%;}
}
.form-success{padding:26px 8px;text-align:center;}
.form-success .icon{
  width:56px;height:56px;margin:0 auto 16px;border-radius:50%;
  background:rgba(18,216,160,.16);color:var(--mint-dark);
  display:grid;place-items:center;font-size:22px;
}
.form-success p{font-size:16px;font-weight:600;color:var(--ink);}
.form-success span{display:block;margin-top:8px;font-size:13px;color:var(--ink-3);}
.form-success a{display:inline-block;margin-top:16px;font-size:14px;font-weight:600;color:var(--brand);}

/* ---------- Footer ---------- */
.site-footer{background:#F5F8FD;border-top:1px solid var(--line);padding:64px 0 28px;}
.site-footer h4{font-size:15px;font-weight:700;margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--ink-2);line-height:1.8;margin:16px 0;}
.social{display:flex;gap:10px;}
.social a{
  width:38px;height:38px;border-radius:var(--radius-sm);background:#fff;
  border:1px solid var(--line);display:grid;place-items:center;
  color:var(--ink-2);transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.social a:hover{color:var(--brand);border-color:var(--brand-border);transform:translateY(-2px);}
.footer-links{display:grid;gap:10px;}
.footer-links a{font-size:14px;color:#5A6B85;transition:color .2s var(--ease);}
.footer-links a:hover{color:var(--brand);}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:12px;color:var(--ink-3);
}

/* roulang page: article */
:root{
  --primary:#1A5FFF;
  --primary-dark:#0B3FCC;
  --primary-soft:#EDF3FF;
  --primary-border:#D6E3FF;
  --mint:#12D8A0;
  --orange:#FF8A3D;
  --bg:#FFFFFF;
  --bg-alt:#F6F9FE;
  --card:#FFFFFF;
  --text:#0F1B2D;
  --text-body:#23303F;
  --text-2:#4A5B73;
  --text-3:#7D8DA5;
  --border:#E4EBF6;
  --line:#EEF2F9;
  --radius-lg:16px;
  --radius-md:12px;
  --shadow-card:0 2px 4px rgba(15,42,90,.04),0 16px 40px -20px rgba(15,42,90,.18);
  --shadow-hover:0 4px 8px rgba(15,42,90,.06),0 24px 48px -20px rgba(15,42,90,.24);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans CJK SC",Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text-body);
  background:var(--bg);
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
::selection{background:rgba(26,95,255,.16)}
.container-x{max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container-x{padding:0 32px}}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.88);
  backdrop-filter:saturate(180%) blur(12px);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid #E8EEF7;
}
.header-inner{max-width:1200px;margin:0 auto;padding:0 20px;height:68px;display:flex;align-items:center;gap:22px}
@media(min-width:768px){.header-inner{padding:0 32px}}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:32px;height:32px;border-radius:9px;flex-shrink:0;
  background:linear-gradient(135deg,#1A5FFF,#3E86FF);
  color:#fff;font-size:16px;font-weight:800;display:flex;align-items:center;justify-content:center;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:15px;font-weight:700;color:var(--text);letter-spacing:-.01em;white-space:nowrap}
.brand-sub{font-size:11px;color:var(--text-3);letter-spacing:.02em}
.nav-main{display:none;align-items:center;gap:28px;margin-left:10px}
@media(min-width:1024px){.nav-main{display:flex}}
.nav-link{position:relative;font-size:15px;font-weight:500;color:#3C4C63;padding:6px 0;transition:color .2s var(--ease)}
.nav-link:hover{color:var(--primary)}
.nav-link.is-active{color:var(--primary);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;background:var(--primary)}
.header-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.cmd-search{
  position:relative;display:none;align-items:center;gap:8px;
  width:220px;height:40px;padding:0 12px;
  background:#F4F7FC;border:1px solid var(--border);border-radius:var(--radius-md);
  transition:width .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
@media(min-width:1024px){.cmd-search{display:flex}}
.cmd-search:focus-within{width:320px;background:#fff;border-color:var(--primary);box-shadow:0 0 0 3px rgba(26,95,255,.18)}
.cmd-search input{border:0;background:transparent;outline:0;width:100%;font-size:14px;color:var(--text)}
.cmd-search input::placeholder{color:#93A2B8}
.cmd-search kbd{font-size:11px;color:var(--text-3);background:#E9EFF9;border-radius:6px;padding:2px 6px;line-height:1.5;white-space:nowrap}
.cmd-panel{
  position:absolute;top:calc(100% + 10px);left:0;right:0;
  background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow-hover);
  padding:12px;opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
}
.cmd-search:focus-within .cmd-panel{opacity:1;visibility:visible;transform:translateY(0)}
.cmd-group{font-size:12px;color:var(--text-3);letter-spacing:.02em;padding:4px 8px 6px}
.cmd-item{display:block;font-size:13px;color:var(--text-2);padding:8px;border-radius:9px;transition:background .18s var(--ease),color .18s var(--ease)}
.cmd-item:hover{background:var(--primary-soft);color:var(--primary)}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  background:var(--primary);color:#fff;font-size:15px;font-weight:600;
  padding:11px 22px;border-radius:var(--radius-md);border:1px solid transparent;
  transition:background .2s var(--ease),box-shadow .2s var(--ease),transform .12s var(--ease);
  cursor:pointer;white-space:nowrap;
}
.btn-primary:hover{background:var(--primary-dark);box-shadow:0 10px 24px -12px rgba(11,63,204,.7)}
.btn-primary:active{transform:scale(.98)}
.btn-primary:focus-visible{outline:0;box-shadow:0 0 0 3px rgba(26,95,255,.28)}
.btn-secondary{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  background:#fff;color:var(--primary);font-size:15px;font-weight:600;
  padding:11px 22px;border-radius:var(--radius-md);border:1px solid #D8E2F2;
  transition:background .2s var(--ease),border-color .2s var(--ease),transform .12s var(--ease);
  cursor:pointer;white-space:nowrap;
}
.btn-secondary:hover{background:#F4F8FF;border-color:var(--primary)}
.btn-secondary:active{transform:scale(.98)}
.btn-secondary:focus-visible{outline:0;box-shadow:0 0 0 3px rgba(26,95,255,.28)}
.ghost-btn{
  display:none;font-size:14px;font-weight:500;color:var(--text-2);
  padding:9px 14px;border-radius:var(--radius-md);border:1px solid transparent;
  transition:color .2s var(--ease),background .2s var(--ease);
}
@media(min-width:1024px){.ghost-btn{display:inline-flex}}
.ghost-btn:hover{color:var(--primary);background:#F4F8FF}
.header-cta{display:none}
@media(min-width:1024px){.header-cta{display:inline-flex}}
.menu-btn{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  background:#F4F7FC;border:1px solid var(--border);border-radius:var(--radius-md);cursor:pointer;
  transition:background .2s var(--ease);
}
.menu-btn:hover{background:#EAF1FB}
@media(min-width:1024px){.menu-btn{display:none}}
.mobile-drawer{
  position:fixed;left:0;right:0;top:68px;bottom:0;z-index:45;
  background:#fff;padding:14px 20px 26px;display:none;flex-direction:column;gap:4px;overflow-y:auto;
}
.mobile-drawer.is-open{display:flex}
.drawer-link{
  display:flex;align-items:center;height:48px;font-size:16px;font-weight:500;color:#3C4C63;
  border-bottom:1px solid var(--line);transition:color .18s var(--ease);
}
.drawer-link:hover,.drawer-link.is-active{color:var(--primary)}
.drawer-foot{margin-top:auto;padding-top:20px}
.drawer-foot .btn-primary{width:100%}
body.is-locked{overflow:hidden}

