/* roulang page: index */
:root{
  --bg-0:#060A16;
  --bg-1:#0A1122;
  --bg-2:#0E1730;
  --surface:rgba(255,255,255,.045);
  --surface-2:rgba(255,255,255,.075);
  --stroke:rgba(120,190,255,.16);
  --stroke-strong:rgba(120,190,255,.34);
  --brand:#38CFFF;
  --brand-deep:#5B6BFF;
  --accent:#FF4D8D;
  --ok:#3EE6A8;
  --text:#E8EFFF;
  --muted:#9AACCB;
  --dim:#68799B;
  --radius-card:18px;
  --radius-sm:12px;
  --radius-pill:999px;
  --container:1240px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Consolas,monospace;
  --glow-brand:0 10px 30px -10px rgba(56,207,255,.55);
  --glow-accent:0 10px 30px -10px rgba(255,77,141,.5);
  --ease:.22s cubic-bezier(.4,.2,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding-bottom:96px;
  background:var(--bg-0);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(680px 520px at 8% -6%,rgba(56,207,255,.16),transparent 62%),
    radial-gradient(720px 560px at 96% 108%,rgba(255,77,141,.14),transparent 64%),
    linear-gradient(180deg,#060A16 0%,#080E1E 45%,#060A16 100%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.35;
  background-image:linear-gradient(rgba(120,190,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(120,190,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 20%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 20%,#000 0%,transparent 78%);
}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(28px,4.2vw,52px);line-height:1.15}
h2{font-size:clamp(22px,2.4vw,34px);line-height:1.3}
h3{font-size:19px;font-weight:500;line-height:1.5}
p{margin:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input{font:inherit;color:inherit}
button{border:0;background:none;cursor:pointer}
ul{margin:0;padding:0;list-style:none}
::selection{background:rgba(56,207,255,.32);color:#fff}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;position:relative;z-index:1}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

/* ---------- 双层导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(6,10,22,.86);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--stroke);
}
.nav-top{display:flex;align-items:center;gap:22px;height:64px}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  letter-spacing:.01em;
  white-space:nowrap;
  flex:0 0 auto;
}
.logo-mark{
  width:30px;height:30px;border-radius:10px;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  display:grid;place-items:center;
  font-size:13px;font-weight:700;color:#04121E;
  box-shadow:0 8px 22px -12px rgba(56,207,255,.9);
}
.logo-text{background:linear-gradient(100deg,#EAF6FF 10%,var(--brand) 90%);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-search{
  flex:1 1 auto;
  max-width:400px;
  display:flex;
  align-items:center;
  gap:10px;
  height:40px;
  padding:0 14px;
  border:1px solid var(--stroke);
  border-radius:var(--radius-pill);
  background:var(--surface);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.nav-search:focus-within{border-color:rgba(56,207,255,.6);box-shadow:0 0 0 4px rgba(56,207,255,.12)}
.nav-search svg{flex:0 0 auto;opacity:.7}
.nav-search input{
  flex:1 1 auto;
  min-width:0;
  height:100%;
  border:0;
  background:transparent;
  font-size:14px;
  outline:none;
  appearance:none;
}
.nav-search input::placeholder{color:var(--dim)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:500;
  white-space:nowrap;
  transition:transform var(--ease),filter var(--ease),background var(--ease),border-color var(--ease),color var(--ease),box-shadow var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#04121E;
  font-weight:700;
  box-shadow:var(--glow-brand);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  border:1px solid var(--stroke-strong);
  color:var(--text);
  background:transparent;
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:rgba(56,207,255,.06)}
.btn-glass{
  border:1px solid var(--stroke);
  background:var(--surface);
  color:var(--text);
}
.btn-glass:hover{border-color:var(--stroke-strong);background:var(--surface-2);transform:translateY(-1px)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn:disabled{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none}
.nav-channels-wrap{position:relative;border-top:1px solid rgba(120,190,255,.08)}
.nav-channels-wrap::before,
.nav-channels-wrap::after{
  content:"";position:absolute;top:0;bottom:0;width:48px;pointer-events:none;z-index:2;
}
.nav-channels-wrap::before{left:0;background:linear-gradient(90deg,rgba(6,10,22,.96),transparent)}
.nav-channels-wrap::after{right:0;background:linear-gradient(270deg,rgba(6,10,22,.96),transparent)}
.nav-channels{
  display:flex;
  align-items:center;
  gap:6px;
  height:48px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.nav-channels::-webkit-scrollbar{display:none}
.channel{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  height:32px;
  padding:0 16px;
  border-radius:var(--radius-pill);
  font-size:14px;
  color:var(--muted);
  border:1px solid transparent;
  transition:color var(--ease),border-color var(--ease),background var(--ease),box-shadow var(--ease);
}
.channel:hover{color:var(--text)}
.channel.is-active{
  color:#EAF8FF;
  border-color:rgba(56,207,255,.55);
  background:rgba(56,207,255,.1);
  box-shadow:inset 0 0 18px rgba(56,207,255,.16);
}

