/* roulang page: index */
:root{
  --c-bg:#f4f6fc;
  --c-surface:#ffffff;
  --c-surface-2:#eef2fb;
  --c-ink:#0e1a33;
  --c-ink-2:#33456a;
  --c-muted:#6d7c9b;
  --c-line:#e2e8f5;
  --c-brand:#2757f5;
  --c-brand-dark:#1a3fc4;
  --c-brand-soft:#e8eeff;
  --c-accent:#ff7a45;
  --c-accent-soft:#fff0e9;
  --c-dark:#0a1226;
  --c-dark-2:#141f3d;
  --radius-xs:6px;
  --radius-s:10px;
  --radius:16px;
  --radius-l:26px;
  --shadow-xs:0 1px 3px rgba(14,26,51,.06);
  --shadow-s:0 6px 18px rgba(14,26,51,.07);
  --shadow:0 16px 40px rgba(14,26,51,.09);
  --shadow-l:0 30px 70px rgba(14,26,51,.16);
  --maxw:1200px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.2px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
:focus-visible{outline:3px solid rgba(39,87,245,.45);outline-offset:2px;border-radius:var(--radius-xs);}
.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 20px;
}
.section{padding:78px 0;}
.section-sm{padding:52px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:1.6px;
  color:var(--c-brand);
  background:var(--c-brand-soft);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.eyebrow.accent{color:#c94f1f;background:var(--c-accent-soft);}
.section-title{
  font-size:clamp(24px,3.2vw,34px);
  line-height:1.35;font-weight:800;letter-spacing:.4px;
}
.section-sub{margin-top:14px;color:var(--c-ink-2);font-size:16px;}
.muted{color:var(--c-muted);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.9);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-s);background:rgba(255,255,255,.97);}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;min-height:72px;
}
.brand{display:flex;align-items:center;gap:12px;min-width:0;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  padding:9px 14px;border-radius:12px;
  background:linear-gradient(135deg,var(--c-brand),#5b3cff);
  color:#fff;font-weight:800;font-size:17px;letter-spacing:1px;
  box-shadow:0 8px 20px rgba(39,87,245,.28);
  white-space:nowrap;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;min-width:0;}
.brand-name{font-size:15px;font-weight:700;white-space:nowrap;}
.brand-sub{font-size:12px;color:var(--c-muted);white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;
  padding:10px 14px;border-radius:10px;
  font-size:15px;font-weight:600;color:var(--c-ink-2);
  white-space:nowrap;
}
.nav-link:hover{color:var(--c-brand);background:var(--c-brand-soft);}
.nav-link.is-active{color:var(--c-brand);background:var(--c-brand-soft);}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:18px;height:3px;border-radius:3px;background:var(--c-brand);
}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--c-line);background:#fff;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink);transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:12px;
  font-size:15px;font-weight:700;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{
  background:linear-gradient(135deg,var(--c-brand),#5b3cff);
  color:#fff;box-shadow:0 12px 26px rgba(39,87,245,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(39,87,245,.34);}
.btn-ghost{
  background:#fff;color:var(--c-ink);border-color:var(--c-line);box-shadow:var(--shadow-xs);
}
.btn-ghost:hover{border-color:var(--c-brand);color:var(--c-brand);transform:translateY(-2px);}
.btn-accent{
  background:linear-gradient(135deg,#ff8a52,#ff5f2e);
  color:#fff;box-shadow:0 12px 26px rgba(255,95,46,.28);
}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(255,95,46,.34);}
.btn-light{background:#fff;color:var(--c-dark);box-shadow:0 12px 26px rgba(0,0,0,.16);}
.btn-light:hover{transform:translateY(-2px);}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}
.btn:active{transform:translateY(0);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;
  font-size:12px;font-weight:700;letter-spacing:.4px;
  background:var(--c-brand-soft);color:var(--c-brand-dark);
}
.badge-accent{background:var(--c-accent-soft);color:#c94f1f;}
.badge-dark{background:rgba(255,255,255,.14);color:#fff;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 13px;border-radius:999px;
  background:#fff;border:1px solid var(--c-line);
  font-size:13px;color:var(--c-ink-2);font-weight:600;
}
.tag:hover{border-color:var(--c-brand);color:var(--c-brand);}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;overflow:hidden;
  color:#fff;
  background-color:var(--c-dark);
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  padding:86px 0 74px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(110deg,rgba(8,15,33,.94) 0%,rgba(10,20,45,.86) 45%,rgba(24,18,60,.72) 100%);
}
.hero::after{
  content:"";position:absolute;right:-160px;top:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(91,60,255,.55),rgba(91,60,255,0) 68%);
  pointer-events:none;
}
.hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:center;}
.hero h1{
  font-size:clamp(28px,4vw,46px);
  line-height:1.28;font-weight:800;letter-spacing:.6px;
}
.hero h1 .hl{
  background:linear-gradient(120deg,#8ab4ff,#c7b6ff);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{
  margin-top:20px;max-width:620px;
  font-size:16.5px;line-height:1.9;color:rgba(255,255,255,.84);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-hints{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.hero-hint{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:999px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);
  font-size:13.5px;color:rgba(255,255,255,.9);
}
.dot{width:7px;height:7px;border-radius:50%;background:#6ff0b8;box-shadow:0 0 0 4px rgba(111,240,184,.16);}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,1fr);gap:14px;
  margin-top:38px;padding-top:28px;border-top:1px solid rgba(255,255,255,.14);
}
.hero-stat b{display:block;font-size:24px;font-weight:800;letter-spacing:.5px;}
.hero-stat span{font-size:13px;color:rgba(255,255,255,.7);}
.hero-card{
  background:rgba(255,255,255,.97);
  color:var(--c-ink);
  border-radius:var(--radius-l);
  padding:26px;
  box-shadow:var(--shadow-l);
}
.hero-card h2{font-size:19px;font-weight:800;margin-bottom:6px;}
.hero-card p{color:var(--c-muted);font-size:14px;margin-bottom:18px;}
.check-list{display:grid;gap:12px;}
.check-item{
  display:flex;gap:12px;align-items:flex-start;
  padding:12px 14px;border-radius:14px;background:var(--c-surface-2);
  border:1px solid transparent;transition:border-color .2s ease,background .2s ease;
}
.check-item:hover{border-color:#cfdcff;background:#fff;}
.check-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  background:var(--c-brand);color:#fff;font-size:13px;font-weight:800;
}
.check-item strong{display:block;font-size:14.5px;}
.check-item small{color:var(--c-muted);font-size:12.5px;line-height:1.6;}
.hero-card .btn{margin-top:18px;}

/* ---------- 公告条 ---------- */
.notice-bar{
  background:#fff;border-bottom:1px solid var(--c-line);
}
.notice-inner{
  display:flex;align-items:center;gap:16px;padding:14px 0;
  font-size:14px;color:var(--c-ink-2);flex-wrap:wrap;
}
.notice-label{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--c-accent-soft);color:#c94f1f;
  padding:5px 12px;border-radius:999px;font-weight:700;font-size:13px;
}
.notice-inner a{color:var(--c-brand);font-weight:600;}
.notice-inner a:hover{text-decoration:underline;}

/* ---------- 入口分类卡片 ---------- */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--gap);}
.entry-card{
  display:flex;flex-direction:column;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow-xs);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.entry-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:#cfdcff;}
.entry-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--c-surface-2);}
.entry-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.entry-card:hover .entry-media img{transform:scale(1.06);}
.entry-media .badge{position:absolute;left:12px;top:12px;background:rgba(10,18,38,.78);color:#fff;}
.entry-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.entry-body h3{font-size:18px;font-weight:800;}
.entry-body p{font-size:14px;color:var(--c-ink-2);flex:1;}
.entry-foot{display:flex;align-items:center;justify-content:space-between;padding-top:12px;border-top:1px dashed var(--c-line);}
.entry-foot span{font-size:13px;color:var(--c-muted);}
.link-arrow{font-size:14px;font-weight:700;color:var(--c-brand);}
.entry-card:hover .link-arrow{transform:translateX(3px);}

/* ---------- 流程阶梯 ---------- */
.step-wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.step{
  position:relative;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--radius);padding:26px 22px;box-shadow:var(--shadow-xs);
  transition:transform .22s ease,box-shadow .22s ease;
}
.step:hover{transform:translateY(-5px);box-shadow:var(--shadow);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:14px;
  background:linear-gradient(135deg,var(--c-brand),#5b3cff);color:#fff;
  font-weight:800;font-size:17px;margin-bottom:16px;
  box-shadow:0 10px 22px rgba(39,87,245,.25);
}
.step h3{font-size:17px;font-weight:800;margin-bottom:8px;}
.step p{font-size:14px;color:var(--c-ink-2);}
.step-line{
  position:absolute;top:46px;right:-11px;width:22px;height:2px;
  background:linear-gradient(90deg,#cfdcff,transparent);
}
.step:last-child .step-line{display:none;}

/* ---------- 安全 / 图文区 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;}
.media-frame{
  position:relative;border-radius:var(--radius-l);overflow:hidden;
  box-shadow:var(--shadow-l);border:6px solid #fff;
}
.media-frame img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.media-badge{
  position:absolute;left:18px;bottom:18px;
  background:rgba(10,18,38,.82);color:#fff;
  padding:10px 16px;border-radius:14px;font-size:13.5px;font-weight:600;
  backdrop-filter:blur(6px);
}
.feature-list{display:grid;gap:16px;margin-top:26px;}
.feature-item{
  display:flex;gap:14px;padding:16px;border-radius:var(--radius);
  background:#fff;border:1px solid var(--c-line);box-shadow:var(--shadow-xs);
  transition:border-color .2s ease,transform .2s ease;
}
.feature-item:hover{border-color:#cfdcff;transform:translateX(4px);}
.feature-ico{
  flex:0 0 42px;width:42px;height:42px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--c-brand-soft);color:var(--c-brand);font-weight:800;font-size:15px;
}
.feature-item h4{font-size:16px;font-weight:800;margin-bottom:4px;}
.feature-item p{font-size:14px;color:var(--c-ink-2);}

/* ---------- 数据条 ---------- */
.metrics{
  background:linear-gradient(120deg,var(--c-dark) 0%,var(--c-dark-2) 100%);
  border-radius:var(--radius-l);padding:40px;color:#fff;
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
}
.metric b{display:block;font-size:30px;font-weight:800;background:linear-gradient(120deg,#fff,#a9c3ff);-webkit-background-clip:text;background-clip:text;color:transparent;}
.metric span{font-size:13.5px;color:rgba(255,255,255,.7);}

