/* roulang page: index */
:root{
  --brand:#1F5FD0;
  --brand-ink:#123A82;
  --accent:#2FA3A0;
  --warn:#F2A24B;
  --bg:#F6F8FB;
  --surface:#FFFFFF;
  --surface-2:#EEF3FA;
  --line:#E4E9F2;
  --line-strong:#CFE0FA;
  --text:#1B2534;
  --text-2:#5B6779;
  --radius-card:18px;
  --radius-img:16px;
  --radius-btn:12px;
  --shadow-1:0 1px 2px rgba(19,38,74,.06);
  --shadow-2:0 12px 32px -12px rgba(19,38,74,.18);
  --shadow-3:0 24px 60px -24px rgba(19,38,74,.28);
  --font-cn:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease;}
a:hover{color:var(--brand);text-decoration:underline;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.01em;color:var(--text);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  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(255,255,255,.6);
  box-shadow:var(--shadow-1);
  transition:height .25s ease,background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{height:64px;background:rgba(255,255,255,.95);box-shadow:var(--shadow-2);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:100%;}
.brand{display:inline-flex;align-items:center;gap:10px;white-space:nowrap;font-weight:700;font-size:18px;color:var(--brand-ink);}
.brand:hover{color:var(--brand-ink);text-decoration:none;}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;display:grid;place-items:center;font-size:15px;box-shadow:var(--shadow-1);}
.main-nav{display:flex;align-items:center;gap:2px;}
.nav-link{position:relative;padding:8px 10px;border-radius:10px;font-size:14.5px;color:var(--text);white-space:nowrap;}
.nav-link:hover{color:var(--brand);background:#F2F6FF;text-decoration:none;}
.nav-link.is-active{color:var(--brand-ink);font-weight:600;}
.nav-link.is-active::after{content:"";position:absolute;left:10px;right:10px;bottom:2px;height:2px;border-radius:2px;background:var(--brand);}
.header-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--brand-ink);align-items:center;justify-content:center;font-size:17px;cursor:pointer;}
.nav-toggle:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.nav-mask{position:fixed;inset:0;background:rgba(19,38,74,.35);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:990;}
.nav-mask.is-open{opacity:1;visibility:visible;}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;}
.btn:hover{text-decoration:none;}
.btn.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1);}
.btn.btn-primary:hover{background:var(--brand-ink);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn.btn-ghost{background:#fff;border-color:var(--line);color:var(--brand-ink);}
.btn.btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:#F2F6FF;}
.btn.btn-lg{padding:14px 28px;font-size:16px;}
.btn-sm-cta{padding:8px 16px;font-size:14px;}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

/* ============ 徽章 / 标签 ============ */
.badge-tag{display:inline-block;padding:3px 10px;border-radius:999px;background:rgba(47,163,160,.12);color:#1E6F6C;font-size:12px;letter-spacing:.02em;font-weight:600;}
.badge-warn{background:rgba(242,162,75,.18);color:#8F530F;}

/* ============ Hero ============ */
.hero{position:relative;padding:146px 0 56px;min-height:78vh;overflow:hidden;background:linear-gradient(180deg,#F2F6FF 0%,var(--bg) 62%);}
.hero::after{content:"";position:absolute;right:-140px;top:-120px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(47,163,160,.16),rgba(47,163,160,0) 68%);pointer-events:none;}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:rgba(31,95,208,.1);color:var(--brand-ink);font-size:13px;font-weight:600;letter-spacing:.02em;margin-bottom:18px;}
.hero h1{font-size:clamp(28px,4.4vw,46px);line-height:1.25;font-weight:700;margin-bottom:16px;}
.hero-sub{font-size:17px;color:var(--text-2);max-width:520px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;}
.hero-badges li{display:inline-flex;align-items:center;gap:7px;padding:7px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--text-2);font-size:13.5px;box-shadow:var(--shadow-1);}
.hero-badges li i{color:var(--accent);}
.hero-media{position:relative;}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img);box-shadow:var(--shadow-3);background:var(--surface-2);}
.hero-anchors{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:10px;margin-top:52px;padding:12px;background:var(--surface);border:1px solid var(--line);border-radius:999px;box-shadow:var(--shadow-1);}
.pill{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;border-radius:999px;background:var(--surface-2);color:var(--brand-ink);font-size:14px;font-weight:600;transition:background-color .18s ease,color .18s ease,box-shadow .18s ease;}
.pill:hover{background:#F2F6FF;color:var(--brand);text-decoration:none;box-shadow:var(--shadow-1);}
.pill.is-active{background:var(--brand);color:#fff;}
.pill.is-active:hover{color:#fff;}

/* ============ 区块 ============ */
.section{padding:88px 0;}
.section-alt{background:var(--surface);}
.section-head{max-width:760px;margin-bottom:42px;}
.section-head .eyebrow{display:inline-block;font-size:12px;letter-spacing:.1em;color:var(--accent);font-weight:700;margin-bottom:10px;}
.section-head h2{font-size:clamp(22px,3vw,32px);line-height:1.35;margin-bottom:12px;}
.section-head p{color:var(--text-2);font-size:16px;}

/* ============ 卡片 ============ */
.card-soft{display:flex;flex-direction:column;height:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:26px;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
.card-soft:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--line-strong);}
.card-icon{width:46px;height:46px;border-radius:12px;background:rgba(47,163,160,.13);color:#1E6F6C;display:grid;place-items:center;font-size:18px;margin-bottom:16px;}
.card-soft h3{font-size:18px;margin-bottom:8px;}
.card-soft p{color:var(--text-2);font-size:15px;}
.card-link{display:inline-flex;align-items:center;gap:6px;margin-top:auto;padding-top:16px;color:var(--brand);font-size:14px;font-weight:600;}
.card-link:hover{color:var(--brand-ink);}

/* ============ 栏目图卡 ============ */
.channel-card{display:flex;flex-direction:column;height:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
.channel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--line-strong);}
.channel-thumb{aspect-ratio:16/10;background:var(--surface-2);overflow:hidden;}
.channel-thumb img{width:100%;height:100%;object-fit:cover;}
.channel-body{display:flex;flex-direction:column;flex:1;padding:22px;}
.channel-body h3{font-size:18px;margin:12px 0 8px;}
.channel-body p{color:var(--text-2);font-size:15px;}

/* ============ 步骤 ============ */
.step-list{counter-reset:step;}
.step-item{position:relative;padding-left:58px;padding-bottom:26px;}
.step-item:last-child{padding-bottom:0;}
.step-item::before{counter-increment:step;content:counter(step,decimal-leading-zero);position:absolute;left:0;top:2px;width:38px;height:38px;border-radius:50%;background:rgba(47,163,160,.14);color:#1E6F6C;display:grid;place-items:center;font-weight:700;font-size:13px;font-family:Inter,sans-serif;}
.step-item::after{content:"";position:absolute;left:19px;top:46px;bottom:8px;width:2px;background:var(--line);}
.step-item:last-child::after{display:none;}
.step-item h3{font-size:17px;margin-bottom:6px;}
.step-item p{color:var(--text-2);font-size:15px;}
.demo-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img);box-shadow:var(--shadow-2);background:var(--surface-2);}

/* ============ 数据卡 ============ */
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px 20px;text-align:center;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease;}
.stat:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.stat strong{display:block;font-family:Inter,"Noto Sans SC",sans-serif;font-size:34px;font-weight:700;line-height:1.2;color:var(--brand);}
.stat span{display:block;margin-top:6px;font-size:14px;color:var(--text-2);}

/* ============ 横向列表条目 ============ */
.list-row{display:flex;gap:20px;align-items:center;padding:18px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
.list-row:hover{transform:translateX(2px);box-shadow:var(--shadow-2);border-color:var(--line-strong);}
.list-thumb{flex:0 0 128px;width:128px;aspect-ratio:16/10;border-radius:var(--radius-img);overflow:hidden;background:var(--surface-2);}
.list-thumb img{width:100%;height:100%;object-fit:cover;}
.list-body h3{font-size:17px;margin-bottom:6px;}
.list-body p{color:var(--text-2);font-size:14.5px;}
.list-meta{margin-top:8px;font-size:13px;color:var(--text-2);display:flex;flex-wrap:wrap;gap:12px;}

/* ============ 价格 ============ */
.price-card{position:relative;display:flex;flex-direction:column;height:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:30px 26px;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
.price-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--line-strong);}
.price-card.is-featured{border-color:var(--line-strong);box-shadow:var(--shadow-3);}
.price-flag{position:absolute;top:-13px;left:26px;background:var(--warn);color:#5C3A0E;font-size:12px;font-weight:700;padding:4px 12px;border-radius:999px;letter-spacing:.02em;}
.price-name{font-size:17px;font-weight:700;margin-bottom:6px;}
.price-desc{color:var(--text-2);font-size:14.5px;margin-bottom:18px;}
.price-value{font-family:Inter,"Noto Sans SC",sans-serif;font-size:32px;font-weight:700;color:var(--brand-ink);line-height:1.2;}
.price-unit{font-size:14px;color:var(--text-2);margin-bottom:20px;}
.price-feats{margin-bottom:24px;}
.price-feats li{display:flex;gap:10px;align-items:flex-start;padding:6px 0;font-size:14.5px;color:var(--text-2);}
.price-feats li i{color:var(--accent);margin-top:5px;font-size:13px;}
.price-card .btn{margin-top:auto;width:100%;}

/* ============ 资讯列表（CMS 区） ============ */
.news-list{display:flex;flex-direction:column;gap:14px;}
.news-card{display:flex;flex-direction:column;gap:10px;padding:22px 24px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--line-strong);text-decoration:none;}
.news-card h3{font-size:17.5px;line-height:1.45;}
.news-card p{color:var(--text-2);font-size:15px;}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13px;color:var(--text-2);}
.news-meta time{font-family:Inter,"Noto Sans SC",sans-serif;}
.news-more{margin-top:28px;text-align:center;}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;min-height:200px;padding:30px;background:var(--surface-2);border:1px dashed var(--line);border-radius:var(--radius-card);text-align:center;}
.empty-state i{font-size:26px;color:var(--text-2);}
.empty-state p{color:var(--text-2);font-size:15px;}
.empty-actions{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:box-shadow .2s ease,border-color .2s ease;}
.faq-item[open]{box-shadow:inset 3px 0 0 var(--brand),var(--shadow-1);border-color:var(--line-strong);}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:18px 22px;cursor:pointer;list-style:none;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-q{margin:0;font-size:16px;font-weight:600;color:var(--text);}
.faq-item summary::after{content:"+";flex:0 0 auto;color:var(--brand);font-size:20px;line-height:1;transition:transform .22s ease;}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-body{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--text-2);}