/* ---------- 通用块 ---------- */
main{position:relative;z-index:1}
.section{padding:96px 0;scroll-margin-top:128px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head p{color:var(--muted);font-size:15px;margin-top:10px;max-width:640px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--brand);
  letter-spacing:.08em;
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--brand),transparent)}
.glass{
  background:var(--surface);
  border:1px solid var(--stroke);
  border-radius:var(--radius-card);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.pill{
  display:inline-flex;align-items:center;
  height:26px;padding:0 12px;
  border-radius:var(--radius-pill);
  font-size:12px;
  color:var(--brand);
  background:rgba(56,207,255,.12);
  border:1px solid rgba(56,207,255,.22);
}
.pill-accent{color:var(--accent);background:rgba(255,77,141,.12);border-color:rgba(255,77,141,.24)}
.pill-ok{color:var(--ok);background:rgba(62,230,168,.12);border-color:rgba(62,230,168,.24)}
.pager{display:flex;align-items:center;gap:8px;margin-top:36px}
.pager span,.pager a{
  min-width:38px;height:38px;padding:0 12px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;border:1px solid var(--stroke);
  font-size:14px;color:var(--muted);background:var(--surface);
}
.pager .is-current{color:#04121E;background:linear-gradient(135deg,var(--brand),var(--brand-deep));border-color:transparent;font-weight:700}
.empty-state{
  text-align:center;
  padding:56px 28px;
}
.empty-state .icon{
  width:48px;height:48px;margin:0 auto 16px;
  border-radius:14px;
  display:grid;place-items:center;
  border:1px solid var(--stroke);
  background:var(--surface);
  color:var(--brand);
  font-size:20px;
}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:20px}

/* ---------- Hero ---------- */
.hero{padding:72px 0 88px;scroll-margin-top:128px;position:relative;overflow:hidden}
.hero-bg{
  position:absolute;inset:0;z-index:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center right;
  opacity:.28;
  mask-image:linear-gradient(90deg,transparent 0%,#000 55%,#000 100%);
  -webkit-mask-image:linear-gradient(90deg,transparent 0%,#000 55%,#000 100%);
}
.hero-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  align-items:center;
}
.hero h1{margin-bottom:20px}
.hero h1 em{font-style:normal;background:linear-gradient(100deg,var(--brand),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{color:var(--muted);font-size:17px;max-width:560px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.trust-row{display:flex;flex-wrap:wrap;gap:22px;border-top:1px solid var(--stroke);padding-top:22px}
.trust-row li{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--muted)}
.trust-row li::before{content:"";width:6px;height:6px;border-radius:99px;background:var(--brand);box-shadow:0 0 12px rgba(56,207,255,.9)}
.hero-panel{
  padding:18px;
  position:relative;
}
.hero-panel::after{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  border:1px solid transparent;
  background:linear-gradient(150deg,rgba(56,207,255,.5),rgba(255,77,141,.35) 55%,transparent 90%) border-box;
  -webkit-mask:linear-gradient(#000 0 0) padding-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
}
.hero-shot{
  width:100%;aspect-ratio:16/9;height:auto;
  object-fit:cover;
  border-radius:var(--radius-sm);
  border:1px solid var(--stroke);
}
.hero-panel-meta{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:16px 6px 4px}
.hero-panel-meta strong{font-size:15px;font-weight:500}
.hero-panel-meta span{font-size:13px;color:var(--dim)}
.hero-panel-list{display:grid;gap:10px;padding:0 6px 8px}
.hero-panel-list li{
  display:flex;align-items:center;justify-content:space-between;
  font-size:14px;color:var(--muted);
  padding:11px 14px;
  border-radius:12px;
  background:rgba(255,255,255,.03);
  border:1px solid rgba(120,190,255,.1);
}
.hero-panel-list li b{font-weight:500;color:var(--text)}
.hero-panel-list li em{font-style:normal;font-family:var(--font-mono);font-size:13px;color:var(--ok)}

/* ---------- 卖点：编号轴 + 交错双列 ---------- */
.axis-list{position:relative;padding-left:6px}
.axis-list::before{
  content:"";position:absolute;left:43px;top:12px;bottom:12px;width:1px;
  background:linear-gradient(180deg,transparent,rgba(56,207,255,.55) 12%,rgba(255,77,141,.4) 88%,transparent);
}
.axis-item{display:grid;grid-template-columns:88px 1fr;position:relative;padding-bottom:26px}
.axis-item:last-child{padding-bottom:0}
.axis-num{
  font-family:var(--font-mono);
  font-size:15px;
  color:var(--brand);
  padding-top:24px;
  position:relative;
  z-index:1;
}
.axis-num::after{
  content:"";position:absolute;left:38px;top:32px;
  width:11px;height:11px;border-radius:99px;
  background:var(--bg-0);
  border:2px solid var(--brand);
  box-shadow:0 0 14px rgba(56,207,255,.6);
}
.axis-card{
  padding:26px 28px;
  transition:transform var(--ease),border-color var(--ease),background var(--ease);
}
.axis-item:nth-child(2n) .axis-card{margin-left:40px}
.axis-card:hover{transform:translateY(-2px);border-color:rgba(56,207,255,.34);background:var(--surface-2)}
.axis-card-head{display:flex;align-items:center;gap:12px;margin-bottom:10px}
.axis-icon{
  width:34px;height:34px;border-radius:11px;
  display:grid;place-items:center;
  background:rgba(56,207,255,.1);
  border:1px solid rgba(56,207,255,.24);
  color:var(--brand);
  font-size:15px;
  flex:0 0 auto;
}
.axis-card p{color:var(--muted);font-size:15px}

