/* roulang page: index */
:root{
  --c-primary:#0F6FE0;
  --c-primary-dark:#0B5CC0;
  --c-primary-deep:#0A2E5C;
  --c-primary-soft:#E8F1FE;
  --c-accent:#12B39A;
  --c-cta:#FF7A45;
  --c-cta-dark:#F0642A;
  --c-bg:#F6F9FD;
  --c-surface:#FFFFFF;
  --c-line:#E3EAF3;
  --c-ink:#0B1F33;
  --c-muted:#5B6B7C;
  --r-card:16px;
  --r-btn:12px;
  --r-pill:999px;
  --shadow-card:0 6px 24px rgba(11,31,51,.08);
  --shadow-hover:0 12px 32px rgba(11,31,51,.12);
  --shadow-nav:0 4px 20px rgba(11,31,51,.06);
  --container:1200px;
  --focus:0 0 0 3px rgba(15,111,224,.28);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--c-bg);
  color:var(--c-ink);
  font-size:16px;
  line-height:1.78;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease}
button,input{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
h1,h2,h3,h4{margin:0;line-height:1.3;color:var(--c-primary-deep);font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:none;box-shadow:var(--focus);border-radius:8px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding-left:20px;padding-right:20px}
.mono{font-family:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;letter-spacing:.01em}

/* ---------- header / nav ---------- */
.site-header{
  position:fixed;
  inset:0 0 auto 0;
  z-index:60;
  background:rgba(255,255,255,.55);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(227,234,243,.7);
  box-shadow:var(--shadow-nav);
  transition:height .24s cubic-bezier(.2,.7,.3,1),background-color .24s ease,box-shadow .24s ease;
  height:76px;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.94);
  box-shadow:0 8px 28px rgba(11,31,51,.1);
  height:64px;
}
.header-inner{height:100%;display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--c-primary-soft);
  color:var(--c-primary);
  border:1px solid rgba(15,111,224,.14);
}
.brand-text{font-size:17px;font-weight:700;color:var(--c-primary-deep);letter-spacing:.01em}
.brand-text strong{color:var(--c-primary)}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-links a{
  position:relative;
  padding:8px 14px;
  font-size:15px;
  color:var(--c-ink);
  border-radius:10px;
}
.nav-links a:hover{color:var(--c-primary);background:var(--c-primary-soft)}
.nav-links a.active{color:var(--c-primary);font-weight:600}
.nav-links a.active::after{
  content:"";
  position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--c-primary);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.icon-btn{
  width:40px;height:40px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  color:var(--c-muted);
  border:1px solid transparent;
  transition:all .2s ease;
}
.icon-btn:hover{color:var(--c-primary);background:var(--c-primary-soft);border-color:rgba(15,111,224,.16)}
.menu-toggle{display:none;width:42px;height:42px;border-radius:12px;align-items:center;justify-content:center;color:var(--c-primary-deep);border:1px solid var(--c-line);background:#fff}
.menu-toggle:hover{background:var(--c-primary-soft);color:var(--c-primary)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  border:1px solid transparent;
  transition:transform .2s cubic-bezier(.2,.7,.3,1),background-color .2s ease,box-shadow .2s ease,border-color .2s ease,color .2s ease;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 18px rgba(15,111,224,.24)}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px)}
.btn-cta{background:var(--c-cta);color:#fff;box-shadow:0 6px 18px rgba(255,122,69,.28)}
.btn-cta:hover{background:var(--c-cta-dark);transform:translateY(-1px)}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-line)}
.btn-ghost:hover{border-color:var(--c-primary);background:#F2F7FE}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600;font-size:15px}
.text-link span{transition:transform .2s ease}
.text-link:hover span{transform:translateX(2px)}
.text-link:hover{text-decoration:underline}

/* ---------- hero ---------- */
.hero{
  position:relative;
  padding-top:88px;
  padding-bottom:72px;
  overflow:hidden;
  background:linear-gradient(160deg,#EAF3FF 0%,#F6F9FD 62%);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:repeating-linear-gradient(115deg,#0A2E5C 0 1px,transparent 1px 22px);
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;padding-top:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--c-line);
  color:var(--c-primary);font-size:13px;font-weight:600;
  box-shadow:0 2px 10px rgba(11,31,51,.05);
}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--c-accent);display:block}
.hero h1{font-size:40px;margin-top:20px;letter-spacing:.01em}
.hero-sub{margin-top:16px;font-size:17px;color:var(--c-muted);max-width:520px}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px}
.hero-metrics{
  margin-top:32px;display:flex;flex-wrap:wrap;gap:10px 22px;
  padding-top:20px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-muted);
}
.hero-metrics span{display:inline-flex;align-items:center;gap:8px}
.hero-metrics span::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--c-accent)}
.hero-art{position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--shadow-card);background:#fff}
.hero-art img{width:100%;aspect-ratio:16/11;object-fit:cover}
.hero-art::after{content:"";position:absolute;inset:0;background:rgba(255,255,255,.1);pointer-events:none}
.hero-art-tag{
  position:absolute;left:18px;bottom:18px;z-index:2;
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.94);
  color:var(--c-primary-deep);font-size:13px;font-weight:600;
  box-shadow:0 4px 16px rgba(11,31,51,.1);
}

/* ---------- sections ---------- */
.section{padding:96px 0}
.section-alt{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-title{font-size:26px}
.section-sub{margin-top:10px;font-size:15px;color:var(--c-muted);max-width:620px}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{display:flex;gap:16px;align-items:flex-start}
.step-num{
  flex-shrink:0;width:44px;height:44px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:2px solid var(--c-accent);color:var(--c-accent);
  font-weight:700;font-size:15px;
}
.step h3{font-size:19px;margin-bottom:8px}
.step p{font-size:14px;color:var(--c-muted);line-height:1.7}

/* ---------- proof grid ---------- */
.proof{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch}
.card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:transform .24s cubic-bezier(.2,.7,.3,1),box-shadow .24s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.proof-main{display:flex;flex-direction:column}
.proof-main img{width:100%;aspect-ratio:4/3;object-fit:cover}
.proof-main-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.proof-main-body h3{font-size:21px}
.proof-main-body p{font-size:15px;color:var(--c-muted)}
.proof-side{display:grid;gap:24px}
.proof-mini{display:grid;grid-template-columns:132px 1fr;align-items:stretch}
.proof-mini img{height:100%;width:100%;object-fit:cover}
.proof-mini-body{padding:18px 20px;display:flex;flex-direction:column;gap:8px;justify-content:center}
.proof-mini-body h3{font-size:17px}
.proof-mini-body p{font-size:13.5px;color:var(--c-muted)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:12px;font-weight:600;width:fit-content;
}
.badge-ok{background:rgba(18,179,154,.12);color:#0E907C}

