/* roulang page: index */
:root{
  --primary:#1E5EFF;
  --primary-hover:#1748CC;
  --primary-deep:#14306B;
  --primary-darkest:#0E2350;
  --primary-soft:#E8F0FF;
  --primary-tint:#F5F8FF;
  --accent:#00C2A8;
  --accent-soft:#E6FAF7;
  --warm:#FF8A3D;
  --ink:#0B1220;
  --body:#3C4657;
  --muted:#69748A;
  --line:#E3EAF6;
  --white:#FFFFFF;
  --r-card:16px;
  --r-visual:20px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-card:0 8px 24px rgba(20,60,140,.08);
  --sh-hover:0 16px 36px rgba(20,60,140,.14);
  --sh-dock:0 10px 30px rgba(23,63,150,.10);
  --sp-4:4px;--sp-8:8px;--sp-12:12px;--sp-16:16px;--sp-24:24px;--sp-32:32px;
  --sp-48:48px;--sp-64:64px;--sp-88:88px;--sp-120:120px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.8;color:var(--body);
  background:var(--primary-tint);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,background-color .2s ease;}
a:hover{color:var(--primary-hover);}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.01em;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
.num{font-family:ui-monospace,"SFMono-Regular",Inter,monospace;font-variant-numeric:tabular-nums;}

.container{max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section--tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head h2{font-size:clamp(22px,2.4vw,32px);line-height:1.3;}
.section-head p{margin:16px 0 0;color:var(--muted);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--primary);font-weight:600;letter-spacing:.04em;
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);}

/* ---------- Dock 导航 ---------- */
.dock-wrap{position:sticky;top:16px;z-index:60;padding:0 16px;}
.dock{
  max-width:1120px;margin:0 auto;height:64px;
  display:flex;align-items:center;gap:16px;
  padding:0 12px 0 20px;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border:1px solid var(--line);border-radius:var(--r-pill);
  box-shadow:var(--sh-dock);
  transition:height .22s ease,box-shadow .22s ease;
}
.dock.is-scrolled{height:58px;box-shadow:0 14px 34px rgba(23,63,150,.16);}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto;}
.logo:hover{color:var(--ink);}
.logo-mark{
  width:38px;height:38px;border-radius:12px;flex:0 0 auto;
  background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:15px;letter-spacing:.02em;
  box-shadow:0 6px 16px rgba(30,94,255,.28);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text b{font-size:15px;font-weight:700;color:var(--ink);white-space:nowrap;}
.logo-text i{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.02em;}
.dock-nav{display:flex;align-items:center;gap:2px;margin-left:auto;flex-wrap:nowrap;}
.dock-nav a{
  display:inline-block;padding:8px 14px;border-radius:var(--r-pill);
  font-size:14px;color:var(--body);white-space:nowrap;
}
.dock-nav a:hover{background:var(--primary-soft);color:var(--primary);}
.dock-nav a.active{background:var(--primary-soft);color:var(--primary);font-weight:600;}
.dock-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--primary);background:#fff;
  transition:.2s ease;
}
.icon-btn:hover{border-color:var(--primary);background:var(--primary-soft);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn--primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(30,94,255,.24);}
.btn--primary:hover{background:var(--primary-hover);color:#fff;transform:translateY(-2px);box-shadow:0 14px 26px rgba(30,94,255,.28);}
.btn--primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(30,94,255,.22);}
.btn--ghost{background:#fff;color:var(--primary);border:1px solid var(--primary);}
.btn--ghost:hover{background:var(--primary-soft);color:var(--primary);transform:translateY(-2px);}
.btn--warm{background:var(--warm);color:#fff;box-shadow:0 10px 24px rgba(255,138,61,.28);}
.btn--warm:hover{background:#F5761F;color:#fff;transform:translateY(-2px);}
.btn--sm{height:40px;padding:0 16px;font-size:14px;}
.btn--block{width:100%;}
.btn:disabled,.btn.is-disabled{filter:grayscale(40%);opacity:.6;cursor:not-allowed;transform:none;box-shadow:none;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);
  border-bottom:1px solid transparent;padding-bottom:2px;
}
.link-more:hover{border-bottom-color:var(--primary);text-decoration:none;}
.dock-toggle{display:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--line);align-items:center;justify-content:center;color:var(--ink);background:#fff;}
.drawer{
  position:fixed;inset:0 0 0 auto;width:min(320px,86vw);z-index:90;
  background:#fff;box-shadow:-20px 0 50px rgba(14,35,80,.18);
  transform:translateX(102%);transition:transform .28s ease;
  padding:24px 20px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer a{display:block;height:48px;line-height:48px;padding:0 14px;border-radius:12px;color:var(--body);font-size:15px;}
.drawer a:hover,.drawer a.active{background:var(--primary-soft);color:var(--primary);}
.drawer .btn{margin-top:20px;}
.mask{position:fixed;inset:0;background:rgba(11,18,32,.4);z-index:80;opacity:0;pointer-events:none;transition:opacity .28s ease;}
.mask.is-open{opacity:1;pointer-events:auto;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background-image:linear-gradient(rgba(255,255,255,.78),rgba(245,248,255,.9)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  padding:72px 0 88px;margin-top:-80px;
}
.hero-orb{
  position:absolute;top:-140px;left:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(30,94,255,.22) 0%,rgba(30,94,255,0) 68%);
  pointer-events:none;
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center;
  padding-top:96px;
}
.hero h1{font-size:clamp(28px,4vw,46px);line-height:1.15;}
.hero-sub{margin:20px 0 0;font-size:17px;color:var(--body);max-width:520px;}
.hero-cta{display:flex;gap:12px;margin:32px 0 0;flex-wrap:wrap;}
.hero-stats{display:flex;gap:32px;margin-top:40px;flex-wrap:wrap;}
.hero-stat strong{display:block;font-size:20px;color:var(--ink);font-weight:700;}
.hero-stat span{font-size:13px;color:var(--muted);}
.hero-visual{position:relative;}
.hero-shot{
  border-radius:var(--r-visual);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh-hover);transform:rotate(3deg);background:var(--primary-soft);
  aspect-ratio:16/10;
}
.hero-shot img{width:100%;height:100%;object-fit:cover;}
.hero-float{
  position:absolute;left:-18px;bottom:-26px;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--sh-card);padding:14px 18px;min-width:200px;
}
.hero-float b{display:block;font-size:15px;color:var(--ink);}
.hero-float span{font-size:12px;color:var(--muted);}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:12px;line-height:1;font-weight:600;
}
.badge--soft{background:var(--primary-soft);color:var(--primary);}
.badge--accent{background:var(--accent-soft);color:var(--accent);}
.badge--neutral{background:#EEF2F9;color:var(--muted);}
.badge--warm{background:#FFF1E6;color:#D9610F;}

/* ---------- 价值速览 ---------- */
.value-list{display:flex;flex-direction:column;gap:56px;}
.value-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.value-row:nth-child(even) .value-media{order:2;}
.value-media{
  border-radius:var(--r-visual);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh-card);aspect-ratio:16/10;background:var(--primary-soft);
}
.value-media img{width:100%;height:100%;object-fit:cover;}
.value-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:14px;background:var(--primary-soft);color:var(--primary);
  font-weight:700;font-size:18px;margin-bottom:18px;
}
.value-row h3{font-size:20px;margin-bottom:12px;}
.value-row p{color:var(--body);margin-bottom:0;}
.value-caption{font-size:13px;color:var(--muted);margin-top:12px;}

/* ---------- 截图轨道 ---------- */
.track-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;}
.track-arrows{display:flex;gap:10px;}
.arrow{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:#fff;
  color:var(--primary);display:flex;align-items:center;justify-content:center;transition:.2s ease;
}
.arrow:hover{background:var(--primary);border-color:var(--primary);color:#fff;}
.track{
  display:flex;gap:24px;overflow-x:auto;padding:4px 4px 20px;
  scroll-snap-type:x mandatory;scrollbar-width:none;
}
.track::-webkit-scrollbar{display:none;}
.shot-card{
  flex:0 0 340px;scroll-snap-align:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.shot-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--primary-soft);}
.shot-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--primary-soft);}
.shot-body{padding:18px 20px 22px;}
.shot-body h3{font-size:17px;margin-bottom:8px;}
.shot-body p{font-size:14px;color:var(--muted);margin:0;}
.track-bar{height:2px;background:var(--line);border-radius:2px;overflow:hidden;max-width:320px;}
.track-bar i{display:block;height:100%;width:24%;background:var(--primary);border-radius:2px;transition:width .2s ease;}

/* ---------- 系统要求 ---------- */
.sys-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.sys-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:24px;display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.sys-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--primary-soft);}
.sys-icon{
  width:32px;height:32px;border-radius:10px;background:var(--primary-soft);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;margin-bottom:16px;
}
.sys-card h3{font-size:17px;margin-bottom:14px;}
.sys-dl{margin:0;font-size:14px;}
.sys-dl div{display:flex;align-items:baseline;gap:8px;padding:6px 0;}
.sys-dl dt{color:var(--muted);flex:0 0 auto;font-size:13px;}
.sys-dl dd{margin:0;margin-left:auto;color:var(--ink);font-weight:600;text-align:right;}
.sys-dl .dots{flex:1 1 auto;border-bottom:1px dotted var(--line);transform:translateY(-4px);}
.sys-foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);}
.sys-note{
  margin-top:24px;font-size:13px;color:var(--muted);
  background:#fff;border:1px dashed var(--line);border-radius:12px;padding:14px 18px;
}

/* ---------- 评价墙 ---------- */
.review-wall{columns:3;column-gap:24px;}
.review{
  break-inside:avoid;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:22px;margin-bottom:24px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.review:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.review--verified{border-left:3px solid var(--accent);}
.stars{color:var(--warm);font-size:13px;letter-spacing:2px;margin-bottom:12px;}
.review p{font-size:15px;color:var(--body);margin-bottom:18px;}
.review-user{display:flex;align-items:center;gap:12px;}
.avatar{
  width:38px;height:38px;border-radius:50%;background:var(--primary-soft);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;flex:0 0 auto;
}
.review-user b{display:block;font-size:14px;color:var(--ink);}
.review-user span{font-size:12px;color:var(--muted);}

/* ---------- 下载区 ---------- */
.download-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-visual);
  box-shadow:var(--sh-card);padding:40px;
}
.dl-main{
  display:flex;align-items:center;gap:16px;width:100%;height:60px;padding:0 26px;
  border-radius:var(--r-btn);background:var(--warm);color:#fff;font-weight:700;font-size:17px;
  box-shadow:0 12px 28px rgba(255,138,61,.28);
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.dl-main:hover{background:#F5761F;color:#fff;transform:translateY(-2px);box-shadow:0 18px 34px rgba(255,138,61,.32);}
.dl-main small{margin-left:auto;font-size:13px;font-weight:600;opacity:.92;}
.dl-alts{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:16px;}
.dl-alt{
  display:flex;align-items:center;gap:10px;height:52px;padding:0 18px;
  border:1px solid var(--primary);border-radius:var(--r-btn);color:var(--primary);
  background:#fff;font-weight:600;font-size:15px;transition:.2s ease;
}
.dl-alt:hover{background:var(--primary-soft);color:var(--primary);transform:translateY(-2px);}
.dl-alt small{margin-left:auto;font-size:12px;color:var(--muted);}
.dl-hint{margin:18px 0 0;font-size:13px;color:var(--muted);}