/* ---------- 演示区 ---------- */
.demo-track{
  display:flex;
  gap:24px;
  overflow-x:auto;
  padding-bottom:14px;
  scrollbar-width:none;
  -ms-overflow-style:none;
  scroll-snap-type:x mandatory;
}
.demo-track::-webkit-scrollbar{display:none}
.demo-card{
  flex:0 0 calc((100% - 48px)/3);
  scroll-snap-align:start;
  padding:14px;
  transition:transform var(--ease),border-color var(--ease);
}
.demo-card:hover{transform:translateY(-3px);border-color:rgba(56,207,255,.3)}
.demo-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-sm);border:1px solid var(--stroke)}
.demo-card figcaption{font-size:13px;color:var(--dim);padding:13px 4px 4px;text-align:center}
.demo-card h3{padding:6px 4px 0;font-size:16px}

/* ---------- 证据区 ---------- */
.data-bar{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--stroke);
  border:1px solid var(--stroke);
  border-radius:var(--radius-card);
  overflow:hidden;
  margin-bottom:40px;
}
.data-bar div{
  background:rgba(10,17,34,.86);
  padding:28px 22px;
  text-align:center;
}
.data-num{
  display:block;
  font-family:var(--font-mono);
  font-size:clamp(26px,3vw,38px);
  font-weight:700;
  color:#EAF8FF;
  text-shadow:0 0 22px rgba(56,207,255,.55);
  line-height:1.2;
}
.data-label{display:block;font-size:13px;color:var(--muted);margin-top:8px}
.voice-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.voice-card{padding:28px 30px}
.voice-card h3{margin-bottom:16px;font-size:17px;font-weight:500}
.voice-card blockquote{
  margin:0 0 14px;
  padding-left:14px;
  border-left:3px solid rgba(56,207,255,.5);
  color:var(--muted);
  font-size:15px;
}
.voice-foot{display:flex;align-items:center;gap:12px;margin-top:20px;padding-top:18px;border-top:1px solid var(--stroke)}
.voice-foot strong{font-size:14px;font-weight:500}
.avatar{
  width:34px;height:34px;border-radius:99px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(56,207,255,.28),rgba(255,77,141,.28));
  border:1px solid var(--stroke);
  font-size:13px;color:#EAF8FF;
}

/* ---------- 价格区 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{
  padding:32px 30px;
  display:flex;flex-direction:column;
  position:relative;
  transition:transform var(--ease),border-color var(--ease);
}
.price-card:hover{transform:translateY(-3px);border-color:var(--stroke-strong)}
.price-card.is-featured{
  border-color:rgba(56,207,255,.55);
  box-shadow:0 0 0 1px rgba(56,207,255,.25),0 24px 60px -34px rgba(56,207,255,.7);
  background:linear-gradient(180deg,rgba(56,207,255,.09),rgba(255,255,255,.03));
}
.price-flag{
  position:absolute;top:-13px;left:30px;
  height:26px;padding:0 14px;
  display:inline-flex;align-items:center;
  border-radius:var(--radius-pill);
  font-size:12px;font-weight:700;color:#04121E;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
}
.price-name{font-size:16px;color:var(--muted);font-weight:500}
.price-value{
  display:flex;align-items:baseline;gap:6px;
  margin:14px 0 6px;
  font-family:var(--font-mono);
}
.price-value b{font-size:40px;font-weight:700;line-height:1}
.price-value span{font-size:14px;color:var(--dim)}
.price-desc{font-size:14px;color:var(--muted);margin-bottom:22px}
.price-list{display:grid;gap:12px;margin:0 0 26px;flex:1}
.price-list li{display:flex;gap:10px;font-size:15px;color:var(--muted)}
.price-list li::before{content:"✓";color:var(--brand);font-size:13px;line-height:1.9}
.price-terms{font-size:12px;color:var(--dim);margin-top:16px;text-align:center}

/* ---------- CMS 列表 ---------- */
.cms-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cms-card{
  display:flex;flex-direction:column;
  overflow:hidden;
  transition:transform var(--ease),border-color var(--ease),background var(--ease);
}
.cms-card:hover{transform:translateY(-2px);border-color:rgba(56,207,255,.24);background:var(--surface-2)}
.cms-card:hover h3{color:#EAF8FF}
.cms-thumb{width:100%;aspect-ratio:16/9;object-fit:cover;border-bottom:1px solid var(--stroke)}
.cms-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.cms-body h3{
  font-size:17px;
  font-weight:500;
  color:var(--text);
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  transition:color var(--ease);
}
.cms-body p{
  color:var(--muted);
  font-size:14px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:18px;
}
.cms-meta{display:flex;align-items:center;gap:12px;margin-top:auto;font-size:13px;color:var(--dim)}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--brand);transition:gap var(--ease)}
.link-more:hover{gap:10px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:920px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--stroke)}
.faq-item:first-child{border-top:1px solid var(--stroke)}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;justify-content:space-between;gap:18px;
  padding:22px 4px;
  font-size:16px;
  font-weight:500;
  transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-item summary::after{
  content:"+";
  flex:0 0 auto;
  width:26px;height:26px;
  display:grid;place-items:center;
  border-radius:99px;
  border:1px solid var(--stroke);
  color:var(--brand);
  font-size:15px;
  transition:transform var(--ease),background var(--ease);
}
.faq-item[open] summary{color:var(--brand)}
.faq-item[open] summary::after{transform:rotate(45deg);background:rgba(56,207,255,.12)}
.faq-answer{padding:0 4px 24px;color:var(--muted);font-size:15px;max-width:780px}