/* ---------- version table ---------- */
.table-wrap{border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;background:#fff;box-shadow:var(--shadow-card)}
table{width:100%;border-collapse:collapse;font-size:14.5px;background:#fff}
thead th{background:#F2F6FB;color:var(--c-primary-deep);text-align:left;font-weight:600;padding:14px 20px;font-size:14px}
tbody td{padding:16px 20px;border-top:1px solid var(--c-line);color:var(--c-muted)}
tbody td:first-child{color:var(--c-ink);font-weight:600}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.news-card{position:relative;display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-card);transition:transform .24s cubic-bezier(.2,.7,.3,1),box-shadow .24s ease}
.news-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--c-primary),var(--c-accent));opacity:0;transition:opacity .24s ease;z-index:3}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.news-card:hover::before{opacity:1}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-title{font-size:18px}
.news-title a:hover{color:var(--c-primary)}
.news-sum{font-size:14px;color:var(--c-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:12px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-muted)}
.news-empty{padding:56px 24px;text-align:center;color:var(--c-muted);font-size:15px;background:#fff;border:1px dashed var(--c-line);border-radius:var(--r-card)}

/* ---------- faq ---------- */
.faq-list{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--shadow-card);overflow:hidden}
.faq-item{border-top:1px solid var(--c-line);position:relative}
.faq-item:first-child{border-top:0}
.faq-item summary{
  list-style:none;cursor:pointer;
  padding:20px 24px 20px 22px;
  font-size:16px;font-weight:600;color:var(--c-primary-deep);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  transition:background-color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:#F7FAFF}
.faq-item summary::after{
  content:"";flex-shrink:0;width:9px;height:9px;
  border-right:2px solid var(--c-primary);border-bottom:2px solid var(--c-primary);
  transform:rotate(45deg);transition:transform .24s ease;
}
.faq-item[open] summary::after{transform:rotate(-135deg)}
.faq-item[open] summary{color:var(--c-primary)}
.faq-item[open]{box-shadow:inset 3px 0 0 var(--c-primary)}
.faq-answer{padding:0 24px 22px 22px;font-size:14.5px;color:var(--c-muted);line-height:1.8}

/* ---------- cta ---------- */
.cta-band{background:#EAF3FF;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);padding:80px 0}
.cta-card{
  max-width:860px;margin:0 auto;background:#fff;border:1px solid var(--c-line);
  border-radius:20px;box-shadow:var(--shadow-hover);
  padding:48px 40px;text-align:center;
}
.cta-card h2{font-size:26px}
.cta-card p{margin-top:14px;font-size:15.5px;color:var(--c-muted)}
.cta-actions{margin-top:28px;display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:18px}

/* ---------- footer ---------- */
.site-footer{background:#F4F8FD;border-top:1px solid var(--c-line);padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand-name{font-size:17px;font-weight:700;color:var(--c-primary-deep)}
.footer-brand-name strong{color:var(--c-primary)}
.footer-desc{margin-top:14px;font-size:14px;color:var(--c-muted);max-width:320px}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--c-primary-deep)}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--c-muted)}
.footer-col a:hover{color:var(--c-primary)}
.footer-bottom{
  border-top:1px solid var(--c-line);
  padding-top:20px;padding-bottom:24px;
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:var(--c-muted);
}

/* ---------- drawer ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(10,46,92,.32);opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;z-index:70}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,84vw);z-index:80;
  background:#fff;box-shadow:-12px 0 40px rgba(11,31,51,.16);
  transform:translateX(100%);transition:transform .28s cubic-bezier(.2,.7,.3,1);
  display:flex;flex-direction:column;padding:22px 20px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-nav a{
  display:flex;align-items:center;height:48px;padding:0 12px;border-radius:12px;
  font-size:16px;color:var(--c-ink);
}
.drawer-nav a:hover,.drawer-nav a.active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600}
.drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--c-line)}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .24s cubic-bezier(.2,.7,.3,1),transform .24s cubic-bezier(.2,.7,.3,1)}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav-links,.header-actions .btn{display:none}
  .menu-toggle{display:flex}
  .header-inner{gap:16px}
  .hero{padding-top:72px;padding-bottom:56px}
  .hero-inner{grid-template-columns:1fr;gap:36px;padding-top:32px}
  .hero h1{font-size:32px}
  .hero-sub{font-size:16px;max-width:none}
  .hero-art{order:2}
  .section{padding:64px 0}
  .steps{grid-template-columns:1fr;gap:28px}
  .step{position:relative;padding-left:0}
  .proof{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:64px 0}
}
@media (max-width:640px){
  .container{padding-left:20px;padding-right:20px}
  .hero h1{font-size:26px;line-height:1.34}
  .hero-sub{font-size:15px}
  .hero-actions{gap:12px}
  .btn{width:100%}
  .hero-actions .btn,.cta-actions .btn{width:100%}
  .cta-actions{flex-direction:column;align-items:stretch}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .section-title{font-size:22px}
  .proof-mini{grid-template-columns:1fr}
  .proof-mini img{aspect-ratio:16/9;height:auto}
  .cta-card{padding:32px 22px}
  .cta-card h2{font-size:22px}
  .footer-grid{grid-template-columns:1fr}
  .faq-item summary{font-size:15px;padding:18px 18px 18px 20px}
  .faq-answer{padding:0 18px 20px 20px}
  table{font-size:13.5px}
  thead th,tbody td{padding:12px 14px}
}