/* ---------- 文章头部 ---------- */
.page-head{background:var(--bg-alt);border-bottom:1px solid var(--border);padding:22px 0 40px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);flex-wrap:wrap}
.breadcrumb a{color:var(--text-3);transition:color .18s var(--ease)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:#C4D0E2}
.breadcrumb .current{color:var(--text)}
.article-title{
  font-size:clamp(24px,3.2vw,36px);font-weight:700;line-height:1.35;
  color:var(--text);letter-spacing:-.01em;margin-top:22px;max-width:880px;
}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-top:16px;font-size:13px;color:var(--text-3)}
.article-meta .badge-cat{
  background:#fff;border:1px solid var(--primary-border);color:var(--primary);
  font-size:12px;font-weight:600;padding:3px 12px;border-radius:999px;
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C9D6E8}

/* ---------- 正文布局 ---------- */
.article-wrap{padding:48px 0 72px}
@media(min-width:1024px){.article-wrap{padding:64px 0 96px}}
.article-layout{display:grid;grid-template-columns:1fr;gap:36px}
@media(min-width:1024px){.article-layout{grid-template-columns:240px minmax(0,1fr);gap:56px}}
.toc-col{display:none}
@media(min-width:1024px){.toc-col{display:block}}
.toc-col.is-hidden{display:none}
.toc-card{position:sticky;top:100px;border-left:2px solid var(--line);padding-left:18px}
.toc-head{font-size:12px;font-weight:600;color:var(--text-3);letter-spacing:.06em;margin-bottom:12px}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-link{
  display:block;font-size:14px;line-height:1.6;color:var(--text-2);
  padding:6px 0;border-left:2px solid transparent;margin-left:-20px;padding-left:18px;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.toc-link:hover{color:var(--primary)}
.toc-link.is-active{color:var(--primary);font-weight:600;border-left-color:var(--primary)}
.toc-mobile{display:block;margin-bottom:28px}
@media(min-width:1024px){.toc-mobile{display:none}}
.toc-mobile summary{
  cursor:pointer;list-style:none;font-size:14px;font-weight:600;color:var(--text);
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-md);padding:14px 16px;
  display:flex;align-items:center;justify-content:space-between;
}
.toc-mobile summary::-webkit-details-marker{display:none}
.toc-mobile summary::after{content:"＋";color:var(--primary);font-weight:700}
.toc-mobile[open] summary::after{content:"－"}
.toc-mobile .toc-list{padding:12px 4px 4px}

.article-main{max-width:820px}
.article-body{font-size:16px;line-height:1.9;color:var(--text-body)}
.article-body > * + *{margin-top:18px}
.article-body p{margin:0}
.article-body h2{
  font-size:clamp(20px,2.4vw,24px);font-weight:700;line-height:1.4;color:var(--text);
  margin-top:40px;margin-bottom:16px;padding-left:14px;border-left:3px solid var(--primary);
}
.article-body h2:first-child{margin-top:0}
.article-body h3{font-size:20px;font-weight:700;color:var(--text);margin-top:28px;margin-bottom:12px}
.article-body ul,.article-body ol{margin:16px 0;padding-left:4px}
.article-body li{position:relative;padding-left:20px;margin-bottom:10px;line-height:1.85}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:11px;width:7px;height:7px;border-radius:50%;background:var(--mint);
}
.article-body ol{counter-reset:item}
.article-body ol li{padding-left:28px}
.article-body ol li::before{
  counter-increment:item;content:counter(item);
  position:absolute;left:0;top:2px;width:20px;height:20px;border-radius:6px;
  background:var(--primary-soft);color:var(--primary);font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;background:var(--bg-alt);
  border-left:3px solid var(--primary);border-radius:0 var(--radius-md) var(--radius-md) 0;
  color:var(--text-2);font-size:15px;line-height:1.85;
}
.article-body blockquote p{margin:0}
.article-body img{border-radius:var(--radius-md);width:100%;height:auto;margin:24px 0;border:1px solid var(--border)}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body a{color:var(--primary);font-weight:500}
.article-body a:hover{text-decoration:underline}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:14px;
  border:1px solid var(--border);border-radius:var(--radius-md);overflow:hidden;
}
.article-body th{background:var(--primary-soft);color:var(--text);font-weight:600;text-align:left}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--border);line-height:1.7}
.article-body tr:last-child td{border-bottom:0}
.article-body code{background:#F1F5FC;border-radius:6px;padding:2px 6px;font-size:14px;color:var(--primary-dark)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}