/* ============ CTA 条 ============ */
.cta-band{background:var(--surface);padding:76px 0;}
.cta-panel{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;padding:38px 40px;border-radius:var(--radius-card);background:var(--surface-2);border:1px solid var(--line);}
.cta-panel h2{font-size:clamp(20px,2.4vw,26px);margin-bottom:8px;}
.cta-panel p{color:var(--text-2);font-size:15px;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--surface-2);border-top:1px solid var(--line);padding-top:64px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.6fr;gap:34px;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--brand-ink);white-space:nowrap;margin-bottom:14px;}
.footer-brand:hover{color:var(--brand-ink);text-decoration:none;}
.footer-intro{color:var(--text-2);font-size:14px;max-width:320px;}
.footer-title{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--text);}
.footer-links a{display:block;padding:5px 0;color:var(--text-2);font-size:14px;}
.footer-links a:hover{color:var(--brand);}
.form-field{margin-bottom:14px;}
.form-field label{display:block;font-size:14px;font-weight:600;margin-bottom:6px;color:var(--text);}
.form-field input,.form-field textarea{width:100%;min-height:46px;padding:10px 14px;border:1px solid var(--line);border-radius:12px;background:#fff;font-size:15px;color:var(--text);font-family:inherit;transition:border-color .18s ease,box-shadow .18s ease;}
.form-field textarea{min-height:88px;resize:vertical;}
.form-field input:focus,.form-field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(31,95,208,.12);}
.form-hint{font-size:13px;color:var(--text-2);margin-top:8px;}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;margin-top:52px;padding:20px 0;border-top:1px solid var(--line);font-size:13px;color:var(--text-2);}

/* ============ 浮动 CTA ============ */
.float-cta{position:fixed;right:20px;bottom:20px;z-index:950;display:inline-flex;align-items:center;gap:9px;padding:13px 22px;border-radius:999px;background:var(--brand);color:#fff;font-size:15px;font-weight:600;box-shadow:var(--shadow-3);opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity .2s ease,transform .2s ease,visibility .2s ease,background-color .2s ease;}
.float-cta.is-visible{opacity:1;visibility:visible;transform:none;}
.float-cta:hover{background:var(--brand-ink);color:#fff;text-decoration:none;}
.float-cta:focus-visible{outline:2px solid var(--brand-ink);outline-offset:3px;}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .nav-link{font-size:13.5px;padding:8px 7px;}
  .nav-link.is-active::after{left:7px;right:7px;}
  .brand{font-size:17px;}
}
@media (max-width:991.98px){
  .site-header{height:68px;}
  .nav-toggle{display:inline-flex;}
  .main-nav{position:fixed;top:0;right:0;width:290px;max-width:82vw;height:100vh;flex-direction:column;align-items:stretch;gap:6px;padding:88px 20px 28px;background:#fff;box-shadow:-14px 0 44px -22px rgba(19,38,74,.4);transform:translateX(102%);transition:transform .28s ease;overflow-y:auto;z-index:995;}
  .main-nav.is-open{transform:translateX(0);}
  .nav-link{padding:13px 14px;font-size:15px;border-radius:12px;}
  .nav-link.is-active{background:var(--surface-2);}
  .nav-link.is-active::after{display:none;}
  .hero{padding:118px 0 48px;min-height:auto;}
  .hero-inner{grid-template-columns:1fr;gap:34px;}
  .hero-media{order:-1;}
  .hero-sub{max-width:none;}
  .hero-anchors{margin-top:36px;border-radius:20px;}
  .section{padding:72px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:767.98px){
  .container{padding-left:16px;padding-right:16px;}
  .section{padding:56px 0;}
  .hero{padding:104px 0 40px;}
  .hero h1{font-size:28px;}
  .hero-actions .btn{flex:1 1 auto;}
  .hero-badges li{font-size:13px;}
  .hero-anchors{gap:8px;padding:10px;border-radius:16px;}
  .pill{padding:7px 14px;font-size:13.5px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-panel{padding:28px 22px;}
  .list-row{flex-direction:column;align-items:flex-start;gap:14px;}
  .list-thumb{width:100%;flex:1 1 auto;}
  .float-cta{left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom));justify-content:center;border-radius:14px;height:56px;padding:0 18px;}
}
@media (max-width:520px){
  .hero-badges{flex-direction:column;align-items:flex-start;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: article */
:root{
  --brand:#1F5FD0;
  --brand-ink:#123A82;
  --accent:#2FA3A0;
  --warn:#F2A24B;
  --bg:#F6F8FB;
  --surface:#FFFFFF;
  --surface-2:#EEF3FA;
  --line:#E4E9F2;
  --text:#1B2534;
  --text-2:#5B6779;
  --radius-card:18px;
  --radius-img:16px;
  --radius-btn:12px;
  --shadow-1:0 1px 2px rgba(19,38,74,.06);
  --shadow-2:0 12px 32px -12px rgba(19,38,74,.18);
  --shadow-3:0 24px 60px -24px rgba(19,38,74,.28);
  --font-cn:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:"Inter","Noto Sans SC","PingFang SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand);}
p{margin:0 0 16px;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;color:var(--text);}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media(max-width:575.98px){.container{padding-left:16px;padding-right:16px;}}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1000;
  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(255,255,255,.6);
  box-shadow:var(--shadow-1);
  transition:height .22s ease,background .22s ease,box-shadow .22s ease;
}
.site-header.is-scrolled{
  height:64px;
  background:rgba(255,255,255,.95);
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-2);
}
.header-inner{height:100%;display:flex;align-items:center;gap:20px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(150deg,var(--brand),var(--accent));
  color:#fff;font-size:15px;box-shadow:var(--shadow-1);
}
.brand-text{
  font-family:var(--font-num);
  font-weight:700;font-size:17px;letter-spacing:.01em;
  color:var(--brand-ink);white-space:nowrap;
}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:14.5px;
  color:var(--text-2);
  border-radius:10px;
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-link:hover{color:var(--brand-ink);background:rgba(31,95,208,.06);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-ink);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.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:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--brand-ink);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-ghost{background:#fff;color:var(--brand-ink);border-color:var(--line);}
.btn-ghost:hover{background:#F2F6FF;border-color:var(--brand);color:var(--brand);}
.btn-sm-cta{padding:9px 16px;font-size:14px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--brand-ink);
  font-size:17px;align-items:center;justify-content:center;cursor:pointer;
}

/* ---------- 文章头 ---------- */
.article-hero{
  position:relative;
  padding:132px 0 44px;
  background-image:linear-gradient(180deg,rgba(255,255,255,.94) 0%,rgba(246,248,251,.97) 62%,rgba(246,248,251,1) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center right;
  border-bottom:1px solid var(--line);
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-2);margin-bottom:18px;}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--brand);text-decoration:underline;}
.crumb .sep{color:#B9C3D3;}
.crumb .current{color:var(--text-2);max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-hero h1{
  font-size:clamp(26px,3.6vw,40px);
  line-height:1.28;
  max-width:900px;
  margin-bottom:18px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13px;color:var(--text-2);}
.meta-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:rgba(47,163,160,.12);color:#1B6E6C;font-weight:600;font-size:12.5px;
}
.meta-item{display:inline-flex;align-items:center;gap:6px;}
.meta-item i{color:var(--brand);opacity:.85;}

/* ---------- 正文布局 ---------- */
.article-wrap{padding:56px 0 84px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:36px;align-items:start;}
.article-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:34px 34px 26px;
}
.article-body{font-size:17px;line-height:1.9;color:var(--text);}
.article-body p{margin:0 0 18px;}
.article-body h2{
  font-size:clamp(20px,2.4vw,24px);
  margin:36px 0 14px;
  padding-left:14px;
  border-left:4px solid var(--brand);
  border-radius:2px;
}
.article-body h2:first-child{margin-top:0;}
.article-body h3{font-size:19px;margin:28px 0 12px;}
.article-body ul,.article-body ol{padding-left:22px;margin:0 0 18px;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:8px;}
.article-body img{border-radius:var(--radius-img);margin:20px 0;width:100%;height:auto;}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-ink);}
.article-body blockquote{
  margin:22px 0;padding:16px 20px;
  background:var(--surface-2);
  border-left:4px solid var(--accent);
  border-radius:0 12px 12px 0;
  color:var(--text-2);font-size:16px;
}
.article-body table{width:100%;border-collapse:collapse;margin:20px 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;}
.article-body th{background:var(--surface-2);font-weight:600;}
.article-body code{background:var(--surface-2);padding:2px 6px;border-radius:6px;font-size:14px;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:28px 0;}

.empty-state{
  min-height:200px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  background:var(--surface-2);
  border-radius:var(--radius-card);
  text-align:center;padding:28px 20px;
}
.empty-state i{font-size:26px;color:var(--brand);opacity:.75;}
.empty-state p{color:var(--text-2);font-size:15px;margin:0;}
.empty-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;}

/* ---------- 侧栏 ---------- */
.side-col{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:20px 20px 18px;
}
.side-title{
  font-size:14px;font-weight:700;letter-spacing:.02em;
  color:var(--brand-ink);margin-bottom:12px;display:flex;align-items:center;gap:8px;
}
.side-title i{color:var(--accent);}
.side-links{display:flex;flex-direction:column;gap:2px;}
.side-links a{
  display:flex;align-items:center;gap:8px;
  font-size:14px;color:var(--text-2);
  padding:9px 10px;border-radius:10px;
}
.side-links a i{font-size:11px;color:#B9C3D3;transition:color .18s ease,transform .18s ease;}
.side-links a:hover{background:#F2F6FF;color:var(--brand-ink);}
.side-links a:hover i{color:var(--brand);transform:translateX(2px);}
.side-cta{
  background:linear-gradient(160deg,#F2F6FF,#E8F5F4);
  border:1px solid #D6E4FA;
  border-radius:var(--radius-card);
  padding:22px 20px;
  box-shadow:var(--shadow-1);
}
.side-cta h3{font-size:17px;margin-bottom:8px;}
.side-cta p{font-size:14px;color:var(--text-2);line-height:1.7;margin-bottom:16px;}
.side-cta .btn{width:100%;}
.side-note{font-size:12.5px;line-height:1.6;color:var(--text-2);margin:12px 0 0;}