/* ---------- 资讯列表 ---------- */
.news-filter{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px;}
.news-filter button{
  height:34px;padding:0 16px;border-radius:var(--r-pill);font-size:13px;
  background:#fff;border:1px solid var(--line);color:var(--body);transition:.2s ease;
}
.news-filter button:hover{border-color:var(--primary);color:var(--primary);}
.news-filter button.active{background:var(--primary-soft);border-color:var(--primary-soft);color:var(--primary);font-weight:600;}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;color:inherit;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--primary-soft);color:inherit;}
.news-thumb{aspect-ratio:16/10;background:var(--primary-soft);overflow:hidden;}
.news-thumb img{width:100%;height:100%;object-fit:cover;}
.news-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1 1 auto;}
.news-body h3{font-size:17px;line-height:1.5;margin:12px 0 10px;}
.news-body p{
  font-size:14px;color:var(--muted);margin:0 0 18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--muted);}
.news-meta .link-more{font-size:13px;}
.empty-state{
  grid-column:1 / -1;background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);
  padding:56px 24px;text-align:center;
}
.empty-state .empty-icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:18px;background:var(--primary-soft);
  color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:22px;
}
.empty-state p{color:var(--muted);margin-bottom:16px;}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;text-align:left;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--ink);
  min-height:60px;transition:color .2s ease,background-color .2s ease;
}
.faq-q:hover{color:var(--primary);}
.faq-item.is-open .faq-q{color:var(--primary);background:var(--primary-tint);}
.faq-sign{
  margin-left:auto;flex:0 0 auto;width:22px;height:22px;position:relative;color:var(--primary);
}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;transition:transform .25s ease;
}
.faq-sign::before{left:4px;top:10px;width:14px;height:2px;}
.faq-sign::after{left:10px;top:4px;width:2px;height:14px;}
.faq-item.is-open .faq-sign::after{transform:rotate(90deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-item.is-open .faq-a{max-height:420px;}
.faq-a p{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--body);margin:0;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--primary-soft);border:1px solid #D8E5FF;border-radius:var(--r-visual);
  padding:48px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(20px,2.2vw,28px);max-width:620px;}
.cta-band p{margin:12px 0 0;color:var(--body);max-width:640px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.footer{background:var(--primary-darkest);color:rgba(255,255,255,.76);margin-top:96px;}
.footer-inner{max-width:1200px;margin:0 auto;padding:72px 32px 32px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;}
.footer h4{color:#fff;font-size:15px;margin-bottom:18px;}
.footer p{font-size:14px;color:rgba(255,255,255,.66);}
.footer a{color:rgba(255,255,255,.78);font-size:14px;display:block;padding:6px 0;}
.footer a:hover{color:var(--accent);}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .logo-mark{box-shadow:none;background:var(--primary);}
.footer-brand b{color:#fff;font-size:15px;}
.footer-brand i{display:block;font-style:normal;font-size:12px;color:rgba(255,255,255,.6);}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- 移动端底部下载条 ---------- */
.mobile-dl{
  position:fixed;left:12px;right:12px;bottom:12px;z-index:70;
  display:none;align-items:center;gap:12px;
  background:rgba(255,255,255,.96);border:1px solid var(--line);border-radius:16px;
  box-shadow:var(--sh-hover);padding:10px 12px;
  transform:translateY(140%);transition:transform .28s ease;
}
.mobile-dl.is-show{transform:translateY(0);}
.mobile-dl .btn{flex:1 1 auto;}
.mobile-dl .close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);color:var(--muted);display:flex;align-items:center;justify-content:center;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .review-wall{columns:2;}
}
@media (max-width:1024px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .dock-nav{display:none;}
  .dock-toggle{display:flex;}
  .dock{gap:10px;}
  .logo-text b{font-size:14px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;padding-top:88px;}
  .hero{padding:56px 0 72px;}
  .hero-visual{max-width:620px;}
  .value-row{grid-template-columns:1fr;gap:24px;}
  .value-row:nth-child(even) .value-media{order:0;}
  .sys-grid{grid-template-columns:repeat(2,1fr);}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .dl-alts{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 24px;}
  .cta-band{padding:36px;}
}
@media (max-width:767px){
  .review-wall{columns:1;}
  .footer-inner{padding:56px 20px 28px;}
}
@media (max-width:640px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .dock-wrap{padding:0 12px;}
  .dock{height:58px;padding:0 10px 0 14px;}
  .logo-text i{display:none;}
  .dock-actions .btn{display:none;}
  .hero{margin-top:-70px;}
  .hero-cta .btn{width:100%;}
  .hero-stats{gap:24px;}
  .sys-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .shot-card{flex:0 0 84vw;}
  .download-panel{padding:24px;}
  .dl-main{height:56px;padding:0 18px;font-size:15px;}
  .dl-main small{display:none;}
  .cta-band{padding:28px 20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .faq-q{padding:16px 18px;font-size:15px;}
  .faq-a p{padding:0 18px 18px;}
  .mobile-dl{display:flex;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}

/* roulang page: article */
:root{
  --primary:#1E5EFF;
  --primary-dark:#1748CC;
  --primary-deep:#14306B;
  --ink-deep:#0E2350;
  --primary-soft:#E8F0FF;
  --primary-tint:#F5F8FF;
  --accent:#00C2A8;
  --accent-soft:#E6FAF7;
  --warm:#FF8A3D;
  --text:#0B1220;
  --body:#3C4657;
  --muted:#69748A;
  --line:#E3EAF6;
  --white:#FFFFFF;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-card:0 8px 24px rgba(20,60,140,.08);
  --sh-hover:0 16px 36px rgba(20,60,140,.14);
  --sh-dock:0 10px 30px rgba(23,63,150,.10);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px;
  --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:88px; --sp-10:120px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:ui-monospace,"SFMono-Regular",Inter,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--body);
  background:var(--primary-tint);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--primary-dark);}
button{font-family:inherit;cursor:pointer;}
input{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;line-height:1.3;}
p{margin:0 0 1.2em;}
ul,ol{margin:0 0 1.2em;padding-left:1.3em;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ============ 浮动 Dock 导航 ============ */
.dock-wrap{
  position:sticky;top:16px;z-index:60;
  padding:0 16px;
  display:flex;justify-content:center;
  transition:top .22s ease;
}
.dock{
  width:100%;max-width:1120px;height:64px;
  display:flex;align-items:center;gap:var(--sp-5);
  padding:0 12px 0 18px;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-dock);
  transition:height .22s ease,box-shadow .22s ease;
}
.dock.shrink{height:58px;box-shadow:0 14px 34px rgba(23,63,150,.16);}
.dock-logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:12px;
  background:var(--primary);color:#fff;
  font-family:var(--font-num);font-size:14px;font-weight:700;letter-spacing:.5px;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text b{font-size:15px;color:var(--ink-deep);font-weight:700;white-space:nowrap;}
.logo-text i{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.4px;}
.dock-nav{
  display:flex;align-items:center;gap:4px;
  flex:1 1 auto;justify-content:center;
  flex-wrap:nowrap;overflow:hidden;
}
.dock-nav a{
  padding:8px 12px;border-radius:var(--r-pill);
  font-size:14px;color:var(--body);white-space:nowrap;
  transition:background .2s ease,color .2s ease;
}
.dock-nav a:hover{background:var(--primary-tint);color:var(--primary);}
.dock-nav a.active{background:var(--primary-soft);color:var(--primary);font-weight:600;}
.dock-right{display:flex;align-items:center;gap:8px;flex:0 0 auto;}
.icon-btn{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:#fff;border-radius:var(--r-pill);
  color:var(--muted);transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.icon-btn:hover{border-color:var(--primary-soft);color:var(--primary);background:var(--primary-tint);}
.icon-btn svg{width:18px;height:18px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:14px;font-weight:600;border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(30,94,255,.24);}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 24px rgba(30,94,255,.28);}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 10px rgba(30,94,255,.22);}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--line);}
.btn-ghost:hover{background:var(--primary-soft);border-color:var(--primary-soft);color:var(--primary);transform:translateY(-2px);}
.btn-warm{background:var(--warm);color:#fff;box-shadow:0 6px 16px rgba(255,138,61,.28);}
.btn-warm:hover{background:#F5761F;color:#fff;transform:translateY(-2px);}
.btn-sm{height:38px;padding:0 16px;font-size:13px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{filter:grayscale(40%);opacity:.6;cursor:not-allowed;transform:none!important;}
.hamburger{display:none;}

/* 抽屉菜单 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,18,32,.42);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:80;
}
.drawer-mask.show{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:280px;max-width:84vw;
  background:#fff;z-index:90;padding:20px 18px;
  transform:translateX(102%);transition:transform .28s ease;
  box-shadow:-16px 0 40px rgba(20,60,140,.14);
  display:flex;flex-direction:column;gap:6px;overflow-y:auto;
}
.drawer.show{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.drawer a.d-item{
  display:flex;align-items:center;min-height:48px;padding:0 12px;border-radius:12px;
  color:var(--body);font-size:15px;border-bottom:1px solid var(--line);
}
.drawer a.d-item:hover{background:var(--primary-tint);color:var(--primary);}
.drawer a.d-item.active{background:var(--primary-soft);color:var(--primary);font-weight:600;}

/* ============ 文章头部 ============ */
.page-head{
  padding:36px 0 8px;
  background:linear-gradient(180deg,#fff 0%,var(--primary-tint) 100%);
}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:6px;
  font-size:13px;color:var(--muted);line-height:1.6;margin-bottom:18px;
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:#B9C4D6;}
.crumb .now{
  color:var(--body);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.article-h1{
  font-size:clamp(28px,4vw,44px);line-height:1.15;letter-spacing:-.5px;
  color:var(--ink-deep);max-width:900px;
}
.article-sub{
  margin-top:14px;max-width:820px;font-size:16px;line-height:1.85;color:var(--muted);
}
.meta-strip{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;
  margin-top:22px;padding-bottom:6px;font-size:13px;color:var(--muted);
}
.meta-strip .chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:12px;font-weight:600;
}
.chip-cat{background:var(--primary-soft);color:var(--primary);}
.chip-accent{background:var(--accent-soft);color:#019B87;}
.chip-neutral{background:#F1F4F9;color:var(--muted);}
.meta-dot{width:5px;height:5px;border-radius:50%;background:var(--accent);display:inline-block;}
.meta-num{font-family:var(--font-num);color:var(--body);}

/* ============ 正文区 ============ */
.layout{
  display:grid;grid-template-columns:minmax(0,1fr);gap:48px;
  padding:40px 0 72px;
}
.article-body-col{min-width:0;}
.article-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:36px 40px;
}
.prose{max-width:820px;margin:0 auto;font-size:16px;line-height:1.9;color:var(--body);}
.prose > *:first-child{margin-top:0;}
.prose p{margin:0 0 1.2em;}
.prose h2{
  position:relative;font-size:clamp(20px,2.2vw,26px);line-height:1.4;
  margin:44px 0 16px;padding-left:16px;color:var(--ink-deep);
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.18em;width:4px;height:1.05em;
  border-radius:2px;background:var(--primary);
}
.prose h3{font-size:19px;margin:32px 0 12px;color:var(--ink-deep);}
.prose ul,.prose ol{padding-left:22px;margin:0 0 1.2em;}
.prose li{margin-bottom:.5em;}
.prose ul li::marker{color:var(--primary);}
.prose ol li::marker{color:var(--primary);font-weight:600;}
.prose blockquote{
  margin:24px 0;padding:18px 22px;background:var(--primary-soft);
  border-left:4px solid var(--primary);border-radius:12px;color:var(--primary-deep);
}
.prose blockquote p:last-child{margin-bottom:0;}
.prose img{
  width:100%;border-radius:var(--r-card);box-shadow:var(--sh-card);margin:24px 0 10px;
}
.prose figure{margin:24px 0;}
.prose figcaption{
  font-size:13px;color:var(--muted);text-align:center;line-height:1.6;margin-top:10px;
}
.prose table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:14px;
  display:block;overflow-x:auto;white-space:nowrap;
}
.prose thead th{
  background:var(--primary-soft);color:var(--primary-deep);font-weight:600;
  text-align:left;padding:12px 16px;border:1px solid var(--line);
}
.prose tbody td{padding:12px 16px;border:1px solid var(--line);vertical-align:top;}
.prose tbody tr:nth-child(even) td{background:var(--primary-tint);}
.prose tbody td:first-child{background:var(--primary-tint);font-weight:600;color:var(--ink-deep);}
.prose a{border-bottom:1px solid rgba(30,94,255,.35);}
.prose a:hover{border-bottom-color:var(--primary-dark);}

/* 空态 */
.empty-state{
  text-align:center;padding:64px 24px;border:1px dashed var(--line);
  border-radius:var(--r-card);background:var(--primary-tint);
}
.empty-ico{
  width:64px;height:64px;margin:0 auto 18px;border-radius:18px;
  background:#fff;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  color:var(--muted);
}
.empty-ico svg{width:28px;height:28px;}
.empty-state h2{font-size:20px;margin-bottom:8px;color:var(--ink-deep);}
.empty-state p{color:var(--muted);font-size:14px;margin-bottom:20px;}

