/* roulang page: index */
:root{
  --c-primary:#1C6DF0;
  --c-primary-dark:#124FA8;
  --c-primary-light:#EAF1FE;
  --c-accent:#FF7A45;
  --c-ok:#17B890;
  --c-warn:#F0A11C;
  --c-err:#E5484D;
  --ink:#0F1B2D;
  --text:#52606D;
  --muted:#8A94A6;
  --line:#E6EAF2;
  --bg:#F5F8FC;
  --card:#FFFFFF;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-input:10px;
  --sh-sm:0 1px 2px rgba(15,27,45,.06);
  --sh-md:0 8px 24px -12px rgba(15,27,45,.14);
  --sh-lg:0 20px 48px -20px rgba(15,27,45,.20);
  --sp-section:104px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.01em;line-height:1.3;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:var(--sp-section) 0;}
.section--tight{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--c-primary);
  background:var(--c-primary-light);border-radius:999px;padding:5px 14px;margin-bottom:14px;
}
.section-head h2{font-size:28px;margin-bottom:12px;}
.section-head p{font-size:16px;color:var(--text);}
.lead{font-size:17px;color:var(--text);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:background .18s ease,transform .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-md);}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:var(--sh-lg);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-sm);}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:#C7DAFB;}
.btn-ghost:hover{background:var(--c-primary-light);border-color:#A9C7F6;}
.btn-ghost:active{transform:translateY(1px);}
.btn-text{background:transparent;color:var(--c-primary);padding:0 4px;height:auto;}
.btn-text .arrow{transition:transform .18s ease;display:inline-block;}
.btn-text:hover .arrow{transform:translateX(2px);}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:var(--sh-md);}
.btn-accent:hover{background:#F2662B;transform:translateY(-1px);}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--c-primary-light);color:var(--c-primary-dark);
  border-radius:999px;padding:3px 12px;font-size:12px;font-weight:600;line-height:1.6;
}
.badge--accent{background:#FFEDE5;color:#C24C17;}
.badge--ok{background:#E4F7F1;color:#0B7D60;}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:var(--text);font-size:13px;
}

/* ---------- 头部 ---------- */
.site-header{position:relative;z-index:60;background:#fff;border-bottom:1px solid var(--line);}
.brand-row{display:flex;align-items:center;gap:20px;height:76px;}
.logo{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:var(--ink);flex-shrink:0;}
.logo-mark{
  width:36px;height:36px;border-radius:11px;background:var(--c-primary);
  display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-sm);flex-shrink:0;
}
.logo-mark svg{width:20px;height:20px;display:block;}
.brand-line{font-size:13px;color:var(--muted);padding-left:16px;border-left:1px solid var(--line);white-space:nowrap;}
.brand-actions{margin-left:auto;display:flex;align-items:center;gap:14px;}
.search-box{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;
  border:1px solid var(--line);border-radius:999px;background:var(--bg);
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.search-box:focus-within{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(28,109,240,.12);}
.search-box svg{width:16px;height:16px;color:var(--muted);flex-shrink:0;}
.search-box input{border:0;background:transparent;outline:none;width:148px;font-size:14px;}
.search-box input::placeholder{color:var(--muted);}
.brand-link{font-size:14px;color:var(--text);font-weight:500;}
.brand-link:hover{color:var(--c-primary);}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;cursor:pointer;
  align-items:center;justify-content:center;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;border-radius:2px;}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}

.channel-bar{position:sticky;top:0;z-index:55;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease;}
.channel-bar.is-compact{box-shadow:var(--sh-md);}
.channel-inner{
  display:flex;align-items:center;gap:6px;height:58px;overflow-x:auto;
  scrollbar-width:none;-ms-overflow-style:none;transition:height .2s ease;
}
.channel-inner::-webkit-scrollbar{display:none;}
.channel-bar.is-compact .channel-inner{height:50px;}
.channel-link{
  padding:8px 16px;border-radius:999px;font-size:15px;font-weight:500;
  color:var(--text);white-space:nowrap;transition:background .18s ease,color .18s ease;
}
.channel-link:hover{background:var(--c-primary-light);color:var(--c-primary-dark);}
.channel-link.is-active{background:var(--c-primary);color:#fff;font-weight:600;}
.channel-bar .channel-inner{background:#fff;}

.drawer{
  display:none;border-top:1px solid var(--line);background:#fff;
  padding:12px 20px 20px;
}
.drawer.is-open{display:block;}
.drawer-group-title{font-size:12px;color:var(--muted);font-weight:600;letter-spacing:.08em;margin:12px 0 6px;}
.drawer a{display:block;padding:11px 12px;border-radius:10px;font-size:15px;color:var(--ink);}
.drawer a:hover,.drawer a.is-active{background:var(--c-primary-light);color:var(--c-primary-dark);}

/* ---------- Hero ---------- */
.hero{position:relative;padding:76px 0 92px;background:linear-gradient(180deg,#FFFFFF 0%,#F5F8FC 100%);overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(28,109,240,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(28,109,240,.055) 1px,transparent 1px);
  background-size:32px 32px;pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero h1{font-size:40px;line-height:1.25;margin-bottom:18px;}
.hero h1 em{font-style:normal;color:var(--c-primary);}
.hero-sub{font-size:17px;color:var(--text);max-width:520px;margin-bottom:28px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px 22px;}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text);}
.hero-trust .dot{width:7px;height:7px;border-radius:50%;background:var(--c-ok);flex-shrink:0;}
.hero-media{position:relative;}
.hero-media img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:16px;box-shadow:var(--sh-lg);}
.hero-media::after{
  content:"";position:absolute;inset:0;border-radius:16px;
  background-image:linear-gradient(rgba(15,27,45,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(15,27,45,.05) 1px,transparent 1px);
  background-size:24px 24px;pointer-events:none;
}
.hero-float{
  position:absolute;left:-18px;bottom:24px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-lg);padding:14px 18px;min-width:176px;
}
.hero-float strong{display:block;font-size:22px;color:var(--c-primary);line-height:1.3;}
.hero-float span{font-size:13px;color:var(--muted);}

/* ---------- 卡片 ---------- */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-lg);border-color:rgba(28,109,240,.22);}

/* ---------- Bento 卖点 ---------- */
.bento{display:grid;grid-template-columns:repeat(3,1fr);grid-auto-rows:minmax(196px,auto);gap:24px;}
.bento-card{padding:26px;display:flex;flex-direction:column;gap:12px;}
.bento-card h3{font-size:20px;}
.bento-card p{font-size:15px;color:var(--text);}
.bento-icon{
  width:44px;height:44px;border-radius:12px;background:var(--c-primary-light);
  display:flex;align-items:center;justify-content:center;color:var(--c-primary);flex-shrink:0;
}
.bento-icon svg{width:22px;height:22px;}
.bento-wide{grid-column:span 2;padding:0;overflow:hidden;display:grid;grid-template-columns:1.1fr .9fr;gap:0;}
.bento-wide .bento-copy{padding:28px;display:flex;flex-direction:column;gap:12px;justify-content:center;}
.bento-wide img{height:100%;width:100%;object-fit:cover;border-radius:0;}
.bento-tall{grid-row:span 2;justify-content:flex-start;}
.bento-tall .tall-list{margin-top:auto;display:flex;flex-direction:column;gap:10px;}
.bento-tall .tall-list li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--text);}
.bento-tall .tall-list li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent);margin-top:9px;flex-shrink:0;}

/* ---------- 演示区 ---------- */
.demo{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.demo-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:center;}
.steps{position:relative;padding-left:8px;}
.step{position:relative;display:flex;gap:20px;padding:0 0 34px 0;}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:23px;top:52px;bottom:2px;width:1px;background:var(--line);
}
.step:last-child::before{display:none;}
.step-num{
  width:48px;height:48px;border-radius:50%;border:2px solid var(--c-primary);
  color:var(--c-primary);font-weight:700;font-size:17px;
  display:flex;align-items:center;justify-content:center;flex-shrink:0;background:#fff;
}
.step-body h3{font-size:18px;margin-bottom:6px;}
.step-body p{font-size:15px;color:var(--text);}
.demo-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--sh-md);}
.demo-media figcaption{font-size:14px;color:var(--muted);margin-top:12px;text-align:center;}

/* ---------- 证据区 ---------- */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);overflow:hidden;margin-bottom:44px;
}
.stat{padding:28px 24px;border-left:1px solid var(--line);}
.stat:first-child{border-left:0;}
.stat strong{display:block;font-size:32px;color:var(--c-primary);line-height:1.2;letter-spacing:-.02em;}
.stat span{font-size:13px;color:var(--muted);}
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:48px;}
.quote{
  background:#fff;border-radius:var(--r-card);padding:26px 26px 26px 30px;position:relative;
  box-shadow:var(--sh-sm);
}
.quote::before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:4px;border-radius:4px;background:var(--c-primary);}
.quote p{font-size:15px;color:var(--text);margin-bottom:18px;}
.quote-user{display:flex;align-items:center;gap:12px;}
.avatar{
  width:40px;height:40px;border-radius:50%;background:var(--c-primary-light);color:var(--c-primary-dark);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex-shrink:0;
}
.quote-user strong{display:block;font-size:14px;color:var(--ink);}
.quote-user span{font-size:12px;color:var(--muted);}
.logo-wall{display:flex;flex-wrap:wrap;gap:18px 40px;align-items:center;justify-content:center;padding-top:8px;}
.logo-wall span{
  font-size:16px;font-weight:600;color:#A9B2C0;letter-spacing:.02em;
  transition:color .2s ease;cursor:default;
}
.logo-wall span:hover{color:var(--c-primary);}

/* ---------- 价格 ---------- */
.price{background:#fff;border-top:1px solid var(--line);}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:center;margin-bottom:56px;}
.plan{padding:30px;display:flex;flex-direction:column;gap:16px;}
.plan h3{font-size:20px;}
.plan .price-num{font-size:34px;font-weight:700;color:var(--ink);line-height:1.2;}
.plan .price-num small{font-size:14px;font-weight:500;color:var(--muted);margin-left:6px;}
.plan ul{display:flex;flex-direction:column;gap:10px;font-size:14px;}
.plan ul li{display:flex;gap:10px;align-items:flex-start;}
.plan ul li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-ok);margin-top:9px;flex-shrink:0;}
.plan-featured{
  transform:scale(1.05);border:2px solid var(--c-primary);position:relative;z-index:2;
  box-shadow:var(--sh-lg);
}
.plan-featured::after{
  content:"最受欢迎";position:absolute;top:-1px;left:-2px;
  background:var(--c-accent);color:#fff;font-size:12px;font-weight:600;
  padding:5px 14px;border-radius:var(--r-card) 0 var(--r-card) 0;
}
.table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);}
table.cmp{min-width:640px;font-size:14px;}
table.cmp th,table.cmp td{padding:14px 20px;text-align:left;border-bottom:1px solid var(--line);}
table.cmp thead th{background:#F9FBFE;color:var(--ink);font-weight:600;position:sticky;top:0;}
table.cmp tbody tr:nth-child(even){background:#FBFCFE;}
table.cmp tbody tr:last-child td{border-bottom:0;}
table.cmp td:first-child{color:var(--ink);font-weight:500;}

/* ---------- 资讯列表 ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.news-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.news-card{overflow:hidden;display:flex;flex-direction:column;}
.news-card--lead{grid-column:span 2;}
.news-thumb{overflow:hidden;border-radius:var(--r-card) var(--r-card) 0 0;}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;transition:transform .3s ease;}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--muted);}
.news-title{
  font-size:17px;font-weight:700;color:var(--ink);line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card--lead .news-title{font-size:20px;}
.news-desc{
  font-size:14px;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-more{margin-top:auto;font-size:14px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px;}
.news-more .arrow{transition:transform .18s ease;}
.news-card:hover .news-more .arrow{transform:translateX(2px);}
.news-empty{
  grid-column:1/-1;background:#fff;border:1px dashed #C7DAFB;border-radius:var(--r-card);
  padding:56px 24px;text-align:center;box-shadow:var(--sh-sm);
}
.news-empty strong{display:block;font-size:18px;color:var(--ink);margin-bottom:8px;}
.news-empty p{font-size:14px;color:var(--muted);margin-bottom:20px;}

/* ---------- FAQ ---------- */
.faq{background:#fff;border-top:1px solid var(--line);}
.faq-list{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{background:#F7FAFF;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:box-shadow .2s ease,background .2s ease;}
.faq-item.is-open{background:#fff;box-shadow:var(--sh-md);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;min-height:56px;background:transparent;border:0;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--ink);text-align:left;
}
.faq-icon{
  width:26px;height:26px;flex-shrink:0;border-radius:50%;border:1px solid #C7DAFB;color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:16px;line-height:1;
  transition:transform .2s ease,background .2s ease,color .2s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--c-primary);color:#fff;border-color:var(--c-primary);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;}
.faq-a-inner{padding:0 24px 22px;font-size:15px;color:var(--text);}