/* ---------- 相关推荐 ---------- */
.related{margin-top:36px;}
.sec-head{margin-bottom:20px;}
.sec-head h2{font-size:clamp(20px,2.4vw,26px);margin-bottom:8px;}
.sec-head p{font-size:14.5px;color:var(--text-2);margin:0;}
.related-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.rel-item{
  display:flex;gap:14px;align-items:center;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:16px;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.rel-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#CFE0FA;}
.rel-thumb{
  width:64px;height:64px;flex:0 0 64px;
  border-radius:14px;overflow:hidden;background:var(--surface-2);
}
.rel-thumb img{width:100%;height:100%;object-fit:cover;}
.rel-info h3{font-size:15.5px;margin-bottom:4px;}
.rel-info p{font-size:13px;color:var(--text-2);margin:0;line-height:1.6;}

/* ---------- FAQ ---------- */
.faq-block{margin-top:36px;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:14px;
  overflow:hidden;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item.is-open{border-color:#CFE0FA;box-shadow:var(--shadow-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;
  background:none;border:0;cursor:pointer;
  padding:16px 20px 16px 22px;
  font-size:16px;font-weight:600;color:var(--text);text-align:left;
  position:relative;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;
  background:var(--brand);border-radius:0 3px 3px 0;
  transform:scaleY(0);transition:transform .2s ease;
}
.faq-item.is-open .faq-q::before{transform:scaleY(1);}
.faq-q i{color:var(--brand);font-size:14px;transition:transform .22s ease;flex:0 0 auto;}
.faq-item.is-open .faq-q i{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease;}
.faq-a p{margin:0;padding:0 20px 18px 22px;font-size:15px;line-height:1.8;color:var(--text-2);}

/* ---------- 返回入口 ---------- */
.back-bar{
  margin-top:32px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:20px 24px;
}
.back-bar p{margin:0;font-size:14.5px;color:var(--text-2);}
.back-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:20px;bottom:20px;z-index:900;
  display:inline-flex;align-items:center;gap:8px;
  background:var(--brand);color:#fff;
  padding:13px 20px;border-radius:999px;
  font-size:15px;font-weight:600;
  box-shadow:var(--shadow-3);
  opacity:0;visibility:hidden;
  transition:opacity .2s ease,visibility .2s ease,background .18s ease,transform .18s ease;
}
.float-cta.is-visible{opacity:1;visibility:visible;}
.float-cta:hover{background:var(--brand-ink);color:#fff;transform:translateY(-2px);}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--surface-2);
  border-top:1px solid var(--line);
  padding:60px 0 24px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.4fr;gap:32px;}
.footer-brand{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-num);font-weight:700;font-size:16.5px;color:var(--brand-ink);
  margin-bottom:14px;
}
.footer-intro{font-size:14px;line-height:1.75;color:var(--text-2);margin:0;max-width:34ch;}
.footer-title{font-size:15px;font-weight:700;margin-bottom:14px;color:var(--text);}
.footer-links{display:flex;flex-direction:column;gap:9px;}
.footer-links a{font-size:14px;color:var(--text-2);}
.footer-links a:hover{color:var(--brand);text-decoration:underline;}
.footer-form{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.form-field{display:flex;flex-direction:column;gap:6px;}
.form-field:nth-child(3){grid-column:1 / -1;}
.footer-form label{font-size:14px;font-weight:600;color:var(--text);}
.footer-form input,.footer-form textarea{
  width:100%;height:46px;
  border:1px solid var(--line);border-radius:var(--radius-btn);
  background:#fff;padding:0 14px;font-size:14px;color:var(--text);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.footer-form textarea{height:88px;padding:12px 14px;resize:vertical;line-height:1.7;}
.footer-form input:focus,.footer-form textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(31,95,208,.12);
}
.footer-form .btn{grid-column:1 / -1;width:100%;}
.form-hint{grid-column:1 / -1;font-size:12.5px;color:var(--text-2);margin:0;}
.footer-bottom{
  margin-top:40px;padding-top:18px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--text-2);
}

/* ---------- 响应式 ---------- */
@media(max-width:1199.98px){
  .article-layout{grid-template-columns:minmax(0,1fr) 260px;gap:28px;}
  .related-list{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media(max-width:991.98px){
  .main-nav{
    position:fixed;top:76px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;
    background:#fff;padding:12px 20px 20px;
    border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-2);
    transform:translateY(-12px);opacity:0;visibility:hidden;
    transition:transform .22s ease,opacity .22s ease,visibility .22s ease;
  }
  .main-nav.is-open{transform:translateY(0);opacity:1;visibility:visible;}
  .nav-link{padding:12px 10px;font-size:15px;border-radius:10px;}
  .nav-link::after{display:none;}
  .nav-link.is-active{background:#F2F6FF;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-sm-cta{display:none;}
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .side-col{position:static;top:auto;}
  .article-card{padding:26px 22px 20px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .article-hero{padding:118px 0 36px;}
}
@media(max-width:767.98px){
  .article-wrap{padding:40px 0 64px;}
  .related-list{grid-template-columns:minmax(0,1fr);}
  .float-cta{
    left:12px;right:12px;bottom:12px;
    justify-content:center;border-radius:14px;height:56px;
    padding:0 18px;
    padding-bottom:env(safe-area-inset-bottom);
  }
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-form{grid-template-columns:1fr;}
  .back-bar{padding:18px;}
  .back-actions .btn{flex:1 1 auto;}
}
@media(max-width:520px){
  .brand-text{font-size:15.5px;}
  .article-body{font-size:16.5px;line-height:1.85;}
  .article-hero h1{font-size:24px;}
  .crumb .current{white-space:normal;max-width:100%;}
}

/* roulang page: category1 */
:root{
  --brand:#1F5FD0;
  --brand-ink:#123A82;
  --accent:#2FA3A0;
  --warn:#F2A24B;
  --bg:#F6F8FB;
  --surface:#FFFFFF;
  --surface-2:#EEF3FA;
  --line:#E4E9F2;
  --text:#1B2534;
  --text-2:#5B6779;
  --r-card:18px;
  --r-img:16px;
  --r-btn:12px;
  --shadow-1:0 1px 2px rgba(19,38,74,.06);
  --shadow-2:0 12px 32px -12px rgba(19,38,74,.18);
  --shadow-3:0 24px 60px -24px rgba(19,38,74,.28);
  --container:1200px;
  --nav-h:76px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover;}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand);text-decoration:underline;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);letter-spacing:.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

.container{max-width:var(--container);padding-left:20px;padding-right:20px;margin:0 auto;}

/* ---------- header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1030;
  height:var(--nav-h);
  background:rgba(255,255,255,.55);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.6);
  box-shadow:var(--shadow-1);
  transition:height .22s ease,background .22s ease,box-shadow .22s ease;
}
.site-header.is-scrolled{
  height:64px;
  background:rgba(255,255,255,.95);
  box-shadow:var(--shadow-2);
}
.header-inner{
  height:100%;
  display:flex;
  align-items:center;
  gap:24px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-weight:700;
  font-size:18px;
  color:var(--brand-ink);
  white-space:nowrap;
  text-decoration:none;
}
.brand:hover{text-decoration:none;color:var(--brand-ink);}
.brand-mark{
  width:34px;height:34px;
  border-radius:10px;
  background:linear-gradient(140deg,var(--brand),var(--accent));
  color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;
  box-shadow:var(--shadow-1);
}
.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  padding:8px 12px;
  font-size:15px;
  color:var(--text);
  border-radius:10px;
  white-space:nowrap;
}
.nav-link:hover{
  color:var(--brand);
  background:rgba(31,95,208,.07);
  text-decoration:none;
}
.nav-link.is-active{
  color:var(--brand-ink);
  font-weight:600;
}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 20px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:all .18s ease;
  text-decoration:none;
  line-height:1.2;
}
.btn:hover{text-decoration:none;}
.btn-primary{
  background:var(--brand);
  color:#fff;
  box-shadow:var(--shadow-1);
}
.btn-primary:hover{
  background:var(--brand-ink);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:var(--shadow-2);
}
.btn-outline{
  background:#fff;
  color:var(--brand);
  border-color:var(--line);
}
.btn-outline:hover{
  background:#F2F6FF;
  border-color:var(--brand);
  color:var(--brand);
  transform:translateY(-1px);
  box-shadow:var(--shadow-2);
}
.btn-ghost{
  background:rgba(255,255,255,.75);
  color:var(--brand-ink);
  border-color:rgba(31,95,208,.18);
}
.btn-ghost:hover{
  background:#fff;
  border-color:var(--brand);
  color:var(--brand);
}
.btn-sm-cta{min-height:40px;padding:0 16px;font-size:14px;}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--brand-ink);
  font-size:16px;
  cursor:pointer;
}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  padding:132px 0 52px;
  min-height:290px;
  background:
    linear-gradient(105deg,rgba(255,255,255,.96) 0%,rgba(255,255,255,.86) 48%,rgba(238,243,250,.72) 100%),
    url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  border-bottom:1px solid var(--line);
  display:flex;
  align-items:center;
}
.crumbs{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-2);
  margin-bottom:14px;
}
.crumbs a{color:var(--text-2);}
.crumbs a:hover{color:var(--brand);}
.crumbs i{font-size:10px;opacity:.6;}
.page-hero h1{
  font-size:clamp(28px,4.4vw,42px);
  line-height:1.25;
  max-width:820px;
}
.page-hero .hero-sub{
  margin-top:14px;
  font-size:17px;
  color:var(--text-2);
  max-width:680px;
}
.hero-badges{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:22px;
}
.pill{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:6px 14px;
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  background:rgba(47,163,160,.12);
  color:#1E7B79;
  border:1px solid rgba(47,163,160,.22);
  letter-spacing:.02em;
}
.pill.blue{background:rgba(31,95,208,.10);color:var(--brand-ink);border-color:rgba(31,95,208,.18);}