/* roulang page: article */
:root{
  --c-primary:#0F6FE0;
  --c-primary-deep:#0A2E5C;
  --c-primary-soft:#E8F1FE;
  --c-accent:#12B39A;
  --c-cta:#FF7A45;
  --c-bg:#F6F9FD;
  --c-surface:#FFFFFF;
  --c-line:#E3EAF3;
  --c-ink:#0B1F33;
  --c-muted:#5B6B7C;
  --radius-card:16px;
  --radius-btn:12px;
  --shadow-card:0 6px 24px rgba(11,31,51,.08);
  --shadow-card-hover:0 12px 32px rgba(11,31,51,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono",Consolas,"Courier New",monospace;
}
*{box-sizing:border-box}
.site-body{
  margin:0;
  padding:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
.site-body img{max-width:100%;height:auto;display:block}
.site-body a{text-decoration:none;color:inherit}
.site-body button{font-family:inherit;cursor:pointer;border:none;background:none}
.site-body ul,.site-body ol{margin:0;padding:0;list-style:none}
.site-body h1,.site-body h2,.site-body h3,.site-body h4,.site-body p{margin:0}
:focus-visible{outline:3px solid rgba(15,111,224,.28);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;height:76px;
  background:rgba(255,255,255,.55);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(227,234,243,.7);
  box-shadow:0 4px 20px rgba(11,31,51,.06);
  transition:height .24s var(--ease),background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{height:64px;background:rgba(255,255,255,.94);box-shadow:0 10px 30px rgba(11,31,51,.1)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:100%}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{width:38px;height:38px;flex:0 0 38px;border-radius:12px;background:var(--c-primary-soft);display:flex;align-items:center;justify-content:center}
.brand-text{display:flex;flex-direction:column;line-height:1.2;min-width:0}
.brand-name{font-size:16px;font-weight:700;color:var(--c-primary-deep);letter-spacing:-.01em;white-space:nowrap}
.brand-name strong{color:var(--c-primary)}
.brand-sub{font-size:11px;color:var(--c-muted);letter-spacing:.04em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{position:relative;font-size:15px;color:var(--c-ink);padding:6px 0;transition:color .2s var(--ease)}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease)}
.nav-links a:hover{color:var(--c-primary)}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active{color:var(--c-primary);font-weight:600}
.header-actions{display:flex;align-items:center;gap:12px}
.icon-btn{width:40px;height:40px;border-radius:12px;border:1px solid var(--c-line);background:#fff;display:flex;align-items:center;justify-content:center;color:var(--c-muted);transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease)}
.icon-btn:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-1px)}
.mobile-toggle{display:none}
@media (max-width:1023px){
  .nav-links{display:none}
  .header-actions .btn-header{display:none}
  .mobile-toggle{display:flex}
  .brand-name{font-size:15px}
}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;white-space:nowrap;transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease)}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 18px rgba(15,111,224,.22)}
.btn-primary:hover{background:#0B5CC0;transform:translateY(-1px);box-shadow:0 10px 24px rgba(15,111,224,.28)}
.btn-cta{background:var(--c-cta);color:#fff;box-shadow:0 6px 18px rgba(255,122,69,.26)}
.btn-cta:hover{background:#F0642A;transform:translateY(-1px)}
.btn-secondary{background:#fff;color:var(--c-primary);border:1px solid var(--c-line)}
.btn-secondary:hover{border-color:var(--c-primary);background:#F2F7FE}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-size:15px;font-weight:600;transition:color .2s var(--ease)}
.text-link span{transition:transform .2s var(--ease)}
.text-link:hover{text-decoration:underline}
.text-link:hover span{transform:translateX(2px)}

/* ---------- Tags / badges ---------- */
.tag{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:var(--c-primary-soft);color:var(--c-primary);font-size:12px;font-weight:600;letter-spacing:.02em}
.tag-accent{background:rgba(18,179,154,.12);color:#0E8E7B}
.mono{font-family:var(--font-mono);letter-spacing:0}

/* ---------- Search panel ---------- */
.search-panel{position:fixed;top:76px;left:0;right:0;z-index:70;background:rgba(255,255,255,.97);border-bottom:1px solid var(--c-line);box-shadow:0 16px 40px rgba(11,31,51,.1);padding:16px 0;display:none}
.search-panel.is-open{display:block}
.search-form{display:flex;gap:12px}
.search-form input{flex:1;height:44px;border-radius:var(--radius-btn);border:1px solid var(--c-line);background:#fff;padding:0 16px;font-size:15px;color:var(--c-ink);font-family:inherit}
.search-form input::placeholder{color:#93A2B1}
.search-form input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(15,111,224,.18)}

/* ---------- Mobile drawer ---------- */
.mask{position:fixed;inset:0;background:rgba(11,31,51,.42);opacity:0;pointer-events:none;transition:opacity .28s var(--ease);z-index:90}
.mask.is-open{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);background:#fff;z-index:100;transform:translateX(102%);transition:transform .3s var(--ease);display:flex;flex-direction:column;padding:24px 22px;box-shadow:-14px 0 44px rgba(11,31,51,.16)}
.drawer.is-open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-title{font-size:15px;font-weight:700;color:var(--c-primary-deep)}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{height:48px;display:flex;align-items:center;font-size:15px;color:var(--c-ink);border-bottom:1px solid var(--c-line)}
.drawer-nav a.active{color:var(--c-primary);font-weight:600}
.drawer-foot{margin-top:auto;padding-top:20px}
.drawer-foot .btn{width:100%}

/* ---------- Article hero ---------- */
.article-hero{position:relative;padding-top:88px;padding-bottom:44px;background:linear-gradient(135deg,#EAF3FF 0%,#F6F9FD 100%);border-bottom:1px solid var(--c-line);overflow:hidden}
.article-hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(15,111,224,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(15,111,224,.05) 1px,transparent 1px);background-size:46px 46px;pointer-events:none}
.article-hero .container{position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--c-muted);margin-bottom:18px}
.breadcrumb a{color:var(--c-primary)}
.breadcrumb a:hover{text-decoration:underline}
.breadcrumb .sep{color:#B7C3D0}
.breadcrumb .current{color:var(--c-muted);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-title{font-size:32px;line-height:1.3;font-weight:800;color:var(--c-primary-deep);letter-spacing:-.01em;max-width:880px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px;margin-top:18px;font-size:14px;color:var(--c-muted)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C3D0DE}
.article-lead{margin-top:20px;max-width:780px;font-size:16px;line-height:1.8;color:var(--c-muted)}
@media (max-width:1023px){.article-hero{padding-top:72px}}
@media (max-width:639px){
  .article-title{font-size:26px;line-height:1.35}
  .article-hero{padding-bottom:32px}
}

/* ---------- Article layout ---------- */
.article-main{padding:48px 0 72px}
.article-shell{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;align-items:start}
.article-panel{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:28px 22px}
.article-cover{margin:0 0 26px}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px}
.article-cover figcaption{margin-top:10px;text-align:center;font-size:12px;line-height:1.6;color:var(--c-muted)}
.article-content{font-size:16px;line-height:1.8;color:var(--c-ink)}
.article-content p{margin:18px 0;font-size:16px;line-height:1.8;color:var(--c-ink)}
.article-content h2{position:relative;margin:40px 0 16px;padding-left:14px;font-size:26px;line-height:1.35;font-weight:700;color:var(--c-primary-deep)}
.article-content h2::before{content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;background:var(--c-primary)}
.article-content h3{margin:28px 0 12px;font-size:20px;line-height:1.4;font-weight:700;color:var(--c-primary-deep)}
.article-content ul,.article-content ol{margin:18px 0;padding-left:22px}
.article-content ul{list-style:disc}
.article-content ol{list-style:decimal}
.article-content li{margin:8px 0;font-size:16px;line-height:1.8}
.article-content ul li::marker,.article-content ol li::marker{color:var(--c-primary)}
.article-content blockquote{margin:22px 0;padding:16px 20px;background:var(--c-primary-soft);border-left:3px solid var(--c-primary);border-radius:0 12px 12px 0;color:var(--c-primary-deep);font-size:15px;line-height:1.8}
.article-content img{border-radius:12px;margin:22px auto}
.article-content a{color:var(--c-primary);text-decoration:underline}
.article-content a:hover{color:#0B5CC0}
.article-content table{width:100%;border-collapse:collapse;margin:22px 0;font-size:14px;background:#F2F6FB;border-radius:12px;overflow:hidden}
.article-content th,.article-content td{padding:12px 14px;border-bottom:1px solid var(--c-line);text-align:left;line-height:1.7}
.article-content th{background:#E8F1FE;color:var(--c-primary-deep);font-weight:700}
.article-content code{font-family:var(--font-mono);font-size:14px;background:#F2F6FB;padding:2px 6px;border-radius:6px;color:#0A4FA8}
.article-content pre{margin:22px 0;padding:16px;background:#F2F6FB;border:1px solid var(--c-line);border-radius:12px;overflow:auto;font-family:var(--font-mono);font-size:14px;line-height:1.7}