/* ---------- 结尾 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:20px;padding:64px 48px;
  background:var(--c-primary-light);
  display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
}
.cta-band::before{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(28,109,240,.18) 0%,rgba(28,109,240,0) 70%);
}
.cta-band::after{
  content:"";position:absolute;left:-40px;bottom:-70px;width:200px;height:200px;
  background-image:radial-gradient(rgba(255,122,69,.35) 2px,transparent 2px);
  background-size:16px 16px;opacity:.6;pointer-events:none;
}
.cta-copy{position:relative;max-width:560px;}
.cta-copy h2{font-size:28px;margin-bottom:12px;}
.cta-copy p{font-size:16px;color:var(--text);}
.cta-actions{position:relative;display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:#0F1B2D;color:#9AA7BA;padding:64px 0 0;margin-top:0;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1.1fr;gap:36px;padding-bottom:44px;}
.footer-brand .logo{color:#fff;margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.85;color:#8A97AC;max-width:320px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:#9AA7BA;transition:color .18s ease;}
.footer-col a:hover{color:#5B9BFF;}
.footer-col p{line-height:1.85;color:#8A97AC;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:22px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#7C8899;
}
.footer-bottom a{color:#A9B5C6;}
.footer-bottom a:hover{color:#5B9BFF;}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:80;
  display:flex;align-items:center;gap:10px;
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta .pill{
  display:inline-flex;align-items:center;gap:8px;height:50px;padding:0 24px;
  border-radius:999px;background:var(--c-primary);color:#fff;font-weight:600;font-size:15px;
  box-shadow:var(--sh-lg);
}
.float-cta .pill:hover{background:var(--c-primary-dark);}
.float-cta .icon-btn{
  width:50px;height:50px;border-radius:50%;background:#fff;color:var(--c-primary);
  border:1px solid var(--line);box-shadow:var(--sh-md);
  display:flex;align-items:center;justify-content:center;
}
.float-cta .icon-btn:hover{background:var(--c-primary-light);}
.float-cta .icon-btn svg{width:20px;height:20px;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{padding:0 24px;}
  :root{--sp-section:88px;}
  .hero h1{font-size:34px;}
  .news-grid{grid-template-columns:repeat(3,1fr);}
  .news-card--lead{grid-column:span 3;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px;}
}
@media (max-width:991px){
  .brand-line{display:none;}
  .search-box{display:none;}
  .menu-toggle{display:flex;}
  .channel-bar{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-media img{aspect-ratio:16/9;}
  .bento{grid-template-columns:repeat(2,1fr);}
  .bento-wide{grid-column:span 2;grid-template-columns:1fr;grid-template-rows:auto auto;}
  .bento-wide img{height:200px;}
  .bento-tall{grid-row:auto;}
  .demo-grid{grid-template-columns:1fr;gap:36px;}
  .quote-grid{grid-template-columns:1fr;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .stat:nth-child(odd){border-left:0;}
  .stat:nth-child(n+3){border-top:1px solid var(--line);}
  .price-grid{grid-template-columns:1fr;gap:20px;}
  .plan-featured{transform:none;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .news-card--lead{grid-column:span 2;}
  .hero-float{left:auto;right:16px;bottom:16px;}
}
@media (max-width:767px){
  :root{--sp-section:56px;}
  body{font-size:15px;}
  .section-head h2{font-size:22px;}
  .hero{padding:44px 0 56px;}
  .hero h1{font-size:28px;}
  .hero-sub{font-size:15px;}
  .btn{height:44px;padding:0 18px;font-size:14px;}
  .hero-cta .btn{flex:1 1 auto;}
  .stats{grid-template-columns:1fr;}
  .stat{border-left:0;border-top:1px solid var(--line);}
  .stat:first-child{border-top:0;}
  .cta-band{padding:40px 24px;border-radius:16px;}
  .cta-copy h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;padding-bottom:32px;}
  .footer-brand{grid-column:1/-1;}
  .float-cta{
    right:0;left:0;bottom:0;padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 20px -12px rgba(15,27,45,.4);
    justify-content:space-between;gap:12px;
  }
  .float-cta .pill{flex:1;justify-content:center;height:46px;padding:0 16px;}
  .float-cta .icon-btn{width:46px;height:46px;box-shadow:none;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .news-grid{grid-template-columns:1fr;}
  .news-card--lead{grid-column:span 1;}
}
@media (max-width:519px){
  .container{padding:0 18px;}
  .hero-trust{gap:8px 16px;}
  .bento{grid-template-columns:1fr;}
  .bento-wide{grid-column:span 1;}
  .hero-float{display:none;}
  .badge,.btn-block{width:100%;}
  .cta-band::after{display:none;}
  .footer-grid{grid-template-columns:1fr;}
}

/* roulang page: article */
:root{
  --c-primary:#1C6DF0;
  --c-primary-dark:#124FA8;
  --c-primary-light:#EAF1FE;
  --c-accent:#FF7A45;
  --c-success:#17B890;
  --c-warning:#F0A11C;
  --c-error:#E5484D;
  --c-title:#0F1B2D;
  --c-text:#52606D;
  --c-muted:#8A94A6;
  --c-border:#E6EAF2;
  --c-bg:#F5F8FC;
  --c-card:#FFFFFF;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-input:10px;
  --sh-sm:0 1px 2px rgba(15,27,45,.06);
  --sh-md:0 8px 24px -12px rgba(15,27,45,.14);
  --sh-lg:0 20px 48px -20px rgba(15,27,45,.20);
  --w:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--c-primary-dark);}
h1,h2,h3,h4{margin:0;color:var(--c-title);font-weight:700;letter-spacing:-.01em;line-height:1.35;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea,select{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--w);margin:0 auto;padding:0 32px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-md);}
.btn-primary:hover{background:#1560DA;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-lg);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-sm);}
.btn-ghost{background:#fff;color:var(--c-primary);border:1px solid rgba(28,109,240,.45);box-shadow:var(--sh-sm);}
.btn-ghost:hover{background:var(--c-primary-light);color:var(--c-primary-dark);transform:translateY(-1px);}
.btn-text{height:auto;padding:0;color:var(--c-primary);font-weight:600;}
.btn-text:hover{color:var(--c-primary-dark);}
.btn-text .arrow{display:inline-block;transition:transform .18s ease;}
.btn-text:hover .arrow{transform:translateX(2px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:999px;
  background:var(--c-primary-light);color:var(--c-primary-dark);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-accent{background:#FFF1E9;color:#C24E1E;}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:80;background:#fff;box-shadow:var(--sh-sm);}
.header-top{border-bottom:1px solid var(--c-border);}
.header-top-inner{display:flex;align-items:center;gap:20px;height:74px;transition:height .2s ease;}
.logo{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--c-title);letter-spacing:-.01em;}
.logo:hover{color:var(--c-title);}
.logo-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--c-primary),#3E8BFF);display:inline-flex;align-items:center;justify-content:center;box-shadow:var(--sh-sm);flex:0 0 auto;}
.logo-mark svg{width:20px;height:20px;}
.brand-slogan{margin:0;font-size:13px;color:var(--c-muted);padding-left:18px;border-left:1px solid var(--c-border);}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:14px;}
.search-box{display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;border:1px solid var(--c-border);border-radius:var(--r-input);background:#F8FAFE;transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;}
.search-box:focus-within{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(28,109,240,.12);}
.search-box svg{width:16px;height:16px;stroke:var(--c-muted);fill:none;stroke-width:2;flex:0 0 auto;}
.search-box input{width:170px;border:0;background:none;outline:none;font-size:14px;color:var(--c-title);}
.search-box input::placeholder{color:var(--c-muted);}
.header-text-link{font-size:14px;font-weight:600;color:var(--c-text);}
.header-text-link:hover{color:var(--c-primary);}
.nav-toggle{display:none;width:42px;height:42px;border-radius:var(--r-btn);border:1px solid var(--c-border);flex-direction:column;align-items:center;justify-content:center;gap:4px;}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-title);transition:transform .2s ease,opacity .2s ease;}
.channel-bar{background:#fff;transition:box-shadow .2s ease;}
.channel-inner{display:flex;align-items:center;gap:6px;height:56px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;transition:height .2s ease;}
.channel-inner::-webkit-scrollbar{display:none;}
.channel-link{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:999px;
  font-size:14px;font-weight:600;color:#5A6675;background:#F3F6FB;white-space:nowrap;
  transition:background-color .18s ease,color .18s ease;
}
.channel-link:hover{background:var(--c-primary-light);color:var(--c-primary-dark);}
.channel-link.is-active{background:var(--c-primary);color:#fff;box-shadow:var(--sh-sm);}
.site-header.is-compact .header-top-inner{height:62px;}
.site-header.is-compact .channel-inner{height:48px;}
.site-header.is-compact{box-shadow:var(--sh-md);}
.mobile-drawer{display:none;border-top:1px solid var(--c-border);background:#fff;padding:12px 0 18px;}
.mobile-drawer.is-open{display:block;}
.drawer-link{display:block;padding:12px 32px;font-size:15px;font-weight:600;color:var(--c-text);border-bottom:1px solid #F2F5FA;}
.drawer-link:hover{background:var(--c-primary-light);color:var(--c-primary-dark);}

/* ---------- 文章头部 ---------- */
.article-hero{position:relative;background:#fff;border-bottom:1px solid var(--c-border);overflow:hidden;}
.article-hero::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.14;}
.article-hero .container{position:relative;z-index:1;padding-top:30px;padding-bottom:46px;}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--c-muted);margin-bottom:22px;}
.breadcrumb a{color:var(--c-muted);font-weight:600;}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#C4CCDA;}
.breadcrumb .current{color:var(--c-text);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-hero h1{font-size:38px;max-width:900px;margin:16px 0 18px;}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:14px;color:var(--c-muted);}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#C9D2E0;}
.meta-item{display:inline-flex;align-items:center;gap:7px;}
.meta-item svg{width:15px;height:15px;stroke:var(--c-muted);fill:none;stroke-width:1.8;}

/* ---------- 正文布局 ---------- */
.article-section{padding:48px 0 72px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:40px;align-items:start;}
.article-main{max-width:820px;min-width:0;}
.article-card{background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);box-shadow:var(--sh-md);padding:40px 44px;}
.article-body{font-size:16px;color:var(--c-text);}
.article-body h2{position:relative;margin:44px 0 16px;padding-left:16px;font-size:24px;}
.article-body h2:first-child{margin-top:0;}
.article-body h2::before{content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:2px;background:var(--c-primary);}
.article-body h3{margin:28px 0 12px;font-size:18px;font-weight:600;}
.article-body p{margin:0 0 18px;line-height:1.8;}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px;}
.article-body ul li{position:relative;padding-left:16px;margin-bottom:9px;line-height:1.8;list-style:none;}
.article-body ul li::before{content:"";position:absolute;left:0;top:.74em;width:6px;height:6px;border-radius:1px;background:var(--c-primary);}
.article-body ol{list-style:decimal;}
.article-body ol li{margin-bottom:9px;line-height:1.8;}
.article-body blockquote{margin:0 0 22px;padding:16px 20px;background:#F7F9FD;border-left:3px solid var(--c-primary);border-radius:0 10px 10px 0;}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-img);margin:0 auto 10px;}
.article-body figure{margin:0 0 24px;}
.article-body figcaption{text-align:center;font-size:14px;color:var(--c-muted);}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 24px;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--c-border);padding:10px 14px;text-align:left;}
.article-body th{background:#F7F9FD;color:var(--c-title);font-weight:600;}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(28,109,240,.35);}
.article-body a:hover{border-bottom-color:var(--c-primary);}
.article-body strong{color:var(--c-title);}
.article-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;padding-top:24px;border-top:1px solid var(--c-border);}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;background:#F3F6FB;color:var(--c-text);font-size:13px;font-weight:600;}
.tag:hover{background:var(--c-primary-light);color:var(--c-primary-dark);}
.empty-state{padding:64px 20px;text-align:center;}
.empty-icon{width:56px;height:56px;margin:0 auto 18px;border-radius:50%;background:var(--c-primary-light);color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:700;}
.empty-state h3{font-size:20px;margin-bottom:10px;}
.empty-state p{margin-bottom:22px;font-size:15px;color:var(--c-muted);}

/* ---------- 侧栏 ---------- */
.article-side{position:sticky;top:130px;display:flex;flex-direction:column;gap:20px;}
.side-card{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);box-shadow:var(--sh-sm);padding:22px;}
.side-card h3{font-size:15px;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3::before{content:"";width:4px;height:14px;border-radius:2px;background:var(--c-primary);}
.toc-list li{margin-bottom:4px;}
.toc-list a{display:block;padding:7px 10px;border-radius:8px;font-size:13.5px;color:var(--c-text);line-height:1.5;border-left:2px solid transparent;}
.toc-list a:hover{background:#F5F8FC;color:var(--c-primary);}
.toc-list a.is-current{background:var(--c-primary-light);color:var(--c-primary-dark);border-left-color:var(--c-primary);font-weight:600;}
.side-help p{font-size:13.5px;color:var(--c-muted);margin-bottom:14px;line-height:1.7;}