/* ---------- sections ---------- */
.section{padding:78px 0;}
.section.tight{padding:64px 0;}
.section-alt{background:var(--surface-2);}
.section-head{max-width:760px;margin-bottom:38px;}
.section-head h2{
  font-size:clamp(22px,3vw,32px);
  line-height:1.35;
}
.section-head p{
  margin-top:12px;
  color:var(--text-2);
  font-size:16px;
}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--accent);
  font-weight:700;
  margin-bottom:10px;
  text-transform:uppercase;
}
.lead-text p + p{margin-top:16px;}
.lead-text p{color:var(--text-2);font-size:16.5px;}
.lead-text strong{color:var(--text);}

.figure-block{
  margin-top:26px;
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  background:var(--surface-2);
}
.figure-block img{
  width:100%;
  aspect-ratio:16/10;
}

/* ---------- flow ---------- */
.flow-panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  padding:28px;
}
.flow-panel h3{
  font-size:19px;
  margin-bottom:6px;
}
.flow-panel .flow-hint{
  font-size:14px;
  color:var(--text-2);
  margin-bottom:22px;
}
.flow-list{position:relative;}
.flow-list::before{
  content:"";
  position:absolute;
  left:15px;top:18px;bottom:18px;
  width:2px;
  background:linear-gradient(180deg,rgba(47,163,160,.45),rgba(47,163,160,.05));
}
.flow-item{
  position:relative;
  display:flex;
  gap:16px;
  padding:0 0 22px 0;
}
.flow-item:last-child{padding-bottom:0;}
.flow-index{
  position:relative;
  z-index:1;
  flex:0 0 32px;
  width:32px;height:32px;
  border-radius:50%;
  background:var(--accent);
  color:#fff;
  font-size:14px;
  font-weight:700;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 0 5px rgba(47,163,160,.12);
}
.flow-body h4{
  font-size:16px;
  font-weight:600;
  margin-bottom:4px;
}
.flow-body p{
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.7;
}

/* ---------- cards ---------- */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.info-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  padding:26px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  display:flex;
  flex-direction:column;
  height:100%;
}
.info-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-2);
  border-color:#CFE0FA;
}
.card-ico{
  width:46px;height:46px;
  border-radius:14px;
  background:rgba(31,95,208,.09);
  color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;
  margin-bottom:18px;
}
.card-ico.teal{background:rgba(47,163,160,.12);color:#1E7B79;}
.info-card h3{font-size:18px;margin-bottom:10px;}
.info-card p{font-size:15px;color:var(--text-2);line-height:1.8;}
.card-link{
  margin-top:18px;
  font-size:14px;
  font-weight:600;
  color:var(--brand);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.card-link i{font-size:11px;transition:transform .18s ease;}
.info-card:hover .card-link i{transform:translateX(3px);}

.thumb-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  height:100%;
  display:flex;
  flex-direction:column;
}
.thumb-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#CFE0FA;}
.thumb-card .thumb{
  aspect-ratio:16/10;
  background:var(--surface-2);
  overflow:hidden;
}
.thumb-card .thumb img{width:100%;height:100%;}
.thumb-card .thumb-body{padding:22px 24px 26px;}
.thumb-card h3{font-size:18px;margin-bottom:10px;}
.thumb-card p{font-size:15px;color:var(--text-2);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px;}
.tag{
  font-size:12px;
  letter-spacing:.02em;
  padding:4px 11px;
  border-radius:999px;
  background:rgba(47,163,160,.12);
  color:#1E7B79;
  font-weight:600;
}
.tag.gray{background:var(--surface-2);color:var(--text-2);}

/* ---------- checklist ---------- */
.check-list{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:16px;
  margin-top:28px;
}
.check-item{
  display:flex;
  gap:14px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:14px;
  padding:18px 20px;
  box-shadow:var(--shadow-1);
}
.check-item i{
  color:var(--accent);
  font-size:16px;
  margin-top:5px;
}
.check-item h4{font-size:16px;font-weight:600;margin-bottom:4px;}
.check-item p{font-size:14.5px;color:var(--text-2);line-height:1.7;}

.band{
  margin-top:30px;
  background:linear-gradient(100deg,rgba(31,95,208,.07),rgba(47,163,160,.09));
  border:1px solid rgba(31,95,208,.14);
  border-radius:var(--r-card);
  padding:24px 28px;
  display:flex;
  align-items:center;
  gap:18px;
  flex-wrap:wrap;
}
.band i.band-ico{
  width:44px;height:44px;
  border-radius:12px;
  background:#fff;
  color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;
  box-shadow:var(--shadow-1);
}
.band-text{flex:1 1 320px;}
.band-text h4{font-size:16px;margin-bottom:4px;}
.band-text p{font-size:14.5px;color:var(--text-2);}

/* ---------- horizontal list ---------- */
.h-list{display:flex;flex-direction:column;gap:14px;margin-top:26px;}
.h-item{
  display:flex;
  gap:18px;
  align-items:center;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:14px;
  padding:16px 20px;
  box-shadow:var(--shadow-1);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.h-item:hover{border-color:#CFE0FA;box-shadow:var(--shadow-2);transform:translateY(-1px);}
.h-item .h-thumb{
  flex:0 0 92px;
  width:92px;aspect-ratio:16/10;
  border-radius:12px;
  overflow:hidden;
  background:var(--surface-2);
}
.h-item .h-thumb img{width:100%;height:100%;}
.h-item .h-body{flex:1;}
.h-item h4{font-size:16px;font-weight:600;margin-bottom:4px;}
.h-item p{font-size:14.5px;color:var(--text-2);line-height:1.7;}
.h-item .h-meta{font-size:13px;color:var(--text-2);white-space:nowrap;}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--shadow-1);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.is-open{border-color:#CFE0FA;box-shadow:var(--shadow-2);}
.faq-q{
  width:100%;
  background:none;
  border:0;
  text-align:left;
  padding:18px 22px 18px 20px;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  cursor:pointer;
  position:relative;
}
.faq-q::before{
  content:"";
  position:absolute;
  left:0;top:14px;bottom:14px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--brand);
  opacity:0;
  transition:opacity .2s ease;
}
.faq-item.is-open .faq-q::before{opacity:1;}
.faq-q i{
  font-size:14px;
  color:var(--brand);
  transition:transform .22s ease;
  flex:0 0 auto;
}
.faq-item.is-open .faq-q i{transform:rotate(45deg);}
.faq-a{
  display:none;
  padding:0 22px 20px 22px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
}
.faq-item.is-open .faq-a{display:block;}

/* ---------- CTA ---------- */
.cta-panel{
  background:linear-gradient(115deg,#F3F7FF 0%,#EAF4F3 100%);
  border:1px solid rgba(31,95,208,.14);
  border-radius:22px;
  padding:42px 40px;
  box-shadow:var(--shadow-2);
  display:flex;
  align-items:center;
  gap:36px;
  flex-wrap:wrap;
}
.cta-panel .cta-copy{flex:1 1 420px;}
.cta-panel h2{font-size:clamp(21px,2.6vw,28px);margin-bottom:12px;}
.cta-panel p{color:var(--text-2);font-size:16px;max-width:640px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- float cta ---------- */
.float-cta{
  position:fixed;
  right:20px;bottom:20px;
  z-index:1040;
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:0 22px;
  height:52px;
  border-radius:999px;
  background:var(--brand);
  color:#fff;
  font-size:15px;
  font-weight:600;
  box-shadow:var(--shadow-3);
  opacity:0;
  pointer-events:none;
  transition:opacity .2s ease,background .2s ease,transform .2s ease;
}
.float-cta.is-visible{opacity:1;pointer-events:auto;}
.float-cta:hover{background:var(--brand-ink);color:#fff;text-decoration:none;transform:translateY(-2px);}

/* ---------- footer ---------- */
.site-footer{
  background:var(--surface-2);
  border-top:1px solid var(--line);
  padding:66px 0 26px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.5fr;
  gap:36px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  color:var(--brand-ink);
  margin-bottom:14px;
}
.footer-brand:hover{color:var(--brand-ink);text-decoration:none;}
.footer-intro{font-size:14px;color:var(--text-2);line-height:1.8;max-width:340px;}
.footer-title{
  font-size:15px;
  font-weight:700;
  margin-bottom:16px;
  color:var(--text);
}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:var(--text-2);}
.footer-links a:hover{color:var(--brand);}
.footer-form .form-field{margin-bottom:12px;}
.footer-form label{
  display:block;
  font-size:14px;
  font-weight:600;
  margin-bottom:6px;
}
.footer-form input,
.footer-form textarea{
  width:100%;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:#fff;
  padding:0 14px;
  font-size:14px;
  color:var(--text);
  height:46px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.footer-form textarea{height:88px;padding:12px 14px;resize:vertical;line-height:1.6;}
.footer-form input:focus,
.footer-form textarea:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(31,95,208,.12);
}
.footer-form input::placeholder,
.footer-form textarea::placeholder{color:#9AA5B5;}
.footer-form .btn{width:100%;}
.form-hint{font-size:13px;color:var(--text-2);margin-top:8px;}
.footer-bottom{
  margin-top:46px;
  padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-2);
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .card-grid{grid-template-columns:repeat(3,1fr);gap:20px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:30px;}
  .footer-grid > div:last-child{grid-column:1 / -1;}
  .footer-form{max-width:520px;}
}
@media (max-width:991px){
  .main-nav{
    position:fixed;
    top:64px;left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    background:rgba(255,255,255,.98);
    backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-2);
    padding:12px 20px 20px;
    margin-left:0;
    transform:translateY(-12px);
    opacity:0;
    pointer-events:none;
    transition:opacity .2s ease,transform .2s ease;
    max-height:calc(100vh - 64px);
    overflow:auto;
  }
  .main-nav.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
  .nav-link{padding:12px 10px;border-radius:10px;}
  .nav-link.is-active{background:rgba(31,95,208,.08);}
  .nav-link.is-active::after{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .btn-sm-cta{display:none;}
  .page-hero{padding:118px 0 46px;}
  .section{padding:60px 0;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .check-list{grid-template-columns:1fr;}
  .cta-panel{padding:32px 26px;gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-grid > div:last-child{grid-column:1 / -1;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding-left:16px;padding-right:16px;}
  .header-inner{gap:12px;}
  .brand{font-size:16px;}
  .brand-text{max-width:min(58vw,220px);overflow:hidden;text-overflow:ellipsis;}
  .page-hero{padding:110px 0 40px;min-height:250px;}
  .section{padding:48px 0;}
  .card-grid{grid-template-columns:1fr;}
  .h-item{flex-direction:column;align-items:flex-start;gap:14px;}
  .h-item .h-thumb{width:100%;flex:none;aspect-ratio:16/10;}
  .h-item .h-meta{white-space:normal;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .float-cta{
    left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom));
    height:56px;
    border-radius:14px;
    justify-content:center;
    padding:0 16px;
    opacity:1;
    pointer-events:auto;
  }
  .cta-actions .btn{flex:1 1 100%;}
}
@media (max-width:520px){
  .page-hero h1{font-size:26px;}
  .pill{font-size:12px;padding:5px 11px;}
  .flow-panel{padding:22px 18px;}
  .info-card,.thumb-card .thumb-body{padding:22px 20px;}
}