/* ---------- 最新信息（CMS 列表） ---------- */
.news-panel{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-l);
  padding:28px;box-shadow:var(--shadow-s);
}
.news-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px;}
.news-head h2{font-size:21px;font-weight:800;}
.news-list{display:grid;gap:14px;}
.news-item{
  display:flex;align-items:flex-start;gap:16px;
  padding:16px;border-radius:var(--radius);border:1px solid var(--c-line);
  background:var(--c-surface);transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.news-item:hover{border-color:#cfdcff;box-shadow:var(--shadow-s);transform:translateY(-3px);}
.news-index{
  flex:0 0 40px;width:40px;height:40px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--c-brand-soft);color:var(--c-brand);font-weight:800;
}
.news-main{flex:1;min-width:0;}
.news-main h3{font-size:16px;font-weight:700;line-height:1.5;}
.news-main h3 a:hover{color:var(--c-brand);}
.news-main p{margin-top:6px;font-size:13.5px;color:var(--c-muted);}
.news-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:10px;font-size:12.5px;color:var(--c-muted);}
.news-meta span{display:inline-flex;align-items:center;gap:6px;}
.news-empty{
  padding:36px 20px;text-align:center;color:var(--c-muted);
  background:var(--c-surface-2);border-radius:var(--radius);font-size:14.5px;
}
.news-aside{display:grid;gap:18px;}
.aside-card{
  background:linear-gradient(150deg,#2757f5,#5b3cff);
  color:#fff;border-radius:var(--radius-l);padding:26px;box-shadow:var(--shadow);
}
.aside-card h3{font-size:18px;font-weight:800;margin-bottom:10px;}
.aside-card p{font-size:14px;color:rgba(255,255,255,.86);}
.aside-card .btn{margin-top:18px;}
.news-layout{display:grid;grid-template-columns:1.6fr .9fr;gap:28px;align-items:start;}

/* ---------- 用户评价 ---------- */
.quote-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-xs);display:flex;flex-direction:column;gap:14px;
  transition:transform .22s ease,box-shadow .22s ease;
}
.quote-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);}
.quote-text{font-size:14.5px;color:var(--c-ink-2);}
.quote-user{display:flex;align-items:center;gap:12px;padding-top:14px;border-top:1px solid var(--c-line);}
.avatar{
  width:42px;height:42px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:800;font-size:15px;
  background:linear-gradient(135deg,#2757f5,#5b3cff);
}
.avatar.b2{background:linear-gradient(135deg,#ff8a52,#ff5f2e);}
.avatar.b3{background:linear-gradient(135deg,#0fb98a,#0a8f6a);}
.quote-user b{display:block;font-size:14.5px;}
.quote-user span{font-size:12.5px;color:var(--c-muted);}
.stars{color:#ffb020;font-size:13px;letter-spacing:2px;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:900px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-xs);transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:#cfdcff;box-shadow:var(--shadow-s);}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:20px 56px 20px 22px;font-size:16px;font-weight:700;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  width:28px;height:28px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:var(--c-brand-soft);color:var(--c-brand);font-weight:800;font-size:17px;
  transition:transform .2s ease,background .2s ease;
}
.faq-item[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg);}
.faq-body{padding:0 22px 22px;color:var(--c-ink-2);font-size:14.5px;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;color:#fff;border-radius:var(--radius-l);
  padding:56px 44px;
  background-color:var(--c-dark);
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.cta-band::before{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(10,18,38,.94),rgba(31,25,80,.78));}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.3fr .7fr;gap:32px;align-items:center;}
.cta-inner h2{font-size:clamp(22px,2.8vw,30px);font-weight:800;line-height:1.4;}
.cta-inner p{margin-top:14px;color:rgba(255,255,255,.84);font-size:15.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-dark);color:rgba(255,255,255,.72);margin-top:80px;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px;}
.site-footer h3{color:#fff;font-size:15.5px;font-weight:800;margin-bottom:16px;}
.site-footer p{font-size:14px;line-height:1.9;}
.footer-links{display:grid;gap:10px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-links a:hover{color:#fff;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0;font-size:13px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .news-layout{grid-template-columns:1fr;}
  .step-wrap{grid-template-columns:repeat(2,1fr);}
  .step-line{display:none;}
  .cta-inner{grid-template-columns:1fr;}
  .cta-actions{justify-content:flex-start;}
}
@media (max-width:900px){
  .main-nav{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border-bottom:1px solid var(--c-line);
    padding:12px 20px 18px;box-shadow:var(--shadow);
    display:none;
  }
  .main-nav.is-open{display:flex;}
  .nav-link{padding:14px 12px;font-size:15.5px;border-radius:12px;}
  .nav-link.is-active::after{display:none;}
  .nav-toggle{display:flex;}
  .header-actions .btn{display:none;}
  .split{grid-template-columns:1fr;gap:32px;}
  .metrics{grid-template-columns:repeat(2,1fr);padding:30px;}
  .grid-3{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:640px){
  .section{padding:56px 0;}
  .hero{padding:60px 0 54px;}
  .hero-stats{grid-template-columns:1fr 1fr;}
  .grid-4{grid-template-columns:1fr;}
  .grid-2{grid-template-columns:1fr;}
  .step-wrap{grid-template-columns:1fr;}
  .metrics{grid-template-columns:1fr 1fr;gap:18px;}
  .cta-band{padding:38px 22px;}
  .news-panel{padding:20px;}
  .news-item{flex-direction:column;gap:12px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{justify-content:flex-start;}
  .brand-sub{display:none;}
}
@media (max-width:400px){
  .hero-stats{grid-template-columns:1fr;}
}

/* roulang page: article */
:root{
  --brand:#ff6a2b;
  --brand-dark:#e2510f;
  --brand-soft:#fff1e9;
  --accent:#2b57ff;
  --accent-soft:#eef2ff;
  --ink:#141824;
  --ink-2:#3b4356;
  --muted:#707a90;
  --bg:#f5f6fb;
  --card:#ffffff;
  --line:#e5e8f2;
  --line-strong:#d3d8e8;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;
  --shadow-sm:0 2px 8px rgba(20,24,36,.06);
  --shadow:0 12px 30px rgba(20,24,36,.09);
  --shadow-lg:0 24px 60px rgba(20,24,36,.14);
  --container:1180px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-sm);}
a{color:var(--brand-dark);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand);}
h1,h2,h3,h4{margin:0 0 .6em;color:var(--ink);line-height:1.35;font-weight:700;}
p{margin:0 0 1em;}
ul,ol{margin:0 0 1em;padding-left:1.2em;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(43,87,255,.45);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:linear-gradient(135deg,var(--brand) 0%,#ff8f4d 100%);color:#fff;box-shadow:0 10px 22px rgba(255,106,43,.28);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 30px rgba(255,106,43,.34);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line-strong);}
.btn-ghost:hover{color:var(--brand-dark);border-color:var(--brand);transform:translateY(-2px);}
.btn-sm{padding:9px 18px;font-size:14px;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:22px;min-height:74px;}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:46px;height:46px;border-radius:14px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand) 0%,#ff9b57 100%);
  color:#fff;font-size:13px;font-weight:700;letter-spacing:.5px;
  box-shadow:0 8px 18px rgba(255,106,43,.3);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-size:16px;font-weight:700;color:var(--ink);letter-spacing:.2px;}
.brand-sub{font-size:12px;color:var(--muted);}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;padding:9px 14px;border-radius:999px;font-size:15px;font-weight:500;
  color:var(--ink-2);transition:background .2s ease,color .2s ease;
}
.nav-link:hover{background:var(--brand-soft);color:var(--brand-dark);}
.nav-link.is-active{background:var(--ink);color:#fff;}
.nav-link.is-active:hover{background:var(--ink);color:#fff;}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:46px;height:46px;border-radius:12px;border:1px solid var(--line);
  background:#fff;cursor:pointer;padding:0;flex-direction:column;justify-content:center;
  align-items:center;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s ease,opacity .25s ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 文章首屏 ---------- */
.article-hero{
  position:relative;overflow:hidden;color:#fff;
  background-image:linear-gradient(120deg,rgba(16,20,42,.92) 0%,rgba(16,20,42,.72) 55%,rgba(16,20,42,.55) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;padding:34px 0 56px;
}
.article-hero::after{
  content:"";position:absolute;right:-120px;bottom:-160px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,106,43,.42) 0%,rgba(255,106,43,0) 70%);
}
.article-hero .container{position:relative;z-index:2;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:20px;}
.breadcrumb a{color:rgba(255,255,255,.86);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb i{font-size:10px;opacity:.6;}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:999px;
  background:rgba(255,106,43,.18);border:1px solid rgba(255,155,87,.5);
  color:#ffc9a5;font-size:13px;font-weight:600;letter-spacing:.4px;margin-bottom:16px;
}
.article-title{font-size:34px;line-height:1.4;color:#fff;margin:0 0 18px;max-width:900px;}
.article-meta{display:flex;flex-wrap:wrap;gap:14px 26px;font-size:14px;color:rgba(255,255,255,.78);}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:8px;}
.article-meta i{color:#ffb489;}

/* ---------- 正文 ---------- */
.article-main{padding:0 0 60px;}
.article-shell{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);margin-top:-30px;padding:40px 44px 36px;position:relative;z-index:5;
}
.article-cover{margin:0 0 30px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);}
.article-cover img{width:100%;border-radius:0;}
.article-content{font-size:17px;line-height:1.95;color:var(--ink-2);}
.article-content h2{
  font-size:23px;margin:38px 0 16px;padding-left:14px;border-left:5px solid var(--brand);
  line-height:1.4;
}
.article-content h3{font-size:19px;margin:28px 0 12px;color:var(--ink);}
.article-content p{margin:0 0 18px;}
.article-content ul,.article-content ol{padding-left:1.35em;margin:0 0 20px;}
.article-content li{margin-bottom:10px;}
.article-content li::marker{color:var(--brand);font-weight:700;}
.article-content img{border-radius:var(--radius);margin:22px 0;border:1px solid var(--line);}
.article-content blockquote{
  margin:24px 0;padding:18px 22px;border-radius:var(--radius);background:var(--brand-soft);
  border-left:5px solid var(--brand);color:#8a3c10;font-size:16px;
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;}
.article-content th,.article-content td{border:1px solid var(--line);padding:12px 14px;text-align:left;}
.article-content th{background:#f8f9fd;color:var(--ink);font-weight:600;}
.article-content code{background:#f1f3fa;padding:2px 7px;border-radius:6px;font-size:14px;color:#b6430c;}
.article-content a{border-bottom:1px solid rgba(255,106,43,.45);}
.article-content a:hover{border-bottom-color:var(--brand);}