/* 图片骨架 */
.skeleton{
  position:relative;overflow:hidden;background:var(--primary-soft);border-radius:var(--r-card);
}
.skeleton::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.65),transparent);
  transform:translateX(-100%);animation:shimmer 1.4s infinite;
}
@keyframes shimmer{to{transform:translateX(100%);}}

/* 文末区 */
.tail-block{margin-top:32px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:28px;}
.tag-row .label{font-size:13px;color:var(--muted);margin-right:4px;}
.tag{
  display:inline-flex;align-items:center;height:25px;padding:0 12px;
  border-radius:var(--r-pill);background:var(--primary-soft);color:var(--primary);
  font-size:12px;font-weight:600;transition:background .2s ease,transform .2s ease;
}
.tag:hover{background:#D9E7FF;transform:translateY(-2px);color:var(--primary-dark);}
.pager{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-bottom:36px;
}
.pager-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px 20px;box-shadow:var(--sh-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.pager-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--primary-soft);}
.pager-card span{display:block;font-size:12px;color:var(--muted);margin-bottom:6px;}
.pager-card b{display:block;font-size:15px;color:var(--ink-deep);line-height:1.5;}

/* 相关推荐卡片 */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin:0 0 22px;}
.sec-head h2{font-size:clamp(20px,2.4vw,26px);color:var(--ink-deep);}
.sec-head p{margin:6px 0 0;font-size:14px;color:var(--muted);}
.sec-head .more{font-size:14px;font-weight:600;border-bottom:1px solid transparent;transition:border-color .2s ease;}
.sec-head .more:hover{border-bottom-color:var(--primary-dark);}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--primary-soft);}
.card-thumb{aspect-ratio:16/10;background:var(--primary-soft);overflow:hidden;}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.card:hover .card-thumb img{transform:scale(1.04);}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:16px;line-height:1.55;color:var(--ink-deep);}
.card-body p{font-size:13.5px;line-height:1.7;color:var(--muted);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--muted);padding:0 20px 18px;}

/* FAQ */
.faq-wrap{max-width:860px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:60px;padding:12px 24px;background:transparent;border:0;text-align:left;
  font-size:15.5px;font-weight:600;color:var(--ink-deep);transition:color .2s ease,background .2s ease;
}
.faq-q:hover{color:var(--primary);}
.faq-q .plus{
  flex:0 0 auto;width:20px;height:20px;position:relative;transition:transform .25s ease;
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
}
.faq-q .plus::before{left:0;top:9px;width:20px;height:2px;}
.faq-q .plus::after{top:0;left:9px;width:2px;height:20px;}
.faq-item.open .faq-q{color:var(--primary);}
.faq-item.open .plus{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a-inner{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--body);}
.faq-item.open .faq-a{background:var(--primary-tint);}

/* CTA */
.cta-band{
  margin:64px 0 8px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--sh-card);
  padding:44px 40px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;left:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(30,94,255,.16),transparent 70%);
}
.cta-band h2{font-size:clamp(20px,2.4vw,28px);color:var(--ink-deep);position:relative;}
.cta-band p{margin:10px 0 0;color:var(--muted);font-size:15px;position:relative;max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;}

/* 侧栏 */
.sidebar{display:none;}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:22px;margin-bottom:20px;
}
.side-card h3{font-size:16px;margin-bottom:6px;color:var(--ink-deep);}
.side-card p{font-size:13.5px;color:var(--muted);margin:0 0 16px;line-height:1.7;}
.side-row{
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;padding:10px 0;border-bottom:1px dashed var(--line);
}
.side-row:last-of-type{border-bottom:0;}
.side-row span{color:var(--muted);}
.side-row b{font-family:var(--font-num);color:var(--ink-deep);font-size:13px;}
.side-links a{
  display:flex;align-items:center;gap:8px;padding:10px 12px;border-radius:12px;
  font-size:14px;color:var(--body);transition:background .2s ease,color .2s ease;
}
.side-links a::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--primary-soft);
  transition:background .2s ease;
}
.side-links a:hover{background:var(--primary-tint);color:var(--primary);}
.side-links a:hover::before{background:var(--accent);}

/* ============ 页脚 ============ */
.footer{background:var(--ink-deep);color:rgba(255,255,255,.72);margin-top:72px;}
.footer-inner{max-width:1200px;margin:0 auto;padding:72px 32px 32px;}
.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;}
.footer-brand .logo-mark{background:var(--primary);}
.footer-brand b{display:block;color:#fff;font-size:15px;}
.footer-brand i{display:block;font-style:normal;font-size:12px;color:rgba(255,255,255,.55);margin-top:4px;}
.footer p{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.6);max-width:340px;margin:0;}
.footer h4{color:#fff;font-size:14px;margin-bottom:16px;letter-spacing:.3px;}
.footer a{display:block;color:rgba(255,255,255,.68);font-size:13.5px;padding:6px 0;transition:color .2s ease;}
.footer a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* 移动端下载悬浮条 */
.float-bar{
  position:fixed;left:12px;right:12px;bottom:12px;z-index:70;
  background:rgba(255,255,255,.96);backdrop-filter:blur(10px);
  border:1px solid var(--line);border-radius:var(--r-pill);
  box-shadow:0 12px 30px rgba(20,60,140,.16);
  padding:8px 10px;display:none;align-items:center;gap:10px;
  transform:translateY(140%);transition:transform .3s ease;
}
.float-bar.show{transform:translateY(0);}
.float-bar .fb-info{flex:1;min-width:0;}
.float-bar .fb-info b{display:block;font-size:13.5px;color:var(--ink-deep);}
.float-bar .fb-info span{font-size:11.5px;color:var(--muted);}
.float-bar .fb-close{
  width:32px;height:32px;border-radius:50%;border:1px solid var(--line);background:#fff;
  color:var(--muted);display:flex;align-items:center;justify-content:center;font-size:16px;line-height:1;
}

/* 入场动画 */
.reveal{opacity:0;transform:translateY(12px);animation:rise .4s ease forwards;}
@keyframes rise{to{opacity:1;transform:translateY(0);}}

/* ============ 响应式 ============ */
@media (min-width:1280px){
  .layout{grid-template-columns:minmax(0,1fr) 300px;align-items:start;}
  .sidebar{display:block;position:sticky;top:104px;}
}
@media (max-width:1279px){
  .article-card{padding:32px 28px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .dock-nav{display:none;}
  .hamburger{display:inline-flex;}
  .dock{gap:12px;justify-content:space-between;}
  .dock-right .btn{display:none;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .float-bar{display:flex;}
}
@media (max-width:767px){
  .dock-wrap{top:10px;padding:0 12px;}
  .dock{height:58px;padding:0 10px 0 14px;}
  .logo-text i{display:none;}
  .logo-text b{font-size:14px;}
  .page-head{padding:26px 0 4px;}
  .crumb .now{max-width:200px;}
  .article-card{padding:24px 18px;border-radius:var(--r-card);}
  .prose{max-width:100%;}
  .pager{grid-template-columns:minmax(0,1fr);}
  .card-grid{grid-template-columns:minmax(0,1fr);gap:16px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 22px;gap:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .faq-q{padding:12px 18px;font-size:15px;}
  .faq-a-inner{padding:0 18px 20px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .footer-inner{padding:56px 16px 28px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
  .footer p{max-width:100%;}
  .meta-strip{gap:8px 10px;}
  .article-h1{font-size:clamp(24px,7vw,30px);}
  .btn{width:100%;}
  .dock-right .icon-btn{width:36px;height:36px;}
}

/* roulang page: category1 */
:root{
  --primary:#1E5EFF;
  --primary-hover:#1748CC;
  --primary-deep:#14306B;
  --primary-night:#0E2350;
  --primary-soft:#E8F0FF;
  --primary-tint:#F5F8FF;
  --accent:#00C2A8;
  --accent-soft:#E6FAF7;
  --warm:#FF8A3D;
  --ink:#0B1220;
  --body:#3C4657;
  --muted:#69748A;
  --line:#E3EAF6;
  --white:#FFFFFF;
  --danger:#E5484D;
  --r-card:16px;
  --r-hero:20px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-card:0 8px 24px rgba(20,60,140,.08);
  --sh-hover:0 16px 36px rgba(20,60,140,.14);
  --sh-dock:0 10px 30px rgba(23,63,150,.10);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px; --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:88px; --sp-10:120px;
  --mono:ui-monospace,"SFMono-Regular","Inter",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--body);
  background:var(--white);
}
img{display:block;max-width:100%;border:0}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease}
a:hover{color:var(--primary-hover)}
h1,h2,h3,h4,p,ul,ol,li,dl,dt,dd,figure,figcaption{margin:0;padding:0}
ul,ol{list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- 浮动 Dock 导航 ---------- */
.site-dock{position:sticky;top:0;z-index:60;padding:16px 16px 8px}
.dock-shell{
  max-width:1120px;margin:0 auto;height:64px;
  display:flex;align-items:center;gap:18px;
  padding:0 14px 0 16px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border:1px solid var(--line);
  box-shadow:var(--sh-dock);
  transition:height .22s ease,box-shadow .22s ease;
}
.site-dock.is-scrolled .dock-shell{height:58px;box-shadow:0 14px 34px rgba(23,63,150,.16)}
.dock-logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink)}
.logo-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(150deg,#2C6BFF,#14306B);
  color:#fff;font-weight:700;font-size:15px;letter-spacing:.5px;font-family:var(--mono);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text b{font-size:15px;font-weight:700;color:var(--ink);letter-spacing:.2px;white-space:nowrap}
.logo-text i{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.4px}
.dock-nav{display:flex;align-items:center;gap:2px;margin-left:auto;flex-wrap:nowrap}
.dock-nav a{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;
  border-radius:var(--r-pill);font-size:14px;color:var(--body);white-space:nowrap;
  transition:background-color .2s ease,color .2s ease;
}
.dock-nav a:hover{background:var(--primary-tint);color:var(--primary)}
.dock-nav a.active{background:var(--primary-soft);color:var(--primary);font-weight:600}
.dock-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{
  width:38px;height:38px;border-radius:var(--r-pill);
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--muted);background:#fff;
  transition:color .2s ease,border-color .2s ease,background-color .2s ease;
}
.icon-btn:hover{color:var(--primary);border-color:var(--primary-soft);background:var(--primary-tint)}
.icon-btn svg{width:18px;height:18px}
.hamburger{display:none;width:40px;height:40px;border-radius:var(--r-pill);border:1px solid var(--line);align-items:center;justify-content:center;background:#fff}
.hamburger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.hamburger span::before,.hamburger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px}
.hamburger span::before{top:-6px}
.hamburger span::after{top:6px}
.drawer-mask{position:fixed;inset:0;background:rgba(14,35,80,.36);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:70}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:80;
  background:#fff;padding:22px 20px;display:flex;flex-direction:column;gap:4px;
  box-shadow:-18px 0 44px rgba(20,60,140,.18);
  transform:translateX(104%);transition:transform .28s ease;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-title{font-size:13px;color:var(--muted);letter-spacing:.6px;margin-bottom:8px}
.drawer a{height:48px;display:flex;align-items:center;padding:0 14px;border-radius:12px;color:var(--body);font-size:15px}
.drawer a:hover{background:var(--primary-tint);color:var(--primary)}
.drawer a.active{background:var(--primary-soft);color:var(--primary);font-weight:600}
.drawer-close{align-self:flex-end;width:40px;height:40px;border-radius:50%;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--muted);margin-bottom:6px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.2px;text-align:center;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(30,94,255,.24)}
.btn-primary:hover{background:var(--primary-hover);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(30,94,255,.28)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(30,94,255,.22)}
.btn-outline{background:#fff;color:var(--primary);border-color:#C9DBFF}
.btn-outline:hover{background:var(--primary-soft);color:var(--primary);transform:translateY(-2px)}
.btn-outline:active{transform:translateY(0)}
.btn-lg{height:54px;padding:0 28px;font-size:16px}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-xl{height:60px;padding:0 26px;font-size:16px;flex-direction:column;gap:0;line-height:1.35}
.btn-download{background:var(--warm);color:#fff;box-shadow:0 10px 24px rgba(255,138,61,.28)}
.btn-download:hover{background:#F5792A;color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,138,61,.32)}
.btn-download .btn-sub{font-size:12px;font-weight:500;opacity:.92;font-family:var(--mono)}
.btn-text{color:var(--primary);font-weight:600;padding:0;height:auto}
.btn-text span{border-bottom:1px solid transparent;padding-bottom:2px;transition:border-color .2s ease}
.btn-text:hover span{border-color:var(--primary)}
.btn:disabled,.btn.is-disabled{filter:grayscale(40%);opacity:.6;cursor:not-allowed;transform:none}