/* ---------- 收尾 CTA ---------- */
.final-cta{padding:96px 0 120px}
.cta-panel{
  padding:64px 40px;
  text-align:center;
  background:
    radial-gradient(520px 220px at 50% 0%,rgba(56,207,255,.14),transparent 70%),
    var(--surface);
}
.cta-panel h2{margin-bottom:14px}
.cta-panel p{color:var(--muted);max-width:620px;margin:0 auto 30px;font-size:16px}
.cta-panel .btn{min-width:200px}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;z-index:1;
  border-top:1px solid var(--stroke);
  background:rgba(8,14,30,.72);
  padding:64px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{color:var(--muted);font-size:14px;max-width:320px}
.footer-col h4{font-size:14px;font-weight:500;color:var(--text);margin-bottom:16px;letter-spacing:.04em}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:14px;color:var(--muted);transition:color var(--ease)}
.footer-col a:hover{color:var(--brand)}
.footer-col p{font-size:14px;color:var(--muted)}
.footer-bottom{
  margin-top:44px;padding-top:22px;
  border-top:1px solid var(--stroke);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;color:var(--dim);flex-wrap:wrap;
}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;
  right:24px;bottom:24px;
  z-index:900;
  display:flex;align-items:center;gap:16px;
  padding:10px 12px 10px 20px;
  border-radius:var(--radius-pill);
  background:rgba(10,17,34,.92);
  border:1px solid var(--stroke);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:0 18px 46px -24px rgba(0,0,0,.9);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta span{font-size:14px;color:var(--muted)}
.float-cta .btn{height:40px;padding:0 18px;font-size:14px}

/* ---------- 响应式 ---------- */
@media (max-width:1399px){
  .axis-item:nth-child(2n) .axis-card{margin-left:24px}
}
@media (max-width:1199px){
  .demo-card{flex:0 0 calc((100% - 24px)/2)}
  .cms-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .hero{padding:56px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-bg{opacity:.2;mask-image:linear-gradient(180deg,#000,transparent 80%);-webkit-mask-image:linear-gradient(180deg,#000,transparent 80%)}
  .price-grid{grid-template-columns:1fr;gap:20px}
  .price-card.is-featured{transform:none}
  .voice-grid{grid-template-columns:1fr}
  .data-bar{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .axis-list::before{left:35px}
  .axis-item{grid-template-columns:72px 1fr}
  .axis-num::after{left:30px}
  .axis-item:nth-child(2n) .axis-card{margin-left:0}
}
@media (max-width:767px){
  body{padding-bottom:88px;font-size:15px}
  .container{padding:0 20px}
  .section{padding:64px 0}
  .nav-top{gap:14px;height:60px}
  .nav-search{display:none}
  .logo{font-size:15px}
  .nav-actions .btn{padding:0 16px;height:40px;font-size:14px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px}
  .hero-sub{font-size:16px}
  .hero-actions .btn{width:100%}
  .trust-row{gap:14px;flex-direction:column;align-items:flex-start}
  .demo-card{flex:0 0 82%}
  .price-card{padding:26px 22px}
  .axis-item{grid-template-columns:1fr;padding-bottom:20px}
  .axis-list::before{display:none}
  .axis-num{padding-top:0;padding-left:0;margin-bottom:10px}
  .axis-num::after{display:none}
  .axis-card{padding:22px 20px}
  .cms-grid{grid-template-columns:1fr}
  .data-bar{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .cta-panel{padding:44px 22px}
  .float-cta{
    left:0;right:0;bottom:0;
    border-radius:0;
    border-left:0;border-right:0;border-bottom:0;
    padding:0 16px;
    height:56px;
    justify-content:space-between;
    transform:translateY(100%);
  }
  .float-cta.is-visible{transform:translateY(0)}
  .float-cta span{font-size:13px}
}
@media (max-width:520px){
  h1{font-size:26px}
  .btn{font-size:14px}
  .hero-panel{padding:14px}
  .footer-grid{gap:26px}
}