.article-missing{padding:18px 0 6px;text-align:center;}
.article-missing h1{font-size:28px;margin-bottom:12px;}
.article-missing p{color:var(--muted);margin-bottom:22px;}

/* ---------- 提示条 ---------- */
.notice-bar{
  display:flex;gap:16px;align-items:flex-start;margin-top:34px;padding:20px 22px;
  border-radius:var(--radius);background:var(--accent-soft);border:1px solid #dbe2ff;
}
.notice-bar .notice-icon{
  flex:0 0 auto;width:40px;height:40px;border-radius:12px;background:#fff;color:var(--accent);
  display:flex;align-items:center;justify-content:center;font-size:17px;box-shadow:var(--shadow-sm);
}
.notice-bar h4{margin:0 0 4px;font-size:16px;color:#1f2a63;}
.notice-bar p{margin:0;font-size:15px;color:#414d85;}

/* ---------- 通用板块 ---------- */
.section{padding:56px 0;}
.section-head{max-width:720px;margin:0 auto 34px;text-align:center;}
.section-head .eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:2px;color:var(--brand-dark);
  text-transform:uppercase;margin-bottom:10px;
}
.section-head h2{font-size:27px;margin-bottom:12px;}
.section-head p{color:var(--muted);margin:0;font-size:15.5px;}

/* ---------- 相关栏目卡片 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--gap);}
.related-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:24px 22px;box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.related-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:#ffd5bd;}
.related-card .rc-icon{
  width:44px;height:44px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand-dark);font-size:18px;margin-bottom:16px;
}
.related-card h3{font-size:17px;margin-bottom:8px;}
.related-card p{font-size:14.5px;color:var(--muted);margin:0 0 16px;}
.related-card .rc-link{font-size:14px;font-weight:600;color:var(--brand-dark);margin-top:auto;}
.related-card .rc-link i{font-size:12px;margin-left:5px;transition:transform .2s ease;}
.related-card:hover .rc-link i{transform:translateX(4px);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  margin-bottom:14px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:#ffd5bd;box-shadow:var(--shadow-sm);}
.faq-item summary{
  cursor:pointer;list-style:none;padding:20px 24px;font-size:16.5px;font-weight:600;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;color:var(--brand);
  transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item .faq-body{padding:0 24px 22px;color:var(--ink-2);font-size:15.5px;}
.faq-item .faq-body p:last-child{margin-bottom:0;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);padding:48px 40px;color:#fff;
  background-image:linear-gradient(115deg,rgba(16,20,42,.94) 0%,rgba(24,30,58,.86) 60%,rgba(255,106,43,.55) 100%),url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;display:flex;flex-wrap:wrap;align-items:center;gap:28px;
  justify-content:space-between;
}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.8);margin:0;max-width:620px;font-size:15.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-band .btn-ghost{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.4);color:#fff;}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.2);color:#fff;}

/* ---------- 页脚 ---------- */
.site-footer{background:#10142a;color:rgba(255,255,255,.7);padding:56px 0 26px;margin-top:20px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.site-footer h3{font-size:15px;color:#fff;margin:0 0 16px;letter-spacing:.5px;}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);margin:0;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.66);}
.footer-links a:hover{color:var(--brand);}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .article-title{font-size:29px;}
  .article-shell{padding:34px 30px 30px;}
}
@media (max-width:860px){
  .nav-toggle{display:flex;}
  .main-nav{
    position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow);
    padding:14px 20px 20px;margin:0;display:none;
  }
  .main-nav.is-open{display:flex;}
  .nav-link{padding:13px 14px;font-size:16px;border-radius:12px;}
  .header-inner{position:relative;gap:12px;}
  .brand-sub{display:none;}
  .header-actions .btn{display:none;}
  .cta-band{padding:36px 26px;}
}
@media (max-width:560px){
  .article-hero{padding:26px 0 46px;}
  .article-title{font-size:23px;}
  .article-shell{padding:26px 20px 24px;border-radius:var(--radius);}
  .article-content{font-size:16px;}
  .article-content h2{font-size:20px;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .section{padding:42px 0;}
  .section-head h2{font-size:22px;}
  .cta-band h2{font-size:21px;}
  .cta-actions .btn{width:100%;}
  .brand-name{font-size:15px;}
}

/* roulang page: category1 */
:root{
  --brand:#4f46e5;
  --brand-2:#7c3aed;
  --accent:#06b6d4;
  --accent-soft:rgba(6,182,212,.12);
  --ink:#111629;
  --ink-2:#333c56;
  --muted:#6d768e;
  --line:#e5e8f2;
  --bg:#f5f7fc;
  --card:#ffffff;
  --dark:#151a33;
  --dark-2:#1e2445;
  --radius:20px;
  --radius-sm:12px;
  --radius-xs:8px;
  --shadow:0 10px 30px rgba(18,23,48,.07);
  --shadow-md:0 18px 44px rgba(18,23,48,.11);
  --shadow-lg:0 30px 70px rgba(18,23,48,.18);
  --container:1180px;
  --gap:28px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .22s ease,opacity .22s ease;}
a:hover{color:var(--brand-2);}
h1,h2,h3,h4{margin:0 0 .6em;color:var(--ink);font-weight:800;line-height:1.3;letter-spacing:-.01em;}
h1{font-size:2.6rem;}
h2{font-size:2rem;}
h3{font-size:1.25rem;}
p{margin:0 0 1em;}
ul,ol{margin:0 0 1em;padding-left:1.15em;}
li{margin-bottom:.4em;}
button{font-family:inherit;}
input,textarea,select{font-family:inherit;font-size:1rem;}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{outline:3px solid rgba(79,70,229,.45);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
.section{padding:84px 0;}
.section--tight{padding:62px 0;}
.section--dark{background:linear-gradient(140deg,#151a33 0%,#242a55 100%);color:rgba(255,255,255,.82);}
.section--dark h2,.section--dark h3{color:#fff;}
.section--soft{background:#eef1fb;}
.section-head{max-width:760px;margin:0 auto 46px;text-align:center;}
.section-head p{color:var(--muted);font-size:1.05rem;margin-bottom:0;}
.section--dark .section-head p{color:rgba(255,255,255,.7);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:999px;
  background:var(--accent-soft);color:#0e7490;
  font-size:.82rem;font-weight:700;letter-spacing:.06em;
  margin-bottom:18px;
}
.section--dark .eyebrow{background:rgba(6,182,212,.18);color:#67e8f9;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 28px;border-radius:999px;border:1px solid transparent;
  font-size:.98rem;font-weight:700;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-primary{background:linear-gradient(120deg,var(--brand) 0%,var(--brand-2) 100%);color:#fff;box-shadow:0 12px 28px rgba(79,70,229,.3);}
.btn-primary:hover,.btn-primary:focus{color:#fff;transform:translateY(-2px);box-shadow:0 18px 38px rgba(79,70,229,.38);}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.32);}
.btn-ghost:hover,.btn-ghost:focus{background:rgba(255,255,255,.18);color:#fff;transform:translateY(-2px);}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--line);box-shadow:var(--shadow);}
.btn-outline:hover,.btn-outline:focus{color:var(--brand);border-color:rgba(79,70,229,.45);transform:translateY(-2px);}
.btn-sm{padding:10px 20px;font-size:.9rem;}
.btn:active{transform:translateY(0);}

/* ---------- 页头 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(17,22,45,.94);
  backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.header-inner{
  display:flex;align-items:center;gap:24px;
  min-height:78px;
}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;flex-shrink:0;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:auto;padding:8px 12px;border-radius:10px;
  background:linear-gradient(120deg,var(--brand) 0%,var(--accent) 100%);
  color:#fff;font-weight:800;font-size:.95rem;letter-spacing:.04em;
  box-shadow:0 8px 20px rgba(79,70,229,.35);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{color:#fff;font-weight:800;font-size:1rem;}
.brand-sub{color:rgba(255,255,255,.55);font-size:.72rem;letter-spacing:.04em;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;
  padding:9px 14px;border-radius:999px;
  color:rgba(255,255,255,.72);font-size:.92rem;font-weight:600;
  transition:color .22s ease,background .22s ease;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.09);}
.nav-link.is-active{color:#fff;background:rgba(79,70,229,.42);box-shadow:inset 0 0 0 1px rgba(255,255,255,.14);}
.header-actions{display:flex;align-items:center;gap:14px;margin-left:8px;}
.nav-toggle{
  display:none;width:46px;height:46px;border-radius:12px;
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.2);
  cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:#fff;border-radius:2px;transition:transform .25s ease,opacity .25s ease;}
.nav-toggle.is-active span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-active span:nth-child(2){opacity:0;}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 分类首屏 ---------- */
.hero-cat{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#131834 0%,#252b58 55%,#332c6b 100%);
  color:#fff;padding:96px 0 88px;
}
.hero-cat__bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:.24;
}
.hero-cat__veil{
  position:absolute;inset:0;
  background:radial-gradient(1000px 520px at 82% 12%,rgba(6,182,212,.24),transparent 62%),
             linear-gradient(180deg,rgba(15,19,40,.35) 0%,rgba(15,19,40,.9) 100%);
}
.hero-cat .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:center;}
.hero-cat h1{color:#fff;font-size:2.85rem;margin-bottom:20px;}
.hero-cat p.lead{color:rgba(255,255,255,.78);font-size:1.08rem;max-width:620px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px;}
.hero-badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 15px;border-radius:999px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);
  color:rgba(255,255,255,.9);font-size:.82rem;font-weight:600;
}
.hero-badge i{color:#67e8f9;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:18px;margin-top:44px;
  border-top:1px solid rgba(255,255,255,.14);padding-top:26px;
}
.hero-stat b{display:block;font-size:1.9rem;color:#fff;font-weight:800;line-height:1.2;}
.hero-stat span{font-size:.86rem;color:rgba(255,255,255,.62);}
.hero-card{
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius);
  padding:16px;
  backdrop-filter:blur(8px);
  box-shadow:var(--shadow-lg);
}
.hero-card img{border-radius:var(--radius-sm);width:100%;height:250px;object-fit:cover;}
.hero-card__body{padding:18px 6px 6px;}
.hero-card__body h3{color:#fff;font-size:1.08rem;margin-bottom:8px;}
.hero-card__body p{color:rgba(255,255,255,.7);font-size:.9rem;margin:0;}
.hero-card__meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.mini-tag{
  padding:5px 12px;border-radius:999px;font-size:.76rem;font-weight:600;
  background:rgba(6,182,212,.18);color:#7dd3fc;
}