/* ---------- 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;height:25px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.3px;line-height:1;
}
.badge-soft{background:var(--primary-soft);color:var(--primary)}
.badge-accent{background:var(--accent-soft);color:#0A8F7C}
.badge-version{background:#EEF2F8;color:var(--muted);font-family:var(--mono)}

/* ---------- 内页首屏 ---------- */
.page-hero{
  position:relative;margin-top:-88px;padding:156px 0 64px;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);overflow:hidden;
}
.page-hero::before{content:"";position:absolute;inset:0;background:rgba(255,255,255,.78)}
.hero-glow{
  position:absolute;width:560px;height:560px;left:-160px;top:-220px;border-radius:50%;
  background:radial-gradient(circle,rgba(30,94,255,.16),rgba(30,94,255,0) 68%);
}
.hero-inner{position:relative;z-index:2;max-width:880px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px;flex-wrap:wrap}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span{color:#A9B3C6}
.crumb-current{color:var(--primary);font-weight:600}
.page-hero h1{
  font-size:clamp(28px,4vw,46px);line-height:1.15;font-weight:700;color:var(--ink);
  margin:18px 0 14px;letter-spacing:-.4px;
}
.hero-sub{font-size:17px;color:var(--body);max-width:620px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-facts{display:flex;flex-wrap:wrap;gap:14px 40px;margin-top:36px;padding-top:26px;border-top:1px solid var(--line)}
.hero-facts li{display:flex;flex-direction:column;gap:2px;min-width:120px}
.hero-facts b{font-family:var(--mono);font-size:20px;color:var(--primary-deep);letter-spacing:-.4px}
.hero-facts span{font-size:13px;color:var(--muted)}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section-alt{background:var(--primary-tint)}
.section-head{max-width:760px;margin-bottom:40px}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:1.2px;color:var(--primary);font-weight:600;margin-bottom:10px}
.section-head h2{font-size:clamp(22px,2.4vw,32px);line-height:1.3;font-weight:700;color:var(--ink);margin-bottom:12px}
.section-desc{color:var(--muted);font-size:15px}

/* ---------- 下载面板 ---------- */
.dl-board{display:grid;grid-template-columns:1.35fr 1fr;gap:24px}
.dl-primary-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-card);
  padding:28px;display:flex;flex-direction:column;gap:14px;
}
.dl-primary-head{display:flex;align-items:center;gap:10px}
.os-chip{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:var(--primary-soft);color:var(--primary);font-size:13px;font-weight:600;
}
.os-chip svg{width:16px;height:16px}
.dl-primary-title{font-size:19px;font-weight:700;color:var(--ink)}
.dl-primary-meta{font-size:13px;color:var(--muted);font-family:var(--mono)}
.dl-others{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:16px}
.dl-other{
  display:flex;flex-direction:column;gap:2px;align-items:flex-start;
  padding:14px 16px;border:1px solid #C9DBFF;border-radius:var(--r-btn);background:#fff;
  color:var(--primary);font-size:14px;font-weight:600;
  transition:background-color .2s ease,transform .2s ease,border-color .2s ease;
}
.dl-other em{font-style:normal;font-size:12px;color:var(--muted);font-family:var(--mono)}
.dl-other:hover{background:var(--primary-soft);transform:translateY(-2px);border-color:var(--primary-soft)}
.dl-verify{
  grid-row:1 / span 2;grid-column:2;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-card);
  padding:26px;display:flex;flex-direction:column;gap:6px;
}
.dl-verify h3{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:8px}
.spec-row{display:flex;align-items:baseline;gap:8px;padding:10px 0;border-bottom:1px dashed var(--line);font-size:14px}
.spec-row:last-child{border-bottom:0}
.spec-row .k{color:var(--muted);white-space:nowrap}
.spec-row .dots{flex:1 1 auto;min-width:12px;border-bottom:1px dotted #CFDCEE;transform:translateY(-4px)}
.spec-row .v{color:var(--ink);font-weight:600;font-family:var(--mono);font-size:13px;text-align:right}
.verify-note{margin-top:12px;font-size:13px;color:var(--muted);line-height:1.7}

/* ---------- 安装步骤 ---------- */
.steps{display:flex;flex-direction:column;gap:64px}
.step{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.step:nth-child(even) .step-media{order:2}
.step-media{
  border-radius:var(--r-hero);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh-card);background:var(--primary-soft);
}
.step-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.step-media figcaption{font-size:13px;color:var(--muted);padding:10px 16px;background:#fff;border-top:1px solid var(--line);text-align:center}
.step-index{
  font-family:var(--mono);font-size:13px;font-weight:700;color:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;background:var(--primary-soft);margin-bottom:16px;
}
.step-body h3{font-size:20px;font-weight:700;color:var(--ink);margin-bottom:12px}
.step-body p{font-size:15px;color:var(--body)}
.step-body p + p{margin-top:10px}

/* ---------- 系统要求 ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.spec-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-card);
  padding:24px;display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.spec-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--primary-soft)}
.spec-card-head{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.spec-icon{
  width:32px;height:32px;border-radius:9px;background:var(--primary-soft);
  display:flex;align-items:center;justify-content:center;color:var(--primary);flex:0 0 32px;
}
.spec-icon svg{width:17px;height:17px}
.spec-card-head b{font-size:16px;color:var(--ink)}
.spec-card .spec-row .v{font-family:var(--mono);font-size:12.5px}
.spec-card .btn-text{margin-top:18px;font-size:14px;align-self:flex-start}
.net-note{
  margin-top:24px;display:flex;gap:12px;align-items:flex-start;
  background:var(--primary-soft);border-radius:var(--r-card);padding:18px 22px;
  font-size:14px;color:var(--primary-deep);border:1px solid #D6E4FF;
}
.net-note svg{width:20px;height:20px;flex:0 0 20px;color:var(--primary);margin-top:3px}

/* ---------- 底部 CTA ---------- */
.cta-band{
  background:var(--primary-soft);border:1px solid #D6E4FF;border-radius:var(--r-hero);
  padding:44px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(20px,2.2vw,28px);color:var(--primary-deep);line-height:1.4;margin-bottom:8px}
.cta-band p{color:#3E5B96;font-size:15px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.footer{background:var(--primary-night);color:#C7D3EC;margin-top:88px}
.footer-inner{max-width:1200px;margin:0 auto;padding:72px 32px 32px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .logo-mark{background:rgba(255,255,255,.12)}
.footer-brand span{display:flex;flex-direction:column;line-height:1.25}
.footer-brand b{color:#fff;font-size:15px}
.footer-brand i{font-style:normal;font-size:12px;color:#8FA5CC}
.footer p{font-size:13.5px;line-height:1.85;color:#9DB0D3;max-width:360px}
.footer h4{color:#fff;font-size:14px;margin-bottom:16px;font-weight:600}
.footer-grid > div > a{display:block;font-size:13.5px;color:#C7D3EC;padding:6px 0;transition:color .2s ease}
.footer-grid > div > a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#8FA5CC;
}

/* ---------- 入场动效 ---------- */
.js-ready .reveal{opacity:0;transform:translateY(12px)}
.js-ready .reveal.is-visible{opacity:1;transform:none;transition:opacity .4s ease,transform .4s ease}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .dock-nav a{padding:0 11px;font-size:13.5px}
}
@media (max-width:1024px){
  .container{padding:0 24px}
  .dock-nav{display:none}
  .hamburger{display:inline-flex}
  .page-hero{margin-top:-84px;padding:140px 0 56px}
  .section{padding:72px 0}
  .dl-board{grid-template-columns:1fr}
  .dl-verify{grid-column:1;grid-row:auto}
  .spec-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .step{gap:32px}
  .footer-inner{padding:64px 24px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:768px){
  .step{grid-template-columns:1fr;gap:20px}
  .step:nth-child(even) .step-media{order:0}
  .steps{gap:48px}
  .cta-band{padding:32px 26px}
  .dl-others{grid-template-columns:1fr}
  .hero-facts{gap:16px 28px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .site-dock{padding:12px 12px 6px}
  .dock-shell{height:58px;padding:0 10px 0 12px;gap:10px}
  .logo-text b{font-size:13.5px}
  .logo-text i{display:none}
  .dock-actions .btn-sm{display:none}
  .page-hero{margin-top:-78px;padding:122px 0 48px}
  .section{padding:56px 0}
  .hero-cta .btn{width:100%}
  .spec-grid{grid-template-columns:1fr}
  .dl-primary-card,.dl-verify{padding:20px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .footer{margin-top:64px}
}
@media (min-width:641px){
  .drawer,.drawer-mask{display:none}
}

/* roulang page: category2 */
:root{
  --primary:#1E5EFF;
  --primary-hover:#1748CC;
  --primary-deep:#14306B;
  --deep:#0E2350;
  --soft:#E8F0FF;
  --soft-2:#F5F8FF;
  --accent:#00C2A8;
  --accent-soft:#E6FAF7;
  --warm:#FF8A3D;
  --ink:#0B1220;
  --text:#3C4657;
  --muted:#69748A;
  --line:#E3EAF6;
  --card:#FFFFFF;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:12px;
  --shadow-card:0 8px 24px rgba(20,60,140,.08);
  --shadow-hover:0 16px 36px rgba(20,60,140,.14);
  --shadow-dock:0 10px 30px rgba(23,63,150,.10);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--soft-2);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease;}
a:hover{color:var(--primary-hover);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.container{max-width:1200px;margin:0 auto;padding:0 32px;}
.mono{font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;font-variant-numeric:tabular-nums;}

/* ---------- 浮动 Dock 导航 ---------- */
.dock-wrap{position:sticky;top:16px;z-index:80;padding:0 16px;}
.dock-nav{
  max-width:1120px;margin:0 auto;height:64px;
  display:flex;align-items:center;gap:16px;
  padding:0 12px 0 16px;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border:1px solid var(--line);
  border-radius:999px;
  box-shadow:var(--shadow-dock);
  transition:height .22s ease,box-shadow .22s ease,background-color .22s ease;
}
.dock-wrap.is-scrolled .dock-nav{height:58px;box-shadow:0 14px 34px rgba(23,63,150,.16);}
.dock-logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);}
.logo-mark{
  width:38px;height:38px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary);color:#fff;font-weight:700;font-size:15px;letter-spacing:.5px;
  box-shadow:0 6px 16px rgba(30,94,255,.28);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2;}
.logo-text b{font-size:15px;font-weight:700;color:var(--ink);white-space:nowrap;}
.logo-text i{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.4px;white-space:nowrap;}
.dock-links{display:flex;align-items:center;gap:4px;margin-left:12px;flex:1 1 auto;min-width:0;}
.dock-links a{
  padding:8px 14px;border-radius:999px;font-size:14px;color:var(--text);white-space:nowrap;
}
.dock-links a:hover{background:var(--soft);color:var(--primary-deep);}
.dock-links a.active{background:var(--soft);color:var(--primary);font-weight:600;}
.dock-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto;}
.burger{
  display:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
  align-items:center;justify-content:center;background:#fff;
}
.burger span{display:block;width:16px;height:2px;background:var(--ink);border-radius:2px;position:relative;}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink);border-radius:2px;}
.burger span::before{top:-5px;}
.burger span::after{top:5px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 24px rgba(30,94,255,.24);}
.btn-primary:hover{background:var(--primary-hover);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(30,94,255,.28);}
.btn-primary:active{transform:none;box-shadow:0 6px 16px rgba(30,94,255,.2);}
.btn-ghost{background:#fff;color:var(--primary);border:1px solid var(--primary);}
.btn-ghost:hover{background:var(--soft);color:var(--primary-hover);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-warm{background:var(--warm);color:#fff;box-shadow:0 10px 24px rgba(255,138,61,.26);}
.btn-warm:hover{background:#f2762a;color:#fff;transform:translateY(-2px);}
.text-link{font-size:14px;font-weight:600;border-bottom:1px solid transparent;padding-bottom:2px;}
.text-link:hover{border-bottom-color:var(--primary);color:var(--primary-hover);}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.hero-bg::after{content:"";position:absolute;inset:0;background:rgba(255,255,255,.86);}
.hero-bg::before{
  content:"";position:absolute;z-index:1;top:-180px;left:-140px;width:520px;height:520px;
  background:radial-gradient(circle,rgba(30,94,255,.20),rgba(30,94,255,0) 68%);
}
.hero-inner{position:relative;z-index:2;padding-top:56px;padding-bottom:56px;min-height:420px;display:flex;flex-direction:column;justify-content:center;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:20px;flex-wrap:wrap;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb span{color:#A8B2C4;}
.crumb-current{color:var(--primary-deep);font-weight:600;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--primary);
  background:var(--soft);border-radius:999px;padding:6px 14px;margin-bottom:18px;letter-spacing:.5px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);}
.hero h1{font-size:clamp(28px,4vw,46px);line-height:1.15;font-weight:700;color:var(--ink);max-width:760px;letter-spacing:-.5px;}
.hero-sub{margin-top:18px;font-size:17px;color:var(--text);max-width:640px;line-height:1.85;}
.hero-cta{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap;}
.hero-metrics{display:flex;gap:40px;margin-top:40px;flex-wrap:wrap;}
.hero-metrics li{display:flex;flex-direction:column;gap:2px;}
.hero-metrics b{font-size:22px;color:var(--primary-deep);font-weight:700;font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;}
.hero-metrics span{font-size:13px;color:var(--muted);}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section-tint{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head h2{font-size:clamp(22px,2.4vw,32px);line-height:1.3;color:var(--ink);font-weight:700;letter-spacing:-.3px;}
.section-desc{margin-top:14px;font-size:16px;color:var(--muted);}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.3px;
}
.tag-blue{background:var(--soft);color:var(--primary);}
.tag-accent{background:var(--accent-soft);color:var(--accent);}
.tag-neutral{background:#F1F4FA;color:var(--muted);}