/* ---------- 相关推荐 ---------- */
.related{margin-top:56px;}
.section-head{margin-bottom:26px;}
.section-head h2{font-size:26px;margin-bottom:10px;}
.section-head p{font-size:15px;color:var(--c-muted);}
.rec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.card{
  display:flex;flex-direction:column;background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--r-card);box-shadow:var(--sh-md);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-lg);border-color:rgba(28,109,240,.28);}
.card-media{position:relative;aspect-ratio:16/9;background:#EDF1F8;overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--c-muted);}
.card-body h3{font-size:16.5px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-body p{font-size:13.5px;color:var(--c-muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-link{margin-top:auto;font-size:13.5px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px;}

/* ---------- 上下篇 ---------- */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:34px;}
.post-nav-item{display:block;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);box-shadow:var(--sh-sm);padding:18px 22px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
.post-nav-item:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:rgba(28,109,240,.28);}
.post-nav-item.is-next{text-align:right;}
.post-nav-label{display:block;font-size:12.5px;font-weight:600;color:var(--c-muted);margin-bottom:6px;}
.post-nav-title{display:block;font-size:15px;font-weight:600;color:var(--c-title);line-height:1.5;}
.return-row{margin-top:26px;display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;background:#fff;border:1px dashed #CDD8E8;border-radius:var(--r-card);padding:18px 24px;}
.return-row p{font-size:14px;color:var(--c-muted);margin:0;}

/* ---------- 结尾 CTA ---------- */
.cta-band{position:relative;margin:0 0 0;padding:64px 0;background:linear-gradient(180deg,#F0F6FF,#FFFFFF);border-top:1px solid var(--c-border);overflow:hidden;}
.cta-band::after{content:"";position:absolute;right:-60px;top:-60px;width:300px;height:300px;background-image:radial-gradient(var(--c-primary) 1.5px,transparent 1.6px);background-size:16px 16px;opacity:.08;}
.cta-inner{position:relative;z-index:1;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;}
.cta-inner h2{font-size:28px;margin-bottom:10px;}
.cta-inner p{font-size:15.5px;color:var(--c-text);max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{background:#0F1B2D;color:#B9C3D3;padding:58px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1fr;gap:32px;}
.footer-brand .logo{color:#fff;font-size:17px;margin-bottom:16px;}
.footer-brand p{font-size:13.5px;line-height:1.8;color:#9BA8BC;max-width:320px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:13.5px;color:#9BA8BC;}
.footer-col ul li a:hover{color:#fff;}
.footer-col p{font-size:13.5px;color:#9BA8BC;margin-bottom:10px;line-height:1.7;}
.footer-bottom{margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:12.5px;color:#8A94A6;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{padding:0 24px;}
  .article-hero h1{font-size:34px;}
}
@media (max-width:1024px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;}
  .rec-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:991px){
  .brand-slogan{display:none;}
  .search-box{display:none;}
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .article-side{position:static;flex-direction:row;flex-wrap:wrap;}
  .side-card{flex:1 1 280px;}
  .article-card{padding:32px 28px;}
}
@media (max-width:768px){
  .header-top-inner{height:64px;gap:12px;}
  .logo{font-size:16px;}
  .logo-mark{width:30px;height:30px;}
  .header-text-link{display:none;}
  .nav-toggle{display:flex;}
  .article-hero .container{padding-top:24px;padding-bottom:34px;}
  .article-hero h1{font-size:26px;margin:14px 0 16px;}
  .breadcrumb .current{max-width:180px;}
  .article-section{padding:32px 0 56px;}
  .article-card{padding:26px 20px;}
  .article-body h2{font-size:21px;margin-top:34px;}
  .article-body h3{font-size:17px;}
  .section-head h2{font-size:22px;}
  .rec-grid{grid-template-columns:minmax(0,1fr);gap:18px;}
  .post-nav{grid-template-columns:1fr;}
  .post-nav-item.is-next{text-align:left;}
  .cta-band{padding:48px 0;}
  .cta-inner h2{font-size:23px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 160px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .article-hero h1{font-size:22px;}
  .meta-row{font-size:13px;gap:8px 14px;}
  .drawer-link{padding:12px 18px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .return-row{flex-direction:column;align-items:flex-start;}
  .btn-block-sm{width:100%;}
}

/* roulang page: category1 */
:root{
  --c-primary:#1C6DF0;
  --c-primary-dark:#124FA8;
  --c-primary-light:#EAF1FE;
  --c-accent:#FF7A45;
  --c-success:#17B890;
  --c-warn:#F0A11C;
  --c-error:#E5484D;
  --c-title:#0F1B2D;
  --c-text:#52606D;
  --c-muted:#8A94A6;
  --c-border:#E6EAF2;
  --c-bg:#F5F8FC;
  --c-card:#FFFFFF;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-input:10px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(15,27,45,.06);
  --sh-md:0 8px 24px -12px rgba(15,27,45,.14);
  --sh-lg:0 20px 48px -20px rgba(15,27,45,.20);
  --maxw:1200px;
  --sp-section:104px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Inter,Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea{font:inherit}
h1,h2,h3,h4{color:var(--c-title);margin:0;letter-spacing:-.01em;font-weight:650;line-height:1.3}
h1{font-size:40px;font-weight:700}
h2{font-size:28px}
h3{font-size:20px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--c-primary);color:#fff;padding:10px 18px;border-radius:0 0 var(--r-btn) 0;z-index:200}
.skip-link:focus{left:0}

.container{max-width:var(--maxw);margin:0 auto;padding:0 32px;width:100%}

/* ---------- header ---------- */
.site-header{background:#fff;position:relative;z-index:60}
.brand-bar{padding:14px 0}
.brand-inner{display:flex;align-items:center;gap:24px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:var(--c-title);white-space:nowrap}
.logo-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--c-primary),#3E8CFF);display:inline-flex;align-items:center;justify-content:center;box-shadow:var(--sh-sm);flex:0 0 auto}
.logo-mark svg{width:20px;height:20px}
.brand-tagline{font-size:13px;color:var(--c-muted);padding-left:20px;border-left:1px solid var(--c-border);white-space:nowrap}
.brand-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.search-box{display:flex;align-items:center;gap:8px;background:var(--c-bg);border:1px solid var(--c-border);border-radius:var(--r-pill);padding:6px 14px;transition:border-color .18s ease,box-shadow .18s ease}
.search-box:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(28,109,240,.12)}
.search-box svg{width:16px;height:16px;stroke:var(--c-muted);fill:none;stroke-width:1.8;flex:0 0 auto}
.search-box input{border:0;background:transparent;outline:none;width:150px;font-size:14px;color:var(--c-title)}
.search-box input::placeholder{color:var(--c-muted)}
.text-link{font-size:14px;color:var(--c-text);font-weight:500}
.text-link:hover{color:var(--c-primary)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-btn);padding:12px 24px;font-size:15px;font-weight:600;line-height:1.2;border:1px solid transparent;transition:transform .16s ease,background-color .16s ease,box-shadow .16s ease,color .16s ease,border-color .16s ease;white-space:nowrap}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-md)}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:var(--sh-lg)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-sm)}
.btn-secondary{background:#fff;color:var(--c-primary);border-color:rgba(28,109,240,.42)}
.btn-secondary:hover{background:var(--c-primary-light)}
.btn-ghost{color:var(--c-primary);padding:8px 4px;font-weight:600}
.btn-ghost .arrow{display:inline-block;transition:transform .18s ease}
.btn-ghost:hover .arrow{transform:translateX(2px)}
.btn-sm{padding:9px 18px;font-size:14px}
.nav-toggle{display:none;width:42px;height:42px;border-radius:var(--r-btn);border:1px solid var(--c-border);align-items:center;justify-content:center;background:#fff}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-title);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-title);border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.channel-bar{border-top:1px solid var(--c-border);background:#fff;position:sticky;top:0;z-index:70;transition:box-shadow .2s ease,padding .2s ease}
.channel-inner{display:flex;align-items:center;gap:10px;overflow-x:auto;padding:12px 0;scrollbar-width:none;-ms-overflow-style:none;transition:padding .2s ease}
.channel-inner::-webkit-scrollbar{display:none}
.channel-link{padding:9px 18px;border-radius:var(--r-pill);background:#F0F4FB;color:var(--c-text);font-size:15px;font-weight:500;white-space:nowrap;flex:0 0 auto}
.channel-link:hover{background:var(--c-primary-light);color:var(--c-primary)}
.channel-link.is-active{background:var(--c-primary);color:#fff;box-shadow:var(--sh-md)}
.channel-bar.is-stuck{box-shadow:var(--sh-md)}
.channel-bar.is-stuck .channel-inner{padding:8px 0}

.mobile-drawer{display:none}

/* ---------- hero ---------- */
.page-hero{position:relative;background:#0F1B2D;color:#fff;overflow:hidden}
.page-hero .hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;opacity:.5}
.page-hero .hero-veil{position:absolute;inset:0;background:linear-gradient(100deg,rgba(15,27,45,.92) 0%,rgba(15,27,45,.72) 48%,rgba(15,27,45,.42) 100%)}
.page-hero .hero-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:56px 56px}
.page-hero .container{position:relative;padding-top:64px;padding-bottom:64px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.7);margin-bottom:22px;flex-wrap:wrap}
.breadcrumb a{color:rgba(255,255,255,.86)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{color:var(--c-accent);font-weight:600}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);color:#fff;font-size:13px;padding:6px 14px;border-radius:var(--r-pill);margin-bottom:18px}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--c-success)}
.page-hero h1{color:#fff;max-width:820px}
.page-hero .hero-sub{margin-top:16px;font-size:17px;color:rgba(255,255,255,.82);max-width:660px;line-height:1.7}
.hero-cta{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.page-hero .btn-secondary{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.4)}
.page-hero .btn-secondary:hover{background:rgba(255,255,255,.18)}

/* ---------- stats bar ---------- */
.stats-strip{background:#fff;border-bottom:1px solid var(--c-border)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);padding:30px 0}
.stat{padding:0 26px;border-left:1px solid var(--c-border)}
.stat:first-child{border-left:0;padding-left:0}
.stat .num{font-size:32px;font-weight:700;color:var(--c-primary);letter-spacing:-.02em;line-height:1.2}
.stat .num small{font-size:16px;font-weight:600;margin-left:2px}
.stat .cap{font-size:13px;color:var(--c-muted);margin-top:4px}

/* ---------- main layout ---------- */
.section{padding:var(--sp-section) 0}
.section-tight{padding:72px 0}
.section-head{max-width:720px;margin-bottom:44px}
.section-head h2{margin-bottom:12px}
.section-head p{font-size:16px;color:var(--c-text)}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--c-primary);background:var(--c-primary-light);padding:5px 12px;border-radius:var(--r-pill);margin-bottom:14px}

.overview-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:56px;align-items:start}
.anchor-nav{position:sticky;top:96px;background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-sm)}
.anchor-nav h3{font-size:15px;margin-bottom:14px;color:var(--c-title)}
.anchor-nav ul{display:flex;flex-direction:column;gap:2px}
.anchor-link{display:block;padding:9px 12px;border-radius:var(--r-btn);font-size:14px;color:var(--c-text);border-left:3px solid transparent}
.anchor-link:hover{background:var(--c-bg);color:var(--c-primary)}
.anchor-link.is-active{background:var(--c-primary-light);color:var(--c-primary);font-weight:600;border-left-color:var(--c-primary)}
.anchor-note{margin-top:18px;padding-top:18px;border-top:1px dashed var(--c-border);font-size:13px;color:var(--c-muted);line-height:1.7}

.doc-block{background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);padding:36px;box-shadow:var(--sh-sm);margin-bottom:28px;scroll-margin-top:110px}
.doc-block h2{margin-bottom:16px;position:relative;padding-left:16px}
.doc-block h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--c-primary)}
.doc-block h3{margin:26px 0 10px;font-size:17px}
.doc-block p+p{margin-top:16px}
.doc-figure{margin-top:24px}
.doc-figure img{border-radius:var(--r-img);box-shadow:var(--sh-sm);width:100%;aspect-ratio:16/9;object-fit:cover}
.doc-figure figcaption{margin-top:10px;font-size:13px;color:var(--c-muted);text-align:center}
.check-list{margin-top:20px;display:grid;gap:12px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;line-height:1.7}
.check-list li svg{width:20px;height:20px;flex:0 0 auto;margin-top:3px;stroke:var(--c-success);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.tag{font-size:13px;padding:6px 14px;border-radius:var(--r-pill);background:var(--c-bg);border:1px solid var(--c-border);color:var(--c-text)}
.tag.is-hot{background:rgba(255,122,69,.12);border-color:rgba(255,122,69,.35);color:#C2470F;font-weight:600}