/* roulang page: category2 */
:root{
  --brand:#1F5FD0;
  --brand-ink:#123A82;
  --accent:#2FA3A0;
  --warn:#F2A24B;
  --bg:#F6F8FB;
  --surface:#FFFFFF;
  --surface-2:#EEF3FA;
  --line:#E4E9F2;
  --text:#1B2534;
  --text-2:#5B6779;
  --r-card:18px;
  --r-img:16px;
  --r-btn:12px;
  --shadow-1:0 1px 2px rgba(19,38,74,.06);
  --shadow-2:0 12px 32px -12px rgba(19,38,74,.18);
  --shadow-3:0 24px 60px -24px rgba(19,38,74,.28);
  --header-h:76px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);object-fit:cover;}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand);text-decoration:underline;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:.005em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.container{max-width:1200px;padding-left:20px;padding-right:20px;margin-left:auto;margin-right:auto;}
.section{padding:88px 0;}
.section-tight{padding:56px 0;}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head h2{font-size:clamp(22px,3vw,32px);}
.section-head p{margin-top:12px;color:var(--text-2);font-size:15px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.02em;font-weight:600;
  color:var(--brand);background:rgba(31,95,208,.08);
  border-radius:999px;padding:6px 12px;margin-bottom:14px;
}
.eyebrow i{font-size:11px;}

/* 导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  background:rgba(255,255,255,.55);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.6);
  box-shadow:var(--shadow-1);
  transition:background .25s ease,height .25s ease,box-shadow .25s ease;
}
.header-inner{height:var(--header-h);display:flex;align-items:center;justify-content:space-between;gap:20px;transition:height .25s ease;}
.site-header.is-scrolled{background:rgba(255,255,255,.95);box-shadow:var(--shadow-2);}
.site-header.is-scrolled .header-inner{height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;white-space:nowrap;}
.brand:hover{text-decoration:none;color:var(--brand-ink);}
.brand-mark{
  width:34px;height:34px;border-radius:11px;background:var(--brand);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;box-shadow:var(--shadow-1);
}
.brand-text{font-size:17px;font-weight:700;color:var(--text);letter-spacing:.01em;}
.main-nav{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;padding:8px 12px;font-size:14.5px;font-weight:500;color:var(--text-2);border-radius:10px;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--brand);text-decoration:none;}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.8);color:var(--text);font-size:16px;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .18s ease;text-decoration:none;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover,.btn-primary:focus{background:var(--brand-ink);border-color:var(--brand-ink);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-outline{background:#fff;border-color:var(--line);color:var(--text);}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);background:#F2F6FF;transform:translateY(-1px);}
.btn-sm-cta{padding:9px 16px;font-size:14px;}
.btn-block{width:100%;}

/* Hero */
.page-hero{
  position:relative;overflow:hidden;background:var(--surface);
  border-bottom:1px solid var(--line);
  padding-top:calc(var(--header-h) + 40px);
  padding-bottom:44px;
  min-height:300px;
}
.page-hero .hero-grid{
  display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;
}
.page-hero h1{font-size:clamp(28px,4.4vw,44px);line-height:1.25;}
.page-hero .hero-sub{margin-top:14px;color:var(--text-2);font-size:17px;max-width:560px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.badge-pill{
  display:inline-flex;align-items:center;gap:7px;font-size:12px;letter-spacing:.02em;font-weight:600;
  color:var(--brand-ink);background:var(--surface-2);border:1px solid var(--line);
  border-radius:999px;padding:6px 13px;
}
.badge-pill i{color:var(--accent);font-size:11px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-visual{position:relative;border-radius:20px;overflow:hidden;box-shadow:var(--shadow-2);}
.hero-visual img{width:100%;aspect-ratio:16/10;border-radius:20px;}
.hero-visual::after{
  content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(18,58,130,0) 45%,rgba(18,58,130,.42));
}
.hero-note{
  position:absolute;left:18px;bottom:16px;z-index:2;color:#fff;font-size:13px;
  display:inline-flex;align-items:center;gap:8px;font-weight:500;
}

/* 对比双卡 */
.compare-wrap{
  position:relative;display:grid;grid-template-columns:1fr 1fr;gap:0;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);overflow:hidden;
}
.compare-col{padding:32px 32px 34px;}
.compare-col + .compare-col{border-left:1px solid var(--line);}
.compare-head{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.compare-icon{
  width:42px;height:42px;border-radius:13px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(31,95,208,.1);color:var(--brand);font-size:17px;
}
.compare-col.alt .compare-icon{background:rgba(47,163,160,.14);color:#1F7C7A;}
.compare-head h3{font-size:19px;}
.compare-col > p{color:var(--text-2);font-size:15px;margin-bottom:20px;}
.compare-list li{
  display:flex;gap:12px;padding:14px 0;border-top:1px solid var(--line);font-size:15px;
}
.compare-list li:first-child{border-top:0;padding-top:0;}
.compare-list .mark{flex:0 0 22px;height:22px;border-radius:50%;background:rgba(31,95,208,.1);color:var(--brand);display:inline-flex;align-items:center;justify-content:center;font-size:10px;margin-top:4px;}
.compare-col.alt .compare-list .mark{background:rgba(47,163,160,.16);color:#1F7C7A;}
.compare-list strong{display:block;font-weight:600;font-size:15px;}
.compare-list span{color:var(--text-2);font-size:14px;}

/* 通栏信息带 */
.info-band{
  background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 32px;display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:24px;align-items:center;
}
.info-band .band-lead h3{font-size:18px;}
.info-band .band-lead p{color:var(--text-2);font-size:14px;margin-top:6px;}
.band-stat{border-left:1px solid #D8E2F0;padding-left:22px;}
.band-stat b{display:block;font-size:26px;font-weight:700;color:var(--brand-ink);line-height:1.2;font-family:Inter,"Noto Sans SC",sans-serif;}
.band-stat span{font-size:13px;color:var(--text-2);}

/* 横向列表条目 */
.h-list{display:flex;flex-direction:column;gap:18px;}
.h-item{
  display:grid;grid-template-columns:220px 1fr auto;gap:24px;align-items:center;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--shadow-1);transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.h-item:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#CFE0FA;}
.h-item img{width:100%;aspect-ratio:16/10;}
.h-item h3{font-size:18px;margin-bottom:8px;}
.h-item p{color:var(--text-2);font-size:14.5px;}
.h-item .h-meta{margin-top:10px;display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  font-size:12px;letter-spacing:.02em;font-weight:600;color:#1F7C7A;
  background:rgba(47,163,160,.12);border-radius:999px;padding:4px 11px;
}
.h-link{
  font-size:14px;font-weight:600;color:var(--brand);white-space:nowrap;
  display:inline-flex;align-items:center;gap:6px;
}
.h-link:hover{color:var(--brand-ink);text-decoration:none;}
.h-link i{transition:transform .18s ease;}
.h-link:hover i{transform:translateX(3px);}

/* 图文分段 */
.split{display:grid;grid-template-columns:.95fr 1.05fr;gap:44px;align-items:center;}
.split-figure{border-radius:20px;overflow:hidden;box-shadow:var(--shadow-2);}
.split-figure img{width:100%;aspect-ratio:16/10;border-radius:20px;}
.split-body h2{font-size:clamp(22px,3vw,30px);}
.split-body > p{margin-top:14px;color:var(--text-2);font-size:15.5px;}
.check-list{margin-top:22px;display:flex;flex-direction:column;gap:14px;}
.check-list li{display:flex;gap:12px;font-size:15px;}
.check-list i{color:var(--accent);margin-top:5px;font-size:14px;}
.check-list span{color:var(--text-2);}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.faq-item:hover{box-shadow:var(--shadow-1);}
.faq-q{
  width:100%;background:none;border:0;text-align:left;cursor:pointer;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--text);
  display:flex;align-items:center;justify-content:space-between;gap:16px;position:relative;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:0 3px 3px 0;
  background:var(--brand);opacity:0;transition:opacity .2s ease;
}
.faq-item.is-open .faq-q::before{opacity:1;}
.faq-q i{color:var(--brand);font-size:14px;transition:transform .25s ease;}
.faq-item.is-open .faq-q i{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{padding:0 22px 20px;color:var(--text-2);font-size:15px;line-height:1.8;}
.faq-item.is-open{box-shadow:var(--shadow-2);border-color:#CFE0FA;}

/* CTA 面板 */
.cta-panel{
  background:linear-gradient(120deg,#F1F6FF 0%,#EAF6F5 100%);
  border:1px solid var(--line);border-radius:22px;padding:44px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-panel h2{font-size:clamp(20px,2.6vw,28px);}
.cta-panel p{margin-top:10px;color:var(--text-2);font-size:15px;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex-shrink:0;}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:20px;bottom:20px;z-index:1040;
  display:inline-flex;align-items:center;gap:9px;
  background:var(--brand);color:#fff;font-size:14.5px;font-weight:600;
  padding:13px 20px;border-radius:999px;box-shadow:var(--shadow-3);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s ease,visibility .2s ease,transform .2s ease,background .18s ease;
}
.float-cta:hover{background:var(--brand-ink);color:#fff;text-decoration:none;}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}