/* ---------- 通用卡片 ---------- */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 26px;height:100%;
  box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:rgba(79,70,229,.28);}
.card__icon{
  width:52px;height:52px;border-radius:14px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(130deg,rgba(79,70,229,.14),rgba(6,182,212,.16));
  color:var(--brand);font-size:1.25rem;margin-bottom:18px;
}
.card h3{font-size:1.12rem;margin-bottom:10px;}
.card p{color:var(--muted);font-size:.95rem;margin-bottom:0;}
.card-list{margin-top:14px;padding-left:0;list-style:none;}
.card-list li{
  position:relative;padding-left:20px;font-size:.9rem;color:var(--ink-2);
}
.card-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;border-radius:50%;
  background:var(--accent);
}

/* ---------- 阶梯 ---------- */
.stair{display:grid;gap:20px;}
.stair-item{
  display:grid;grid-template-columns:88px 1fr auto;gap:24px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 30px;box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease;
}
.stair-item:hover{transform:translateX(6px);box-shadow:var(--shadow-md);}
.stair-num{
  font-size:1.6rem;font-weight:800;color:transparent;
  background:linear-gradient(120deg,var(--brand),var(--accent));
  -webkit-background-clip:text;background-clip:text;
  border-right:1px dashed var(--line);
}
.stair-item h3{font-size:1.1rem;margin-bottom:6px;}
.stair-item p{margin:0;color:var(--muted);font-size:.94rem;}
.stair-tag{
  padding:7px 14px;border-radius:999px;font-size:.8rem;font-weight:700;
  background:#eef1fb;color:var(--brand);white-space:nowrap;
}

/* ---------- 核查清单 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
.check-item{
  display:flex;gap:16px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:20px 22px;box-shadow:var(--shadow);
}
.check-item i{
  flex-shrink:0;width:34px;height:34px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(6,182,212,.14);color:#0e7490;font-size:.95rem;
}
.check-item strong{display:block;color:var(--ink);font-size:1rem;margin-bottom:4px;}
.check-item span{color:var(--muted);font-size:.9rem;line-height:1.65;}

/* ---------- 设备对比 ---------- */
.compare-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-md);
}
.compare-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;}
table.compare{width:100%;border-collapse:collapse;min-width:640px;}
table.compare th,table.compare td{
  padding:18px 22px;text-align:left;font-size:.94rem;border-bottom:1px solid var(--line);
  vertical-align:top;
}
table.compare thead th{
  background:linear-gradient(120deg,#1b2043,#2b2f63);color:#fff;font-weight:700;font-size:.95rem;
  border-bottom:0;
}
table.compare tbody tr:nth-child(even){background:#fafbff;}
table.compare td:first-child{font-weight:700;color:var(--ink);white-space:nowrap;}
table.compare tbody tr:hover{background:#f0f3ff;}
.compare-note{margin-top:16px;font-size:.87rem;color:var(--muted);}

/* ---------- 流程时间线 ---------- */
.flow{position:relative;margin-top:10px;}
.flow::before{
  content:"";position:absolute;left:23px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,var(--brand),var(--accent));opacity:.35;
}
.flow-step{position:relative;padding:0 0 32px 68px;}
.flow-step:last-child{padding-bottom:0;}
.flow-step__dot{
  position:absolute;left:0;top:0;width:48px;height:48px;border-radius:50%;
  background:#fff;border:2px solid rgba(79,70,229,.35);
  display:flex;align-items:center;justify-content:center;
  color:var(--brand);font-weight:800;font-size:.95rem;
  box-shadow:0 8px 20px rgba(79,70,229,.14);
}
.flow-step h3{font-size:1.08rem;margin-bottom:6px;}
.flow-step p{margin:0;color:var(--muted);font-size:.94rem;}

/* ---------- 提示条 ---------- */
.notice{
  display:flex;gap:16px;align-items:flex-start;
  background:linear-gradient(120deg,rgba(6,182,212,.1),rgba(79,70,229,.1));
  border:1px solid rgba(79,70,229,.18);
  border-radius:var(--radius-sm);padding:22px 24px;
}
.notice i{color:var(--brand);font-size:1.3rem;margin-top:3px;}
.notice p{margin:0;font-size:.94rem;color:var(--ink-2);}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow);
  transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item[open]{border-color:rgba(79,70,229,.35);box-shadow:var(--shadow-md);}
.faq-item summary{
  cursor:pointer;list-style:none;
  padding:20px 56px 20px 24px;position:relative;
  font-weight:700;color:var(--ink);font-size:1rem;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:22px;top:50%;transform:translateY(-50%);
  color:var(--brand);font-size:.85rem;transition:transform .25s ease;
}
.faq-item[open] summary::after{content:"\f068";}
.faq-item .faq-body{padding:0 24px 22px;color:var(--muted);font-size:.95rem;border-top:1px solid var(--line);padding-top:18px;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:28px;
  padding:64px 56px;color:#fff;
  background:linear-gradient(130deg,#1a1f42 0%,#2c2f6b 60%,#3b2f7a 100%);
  box-shadow:var(--shadow-lg);
}
.cta-band__bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.2;}
.cta-band__inner{position:relative;z-index:2;display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center;}
.cta-band h2{color:#fff;font-size:2rem;}
.cta-band p{color:rgba(255,255,255,.76);margin-bottom:0;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.cta-points{display:grid;gap:12px;}
.cta-point{
  display:flex;gap:12px;align-items:center;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-sm);padding:14px 18px;font-size:.92rem;color:rgba(255,255,255,.88);
}
.cta-point i{color:#67e8f9;}

/* ---------- 相关入口 ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.entry-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);
  display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease;
}
.entry-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);}
.entry-card img{height:172px;width:100%;object-fit:cover;}
.entry-card__body{padding:24px 24px 26px;display:flex;flex-direction:column;flex:1;}
.entry-card__body h3{font-size:1.08rem;margin-bottom:10px;}
.entry-card__body p{color:var(--muted);font-size:.92rem;flex:1;}
.entry-link{font-weight:700;font-size:.92rem;display:inline-flex;align-items:center;gap:7px;}
.entry-link i{transition:transform .22s ease;}
.entry-card:hover .entry-link i{transform:translateX(4px);}

/* ---------- 页脚 ---------- */
.site-footer{
  background:linear-gradient(150deg,#141935 0%,#1d2246 100%);
  color:rgba(255,255,255,.68);padding:70px 0 30px;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand .brand-text{display:flex;flex-direction:column;line-height:1.25;}
.footer-brand .brand-name{font-weight:800;font-size:1rem;}
.footer-brand .brand-sub{font-size:.72rem;letter-spacing:.04em;}
.site-footer p{font-size:.9rem;color:rgba(255,255,255,.6);line-height:1.8;}
.site-footer h3{color:#fff;font-size:1rem;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{color:rgba(255,255,255,.66);font-size:.9rem;transition:color .2s ease,transform .2s ease;display:inline-block;}
.footer-links a:hover{color:#fff;transform:translateX(3px);}
.footer-bottom{
  margin-top:46px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:.85rem;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1024px){
  h1{font-size:2.2rem;}
  .hero-cat h1{font-size:2.3rem;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-card img{height:220px;}
  .entry-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band__inner{grid-template-columns:1fr;}
  .section{padding:66px 0;}
}
@media screen and (max-width:860px){
  .nav-toggle{display:flex;}
  .main-nav{
    position:fixed;top:78px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#171c39;padding:18px 20px 26px;
    border-bottom:1px solid rgba(255,255,255,.1);
    box-shadow:0 24px 40px rgba(0,0,0,.35);
    transform:translateY(-12px);opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
    max-height:calc(100vh - 78px);overflow-y:auto;margin-left:0;
  }
  .main-nav.is-open{transform:translateY(0);opacity:1;visibility:visible;pointer-events:auto;}
  .nav-link{padding:14px 16px;border-radius:12px;font-size:1rem;}
  .header-actions .btn-sm{display:none;}
  .header-inner{gap:12px;}
  .brand-sub{display:none;}
}
@media screen and (max-width:700px){
  .check-grid{grid-template-columns:1fr;}
  .entry-grid{grid-template-columns:1fr;}
  .hero-stats{grid-template-columns:1fr 1fr;gap:16px;}
  .stair-item{grid-template-columns:1fr;gap:12px;padding:22px;}
  .stair-num{border-right:0;border-bottom:1px dashed var(--line);padding-bottom:10px;font-size:1.35rem;}
  .stair-tag{justify-self:start;}
  .cta-band{padding:44px 26px;border-radius:22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media screen and (max-width:520px){
  .container{padding:0 16px;}
  h1{font-size:1.72rem;}
  h2{font-size:1.42rem;}
  .hero-cat{padding:64px 0 58px;}
  .hero-cat h1{font-size:1.78rem;}
  .hero-cat p.lead{font-size:.98rem;}
  .hero-actions .btn{width:100%;}
  .section{padding:52px 0;}
  .section-head{margin-bottom:32px;}
  .card{padding:24px 20px;}
  .flow-step{padding-left:58px;}
  .flow-step__dot{width:42px;height:42px;font-size:.85rem;}
  .flow::before{left:20px;}
  table.compare th,table.compare td{padding:14px 16px;font-size:.88rem;}
  .btn{padding:13px 22px;}
}

/* roulang page: category2 */
:root{
  --brand:#1e50d6;
  --brand-dark:#12336f;
  --brand-deep:#0a1c3d;
  --brand-soft:#eaf0ff;
  --accent:#12b8a6;
  --accent-soft:#e6f8f5;
  --warn:#e07a2d;
  --warn-soft:#fdf1e6;
  --ink:#0f1a2e;
  --ink-2:#33415c;
  --muted:#6b7a96;
  --line:#e3e9f3;
  --bg:#f5f7fc;
  --surface:#ffffff;
  --radius-lg:22px;
  --radius:16px;
  --radius-sm:10px;
  --shadow-sm:0 2px 10px rgba(15,26,46,.06);
  --shadow:0 14px 34px rgba(15,26,46,.09);
  --shadow-lg:0 26px 60px rgba(10,28,61,.18);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--brand);}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,select,textarea{font-family:inherit;font-size:1rem;}
:focus-visible{outline:3px solid rgba(30,80,214,.45);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:1180px;
  margin:0 auto;
  padding:0 22px;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 30px rgba(15,26,46,.08);}
.header-inner{
  display:flex;
  align-items:center;
  gap:22px;
  min-height:74px;
}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:46px;height:46px;flex:0 0 46px;
  display:flex;align-items:center;justify-content:center;
  border-radius:14px;
  background:linear-gradient(140deg,var(--brand) 0%,var(--accent) 100%);
  color:#fff;font-weight:700;font-size:15px;letter-spacing:.5px;
  box-shadow:0 8px 20px rgba(30,80,214,.32);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-size:16px;font-weight:700;color:var(--ink);white-space:nowrap;}
.brand-sub{font-size:11.5px;color:var(--muted);letter-spacing:.4px;}