.empty-state{
  border:1px dashed #C9D8F2;background:#FBFDFF;border-radius:var(--radius-lg);
  padding:56px 28px;text-align:center;
}
.empty-state .empty-icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:16px;background:var(--primary-soft);
  display:flex;align-items:center;justify-content:center;color:var(--primary);
}
.empty-state h3{font-size:18px;font-weight:700;color:var(--text);margin-bottom:10px}
.empty-state p{font-size:14px;color:var(--text-3);margin-bottom:22px}

.article-tags{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-top:44px;padding-top:26px;border-top:1px solid var(--line)}
.tag-label{font-size:13px;color:var(--text-3);margin-right:2px}
.tag{
  display:inline-flex;align-items:center;font-size:13px;font-weight:500;color:var(--text-2);
  background:#F4F7FC;border:1px solid var(--border);border-radius:999px;padding:6px 14px;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.tag:hover{color:var(--primary);background:var(--primary-soft);border-color:var(--primary-border)}

/* ---------- 区块通用 ---------- */
.section{padding:64px 0}
@media(min-width:768px){.section{padding:80px 0}}
@media(min-width:1024px){.section{padding:96px 0}}
.section-alt{background:var(--bg-alt)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;flex-wrap:wrap}
.section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;color:var(--text);line-height:1.3}
.section-head .sub{font-size:15px;color:var(--text-3);margin-top:10px;max-width:640px}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary)}
.text-link svg{transition:transform .2s var(--ease)}
.text-link:hover svg{transform:translateX(3px)}

/* ---------- 延伸阅读卡 ---------- */
.read-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:768px){.read-grid{grid-template-columns:repeat(3,1fr)}}
.read-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.read-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--primary-border)}
.read-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--primary-soft)}
.read-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.read-card:hover .read-thumb img{transform:scale(1.03)}
.read-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.read-body h3{font-size:17px;font-weight:600;color:var(--text);line-height:1.5}
.read-body p{font-size:14px;color:var(--text-2);line-height:1.75}
.read-body .text-link{margin-top:auto;padding-top:6px}

/* ---------- 返回列表 ---------- */
.back-bar{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:22px 24px;box-shadow:var(--shadow-card);
}
.back-bar .back-text{font-size:15px;font-weight:600;color:var(--text)}
.back-bar .back-sub{font-size:13px;color:var(--text-3);margin-top:4px}

/* ---------- CTA ---------- */
.cta-section{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#EDF3FF 0%,#E9FBF5 100%);
  padding:72px 0;
}
@media(min-width:1024px){.cta-section{padding:96px 0}}
.cta-section::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(circle,rgba(26,95,255,.14) 1px,transparent 1px);
  background-size:16px 16px;
}
.cta-inner{position:relative;display:grid;grid-template-columns:1fr;gap:28px;align-items:center}
@media(min-width:1024px){.cta-inner{grid-template-columns:1.35fr .65fr}}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;color:var(--text);line-height:1.35}
.cta-inner .cta-desc{font-size:15px;color:var(--text-2);margin-top:14px;max-width:620px}
.cta-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:flex-start}
@media(min-width:1024px){.cta-actions{justify-content:flex-end}}

/* ---------- 页脚 ---------- */
.site-footer{background:#F5F8FD;border-top:1px solid var(--border);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
@media(min-width:1024px){.footer-grid{grid-template-columns:3fr 3fr 3fr 3fr}}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.8;max-width:340px;margin-bottom:10px}
.footer-social{display:flex;gap:10px;margin-top:18px}
.footer-social a{
  width:36px;height:36px;border-radius:10px;background:#fff;border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;color:var(--text-2);
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.footer-social a:hover{color:var(--primary);border-color:var(--primary-border);transform:translateY(-2px)}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--text-2);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12px;color:var(--text-3);
}
.footer-bottom .sep{color:#C4D0E2;margin:0 8px}

@media(max-width:520px){
  .brand-name{font-size:14px}
  .brand-sub{display:none}
  .article-title{margin-top:16px}
  .back-bar{flex-direction:column;align-items:flex-start}
}