/* 页脚 */
.site-footer{background:var(--surface-2);border-top:1px solid var(--line);padding:66px 0 26px;margin-top:20px;}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;color:var(--text);}
.footer-brand:hover{text-decoration:none;color:var(--brand-ink);}
.footer-intro{margin-top:16px;color:var(--text-2);font-size:14px;max-width:340px;}
.footer-title{font-size:15px;font-weight:700;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:var(--text-2);font-size:14px;}
.footer-links a:hover{color:var(--brand);}
.footer-form{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.form-field{display:flex;flex-direction:column;gap:6px;}
.form-field:nth-child(3){grid-column:1 / -1;}
.form-field label{font-size:14px;font-weight:600;}
.form-field input,.form-field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;
  padding:11px 13px;font-size:14px;color:var(--text);font-family:inherit;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.form-field input{height:46px;}
.form-field textarea{min-height:84px;resize:vertical;}
.form-field input::placeholder,.form-field textarea::placeholder{color:#9AA6B8;}
.form-field input:focus,.form-field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(31,95,208,.12);
}
.footer-form .btn{grid-column:1 / -1;}
.form-hint{grid-column:1 / -1;font-size:13px;color:var(--text-2);}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid #DDE5F0;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  font-size:13px;color:var(--text-2);
}

/* 锚点滚动留白 */
[id]{scroll-margin-top:96px;}

@media (max-width:1199px){
  .page-hero .hero-grid{gap:30px;}
  .h-item{grid-template-columns:180px 1fr auto;gap:20px;}
  .footer-grid{grid-template-columns:1.2fr 1fr 1fr;gap:30px;}
  .footer-grid > div:last-child{grid-column:1 / -1;}
}
@media (max-width:991px){
  .section{padding:64px 0;}
  .page-hero{min-height:auto;padding-top:calc(var(--header-h) + 28px);padding-bottom:36px;}
  .page-hero .hero-grid{grid-template-columns:1fr;}
  .hero-visual{order:-1;}
  .hero-visual img{aspect-ratio:16/9;}
  .compare-wrap{grid-template-columns:1fr;}
  .compare-col + .compare-col{border-left:0;border-top:1px solid var(--line);}
  .info-band{grid-template-columns:1fr 1fr;gap:20px;}
  .info-band .band-lead{grid-column:1 / -1;}
  .band-stat{border-left:0;padding-left:0;border-top:1px solid #D8E2F0;padding-top:14px;}
  .split{grid-template-columns:1fr;gap:28px;}
  .cta-panel{flex-direction:column;align-items:flex-start;padding:34px 28px;}
  .main-nav{
    position:absolute;top:100%;left:0;right:0;display:none;flex-direction:column;align-items:stretch;
    background:rgba(255,255,255,.98);border-bottom:1px solid var(--line);box-shadow:var(--shadow-2);
    padding:14px 20px 20px;gap:4px;
  }
  .main-nav.is-open{display:flex;}
  .nav-link{padding:12px 10px;font-size:15px;}
  .nav-link::after{display:none;}
  .nav-link.is-active{background:var(--surface-2);border-radius:10px;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
}
@media (max-width:767px){
  .section{padding:52px 0;}
  .btn-sm-cta{display:none;}
  .h-item{grid-template-columns:1fr;gap:16px;}
  .h-item img{aspect-ratio:16/9;}
  .h-link{justify-self:flex-start;}
  .info-band{grid-template-columns:1fr;padding:24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-form{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  body{padding-bottom:76px;}
  .float-cta{
    left:12px;right:12px;bottom:12px;border-radius:14px;justify-content:center;
    padding:16px 18px;font-size:15px;transform:translateY(10px);
  }
  .float-cta.is-visible{transform:translateY(0);}
}
@media (max-width:520px){
  .container{padding-left:16px;padding-right:16px;}
  .brand-text{font-size:15.5px;}
  .hero-actions .btn{width:100%;}
  .compare-col{padding:24px 20px 26px;}
  .cta-actions .btn{width:100%;}
}

/* roulang page: category3 */
:root{
  --brand:#1F5FD0;
  --brand-ink:#123A82;
  --accent:#2FA3A0;
  --warn:#F2A24B;
  --bg:#F6F8FB;
  --surface:#FFFFFF;
  --surface-2:#EEF3FA;
  --line:#E4E9F2;
  --text:#1B2534;
  --text-2:#5B6779;
  --radius-card:18px;
  --radius-img:16px;
  --radius-btn:12px;
  --shadow-1:0 1px 2px rgba(19,38,74,.06);
  --shadow-2:0 12px 32px -12px rgba(19,38,74,.18);
  --shadow-3:0 24px 60px -24px rgba(19,38,74,.28);
  --font:"Inter","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand);text-decoration:underline;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

.container{max-width:1200px;margin:0 auto;padding:0 20px;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  height:76px;
  background:rgba(255,255,255,.55);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.6);
  box-shadow:var(--shadow-1);
  transition:height .22s ease, background .22s ease, box-shadow .22s ease;
}
.site-header.is-scrolled{
  height:64px;
  background:rgba(255,255,255,.95);
  box-shadow:var(--shadow-2);
  border-bottom-color:var(--line);
}
.header-inner{
  height:100%;display:flex;align-items:center;gap:28px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;white-space:nowrap;}
.brand:hover{text-decoration:none;}
.brand-mark{
  width:34px;height:34px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand),#3F82E8);
  color:#fff;font-size:15px;box-shadow:var(--shadow-1);
}
.brand-text{font-size:17px;font-weight:700;color:var(--brand-ink);letter-spacing:.01em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;
  padding:9px 12px;border-radius:10px;
  font-size:14.5px;font-weight:500;color:var(--text-2);
  white-space:nowrap;
}
.nav-link:hover{color:var(--brand);background:rgba(31,95,208,.07);text-decoration:none;}
.nav-link.is-active{color:var(--brand-ink);font-weight:600;background:rgba(31,95,208,.10);}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:11px;
  border:1px solid var(--line);background:#fff;color:var(--brand-ink);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:all .18s ease;text-decoration:none;
}
.btn:hover{text-decoration:none;}
.btn.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1);}
.btn.btn-primary:hover{background:var(--brand-ink);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn.btn-outline{background:#fff;border-color:var(--line);color:var(--text);}
.btn.btn-outline:hover{border-color:var(--brand);color:var(--brand);background:#F2F6FF;transform:translateY(-1px);}
.btn.btn-sm-cta{padding:9px 16px;font-size:14px;}
.btn:active{transform:translateY(0);}

/* ---------- 分类页 Hero ---------- */
.cat-hero{
  position:relative;
  margin-top:76px;
  min-height:300px;
  padding:52px 0 46px;
  background-image:linear-gradient(105deg,rgba(255,255,255,.94) 0%,rgba(246,248,251,.88) 46%,rgba(238,243,250,.72) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center right;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.cat-hero::after{
  content:"";position:absolute;right:-120px;top:-90px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,163,160,.14),transparent 68%);
}
.hero-crumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-2);margin-bottom:18px;
}
.hero-crumb a:hover{color:var(--brand);}
.hero-crumb i{font-size:10px;opacity:.6;}
.cat-hero h1{
  font-size:clamp(28px,4.4vw,46px);
  line-height:1.25;color:var(--brand-ink);
  max-width:820px;margin-bottom:14px;
}
.cat-hero .hero-sub{
  font-size:17px;color:var(--text-2);max-width:700px;margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:2;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;position:relative;z-index:2;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;
  font-size:12.5px;font-weight:500;letter-spacing:.02em;
  background:rgba(47,163,160,.12);color:#1D6F6C;
}
.tag.tag-brand{background:rgba(31,95,208,.10);color:var(--brand-ink);}

/* ---------- 板块 ---------- */
.section{padding:80px 0;}
.section-alt{padding:80px 0;background:var(--surface-2);}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head h2{font-size:clamp(22px,3vw,32px);color:var(--text);margin-bottom:12px;}
.section-head p{color:var(--text-2);font-size:16px;}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.08em;
  color:var(--brand);text-transform:uppercase;margin-bottom:10px;
}

/* ---------- 准备区 左文右图 ---------- */
.prep-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;}
.prep-list{margin-top:22px;display:grid;gap:14px;}
.prep-list li{
  display:flex;gap:12px;align-items:flex-start;
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  padding:16px 18px;box-shadow:var(--shadow-1);
}
.prep-list i{color:var(--accent);font-size:16px;margin-top:4px;}
.prep-list strong{display:block;font-size:15.5px;font-weight:600;margin-bottom:2px;}
.prep-list span{font-size:14px;color:var(--text-2);line-height:1.7;}
.prep-figure{
  border-radius:var(--radius-img);overflow:hidden;
  box-shadow:var(--shadow-2);border:1px solid var(--line);background:var(--surface-2);
}
.prep-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.prep-figure figcaption{
  padding:12px 16px;font-size:13px;color:var(--text-2);background:var(--surface);
}

/* ---------- 数据条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;margin-bottom:44px;
}
.stat-cell{padding:22px 24px;border-right:1px solid var(--line);}
.stat-cell:last-child{border-right:none;}
.stat-num{font-size:26px;font-weight:700;color:var(--brand);line-height:1.2;}
.stat-label{font-size:13.5px;color:var(--text-2);margin-top:4px;}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;padding-left:0;max-width:900px;}
.timeline::before{
  content:"";position:absolute;left:17px;top:14px;bottom:18px;width:2px;
  background:linear-gradient(180deg,var(--brand),rgba(31,95,208,.12));
  border-radius:2px;
}
.tl-item{position:relative;padding-left:64px;margin-bottom:22px;}
.tl-item:last-child{margin-bottom:0;}
.tl-dot{
  position:absolute;left:0;top:2px;width:36px;height:36px;border-radius:50%;
  background:var(--brand);color:#fff;font-size:14px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 0 6px rgba(31,95,208,.10);
}
.tl-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 26px;box-shadow:var(--shadow-1);
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.tl-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#CFE0FA;}
.tl-card h3{font-size:18px;margin-bottom:8px;}
.tl-card p{font-size:15px;color:var(--text-2);}
.tl-meta{
  margin-top:12px;font-size:12.5px;color:var(--text-2);
  display:inline-flex;align-items:center;gap:6px;
  background:var(--surface-2);border-radius:999px;padding:4px 12px;
}