/* roulang page: article */
:root{
  --bg-0:#060A16;
  --bg-1:#0A1122;
  --bg-2:#0E1730;
  --surface:rgba(255,255,255,.045);
  --surface-2:rgba(255,255,255,.028);
  --stroke:rgba(120,190,255,.16);
  --stroke-strong:rgba(120,190,255,.34);
  --brand:#38CFFF;
  --brand-deep:#7B6BFF;
  --accent:#FF4D8D;
  --ok:#3EE6A8;
  --text:#E8EFFF;
  --muted:#9AACCB;
  --dim:#68799B;
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:10px;
  --glow:0 10px 30px -10px rgba(56,207,255,.45);
  --card-shadow:0 18px 40px -28px rgba(0,0,0,.9);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box}
*{margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(760px 520px at 6% -8%, rgba(56,207,255,.16), transparent 66%),
    radial-gradient(720px 520px at 102% 10%, rgba(255,77,141,.12), transparent 68%),
    linear-gradient(180deg,#060A16 0%,#070D1C 42%,#060A16 100%);
  background-attachment:fixed;
  min-height:100%;
  padding-bottom:96px;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(120,190,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,190,255,.05) 1px, transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(circle at 50% 12%, #000 0%, transparent 76%);
  mask-image:radial-gradient(circle at 50% 12%, #000 0%, transparent 76%);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0}
ul,ol{list-style:none}
::selection{background:rgba(56,207,255,.28);color:#fff}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;position:relative;z-index:1}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(6,10,22,.86);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--stroke);
}
.nav-top{display:flex;align-items:center;gap:24px;height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:32px;height:32px;border-radius:10px;display:grid;place-items:center;
  font-size:15px;font-weight:700;color:#04121C;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  box-shadow:var(--glow);
}
.logo-text{font-size:16px;font-weight:700;letter-spacing:.4px;white-space:nowrap}
.nav-search{
  flex:1;max-width:420px;display:flex;align-items:center;gap:10px;
  height:38px;padding:0 14px;border-radius:999px;
  background:var(--surface);border:1px solid var(--stroke);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px rgba(56,207,255,.14)}
.nav-search svg{flex:none}
.nav-search input{flex:1;min-width:0;background:transparent;border:0;outline:none;font-size:14px;color:var(--text)}
.nav-search input::placeholder{color:var(--dim)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-channels-wrap{
  position:relative;
  border-top:1px solid rgba(120,190,255,.10);
  background:rgba(10,17,34,.62);
}
.nav-channels-wrap::before,
.nav-channels-wrap::after{
  content:"";position:absolute;top:0;bottom:0;width:24px;pointer-events:none;z-index:2;
}
.nav-channels-wrap::before{left:0;background:linear-gradient(90deg,rgba(8,13,28,.95),transparent)}
.nav-channels-wrap::after{right:0;background:linear-gradient(270deg,rgba(8,13,28,.95),transparent)}
.nav-channels{
  display:flex;align-items:center;gap:8px;height:48px;
  overflow-x:auto;overflow-y:hidden;
  scrollbar-width:none;-ms-overflow-style:none;
}
.nav-channels::-webkit-scrollbar{display:none}
.channel{
  flex:none;padding:7px 14px;border-radius:999px;font-size:14px;
  color:var(--muted);border:1px solid transparent;
  transition:color .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.channel:hover{color:var(--text)}
.channel.is-active{
  color:var(--text);
  border-color:rgba(56,207,255,.55);
  background:rgba(56,207,255,.10);
  box-shadow:inset 0 0 18px rgba(56,207,255,.12);
}
.channel:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

/* ============ 按钮 / 标签 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:999px;font-size:14px;font-weight:500;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease,filter .18s ease;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#04121C;font-weight:700;box-shadow:var(--glow);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{border-color:var(--stroke);color:var(--text);background:transparent}
.btn-ghost:hover{border-color:var(--stroke-strong);background:var(--surface)}
.btn-sm{padding:8px 16px;font-size:13px}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;font-size:13px;line-height:1.6;
  color:var(--brand);background:rgba(56,207,255,.12);border:1px solid rgba(56,207,255,.24);
}
.pill-neutral{color:var(--muted);background:var(--surface);border-color:var(--stroke)}
.pill-neutral:hover{color:var(--text);border-color:var(--stroke-strong)}

/* ============ 阅读进度 ============ */
.progress-bar{position:fixed;top:0;left:0;right:0;height:2px;z-index:1100;background:transparent;pointer-events:none}
.progress-bar span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--brand),var(--accent));transition:width .12s linear}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding-top:26px;font-size:13px;color:var(--muted);
}
.breadcrumb a{color:var(--muted);transition:color .2s ease}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--dim)}
.breadcrumb .current{color:var(--text);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章头部 ============ */
.article-head{padding:24px 0 0}
.article-title{
  font-size:clamp(28px,4vw,44px);
  line-height:1.24;
  font-weight:700;
  letter-spacing:-.01em;
  max-width:900px;
  margin-top:16px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  margin-top:22px;font-size:13px;color:var(--muted);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--dim)}
.article-cover{
  margin-top:30px;border:1px solid var(--stroke);border-radius:var(--radius-lg);
  overflow:hidden;background:var(--surface-2);
}
.article-cover img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover}
.article-cover figcaption{
  padding:12px 16px;font-size:13px;color:var(--dim);text-align:center;
  border-top:1px solid rgba(120,190,255,.10);
}

/* ============ 正文布局 ============ */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 220px;
  gap:56px;
  align-items:start;
  padding-top:44px;
}
.article-main{max-width:760px;min-width:0}
.article-side{position:sticky;top:136px;display:flex;flex-direction:column;gap:16px}
.toc-card{
  background:var(--surface);border:1px solid var(--stroke);
  border-radius:var(--radius-lg);padding:20px;
}
.toc-card h2{font-size:14px;font-weight:500;color:var(--text);letter-spacing:.4px}
.toc-list{margin-top:14px;display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:block;font-size:13px;line-height:1.7;color:var(--muted);
  padding:6px 0 6px 12px;border-left:2px solid rgba(120,190,255,.14);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.toc-list a:hover{color:var(--text);border-left-color:var(--brand)}
.toc-list a.is-active{color:var(--brand);border-left-color:var(--brand);background:rgba(56,207,255,.06)}
.toc-list a.toc-sub{padding-left:24px;font-size:12.5px}
.side-card{
  background:linear-gradient(150deg,rgba(56,207,255,.12),rgba(255,77,141,.08));
  border:1px solid var(--stroke);border-radius:var(--radius-lg);padding:20px;
}
.side-card h2{font-size:14px;font-weight:500}
.side-card p{margin-top:10px;font-size:13px;line-height:1.8;color:var(--muted)}
.side-card .btn{margin-top:14px;width:100%}