/* roulang page: category1 */
:root{
  --primary:#1A5FFF;
  --primary-dark:#0B3FCC;
  --primary-light:#EDF3FF;
  --primary-border:#D6E3FF;
  --teal:#12D8A0;
  --orange:#FF8A3D;
  --ink:#0F1B2D;
  --ink-body:#23303F;
  --text-2:#4A5B73;
  --text-3:#7D8DA5;
  --border:#E4EBF6;
  --divider:#EEF2F9;
  --bg-alt:#F6F9FE;
  --radius-lg:16px;
  --radius-md:12px;
  --shadow-card:0 2px 4px rgba(15,42,90,.04),0 16px 40px -20px rgba(15,42,90,.18);
  --shadow-hover:0 4px 8px rgba(15,42,90,.06),0 24px 48px -20px rgba(15,42,90,.24);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans CJK SC",Inter,system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-body);
  background:#FFFFFF;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font:inherit}
h1,h2,h3,h4,p,dl,dt,dd,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:0;box-shadow:0 0 0 3px rgba(26,95,255,.28);border-radius:8px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:768px){.container{padding-left:32px;padding-right:32px}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid #E8EEF7;
}
.nav-inner{height:68px;display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:32px;height:32px;border-radius:9px;background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;
  box-shadow:0 6px 16px -6px rgba(26,95,255,.65);flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:16px;font-weight:700;color:var(--ink);letter-spacing:-.01em;white-space:nowrap}
.brand-sub{font-size:11px;color:var(--text-3);letter-spacing:.02em;white-space:nowrap}
.nav-main{display:flex;align-items:center;gap:28px;margin-left:12px}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);
  padding:6px 0;transition:color .2s var(--ease);white-space:nowrap;
}
.nav-link:hover{color:var(--primary)}
.nav-link.is-active{color:var(--primary);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  border-radius:2px;background:var(--primary);
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-search{
  position:relative;display:flex;align-items:center;width:220px;height:40px;
  background:#F4F7FC;border:1px solid var(--border);border-radius:12px;
  padding:0 10px 0 34px;
  transition:width .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.nav-search svg{position:absolute;left:11px;width:16px;height:16px;color:var(--text-3)}
.nav-search input{width:100%;border:0;background:transparent;outline:none;font-size:14px;color:var(--ink);min-width:0}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search kbd{
  font-size:11px;color:var(--text-3);background:#fff;border:1px solid var(--border);
  border-radius:6px;padding:1px 5px;font-family:inherit;white-space:nowrap;
}
.nav-search:focus-within{width:320px;border-color:var(--primary);box-shadow:0 0 0 3px rgba(26,95,255,.16)}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;height:40px;padding:0 20px;
  border-radius:12px;background:var(--primary);color:#fff;font-size:15px;font-weight:600;
  white-space:nowrap;transition:background .2s var(--ease),box-shadow .2s var(--ease),transform .12s var(--ease);
}
.btn-primary:hover{background:var(--primary-dark);box-shadow:0 12px 24px -12px rgba(26,95,255,.85)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;height:40px;padding:0 16px;
  border-radius:12px;background:#fff;border:1px solid #D8E2F2;color:var(--primary);
  font-size:14px;font-weight:600;white-space:nowrap;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.btn-ghost:hover{background:#F4F8FF;border-color:var(--primary)}
.nav-burger{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border-radius:12px;border:1px solid var(--border);background:#fff;
}
.nav-burger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.nav-burger span::before,.nav-burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform .2s var(--ease);
}
.nav-burger span::before{top:-6px}
.nav-burger span::after{top:6px}
.nav-drawer{display:none;border-top:1px solid var(--divider);background:#fff;padding:8px 0 20px}
.nav-drawer.is-open{display:block}
.drawer-link{
  display:flex;align-items:center;height:48px;padding:0 20px;font-size:15px;
  color:var(--ink-body);border-bottom:1px solid var(--divider);
}
.drawer-link.is-active{color:var(--primary);font-weight:600}
.drawer-cta{padding:18px 20px 0}
.drawer-cta .btn-primary{width:100%;height:48px}
@media(max-width:1180px){.nav-search{width:180px}.nav-search:focus-within{width:220px}}
@media(max-width:1023px){
  .nav-main{display:none}
  .nav-search{display:none}
  .nav-burger{display:flex}
}
@media(max-width:767px){
  .btn-ghost{display:none}
  .brand-name{font-size:14px}
  .brand-sub{display:none}
}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);padding:20px 0;
}
.breadcrumb a{transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:#C6D2E6}
.breadcrumb .current{color:var(--ink);font-weight:600}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;
  background-image:linear-gradient(180deg,rgba(246,249,254,.95) 0%,rgba(255,255,255,.99) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover,cover;
  background-position:center,center;
  border-bottom:1px solid var(--divider);
  padding-bottom:52px;
}
.page-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(circle,rgba(26,95,255,.14) 1px,transparent 1px);
  background-size:16px 16px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
}
.page-head .container{position:relative;z-index:1}
.page-tag{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;
  border-radius:999px;background:#fff;border:1px solid var(--primary-border);
  color:var(--primary);font-size:12px;font-weight:600;letter-spacing:.02em;margin-bottom:18px;
}
.page-tag i{width:6px;height:6px;border-radius:50%;background:var(--teal);display:inline-block}
.page-title{
  font-size:clamp(30px,4.2vw,50px);font-weight:800;line-height:1.22;
  letter-spacing:-.01em;color:var(--ink);max-width:920px;
}
.page-lead{
  margin-top:16px;font-size:17px;line-height:1.85;color:var(--text-2);max-width:720px;
}
.page-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.chip{
  display:inline-flex;align-items:center;height:30px;padding:0 12px;border-radius:999px;
  background:#fff;border:1px solid var(--border);color:var(--text-2);font-size:13px;
}

/* ---------- 锚点条 ---------- */
.anchor-bar{
  position:sticky;top:68px;z-index:30;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
.anchor-inner{
  display:flex;gap:8px;overflow-x:auto;padding:10px 0;
  scrollbar-width:none;-ms-overflow-style:none;
}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-link{
  flex:0 0 auto;font-size:14px;color:var(--text-2);padding:8px 14px;border-radius:999px;
  border:1px solid transparent;transition:all .2s var(--ease);white-space:nowrap;
}
.anchor-link:hover{color:var(--primary);background:var(--primary-light)}
.anchor-link.active{
  color:var(--primary);background:var(--primary-light);
  border-color:var(--primary-border);font-weight:600;
}

/* ---------- 主体两栏 ---------- */
.layout{display:grid;grid-template-columns:1fr;gap:40px;padding:48px 0 8px}
@media(min-width:1024px){
  .layout{grid-template-columns:minmax(220px,3fr) 9fr;gap:48px;padding:56px 0 8px}
}
.toc{display:none}
@media(min-width:1024px){.toc{display:block;position:sticky;top:136px;align-self:start}}
.toc-card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:20px;box-shadow:var(--shadow-card)}
.toc-title{font-size:12px;letter-spacing:.08em;color:var(--text-3);font-weight:600;margin-bottom:10px}
.toc a{
  display:block;font-size:14px;color:var(--text-2);padding:7px 0 7px 12px;
  border-left:2px solid transparent;transition:all .2s var(--ease);line-height:1.6;
}
.toc a:hover{color:var(--primary)}
.toc a.active{color:var(--primary);border-left-color:var(--primary);font-weight:600}
.toc-note{
  margin-top:16px;padding-top:16px;border-top:1px solid var(--divider);
  font-size:12.5px;line-height:1.7;color:var(--text-3);
}