/* ---------- 横向列表条目 ---------- */
.entry-list{display:grid;gap:16px;}
.entry-item{
  display:flex;align-items:center;gap:22px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px 24px;box-shadow:var(--shadow-1);
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.entry-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#CFE0FA;}
.entry-thumb{
  flex:0 0 132px;width:132px;aspect-ratio:16/10;border-radius:12px;overflow:hidden;background:var(--surface-2);
}
.entry-thumb img{width:100%;height:100%;object-fit:cover;}
.entry-body{flex:1;min-width:0;}
.entry-body h3{font-size:17px;margin-bottom:6px;}
.entry-body p{font-size:14.5px;color:var(--text-2);}
.entry-badge{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.02em;
  padding:3px 10px;border-radius:999px;background:rgba(47,163,160,.14);color:#1D6F6C;
  margin-bottom:8px;
}
.entry-link{
  flex-shrink:0;font-size:14px;font-weight:600;color:var(--brand);
  display:inline-flex;align-items:center;gap:6px;
}

/* ---------- 卡片组 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.info-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-1);
  display:flex;flex-direction:column;
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#CFE0FA;}
.card-icon{
  width:44px;height:44px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  background:rgba(31,95,208,.10);color:var(--brand);font-size:18px;margin-bottom:16px;
}
.card-icon.accent{background:rgba(47,163,160,.14);color:#1D6F6C;}
.card-icon.warn{background:rgba(242,162,75,.16);color:#B4762B;}
.info-card h3{font-size:18px;margin-bottom:8px;}
.info-card p{font-size:15px;color:var(--text-2);}
.info-card .card-link{
  margin-top:auto;padding-top:16px;font-size:14px;font-weight:600;color:var(--brand);
  display:inline-flex;align-items:center;gap:6px;
}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:920px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  padding:0 22px;box-shadow:var(--shadow-1);transition:border-color .2s ease;
}
.faq-item[open]{border-color:#CFE0FA;box-shadow:var(--shadow-2);}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:18px 34px 18px 16px;font-size:16px;font-weight:600;color:var(--text);
  border-left:3px solid transparent;transition:border-color .2s ease,color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-item[open] summary{border-left-color:var(--brand);color:var(--brand-ink);}
.faq-item summary::after{
  content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%) rotate(0deg);
  font-size:20px;font-weight:400;color:var(--brand);transition:transform .22s ease;
  line-height:1;
}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg);}
.faq-answer{padding:0 16px 20px 16px;font-size:15px;color:var(--text-2);line-height:1.8;}

/* ---------- CTA 面板 ---------- */
.cta-panel{
  background:linear-gradient(120deg,#FFFFFF 0%,#EEF3FA 100%);
  border:1px solid var(--line);border-radius:24px;
  padding:44px;box-shadow:var(--shadow-2);
  display:grid;grid-template-columns:1.3fr .7fr;gap:36px;align-items:center;
}
.cta-panel h2{font-size:clamp(22px,3vw,30px);margin-bottom:12px;}
.cta-panel p{color:var(--text-2);font-size:16px;margin-bottom:22px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-side{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);
}
.cta-side h3{font-size:16px;margin-bottom:12px;}
.cta-side ul{display:grid;gap:10px;}
.cta-side li{display:flex;align-items:center;gap:10px;font-size:14.5px;color:var(--text-2);}
.cta-side i{color:var(--accent);font-size:14px;}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:20px;bottom:20px;z-index:1100;
  display:inline-flex;align-items:center;gap:9px;
  padding:14px 22px;border-radius:999px;
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;
  box-shadow:var(--shadow-3);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .2s ease, transform .2s ease, background .2s ease, visibility .2s;
}
.float-cta:hover{background:var(--brand-ink);color:#fff;text-decoration:none;}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--surface-2);
  border-top:1px solid var(--line);
  padding:64px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:36px;}
.footer-brand{
  display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;
  color:var(--brand-ink);margin-bottom:14px;
}
.footer-brand:hover{text-decoration:none;}
.footer-intro{font-size:14px;color:var(--text-2);line-height:1.8;max-width:340px;}
.footer-title{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--text);}
.footer-links{display:grid;gap:10px;}
.footer-links a{font-size:14px;color:var(--text-2);}
.footer-links a:hover{color:var(--brand);}
.footer-form{display:grid;gap:12px;}
.form-field{display:grid;gap:6px;}
.form-field label{font-size:14px;font-weight:600;color:var(--text);}
.form-field input,
.form-field textarea{
  width:100%;border:1px solid var(--line);border-radius:12px;
  padding:0 14px;height:46px;background:#fff;color:var(--text);
  transition:border-color .18s ease, box-shadow .18s ease;
}
.form-field textarea{height:auto;min-height:88px;padding:11px 14px;resize:vertical;line-height:1.7;}
.form-field input::placeholder,
.form-field textarea::placeholder{color:#9AA5B5;}
.form-field input:focus,
.form-field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(31,95,208,.12);
}
.footer-form .btn{width:100%;}
.form-hint{font-size:12.5px;color:var(--text-2);}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-2);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .prep-grid{gap:32px;}
  .footer-grid{grid-template-columns:1.3fr 1fr 1fr 1.2fr;gap:28px;}
}
@media (max-width:991px){
  .main-nav{
    position:absolute;top:calc(100% + 8px);left:20px;right:20px;
    flex-direction:column;align-items:stretch;gap:4px;
    background:rgba(255,255,255,.98);
    border:1px solid var(--line);border-radius:16px;
    box-shadow:var(--shadow-2);padding:12px;
    display:none;margin-left:0;
  }
  .main-nav.is-open{display:flex;}
  .nav-link{padding:11px 14px;font-size:15px;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-sm-cta{display:none;}
  .cat-hero{margin-top:76px;padding:42px 0 38px;}
  .prep-grid{grid-template-columns:1fr;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .stat-cell:nth-child(2){border-right:none;}
  .stat-cell:nth-child(1),
  .stat-cell:nth-child(2){border-bottom:1px solid var(--line);}
  .cta-panel{grid-template-columns:1fr;padding:34px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section,.section-alt{padding:52px 0;}
  .section-head{margin-bottom:26px;}
  .cat-hero{min-height:0;padding:34px 0 30px;}
  .cat-hero .hero-sub{font-size:15.5px;}
  .hero-actions .btn{flex:1 1 100%;}
  .card-grid{grid-template-columns:1fr;}
  .stat-strip{grid-template-columns:1fr;}
  .stat-cell{border-right:none;border-bottom:1px solid var(--line);}
  .stat-cell:last-child{border-bottom:none;}
  .entry-item{flex-direction:column;align-items:flex-start;gap:14px;}
  .entry-thumb{flex:0 0 auto;width:100%;}
  .timeline::before{left:13px;}
  .tl-item{padding-left:52px;}
  .tl-dot{width:28px;height:28px;font-size:13px;}
  .faq-item{padding:0 16px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .float-cta{
    right:12px;left:12px;bottom:calc(12px + env(safe-area-inset-bottom,0px));
    justify-content:center;height:56px;border-radius:14px;padding:0 18px;
  }
}

/* roulang page: category4 */
:root{
  --brand:#1F5FD0;
  --brand-ink:#123A82;
  --accent:#2FA3A0;
  --warn:#F2A24B;
  --bg:#F6F8FB;
  --surface:#FFFFFF;
  --surface-2:#EEF3FA;
  --line:#E4E9F2;
  --text:#1B2534;
  --text-2:#5B6779;
  --radius-card:18px;
  --radius-img:16px;
  --radius-btn:12px;
  --shadow-1:0 1px 2px rgba(19,38,74,.06);
  --shadow-2:0 12px 32px -12px rgba(19,38,74,.18);
  --shadow-3:0 24px 60px -24px rgba(19,38,74,.28);
  --header-h:76px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand);text-decoration:underline}
h1,h2,h3,h4{margin:0;font-family:inherit;color:var(--text)}
h1{font-size:clamp(28px,4.4vw,46px);line-height:1.25;font-weight:700}
h2{font-size:clamp(22px,3vw,32px);line-height:1.3;font-weight:700}
h3{font-size:19px;line-height:1.45;font-weight:600}
p{margin:0 0 16px}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}

/* ============ header ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1040;
  height:var(--header-h);
  background:rgba(255,255,255,.55);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.6);
  box-shadow:var(--shadow-1);
  transition:height .25s ease,background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  height:64px;
  background:rgba(255,255,255,.95);
  box-shadow:var(--shadow-2);
}
.header-inner{display:flex;align-items:center;gap:18px;height:100%}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-weight:700;font-size:17px;white-space:nowrap;color:var(--text);
}
.brand:hover{color:var(--brand-ink);text-decoration:none}
.brand-mark{
  width:34px;height:34px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#2A6BDC,#3E82EA);
  color:#fff;font-size:14px;
  box-shadow:0 6px 16px -8px rgba(31,95,208,.85);
  flex:0 0 auto;
}
.brand-text{letter-spacing:.01em}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  display:inline-flex;align-items:center;
  padding:8px 14px;border-radius:999px;
  font-size:15px;color:var(--text-2);white-space:nowrap;
  transition:background .2s ease,color .2s ease;
}
.nav-link:hover{color:var(--brand);background:rgba(31,95,208,.08);text-decoration:none}
.nav-link.is-active{color:var(--brand);background:rgba(31,95,208,.1);font-weight:600}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--text);
  cursor:pointer;align-items:center;justify-content:center;font-size:16px;
  transition:border-color .2s ease,color .2s ease;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.4;
  border:1px solid transparent;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--brand-ink);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-outline{background:#fff;color:var(--brand-ink);border-color:var(--line)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);background:#F2F6FF;text-decoration:none}
.btn-sm-cta{padding:9px 18px;font-size:14px}