.step-list{margin-top:26px;display:grid;gap:18px}
.step{display:grid;grid-template-columns:44px minmax(0,1fr);gap:16px;align-items:start;padding:18px;border:1px solid var(--c-border);border-radius:var(--r-card);background:var(--c-bg)}
.step .idx{width:44px;height:44px;border-radius:50%;border:1px solid rgba(28,109,240,.4);color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-weight:700;background:#fff}
.step h3{font-size:16px;margin:0 0 6px}
.step p{font-size:14px}

.notice{margin-top:26px;display:flex;gap:14px;background:rgba(240,161,28,.09);border:1px solid rgba(240,161,28,.32);border-radius:var(--r-card);padding:18px 20px}
.notice svg{width:22px;height:22px;flex:0 0 auto;margin-top:2px;stroke:var(--c-warn);fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.notice p{font-size:14px;color:#7A5410}

.mini-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:24px}
.mini-card{border:1px solid var(--c-border);border-radius:var(--r-card);padding:20px;background:#fff;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.mini-card:hover{transform:translateY(-2px);box-shadow:var(--sh-lg);border-color:rgba(28,109,240,.2)}
.mini-card .ico{width:36px;height:36px;border-radius:10px;background:var(--c-primary-light);display:flex;align-items:center;justify-content:center;margin-bottom:12px}
.mini-card .ico svg{width:19px;height:19px;stroke:var(--c-primary);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.mini-card h3{font-size:16px;margin-bottom:6px}
.mini-card p{font-size:14px}

/* ---------- faq ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{background:var(--c-bg);border:1px solid var(--c-border);border-radius:var(--r-card);margin-bottom:12px;overflow:hidden;transition:box-shadow .2s ease,background-color .2s ease}
.faq-item.is-open{background:#fff;box-shadow:var(--sh-md)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;text-align:left;padding:18px 22px;min-height:56px;font-size:16px;font-weight:600;color:var(--c-title)}
.faq-icon{width:26px;height:26px;flex:0 0 auto;border-radius:50%;border:1px solid var(--c-border);display:flex;align-items:center;justify-content:center;color:var(--c-primary);font-weight:700;transition:transform .2s ease,background-color .2s ease}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--c-primary-light)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .22s ease}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a-inner p{padding:0 22px 20px;font-size:15px;color:var(--c-text)}

/* ---------- cta band ---------- */
.cta-band{position:relative;background:var(--c-primary-light);border-radius:24px;padding:56px;overflow:hidden;display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between}
.cta-band::after{content:"";position:absolute;right:-40px;top:-40px;width:260px;height:260px;background-image:radial-gradient(rgba(28,109,240,.28) 1.6px,transparent 1.6px);background-size:16px 16px;opacity:.6;pointer-events:none}
.cta-band .cta-text{position:relative;max-width:620px}
.cta-band h2{margin-bottom:10px}
.cta-band p{color:var(--c-text)}
.cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:14px}

/* ---------- footer ---------- */
.site-footer{margin-top:var(--sp-section);background:#0F1B2D;color:rgba(255,255,255,.72);padding:64px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr 1fr;gap:36px}
.footer-brand .logo{color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66)}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:14px}
.footer-col ul{display:grid;gap:9px}
.footer-col li a{font-size:14px;color:rgba(255,255,255,.7)}
.footer-col li a:hover{color:#fff}
.footer-col p{font-size:14px;color:rgba(255,255,255,.7);margin-bottom:8px}
.footer-bottom{margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.55)}

/* ---------- floating cta ---------- */
.float-cta{position:fixed;right:28px;bottom:28px;z-index:80;display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-pill);padding:8px 8px 8px 22px;box-shadow:var(--sh-lg);opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .24s ease,transform .24s ease,visibility .24s ease}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta span{font-size:14px;color:var(--c-text);font-weight:500}
.float-icon{width:40px;height:40px;border-radius:50%;background:var(--c-primary-light);display:flex;align-items:center;justify-content:center}
.float-icon svg{width:19px;height:19px;stroke:var(--c-primary);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  :root{--sp-section:80px}
  .overview-layout{grid-template-columns:220px minmax(0,1fr);gap:36px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;row-gap:32px}
}
@media (max-width:991px){
  h1{font-size:30px}
  h2{font-size:24px}
  .container{padding:0 24px}
  .brand-tagline{display:none}
  .search-box{display:none}
  .overview-layout{grid-template-columns:1fr;gap:28px}
  .anchor-nav{position:static;padding:16px}
  .anchor-nav ul{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:4px}
  .anchor-link{white-space:nowrap;border-left:0;border-bottom:3px solid transparent;border-radius:var(--r-pill);background:var(--c-bg)}
  .anchor-link.is-active{border-left:0;border-bottom-color:transparent}
  .anchor-note{display:none}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:24px 0;padding:26px 0}
  .stat:nth-child(3){border-left:0;padding-left:0}
  .cta-band{padding:38px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  :root{--sp-section:56px}
  body{font-size:15px}
  h1{font-size:28px}
  h2{font-size:22px}
  h3{font-size:18px}
  .container{padding:0 20px}
  .nav-toggle{display:flex}
  .text-link{display:none}
  .mobile-drawer{display:block;max-height:0;overflow:hidden;background:#fff;border-top:1px solid transparent;transition:max-height .26s ease}
  .mobile-drawer.is-open{max-height:520px;border-top-color:var(--c-border)}
  .mobile-drawer .drawer-inner{padding:18px 20px 26px;display:grid;gap:8px}
  .mobile-drawer a{padding:12px 14px;border-radius:var(--r-btn);background:var(--c-bg);font-size:15px;color:var(--c-title);font-weight:500}
  .mobile-drawer a.is-active{background:var(--c-primary);color:#fff}
  .page-hero .container{padding-top:44px;padding-bottom:44px}
  .hero-sub{font-size:15px}
  .hero-cta .btn{flex:1 1 100%}
  .doc-block{padding:24px 20px}
  .step{grid-template-columns:38px minmax(0,1fr);padding:16px}
  .step .idx{width:38px;height:38px}
  .mini-grid{grid-template-columns:1fr}
  .cta-band{padding:28px 22px;border-radius:18px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column}
  .float-cta{left:16px;right:16px;bottom:16px;padding:10px 12px 10px 18px;border-radius:16px;justify-content:space-between}
}
@media (max-width:479px){
  .stat{padding:0 16px}
  .stat .num{font-size:26px}
  .brand-actions .btn-sm{padding:9px 14px;font-size:13px}
  .logo{font-size:17px}
}

/* roulang page: category2 */
:root{
  --c-primary:#1C6DF0;
  --c-primary-dark:#124FA8;
  --c-primary-hover:#155FDB;
  --c-primary-light:#EAF1FE;
  --c-accent:#FF7A45;
  --c-success:#17B890;
  --c-warn:#F0A11C;
  --c-error:#E5484D;
  --c-heading:#0F1B2D;
  --c-text:#52606D;
  --c-muted:#8A94A6;
  --c-border:#E6EAF2;
  --c-bg:#F5F8FC;
  --c-card:#FFFFFF;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-input:10px;
  --sh-sm:0 1px 2px rgba(15,27,45,.06);
  --sh-md:0 8px 24px -12px rgba(15,27,45,.14);
  --sh-lg:0 20px 48px -20px rgba(15,27,45,.20);
  --container:1200px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Inter,system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--c-heading);font-weight:650;letter-spacing:-.01em;line-height:1.3}
h1{font-size:40px}
h2{font-size:28px}
h3{font-size:20px;font-weight:600}
h4{font-size:16px;font-weight:600}
p{margin:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse}
input{font:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}

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

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .16s ease,box-shadow .16s ease,background .16s ease,color .16s ease,border-color .16s ease;
  white-space:nowrap;
}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-md)}
.btn-primary:hover{background:var(--c-primary-hover);transform:translateY(-1px);box-shadow:var(--sh-lg)}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--sh-sm)}
.btn-outline{background:#fff;color:var(--c-primary);border-color:rgba(28,109,240,.45)}
.btn-outline:hover{background:var(--c-primary-light);transform:translateY(-1px);box-shadow:var(--sh-sm)}
.btn-outline:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--c-primary);padding:0 6px;height:auto}
.btn-ghost:hover{color:var(--c-primary-dark)}
.btn-ghost .arrow{transition:transform .18s ease;display:inline-block}
.btn-ghost:hover .arrow{transform:translateX(3px)}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:var(--c-primary-light);color:var(--c-primary);
  font-size:12px;font-weight:600;line-height:1.6;
}
.badge-accent{background:#FFF1EB;color:#D9552A}
.badge-success{background:#E6F7F2;color:#0E8E6E}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--c-primary);
  background:var(--c-primary-light);border-radius:999px;padding:5px 14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-primary)}

.section{padding:88px 0}
.section-alt{background:#fff;border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border)}
.section-head{max-width:720px;margin-bottom:44px}
.section-head h2{margin-top:16px}
.section-head p{margin-top:14px;font-size:16px;color:var(--c-text)}
.divider{height:1px;background:var(--c-border);border:0;margin:0}

/* ---------- 头部：品牌行 ---------- */
.site-header{position:relative;z-index:70}
.brand-bar{background:#fff;border-bottom:1px solid var(--c-border)}
.brand-inner{display:flex;align-items:center;gap:20px;min-height:74px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--c-heading);white-space:nowrap}
.logo-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 34px;
  background:linear-gradient(135deg,#1C6DF0,#124FA8);
  display:grid;place-items:center;box-shadow:var(--sh-md);
}
.logo-mark svg{width:20px;height:20px}
.brand-tagline{
  font-size:13px;color:var(--c-muted);
  padding-left:18px;border-left:1px solid var(--c-border);white-space:nowrap;
}
.brand-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.search-box{
  display:flex;align-items:center;gap:8px;
  background:var(--c-bg);border:1px solid var(--c-border);
  border-radius:999px;padding:0 14px;height:40px;width:230px;
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.search-box:focus-within{border-color:rgba(28,109,240,.55);background:#fff;box-shadow:0 0 0 3px rgba(28,109,240,.12)}
.search-box svg{width:16px;height:16px;flex:0 0 16px;stroke:var(--c-muted)}
.search-box input{border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--c-heading)}
.search-box input::placeholder{color:var(--c-muted)}
.link-minor{font-size:14px;color:var(--c-text);font-weight:500;transition:color .18s ease}
.link-minor:hover{color:var(--c-primary)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-btn);
  background:var(--c-bg);border:1px solid var(--c-border);cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-heading);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-heading)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- 头部：频道行 ---------- */
.channel-bar{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.98);
  border-bottom:1px solid var(--c-border);
  transition:box-shadow .22s ease,background .22s ease;
  backdrop-filter:saturate(150%) blur(6px);
}
.channel-bar.is-stuck{box-shadow:var(--sh-md)}
.channel-inner{
  display:flex;gap:8px;padding:10px 0;
  overflow-x:auto;scrollbar-width:none;
  transition:padding .22s ease;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 16px,#000 calc(100% - 16px),transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0,#000 16px,#000 calc(100% - 16px),transparent 100%);
}
.channel-inner::-webkit-scrollbar{display:none}
.channel-bar.is-stuck .channel-inner{padding:6px 0}
.channel-link{
  flex:0 0 auto;padding:8px 16px;border-radius:999px;
  background:var(--c-bg);color:#52606D;
  font-size:14px;font-weight:500;
  transition:background .18s ease,color .18s ease,box-shadow .18s ease,padding .22s ease;
}
.channel-bar.is-stuck .channel-link{padding:6px 14px}
.channel-link:hover{background:var(--c-primary-light);color:var(--c-primary)}
.channel-link.is-active{background:var(--c-primary);color:#fff;box-shadow:var(--sh-md)}
.channel-link.is-active:hover{background:var(--c-primary-hover);color:#fff}

/* ---------- 移动抽屉 ---------- */
.drawer{
  display:none;position:fixed;inset:0;z-index:90;
  background:#fff;padding:22px 20px 40px;overflow-y:auto;
}
.drawer.is-open{display:block}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--c-border);
  background:var(--c-bg);cursor:pointer;font-size:18px;line-height:1;color:var(--c-heading);
}
.drawer-group-title{font-size:12px;font-weight:700;color:var(--c-muted);letter-spacing:.08em;margin:18px 0 10px}
.drawer-link{
  display:block;padding:14px 16px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;color:var(--c-heading);
  border:1px solid var(--c-border);margin-bottom:10px;background:#fff;
  transition:background .18s ease,border-color .18s ease,color .18s ease;
}
.drawer-link:hover{background:var(--c-primary-light);border-color:rgba(28,109,240,.4)}
.drawer-link.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff}