.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-link{
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 15px;
  border-radius:999px;
  font-size:14.5px;
  font-weight:500;
  color:var(--ink-2);
  white-space:nowrap;
  transition:background .2s ease,color .2s ease;
}
.nav-link:hover{background:var(--brand-soft);color:var(--brand);}
.nav-link.is-active{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(30,80,214,.26);}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  letter-spacing:.3px;
  transition:transform .18s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  border:1px solid transparent;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{background:linear-gradient(135deg,var(--brand) 0%,#2f6ef0 100%);color:#fff;box-shadow:0 10px 24px rgba(30,80,214,.28);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(30,80,214,.34);color:#fff;}
.btn-ghost{background:#fff;color:var(--brand);border-color:rgba(30,80,214,.28);}
.btn-ghost:hover{background:var(--brand-soft);transform:translateY(-2px);color:var(--brand);}
.btn-light{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.38);}
.btn-light:hover{background:rgba(255,255,255,.24);color:#fff;transform:translateY(-2px);}
.btn-block{width:100%;}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#fff;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s ease,opacity .2s ease;}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;
  padding:86px 0 78px;
  color:#fff;
  background:
    linear-gradient(115deg,rgba(10,28,61,.94) 0%,rgba(18,51,111,.88) 46%,rgba(12,60,96,.78) 100%),
    url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  overflow:hidden;
}
.hero::after{
  content:"";
  position:absolute;
  right:-160px;top:-120px;
  width:520px;height:520px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(18,184,166,.34) 0%,rgba(18,184,166,0) 68%);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:52px;
  align-items:center;
}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:7px 16px;
  border-radius:999px;
  background:rgba(255,255,255,.13);
  border:1px solid rgba(255,255,255,.24);
  font-size:13px;
  letter-spacing:.6px;
  color:#dfe9ff;
  margin-bottom:22px;
}
.hero-badge i{color:var(--accent);}
.hero h1{
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.24;
  font-weight:800;
  letter-spacing:.5px;
  margin-bottom:18px;
}
.hero h1 em{
  font-style:normal;
  color:#7ce4d6;
}
.hero-lead{
  font-size:16.5px;
  line-height:1.9;
  color:rgba(255,255,255,.82);
  max-width:620px;
  margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.hero-points{
  display:flex;flex-wrap:wrap;gap:10px 26px;
  font-size:14px;color:rgba(255,255,255,.76);
}
.hero-points li{display:flex;align-items:center;gap:8px;}
.hero-points i{color:var(--accent);font-size:13px;}

.hero-panel{
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.22);
  border-radius:var(--radius-lg);
  padding:26px 24px;
  backdrop-filter:blur(10px);
  box-shadow:var(--shadow-lg);
}
.hero-panel h2{
  font-size:17px;font-weight:700;color:#fff;
  display:flex;align-items:center;gap:9px;
  margin-bottom:6px;
}
.hero-panel h2 i{color:#7ce4d6;}
.hero-panel p{font-size:13.5px;color:rgba(255,255,255,.7);margin-bottom:18px;}
.check-list{display:flex;flex-direction:column;gap:12px;}
.check-list li{
  display:flex;align-items:flex-start;gap:11px;
  padding:12px 14px;
  border-radius:14px;
  background:rgba(255,255,255,.09);
  border:1px solid rgba(255,255,255,.13);
  font-size:14.2px;
  color:rgba(255,255,255,.9);
  line-height:1.6;
}
.check-list i{
  margin-top:4px;
  color:#7ce4d6;
  font-size:13px;
}

/* ---------- 通用板块 ---------- */
.section{padding:74px 0;}
.section-tight{padding:56px 0;}
.section-head{max-width:760px;margin-bottom:38px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:1.4px;
  text-transform:uppercase;
  color:var(--brand);
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";width:26px;height:2px;border-radius:2px;background:var(--brand);
}
.section-head h2{
  font-size:clamp(23px,3vw,32px);
  line-height:1.36;
  font-weight:800;
  letter-spacing:.4px;
  margin-bottom:14px;
}
.section-head p{color:var(--muted);font-size:15.5px;line-height:1.9;}

/* 提示条 */
.notice-bar{
  display:flex;
  align-items:flex-start;
  gap:16px;
  padding:20px 24px;
  border-radius:var(--radius);
  background:var(--accent-soft);
  border:1px solid rgba(18,184,166,.28);
  margin-bottom:44px;
}
.notice-bar i{color:var(--accent);font-size:20px;margin-top:2px;}
.notice-bar p{font-size:14.8px;color:#0d5f56;line-height:1.8;}

/* 对比结构 */
.compare-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:26px;
}
.compare-card{
  border-radius:var(--radius-lg);
  padding:30px 28px;
  background:var(--surface);
  border:1px solid var(--line);
  box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease;
}
.compare-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.compare-card.do{border-top:4px solid var(--accent);}
.compare-card.avoid{border-top:4px solid var(--warn);}
.compare-head{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.compare-head .icon{
  width:44px;height:44px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;
}
.compare-card.do .icon{background:var(--accent-soft);color:var(--accent);}
.compare-card.avoid .icon{background:var(--warn-soft);color:var(--warn);}
.compare-head h3{font-size:19px;font-weight:700;}
.compare-card > p{font-size:14.4px;color:var(--muted);margin-bottom:18px;}
.tick-list{display:flex;flex-direction:column;gap:13px;}
.tick-list li{
  display:flex;gap:11px;align-items:flex-start;
  font-size:14.6px;line-height:1.75;color:var(--ink-2);
  padding-bottom:13px;
  border-bottom:1px dashed var(--line);
}
.tick-list li:last-child{border-bottom:0;padding-bottom:0;}
.tick-list i{margin-top:5px;font-size:13px;}
.do .tick-list i{color:var(--accent);}
.avoid .tick-list i{color:var(--warn);}
.tick-list strong{color:var(--ink);}

/* 流程 */
.steps-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
  counter-reset:step;
}
.step-card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:28px 22px 24px;
  box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.step-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:rgba(30,80,214,.3);}
.step-num{
  width:42px;height:42px;
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:17px;
  color:#fff;
  background:linear-gradient(135deg,var(--brand) 0%,var(--accent) 100%);
  box-shadow:0 10px 22px rgba(30,80,214,.24);
  margin-bottom:16px;
}
.step-card h3{font-size:16.5px;font-weight:700;margin-bottom:9px;}
.step-card p{font-size:14.2px;color:var(--muted);line-height:1.8;}

/* 图文卡片 */
.tile-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.tile{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  display:flex;flex-direction:column;
  transition:transform .24s ease,box-shadow .24s ease;
}
.tile:hover{transform:translateY(-6px);box-shadow:var(--shadow);}
.tile-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--brand-soft);}
.tile-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.tile:hover .tile-media img{transform:scale(1.05);}
.tile-tag{
  position:absolute;left:14px;top:14px;
  padding:5px 12px;border-radius:999px;
  background:rgba(10,28,61,.78);
  color:#fff;font-size:12px;letter-spacing:.6px;
  backdrop-filter:blur(4px);
}
.tile-body{padding:22px 22px 26px;display:flex;flex-direction:column;gap:11px;flex:1;}
.tile-body h3{font-size:17px;font-weight:700;}
.tile-body p{font-size:14.3px;color:var(--muted);line-height:1.8;flex:1;}
.tile-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--brand);
}
.tile-link i{transition:transform .2s ease;}
.tile:hover .tile-link i{transform:translateX(4px);}

/* 数据块 */
.stat-section{
  background:linear-gradient(120deg,var(--brand-deep) 0%,var(--brand-dark) 100%);
  color:#fff;
  border-radius:0;
}
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:22px;
}
.stat-card{
  padding:26px 22px;
  border-radius:var(--radius);
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.16);
  transition:background .22s ease,transform .22s ease;
}
.stat-card:hover{background:rgba(255,255,255,.13);transform:translateY(-4px);}
.stat-value{
  font-size:34px;font-weight:800;line-height:1.1;
  color:#7ce4d6;letter-spacing:.5px;
  margin-bottom:10px;
}
.stat-card h3{font-size:15.6px;font-weight:700;margin-bottom:8px;}
.stat-card p{font-size:13.6px;color:rgba(255,255,255,.7);line-height:1.75;}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:rgba(30,80,214,.32);box-shadow:var(--shadow);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  gap:14px;
  padding:19px 22px;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\f067";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  font-size:13px;
  color:var(--brand);
  margin-left:auto;
  transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-index{
  flex:0 0 auto;
  width:28px;height:28px;border-radius:9px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:700;
}
.faq-body{padding:0 22px 22px 64px;font-size:14.6px;color:var(--ink-2);line-height:1.9;}

/* CTA */
.cta-block{
  position:relative;
  border-radius:26px;
  padding:56px 48px;
  color:#fff;
  background:
    linear-gradient(115deg,rgba(10,28,61,.95) 0%,rgba(18,51,111,.9) 60%,rgba(15,80,110,.86) 100%),
    url("/assets/images/backpic/back-3.webp") center/cover no-repeat;
  overflow:hidden;
  box-shadow:var(--shadow-lg);
}
.cta-grid{
  display:grid;
  grid-template-columns:minmax(0,1.4fr) minmax(0,.6fr);
  gap:34px;
  align-items:center;
  position:relative;z-index:2;
}
.cta-block h2{font-size:clamp(22px,2.8vw,30px);font-weight:800;margin-bottom:14px;line-height:1.4;}
.cta-block p{font-size:15.4px;color:rgba(255,255,255,.8);line-height:1.9;margin-bottom:24px;max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-side{
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.2);
  border-radius:var(--radius);
  padding:22px;
}
.cta-side h3{font-size:15.4px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:9px;}
.cta-side h3 i{color:#7ce4d6;}
.cta-side ul{display:flex;flex-direction:column;gap:10px;}
.cta-side li{font-size:14px;color:rgba(255,255,255,.82);display:flex;gap:10px;align-items:flex-start;}
.cta-side li i{color:#7ce4d6;font-size:12px;margin-top:6px;}