/* ---------- 正文 ---------- */
.article{max-width:760px}
.article h2{
  font-size:clamp(22px,2.5vw,28px);font-weight:700;line-height:1.35;color:var(--ink);
  margin:48px 0 18px;scroll-margin-top:150px;
}
.article h2:first-of-type{margin-top:0}
.article h3{font-size:19px;font-weight:700;line-height:1.5;color:var(--ink);margin:28px 0 10px}
.article p{font-size:16px;line-height:1.9;color:var(--ink-body);margin-bottom:16px}
.article a.inline{
  color:var(--primary);font-weight:600;border-bottom:1px solid rgba(26,95,255,.35);
  transition:border-color .2s var(--ease);
}
.article a.inline:hover{border-color:var(--primary)}
.sec-lead{font-size:15px;color:var(--text-2);line-height:1.85;margin-bottom:20px}

.info-grid{display:grid;grid-template-columns:1fr;gap:12px;margin:22px 0 6px}
@media(min-width:640px){.info-grid{grid-template-columns:1fr 1fr}}
.info-item{
  background:var(--bg-alt);border:1px solid var(--border);border-radius:12px;padding:14px 16px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.info-item:hover{border-color:var(--primary-border);box-shadow:0 10px 24px -18px rgba(15,42,90,.5)}
.info-item dt{font-size:12px;color:var(--text-3);letter-spacing:.02em;margin-bottom:4px}
.info-item dd{font-size:15px;font-weight:600;color:var(--ink);line-height:1.7}

.figure{margin:28px 0}
.figure img{width:100%;border-radius:12px;border:1px solid var(--border);object-fit:cover}
.figure figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}

.step-list{counter-reset:step;margin:22px 0 8px}
.step-list li{position:relative;padding-left:58px;margin-bottom:20px}
.step-list li::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:2px;width:40px;height:40px;border-radius:12px;
  background:var(--primary-light);border:1px solid var(--primary-border);
  color:var(--primary);font-size:14px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.step-list li strong{display:block;font-size:16px;font-weight:700;color:var(--ink);margin-bottom:4px}
.step-list li p{font-size:15px;color:var(--text-2);line-height:1.85;margin:0}

.table-wrap{
  overflow-x:auto;margin:22px 0 10px;border:1px solid var(--border);
  border-radius:14px;-webkit-overflow-scrolling:touch;
}
table{width:100%;border-collapse:collapse;min-width:580px}
th,td{padding:14px 16px;text-align:left;font-size:14px;line-height:1.7;border-bottom:1px solid var(--divider)}
thead th{background:var(--primary-light);color:var(--ink);font-weight:700;font-size:13px;letter-spacing:.01em}
tbody td{color:var(--text-2)}
tbody td:first-child{color:var(--ink);font-weight:600}
tbody tr:nth-child(even){background:#F8FBFF}
tbody tr:last-child td{border-bottom:0}

.tip-card{
  background:var(--primary-light);border-left:3px solid var(--primary);
  border-radius:12px;padding:18px 22px;margin:22px 0;
}
.tip-card h3{margin:0 0 8px;font-size:16px;color:var(--ink)}
.tip-card ul li{
  position:relative;padding-left:18px;font-size:15px;line-height:1.85;
  color:var(--text-2);margin-bottom:6px;
}
.tip-card ul li::before{
  content:"";position:absolute;left:0;top:10px;width:6px;height:6px;
  border-radius:50%;background:var(--teal);
}
.tip-card ul li:last-child{margin-bottom:0}

/* ---------- FAQ ---------- */
.faq-block{margin-top:56px;scroll-margin-top:150px}
.faq-item{
  background:#fff;border:1px solid #E6EDF8;border-radius:16px;
  padding:18px 20px;margin-bottom:12px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item:hover{border-color:rgba(26,95,255,.32)}
.faq-item[open]{border-left:3px solid var(--primary);padding-left:17px;box-shadow:var(--shadow-card)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:16px;font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{position:relative;flex:0 0 18px;width:18px;height:18px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
  transition:transform .2s var(--ease);
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item[open] .faq-icon::after{transform:scaleY(0)}
.faq-body{font-size:15px;line-height:1.85;color:var(--text-2);margin-top:12px}

/* ---------- CTA ---------- */
.cta-wrap{padding:56px 0 80px}
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#EDF3FF 0%,#E9FBF5 100%);
  border:1px solid var(--primary-border);border-radius:24px;
  padding:40px 28px;display:flex;flex-direction:column;gap:22px;
}
.cta-band::after{
  content:"";position:absolute;right:-40px;top:-40px;width:280px;height:280px;pointer-events:none;
  background-image:radial-gradient(circle,rgba(26,95,255,.14) 1px,transparent 1px);
  background-size:16px 16px;opacity:.6;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;color:var(--ink);line-height:1.35}
.cta-band p{font-size:15px;color:var(--text-2);line-height:1.85;margin-top:10px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px;position:relative;z-index:1}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--primary);
}
.text-link svg{width:16px;height:16px;transition:transform .2s var(--ease)}
.text-link:hover svg{transform:translateX(2px)}
@media(min-width:768px){
  .cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:48px}
  .cta-band>div:first-child{max-width:600px}
}

/* ---------- 页脚 ---------- */
.site-footer{background:#F5F8FD;border-top:1px solid var(--border);padding:64px 0 28px;margin-top:24px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.footer-grid{grid-template-columns:3fr 3fr 3fr 3fr;gap:24px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{width:30px;height:30px;border-radius:9px}
.footer-name{font-size:16px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.footer-desc{font-size:14px;line-height:1.85;color:var(--text-2);max-width:280px}
.footer-social{display:flex;gap:10px;margin-top:18px}
.footer-social a{
  width:36px;height:36px;border-radius:10px;background:#fff;border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;color:var(--text-2);
  transition:all .2s var(--ease);
}
.footer-social a:hover{color:var(--primary);border-color:var(--primary-border);transform:translateY(-2px)}
.footer-social svg{width:16px;height:16px}
.footer-title{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:14px;letter-spacing:.01em}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:var(--text-2);transition:color .2s var(--ease)}
.footer-links a:hover{color:var(--primary)}
.footer-note{font-size:14px;line-height:1.9;color:var(--text-2)}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid var(--border);
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:12px;color:var(--text-3);
}
.footer-bottom .dot{color:#C6D2E6}
@media(max-width:1023px){
  .footer-grid{gap:32px}
}