/* ---------- 内页 Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;padding:72px 0 80px;
  background-image:linear-gradient(180deg,rgba(245,248,252,.94),rgba(245,248,252,.985)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--c-border);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:repeating-linear-gradient(0deg,#0F1B2D 0 1px,transparent 1px 8px),
                   repeating-linear-gradient(90deg,#0F1B2D 0 1px,transparent 1px 8px);
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.hero-copy h1{margin:18px 0 0}
.hero-sub{margin-top:18px;font-size:17px;color:var(--c-text);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.trust-row{display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:34px}
.trust-item{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--c-text)}
.trust-item svg{width:18px;height:18px;flex:0 0 18px}
.hero-figure{margin:0}
.hero-figure img{
  width:100%;aspect-ratio:3/2;object-fit:cover;
  border-radius:var(--r-card);box-shadow:var(--sh-lg);border:1px solid rgba(255,255,255,.9);
}
.hero-figure figcaption{margin-top:12px;font-size:13px;color:var(--c-muted);text-align:center}
.hero-stat{
  position:relative;z-index:1;display:flex;gap:0;flex-wrap:wrap;
  margin-top:48px;background:#fff;border:1px solid var(--c-border);
  border-radius:var(--r-card);box-shadow:var(--sh-sm);overflow:hidden;
}
.hero-stat .stat{
  flex:1 1 180px;padding:20px 24px;border-right:1px solid var(--c-border);
}
.hero-stat .stat:last-child{border-right:0}
.stat-num{font-size:28px;font-weight:700;color:var(--c-primary);line-height:1.2;letter-spacing:-.02em}
.stat-cap{font-size:13px;color:var(--c-muted);margin-top:4px}

/* ---------- 交错图文 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split + .split{margin-top:72px}
.split-media{margin:0}
.split-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-card);box-shadow:var(--sh-md);
}
.split.is-reverse .split-media{order:2}
.split.is-reverse .split-body{order:1}
.split-body h2{margin-top:14px}
.split-body p{margin-top:14px}
.check-list{margin-top:20px;display:grid;gap:10px}
.check-list li{position:relative;padding-left:26px;font-size:15px;color:var(--c-text)}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:14px;height:14px;border-radius:4px;
  background:var(--c-primary-light);
  box-shadow:inset 0 0 0 1.5px rgba(28,109,240,.55);
}
.check-list li::after{
  content:"";position:absolute;left:4px;top:13px;width:6px;height:3px;
  border-left:1.8px solid var(--c-primary);border-bottom:1.8px solid var(--c-primary);
  transform:rotate(-45deg);
}

/* ---------- 步骤时间线 ---------- */
.timeline{position:relative;max-width:800px;margin:0 auto}
.tl-item{position:relative;padding-left:78px;padding-bottom:34px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:23px;top:52px;bottom:0;width:2px;
  background:var(--c-border);
}
.tl-item:last-child::before{display:none}
.tl-num{
  position:absolute;left:0;top:0;width:48px;height:48px;border-radius:50%;
  background:#fff;border:2px solid var(--c-primary);color:var(--c-primary);
  display:grid;place-items:center;font-size:15px;font-weight:700;letter-spacing:-.02em;
  box-shadow:var(--sh-sm);
}
.tl-body{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:20px 24px;box-shadow:var(--sh-sm);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.tl-item:hover .tl-body{transform:translateY(-2px);box-shadow:var(--sh-lg);border-color:rgba(28,109,240,.28)}
.tl-body h3{font-size:18px}
.tl-body p{margin-top:8px;font-size:15px}
.tl-meta{margin-top:10px;font-size:13px;color:var(--c-muted)}

/* ---------- 环境要求表 ---------- */
.table-wrap{
  overflow-x:auto;border-radius:var(--r-card);background:#fff;
  border:1px solid var(--c-border);box-shadow:var(--sh-sm);
  -webkit-overflow-scrolling:touch;
}
.spec-table{width:100%;min-width:660px;font-size:15px}
.spec-table thead th{
  position:sticky;top:0;background:var(--c-bg);
  text-align:left;font-size:13px;font-weight:700;color:var(--c-heading);
  letter-spacing:.03em;padding:14px 22px;border-bottom:1px solid var(--c-border);
}
.spec-table tbody td{
  padding:16px 22px;border-bottom:1px solid var(--c-border);color:var(--c-text);
  vertical-align:top;
}
.spec-table tbody tr:nth-child(even){background:#FBFCFE}
.spec-table tbody tr:last-child td{border-bottom:0}
.spec-table tbody td:first-child{font-weight:600;color:var(--c-heading);white-space:nowrap}
.table-note{margin-top:16px;font-size:13px;color:var(--c-muted)}

/* ---------- 便签要点 ---------- */
.note-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.note{
  background:#fff;border:1px solid var(--c-border);border-left:4px solid var(--c-primary);
  border-radius:var(--r-card);padding:20px 24px;box-shadow:var(--sh-sm);
  transition:transform .18s ease,box-shadow .18s ease;
}
.note:hover{transform:translateY(-2px);box-shadow:var(--sh-md)}
.note h3{font-size:17px}
.note p{margin-top:8px;font-size:15px}
.note.is-accent{border-left-color:var(--c-accent)}
.note.is-success{border-left-color:var(--c-success)}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto;display:grid;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  overflow:hidden;transition:box-shadow .2s ease,border-color .2s ease;
}
.faq-item.is-open{box-shadow:var(--sh-md);border-color:rgba(28,109,240,.3)}
.faq-q{
  width:100%;min-height:58px;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:16px 22px;background:transparent;border:0;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--c-heading);text-align:left;
  transition:background .18s ease,color .18s ease;
}
.faq-q:hover{background:var(--c-primary-light);color:var(--c-primary-dark)}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 18px;transition:transform .2s ease}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease}
.faq-a p{padding:0 22px 20px;font-size:15px;color:var(--c-text)}

/* ---------- 结尾 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--c-primary-light);
  border-top:1px solid rgba(28,109,240,.16);
  border-bottom:1px solid rgba(28,109,240,.16);
  padding:64px 0;
}
.cta-band::before{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,69,.28),transparent 65%);
}
.cta-band::after{
  content:"";position:absolute;left:32px;bottom:24px;width:180px;height:64px;opacity:.16;
  background-image:radial-gradient(var(--c-primary) 1.6px,transparent 1.6px);
  background-size:14px 14px;
}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{max-width:620px}
.cta-inner p{margin-top:12px;font-size:16px;color:var(--c-text);max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:#0F1B2D;color:rgba(255,255,255,.68);padding:64px 0 28px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr 1fr;gap:36px}
.site-footer .logo{color:#fff;margin-bottom:16px}
.site-footer .logo-mark{background:linear-gradient(135deg,#2C7DFF,#124FA8)}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:360px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col p{margin-bottom:10px;color:rgba(255,255,255,.6)}
.footer-col a{color:rgba(255,255,255,.68);transition:color .18s ease}
.footer-col a:hover{color:#9CC2FF}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  h1{font-size:34px}
  h2{font-size:25px}
  .container{padding:0 24px}
  .hero-grid{gap:40px}
  .split{gap:40px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
}
@media (max-width:991px){
  .section{padding:72px 0}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-figure img{aspect-ratio:16/9}
  .split{grid-template-columns:1fr;gap:26px}
  .split.is-reverse .split-media{order:0}
  .split.is-reverse .split-body{order:0}
  .split-media img{aspect-ratio:16/9}
  .note-grid{grid-template-columns:1fr}
  .brand-tagline{display:none}
  .search-box{width:180px}
}
@media (max-width:767px){
  body{font-size:15px}
  h1{font-size:28px}
  h2{font-size:22px}
  h3{font-size:18px}
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
  .brand-inner{min-height:64px;gap:12px}
  .search-box{display:none}
  .link-minor{display:none}
  .nav-toggle{display:inline-flex}
  .channel-bar{display:none}
  .page-hero{padding:48px 0 56px}
  .hero-sub{font-size:16px}
  .hero-actions{gap:10px}
  .hero-actions .btn{flex:1 1 100%}
  .trust-row{gap:10px 18px;margin-top:26px}
  .hero-stat{margin-top:34px}
  .hero-stat .stat{flex:1 1 50%;border-right:0;border-bottom:1px solid var(--c-border);padding:16px 18px}
  .split + .split{margin-top:48px}
  .timeline{max-width:none}
  .tl-item{padding-left:60px;padding-bottom:24px}
  .tl-num{width:40px;height:40px;font-size:14px}
  .tl-item::before{left:19px;top:44px}
  .tl-body{padding:16px 18px}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .footer-brand{grid-column:1 / -1}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr}
  .badge{font-size:12px}
  .btn{width:100%}
  .btn-ghost{width:auto}
}

/* roulang page: category3 */
/* ================= 设计令牌 ================= */
:root{
  --c-primary:#1C6DF0;
  --c-primary-dark:#124FA8;
  --c-primary-light:#EAF1FE;
  --c-accent:#FF7A45;
  --c-success:#17B890;
  --c-warn:#F0A11C;
  --c-danger:#E5484D;

  --t-head:#0F1B2D;
  --t-body:#52606D;
  --t-muted:#8A94A6;

  --line:#E6EAF2;
  --bg:#F5F8FC;
  --card:#FFFFFF;

  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-in:10px;

  --sh-sm:0 1px 2px rgba(15,27,45,.06);
  --sh-md:0 8px 24px -12px rgba(15,27,45,.14);
  --sh-lg:0 20px 48px -20px rgba(15,27,45,.20);

  --container:1200px;
  --pad-x:32px;
}

/* ================= 基础 ================= */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--t-body);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
button,input,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--t-head);font-weight:600;line-height:1.35;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
figure{margin:0;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--pad-x);}

/* ================= 按钮 ================= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  border:1px solid transparent;font-size:15px;font-weight:600;
  cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease,color .18s ease;
}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-md);}
.btn-primary:hover{background:#155ed6;transform:translateY(-1px);box-shadow:var(--sh-lg);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-sm);}
.btn-outline{background:#fff;border-color:rgba(28,109,240,.45);color:var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-light);border-color:var(--c-primary);transform:translateY(-1px);}
.btn-oncolor{background:#fff;color:var(--c-primary-dark);box-shadow:0 10px 24px -12px rgba(0,0,0,.55);}
.btn-oncolor:hover{background:var(--c-primary-light);transform:translateY(-1px);}
.btn-oncolor-ghost{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.55);color:#fff;}
.btn-oncolor-ghost:hover{background:rgba(255,255,255,.2);}
.btn-ghost{background:transparent;color:var(--c-primary);height:auto;padding:0 4px;font-weight:600;}
.btn-ghost svg{transition:transform .18s ease;}
.btn-ghost:hover svg{transform:translateX(2px);}

/* ================= 徽章 / 标签 ================= */
.badge{display:inline-flex;align-items:center;gap:6px;background:var(--c-primary-light);color:var(--c-primary-dark);font-size:13px;font-weight:600;padding:5px 12px;border-radius:999px;}
.tag{display:inline-block;background:var(--c-primary-light);color:var(--c-primary-dark);font-size:12.5px;font-weight:600;padding:4px 10px;border-radius:999px;}

/* ================= 头部 ================= */
.site-header{position:sticky;top:0;z-index:80;background:#fff;}
.brand-bar{background:#fff;border-bottom:1px solid var(--line);overflow:hidden;max-height:120px;transition:max-height .26s ease,opacity .2s ease,border-color .2s ease;}
.brand-inner{display:flex;align-items:center;gap:20px;height:76px;transition:height .24s ease;}
.logo{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--t-head);white-space:nowrap;}
.logo-mark{
  width:34px;height:34px;flex:0 0 auto;border-radius:10px;
  background:linear-gradient(135deg,#3f86ff,var(--c-primary) 55%,var(--c-primary-dark));
  display:inline-flex;align-items:center;justify-content:center;box-shadow:var(--sh-sm);
}
.logo-mark svg{width:20px;height:20px;}
.brand-tagline{font-size:13px;color:var(--t-muted);padding-left:18px;border-left:1px solid var(--line);white-space:nowrap;}
.brand-actions{margin-left:auto;display:flex;align-items:center;gap:14px;}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:40px;width:208px;padding:0 14px;
  background:var(--bg);border:1px solid var(--line);border-radius:999px;
  transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.search-box:focus-within{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(28,109,240,.12);}
.search-box svg{width:16px;height:16px;flex:0 0 auto;color:var(--t-muted);}
.search-box input{border:0;background:transparent;outline:none;width:100%;font-size:14px;line-height:1;}
.search-box input::placeholder{color:var(--t-muted);}
.link-plain{font-size:14px;color:var(--t-body);}
.link-plain:hover{color:var(--c-primary);}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);background:#fff;cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle svg{width:20px;height:20px;color:var(--t-head);}