/* 页脚 */
.site-footer{
  background:var(--brand-deep);
  color:rgba(255,255,255,.72);
  padding:64px 0 26px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:36px;
  padding-bottom:38px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand .brand-name{font-size:15.6px;font-weight:700;display:block;}
.footer-brand .brand-sub{font-size:11.5px;display:block;}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:400px;}
.site-footer h3{
  font-size:15px;font-weight:700;color:#fff;
  margin-bottom:16px;
}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.7);}
.footer-links a:hover{color:#7ce4d6;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;
  padding-top:24px;
  font-size:13.2px;
  color:rgba(255,255,255,.52);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:38px;}
  .hero{padding:66px 0 60px;}
  .steps-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .tile-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .cta-grid{grid-template-columns:1fr;}
}
@media (max-width:900px){
  .nav-toggle{display:flex;}
  .main-nav{
    position:absolute;
    left:0;right:0;top:100%;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    padding:16px 22px 22px;
    background:#fff;
    border-bottom:1px solid var(--line);
    box-shadow:0 22px 40px rgba(15,26,46,.12);
    display:none;
    margin-left:0;
  }
  .main-nav.is-open{display:flex;}
  .nav-link{height:46px;justify-content:flex-start;padding:0 16px;border-radius:12px;}
  .header-inner{position:relative;justify-content:space-between;}
  .header-actions .btn{display:none;}
  .brand-sub{display:none;}
}
@media (max-width:768px){
  .section{padding:56px 0;}
  .section-tight{padding:44px 0;}
  .compare-grid{grid-template-columns:1fr;}
  .tile-grid{grid-template-columns:1fr;}
  .cta-block{padding:38px 24px;border-radius:20px;}
  .faq-body{padding-left:22px;}
  .hero-points{gap:8px 18px;font-size:13.4px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .steps-grid{grid-template-columns:1fr;}
  .stat-grid{grid-template-columns:1fr;}
  .hero h1{font-size:27px;}
  .hero-lead{font-size:15px;}
  .btn{height:44px;padding:0 20px;font-size:14.4px;}
  .brand-mark{width:42px;height:42px;flex-basis:42px;font-size:14px;}
  .brand-name{font-size:14.5px;white-space:normal;}
  .faq-item summary{font-size:15px;padding:17px 16px;}
  .compare-card{padding:24px 20px;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: category3 */
:root{
  --brand:#3056ff;
  --brand-dark:#1c39c9;
  --brand-soft:rgba(48,86,255,.10);
  --accent:#00c2a8;
  --accent-soft:rgba(0,194,168,.12);
  --warn:#ff8a3d;
  --warn-soft:rgba(255,138,61,.13);
  --ink:#101a2e;
  --ink-2:#3d4a5f;
  --muted:#6d788a;
  --line:#e3e8f2;
  --bg:#f4f6fb;
  --white:#ffffff;
  --dark:#0d1730;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:26px;
  --shadow-sm:0 4px 14px rgba(16,26,46,.06);
  --shadow:0 14px 34px rgba(16,26,46,.10);
  --shadow-lg:0 28px 64px rgba(16,26,46,.18);
  --sp:clamp(54px,7vw,98px);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.78;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease}
button{font:inherit;cursor:pointer}
h1,h2,h3,h4,h5{margin:0 0 .62em;font-weight:700;line-height:1.24;color:var(--ink);letter-spacing:-.01em}
h1{font-size:clamp(28px,3.6vw,44px)}
h2{font-size:clamp(23px,2.7vw,34px)}
h3{font-size:clamp(18px,1.6vw,21px)}
p{margin:0 0 1em;color:var(--ink-2)}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(48,86,255,.45);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1180px;margin:0 auto;padding:0 22px}
.section{padding:var(--sp) 0}
.section--tight{padding:calc(var(--sp) * .68) 0}
.section-head{max-width:760px;margin:0 0 clamp(28px,3.4vw,46px)}
.section-head.is-center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.06em;
  color:var(--brand);background:var(--brand-soft);
  padding:7px 14px;border-radius:999px;margin-bottom:16px;
}
.eyebrow i{font-size:12px}
.section-head p{font-size:16.5px;margin-bottom:0}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.93);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 12px 32px rgba(16,26,46,.09)}
.header-inner{display:flex;align-items:center;gap:16px;min-height:76px;position:relative}
.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand-mark{
  width:44px;height:44px;flex:none;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand) 0%,#5b7bff 100%);
  color:#fff;font-size:14px;font-weight:800;letter-spacing:.02em;
  border-radius:14px;box-shadow:0 8px 20px rgba(48,86,255,.32);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:16px;font-weight:800;color:var(--ink);letter-spacing:-.01em}
.brand-sub{font-size:11.5px;color:var(--muted);letter-spacing:.02em}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  padding:9px 15px;border-radius:999px;
  font-size:14.5px;font-weight:600;color:var(--ink-2);
  white-space:nowrap;transition:all .2s ease;
}
.nav-link:hover{background:var(--brand-soft);color:var(--brand-dark)}
.nav-link.is-active{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(48,86,255,.28)}
.header-actions{display:flex;align-items:center;gap:10px;flex:none}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:700;line-height:1;
  cursor:pointer;transition:transform .18s ease,box-shadow .22s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
  min-height:46px;text-align:center;
}
.btn i{font-size:13px}
.btn-primary{background:linear-gradient(135deg,var(--brand) 0%,#4a70ff 100%);color:#fff;box-shadow:0 12px 26px rgba(48,86,255,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(48,86,255,.4);color:#fff}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.42)}
.btn-ghost:hover{background:#fff;color:var(--brand-dark);border-color:#fff;transform:translateY(-2px)}
.btn-outline{background:#fff;color:var(--brand-dark);border-color:var(--line)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.btn-sm{padding:10px 18px;font-size:14px;min-height:40px}
.btn-lg{padding:16px 32px;font-size:16px;min-height:54px}

.nav-toggle{
  display:none;width:46px;height:46px;flex:none;
  border:1px solid var(--line);border-radius:14px;background:#fff;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:19px;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s ease,opacity .2s ease}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:#0d1730 url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color:#fff;padding:clamp(60px,7.6vw,104px) 0 clamp(64px,8vw,108px);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(122deg,rgba(8,14,34,.95) 0%,rgba(14,28,68,.88) 48%,rgba(28,60,150,.74) 100%);
}
.page-hero::after{
  content:"";position:absolute;right:-160px;top:-120px;width:520px;height:520px;
  background:radial-gradient(circle,rgba(0,194,168,.35) 0%,rgba(0,194,168,0) 68%);
}
.page-hero .container{position:relative;z-index:2}
.hero-copy{color:#fff}
.hero-copy h1{color:#fff;margin-bottom:18px}
.hero-copy .lead{font-size:17px;color:rgba(255,255,255,.82);max-width:620px;margin-bottom:26px}
.hero-breadcrumb{display:flex;align-items:center;gap:9px;font-size:13.5px;color:rgba(255,255,255,.68);margin-bottom:18px}
.hero-breadcrumb a:hover{color:#fff}
.hero-breadcrumb i{font-size:10px;opacity:.7}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:30px}
.tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:999px;font-size:13px;font-weight:600;
  background:rgba(255,255,255,.12);color:rgba(255,255,255,.9);
  border:1px solid rgba(255,255,255,.18);
}
.tag i{font-size:11px;color:var(--accent)}
.hero-actions{display:flex;flex-wrap:wrap;gap:13px}

.panel{
  background:rgba(255,255,255,.97);
  border-radius:var(--radius-lg);
  padding:26px 24px;
  box-shadow:var(--shadow-lg);
  color:var(--ink);
}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.panel-head h3{margin:0;font-size:18px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:12px;font-weight:700;
}
.badge-live{background:var(--accent-soft);color:#0b8a78}
.badge-soft{background:var(--brand-soft);color:var(--brand-dark)}
.badge-warn{background:var(--warn-soft);color:#c25c14}
.status-list{display:flex;flex-direction:column;gap:11px}
.status-item{
  display:flex;align-items:flex-start;gap:12px;
  padding:13px 14px;border-radius:var(--radius);background:#f7f9ff;border:1px solid #eaeffe;
}
.status-item .dot{
  width:30px;height:30px;flex:none;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;font-size:13px;
  background:var(--brand-soft);color:var(--brand-dark);
}
.status-item strong{display:block;font-size:14.5px;color:var(--ink);margin-bottom:2px}
.status-item span{font-size:13px;color:var(--muted);line-height:1.6}
.panel-foot{margin-top:18px;padding-top:16px;border-top:1px dashed var(--line);font-size:13px;color:var(--muted)}

/* ---------- cards ---------- */
.card{
  height:100%;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .24s ease,border-color .22s ease;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:rgba(48,86,255,.28)}
.card-icon{
  width:48px;height:48px;border-radius:14px;flex:none;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:18px;background:var(--brand-soft);color:var(--brand-dark);
  margin-bottom:16px;
}
.card h3{margin-bottom:9px}
.card p{font-size:14.6px;color:var(--muted);margin-bottom:16px}
.card-note{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  font-size:13.5px;color:var(--brand-dark);font-weight:600;
  display:flex;align-items:center;gap:8px;
}
.card-note i{font-size:12px;color:var(--accent)}

/* ---------- split ---------- */
.split{display:grid;grid-template-columns:1.02fr 1fr;gap:clamp(28px,4vw,58px);align-items:center}
.split-media{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow)}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split-media .floating{
  position:absolute;left:18px;bottom:18px;
  background:rgba(255,255,255,.96);border-radius:var(--radius);
  padding:14px 18px;box-shadow:var(--shadow);font-size:13.5px;color:var(--ink-2);
  max-width:78%;
}
.split-media .floating strong{display:block;color:var(--ink);font-size:14.5px;margin-bottom:3px}
.check-list{display:flex;flex-direction:column;gap:14px}
.check-list li{
  display:flex;gap:14px;align-items:flex-start;
  padding:16px 18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
}
.check-list .num{
  width:32px;height:32px;flex:none;border-radius:11px;
  background:var(--brand-soft);color:var(--brand-dark);
  display:inline-flex;align-items:center;justify-content:center;font-size:13.5px;font-weight:800;
}
.check-list strong{display:block;font-size:15px;margin-bottom:3px;color:var(--ink)}
.check-list span{font-size:14px;color:var(--muted);line-height:1.7}

/* ---------- steps ---------- */
.steps{display:grid;gap:16px}
.step{
  display:grid;grid-template-columns:88px 1fr auto;gap:22px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 26px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .22s ease;
}
.step:hover{transform:translateX(5px);box-shadow:var(--shadow)}
.step-index{
  font-size:26px;font-weight:800;letter-spacing:-.02em;
  color:var(--brand);opacity:.85;
}
.step-body h3{margin-bottom:6px}
.step-body p{margin:0;font-size:14.6px;color:var(--muted)}
.step-meta{font-size:13px;font-weight:700;color:var(--brand-dark);background:var(--brand-soft);padding:7px 14px;border-radius:999px;white-space:nowrap}