/* ---------- 双栏对照 ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:start;}
.step-list{position:relative;padding-left:6px;}
.step{
  position:relative;padding:0 0 28px 62px;
}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:19px;top:38px;bottom:-6px;width:1px;
  background:linear-gradient(180deg,var(--line),rgba(227,234,246,0));
}
.step:last-child::before{display:none;}
.step-num{
  position:absolute;left:0;top:2px;width:38px;height:38px;border-radius:999px;
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-card);
  display:flex;align-items:center;justify-content:center;
  font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  font-size:14px;font-weight:700;color:var(--primary);
}
.step h3{font-size:19px;color:var(--ink);font-weight:700;line-height:1.5;}
.step p{margin-top:8px;font-size:15px;color:var(--text);}
.step-note{margin-top:10px;font-size:13px;color:var(--muted);}
.split-media{position:sticky;top:104px;}
.media-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.media-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--soft);}
.media-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.media-card figcaption{padding:14px 18px;font-size:13px;color:var(--muted);border-top:1px solid var(--line);background:var(--soft-2);}
.float-card{
  margin-top:20px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);padding:20px 22px;display:flex;flex-direction:column;gap:12px;
}
.float-row{display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:14px;color:var(--text);}
.float-row span{color:var(--muted);}
.float-row b{font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;color:var(--primary-deep);}
.status-dot{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--accent);font-weight:600;}
.status-dot::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(0,194,168,.14);}

/* ---------- 错位提示卡 ---------- */
.hint-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.hint-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 26px 24px;box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.hint-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--soft);}
.hint-card.wide{grid-column:span 2;}
.hint-icon{
  width:40px;height:40px;border-radius:12px;background:var(--soft);
  display:flex;align-items:center;justify-content:center;color:var(--primary);margin-bottom:16px;
}
.hint-card h3{font-size:18px;color:var(--ink);font-weight:700;line-height:1.5;}
.hint-card p{margin-top:10px;font-size:15px;color:var(--text);}
.hint-card.wide{display:grid;grid-template-columns:64px 1fr;gap:6px 18px;align-items:start;}
.hint-card.wide .hint-icon{grid-row:span 3;width:48px;height:48px;margin-bottom:0;}
.hint-card.wide h3,.hint-card.wide p,.hint-card.wide .tag{margin-top:0;}
.hint-card.wide .tag{margin-top:12px;justify-self:start;}

/* ---------- 安全提示条 ---------- */
.callout{
  display:flex;gap:20px;align-items:flex-start;
  background:var(--soft-2);border:1px solid var(--line);border-left:4px solid var(--accent);
  border-radius:var(--r-card);padding:26px 28px;box-shadow:var(--shadow-card);
}
.callout-icon{
  flex:0 0 auto;width:44px;height:44px;border-radius:12px;background:var(--accent-soft);
  display:flex;align-items:center;justify-content:center;color:var(--accent);
}
.callout h3{font-size:18px;color:var(--ink);font-weight:700;}
.callout p{margin-top:8px;font-size:15px;color:var(--text);}
.callout-list{margin-top:14px;display:flex;flex-wrap:wrap;gap:10px;}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-card);overflow:hidden;}
.faq details{border-bottom:1px solid var(--line);transition:background-color .2s ease;}
.faq details:last-child{border-bottom:0;}
.faq details[open]{background:var(--soft);}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 26px;font-size:16px;font-weight:600;color:var(--ink);
  cursor:pointer;list-style:none;min-height:62px;
}
.faq summary::-webkit-details-marker{display:none;}
.faq details[open] summary{color:var(--primary);}
.plus{position:relative;flex:0 0 auto;width:18px;height:18px;transition:transform .22s ease;}
.plus::before,.plus::after{content:"";position:absolute;background:currentColor;border-radius:2px;}
.plus::before{left:0;top:8px;width:18px;height:2px;}
.plus::after{left:8px;top:0;width:2px;height:18px;}
.faq details[open] .plus{transform:rotate(45deg);}
.faq-body{padding:0 26px 24px;font-size:15px;line-height:1.85;color:var(--text);}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:linear-gradient(120deg,var(--soft) 0%,#F7FAFF 100%);
  border:1px solid var(--line);border-radius:var(--r-lg);
  padding:44px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:var(--shadow-card);
}
.cta-band h2{font-size:clamp(20px,2.2vw,28px);color:var(--primary-deep);font-weight:700;line-height:1.4;}
.cta-band p{margin-top:10px;font-size:15px;color:var(--text);max-width:620px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.footer{background:var(--deep);color:rgba(255,255,255,.78);margin-top:88px;}
.footer-inner{max-width:1200px;margin:0 auto;padding:72px 32px 32px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand .logo-mark{background:rgba(255,255,255,.12);box-shadow:none;}
.footer-brand b{display:block;color:#fff;font-size:15px;font-weight:700;}
.footer-brand i{display:block;font-style:normal;font-size:12px;color:rgba(255,255,255,.55);}
.footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:360px;}
.footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;}
.footer-grid a{display:block;font-size:14px;color:rgba(255,255,255,.72);padding:5px 0;}
.footer-grid a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,18,32,.42);opacity:0;visibility:hidden;
  transition:opacity .24s ease,visibility .24s ease;z-index:90;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;background:#fff;z-index:95;
  transform:translateX(100%);transition:transform .28s ease;padding:22px;overflow-y:auto;
  box-shadow:-16px 0 40px rgba(20,60,140,.14);
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-head b{font-size:15px;color:var(--ink);}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);font-size:18px;color:var(--muted);}
.drawer a{display:flex;align-items:center;min-height:48px;font-size:15px;color:var(--text);border-bottom:1px solid var(--line);}
.drawer a.active{color:var(--primary);font-weight:600;}
.drawer .btn{margin-top:20px;width:100%;}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s ease,transform .4s ease;}
.reveal.in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .container{padding:0 24px;}
  .dock-links a{padding:8px 10px;font-size:13px;}
  .split{grid-template-columns:1fr;gap:40px;}
  .split-media{position:static;}
  .hint-grid{grid-template-columns:repeat(2,1fr);}
  .hint-card.wide{grid-column:span 2;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .section{padding:72px 0;}
}
@media (max-width:880px){
  .dock-links{display:none;}
  .burger{display:flex;}
  .dock-actions .btn-sm{display:none;}
  .dock-wrap{top:0;padding:0;}
  .dock-nav{border-radius:0 0 18px 18px;height:60px;padding:0 14px;}
  .dock-wrap.is-scrolled .dock-nav{height:56px;}
  .logo-text i{display:none;}
}
@media (max-width:760px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .hero-inner{padding-top:40px;padding-bottom:44px;min-height:0;}
  .hero-cta .btn{width:100%;}
  .hero-metrics{gap:26px;margin-top:32px;}
  .hint-grid{grid-template-columns:1fr;gap:16px;}
  .hint-card.wide{grid-column:span 1;grid-template-columns:1fr;gap:0;}
  .hint-card.wide .hint-icon{grid-row:auto;margin-bottom:16px;}
  .callout{flex-direction:column;gap:16px;padding:22px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px 24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .faq summary{padding:18px 18px;font-size:15px;}
  .faq-body{padding:0 18px 20px;}
  .step{padding-left:54px;}
  .step-num{width:34px;height:34px;font-size:13px;}
  .step::before{left:17px;}
  .footer-inner{padding:56px 16px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-grid > div:first-child{grid-column:span 2;}
  .footer p{max-width:none;}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-grid > div:first-child{grid-column:span 1;}
  .hero-metrics{gap:20px;}
  .hero-metrics b{font-size:19px;}
}

/* roulang page: category3 */
:root{
  --primary:#1E5EFF;
  --primary-hover:#1748CC;
  --primary-deep:#14306B;
  --navy:#0E2350;
  --primary-soft:#E8F0FF;
  --soft-2:#F5F8FF;
  --accent:#00C2A8;
  --accent-soft:#E6FAF7;
  --warm:#FF8A3D;
  --ink:#0B1220;
  --body:#3C4657;
  --muted:#69748A;
  --line:#E3EAF6;
  --white:#FFFFFF;
  --radius-card:16px;
  --radius-lg:20px;
  --radius-btn:12px;
  --radius-pill:999px;
  --shadow-card:0 8px 24px rgba(20,60,140,.08);
  --shadow-hover:0 16px 36px rgba(20,60,140,.14);
  --shadow-dock:0 10px 30px rgba(23,63,150,.10);
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--body);
  background:var(--soft-2);
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--primary-hover);}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
h1,h2,h3,h4{
  color:var(--ink);
  margin:0;
  line-height:1.35;
  font-weight:700;
  letter-spacing:-.01em;
}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

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

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--primary);
  color:#fff;
  box-shadow:0 6px 16px rgba(30,94,255,.24);
}
.btn-primary:hover{background:var(--primary-hover);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(30,94,255,.28);}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(30,94,255,.22);}
.btn-ghost{
  background:#fff;
  color:var(--primary);
  border:1px solid var(--primary);
}
.btn-ghost:hover{background:var(--primary-soft);color:var(--primary-hover);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:11px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{
  filter:grayscale(40%);
  opacity:.6;
  cursor:not-allowed;
  transform:none;
}

.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:600;
  text-decoration:underline;
  text-underline-offset:4px;
  text-decoration-thickness:1px;
}
.link-more:hover{text-decoration-thickness:2px;}

/* ============ 胶囊标签 ============ */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 12px;
  border-radius:var(--radius-pill);
  font-size:12px;
  font-weight:600;
  line-height:1;
  white-space:nowrap;
}
.tag-primary{background:var(--primary-soft);color:var(--primary);}
.tag-accent{background:var(--accent-soft);color:#00937F;}
.tag-neutral{background:#F0F3F9;color:var(--muted);}
.tag-warm{background:#FFF1E6;color:#D96A18;}