.channel-bar{background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease;}
.channel-inner{display:flex;gap:8px;padding:10px 0;overflow-x:auto;scrollbar-width:none;}
.channel-inner::-webkit-scrollbar{display:none;}
.channel-link{
  flex:0 0 auto;padding:8px 16px;border-radius:999px;
  font-size:14.5px;font-weight:500;color:#5b6675;
  background:var(--bg);border:1px solid transparent;
  transition:color .18s ease,background-color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.channel-link:hover{color:var(--c-primary);background:var(--c-primary-light);}
.channel-link.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff;box-shadow:0 8px 18px -10px rgba(28,109,240,.85);}

.site-header.is-stuck .brand-bar{max-height:0;opacity:0;border-bottom-color:transparent;}
.site-header.is-stuck .brand-inner{height:0;}
.site-header.is-stuck .channel-bar{box-shadow:var(--sh-md);}
.site-header.is-stuck .channel-inner{padding:6px 0;}

/* ================= 版面区块 ================= */
.section{padding:96px 0;scroll-margin-top:140px;}
.section--tint{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:720px;margin-bottom:44px;}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--c-primary);background:var(--c-primary-light);padding:5px 12px;border-radius:999px;margin-bottom:14px;}
.section-title{font-size:28px;}
.section-desc{margin-top:12px;font-size:16px;color:var(--t-body);}

/* ================= 面包屑 ================= */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--t-muted);flex-wrap:wrap;}
.breadcrumb a{color:var(--t-muted);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#c3cbd8;}
.breadcrumb .current{color:var(--t-head);font-weight:600;}

/* ================= 页头首屏 ================= */
.page-hero{
  position:relative;
  padding:44px 0 72px;
  background:
    radial-gradient(680px 320px at 88% 0%,rgba(28,109,240,.10),transparent 68%),
    linear-gradient(180deg,#ffffff 0%,#F5F8FC 100%);
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:linear-gradient(rgba(15,27,45,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(15,27,45,.6) 1px,transparent 1px);
  background-size:48px 48px;
}
.page-hero .container{position:relative;z-index:1;}
.page-hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center;margin-top:28px;}
.page-hero h1{font-size:40px;font-weight:700;margin:16px 0 0;}
.page-hero .lead{margin-top:18px;font-size:17px;max-width:560px;}
.hero-cta{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:28px;}
.hero-facts{display:flex;flex-wrap:wrap;gap:22px;margin-top:30px;}
.fact{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--t-body);}
.fact svg{width:18px;height:18px;color:var(--c-success);flex:0 0 auto;}
.page-hero-media img{
  width:100%;aspect-ratio:3/2;object-fit:cover;
  border-radius:16px;box-shadow:var(--sh-lg);border:1px solid var(--line);
}

/* ================= 标签筛选行 ================= */
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px;}
.chip{
  height:38px;padding:0 18px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:#5b6675;
  font-size:14px;font-weight:500;cursor:pointer;
  transition:color .18s ease,background-color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.chip:hover{color:var(--c-primary);border-color:rgba(28,109,240,.4);}
.chip.is-on{background:var(--c-primary);border-color:var(--c-primary);color:#fff;box-shadow:0 8px 18px -10px rgba(28,109,240,.85);}

/* ================= Bento 网格 ================= */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:20px;}
.bento-card{
  display:flex;flex-direction:column;gap:18px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.bento-card:hover{transform:translateY(-2px);box-shadow:var(--sh-lg);border-color:rgba(28,109,240,.22);}
.b-4{grid-column:span 4;}
.b-3{grid-column:span 3;}
.b-2{grid-column:span 2;}
.bento-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);}
.bento-body{display:flex;flex-direction:column;gap:10px;}
.bento-title{font-size:20px;}
.bento-body p{font-size:15px;}
.bento-icon{
  width:44px;height:44px;flex:0 0 auto;border-radius:12px;
  background:var(--c-primary-light);color:var(--c-primary-dark);
  display:inline-flex;align-items:center;justify-content:center;
}
.bento-icon svg{width:22px;height:22px;}
.bento-card--accent .bento-icon{background:#FFF0E9;color:#D9541F;}

/* ================= 图文交错 ================= */
.story-row{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;margin-bottom:72px;}
.story-row:last-child{margin-bottom:0;}
.story-row.is-reverse .story-media{order:2;}
.story-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:16px;box-shadow:var(--sh-md);border:1px solid var(--line);}
.story-body h3{font-size:22px;margin:14px 0 0;}
.story-body > p{margin-top:14px;}
.check-list{margin-top:20px;}
.check-list li{position:relative;padding-left:28px;margin-bottom:11px;font-size:15px;}
.check-list li::before{
  content:"";position:absolute;left:0;top:6px;width:17px;height:17px;border-radius:50%;
  background:rgba(23,184,144,.14);
}
.check-list li::after{
  content:"";position:absolute;left:5px;top:10px;width:7px;height:4px;
  border-left:2px solid var(--c-success);border-bottom:2px solid var(--c-success);
  transform:rotate(-45deg);
}

/* ================= 难度对比 ================= */
.meter-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.meter-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.meter-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:rgba(28,109,240,.22);}
.meter-head{display:flex;align-items:baseline;justify-content:space-between;gap:10px;margin-bottom:14px;}
.meter-head h3{font-size:17px;}
.meter-score{font-size:13px;font-weight:700;color:var(--c-accent);white-space:nowrap;}
.meter-track{height:8px;border-radius:999px;background:#EEF2F8;overflow:hidden;}
.meter-track i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,#3f86ff,var(--c-primary));}
.meter-card p{margin-top:14px;font-size:14px;color:var(--t-body);}
.meter-meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px;}
.meter-meta span{font-size:12px;color:var(--t-muted);background:var(--bg);border:1px solid var(--line);border-radius:999px;padding:3px 10px;}

/* ================= 步骤 ================= */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step;}
.step{
  position:relative;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 24px;box-shadow:var(--sh-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:rgba(28,109,240,.22);}
.step-num{
  width:42px;height:42px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-primary-light);border:2px solid rgba(28,109,240,.28);
  color:var(--c-primary-dark);font-weight:700;font-size:16px;margin-bottom:16px;
}
.step h3{font-size:17px;margin-bottom:10px;}
.step p{font-size:14.5px;}

/* ================= FAQ ================= */
.faq{max-width:900px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  margin-bottom:14px;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.is-open{border-color:rgba(28,109,240,.3);box-shadow:var(--sh-md);}
.faq-q{
  width:100%;min-height:64px;padding:16px 22px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:transparent;border:0;text-align:left;cursor:pointer;
  font-size:16.5px;font-weight:600;color:var(--t-head);
  transition:color .18s ease,background-color .18s ease;
}
.faq-q:hover{color:var(--c-primary);background:#FAFCFF;}
.faq-ico{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);background:#fff;color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;
  transition:transform .2s ease,background-color .2s ease,border-color .2s ease,color .2s ease;
}
.faq-ico svg{width:13px;height:13px;}
.faq-item.is-open .faq-ico{transform:rotate(45deg);background:var(--c-primary);border-color:var(--c-primary);color:#fff;}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .26s ease;}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
.faq-a > div{overflow:hidden;}
.faq-a p{padding:0 22px 22px;font-size:15px;}

/* ================= 结尾 CTA ================= */
.cta-band{padding:8px 0 96px;scroll-margin-top:140px;}
.cta-inner{
  position:relative;overflow:hidden;border-radius:20px;
  background:linear-gradient(118deg,var(--c-primary-dark) 0%,var(--c-primary) 58%,#3f86ff 100%);
  color:#fff;padding:56px 48px;box-shadow:var(--sh-lg);
  display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between;
}
.cta-inner::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.24) 1px,transparent 1px);
  background-size:18px 18px;
}
.cta-copy{position:relative;z-index:1;max-width:620px;}
.cta-copy h2{color:#fff;font-size:28px;}
.cta-copy p{margin-top:12px;color:rgba(255,255,255,.86);font-size:16px;}
.cta-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:14px;}

/* ================= 页脚 ================= */
.site-footer{background:#0E1B2E;color:#9FB0C7;font-size:14.5px;padding-top:64px;}
.site-footer .logo{color:#fff;font-size:17px;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr 1fr;gap:36px;padding-bottom:46px;}
.footer-brand p{margin-top:16px;max-width:340px;font-size:14px;line-height:1.85;color:#9FB0C7;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;}
.footer-col ul li{margin-bottom:9px;}
.footer-col a{color:#9FB0C7;}
.footer-col a:hover{color:#fff;}
.footer-col p{margin-bottom:8px;font-size:14px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:10px;
  justify-content:space-between;font-size:13px;color:#7C8DA6;
}

/* ================= 响应式 ================= */
@media (max-width:1199px){
  :root{--pad-x:24px;}
  .page-hero h1{font-size:34px;}
  .meter-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991px){
  .section{padding:72px 0;}
  .brand-tagline{display:none;}
  .page-hero{padding:36px 0 56px;}
  .page-hero-grid{grid-template-columns:1fr;gap:36px;}
  .page-hero h1{font-size:30px;}
  .page-hero .lead{font-size:16px;}
  .story-row{grid-template-columns:1fr;gap:28px;}
  .story-row.is-reverse .story-media{order:0;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .bento{grid-template-columns:repeat(4,1fr);}
  .b-4{grid-column:span 4;}
  .b-3{grid-column:span 4;}
  .b-2{grid-column:span 2;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:860px){
  .nav-toggle{display:inline-flex;}
  .search-box{width:40px;height:40px;padding:0;justify-content:center;background:transparent;border-color:var(--line);}
  .search-box input{display:none;}
  .link-plain{display:none;}
  .channel-bar{
    display:none;position:absolute;left:0;right:0;top:100%;
    background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--sh-lg);
  }
  .site-header.nav-open .channel-bar{display:block;}
  .channel-inner{flex-direction:column;gap:6px;padding:14px 0 20px;overflow:visible;}
  .channel-link{text-align:center;padding:11px 16px;border-radius:10px;}
}
@media (max-width:640px){
  :root{--pad-x:20px;}
  body{font-size:15px;line-height:1.75;}
  .section{padding:56px 0;scroll-margin-top:96px;}
  .section-title{font-size:22px;}
  .page-hero h1{font-size:26px;}
  .brand-inner{height:64px;}
  .logo{font-size:15.5px;}
  .logo-mark{width:30px;height:30px;}
  .logo-mark svg{width:18px;height:18px;}
  .bento{grid-template-columns:1fr;}
  .b-4,.b-3,.b-2{grid-column:span 1;}
  .meter-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .cta-inner{padding:36px 24px;border-radius:16px;}
  .cta-copy h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .story-media img{aspect-ratio:16/9;}
  .hero-cta .btn{flex:1 1 100%;}
  .page-hero-media img{border-radius:12px;}
}

/* roulang page: category4 */
:root{
  --c-primary:#1C6DF0;
  --c-primary-dark:#124FA8;
  --c-primary-light:#EAF1FE;
  --c-accent:#FF7A45;
  --c-success:#17B890;
  --c-warn:#F0A11C;
  --c-error:#E5484D;
  --c-title:#0F1B2D;
  --c-text:#52606D;
  --c-muted:#8A94A6;
  --c-line:#E6EAF2;
  --c-bg:#F5F8FC;
  --c-card:#FFFFFF;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-sm:0 1px 2px rgba(15,27,45,.06);
  --sh-md:0 8px 24px -12px rgba(15,27,45,.14);
  --sh-lg:0 20px 48px -20px rgba(15,27,45,.20);
  --container:1200px;
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,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:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease;}
h1,h2,h3,h4{margin:0;color:var(--c-title);font-weight:700;letter-spacing:-0.01em;line-height:1.35;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
.container{max-width:var(--container);margin:0 auto;padding:0 32px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .16s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--c-primary);color:#fff;box-shadow:var(--sh-md);
}
.btn-primary:hover{background:#1860D8;transform:translateY(-1px);box-shadow:var(--sh-lg);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-sm);}
.btn-ghost{
  background:#fff;color:var(--c-primary);border:1px solid rgba(28,109,240,.35);box-shadow:var(--sh-sm);
}
.btn-ghost:hover{background:var(--c-primary-light);border-color:var(--c-primary);transform:translateY(-1px);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600;
}
.btn-text .arrow{transition:transform .18s ease;}
.btn-text:hover .arrow{transform:translateX(2px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:999px;
  background:var(--c-primary-light);color:var(--c-primary-dark);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-accent{background:#FFF1EA;color:#C4491B;}
.badge-success{background:#E6F8F2;color:#0E8A6B;}
.badge-warn{background:#FEF4E2;color:#9A6408;}