/* ---------- Empty state ---------- */
.empty-state{text-align:center;padding:36px 16px 44px}
.empty-state h2{font-size:22px;font-weight:700;color:var(--c-primary-deep);margin-bottom:12px}
.empty-state p{font-size:15px;color:var(--c-muted);max-width:520px;margin:0 auto 24px;line-height:1.8}

/* ---------- Side panel ---------- */
.article-side{display:none}
.side-card{position:sticky;top:96px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:22px 20px;margin-bottom:20px}
.side-card h2{font-size:17px;font-weight:700;color:var(--c-primary-deep);margin-bottom:14px}
.side-list li{display:flex;align-items:flex-start;gap:10px;padding:10px 0;border-bottom:1px dashed var(--c-line);font-size:14px;line-height:1.7;color:var(--c-muted)}
.side-list li:last-child{border-bottom:none}
.side-list .k{flex:0 0 76px;color:#8A98A7}
.side-list .v{color:var(--c-ink);word-break:break-all}
.side-links li{margin:8px 0}
.side-links a{font-size:14px;color:var(--c-primary);display:inline-flex;gap:6px;align-items:center}
.side-links a:hover{text-decoration:underline}
@media (min-width:1280px){
  .article-shell{grid-template-columns:minmax(0,1fr) 328px}
  .article-side{display:block}
}
@media (min-width:1024px){
  .article-panel{padding:40px 44px}
}

/* ---------- Related ---------- */
.related{margin-top:56px}
.section-head{margin-bottom:24px}
.section-title{font-size:22px;line-height:1.3;font-weight:700;color:var(--c-primary-deep)}
.section-sub{margin-top:8px;font-size:15px;color:var(--c-muted);line-height:1.8}
.related-grid{display:grid;grid-template-columns:1fr;gap:20px}
.rcard{position:relative;display:block;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);transition:transform .24s var(--ease),box-shadow .24s var(--ease)}
.rcard::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease)}
.rcard:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover)}
.rcard:hover::before{transform:scaleX(1)}
.rcard img{width:100%;aspect-ratio:16/9;object-fit:cover}
.rcard-body{padding:18px 18px 20px}
.rcard-body h3{font-size:17px;line-height:1.45;font-weight:700;color:var(--c-primary-deep);margin:10px 0 8px}
.rcard-body p{font-size:14px;line-height:1.7;color:var(--c-muted)}
.rcard-body .more{margin-top:14px;font-size:14px;font-weight:600;color:var(--c-primary)}
@media (min-width:640px){.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.related-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.related-foot{margin-top:28px;display:flex;flex-wrap:wrap;gap:12px}

/* ---------- CTA ---------- */
.cta-section{padding:0 0 88px}
.cta-wrap{background:linear-gradient(135deg,#EAF3FF 0%,#F6F9FD 100%);border:1px solid var(--c-line);border-radius:24px;padding:32px 20px}
.cta-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:32px 24px;text-align:center;max-width:760px;margin:0 auto}
.cta-card h2{font-size:26px;line-height:1.3;font-weight:800;color:var(--c-primary-deep)}
.cta-card p{margin-top:14px;font-size:16px;line-height:1.8;color:var(--c-muted)}
.cta-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
@media (max-width:639px){
  .cta-wrap{padding:20px 14px}
  .cta-card{padding:24px 18px}
  .cta-card h2{font-size:22px}
}

/* ---------- Footer ---------- */
.site-footer{background:#F4F8FD;border-top:1px solid var(--c-line);padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
.footer-brand-name{font-size:16px;font-weight:700;color:var(--c-primary-deep)}
.footer-brand-name strong{color:var(--c-primary)}
.footer-desc{margin-top:12px;font-size:14px;line-height:1.8;color:var(--c-muted);max-width:360px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--c-primary-deep);margin-bottom:14px}
.footer-col ul li{margin:9px 0}
.footer-col ul li a{font-size:14px;color:var(--c-muted);transition:color .2s var(--ease)}
.footer-col ul li a:hover{color:var(--c-primary)}
.footer-bottom{margin-top:44px;padding:20px 20px 28px;border-top:1px solid var(--c-line);display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px;color:#7C8B9A}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){
  .footer-grid{grid-template-columns:1.4fr repeat(3,minmax(0,1fr))}
  .footer-bottom{padding-left:32px;padding-right:32px}
}

/* ---------- Motion ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .24s var(--ease),transform .24s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{animation:none!important;transition:none!important}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --c-primary:#0F6FE0;
  --c-primary-deep:#0A2E5C;
  --c-primary-soft:#E8F1FE;
  --c-accent:#12B39A;
  --c-cta:#FF7A45;
  --c-bg:#F6F9FD;
  --c-surface:#FFFFFF;
  --c-line:#E3EAF3;
  --c-ink:#0B1F33;
  --c-muted:#5B6B7C;
  --shadow-card:0 6px 24px rgba(11,31,51,.08);
  --shadow-hover:0 12px 32px rgba(11,31,51,.12);
  --radius-card:16px;
  --radius-btn:12px;
  --radius-sm:12px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-mono:ui-monospace,"JetBrains Mono",SFMono-Regular,Menlo,Consolas,monospace;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px;}
html body{
  margin:0;
  padding:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.78;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:inherit;text-decoration:none;background:transparent;}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;}
ul,ol{margin:0;padding:0;}
h1,h2,h3,h4,p{margin:0;}
strong{font-weight:600;}
svg{display:block;}
:focus-visible{outline:3px solid rgba(15,111,224,.28);outline-offset:2px;border-radius:8px;}

/* ============ 容器与板块 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
.section{padding-top:56px;padding-bottom:56px;}
.section-head{max-width:760px;margin-bottom:32px;}
.section-head h2{
  font-size:clamp(22px,3vw,26px);
  line-height:1.32;
  font-weight:700;
  color:var(--c-primary-deep);
  letter-spacing:.01em;
}
.section-head p{margin-top:10px;font-size:15px;line-height:1.78;color:var(--c-muted);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:28px;padding:0 14px;margin-bottom:14px;
  border-radius:999px;background:var(--c-primary-soft);color:var(--c-primary);
  font-size:12px;font-weight:600;letter-spacing:.06em;line-height:1;
}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:0;}