/* ============ 正文排版 ============ */
.prose{font-size:17px;line-height:1.95;color:#D5DEEF;word-wrap:break-word}
.prose > *:first-child{margin-top:0}
.prose p{margin:0 0 20px}
.prose h2{
  position:relative;
  font-size:clamp(22px,2.2vw,28px);
  line-height:1.4;
  font-weight:700;
  color:var(--text);
  margin:52px 0 18px;
  padding-left:15px;
  scroll-margin-top:128px;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-deep));
  box-shadow:0 0 12px rgba(56,207,255,.6);
}
.prose h3{
  font-size:19px;line-height:1.5;font-weight:500;color:var(--text);
  margin:34px 0 12px;scroll-margin-top:128px;
}
.prose h4{font-size:16px;font-weight:500;color:var(--text);margin:26px 0 10px}
.prose ul,.prose ol{margin:0 0 22px;padding-left:22px}
.prose ul{list-style:disc}
.prose ol{list-style:decimal}
.prose li{margin-bottom:9px;line-height:1.8}
.prose li::marker{color:var(--brand)}
.prose a{color:var(--brand);border-bottom:1px solid rgba(56,207,255,.35);transition:border-color .2s ease}
.prose a:hover{border-bottom-color:var(--brand)}
.prose strong{color:#FFFFFF;font-weight:700}
.prose blockquote{
  margin:26px 0;padding:18px 22px;
  border-left:3px solid var(--brand);
  border-radius:0 var(--radius-md) var(--radius-md) 0;
  background:var(--surface);
  color:var(--muted);font-size:15.5px;line-height:1.9;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{
  border-radius:12px;border:1px solid var(--stroke);
  margin:26px auto;height:auto;
}
.prose figure{margin:26px 0}
.prose figcaption{font-size:13px;color:var(--dim);text-align:center;margin-top:10px}
.prose code{
  font-family:var(--font-mono);font-size:14px;
  background:rgba(56,207,255,.10);color:#A8E6FF;
  padding:2px 6px;border-radius:6px;
}
.prose pre{
  background:rgba(6,10,22,.7);border:1px solid var(--stroke);
  border-radius:var(--radius-md);padding:18px;overflow-x:auto;margin:0 0 22px;
}
.prose pre code{background:none;padding:0;color:#C9D8F0}
.prose hr{border:0;border-top:1px solid var(--stroke);margin:40px 0}
.prose table{
  width:100%;border-collapse:collapse;margin:26px 0;
  font-size:14px;border:1px solid var(--stroke);border-radius:var(--radius-md);
  overflow:hidden;
}
.prose th{
  text-align:left;font-size:13px;font-weight:500;color:var(--muted);
  padding:14px 16px;background:rgba(255,255,255,.03);
  border-bottom:1px solid var(--stroke);
}
.prose td{
  padding:14px 16px;color:#D5DEEF;
  border-bottom:1px solid rgba(120,190,255,.10);
}
.prose tbody tr:nth-child(even) td{background:rgba(255,255,255,.02)}
.prose tbody tr:last-child td{border-bottom:0}
.prose tbody td:first-child{font-weight:500;color:var(--text)}

/* ============ 空态 ============ */
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:16px;
  padding:60px 24px;text-align:center;
  background:var(--surface);border:1px solid var(--stroke);border-radius:var(--radius-lg);
}
.empty-icon{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;
  background:rgba(56,207,255,.12);color:var(--brand);font-size:22px;
}
.empty-state h2{font-size:18px;font-weight:500}
.empty-state p{font-size:14px;color:var(--muted)}

/* ============ 标签 / 相关推荐 ============ */
.tag-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:44px;padding-top:28px;border-top:1px solid var(--stroke);
}
.tag-row .tag-label{font-size:13px;color:var(--dim);margin-right:4px}
.related{margin-top:64px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:22px}
.section-head h2{font-size:clamp(20px,2vw,26px);font-weight:700;line-height:1.4}
.section-head .link-more{font-size:13px;color:var(--brand)}
.section-head .link-more:hover{text-decoration:underline}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--stroke);
  border-radius:var(--radius-lg);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.news-card:hover{transform:translateY(-2px);border-color:rgba(56,207,255,.42);box-shadow:var(--card-shadow)}
.news-card:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
.news-thumb{width:100%;aspect-ratio:16/9;object-fit:cover;border-bottom:1px solid var(--stroke)}
.news-body{display:flex;flex-direction:column;gap:10px;padding:18px;flex:1}
.news-title{
  font-size:15px;font-weight:500;line-height:1.55;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card:hover .news-title{color:#FFFFFF}
.news-desc{
  font-size:13px;line-height:1.75;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  margin-top:auto;padding-top:6px;font-size:12px;color:var(--dim);
}
.back-row{margin-top:40px}