/* roulang page: category2 */
:root{
    --blue:#1A5FFF;
    --blue-deep:#0B3FCC;
    --blue-soft:#EDF3FF;
    --blue-line:#D6E3FF;
    --cyan:#12D8A0;
    --orange:#FF8A3D;
    --bg:#FFFFFF;
    --bg-alt:#F6F9FE;
    --card:#FFFFFF;
    --ink:#0F1B2D;
    --ink-2:#4A5B73;
    --ink-3:#7D8DA5;
    --body:#23303F;
    --line:#E4EBF6;
    --line-2:#EEF2F9;
    --radius:16px;
    --radius-sm:12px;
    --shadow-card:0 2px 4px rgba(15,42,90,.04), 0 16px 40px -20px rgba(15,42,90,.18);
    --shadow-hover:0 4px 8px rgba(15,42,90,.06), 0 24px 48px -20px rgba(15,42,90,.24);
    --ease:cubic-bezier(.2,.7,.3,1);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  .site-body{
    margin:0;background:var(--bg);color:var(--body);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans CJK SC",Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;line-height:1.85;font-weight:400;
    -webkit-font-smoothing:antialiased;
  }
  .site-body img{max-width:100%;height:auto;display:block}
  .site-body a{color:inherit;text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease)}
  .site-body button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  .site-body h1,.site-body h2,.site-body h3,.site-body h4{margin:0;color:var(--ink);font-weight:700;line-height:1.3}
  .site-body p{margin:0}
  .site-body ul{margin:0;padding:0;list-style:none}
  .site-body input,.site-body textarea{font:inherit;color:inherit}
  .site-body strong{font-weight:700;color:var(--ink)}
  .container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
  @media(min-width:768px){.container{padding-left:32px;padding-right:32px}}

  /* ---------- header / nav ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(255,255,255,.88);
    -webkit-backdrop-filter:saturate(180%) blur(14px);
    backdrop-filter:saturate(180%) blur(14px);
    border-bottom:1px solid #E8EEF7;
  }
  .nav-inner{display:flex;align-items:center;gap:20px;height:68px}
  .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
  .brand-mark{
    width:32px;height:32px;border-radius:9px;background:var(--blue);color:#fff;
    display:grid;place-items:center;font-size:15px;font-weight:700;letter-spacing:0;
    box-shadow:0 6px 16px -8px rgba(26,95,255,.8);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.2}
  .brand-name{font-size:15px;font-weight:700;color:var(--ink);letter-spacing:-.01em;white-space:nowrap}
  .brand-sub{font-size:11px;color:var(--ink-3);letter-spacing:.06em;white-space:nowrap}
  .nav-main{display:none;align-items:center;gap:28px;margin-left:10px}
  .nav-link{font-size:15px;font-weight:500;color:var(--ink-2);padding:6px 0;border-bottom:2px solid transparent;white-space:nowrap}
  .nav-link:hover{color:var(--blue)}
  .nav-link.is-active{color:var(--blue);font-weight:600;border-bottom-color:var(--blue)}
  .nav-right{margin-left:auto;display:flex;align-items:center;gap:10px}
  .cmd-search{
    display:none;align-items:center;gap:8px;height:40px;width:220px;padding:0 12px;
    background:#F4F7FC;border:1px solid var(--line);border-radius:var(--radius-sm);
    transition:width .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
  }
  .cmd-search:focus-within{width:320px;background:#fff;border-color:var(--blue-line);box-shadow:0 0 0 3px rgba(26,95,255,.18)}
  .cmd-search svg{flex:0 0 auto;color:var(--ink-3)}
  .cmd-search input{flex:1 1 auto;min-width:0;border:0;background:transparent;outline:none;font-size:14px;color:var(--ink)}
  .cmd-search input::placeholder{color:#9AA9BF}
  .cmd-kbd{
    flex:0 0 auto;font-size:11px;line-height:1;color:var(--ink-3);
    background:#E9EFF8;border-radius:6px;padding:4px 6px;
  }
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    font-size:15px;font-weight:600;border-radius:var(--radius-sm);
    padding:12px 22px;border:1px solid transparent;
    transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),transform .12s var(--ease);
  }
  .btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(26,95,255,.28)}
  .btn-primary{background:var(--blue);color:#fff}
  .btn-primary:hover{background:var(--blue-deep);color:#fff;box-shadow:0 14px 28px -16px rgba(11,63,204,.85)}
  .btn-primary:active{transform:scale(.98)}
  .btn-secondary{background:#fff;border-color:#D8E2F2;color:var(--blue)}
  .btn-secondary:hover{background:#F4F8FF;border-color:var(--blue)}
  .btn-sm{padding:9px 16px;font-size:14px;border-radius:10px}
  .btn-ghost{
    display:none;font-size:14px;font-weight:500;color:var(--ink-2);
    padding:9px 14px;border-radius:10px;transition:background-color .2s var(--ease),color .2s var(--ease);
  }
  .btn-ghost:hover{background:#F4F7FC;color:var(--blue)}
  .nav-toggle{
    width:40px;height:40px;display:grid;place-items:center;border-radius:10px;
    border:1px solid var(--line);background:#fff;color:var(--ink);
  }
  .nav-toggle:hover{border-color:var(--blue-line);color:var(--blue)}
  .nav-drawer{display:none;border-top:1px solid var(--line-2);background:#fff}
  .nav-drawer.is-open{display:block}
  .nav-drawer-inner{padding:12px 0 20px}
  .drawer-link{
    display:flex;align-items:center;height:48px;padding:0 4px;
    font-size:16px;font-weight:500;color:var(--ink-2);border-bottom:1px solid var(--line-2);
  }
  .drawer-link.is-active{color:var(--blue);font-weight:600}
  .drawer-cta{margin-top:18px}
  .drawer-cta .btn{width:100%}
  body.no-scroll{overflow:hidden}
  @media(min-width:1024px){
    .nav-main{display:flex}
    .cmd-search{display:flex}
    .btn-ghost{display:inline-flex}
    .nav-toggle{display:none}
    .nav-drawer{display:none !important}
  }