/* ============ 按钮与文本链 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 8px 20px rgba(15,111,224,.22);}
.btn-primary:hover{background:#0B5CC0;transform:translateY(-1px);box-shadow:0 12px 26px rgba(15,111,224,.26);}
.btn-cta{background:var(--c-cta);color:#fff;box-shadow:0 8px 20px rgba(255,122,69,.26);}
.btn-cta:hover{background:#F0642A;transform:translateY(-1px);box-shadow:0 12px 26px rgba(240,100,42,.28);}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-line);}
.btn-ghost:hover{border-color:var(--c-primary);background:#F2F7FE;transform:translateY(-1px);}
.btn-sm{height:42px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--c-primary);
}
.text-link span{transition:transform .2s var(--ease);}
.text-link:hover{text-decoration:underline;}
.text-link:hover span{transform:translateX(2px);}

/* ============ 标签与徽章 ============ */
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;background:var(--c-primary-soft);color:var(--c-primary);
  font-size:12px;font-weight:600;line-height:1;
}
.tag-ok{background:rgba(18,179,154,.13);color:#0E8F7C;}
.tag-mono{font-family:var(--font-mono);font-weight:500;letter-spacing:0;}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(255,255,255,.6);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(227,234,243,.7);
  box-shadow:0 4px 20px rgba(11,31,51,.06);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.scrolled{background:rgba(255,255,255,.94);box-shadow:0 8px 26px rgba(11,31,51,.1);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:76px;transition:height .24s var(--ease);}
.site-header.scrolled .nav-inner{height:64px;}

.brand{display:flex;align-items:center;gap:10px;min-width:0;}
.brand-mark{
  flex:none;width:38px;height:38px;border-radius:11px;
  background:var(--c-primary-soft);display:flex;align-items:center;justify-content:center;
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{display:flex;flex-direction:column;line-height:1.24;min-width:0;}
.brand-text b{font-size:16px;font-weight:700;color:var(--c-primary-deep);white-space:nowrap;}
.brand-text em{font-style:normal;font-size:11px;color:var(--c-muted);white-space:nowrap;}

.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;
  border-radius:10px;font-size:15px;color:var(--c-ink);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-links a:hover{color:var(--c-primary);background:rgba(232,241,254,.85);}
.nav-links a.active{color:var(--c-primary);font-weight:600;}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--c-primary);
}

.nav-actions{display:flex;align-items:center;gap:10px;flex:none;}
.icon-btn{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--c-line);background:#fff;
  display:flex;align-items:center;justify-content:center;color:var(--c-muted);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{color:var(--c-primary);border-color:rgba(15,111,224,.4);background:#F2F7FE;}
.icon-btn svg{width:20px;height:20px;}
.menu-btn{display:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--c-line);background:#fff;align-items:center;justify-content:center;color:var(--c-ink);}
.menu-btn svg{width:20px;height:20px;}

/* 移动端抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,31,51,.36);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .28s var(--ease),visibility .28s var(--ease);
}
.drawer-mask.open{opacity:1;visibility:visible;}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:80;
  background:#fff;box-shadow:-12px 0 40px rgba(11,31,51,.18);
  padding:22px 20px 28px;display:flex;flex-direction:column;gap:8px;
  transform:translateX(102%);transition:transform .28s var(--ease);overflow-y:auto;
}
.nav-drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.drawer-head span{font-size:14px;font-weight:600;color:var(--c-primary-deep);}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--c-line);display:flex;align-items:center;justify-content:center;color:var(--c-muted);}
.drawer-close svg{width:18px;height:18px;}
.nav-drawer a{
  display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:12px;
  font-size:16px;color:var(--c-ink);border:1px solid transparent;
}
.nav-drawer a.active{color:var(--c-primary);background:var(--c-primary-soft);font-weight:600;}
.nav-drawer a:hover{background:#F2F7FE;color:var(--c-primary);}
.drawer-foot{margin-top:auto;padding-top:20px;}

/* ============ 页头 Hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding-top:124px;padding-bottom:56px;
  background:linear-gradient(160deg,#EAF3FF 0%,#F6F9FD 78%);
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(15,111,224,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(15,111,224,.05) 1px,transparent 1px);
  background-size:38px 38px;
}
.page-hero .container{position:relative;z-index:1;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--c-muted);margin-bottom:20px;}
.breadcrumb a{transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#C3D0E0;}
.breadcrumb .cur{color:var(--c-ink);font-weight:500;}
.hero-title{
  font-size:clamp(26px,4vw,34px);line-height:1.32;font-weight:700;
  color:var(--c-primary-deep);letter-spacing:.01em;max-width:820px;
}
.hero-lead{margin-top:14px;font-size:16px;line-height:1.78;color:var(--c-muted);max-width:680px;}
.hero-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 0;
  margin-top:26px;font-family:var(--font-mono);font-size:13px;color:var(--c-muted);
}
.hero-meta span{position:relative;padding-right:18px;margin-right:18px;line-height:1.6;}
.hero-meta span:last-child{padding-right:0;margin-right:0;}
.hero-meta span:not(:last-child)::after{
  content:"";position:absolute;right:0;top:50%;transform:translateY(-50%);
  width:4px;height:4px;border-radius:50%;background:#C3D0E0;
}

/* ============ 图文条目 ============ */
.entry-list{display:block;}
.entry{
  display:grid;grid-template-columns:1fr;gap:22px;align-items:center;
  padding:22px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  transition:box-shadow .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
}
.entry + .entry{margin-top:22px;}
.entry:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:rgba(15,111,224,.24);}
.entry-media{position:relative;overflow:hidden;border-radius:var(--radius-sm);}
.entry-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-sm);}
.entry-body{min-width:0;}
.entry-body h3{margin-top:14px;font-size:20px;line-height:1.4;font-weight:700;color:var(--c-primary-deep);}
.entry-body p{margin-top:10px;font-size:15px;line-height:1.8;color:var(--c-muted);}
.spec-list{
  display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;
  padding-top:16px;border-top:1px dashed var(--c-line);
}
.spec-item{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;
  border-radius:999px;border:1px solid var(--c-line);background:#FBFDFF;
  font-family:var(--font-mono);font-size:12px;color:var(--c-muted);
}
.entry-body .text-link{margin-top:18px;}