/* ---------- 顶部品牌行 ---------- */
.site-header{position:relative;z-index:60;}
.brand-bar{background:#fff;border-bottom:1px solid var(--c-line);}
.brand-inner{display:flex;align-items:center;gap:20px;min-height:72px;}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-size:18px;font-weight:700;color:var(--c-title);letter-spacing:-0.01em;
  flex-shrink:0;
}
.logo:hover{color:var(--c-primary);}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(140deg,var(--c-primary),#3E8BFF);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-sm);
}
.logo-mark svg{width:20px;height:20px;}
.brand-tagline{
  font-size:13px;color:var(--c-muted);padding-left:18px;border-left:1px solid var(--c-line);
  letter-spacing:.02em;white-space:nowrap;
}
.brand-actions{margin-left:auto;display:flex;align-items:center;gap:14px;}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:38px;padding:0 12px;border:1px solid var(--c-line);border-radius:999px;
  background:var(--c-bg);transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.search-box:focus-within{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(28,109,240,.12);}
.search-box svg{width:16px;height:16px;color:var(--c-muted);flex-shrink:0;}
.search-box input{border:0;background:transparent;outline:none;width:150px;font-size:14px;color:var(--c-title);}
.search-box input::placeholder{color:var(--c-muted);}
.text-link{font-size:14px;color:var(--c-text);}
.text-link:hover{color:var(--c-primary);}
.menu-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--c-line);
  align-items:center;justify-content:center;background:#fff;
}
.menu-toggle svg{width:20px;height:20px;color:var(--c-title);}

/* ---------- 频道行 ---------- */
.channel-bar{
  position:sticky;top:0;z-index:55;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s ease,padding .2s ease;
}
.channel-bar.is-scrolled{box-shadow:var(--sh-md);}
.channel-inner{
  display:flex;align-items:center;gap:8px;
  padding:12px 0;overflow-x:auto;
  scrollbar-width:none;-ms-overflow-style:none;
  transition:padding .2s ease;
}
.channel-inner::-webkit-scrollbar{display:none;}
.channel-bar.is-scrolled .channel-inner{padding:8px 0;}
.channel-link{
  display:inline-flex;align-items:center;
  height:38px;padding:0 18px;border-radius:999px;
  font-size:14px;font-weight:600;color:#5A6474;background:#F1F5FB;
  white-space:nowrap;transition:all .18s ease;
}
.channel-link:hover{background:var(--c-primary-light);color:var(--c-primary-dark);}
.channel-link.is-active{background:var(--c-primary);color:#fff;box-shadow:var(--sh-md);}
.channel-link.is-active:hover{background:var(--c-primary-dark);}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);}
.breadcrumb a{color:var(--c-muted);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#C3CBD8;}
.breadcrumb .current{color:var(--c-title);font-weight:600;}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  background-image:linear-gradient(96deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.90) 46%,rgba(245,248,252,.62) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center right;
  border-bottom:1px solid var(--c-line);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(28,109,240,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(28,109,240,.05) 1px,transparent 1px);
  background-size:8px 8px;
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;
  padding:60px 0 68px;
}
.hero-copy h1{font-size:40px;margin:16px 0 18px;}
.hero-copy h1 .hl{color:var(--c-primary);}
.hero-sub{font-size:17px;color:var(--c-text);max-width:560px;line-height:1.8;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:22px;margin-top:30px;}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-text);}
.hero-trust svg{width:18px;height:18px;color:var(--c-success);flex-shrink:0;}
.hero-figure{
  background:#fff;border:1px solid var(--c-line);border-radius:16px;
  padding:12px;box-shadow:var(--sh-lg);
}
.hero-figure img{border-radius:var(--r-img);width:100%;aspect-ratio:3/2;object-fit:cover;}
.hero-figure figcaption{font-size:13px;color:var(--c-muted);margin-top:10px;padding:0 4px;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-alt{background:#fff;}
.section-head{max-width:660px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head h2{font-size:28px;margin:14px 0 12px;}
.section-head p{font-size:16px;color:var(--c-text);}
.section-head .eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;
  color:var(--c-primary);text-transform:uppercase;
}

/* ---------- 卡片网格 ---------- */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.card{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  display:flex;flex-direction:column;gap:12px;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-lg);border-color:rgba(28,109,240,.2);}
.card h3{font-size:19px;}
.card p{font-size:14.5px;color:var(--c-text);}
.card-icon{
  width:44px;height:44px;border-radius:12px;background:var(--c-primary-light);
  display:inline-flex;align-items:center;justify-content:center;color:var(--c-primary);
}
.card-icon svg{width:22px;height:22px;}
.card-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13px;color:var(--c-muted);}
.card-feature{
  grid-column:span 2;
  background:linear-gradient(140deg,#FFFFFF 0%,#F3F8FF 100%);
}
.card-feature img{border-radius:var(--r-img);aspect-ratio:16/9;object-fit:cover;width:100%;margin-top:4px;}

/* ---------- 数据条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);overflow:hidden;
}
.stat-item{padding:30px 26px;border-left:1px solid var(--c-line);}
.stat-item:first-child{border-left:0;}
.stat-num{
  font-family:var(--font-num);font-size:32px;font-weight:700;color:var(--c-primary);
  line-height:1.1;letter-spacing:-0.02em;
}
.stat-num small{font-size:16px;font-weight:600;margin-left:2px;}
.stat-label{font-size:13.5px;color:var(--c-muted);margin-top:10px;}

/* ---------- 图文交替 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split.reverse .split-media{order:2;}
.split h2{font-size:28px;margin:14px 0 16px;}
.split p{font-size:16px;color:var(--c-text);margin-bottom:14px;}
.split-media img{width:100%;border-radius:var(--r-card);border:1px solid var(--c-line);box-shadow:var(--sh-md);aspect-ratio:4/3;object-fit:cover;}
.check-list{margin-top:8px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:12px 0;border-top:1px dashed var(--c-line);font-size:15px;
}
.check-list li:first-child{border-top:0;}
.check-list .sq{
  width:9px;height:9px;border-radius:2px;background:var(--c-primary);
  margin-top:8px;flex-shrink:0;
}
.check-list strong{color:var(--c-title);font-weight:600;}

/* ---------- 步骤区 ---------- */
.steps-wrap{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start;}
.steps{position:relative;padding-left:8px;}
.steps::before{
  content:"";position:absolute;left:29px;top:16px;bottom:16px;width:1px;background:var(--c-line);
}
.step{position:relative;display:flex;gap:20px;padding:16px 0;}
.step-num{
  width:44px;height:44px;border-radius:50%;flex-shrink:0;
  border:1px solid rgba(28,109,240,.35);background:#fff;color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-weight:700;font-size:15px;
  box-shadow:var(--sh-sm);position:relative;z-index:1;
}
.step h3{font-size:18px;margin-bottom:6px;}
.step p{font-size:14.5px;}
.steps-figure img{width:100%;border-radius:var(--r-card);border:1px solid var(--c-line);box-shadow:var(--sh-md);aspect-ratio:16/9;object-fit:cover;}

/* ---------- 标签条 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.tag{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:999px;
  background:#fff;border:1px solid var(--c-line);color:#5A6474;font-size:14px;font-weight:600;
}
.tag:hover{border-color:var(--c-primary);color:var(--c-primary);}
.tag.is-on{background:var(--c-primary);border-color:var(--c-primary);color:#fff;box-shadow:var(--sh-md);}

/* ---------- 看点清单 ---------- */
.highlight-list{display:grid;gap:16px;}
.highlight-item{
  display:grid;grid-template-columns:6px 1fr;gap:20px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--sh-sm);transition:transform .2s ease,box-shadow .2s ease;
}
.highlight-item:hover{transform:translateY(-2px);box-shadow:var(--sh-lg);}
.highlight-item .bar{background:var(--c-accent);border-radius:999px;}
.highlight-item h3{font-size:17px;margin-bottom:6px;}
.highlight-item p{font-size:14.5px;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:900px;margin:0 auto;}
.faq-item{
  background:#F8FAFD;border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;transition:box-shadow .2s ease,background-color .2s ease,border-color .2s ease;
}
.faq-item[open]{background:#fff;box-shadow:var(--sh-md);border-color:rgba(28,109,240,.24);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:56px;padding:16px 22px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--c-title);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{
  width:26px;height:26px;flex-shrink:0;border-radius:8px;background:var(--c-primary-light);
  display:inline-flex;align-items:center;justify-content:center;
  transition:transform .2s ease,background-color .2s ease;
}
.faq-icon svg{width:14px;height:14px;color:var(--c-primary);}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:var(--c-primary);}
.faq-item[open] .faq-icon svg{color:#fff;}
.faq-body{padding:0 22px 20px;font-size:15px;color:var(--c-text);}

/* ---------- 结尾 CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--c-primary-light);
  border-top:1px solid rgba(28,109,240,.14);
  border-bottom:1px solid rgba(28,109,240,.14);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(28,109,240,.16) 1px,transparent 1px);
  background-size:16px 16px;opacity:.6;
}
.cta-inner{
  position:relative;z-index:2;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:56px 0;flex-wrap:wrap;
}
.cta-inner h2{font-size:26px;margin-bottom:8px;}
.cta-inner p{font-size:15.5px;color:var(--c-text);max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-title);color:#B9C3D3;margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1fr;gap:36px;
  padding:64px 0 40px;
}
.footer-brand .logo{color:#fff;margin-bottom:16px;}
.footer-brand .logo:hover{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.8;color:#93A0B4;max-width:320px;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{display:grid;gap:10px;}
.footer-col li a{font-size:14px;color:#A7B2C4;}
.footer-col li a:hover{color:#fff;}
.footer-col p{font-size:14px;color:#A7B2C4;margin-bottom:8px;}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:#8291A6;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{padding:0 26px;}
  .hero-copy h1{font-size:34px;}
  .grid-4{grid-template-columns:repeat(3,1fr);}
  .brand-tagline{display:none;}
}
@media (max-width:991px){
  .section{padding:72px 0;}
  .hero-inner{grid-template-columns:1fr;gap:36px;padding:48px 0 56px;}
  .hero-copy h1{font-size:32px;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .card-feature{grid-column:span 2;}
  .split,.steps-wrap{grid-template-columns:1fr;gap:32px;}
  .split.reverse .split-media{order:0;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .stat-item:nth-child(3){border-left:0;}
  .stat-item:nth-child(n+3){border-top:1px solid var(--c-line);}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px;}
  .search-box input{width:110px;}
}
@media (max-width:767px){
  body{font-size:15px;}
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .brand-inner{min-height:62px;gap:12px;}
  .brand-tagline,.text-link,.search-box{display:none;}
  .menu-toggle{display:inline-flex;}
  .channel-bar{position:static;}
  .channel-inner{display:none;}
  .channel-bar.is-open .channel-inner{
    display:flex;flex-direction:column;align-items:stretch;gap:8px;padding:12px 0 18px;overflow:visible;
  }
  .channel-link{justify-content:flex-start;padding:0 16px;}
  .hero-copy h1{font-size:28px;}
  .hero-sub{font-size:15.5px;}
  .section-head h2,.split h2{font-size:22px;}
  .grid-4,.grid-3,.grid-2{grid-template-columns:1fr;}
  .card-feature{grid-column:span 1;}
  .stat-strip{grid-template-columns:1fr;}
  .stat-item{border-left:0;border-top:1px solid var(--c-line);}
  .stat-item:first-child{border-top:0;}
  .cta-inner{padding:44px 0;flex-direction:column;align-items:flex-start;}
  .footer-bottom{flex-direction:column;}
  .steps::before{left:21px;}
  .step-num{width:40px;height:40px;}
}
@media (max-width:479px){
  .hero-actions .btn{width:100%;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .btn{padding:0 18px;}
  .card{padding:22px;}
}

/* roulang page: category5 */
:root{
  --c-primary:#1C6DF0;
  --c-primary-dark:#124FA8;
  --c-primary-light:#EAF1FE;
  --c-accent:#FF7A45;
  --c-success:#17B890;
  --c-warning:#F0A11C;
  --c-error:#E5484D;
  --c-title:#0F1B2D;
  --c-text:#52606D;
  --c-muted:#8A94A6;
  --c-border:#E6EAF2;
  --c-bg:#F5F8FC;
  --c-card:#FFFFFF;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-input:10px;
  --sh-sm:0 1px 2px rgba(15,27,45,.06);
  --sh-md:0 8px 24px -12px rgba(15,27,45,.14);
  --sh-lg:0 20px 48px -20px rgba(15,27,45,.20);
  --wrap:1200px;
  --sec:104px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--c-title);font-weight:700;letter-spacing:-.01em;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .18s ease}
img{max-width:100%;display:block;height:auto}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 32px}

/* ============ 按钮 / 标签 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:background-color .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-md)}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:var(--sh-lg)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-sm)}
.btn-outline{background:#fff;color:var(--c-primary);border:1px solid var(--c-primary)}
.btn-outline:hover{background:var(--c-primary-light)}
.btn-ghost{color:var(--c-primary);padding:0 4px;height:auto}
.btn-ghost span{transition:transform .18s ease}
.btn-ghost:hover span{transform:translateX(2px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:var(--c-primary-light);color:var(--c-primary-dark);
  font-size:12px;font-weight:600;line-height:1.6;
}
.badge-accent{background:#FFF1EA;color:#C24A16}
.badge-success{background:#E6F8F2;color:#0E8267}