  /* ---------- 面包屑 ---------- */
  .crumb{padding:20px 0;font-size:13px;color:var(--ink-3)}
  .crumb a:hover{color:var(--blue)}
  .crumb .sep{margin:0 8px;color:#B6C3D6}
  .crumb .current{color:var(--ink)}

  /* ---------- hero ---------- */
  .page-hero{position:relative;padding:20px 0 56px;overflow:hidden}
  .page-hero::before{
    content:"";position:absolute;inset:0;
    background-image:radial-gradient(circle, rgba(26,95,255,.14) 1px, transparent 1px);
    background-size:16px 16px;opacity:.5;
    -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,0));
    mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,0));
    pointer-events:none;
  }
  .page-hero .container{position:relative;z-index:1}
  .hero-grid{display:grid;grid-template-columns:1fr;gap:36px;align-items:center}
  @media(min-width:1024px){.hero-grid{grid-template-columns:6fr 6fr;gap:48px}}
  .hero-eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.08em;
    color:var(--blue);background:var(--blue-soft);border:1px solid var(--blue-line);
    border-radius:999px;padding:6px 14px;font-weight:600;
  }
  .hero-eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--cyan)}
  .page-title{
    font-size:clamp(30px,4.2vw,50px);font-weight:800;line-height:1.22;letter-spacing:-.01em;
    color:var(--ink);margin-top:18px;
  }
  .hero-sub{font-size:17px;color:var(--ink-2);margin-top:16px;line-height:1.8;max-width:32em}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
  .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
  .chip{
    font-size:12px;letter-spacing:.02em;color:var(--ink-2);
    background:#F4F7FC;border:1px solid var(--line);border-radius:999px;padding:6px 12px;
  }
  .hero-figure{position:relative}
  .hero-figure .block-deco{
    position:absolute;inset:14px -14px -14px 14px;border-radius:var(--radius);background:var(--blue-soft);
  }
  .hero-figure img{
    position:relative;width:100%;aspect-ratio:4/3;object-fit:cover;
    border-radius:var(--radius);border:1px solid var(--line);box-shadow:var(--shadow-card);
  }

  /* ---------- tabs ---------- */
  .tabbar{
    display:flex;flex-wrap:wrap;gap:10px;padding:14px;background:#fff;
    border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow-card);
  }
  .tab{
    font-size:14px;font-weight:600;color:var(--ink-2);
    background:#F4F7FC;border:1px solid transparent;border-radius:999px;
    padding:10px 20px;min-height:44px;display:inline-flex;align-items:center;
    transition:all .2s var(--ease);
  }
  .tab:hover{color:var(--blue);background:#EAF1FF}
  .tab.is-active{background:var(--blue);color:#fff;box-shadow:0 10px 22px -14px rgba(26,95,255,.9)}

  /* ---------- sections ---------- */
  .section{padding:48px 0}
  @media(min-width:768px){.section{padding:72px 0}}
  @media(min-width:1024px){.section{padding:96px 0}}
  .section-alt{background:var(--bg-alt)}
  .sec-head{max-width:760px}
  .sec-title{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.3}
  .sec-desc{font-size:15px;color:var(--ink-2);margin-top:14px}
  .sec-head-row{display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end;justify-content:space-between}
  .link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--blue)}
  .link-more svg{transition:transform .2s var(--ease)}
  .link-more:hover svg{transform:translateX(2px)}

  /* ---------- card matrix ---------- */
  .matrix{display:grid;grid-template-columns:1fr;gap:20px;margin-top:32px}
  @media(min-width:768px){.matrix{grid-template-columns:repeat(2,1fr)}}
  .m-card{
    display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
    border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-card);
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  }
  .m-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--blue-line)}
  .m-card--tall{padding:30px}
  .m-card--media{padding:0;overflow:hidden}
  .m-media{position:relative;aspect-ratio:16/9;overflow:hidden}
  .m-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
  .m-card--media:hover .m-media img{transform:scale(1.03)}
  .m-media-body{padding:24px 26px 26px}
  .m-icon{
    width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
    background:var(--blue-soft);color:var(--blue);margin-bottom:18px;
  }
  .m-card h3{font-size:18px;font-weight:700;color:var(--ink)}
  .m-card p{font-size:15px;color:var(--ink-2);margin-top:12px;line-height:1.8}
  .m-foot{margin-top:auto;padding-top:20px}
  .m-flag{
    align-self:flex-start;font-size:12px;font-weight:600;color:var(--blue);
    background:var(--blue-soft);border-radius:999px;padding:5px 12px;margin-bottom:16px;
  }

  /* ---------- alternating ---------- */
  .split{display:grid;grid-template-columns:1fr;gap:32px;align-items:center;margin-top:32px}
  @media(min-width:1024px){.split{grid-template-columns:repeat(2,1fr);gap:56px}}
  .split + .split{margin-top:56px}
  .split-media{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card)}
  .split-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
  @media(min-width:1024px){.split.reverse .split-media{order:2}}
  .split h3{font-size:20px;font-weight:700}
  .split p{font-size:15px;color:var(--ink-2);margin-top:14px;line-height:1.85}
  .steps{margin-top:22px;display:flex;flex-direction:column;gap:16px}
  .step{display:flex;gap:14px;align-items:flex-start}
  .step-num{
    flex:0 0 auto;width:28px;height:28px;border-radius:50%;
    display:grid;place-items:center;font-size:13px;font-weight:700;
    color:#0B3F2C;background:rgba(18,216,160,.18);border:1px solid rgba(18,216,160,.45);
  }
  .step-body strong{display:block;font-size:15px;font-weight:600;color:var(--ink)}
  .step-body span{display:block;font-size:14px;color:var(--ink-2);margin-top:4px;line-height:1.75}