/* ============ 深色版本频道 ============ */
.channel-band{position:relative;overflow:hidden;background:var(--c-primary-deep);color:#fff;}
.band-bg{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  opacity:.16;pointer-events:none;
}
.channel-band .container{position:relative;z-index:1;}
.channel-band .eyebrow{background:rgba(255,255,255,.12);color:#BBD8FF;}
.channel-band .section-head h2{color:#fff;}
.channel-band .section-head p{color:rgba(255,255,255,.74);}
.channel-grid{display:grid;gap:20px;grid-template-columns:1fr;}
.channel-card{
  display:flex;flex-direction:column;gap:0;
  padding:22px;border-radius:var(--radius-card);
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);
  transition:background .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
}
.channel-card:hover{background:rgba(255,255,255,.13);transform:translateY(-2px);border-color:rgba(255,255,255,.28);}
.channel-card h3{font-size:17px;font-weight:600;color:#fff;line-height:1.4;}
.channel-card .chan-ver{
  margin-top:12px;font-family:var(--font-mono);font-size:22px;line-height:1.2;
  color:#fff;font-weight:600;
}
.channel-card dl{margin:16px 0 0;display:grid;gap:8px;}
.channel-card dl div{display:flex;justify-content:space-between;gap:12px;font-size:13px;line-height:1.7;}
.channel-card dt{color:rgba(255,255,255,.6);}
.channel-card dd{margin:0;font-family:var(--font-mono);color:rgba(255,255,255,.92);}
.channel-card .text-link{margin-top:18px;color:#9CC6FF;}
.channel-note{
  margin-top:28px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  font-family:var(--font-mono);font-size:12.5px;color:rgba(255,255,255,.6);line-height:1.8;
}

/* ============ 核对清单 ============ */
.check-layout{display:grid;grid-template-columns:1fr;gap:22px;}
.panel{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:24px;
}
.panel h3{font-size:18px;font-weight:700;color:var(--c-primary-deep);line-height:1.4;}
.panel .panel-sub{margin-top:8px;font-size:14px;color:var(--c-muted);line-height:1.75;}
.check-list{list-style:none;display:grid;gap:14px;margin-top:20px;}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;line-height:1.75;color:var(--c-ink);}
.check-icon{
  flex:none;width:22px;height:22px;margin-top:4px;border-radius:50%;
  background:rgba(18,179,154,.12);display:flex;align-items:center;justify-content:center;
}
.check-icon svg{width:14px;height:14px;stroke:var(--c-accent);stroke-width:2.2;fill:none;}
.verify-list{margin:18px 0 0;display:grid;gap:12px;}
.verify-list div{
  display:flex;justify-content:space-between;gap:14px;align-items:baseline;
  padding-bottom:12px;border-bottom:1px solid var(--c-line);
}
.verify-list div:last-child{border-bottom:0;padding-bottom:0;}
.verify-list dt{font-size:13px;color:var(--c-muted);flex:none;}
.verify-list dd{margin:0;font-family:var(--font-mono);font-size:13px;color:var(--c-ink);text-align:right;word-break:break-all;}
.verify-tip{margin-top:16px;font-size:13.5px;line-height:1.75;color:var(--c-muted);}
.verify-actions{margin-top:20px;}

/* ============ 继续查阅 ============ */
.next-grid{display:grid;grid-template-columns:1fr;gap:20px;}
.next-card{
  display:flex;align-items:center;gap:18px;
  padding:20px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  transition:box-shadow .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
}
.next-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:rgba(15,111,224,.24);}
.next-thumb{flex:none;width:96px;height:72px;border-radius:12px;overflow:hidden;}
.next-thumb img{width:100%;height:100%;object-fit:cover;}
.next-body{min-width:0;}
.next-body h3{font-size:16.5px;font-weight:700;color:var(--c-primary-deep);line-height:1.42;}
.next-body p{margin-top:6px;font-size:14px;line-height:1.72;color:var(--c-muted);}
.next-arrow{flex:none;margin-left:auto;color:var(--c-primary);transition:transform .2s var(--ease);}
.next-arrow svg{width:20px;height:20px;stroke:var(--c-primary);stroke-width:1.8;fill:none;}
.next-card:hover .next-arrow{transform:translateX(3px);}

/* ============ CTA ============ */
.cta-section{padding:56px 0 64px;}
.cta-shell{
  background:linear-gradient(160deg,#EAF3FF 0%,#F6F9FD 92%);
  border:1px solid var(--c-line);border-radius:24px;padding:26px 20px;
}
.cta-card{
  max-width:760px;margin:0 auto;background:#fff;border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:32px 24px;text-align:center;
}
.cta-card h2{font-size:clamp(21px,2.8vw,25px);line-height:1.34;font-weight:700;color:var(--c-primary-deep);}
.cta-card p{margin-top:12px;font-size:15px;line-height:1.78;color:var(--c-muted);}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:26px;}
.cta-foot{margin-top:18px;font-family:var(--font-mono);font-size:12.5px;color:var(--c-muted);}

/* ============ 页脚 ============ */
.site-footer{margin-top:0;padding-top:56px;background:#F4F8FD;border-top:1px solid var(--c-line);}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
.footer-brand-name{font-size:18px;font-weight:600;color:var(--c-primary-deep);line-height:1.5;}
.footer-brand-name strong{font-weight:700;}
.footer-desc{margin-top:12px;max-width:360px;font-size:14px;line-height:1.8;color:var(--c-muted);}
.footer-col h4{margin:0 0 14px;font-size:14px;font-weight:600;color:var(--c-primary-deep);}
.footer-col ul{list-style:none;display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--c-muted);transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--c-primary);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;
  margin-top:40px;padding-top:22px;padding-bottom:26px;
  border-top:1px solid var(--c-line);font-size:13px;line-height:1.7;color:var(--c-muted);
}

/* ============ 响应式断点 ============ */
@media (min-width:640px){
  .container{padding-left:24px;padding-right:24px;}
  .entry{grid-template-columns:1fr;padding:24px;}
  .channel-grid{grid-template-columns:repeat(2,1fr);}
  .check-list{grid-template-columns:1fr 1fr;}
  .next-grid{grid-template-columns:1fr 1fr;}
  .cta-shell{padding:34px 28px;}
  .cta-card{padding:40px 36px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (min-width:1024px){
  .container{padding-left:32px;padding-right:32px;}
  .section{padding-top:96px;padding-bottom:96px;}
  .page-hero{padding-top:132px;padding-bottom:72px;}
  .entry{grid-template-columns:1fr 1fr;gap:40px;padding:28px;}
  .entry--reverse .entry-media{order:2;}
  .channel-grid{grid-template-columns:repeat(4,1fr);}
  .check-layout{grid-template-columns:1.6fr 1fr;gap:28px;}
  .check-list{grid-template-columns:1fr 1fr;}
  .panel{padding:28px;}
  .footer-grid{grid-template-columns:1.7fr 1fr 1fr 1fr;gap:36px;}
  .icon-btn{display:flex;}
}
@media (min-width:1280px){
  .container{max-width:1200px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .menu-btn{display:flex;}
  .nav-actions .btn-cta{display:none;}
  .brand-text em{display:none;}
}
@media (max-width:639px){
  .hero-title{font-size:26px;line-height:1.36;}
  .entry-body h3{font-size:18px;}
  .next-card{flex-direction:column;align-items:flex-start;}
  .next-thumb{width:100%;height:150px;}
  .next-arrow{display:none;}
  .cta-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* ============ 动效偏好 ============ */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
}