/* ---------- notice ---------- */
.notice{
  display:flex;gap:16px;align-items:flex-start;
  background:linear-gradient(120deg,#fff 0%,#f6f9ff 100%);
  border:1px solid #dfe8ff;border-left:5px solid var(--brand);
  border-radius:var(--radius);padding:22px 24px;box-shadow:var(--shadow-sm);
}
.notice i{font-size:20px;color:var(--brand);margin-top:3px}
.notice strong{display:block;font-size:15.5px;margin-bottom:5px;color:var(--ink)}
.notice p{font-size:14.5px;color:var(--muted);margin:0}

/* ---------- compare ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.compare-col{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;box-shadow:var(--shadow-sm)}
.compare-col.is-accent{background:linear-gradient(150deg,#0f1c3d 0%,#16295c 100%);border-color:transparent;color:#fff}
.compare-col.is-accent h3{color:#fff}
.compare-col.is-accent li{color:rgba(255,255,255,.82)}
.compare-col h3{display:flex;align-items:center;gap:10px;font-size:18px}
.compare-col h3 i{font-size:16px;color:var(--brand)}
.compare-col.is-accent h3 i{color:var(--accent)}
.compare-col ul{display:flex;flex-direction:column;gap:12px;margin-top:8px}
.compare-col li{display:flex;gap:11px;font-size:14.6px;color:var(--ink-2);line-height:1.7}
.compare-col li i{font-size:13px;color:var(--accent);margin-top:6px}

/* ---------- faq ---------- */
.faq-wrap{display:grid;gap:14px;max-width:900px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);overflow:hidden;transition:border-color .2s ease,box-shadow .22s ease;
}
.faq-item[open]{border-color:rgba(48,86,255,.32);box-shadow:var(--shadow)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 56px 20px 24px;position:relative;
  font-size:16px;font-weight:700;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:24px;top:50%;transform:translateY(-50%);
  font-size:13px;color:var(--brand);transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(180deg)}
.faq-body{padding:0 24px 22px;font-size:14.8px;color:var(--muted);line-height:1.85}
.faq-body p{margin:0 0 .8em;font-size:14.8px;color:var(--muted)}
.faq-body p:last-child{margin-bottom:0}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;color:#fff;
  background:#0c1732 url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  border-radius:var(--radius-lg);padding:clamp(38px,4.6vw,62px);
  box-shadow:var(--shadow-lg);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(9,16,38,.95) 0%,rgba(20,42,110,.86) 58%,rgba(0,194,168,.42) 100%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.5fr 1fr;gap:36px;align-items:center}
.cta-inner h2{color:#fff;margin-bottom:14px}
.cta-inner p{color:rgba(255,255,255,.82);margin-bottom:24px;font-size:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:13px}
.cta-side{
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);
  border-radius:var(--radius);padding:22px;backdrop-filter:blur(6px);
}
.cta-side h4{color:#fff;font-size:15px;margin-bottom:12px}
.cta-side ul{display:flex;flex-direction:column;gap:10px}
.cta-side li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.84)}
.cta-side li i{color:var(--accent);font-size:12px;margin-top:6px}

/* ---------- footer ---------- */
.site-footer{background:#0b1428;color:rgba(255,255,255,.72);padding:66px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:38px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-brand .brand-mark{background:linear-gradient(135deg,var(--brand) 0%,#5b7bff 100%)}
.footer-brand .brand-text{line-height:1.3}
.site-footer p{color:rgba(255,255,255,.62);font-size:14px;line-height:1.85}
.site-footer h3{color:#fff;font-size:15.5px;margin-bottom:16px;letter-spacing:.01em}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.7)}
.footer-links a:hover{color:#fff;transform:translateX(3px)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .main-nav{
    position:absolute;left:0;right:0;top:calc(100% + 10px);
    display:none;flex-direction:column;align-items:stretch;gap:5px;
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);
    box-shadow:var(--shadow-lg);padding:12px;margin-left:0;
  }
  .main-nav.is-open{display:flex}
  .nav-link{padding:13px 16px;border-radius:12px;font-size:15px}
  .nav-toggle{display:inline-flex}
  .split,.compare,.cta-inner{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .step{grid-template-columns:64px 1fr;gap:16px}
  .step-meta{grid-column:2;justify-self:start}
}
@media (max-width:767px){
  .header-inner{min-height:68px;gap:10px}
  .brand-sub{display:none}
  .brand-mark{width:40px;height:40px;font-size:13px;border-radius:12px}
  .brand-name{font-size:15px}
  .header-actions .btn-sm{display:none}
  .page-hero{padding:48px 0 62px}
  .hero-copy .lead{font-size:15.8px}
  .panel{padding:22px 18px;border-radius:var(--radius)}
  .card{padding:22px 20px}
  .step{padding:18px 18px;grid-template-columns:1fr}
  .step-index{font-size:22px}
  .step-meta{grid-column:1}
  .faq-item summary{padding:17px 48px 17px 18px;font-size:15px}
  .faq-body{padding:0 18px 18px}
  .cta-band{padding:32px 22px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .btn{width:100%;padding:14px 20px}
  .btn-sm{width:auto}
  .hero-actions{flex-direction:column;align-items:stretch}
  .cta-actions{flex-direction:column;align-items:stretch}
  .tag{font-size:12.5px}
}

/* roulang page: category4 */
:root{
  --brand:#2b5cff;
  --brand-dark:#1a3ed1;
  --brand-soft:#eef2ff;
  --brand-softer:#f7f9ff;
  --accent:#ff6a3d;
  --accent-soft:#fff1ec;
  --ink:#0e1730;
  --ink-2:#1b2540;
  --text:#3d4863;
  --muted:#78839c;
  --line:#e3e8f4;
  --bg:#f5f7fc;
  --white:#ffffff;
  --ok:#0f9b6c;
  --warn:#e8a020;
  --radius-xs:8px;
  --radius-sm:12px;
  --radius:18px;
  --radius-lg:26px;
  --radius-pill:999px;
  --shadow-xs:0 1px 4px rgba(14,23,48,.05);
  --shadow-sm:0 4px 14px rgba(14,23,48,.07);
  --shadow:0 14px 38px rgba(14,23,48,.10);
  --shadow-lg:0 26px 64px rgba(14,23,48,.16);
  --maxw:1180px;
  --gap:24px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .22s ease,opacity .22s ease;}
a:hover{color:var(--brand-dark);}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.3;font-weight:800;letter-spacing:-.2px;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
figure{margin:0;}
input,select,textarea{font-family:inherit;font-size:15px;}
:focus-visible{outline:3px solid rgba(43,92,255,.45);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 22px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-pill);border:1px solid transparent;
  font-size:15px;font-weight:700;line-height:1;letter-spacing:.2px;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
  white-space:nowrap;
}
.btn i{font-size:14px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px rgba(43,92,255,.28);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(43,92,255,.34);}
.btn-ghost{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.34);}
.btn-ghost:hover{background:rgba(255,255,255,.2);color:#fff;border-color:rgba(255,255,255,.6);transform:translateY(-2px);}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--line);box-shadow:var(--shadow-xs);}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-sm);}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 10px 24px rgba(255,106,61,.3);}
.btn-accent:hover{background:#f2571f;color:#fff;transform:translateY(-2px);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-block{width:100%;}
.btn:active{transform:translateY(0) scale(.99);}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:20px;min-height:74px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:46px;height:46px;border-radius:14px;
  background:linear-gradient(135deg,#2b5cff,#5b8cff);
  color:#fff;font-size:15px;font-weight:800;letter-spacing:.5px;
  box-shadow:0 8px 20px rgba(43,92,255,.3);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-size:16px;font-weight:800;color:var(--ink);letter-spacing:-.2px;}
.brand-sub{font-size:11.5px;color:var(--muted);letter-spacing:.3px;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;padding:9px 14px;border-radius:var(--radius-pill);
  font-size:14.5px;font-weight:600;color:var(--ink-2);
  transition:background .2s ease,color .2s ease;
}
.nav-link:hover{background:var(--brand-soft);color:var(--brand);}
.nav-link.is-active{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(43,92,255,.26);}
.nav-link.is-active:hover{background:var(--brand-dark);color:#fff;}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
  background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:5px;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .25s ease,opacity .25s ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(115deg,rgba(9,16,38,.94),rgba(20,40,110,.86)),url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding:74px 0 78px;
}
.page-hero::after{
  content:"";position:absolute;right:-160px;top:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(95,140,255,.42),transparent 68%);pointer-events:none;
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:46px;align-items:center;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:18px;}
.breadcrumb a{color:rgba(255,255,255,.78);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb i{font-size:9px;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.24);
  font-size:13px;font-weight:600;color:#e8eeff;margin-bottom:20px;
}
.hero-tag .dot{width:7px;height:7px;border-radius:50%;background:#4ade80;box-shadow:0 0 0 4px rgba(74,222,128,.22);}
.page-hero h1{font-size:40px;color:#fff;letter-spacing:-.6px;margin-bottom:18px;}
.page-hero h1 em{font-style:normal;color:#8fb3ff;}
.hero-lead{font-size:16.5px;color:rgba(255,255,255,.82);max-width:620px;margin-bottom:26px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;}
.hero-points span{
  display:inline-flex;align-items:center;gap:7px;padding:8px 14px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.16);
  font-size:13.5px;color:rgba(255,255,255,.9);
}
.hero-points i{color:#8fb3ff;font-size:12px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}

.hero-panel{
  background:rgba(255,255,255,.97);border-radius:var(--radius-lg);padding:26px;
  box-shadow:var(--shadow-lg);color:var(--text);
}
.hero-panel h3{font-size:17px;margin-bottom:6px;}
.hero-panel .panel-note{font-size:13.5px;color:var(--muted);margin-bottom:18px;}
.quick-list{display:flex;flex-direction:column;gap:10px;}
.quick-item{
  display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:var(--radius-sm);
  background:var(--brand-softer);border:1px solid var(--line);transition:border-color .2s,transform .2s,box-shadow .2s;
}
.quick-item:hover{border-color:#c7d4ff;transform:translateX(3px);box-shadow:var(--shadow-xs);}
.quick-item .qi-icon{
  width:36px;height:36px;border-radius:11px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);font-size:15px;
}
.quick-item b{display:block;font-size:14.5px;color:var(--ink);font-weight:700;}
.quick-item small{font-size:12.5px;color:var(--muted);}
.quick-item .qi-count{margin-left:auto;font-size:12px;font-weight:700;color:var(--brand);background:var(--brand-soft);padding:4px 10px;border-radius:var(--radius-pill);}