/* ============ 收尾 CTA ============ */
.end-cta{
  position:relative;z-index:1;
  margin:96px 0 0;padding:64px 32px;border-radius:24px;text-align:center;
  background:linear-gradient(140deg,rgba(56,207,255,.14),rgba(255,77,141,.10));
  border:1px solid var(--stroke);
  overflow:hidden;
}
.end-cta::after{
  content:"";position:absolute;inset:-40% 30% auto -20%;height:280px;
  background:radial-gradient(circle,rgba(56,207,255,.22),transparent 68%);
  pointer-events:none;
}
.end-cta h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.45;position:relative}
.end-cta p{position:relative;margin:14px auto 0;max-width:600px;font-size:15px;color:var(--muted);line-height:1.9}
.end-cta .btn{margin-top:26px;position:relative}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:900;
  display:flex;align-items:center;gap:12px;
  padding:10px 12px 10px 18px;border-radius:999px;
  background:rgba(10,17,34,.92);
  border:1px solid var(--stroke);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  box-shadow:0 20px 44px -26px rgba(0,0,0,.95);
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .3s ease,transform .3s ease;
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto}
.float-text{font-size:13px;color:var(--muted);white-space:nowrap}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;z-index:1;
  margin-top:96px;border-top:1px solid var(--stroke);
  background:linear-gradient(180deg,rgba(10,17,34,.5),rgba(6,10,22,.9));
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;padding:64px 0 40px;
}
.footer-brand p{margin-top:16px;font-size:13.5px;line-height:1.9;color:var(--muted);max-width:320px}
.footer-col h4{font-size:14px;font-weight:500;color:var(--text);margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col li a{font-size:13.5px;color:var(--muted);transition:color .2s ease}
.footer-col li a:hover{color:var(--brand)}
.footer-col p{margin-top:14px;font-size:13px;color:var(--dim);line-height:1.8}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:22px 0 30px;border-top:1px solid rgba(120,190,255,.10);
  font-size:12.5px;color:var(--dim);
}

/* ============ 响应式 ============ */
@media (max-width:1439px){
  .container{max-width:1180px}
}
@media (max-width:1023px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0}
  .article-side{display:none}
  .article-main{max-width:100%}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{padding-bottom:88px;font-size:15px}
  .container{padding:0 20px}
  .nav-top{height:58px;gap:12px}
  .nav-search{display:none}
  .logo-text{font-size:15px}
  .nav-channels{height:44px}
  .breadcrumb{padding-top:20px}
  .article-title{margin-top:12px}
  .article-cover{margin-top:22px}
  .prose{font-size:16px;line-height:1.9}
  .prose table{display:block;overflow-x:auto;white-space:nowrap;-webkit-overflow-scrolling:touch}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .end-cta{margin-top:64px;padding:44px 22px;border-radius:20px}
  .site-footer{margin-top:64px}
  .footer-grid{grid-template-columns:1fr;padding:48px 0 28px;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .float-cta{
    left:0;right:0;bottom:0;height:56px;border-radius:0;
    justify-content:space-between;padding:0 20px;
    border-left:0;border-right:0;border-bottom:0;
    transform:translateY(100%);
  }
  .float-cta.is-visible{transform:translateY(0)}
}
@media (max-width:520px){
  .article-meta{gap:8px 12px}
  .breadcrumb .current{max-width:30ch}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px}
  .float-text{display:none}
  .float-cta{justify-content:center}
}

/* roulang page: category1 */
:root{
  --bg-0:#060A16;
  --bg-1:#0A1122;
  --bg-2:#0E1730;
  --surface:rgba(255,255,255,0.045);
  --surface-2:rgba(255,255,255,0.07);
  --stroke:rgba(120,190,255,0.16);
  --stroke-strong:rgba(56,207,255,0.42);
  --brand:#38CFFF;
  --brand-deep:#6F8CFF;
  --accent:#FF4D8D;
  --ok:#3EE6A8;
  --text:#E8EFFF;
  --muted:#9AACCB;
  --dim:#68799B;
  --radius:18px;
  --radius-sm:12px;
  --pill:999px;
  --container:1240px;
  --gap:24px;
  --section:96px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,"JetBrains Mono",Menlo,Consolas,"Courier New",monospace;
  --shadow-brand:0 10px 30px -10px rgba(56,207,255,0.55);
  --shadow-accent:0 10px 30px -12px rgba(255,77,141,0.5);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding-bottom:96px;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  color:var(--text);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 620px at 10% -8%, rgba(56,207,255,0.16), transparent 62%),
    radial-gradient(780px 540px at 102% 14%, rgba(255,77,141,0.12), transparent 60%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(120,190,255,0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,190,255,0.045) 1px, transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 50% 0%, #000 0%, transparent 78%);
  mask-image:radial-gradient(circle at 50% 0%, #000 0%, transparent 78%);
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:0.2px;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
img{display:block;max-width:100%;height:auto;border-radius:var(--radius-sm);}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input{font:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.site-header,.site-footer,main{position:relative;z-index:1;}