/* roulang page: category2 */
:root{
  --c-primary:#0F6FE0;
  --c-primary-deep:#0A2E5C;
  --c-primary-soft:#E8F1FE;
  --c-accent:#12B39A;
  --c-cta:#FF7A45;
  --c-bg:#F6F9FD;
  --c-surface:#FFFFFF;
  --c-line:#E3EAF3;
  --c-ink:#0B1F33;
  --c-muted:#5B6B7C;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-pill:999px;
  --shadow-card:0 6px 24px rgba(11,31,51,.08);
  --shadow-card-hover:0 12px 32px rgba(11,31,51,.12);
  --shadow-nav:0 4px 20px rgba(11,31,51,.06);
  --focus-ring:0 0 0 3px rgba(15,111,224,.28);
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--c-primary);text-decoration:none;}
a:hover{text-decoration:none;}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.3;color:var(--c-primary-deep);font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:none;box-shadow:var(--focus-ring);border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.container{padding:0 32px;}}
.section{padding:56px 0;}
@media (min-width:1024px){.section{padding:96px 0;}}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.2px;}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(255,255,255,.55);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(227,234,243,.7);
  box-shadow:var(--shadow-nav);
  transition:background .24s cubic-bezier(.2,.7,.3,1),box-shadow .24s cubic-bezier(.2,.7,.3,1);
}
.site-header.scrolled{
  background:rgba(255,255,255,.94);
  box-shadow:0 8px 28px rgba(11,31,51,.1);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  height:76px;transition:height .24s cubic-bezier(.2,.7,.3,1);
}
.site-header.scrolled .header-inner{height:64px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-ink);min-width:0;}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;
  background:var(--c-primary-soft);
  display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(15,111,224,.16);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;min-width:0;}
.brand-text strong{font-size:17px;font-weight:800;color:var(--c-primary-deep);letter-spacing:.2px;}
.brand-text small{font-size:11px;color:var(--c-muted);letter-spacing:.4px;white-space:nowrap;}
.nav-links{display:none;align-items:center;gap:8px;}
@media (min-width:1025px){.nav-links{display:flex;}}
.nav-links a{
  position:relative;display:inline-block;
  padding:10px 14px;font-size:15px;color:var(--c-ink);border-radius:10px;
  transition:color .2s ease,background-color .2s ease;
}
.nav-links a:hover{color:var(--c-primary);background:var(--c-primary-soft);}
.nav-links a.active{color:var(--c-primary);font-weight:600;}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--c-primary);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:40px;height:40px;display:none;align-items:center;justify-content:center;
  border:1px solid var(--c-line);border-radius:12px;background:var(--c-surface);
  color:var(--c-muted);cursor:pointer;transition:all .2s ease;
}
@media (min-width:1025px){.icon-btn{display:inline-flex;}}
.icon-btn:hover{color:var(--c-primary);border-color:rgba(15,111,224,.4);background:#F2F7FE;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:var(--radius-btn);
  padding:11px 20px;font-size:15px;font-weight:600;cursor:pointer;
  transition:transform .2s cubic-bezier(.2,.7,.3,1),background-color .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 18px rgba(15,111,224,.22);}
.btn-primary:hover{background:#0B5CC0;transform:translateY(-1px);}
.btn-cta{background:var(--c-cta);color:#fff;box-shadow:0 8px 20px rgba(255,122,69,.26);}
.btn-cta:hover{background:#F0642A;transform:translateY(-1px);}
.btn-ghost{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-line);}
.btn-ghost:hover{border-color:var(--c-primary);background:#F2F7FE;}
.btn-sm{padding:9px 16px;font-size:14px;}
.header-cta{display:none;}
@media (min-width:1025px){.header-cta{display:inline-flex;}}
.burger{
  display:inline-flex;width:40px;height:40px;align-items:center;justify-content:center;
  border:1px solid var(--c-line);border-radius:12px;background:var(--c-surface);
  color:var(--c-ink);cursor:pointer;
}
@media (min-width:1025px){.burger{display:none;}}

.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:80;
  background:#fff;border-left:1px solid var(--c-line);
  transform:translateX(102%);transition:transform .28s cubic-bezier(.2,.7,.3,1);
  display:flex;flex-direction:column;padding:20px;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.drawer-title{font-size:14px;color:var(--c-muted);}
.drawer .nav-links{display:flex;flex-direction:column;align-items:stretch;gap:2px;}
.drawer .nav-links a{display:block;line-height:48px;padding:0 12px;font-size:16px;border-radius:10px;}
.drawer .nav-links a.active::after{display:none;}
.drawer .nav-links a.active{background:var(--c-primary-soft);}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,31,51,.35);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;
}
.drawer-mask.show{opacity:1;visibility:visible;}

/* ============ 面包屑 ============ */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);}
.crumbs a{color:var(--c-muted);}
.crumbs a:hover{color:var(--c-primary);}
.crumbs .sep{color:#A9B6C4;}

/* ============ 分类页 Hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding-top:118px;padding-bottom:52px;
  background:linear-gradient(160deg,#EAF3FF 0%,#F6F9FD 62%);
  border-bottom:1px solid var(--c-line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(135deg,rgba(15,111,224,.05) 0 1px,transparent 1px 22px);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1;}
.page-hero h1{font-size:28px;margin:16px 0 14px;max-width:900px;}
@media (min-width:640px){.page-hero h1{font-size:32px;line-height:1.28;}}
@media (min-width:1024px){.page-hero{padding-top:150px;padding-bottom:64px;}.page-hero h1{font-size:38px;}}
.hero-lead{font-size:16px;color:var(--c-muted);max-width:760px;}
.hero-metrics{
  margin-top:22px;display:flex;flex-wrap:wrap;gap:8px 20px;
  font-family:var(--font-mono);font-size:13px;color:var(--c-primary-deep);
}
.hero-metrics span{display:inline-flex;align-items:center;gap:8px;}
.hero-metrics .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);display:inline-block;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:600;letter-spacing:.2px;
  background:var(--c-primary-soft);color:var(--c-primary);
}
.badge-ok{background:rgba(18,179,154,.12);color:#0E8F7C;}