/* ============ 浮动 Dock 导航 ============ */
.site-dock{
  position:sticky;
  top:16px;
  z-index:80;
  padding:0 16px;
}
.dock-shell{
  max-width:1120px;
  margin:0 auto;
  height:64px;
  display:flex;
  align-items:center;
  gap:20px;
  padding:0 16px 0 18px;
  border-radius:var(--radius-pill);
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border:1px solid var(--line);
  box-shadow:var(--shadow-dock);
  transition:height .22s ease,box-shadow .22s ease;
}
.site-dock.is-scrolled .dock-shell{
  height:58px;
  box-shadow:0 14px 34px rgba(23,63,150,.16);
}
.dock-logo{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--ink);
}
.dock-logo:hover{color:var(--primary);}
.logo-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;
  height:36px;
  border-radius:11px;
  background:var(--primary);
  color:#fff;
  font-size:14px;
  font-weight:700;
  letter-spacing:.02em;
  flex:0 0 auto;
}
.logo-text{display:flex;flex-direction:column;line-height:1.2;}
.logo-text b{font-size:15px;font-weight:700;color:var(--ink);}
.logo-text i{font-size:11px;font-style:normal;color:var(--muted);}
.dock-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin:0 auto;
  overflow:hidden;
}
.dock-nav a{
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 14px;
  border-radius:var(--radius-pill);
  font-size:14px;
  font-weight:600;
  color:var(--body);
  white-space:nowrap;
  transition:background-color .2s ease,color .2s ease;
}
.dock-nav a:hover{background:var(--primary-soft);color:var(--primary);}
.dock-nav a.active{background:var(--primary-soft);color:var(--primary);}
.dock-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto;}
.dock-icon-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border-radius:var(--radius-pill);
  color:var(--muted);
  border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.dock-icon-btn:hover{background:var(--primary-soft);color:var(--primary);border-color:var(--line);}
.dock-toggle{display:none;}
.dock-drawer{
  display:none;
  max-width:1120px;
  margin:10px auto 0;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-hover);
  padding:8px;
}
.dock-drawer.is-open{display:block;}
.dock-drawer a{
  display:flex;
  align-items:center;
  height:48px;
  padding:0 14px;
  border-radius:12px;
  font-size:15px;
  font-weight:600;
  color:var(--body);
}
.dock-drawer a:hover,.dock-drawer a.active{background:var(--primary-soft);color:var(--primary);}

/* ============ 面包屑 ============ */
.crumb{
  padding:28px 0 0;
  font-size:13px;
  color:var(--muted);
}
.crumb ol{display:flex;flex-wrap:nowrap;align-items:center;gap:8px;}
.crumb li{display:flex;align-items:center;gap:8px;white-space:nowrap;}
.crumb li+li::before{content:"›";color:#B9C4D8;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--primary);}
.crumb .now{color:var(--body);font-weight:600;overflow:hidden;text-overflow:ellipsis;max-width:220px;}

/* ============ 页面头部（通栏头图） ============ */
.page-head{
  position:relative;
  margin-top:20px;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:#DCE6FA url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  box-shadow:var(--shadow-card);
}
.page-head::after{
  content:"";
  position:absolute;
  inset:0;
  background:rgba(255,255,255,.74);
}
.page-head-inner{
  position:relative;
  z-index:2;
  padding:56px 48px;
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(0,.85fr);
  gap:40px;
  align-items:center;
}
.page-head h1{
  font-size:clamp(26px,3.4vw,42px);
  line-height:1.2;
  margin-bottom:16px;
}
.page-head .lead{
  font-size:16px;
  color:var(--body);
  max-width:560px;
  margin-bottom:22px;
}
.head-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px;}
.head-cta{display:flex;flex-wrap:wrap;gap:12px;}
.head-side{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:22px;
}
.head-side h3{font-size:16px;margin-bottom:14px;}
.head-side dl{margin:0;display:grid;gap:10px;}
.head-side div{display:flex;justify-content:space-between;align-items:center;font-size:14px;gap:12px;}
.head-side dt{color:var(--muted);}
.head-side dd{
  margin:0;
  font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  font-size:13px;
  color:var(--ink);
  font-weight:600;
}

/* ============ 更新条 ============ */
.update-bar{
  margin-top:20px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  padding:14px 20px;
  border-radius:var(--radius-card);
  background:#fff;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  font-size:14px;
}
.dot-live{
  width:8px;height:8px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 4px rgba(0,194,168,.16);
  flex:0 0 auto;
}
.update-bar .sep{color:var(--line);}
.update-bar .num{font-family:ui-monospace,Menlo,Consolas,monospace;font-weight:700;color:var(--ink);}
.update-bar .push{margin-left:auto;}

/* ============ 板块通用 ============ */
.section{padding:72px 0;}
.section-tight{padding:56px 0;}
.section-head{margin-bottom:40px;max-width:760px;}
.section-head h2{font-size:clamp(22px,2.4vw,32px);margin-bottom:12px;}
.section-head p{color:var(--muted);font-size:15px;}

/* ============ 标签筛选 ============ */
.filter-bar{
  display:flex;
  gap:10px;
  overflow-x:auto;
  padding-bottom:6px;
  margin-bottom:32px;
  scrollbar-width:none;
}
.filter-bar::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;
  align-items:center;
  height:36px;
  padding:0 16px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:#fff;
  color:var(--body);
  font-size:14px;
  font-weight:600;
  white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.chip:hover{background:var(--primary-soft);color:var(--primary);border-color:var(--primary-soft);transform:translateY(-2px);}
.chip.active{background:var(--primary);color:#fff;border-color:var(--primary);}

/* ============ 交错长图版式 ============ */
.feature-row{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:56px;
  align-items:center;
  padding:44px 0;
  border-bottom:1px solid var(--line);
}
.feature-row:last-child{border-bottom:0;padding-bottom:0;}
.feature-row:first-child{padding-top:0;}
.feature-row.reverse .feature-media{order:2;}
.feature-row.reverse .feature-copy{order:1;}
.feature-media{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  background:var(--primary-soft);
  transition:box-shadow .25s ease,transform .25s ease;
}
.feature-media:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px);}
.feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.feature-media figcaption{
  padding:12px 16px;
  font-size:13px;
  color:var(--muted);
  background:#fff;
  border-top:1px solid var(--line);
}
.feature-index{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:34px;
  height:34px;
  padding:0 10px;
  border-radius:11px;
  background:var(--primary-soft);
  color:var(--primary);
  font-family:ui-monospace,Menlo,Consolas,monospace;
  font-size:14px;
  font-weight:700;
  margin-bottom:14px;
}
.feature-copy h2{
  font-size:clamp(20px,2.1vw,28px);
  margin-bottom:16px;
}
.feature-copy p{font-size:15.5px;margin-bottom:14px;}
.feature-points{
  margin-top:18px;
  display:grid;
  gap:10px;
}
.feature-points li{
  position:relative;
  padding-left:20px;
  font-size:14.5px;
  color:var(--body);
}
.feature-points li::before{
  content:"";
  position:absolute;
  left:0;
  top:.75em;
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--primary);
}
.feature-copy .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;}

/* ============ 热门功能榜 ============ */
.board-wrap{
  display:grid;
  grid-template-columns:minmax(0,1.45fr) minmax(0,1fr);
  gap:32px;
  align-items:start;
}
.board{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:8px 24px 16px;
}
.board-item{
  display:flex;
  align-items:center;
  gap:16px;
  padding:18px 0;
  border-bottom:1px solid var(--line);
}
.board-item:last-child{border-bottom:0;}
.board-no{
  width:30px;
  height:30px;
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  background:var(--primary-soft);
  color:var(--primary);
  font-family:ui-monospace,Menlo,Consolas,monospace;
  font-size:13px;
  font-weight:700;
}
.board-item:nth-child(-n+3) .board-no{background:var(--primary);color:#fff;}
.board-item:nth-child(-n+3) .board-no.is-top{background:var(--warm);color:#fff;}
.board-body{flex:1 1 auto;min-width:0;}
.board-body b{display:block;font-size:15.5px;color:var(--ink);font-weight:700;}
.board-body span{font-size:13.5px;color:var(--muted);}
.board-meta{
  flex:0 0 auto;
  font-family:ui-monospace,Menlo,Consolas,monospace;
  font-size:13px;
  color:var(--accent);
  font-weight:700;
}
.side-topic{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  margin-bottom:24px;
}
.side-topic img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.side-topic .side-body{padding:20px;}
.side-topic h4{font-size:15px;margin-bottom:8px;}
.side-topic p{font-size:13.5px;color:var(--muted);margin-bottom:14px;}
.side-note{
  background:var(--primary-soft);
  border:1px solid #D7E4FF;
  border-radius:var(--radius-card);
  padding:20px;
}
.side-note h4{font-size:15px;margin-bottom:10px;}
.side-note p{font-size:13.5px;color:var(--body);}

/* ============ 横向滚动专题 ============ */
.rail-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-bottom:24px;
}
.rail-arrows{display:flex;gap:8px;}
.rail-btn{
  width:40px;height:40px;
  border-radius:50%;
  border:1px solid var(--line);
  background:#fff;
  color:var(--primary);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition:background-color .2s ease,color .2s ease,transform .2s ease;
}
.rail-btn:hover{background:var(--primary);color:#fff;transform:translateY(-2px);}
.rail{
  display:flex;
  gap:20px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding-bottom:14px;
  scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none;}
.rail-card{
  flex:0 0 330px;
  scroll-snap-align:center;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease;
}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.rail-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.rail-card .rail-body{padding:18px 20px 22px;}
.rail-card h4{font-size:16px;margin:10px 0 8px;}
.rail-card p{font-size:14px;color:var(--muted);}

/* ============ FAQ ============ */
.faq-list{max-width:860px;}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:#D7E4FF;box-shadow:var(--shadow-card);background:#FBFCFF;}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 24px;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  min-height:62px;
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--primary);}
.faq-item[open] summary{color:var(--primary);}
.faq-plus{
  position:relative;
  width:20px;height:20px;flex:0 0 auto;
  transition:transform .25s ease;
}
.faq-plus::before,.faq-plus::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--primary);
  border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-plus::before{width:14px;height:2px;}
.faq-plus::after{width:2px;height:14px;}
.faq-item[open] .faq-plus{transform:rotate(45deg);}
.faq-answer{
  padding:0 24px 22px;
  border-top:1px solid var(--line);
  font-size:15px;
  line-height:1.85;
  color:var(--body);
  padding-top:16px;
}

/* ============ CTA ============ */
.cta-band{
  background:var(--primary-soft);
  border:1px solid #D7E4FF;
  border-radius:var(--radius-lg);
  padding:48px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.cta-band h2{font-size:clamp(20px,2.2vw,28px);margin-bottom:10px;}
.cta-band p{font-size:15px;color:var(--body);max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ============ 页脚 ============ */
.footer{
  background:var(--navy);
  color:rgba(255,255,255,.72);
  margin-top:72px;
}
.footer-inner{max-width:var(--container);margin:0 auto;padding:72px 32px 32px;}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:32px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .logo-mark{background:var(--primary);}
.footer-brand b{display:block;color:#fff;font-size:15px;}
.footer-brand i{font-style:normal;font-size:12px;color:rgba(255,255,255,.6);}
.footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);}
.footer h4{color:#fff;font-size:15px;margin-bottom:16px;}
.footer a{
  display:block;
  color:rgba(255,255,255,.72);
  font-size:14px;
  padding:6px 0;
  transition:color .2s ease,transform .2s ease;
}
.footer a:hover{color:var(--accent);transform:translateX(2px);}
.footer-bottom{
  margin-top:40px;
  padding-top:24px;
  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,.56);
}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .dock-nav a{padding:0 10px;font-size:13.5px;}
}
@media (max-width:1024px){
  .container{padding:0 24px;}
  .page-head-inner{grid-template-columns:1fr;padding:44px 32px;gap:28px;}
  .feature-row{grid-template-columns:1fr;gap:28px;padding:36px 0;}
  .feature-row.reverse .feature-media{order:0;}
  .feature-row.reverse .feature-copy{order:0;}
  .board-wrap{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .dock-nav a:nth-child(n+5){display:none;}
}
@media (max-width:768px){
  .section{padding:56px 0;}
  .section-tight{padding:44px 0;}
  .cta-band{padding:32px 24px;}
  .faq-item summary{padding:18px;font-size:15px;}
  .faq-answer{padding:14px 18px 20px;}
  .rail-card{flex:0 0 280px;}
}
@media (max-width:640px){
  .container{padding:0 16px;}
  .site-dock{padding:0 16px;top:10px;}
  .dock-shell{height:58px;padding:0 12px;gap:12px;}
  .dock-nav{display:none;}
  .dock-actions .btn{display:none;}
  .dock-toggle{display:inline-flex;}
  .page-head-inner{padding:32px 20px;}
  .head-cta .btn{width:100%;}
  .btn{width:100%;}
  .head-cta{flex-direction:column;}
  .cta-actions{width:100%;flex-direction:column;}
  .update-bar .push{margin-left:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px;}
  .footer-inner{padding:48px 16px 24px;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .crumb .now{max-width:150px;}
  .board{padding:4px 16px 12px;}
}