/* ---------- section base ---------- */
.section{padding:74px 0;}
.section-alt{background:#fff;}
.section-head{max-width:760px;margin-bottom:42px;}
.section-label{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--radius-pill);
  background:var(--brand-soft);color:var(--brand);font-size:12.5px;font-weight:700;letter-spacing:.4px;
  margin-bottom:16px;
}
.section-head h2{font-size:31px;letter-spacing:-.4px;margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--muted);}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}

/* ---------- stats strip ---------- */
.stats-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
  margin-top:-46px;position:relative;z-index:5;
}
.stat-card{
  background:#fff;border-radius:var(--radius);padding:22px 22px 20px;
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:transform .24s ease,box-shadow .24s ease;
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.stat-card .sv{font-size:29px;font-weight:800;color:var(--ink);letter-spacing:-.6px;}
.stat-card .sv small{font-size:15px;color:var(--brand);font-weight:700;margin-left:3px;}
.stat-card .sl{font-size:13.5px;color:var(--muted);margin-top:5px;}

/* ---------- symptom tags ---------- */
.tag-cloud{display:flex;flex-wrap:wrap;gap:12px;}
.tag-chip{
  display:inline-flex;align-items:center;gap:9px;
  padding:12px 18px;border-radius:var(--radius-pill);
  background:#fff;border:1px solid var(--line);
  font-size:14.5px;font-weight:600;color:var(--ink-2);
  box-shadow:var(--shadow-xs);
  transition:all .22s ease;
}
.tag-chip i{color:var(--brand);font-size:13px;}
.tag-chip:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-3px);box-shadow:var(--shadow-sm);}
.tag-chip .cnt{
  padding:2px 9px;border-radius:var(--radius-pill);background:var(--brand-soft);
  color:var(--brand);font-size:12px;font-weight:800;
}

/* ---------- ladder ---------- */
.ladder{display:flex;flex-direction:column;gap:16px;}
.ladder-row{
  display:grid;grid-template-columns:88px 1fr auto;gap:22px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 26px;box-shadow:var(--shadow-xs);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.ladder-row:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#cfd9ff;}
.ladder-level{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  width:72px;height:72px;border-radius:20px;font-weight:800;
  background:var(--brand-soft);color:var(--brand);font-size:13px;
}
.ladder-level b{font-size:25px;line-height:1;margin-bottom:2px;}
.ladder-body h3{font-size:17.5px;margin-bottom:7px;}
.ladder-body p{font-size:14.5px;color:var(--muted);}
.ladder-meta{display:flex;align-items:center;gap:10px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--radius-pill);
  font-size:12.5px;font-weight:700;white-space:nowrap;
}
.badge-easy{background:#e9f8f1;color:var(--ok);}
.badge-mid{background:#fff5e2;color:var(--warn);}
.badge-hard{background:var(--accent-soft);color:var(--accent);}
.badge-soft{background:var(--brand-soft);color:var(--brand);}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step;}
.step-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 22px 24px;box-shadow:var(--shadow-xs);
  transition:transform .24s ease,box-shadow .24s ease;
}
.step-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);}
.step-num{
  position:absolute;top:-16px;left:22px;width:42px;height:42px;border-radius:13px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#2b5cff,#5b8cff);color:#fff;font-weight:800;font-size:16px;
  box-shadow:0 10px 22px rgba(43,92,255,.3);
}
.step-card h3{font-size:16.5px;margin:20px 0 9px;}
.step-card p{font-size:14px;color:var(--muted);}

/* ---------- ranking ---------- */
.rank-layout{display:grid;grid-template-columns:1.35fr .65fr;gap:34px;align-items:start;}
.rank-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:12px;box-shadow:var(--shadow-xs);}
.rank-item{
  display:flex;align-items:flex-start;gap:16px;padding:18px 18px;border-radius:var(--radius-sm);
  transition:background .2s ease;
}
.rank-item + .rank-item{border-top:1px solid var(--line);}
.rank-item:hover{background:var(--brand-softer);}
.rank-no{
  width:32px;height:32px;border-radius:10px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:14px;background:#f0f3fa;color:var(--muted);
}
.rank-item:nth-child(1) .rank-no{background:#ffe9e0;color:#f2571f;}
.rank-item:nth-child(2) .rank-no{background:#e8eeff;color:var(--brand);}
.rank-item:nth-child(3) .rank-no{background:#e9f8f1;color:var(--ok);}
.rank-body{flex:1;min-width:0;}
.rank-body h3{font-size:15.5px;margin-bottom:6px;}
.rank-body p{font-size:13.8px;color:var(--muted);margin-bottom:9px;}
.rank-tags{display:flex;flex-wrap:wrap;gap:8px;}
.mini-tag{font-size:12px;padding:4px 10px;border-radius:var(--radius-pill);background:var(--brand-soft);color:var(--brand);font-weight:600;}
.rank-count{font-size:12.5px;color:var(--muted);white-space:nowrap;padding-top:4px;}
.rank-count b{color:var(--ink);font-size:15px;}

.side-card{
  background:linear-gradient(160deg,#132043,#1c2f66);
  border-radius:var(--radius-lg);padding:28px;color:#fff;box-shadow:var(--shadow);
}
.side-card h3{color:#fff;font-size:18px;margin-bottom:10px;}
.side-card p{font-size:14px;color:rgba(255,255,255,.72);margin-bottom:20px;}
.side-list{display:flex;flex-direction:column;gap:12px;margin-bottom:22px;}
.side-list li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.85);}
.side-list i{color:#8fb3ff;margin-top:5px;font-size:12px;}
.side-card .btn{width:100%;}

/* ---------- discussion ---------- */
.discuss-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.discuss-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-xs);display:flex;flex-direction:column;
  transition:transform .24s ease,box-shadow .24s ease;
}
.discuss-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);}
.dc-head{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.avatar{
  width:44px;height:44px;border-radius:50%;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;color:#fff;
  background:linear-gradient(135deg,#2b5cff,#7aa2ff);
}
.avatar.a2{background:linear-gradient(135deg,#ff6a3d,#ffa07a);}
.avatar.a3{background:linear-gradient(135deg,#0f9b6c,#4fd1a5);}
.dc-head b{display:block;font-size:14.5px;color:var(--ink);}
.dc-head small{font-size:12.5px;color:var(--muted);}
.discuss-card p{font-size:14.5px;color:var(--text);flex:1;}
.dc-foot{
  display:flex;align-items:center;gap:16px;margin-top:18px;padding-top:16px;
  border-top:1px solid var(--line);font-size:12.8px;color:var(--muted);
}
.dc-foot span{display:inline-flex;align-items:center;gap:6px;}
.dc-foot i{font-size:12px;color:var(--brand);}

/* ---------- image feature ---------- */
.feature-split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;}
.feature-figure{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);}
.feature-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11;}
.feature-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:22px;
  background:linear-gradient(to top,rgba(9,16,38,.88),transparent);
  color:#fff;font-size:13.5px;
}
.feature-list{display:flex;flex-direction:column;gap:18px;}
.feature-item{display:flex;gap:16px;}
.feature-item .fi-icon{
  width:44px;height:44px;border-radius:14px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);font-size:17px;
}
.feature-item h3{font-size:16.5px;margin-bottom:6px;}
.feature-item p{font-size:14.5px;color:var(--muted);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-xs);transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item[open]{border-color:#cfd9ff;box-shadow:var(--shadow-sm);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 56px 20px 24px;position:relative;
  font-size:16px;font-weight:700;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:22px;top:50%;transform:translateY(-50%);
  width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);font-size:12px;transition:transform .28s ease,background .28s ease;
}
.faq-item[open] summary::after{content:"\f068";transform:translateY(-50%) rotate(180deg);background:var(--brand);color:#fff;}
.faq-item summary:hover{color:var(--brand);}
.faq-body{padding:0 24px 22px;font-size:14.8px;color:var(--text);}
.faq-body p + p{margin-top:10px;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  background:linear-gradient(120deg,rgba(11,20,48,.95),rgba(28,47,102,.88)),url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  padding:52px 46px;color:#fff;
  display:grid;grid-template-columns:1.4fr .6fr;gap:34px;align-items:center;
}
.cta-band h2{color:#fff;font-size:29px;margin-bottom:14px;letter-spacing:-.4px;}
.cta-band p{color:rgba(255,255,255,.78);font-size:15.5px;max-width:640px;}
.cta-actions{display:flex;flex-direction:column;gap:12px;}

/* ---------- footer ---------- */
.site-footer{background:#0b1226;color:rgba(255,255,255,.68);padding:60px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px;padding-bottom:38px;border-bottom:1px solid rgba(255,255,255,.1);}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);}
.site-footer h3{font-size:15px;color:#fff;margin-bottom:16px;font-weight:700;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.66);}
.footer-links a:hover{color:#8fb3ff;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  padding-top:22px;font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .header-inner{flex-wrap:wrap;}
  .main-nav{order:3;width:100%;margin-left:0;display:none;flex-direction:column;align-items:stretch;gap:6px;padding:10px 0 16px;}
  .main-nav.is-open{display:flex;}
  .nav-link{padding:13px 16px;border-radius:var(--radius-sm);font-size:15px;}
  .header-actions{margin-left:auto;}
  .nav-toggle{display:flex;}
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .page-hero h1{font-size:33px;}
  .stats-strip{grid-template-columns:repeat(2,1fr);margin-top:-34px;}
  .steps{grid-template-columns:repeat(2,1fr);gap:26px 20px;}
  .rank-layout{grid-template-columns:1fr;}
  .discuss-grid{grid-template-columns:1fr 1fr;}
  .feature-split{grid-template-columns:1fr;gap:30px;}
  .cta-band{grid-template-columns:1fr;padding:40px 30px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
  .section{padding:56px 0;}
  .page-hero{padding:52px 0 60px;}
  .page-hero h1{font-size:28px;}
  .section-head h2{font-size:25px;}
  .ladder-row{grid-template-columns:64px 1fr;gap:16px;padding:20px;}
  .ladder-level{width:56px;height:56px;border-radius:16px;}
  .ladder-level b{font-size:20px;}
  .ladder-meta{grid-column:2;justify-content:flex-start;}
  .discuss-grid{grid-template-columns:1fr;}
  .brand-sub{display:none;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .page-hero h1{font-size:24px;}
  .hero-lead{font-size:15px;}
  .stats-strip{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .btn{width:100%;}
  .header-actions .btn{width:auto;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}