/* ============ 顶部品牌行 ============ */
.site-header{position:relative;z-index:60;background:#fff}
.top-bar{border-bottom:1px solid var(--c-border)}
.top-inner{display:flex;align-items:center;gap:24px;min-height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:var(--c-title);letter-spacing:-.01em}
.logo-mark{
  width:34px;height:34px;flex:none;border-radius:10px;
  background:var(--c-primary);display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-md);
}
.logo-mark svg{width:20px;height:20px}
.brand-tagline{
  font-size:13px;color:var(--c-muted);padding-left:24px;border-left:1px solid var(--c-border);
}
.top-actions{margin-left:auto;display:flex;align-items:center;gap:16px}
.search-box{display:flex;align-items:center;gap:8px;background:var(--c-bg);border:1px solid var(--c-border);border-radius:999px;padding:0 14px;height:40px;transition:border-color .18s ease,box-shadow .18s ease}
.search-box:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(28,109,240,.12)}
.search-box svg{width:16px;height:16px;flex:none;stroke:var(--c-muted)}
.search-box input{border:none;background:none;outline:none;width:170px;font-size:14px}
.link-minor{font-size:14px;font-weight:600;color:var(--c-text)}
.link-minor:hover{color:var(--c-primary)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--c-border);
  align-items:center;justify-content:center;background:#fff;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-title);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-title)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ============ 频道行 ============ */
.channel-bar{background:#fff;border-bottom:1px solid var(--c-border);transition:box-shadow .2s ease,padding .2s ease}
.channel-bar.is-sticky{position:fixed;top:0;left:0;right:0;box-shadow:var(--sh-md);padding:2px 0;z-index:70}
.channel-inner{display:flex;align-items:center;gap:10px;height:58px;overflow-x:auto;scrollbar-width:none}
.channel-inner::-webkit-scrollbar{display:none}
.channel-link{
  flex:none;padding:8px 16px;border-radius:999px;font-size:14.5px;font-weight:600;
  color:var(--c-text);background:var(--c-bg);border:1px solid transparent;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.channel-link:hover{color:var(--c-primary);border-color:rgba(28,109,240,.28);background:#fff}
.channel-link.is-active{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}
.channel-link.is-active:hover{color:#fff}

/* 移动抽屉 */
.mobile-drawer{
  display:none;border-bottom:1px solid var(--c-border);background:#fff;
  padding:12px 0 18px;
}
.mobile-drawer.is-open{display:block}
.mobile-drawer .container{display:flex;flex-direction:column;gap:6px}
.mobile-drawer a{padding:12px 14px;border-radius:10px;font-weight:600;color:var(--c-title);background:var(--c-bg)}
.mobile-drawer a.is-active{background:var(--c-primary);color:#fff}

/* ============ 页面 Hero ============ */
.page-hero{
  position:relative;
  background-image:linear-gradient(180deg,rgba(255,255,255,.94) 0%,rgba(245,248,252,.97) 100%),url('/assets/images/backpic/back-3.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--c-border);
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;
  background-image:linear-gradient(rgba(15,27,45,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(15,27,45,.6) 1px,transparent 1px);
  background-size:8px 8px;
}
.hero-inner{position:relative;z-index:2;padding:56px 0 64px;max-width:820px}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);margin-bottom:20px}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{opacity:.6}
.crumb .now{color:var(--c-text);font-weight:600;max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.page-hero h1{font-size:40px;line-height:1.25;margin-bottom:16px}
.page-hero .lede{font-size:17px;max-width:660px;color:var(--c-text)}
.hero-search{margin-top:32px;display:flex;gap:12px;background:#fff;border:1px solid var(--c-border);border-radius:16px;padding:12px;box-shadow:var(--sh-md);max-width:720px}
.hero-search .field-wrap{flex:1;display:flex;align-items:center;gap:10px;padding:0 12px}
.hero-search svg{width:20px;height:20px;stroke:var(--c-primary);flex:none}
.hero-search input{flex:1;border:none;outline:none;background:none;height:48px;font-size:16px}
.hero-search input::placeholder{color:var(--c-muted)}
.hero-hints{margin-top:18px;display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:13.5px;color:var(--c-muted)}
.hero-hints .keyword{color:var(--c-primary-dark);background:#fff;border:1px solid var(--c-border);border-radius:999px;padding:3px 12px;font-weight:600}
.hero-hints .keyword:hover{border-color:var(--c-primary);color:var(--c-primary)}

/* ============ 板块通用 ============ */
main{display:block}
.section{padding:var(--sec) 0}
.section-tight{padding:72px 0}
.section-alt{background:#fff;border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border)}
.section-head{max-width:720px;margin-bottom:48px}
.section-head h2{font-size:28px;margin-bottom:14px}
.section-head p{font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.06em;
  color:var(--c-primary);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--c-accent);border-radius:2px}

/* ============ 支持通道数据条 ============ */
.channel-strip{
  background:#fff;border-bottom:1px solid var(--c-border);
}
.channel-strip .container{padding-top:36px;padding-bottom:36px}
.strip-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.strip-item{padding:6px 26px;border-left:1px solid var(--c-border)}
.strip-item:first-child{border-left:none;padding-left:0}
.strip-item .num{font-size:32px;font-weight:700;color:var(--c-primary);letter-spacing:-.02em;line-height:1.2}
.strip-item .num small{font-size:15px;font-weight:600;margin-left:2px}
.strip-item .label{font-size:13px;color:var(--c-muted);margin-top:6px}
.strip-item .title{font-size:15px;font-weight:700;color:var(--c-title);margin-bottom:6px}

/* ============ FAQ 分组 ============ */
.faq-layout{display:grid;grid-template-columns:260px 1fr;gap:56px;align-items:start}
.faq-nav{position:sticky;top:120px;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);padding:18px;box-shadow:var(--sh-sm)}
.faq-nav h3{font-size:14px;color:var(--c-muted);font-weight:600;margin-bottom:12px;letter-spacing:.02em}
.faq-nav a{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 12px;border-radius:10px;font-size:14.5px;font-weight:600;color:var(--c-text)}
.faq-nav a:hover{background:var(--c-primary-light);color:var(--c-primary-dark)}
.faq-nav a .count{font-size:12px;color:var(--c-muted);font-weight:500}
.faq-group{margin-bottom:44px;scroll-margin-top:130px}
.faq-group:last-child{margin-bottom:0}
.faq-group-head{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.faq-group-head h3{font-size:20px}
.faq-item{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  margin-bottom:12px;overflow:hidden;transition:box-shadow .2s ease,border-color .2s ease;
}
.faq-item:hover{border-color:rgba(28,109,240,.28)}
.faq-item[open]{box-shadow:var(--sh-md);border-color:rgba(28,109,240,.3)}
.faq-item summary{
  min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:16px 22px;cursor:pointer;list-style:none;font-size:16px;font-weight:600;color:var(--c-title);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:none;width:28px;height:28px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-primary-light);color:var(--c-primary);font-size:19px;font-weight:600;line-height:1;
  transition:transform .2s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{padding:0 22px 20px;font-size:15.5px;color:var(--c-text)}
.faq-body p+p{margin-top:12px}
.faq-body ul{margin-top:12px;display:flex;flex-direction:column;gap:8px}
.faq-body li{position:relative;padding-left:20px}
.faq-body li::before{content:"";position:absolute;left:2px;top:11px;width:7px;height:7px;background:var(--c-primary);border-radius:2px;opacity:.55}

/* ============ 图文帮助块 ============ */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.split-media{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-lg)}
.split-media img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:var(--r-card)}
.split-media .tag-float{
  position:absolute;left:18px;bottom:18px;background:rgba(255,255,255,.94);
  border-radius:999px;padding:6px 14px;font-size:13px;font-weight:700;color:var(--c-primary-dark);
  box-shadow:var(--sh-sm);
}
.split-text h2{font-size:28px;margin-bottom:16px}
.split-text>p{margin-bottom:26px}
.check-list{display:flex;flex-direction:column;gap:18px}
.check-list li{display:flex;gap:14px;align-items:flex-start}
.check-list .idx{
  flex:none;width:34px;height:34px;border-radius:50%;border:1px solid var(--c-primary);
  color:var(--c-primary);font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.check-list h4{font-size:16px;margin-bottom:4px}
.check-list p{font-size:14.5px}

/* ============ 表单 ============ */
.form-card{
  background:#fff;border:1px solid var(--c-border);border-radius:18px;
  box-shadow:var(--sh-md);padding:40px;max-width:920px;margin:0 auto;
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.field{display:flex;flex-direction:column;gap:8px}
.field-full{grid-column:1 / -1}
.field label{font-size:14px;font-weight:600;color:var(--c-title)}
.field label .req{color:var(--c-error);margin-left:2px}
.field input,.field select,.field textarea{
  height:44px;border:1px solid var(--c-border);border-radius:var(--r-input);
  padding:0 14px;background:#fff;transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:auto;min-height:136px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(28,109,240,.14);
}
.field .field-error{display:none;font-size:13.5px;color:var(--c-error)}
.field.is-invalid input,.field.is-invalid textarea,.field.is-invalid select{border-color:var(--c-error)}
.field.is-invalid .field-error{display:block}
.form-foot{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:26px}
.form-foot .note{font-size:13.5px;color:var(--c-muted)}
.form-alert{
  display:none;margin-top:20px;padding:14px 18px;border-radius:12px;font-size:14.5px;font-weight:600;
}
.form-alert.ok{display:block;background:#E6F8F2;color:#0E8267;border:1px solid rgba(23,184,144,.35)}
.form-alert.bad{display:block;background:#FDEDEE;color:#B3282C;border:1px solid rgba(229,72,77,.35)}

/* ============ CTA 带 ============ */
.cta-band{position:relative;overflow:hidden;background:var(--c-primary-light);border-top:1px solid var(--c-border)}
.cta-band::before{
  content:"";position:absolute;right:-60px;top:-40px;width:320px;height:320px;
  background-image:radial-gradient(var(--c-primary) 2px,transparent 2px);
  background-size:18px 18px;opacity:.16;
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;padding:64px 0}
.cta-inner h2{font-size:26px;margin-bottom:10px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:#0F1B2D;color:#B9C3D3;padding:72px 0 28px;font-size:14px}
.site-footer .logo{color:#fff;font-size:18px;margin-bottom:16px}
.site-footer .footer-brand p{font-size:14px;line-height:1.85;color:#98A4B8;max-width:340px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1fr;gap:40px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col p{margin-bottom:8px;color:#98A4B8}
.footer-col a{color:#B9C3D3}
.footer-col a:hover{color:var(--c-primary)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#8A94A6;
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .container{padding:0 24px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
}
@media (max-width:1024px){
  :root{--sec:80px}
  .brand-tagline{display:none}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .faq-nav{position:static;display:flex;flex-wrap:wrap;gap:8px;padding:14px}
  .faq-nav h3{width:100%;margin-bottom:4px}
  .faq-nav a{background:var(--c-bg);padding:8px 14px}
  .faq-nav a .count{display:none}
  .split{grid-template-columns:1fr;gap:36px}
  .strip-grid{grid-template-columns:repeat(2,1fr);gap:26px 0}
  .strip-item:nth-child(3){border-left:none;padding-left:0}
  .page-hero h1{font-size:34px}
}
@media (max-width:900px){
  .search-box{display:none}
  .nav-toggle{display:inline-flex}
  .channel-bar{display:none}
  .top-inner{min-height:64px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  :root{--sec:56px}
  body{font-size:15px}
  .container{padding:0 20px}
  .page-hero h1{font-size:28px}
  .page-hero .lede{font-size:15.5px}
  .hero-inner{padding:40px 0 48px}
  .hero-search{flex-direction:column;padding:14px}
  .hero-search .field-wrap{padding:0}
  .hero-search .btn{width:100%}
  .section-head h2,.split-text h2,.cta-inner h2{font-size:22px}
  .section-head{margin-bottom:32px}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:48px 0}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .form-card{padding:24px}
  .form-grid{grid-template-columns:1fr;gap:18px}
  .form-foot .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column}
  .strip-grid{grid-template-columns:1fr;gap:22px}
  .strip-item{border-left:none;padding:0 0 20px;border-bottom:1px solid var(--c-border)}
  .strip-item:last-child{border-bottom:none;padding-bottom:0}
}
@media (max-width:520px){
  .top-actions .link-minor{display:none}
  .logo{font-size:17px}
  .faq-item summary{font-size:15px;padding:14px 16px}
  .faq-body{padding:0 16px 18px}
  .badge{font-size:11.5px}
}