/* roulang page: category4 */
:root{
  --primary:#1E5EFF;
  --primary-hover:#1748CC;
  --primary-deep:#14306B;
  --ink:#0E2350;
  --primary-soft:#E8F0FF;
  --bg-soft:#F5F8FF;
  --accent:#00C2A8;
  --accent-soft:#E6FAF7;
  --warm:#FF8A3D;
  --title:#0B1220;
  --text:#3C4657;
  --muted:#69748A;
  --line:#E3EAF6;
  --white:#FFFFFF;
  --radius-card:16px;
  --radius-lg:20px;
  --radius-btn:12px;
  --radius-pill:999px;
  --shadow-card:0 8px 24px rgba(20,60,140,.08);
  --shadow-hover:0 16px 36px rgba(20,60,140,.14);
  --shadow-dock:0 10px 30px rgba(23,63,150,.10);
  --container:1200px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg-soft);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;}
a:hover{color:var(--primary-hover);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--title);line-height:1.25;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

.container{max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:88px 0;}
.section-soft{background:var(--bg-soft);}
.section-white{background:var(--white);}

/* ---------- 顶部浮动 Dock ---------- */
.site-head{
  position:sticky;
  top:16px;
  z-index:80;
  padding:0 16px;
  margin-top:16px;
}
.dock{
  max-width:1120px;
  margin:0 auto;
  height:64px;
  display:flex;
  align-items:center;
  gap:18px;
  padding:0 12px 0 18px;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  box-shadow:var(--shadow-dock);
  transition:height .22s ease,box-shadow .22s ease;
}
.site-head.scrolled .dock{height:58px;box-shadow:0 14px 34px rgba(23,63,150,.18);}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  border-radius:11px;
  background:var(--primary);
  color:#fff;
  font-family:var(--mono);
  font-size:15px;
  font-weight:700;
  letter-spacing:.5px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{font-size:15px;color:var(--title);font-weight:700;white-space:nowrap;}
.brand-text i{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.4px;}
.dock-nav{
  display:flex;
  align-items:center;
  gap:2px;
  margin:0 auto;
  flex-wrap:nowrap;
}
.dock-nav a{
  display:inline-block;
  padding:8px 13px;
  font-size:14px;
  color:var(--text);
  border-radius:var(--radius-pill);
  white-space:nowrap;
  transition:background .2s ease,color .2s ease;
}
.dock-nav a:hover{background:var(--primary-soft);color:var(--primary);}
.dock-nav a.active{background:var(--primary-soft);color:var(--primary);font-weight:600;}
.dock-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);
  background:var(--white);
  color:var(--muted);
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.icon-btn:hover{background:var(--primary-soft);color:var(--primary);border-color:var(--primary-soft);}
.menu-btn{display:none;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 18px rgba(30,94,255,.24);}
.btn-primary:hover{background:var(--primary-hover);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(30,94,255,.28);}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(30,94,255,.2);}
.btn-ghost{background:var(--white);border-color:var(--primary);color:var(--primary);}
.btn-ghost:hover{background:var(--primary-soft);color:var(--primary);transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:var(--radius-btn);}
.btn-warm{background:var(--warm);color:#fff;box-shadow:0 6px 18px rgba(255,138,61,.26);}
.btn-warm:hover{background:#F2762A;color:#fff;transform:translateY(-2px);}
.btn[disabled],.btn.is-disabled{background:#C9D2E0;color:#fff;box-shadow:none;cursor:not-allowed;transform:none;filter:grayscale(40%);}

/* ---------- 抽屉（移动端） ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,35,80,.42);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:90;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:290px;max-width:86vw;
  background:var(--white);z-index:100;
  box-shadow:-12px 0 34px rgba(20,60,140,.18);
  transform:translateX(102%);
  transition:transform .28s ease;
  padding:20px 18px 28px;
  display:flex;flex-direction:column;gap:6px;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.drawer-head b{font-size:15px;color:var(--title);}
.drawer a{
  display:flex;align-items:center;
  height:48px;padding:0 12px;
  border-radius:10px;
  font-size:15px;color:var(--text);
}
.drawer a:hover,.drawer a.active{background:var(--primary-soft);color:var(--primary);font-weight:600;}
.drawer .btn{margin-top:14px;width:100%;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  margin-top:24px;
  padding:72px 0 64px;
  background-color:var(--primary-soft);
  background-image:linear-gradient(rgba(255,255,255,.82),rgba(245,248,255,.92)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  top:-160px;left:-120px;
  width:520px;height:520px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(30,94,255,.20),rgba(30,94,255,0) 68%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:1;}
.crumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);
  margin-bottom:20px;flex-wrap:wrap;
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:#B9C4D6;}
.hero h1{
  font-size:clamp(28px,4vw,46px);
  font-weight:700;
  line-height:1.15;
  letter-spacing:-.5px;
  max-width:820px;
}
.hero-sub{
  margin-top:18px;
  font-size:17px;
  color:var(--text);
  max-width:640px;
  line-height:1.85;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;
  border-radius:var(--radius-pill);
  font-size:12px;
  background:var(--primary-soft);
  color:var(--primary);
}
.tag-safe{background:var(--accent-soft);color:#009C87;}
.tag-version{background:#EEF2F8;color:var(--muted);}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.hero-note{margin-top:18px;font-size:13px;color:var(--muted);}

/* ---------- 通用标题 ---------- */
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:2px;
  color:var(--primary);
  font-weight:700;
  margin-bottom:12px;
}
.sec-title{font-size:clamp(22px,2.4vw,32px);font-weight:700;letter-spacing:-.3px;}
.sec-desc{margin-top:14px;font-size:16px;color:var(--text);max-width:720px;}
.sec-head{margin-bottom:44px;}

/* ---------- 指标区 ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.metric-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:30px 24px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--primary-soft);}
.metric-num{
  font-family:var(--mono);
  font-size:clamp(26px,2.8vw,36px);
  font-weight:700;
  color:var(--accent);
  line-height:1.1;
  letter-spacing:-1px;
}
.metric-label{margin-top:12px;font-size:15px;color:var(--title);font-weight:600;}
.metric-note{margin-top:6px;font-size:13px;color:var(--muted);line-height:1.7;}

/* ---------- 特性卡 2×2 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.feature-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:32px 30px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--primary-soft);}
.feature-icon{
  width:44px;height:44px;
  border-radius:13px;
  background:var(--primary-soft);
  color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:18px;
}
.feature-card h3{font-size:19px;font-weight:700;margin-bottom:12px;}
.feature-card p{font-size:15px;line-height:1.85;color:var(--text);}
.feature-list{margin-top:16px;display:flex;flex-direction:column;gap:8px;}
.feature-list li{
  position:relative;
  padding-left:18px;
  font-size:14px;
  color:var(--muted);
}
.feature-list li::before{
  content:"";
  position:absolute;left:0;top:11px;
  width:7px;height:7px;border-radius:50%;
  background:var(--accent);
}

/* ---------- 横向时间线 ---------- */
.timeline{
  position:relative;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  padding-top:10px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:6px;right:6px;top:17px;
  height:1px;
  background:var(--line);
}
.tl-item{position:relative;padding-top:0;}
.tl-dot{
  position:relative;z-index:1;
  width:15px;height:15px;
  border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 5px var(--accent-soft);
  margin-bottom:22px;
}
.tl-step{
  font-family:var(--mono);
  font-size:12px;
  color:var(--primary);
  letter-spacing:1px;
  margin-bottom:8px;
}
.tl-item h3{font-size:17px;font-weight:700;margin-bottom:10px;}
.tl-item p{font-size:14px;line-height:1.8;color:var(--muted);}

/* ---------- 示意图 ---------- */
.figure-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.figure-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.figure-caption{
  padding:16px 22px;
  font-size:13px;
  color:var(--muted);
  text-align:center;
  border-top:1px solid var(--line);
  background:var(--white);
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:var(--primary-soft);box-shadow:var(--shadow-card);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:20px 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:17px;
  font-weight:600;
  color:var(--title);
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  font-size:24px;
  font-weight:400;
  line-height:1;
  color:var(--primary);
  transition:transform .22s ease;
  flex:0 0 auto;
}
.faq-item[open] summary{color:var(--primary);}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-body{
  padding:0 24px 24px;
  font-size:15px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg-soft);
  border-top:1px solid var(--line);
  padding-top:18px;
}
.faq-body p + p{margin-top:12px;}

/* ---------- CTA ---------- */
.cta-card{
  background:var(--primary-soft);
  border:1px solid #D6E3FF;
  border-radius:var(--radius-lg);
  padding:52px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
}
.cta-card h2{font-size:clamp(20px,2.2vw,28px);font-weight:700;}
.cta-card p{margin-top:10px;font-size:15px;color:var(--text);max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink);color:#C7D3E6;margin-top:0;}
.footer-inner{max-width:var(--container);margin:0 auto;padding:72px 32px 32px;}
.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:18px;}
.logo-mark{
  width:38px;height:38px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  border-radius:11px;
  background:var(--primary);
  color:#fff;
  font-family:var(--mono);
  font-size:14px;
  font-weight:700;
}
.footer-brand b{display:block;color:#fff;font-size:15px;}
.footer-brand i{font-style:normal;display:block;font-size:12px;color:#8FA3C2;}
.footer p{font-size:14px;line-height:1.85;color:#A9B8D1;max-width:340px;}
.footer h4{color:#fff;font-size:14px;margin-bottom:16px;letter-spacing:.4px;}
.footer a{
  display:block;
  font-size:14px;
  color:#A9B8D1;
  padding:5px 0;
  transition:color .2s ease;
}
.footer a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:#8FA3C2;
}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .dock-nav a{padding:8px 10px;font-size:13.5px;}
}
@media (max-width:1024px){
  .container{padding:0 24px;}
  .dock-nav{display:none;}
  .menu-btn{
    display:flex;align-items:center;justify-content:center;
    width:40px;height:40px;border-radius:50%;
    border:1px solid var(--line);background:#fff;color:var(--title);cursor:pointer;
  }
  .dock-actions .btn-primary{display:none;}
  .section{padding:72px 0;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .footer p{max-width:none;}
}
@media (max-width:820px){
  .timeline{grid-template-columns:repeat(2,1fr);gap:28px 24px;}
  .timeline::before{display:none;}
  .tl-dot{margin-bottom:16px;}
}
@media (max-width:768px){
  .hero{padding:52px 0 48px;}
  .hero-sub{font-size:16px;}
  .feature-grid{grid-template-columns:1fr;}
  .cta-card{padding:36px 26px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
}
@media (max-width:560px){
  .container{padding:0 16px;}
  .site-head{padding:0 12px;}
  .dock{padding:0 10px 0 12px;gap:10px;height:60px;}
  .brand-text i{display:none;}
  .brand-text b{font-size:13.5px;white-space:normal;line-height:1.2;}
  .section{padding:56px 0;}
  .sec-head{margin-bottom:32px;}
  .metrics{grid-template-columns:1fr;gap:16px;}
  .feature-grid{gap:16px;}
  .feature-card{padding:26px 22px;}
  .hero-actions{width:100%;}
  .hero-actions .btn{flex:1 1 100%;}
  .timeline{grid-template-columns:1fr;gap:26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-inner{padding:56px 16px 26px;}
  .footer-bottom{font-size:12.5px;}
  .faq-item summary{padding:18px 18px;font-size:15.5px;}
  .faq-body{padding-left:18px;padding-right:18px;}
}