  /* ---------- table ---------- */
  .table-wrap{margin-top:32px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:var(--shadow-card)}
  .table-scroll{overflow-x:auto}
  table.cmp{width:100%;border-collapse:collapse;min-width:660px}
  table.cmp th,table.cmp td{padding:16px 20px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line-2)}
  table.cmp thead th{background:var(--blue-soft);color:var(--ink);font-weight:700;font-size:14px;letter-spacing:.02em}
  table.cmp tbody tr:nth-child(odd){background:#F8FBFF}
  table.cmp tbody tr:last-child td{border-bottom:0}
  table.cmp td:first-child{font-weight:600;color:var(--ink)}
  table.cmp td{color:var(--ink-2)}

  /* ---------- notice ---------- */
  .notice{
    margin-top:32px;background:var(--blue-soft);border-left:3px solid var(--blue);
    border-radius:0 var(--radius) var(--radius) 0;padding:22px 26px;
  }
  .notice h3{font-size:16px;font-weight:700;color:var(--ink)}
  .notice ul{margin-top:12px;display:flex;flex-direction:column;gap:10px}
  .notice li{position:relative;padding-left:18px;font-size:14.5px;color:var(--ink-2);line-height:1.8}
  .notice li::before{
    content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--blue);
  }

  /* ---------- faq ---------- */
  .faq-grid{display:grid;grid-template-columns:1fr;gap:32px;margin-top:32px}
  @media(min-width:1024px){.faq-grid{grid-template-columns:4fr 8fr;gap:48px}}
  .faq-list{display:flex;flex-direction:column;gap:12px}
  details.faq{
    background:#fff;border:1px solid #E6EDF8;border-radius:var(--radius);
    padding:18px 20px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  details.faq:hover{border-color:rgba(26,95,255,.4)}
  details.faq[open]{border-left:3px solid var(--blue);box-shadow:var(--shadow-card)}
  details.faq summary{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    font-size:16px;font-weight:600;color:var(--ink);cursor:pointer;list-style:none;
  }
  details.faq summary::-webkit-details-marker{display:none}
  .faq-ind{
    flex:0 0 auto;width:22px;height:22px;position:relative;
    transition:transform .2s var(--ease);color:var(--blue);
  }
  .faq-ind::before,.faq-ind::after{
    content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;
  }
  .faq-ind::before{width:12px;height:2px;transform:translate(-50%,-50%)}
  .faq-ind::after{width:2px;height:12px;transform:translate(-50%,-50%)}
  details.faq[open] .faq-ind{transform:rotate(180deg)}
  details.faq[open] .faq-ind::after{opacity:0}
  .faq-answer{font-size:15px;color:#5A6B85;line-height:1.85;margin-top:12px}

  /* ---------- cta ---------- */
  .cta-band{position:relative;overflow:hidden;background:linear-gradient(135deg,#EDF3FF 0%,#E9FBF5 100%)}
  .cta-band::before{
    content:"";position:absolute;inset:0;
    background-image:radial-gradient(circle, rgba(26,95,255,.14) 1px, transparent 1px);
    background-size:16px 16px;opacity:.55;pointer-events:none;
  }
  .cta-inner{position:relative;z-index:1;padding:56px 0}
  @media(min-width:1024px){.cta-inner{padding:80px 0}}
  .cta-card{
    background:#fff;border:1px solid var(--line);border-radius:20px;
    padding:32px;box-shadow:0 4px 8px rgba(15,42,90,.06), 0 32px 64px -32px rgba(15,42,90,.32);
  }
  .cta-title{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35}
  .cta-list{margin-top:24px;display:flex;flex-direction:column;gap:16px}
  .cta-list li{position:relative;padding-left:26px}
  .cta-list li .tick{
    position:absolute;left:0;top:5px;width:16px;height:16px;border-radius:50%;
    background:rgba(18,216,160,.18);border:1px solid rgba(18,216,160,.5);
  }
  .cta-list li .tick::after{
    content:"";position:absolute;left:5px;top:3px;width:4px;height:7px;
    border-right:2px solid #0E9E75;border-bottom:2px solid #0E9E75;transform:rotate(42deg);
  }
  .cta-list li strong{display:block;font-size:16px;font-weight:600;color:var(--ink)}
  .cta-list li span{display:block;font-size:13px;color:var(--ink-3);margin-top:4px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:28px}

  /* ---------- footer ---------- */
  .site-footer{background:#F5F8FD;border-top:1px solid var(--line);padding:64px 0 28px;margin-top:0}
  .footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
  @media(min-width:1024px){.footer-grid{grid-template-columns:3fr 3fr 3fr 3fr;gap:40px}}
  .f-brand{display:flex;align-items:center;gap:10px}
  .f-about{font-size:14px;color:var(--ink-2);margin-top:18px;line-height:1.8;max-width:30em}
  .f-social{display:flex;gap:10px;margin-top:20px}
  .f-social a{
    width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:#fff;
    display:grid;place-items:center;color:var(--ink-2);font-size:12px;font-weight:600;
  }
  .f-social a:hover{color:var(--blue);border-color:var(--blue-line);background:#F4F8FF}
  .f-title{font-size:14px;font-weight:700;color:var(--ink);letter-spacing:.02em}
  .f-links{margin-top:16px;display:flex;flex-direction:column;gap:10px}
  .f-links a{font-size:14px;color:#5A6B85}
  .f-links a:hover{color:var(--blue)}
  .f-links span{font-size:14px;color:#5A6B85}
  .footer-bottom{
    margin-top:48px;padding-top:20px;border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;gap:8px 16px;align-items:center;
    font-size:12px;color:var(--ink-3);
  }
  .footer-bottom .dot{width:4px;height:4px;border-radius:50%;background:#C6D2E4}
  :focus-visible{outline:none;box-shadow:0 0 0 3px rgba(26,95,255,.28);border-radius:8px}