/* ============ 主区：sticky 摘要卡 + 条目列表 ============ */
.layout-grid{display:grid;grid-template-columns:1fr;gap:28px;}
@media (min-width:1025px){
  .layout-grid{grid-template-columns:320px 1fr;gap:32px;align-items:start;}
}
.summary-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:24px;
}
@media (min-width:1025px){
  .summary-sticky{position:sticky;top:96px;}
}
.summary-title{font-size:18px;margin-bottom:6px;}
.summary-note{font-size:14px;color:var(--c-muted);}
.summary-stat{
  display:flex;align-items:baseline;gap:10px;
  margin:18px 0 16px;padding:16px;border-radius:12px;background:var(--c-primary-soft);
}
.summary-stat b{font-family:var(--font-mono);font-size:30px;color:var(--c-primary);line-height:1;}
.summary-stat span{font-size:13px;color:var(--c-primary-deep);}
.summary-list{display:flex;flex-direction:column;gap:10px;padding:16px 0;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.summary-list li{display:flex;gap:10px;font-size:14px;color:var(--c-ink);}
.summary-list .tick{flex:0 0 18px;margin-top:4px;}
.summary-meta{margin-top:16px;font-family:var(--font-mono);font-size:12px;color:var(--c-muted);line-height:1.9;}
.summary-actions{margin-top:18px;display:flex;flex-direction:column;gap:10px;}

.entry-list{display:flex;flex-direction:column;gap:16px;}
.entry-card{
  position:relative;display:flex;gap:16px;align-items:center;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:16px;
  transition:transform .24s cubic-bezier(.2,.7,.3,1),box-shadow .24s ease;
}
.entry-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  border-radius:var(--radius-card) var(--radius-card) 0 0;
  background:linear-gradient(90deg,var(--c-primary),rgba(15,111,224,0));
  opacity:0;transition:opacity .24s ease;
}
.entry-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);}
.entry-card:hover::before{opacity:1;}
.entry-thumb{
  flex:0 0 108px;width:108px;border-radius:12px;overflow:hidden;
  border:1px solid var(--c-line);background:#EFF4FA;
}
.entry-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.entry-body{min-width:0;flex:1;}
.entry-index{font-family:var(--font-mono);font-size:12px;color:var(--c-accent);font-weight:600;}
.entry-body h3{font-size:17px;margin:4px 0 6px;}
.entry-body p{font-size:14px;color:var(--c-muted);line-height:1.7;}
.entry-arrow{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--c-primary);font-weight:600;white-space:nowrap;
}
.entry-card:hover .entry-arrow svg{transform:translateX(2px);}
.entry-arrow svg{transition:transform .2s ease;}
@media (max-width:639px){
  .entry-card{flex-direction:column;align-items:flex-start;}
  .entry-thumb{width:100%;flex:1 1 auto;}
  .entry-body h3{font-size:16px;}
  .entry-arrow{margin-top:4px;}
}

/* ============ 区块标题 ============ */
.sec-head{max-width:760px;margin-bottom:32px;}
.sec-head h2{font-size:22px;}
@media (min-width:1024px){.sec-head h2{font-size:26px;}}
.sec-head p{margin-top:12px;color:var(--c-muted);font-size:15px;}
.eyebrow{
  display:inline-block;margin-bottom:12px;font-family:var(--font-mono);
  font-size:12px;letter-spacing:2px;color:var(--c-primary);text-transform:uppercase;
}

/* ============ 提示条 ============ */
.tips-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:24px;
}
.tips-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:640px){.tips-grid{grid-template-columns:1fr 1fr;}}
@media (min-width:1025px){.tips-grid{grid-template-columns:repeat(3,1fr);}}
.tip-item{display:flex;gap:12px;}
.tip-icon{
  flex:0 0 40px;width:40px;height:40px;border-radius:12px;
  background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
}
.tip-item h3{font-size:16px;margin-bottom:4px;}
.tip-item p{font-size:14px;color:var(--c-muted);line-height:1.7;}

/* ============ FAQ ============ */
.faq-list{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--c-line);position:relative;}
.faq-item:last-child{border-bottom:none;}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px 18px 24px;
  font-size:16px;font-weight:600;color:var(--c-primary-deep);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  transition:background-color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:#F7FAFE;}
.faq-item summary .chev{
  flex:0 0 20px;color:var(--c-primary);transition:transform .24s cubic-bezier(.2,.7,.3,1);
}
.faq-item[open] summary::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--c-primary);
}
.faq-item[open] summary .chev{transform:rotate(180deg);}
.faq-body{padding:0 22px 20px 24px;font-size:14px;color:var(--c-muted);line-height:1.8;}

/* ============ 内链区 ============ */
.link-strip{
  display:grid;grid-template-columns:1fr;gap:16px;
}
@media (min-width:768px){.link-strip{grid-template-columns:1fr 1fr;}}
.link-box{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:20px 22px;
  transition:transform .24s cubic-bezier(.2,.7,.3,1),box-shadow .24s ease,border-color .2s ease;
}
.link-box:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);border-color:rgba(15,111,224,.35);}
.link-box strong{display:block;font-size:16px;color:var(--c-primary-deep);}
.link-box span{display:block;margin-top:4px;font-size:13px;color:var(--c-muted);}

/* ============ CTA ============ */
.cta-wrap{
  background:linear-gradient(180deg,#EDF4FE 0%,#F6F9FD 100%);
  border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
}
.cta-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:20px;
  box-shadow:var(--shadow-card);padding:32px 24px;text-align:center;
}
@media (min-width:1024px){.cta-card{padding:48px 56px;}}
.cta-card h2{font-size:22px;}
@media (min-width:1024px){.cta-card h2{font-size:28px;}}
.cta-card p{margin:14px auto 0;max-width:620px;color:var(--c-muted);font-size:15px;}
.cta-actions{margin-top:26px;display:flex;flex-direction:column;gap:12px;align-items:center;}
@media (min-width:640px){.cta-actions{flex-direction:row;justify-content:center;}}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);
}
.text-link svg{transition:transform .2s ease;}
.text-link:hover{text-decoration:underline;}
.text-link:hover svg{transform:translateX(2px);}

/* ============ 页脚 ============ */
.site-footer{background:#F4F8FD;border-top:1px solid var(--c-line);padding:56px 0 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:1025px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:28px;}}
.footer-brand-name{font-size:18px;color:var(--c-primary-deep);font-weight:700;}
.footer-brand-name strong{color:var(--c-primary);}
.footer-desc{margin-top:12px;font-size:14px;color:var(--c-muted);line-height:1.8;max-width:360px;}
.footer-col h4{font-size:15px;margin-bottom:14px;color:var(--c-primary-deep);}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--c-muted);transition:color .2s ease;}
.footer-col a:hover{color:var(--c-primary);}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--c-line);
  display:flex;flex-direction:column;gap:8px;
  font-size:12px;color:var(--c-muted);line-height:1.8;
}
@media (min-width:1025px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between;}}

/* ============ 进场动效 ============ */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .24s cubic-bezier(.2,.7,.3,1),transform .24s cubic-bezier(.2,.7,.3,1);}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}