/* ============ hero ============ */
.page-hero{
  position:relative;
  padding:calc(var(--header-h) + 46px) 0 54px;
  background-image:
    linear-gradient(115deg,rgba(246,248,251,.97) 0%,rgba(246,248,251,.92) 48%,rgba(238,243,250,.74) 100%),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.breadcrumb-nav{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-2);margin-bottom:18px;letter-spacing:.02em;
}
.breadcrumb-nav a{color:var(--text-2)}
.breadcrumb-nav a:hover{color:var(--brand)}
.breadcrumb-nav i{font-size:10px;opacity:.7}
.hero-title{max-width:900px;margin-bottom:14px}
.hero-sub{font-size:17px;color:var(--text-2);max-width:660px;margin-bottom:24px;line-height:1.75}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px}
.badge-soft{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 15px;border-radius:999px;
  background:rgba(47,163,160,.12);color:#1C6F6D;
  font-size:13px;font-weight:600;letter-spacing:.02em;
}

/* ============ sections ============ */
.section{padding:88px 0}
.section-alt{background:var(--surface)}
.section-head{max-width:760px;margin-bottom:42px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-title{margin-bottom:14px}
.section-desc{color:var(--text-2);font-size:16px;margin:0}

/* ============ notice cards ============ */
.notice-card{
  height:100%;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-1);
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.notice-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#CFE0FA}
.notice-icon{
  width:44px;height:44px;border-radius:14px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(31,95,208,.1);color:var(--brand);
  font-size:17px;margin-bottom:16px;
}
.notice-card h3{margin-bottom:10px;font-size:18px}
.notice-card p{color:var(--text-2);font-size:15px;line-height:1.75;margin:0}

/* ============ mosaic ============ */
.mosaic{display:grid;grid-template-columns:repeat(6,1fr);gap:24px}
.m-card{
  position:relative;display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:26px;
  box-shadow:var(--shadow-1);
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.m-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#CFE0FA}
.col-span-4{grid-column:span 4}
.col-span-3{grid-column:span 3}
.col-span-2{grid-column:span 2}
.m-card-media{
  border-radius:var(--radius-img);overflow:hidden;
  background:var(--surface-2);aspect-ratio:16/10;margin-bottom:20px;
}
.m-card-media img{width:100%;height:100%;object-fit:cover}
.m-card h3{margin-bottom:10px;font-size:19px}
.m-card p{color:var(--text-2);font-size:15px;line-height:1.75;margin:0 0 16px}
.m-card-link{
  margin-top:auto;display:inline-flex;align-items:center;gap:7px;
  font-size:14px;font-weight:600;color:var(--brand);
}
.m-card-link i{transition:transform .2s ease}
.m-card-link:hover{text-decoration:none;color:var(--brand-ink)}
.m-card-link:hover i{transform:translateX(3px)}
.mini-tag{
  display:inline-block;padding:4px 12px;border-radius:999px;
  background:rgba(47,163,160,.13);color:#1C6F6D;
  font-size:12px;font-weight:600;letter-spacing:.02em;margin-bottom:14px;
}
.tip-block{
  background:var(--surface-2);
  border:1px dashed #C9D8F0;border-radius:var(--radius-card);
  padding:26px;display:flex;flex-direction:column;justify-content:center;gap:8px;
}
.tip-block h3{font-size:18px}
.tip-block p{font-size:14px;color:var(--text-2);margin:0 0 14px;line-height:1.7}
.tip-block .btn{align-self:flex-start}

/* ============ checklist ============ */
.checklist{display:grid;gap:14px}
.check-item{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--surface);border:1px solid var(--line);
  border-radius:14px;padding:18px 20px;box-shadow:var(--shadow-1);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.check-item:hover{border-color:#CFE0FA;box-shadow:var(--shadow-2)}
.check-mark{
  flex:0 0 30px;width:30px;height:30px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(31,95,208,.1);color:var(--brand);font-size:12px;margin-top:3px;
}
.check-item h3{font-size:16px;margin-bottom:4px}
.check-item p{margin:0;font-size:14px;color:var(--text-2);line-height:1.7}
.side-panel{
  background:linear-gradient(165deg,#F4F8FE 0%,#E9F1FC 100%);
  border:1px solid #DCE7F8;border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-1);
}
.side-panel h3{margin-bottom:12px}
.side-panel p{font-size:15px;color:var(--text-2);line-height:1.75}
.side-list{display:grid;gap:10px;margin-top:16px}
.side-list li{
  display:flex;gap:10px;font-size:14px;color:var(--text);
  background:rgba(255,255,255,.75);border-radius:12px;padding:12px 14px;
}
.side-list li i{color:var(--accent);margin-top:5px;font-size:12px}

/* ============ faq ============ */
.faq-wrap{max-width:880px;margin:0 auto;display:grid;gap:12px}
.faq-item{
  position:relative;background:var(--surface);
  border:1px solid var(--line);border-radius:14px;
  padding:0 22px;box-shadow:var(--shadow-1);overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:#CFE0FA}
.faq-item::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  border-radius:3px;background:var(--brand);opacity:0;transition:opacity .2s ease;
}
.faq-item.is-open::before{opacity:1}
.faq-q-wrap{margin:0}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:0;text-align:left;cursor:pointer;
  padding:18px 0 18px 12px;
  font-size:16px;font-weight:600;color:var(--text);line-height:1.6;
}
.faq-q:hover{color:var(--brand-ink)}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--surface-2);color:var(--brand);font-size:11px;
  transition:transform .25s ease,background .2s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:rgba(31,95,208,.13)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.is-open .faq-a{max-height:360px}
.faq-a-inner{padding:0 12px 20px 12px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* ============ cta panel ============ */
.cta-panel{
  background:var(--surface);border:1px solid var(--line);
  border-radius:22px;box-shadow:var(--shadow-2);
  padding:40px;display:grid;grid-template-columns:1fr 1fr;gap:40px;
}
.cta-copy h2{margin-bottom:14px}
.cta-copy p{color:var(--text-2);font-size:16px;line-height:1.8}
.cta-list{display:grid;gap:10px;margin:18px 0 0}
.cta-list li{display:flex;gap:10px;font-size:14px;color:var(--text-2)}
.cta-list li i{color:var(--accent);margin-top:5px;font-size:12px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-field{display:flex;flex-direction:column;gap:8px}
.form-field.full{grid-column:1 / -1}
.form-field label{font-size:14px;font-weight:600;color:var(--text)}
.form-field input,
.form-field textarea{
  width:100%;border:1px solid var(--line);border-radius:12px;
  padding:12px 14px;font-family:inherit;font-size:15px;color:var(--text);
  background:#fff;transition:border-color .2s ease,box-shadow .2s ease;
}
.form-field input{height:46px}
.form-field textarea{min-height:112px;resize:vertical;line-height:1.7}
.form-field input::placeholder,
.form-field textarea::placeholder{color:#9AA5B6}
.form-field input:focus,
.form-field textarea:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(31,95,208,.12);
}
.form-field.has-error input,
.form-field.has-error textarea{border-color:#D9534F}
.form-hint{font-size:13px;color:var(--text-2);margin:12px 0 0;line-height:1.7}

/* ============ footer ============ */
.site-footer{
  background:var(--surface-2);
  border-top:1px solid var(--line);
  padding:64px 0 24px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:36px}
.footer-brand{
  display:inline-flex;align-items:center;gap:10px;
  font-weight:700;font-size:17px;color:var(--text);margin-bottom:14px;
}
.footer-brand:hover{color:var(--brand-ink);text-decoration:none}
.footer-intro{font-size:14px;color:var(--text-2);line-height:1.75;margin:0}
.footer-title{font-size:15px;font-weight:700;margin-bottom:16px}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:14px;color:var(--text-2)}
.footer-links a:hover{color:var(--brand)}
.footer-form{display:grid;gap:12px}
.footer-form .form-field label{font-size:13px}
.footer-form input,
.footer-form textarea{
  width:100%;border:1px solid var(--line);border-radius:12px;
  padding:10px 12px;font-family:inherit;font-size:14px;color:var(--text);
  background:#fff;transition:border-color .2s ease,box-shadow .2s ease;
}
.footer-form input{height:42px}
.footer-form textarea{min-height:84px;resize:vertical;line-height:1.7}
.footer-form input:focus,
.footer-form textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(31,95,208,.12);
}
.footer-bottom{
  margin-top:46px;padding-top:20px;border-top:1px solid #DDE5F0;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--text-2);
}

/* ============ floating cta ============ */
.float-cta{
  position:fixed;right:20px;bottom:20px;z-index:1050;
  display:inline-flex;align-items:center;gap:9px;
  padding:14px 22px;border-radius:999px;
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;
  box-shadow:var(--shadow-3);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .2s ease,transform .2s ease,background .2s ease,visibility .2s ease;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{background:var(--brand-ink);color:#fff;text-decoration:none;transform:translateY(-1px)}

/* ============ responsive ============ */
@media (min-width:992px) and (max-width:1199px){
  .nav-link{font-size:14px;padding:8px 10px}
  .brand{font-size:16px}
}
@media (max-width:1100px){
  .header-actions .btn-sm-cta{display:none}
}
@media (max-width:991px){
  .nav-toggle{display:inline-flex}
  .main-nav{
    position:fixed;top:var(--header-h);left:0;right:0;
    display:none;flex-direction:column;align-items:stretch;gap:4px;
    margin:0;padding:14px 20px 22px;
    background:rgba(255,255,255,.98);
    border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-2);
    max-height:calc(100vh - var(--header-h));
    overflow:auto;
  }
  .main-nav.is-open{display:flex}
  .nav-link{padding:12px 14px;border-radius:12px;font-size:15px}
  .section{padding:64px 0}
  .mosaic{grid-template-columns:repeat(2,1fr)}
  .col-span-3,.col-span-2{grid-column:span 1}
  .col-span-4{grid-column:span 2}
  .cta-panel{grid-template-columns:1fr;gap:28px;padding:30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:575px){
  .container{padding-left:16px;padding-right:16px}
  .section{padding:52px 0}
  .page-hero{padding:calc(var(--header-h) + 32px) 0 40px}
  .hero-sub{font-size:16px}
  .mosaic{grid-template-columns:1fr}
  .col-span-4,.col-span-3,.col-span-2{grid-column:span 1}
  .form-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .cta-panel{padding:24px;border-radius:18px}
  .float-cta{
    left:12px;right:12px;bottom:12px;height:56px;
    justify-content:center;border-radius:14px;padding:0 16px;
    transform:translateY(14px);
  }
  .float-cta.is-visible{transform:translateY(0)}
  body{padding-bottom:78px}
}