/* roulang page: category5 */
:root{
  --primary:#1E5EFF;
  --primary-hover:#1748CC;
  --primary-deep:#14306B;
  --primary-dark:#0E2350;
  --primary-soft:#E8F0FF;
  --primary-tint:#F5F8FF;
  --accent:#00C2A8;
  --accent-soft:#E6FAF7;
  --warm:#FF8A3D;
  --ink:#0B1220;
  --text:#3C4657;
  --muted:#69748A;
  --line:#E3EAF6;
  --white:#FFFFFF;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:12px;
  --r-pill:999px;
  --shadow-card:0 8px 24px rgba(20,60,140,.08);
  --shadow-hover:0 16px 36px rgba(20,60,140,.14);
  --shadow-dock:0 10px 30px rgba(23,63,150,.10);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  overflow-x:hidden;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--primary-tint);
}
img{display:block;max-width:100%;height:auto}
a{color:var(--primary);text-decoration:none}
h1,h2,h3,h4{color:var(--ink);line-height:1.25;margin:0}
p{margin:0 0 16px}
ul{margin:0 0 16px;padding-left:20px}
button,input{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ============ 浮动 Dock 导航 ============ */
.site-head{position:sticky;top:0;z-index:70;padding-top:16px}
.head-inner{max-width:1184px;margin:0 auto;padding:0 16px}
.dock{
  display:flex;align-items:center;gap:14px;
  height:64px;padding:0 12px 0 16px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border:1px solid var(--line);
  box-shadow:var(--shadow-dock);
  transition:height .22s ease,box-shadow .22s ease;
}
.dock.shrink{height:58px;box-shadow:0 14px 34px rgba(23,63,150,.16)}
.brand{display:flex;align-items:center;gap:10px;flex:none;color:var(--primary-deep)}
.logo-mark{
  width:36px;height:36px;flex:none;border-radius:10px;background:var(--primary);color:#fff;
  display:grid;place-items:center;font-size:13px;font-weight:700;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.5px;
}
.brand-text b{display:block;font-size:15px;color:var(--ink);line-height:1.25;white-space:nowrap}
.brand-text i{display:block;font-style:normal;font-size:11px;color:var(--muted);line-height:1.4;white-space:nowrap}
.dock-nav{flex:1;display:flex;align-items:center;justify-content:center;gap:2px}
.dock-nav a{
  padding:8px 14px;border-radius:var(--r-pill);font-size:14px;color:var(--text);
  white-space:nowrap;transition:background .2s ease,color .2s ease;
}
.dock-nav a:hover{background:var(--primary-soft);color:var(--primary-deep)}
.dock-nav a.active{background:var(--primary-soft);color:var(--primary);font-weight:600}
.dock-actions{display:flex;align-items:center;gap:8px;flex:none}
.icon-btn{
  width:38px;height:38px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:#fff;color:var(--primary-deep);display:grid;place-items:center;cursor:pointer;
  transition:background .2s ease,border-color .2s ease,color .2s ease;
}
.icon-btn:hover{background:var(--primary-soft);border-color:var(--primary-soft);color:var(--primary)}
.dock-toggle{
  display:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
  background:#fff;cursor:pointer;padding:0;place-items:center;
}
.dock-toggle span{display:block;width:18px;height:2px;background:var(--primary-deep);border-radius:2px;margin:3px auto}
.nav-mask{position:fixed;inset:0;background:rgba(11,18,32,.4);opacity:0;visibility:hidden;transition:opacity .25s ease;z-index:75}
.nav-mask.show{opacity:1;visibility:visible}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:transform .2s ease,background .2s ease,box-shadow .2s ease,border-color .2s ease,color .2s ease;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(30,94,255,.22)}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--primary)}
.btn-ghost:hover{background:var(--primary-soft)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-lg{height:60px;padding:0 30px;font-size:16px}
.link-btn{
  display:inline-block;color:var(--primary);font-weight:600;font-size:14px;
  text-underline-offset:4px;transition:color .2s ease;
}
.link-btn:hover{color:var(--primary-hover);text-decoration:underline}
.tag{
  display:inline-flex;align-items:center;height:25px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;background:var(--primary-soft);color:var(--primary);
}
.tag-accent{background:var(--accent-soft);color:var(--accent)}
.tag-neutral{background:#F1F4FA;color:var(--muted)}

/* ============ Hero ============ */
.hero{
  position:relative;padding:56px 0 88px;overflow:hidden;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
}
.hero::before{content:"";position:absolute;inset:0;background:rgba(255,255,255,.78)}
.hero::after{
  content:"";position:absolute;left:-12%;top:-40%;width:640px;height:640px;border-radius:50%;
  background:radial-gradient(circle,rgba(30,94,255,.20),rgba(30,94,255,0) 62%);pointer-events:none;
}
.hero-inner{position:relative;z-index:2}
.crumb{font-size:13px;color:var(--muted);display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:18px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--primary)}
.crumb span{white-space:nowrap}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(28px,4vw,46px);font-weight:700;line-height:1.15;color:var(--ink)}
.hero .lead{font-size:16px;line-height:1.85;max-width:560px;margin:16px 0 24px;color:var(--text)}
.search{
  display:flex;gap:10px;align-items:center;max-width:540px;background:#fff;
  border:1px solid var(--line);border-radius:14px;padding:8px 8px 8px 16px;
  box-shadow:var(--shadow-card);transition:border-color .2s ease,box-shadow .2s ease;
}
.search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}
.search input{flex:1;min-width:0;height:44px;border:0;background:transparent;color:var(--ink);outline:none}
.search input::placeholder{color:#9AA4B8}
.quick-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.quick-tags a{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);font-size:13px;color:var(--text);
  transition:background .2s ease,border-color .2s ease,color .2s ease,transform .2s ease;
}
.quick-tags a:hover{background:var(--primary-soft);border-color:var(--primary-soft);color:var(--primary);transform:translateY(-2px)}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-lg);
  box-shadow:var(--shadow-hover);transform:rotate(-1.5deg);
}
.float-card{
  position:absolute;left:-16px;bottom:-24px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--shadow-card);padding:14px 18px;
}
.float-card b{display:block;font-size:14px;color:var(--ink)}
.float-card span{display:block;font-size:12px;color:var(--muted);font-family:ui-monospace,Menlo,monospace}

/* ============ 更新条 ============ */
.update-bar{
  position:relative;z-index:3;margin-top:-30px;
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 28px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);padding:16px 22px;
}
.update-bar .dot{
  width:8px;height:8px;border-radius:50%;background:var(--accent);flex:none;
  box-shadow:0 0 0 4px var(--accent-soft);
}
.update-bar strong{color:var(--ink);font-size:14px}
.update-bar em{font-style:normal;font-size:13px;color:var(--muted);font-family:ui-monospace,Menlo,monospace}
.update-bar .sep{width:1px;height:18px;background:var(--line)}

/* ============ 主体布局 ============ */
.layout{display:grid;grid-template-columns:264px minmax(0,1fr);gap:40px;padding:56px 0 24px;align-items:start}
.toc{
  position:sticky;top:96px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:20px;box-shadow:var(--shadow-card);
}
.toc h2{font-size:13px;letter-spacing:.06em;color:var(--muted);font-weight:600;margin-bottom:12px}
.toc-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}
.toc-list a{
  display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;
  font-size:14px;color:var(--text);transition:background .2s ease,color .2s ease;
}
.toc-list a:hover{background:var(--primary-soft);color:var(--primary-deep)}
.toc-list a.active{background:var(--primary-soft);color:var(--primary);font-weight:600}
.toc-list a i{
  font-style:normal;width:20px;height:20px;border-radius:6px;background:var(--primary-tint);
  color:var(--primary);font-size:11px;display:grid;place-items:center;flex:none;font-weight:700;
}
.toc-foot{margin-top:18px;padding-top:18px;border-top:1px solid var(--line)}
.toc-foot p{font-size:13px;color:var(--muted);margin:0 0 12px}
.toc-foot .btn{width:100%}

/* ============ FAQ 手风琴 ============ */
.faq-group{margin-bottom:48px;scroll-margin-top:112px}
.group-head{margin-bottom:18px}
.group-head h2{font-size:clamp(20px,2.2vw,26px);font-weight:700}
.group-head p{font-size:14px;color:var(--muted);margin:8px 0 0}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);margin-bottom:12px;overflow:hidden;
  transition:background .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:var(--primary-soft);box-shadow:var(--shadow-hover)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:16px;min-height:62px;padding:16px 22px;font-size:16px;font-weight:600;color:var(--ink);
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:none;width:24px;text-align:center;font-size:20px;font-weight:400;
  color:var(--primary);transition:transform .25s ease;
}
.faq-item[open]{background:var(--primary-tint);border-color:var(--primary-soft)}
.faq-item[open] summary{color:var(--primary)}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--text);border-top:1px solid var(--line);margin-top:-1px;padding-top:16px}
.faq-body ul{padding-left:20px;margin:0 0 12px}
.faq-body li{margin-bottom:6px}
.faq-body p:last-child{margin-bottom:0}
.faq-body strong{color:var(--ink)}

/* ============ 横向滚动轨道 ============ */
.rail-section{padding:24px 0 8px}
.rail-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:20px}
.rail-head h2{font-size:clamp(20px,2.2vw,26px);font-weight:700}
.rail-head p{font-size:14px;color:var(--muted);margin:8px 0 0}
.rail{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 18px;scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none}
.rail-card{
  flex:0 0 300px;scroll-snap-align:center;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--shadow-card);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--primary-soft)}
.rail-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--primary-soft)}
.rail-body{padding:16px 18px 20px}
.rail-body h3{font-size:17px;font-weight:600;margin:10px 0 8px}
.rail-body p{font-size:14px;color:var(--muted);line-height:1.75;margin:0 0 12px}

/* ============ CTA ============ */
.cta-band{
  margin:64px 0 8px;background:var(--primary-soft);border:1px solid #D8E6FF;
  border-radius:var(--r-lg);padding:44px;display:flex;align-items:center;
  justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(20px,2.4vw,30px);font-weight:700}
.cta-band p{margin:10px 0 0;font-size:15px;color:var(--text);max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.footer{background:var(--primary-dark);color:#fff;margin-top:80px;padding:72px 0 32px}
.footer-inner{max-width:1200px;margin:0 auto;padding:0 32px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.footer-grid h4{font-size:15px;color:#fff;margin-bottom:14px}
.footer-grid a{display:block;color:rgba(255,255,255,.72);font-size:14px;padding:5px 0;transition:color .2s ease}
.footer-grid a:hover{color:var(--accent)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .logo-mark{width:38px;height:38px}
.footer-brand b{display:block;font-size:16px;color:#fff;line-height:1.3}
.footer-brand i{display:block;font-style:normal;font-size:12px;color:rgba(255,255,255,.6)}
.footer p{font-size:14px;color:rgba(255,255,255,.68);max-width:340px;margin:0}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);margin-top:48px;padding-top:24px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .dock-nav a{padding:8px 10px;font-size:13px}
  .brand-text i{display:none}
}
@media (max-width:1000px){
  .dock-actions .btn-sm{display:none}
  .dock-toggle{display:grid}
  .dock-nav{
    position:fixed;top:0;right:0;height:100vh;width:min(290px,82vw);
    background:#fff;flex-direction:column;align-items:stretch;justify-content:flex-start;
    padding:88px 20px 24px;gap:4px;transform:translateX(105%);
    transition:transform .28s ease;box-shadow:-16px 0 40px rgba(20,60,140,.14);z-index:80;
  }
  .dock-nav.open{transform:translateX(0)}
  .dock-nav a{display:flex;align-items:center;height:48px;padding:0 16px;border-radius:12px;font-size:15px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual img{transform:none}
  .float-card{left:auto;right:12px;bottom:-18px}
  .layout{grid-template-columns:1fr;gap:28px;padding-top:40px}
  .toc{position:static;padding:16px;top:auto}
  .toc-list{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:8px;scrollbar-width:none}
  .toc-list::-webkit-scrollbar{display:none}
  .toc-list a{white-space:nowrap;background:var(--primary-tint)}
  .toc-foot{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .head-inner{padding:0 12px}
  .dock{height:58px;padding:0 10px 0 12px;gap:10px}
  .brand-text b{font-size:14px}
  .logo-mark{width:32px;height:32px;font-size:12px}
  .hero{padding:40px 0 72px}
  .btn{width:100%}
  .btn-sm{width:auto}
  .search{flex-direction:column;align-items:stretch;padding:12px;gap:12px}
  .search .btn{height:46px}
  .cta-band{padding:28px 20px}
  .cta-actions{width:100%}
  .footer{padding:56px 0 28px}
  .footer-inner{padding:0 16px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
  .footer-brand{grid-column:1 / -1}
  .update-bar{padding:14px 16px;gap:10px 18px}
  .update-bar .sep{display:none}
  .faq-item summary{padding:14px 16px;font-size:15px}
  .faq-body{padding-left:16px;padding-right:16px}
  .rail-card{flex:0 0 82%}
}
@media (max-width:400px){
  .footer-grid{grid-template-columns:1fr}
}