/* ============ 双层导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(6,10,22,0.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--stroke);
}
.nav-top{
  display:flex;
  align-items:center;
  gap:24px;
  height:64px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.logo-mark{
  display:grid;
  place-items:center;
  width:34px;
  height:34px;
  border-radius:11px;
  font-size:17px;
  font-weight:700;
  color:#04121F;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep) 70%,var(--accent));
  box-shadow:0 0 20px -6px rgba(56,207,255,0.75);
}
.logo-text{
  font-size:16px;
  font-weight:500;
  letter-spacing:0.4px;
  white-space:nowrap;
}
.nav-search{
  display:flex;
  align-items:center;
  gap:10px;
  flex:1 1 auto;
  max-width:420px;
  height:38px;
  padding:0 14px;
  border-radius:var(--pill);
  background:var(--surface);
  border:1px solid var(--stroke);
  transition:border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.nav-search:focus-within{
  border-color:var(--stroke-strong);
  background:var(--surface-2);
  box-shadow:0 0 0 3px rgba(56,207,255,0.14);
}
.nav-search input{
  flex:1 1 auto;
  min-width:0;
  height:100%;
  background:none;
  border:0;
  outline:none;
  color:var(--text);
  font-size:14px;
}
.nav-search input::placeholder{color:var(--dim);}
.nav-actions{margin-left:auto;flex:0 0 auto;}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--pill);
  font-size:15px;
  font-weight:500;
  white-space:nowrap;
  transition:transform .18s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, opacity .2s ease;
}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-primary{
  color:#04121F;
  font-weight:700;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  box-shadow:var(--shadow-brand);
}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.08);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  color:var(--text);
  border:1px solid var(--stroke-strong);
  background:rgba(56,207,255,0.05);
}
.btn-ghost:hover{background:rgba(56,207,255,0.12);transform:translateY(-1px);}
.btn-plain{
  color:var(--text);
  border:1px solid var(--stroke);
  background:var(--surface);
}
.btn-plain:hover{border-color:var(--stroke-strong);transform:translateY(-1px);}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none;box-shadow:none;}

.nav-channels-wrap{
  border-top:1px solid var(--stroke);
  background:rgba(8,13,27,0.7);
  -webkit-mask-image:linear-gradient(90deg, transparent 0, #000 24px, #000 calc(100% - 24px), transparent 100%);
  mask-image:linear-gradient(90deg, transparent 0, #000 24px, #000 calc(100% - 24px), transparent 100%);
}
.nav-channels{
  display:flex;
  align-items:center;
  gap:8px;
  height:48px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.nav-channels::-webkit-scrollbar{display:none;}
.channel{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  height:32px;
  padding:0 15px;
  border-radius:var(--pill);
  font-size:14px;
  color:var(--muted);
  border:1px solid transparent;
  transition:color .2s ease, background .2s ease, border-color .2s ease;
}
.channel:hover{color:var(--text);}
.channel.is-active{
  color:var(--text);
  border-color:var(--stroke-strong);
  background:rgba(56,207,255,0.1);
  box-shadow:inset 0 0 0 1px rgba(56,207,255,0.08), 0 0 20px -10px rgba(56,207,255,0.9);
}

/* ============ 页面首屏 ============ */
.page-hero{
  position:relative;
  scroll-margin-top:128px;
  padding:56px 0 56px;
  border-bottom:1px solid var(--stroke);
  background-image:
    linear-gradient(100deg, rgba(6,10,22,0.95) 0%, rgba(6,10,22,0.78) 48%, rgba(6,10,22,0.62) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--dim);
  margin-bottom:22px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--muted);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb span.sep{color:var(--dim);}
.breadcrumb .current{color:var(--text);}
.page-hero h1{
  font-size:clamp(28px,4.2vw,44px);
  line-height:1.15;
  max-width:860px;
}
.page-hero .lede{
  margin-top:20px;
  max-width:780px;
  font-size:16px;
  line-height:1.9;
  color:var(--muted);
}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:28px;
}
.tag{
  display:inline-flex;
  align-items:center;
  height:28px;
  padding:0 13px;
  border-radius:var(--pill);
  font-size:13px;
  color:var(--brand);
  background:rgba(56,207,255,0.12);
  border:1px solid rgba(56,207,255,0.2);
}
.tag-accent{
  color:var(--accent);
  background:rgba(255,77,141,0.12);
  border-color:rgba(255,77,141,0.24);
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:26px;
  margin-top:30px;
  padding-top:22px;
  border-top:1px solid var(--stroke);
  font-size:13px;
  color:var(--dim);
}
.hero-meta b{color:var(--text);font-weight:500;font-family:var(--mono);}

/* ============ 双栏布局 ============ */
.guide-layout{
  display:grid;
  grid-template-columns:260px minmax(0,1fr);
  gap:48px;
  align-items:start;
  padding-top:72px;
  padding-bottom:var(--section);
}
.toc{
  position:sticky;
  top:128px;
  padding:22px 20px;
  border-radius:var(--radius);
  background:var(--surface);
  border:1px solid var(--stroke);
  background-image:linear-gradient(160deg, rgba(56,207,255,0.07), transparent 55%);
}
.toc h2{
  font-size:14px;
  font-weight:500;
  color:var(--muted);
  letter-spacing:1px;
  margin-bottom:14px;
}
.toc ol{counter-reset:toc;display:flex;flex-direction:column;gap:2px;}
.toc li{counter-increment:toc;}
.toc a{
  display:flex;
  align-items:baseline;
  gap:10px;
  padding:9px 10px;
  border-radius:10px;
  font-size:14px;
  color:var(--muted);
  border-left:2px solid transparent;
  transition:color .2s ease, background .2s ease, border-color .2s ease;
}
.toc a::before{
  content:counter(toc,decimal-leading-zero);
  font-family:var(--mono);
  font-size:12px;
  color:var(--dim);
}
.toc a:hover{color:var(--text);background:rgba(255,255,255,0.04);}
.toc a.is-active{
  color:var(--brand);
  border-left-color:var(--brand);
  background:rgba(56,207,255,0.08);
}
.toc a.is-active::before{color:var(--brand);}
.toc-note{
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid var(--stroke);
  font-size:13px;
  line-height:1.8;
  color:var(--dim);
}

.guide-main{min-width:0;display:flex;flex-direction:column;gap:72px;}
.block{scroll-margin-top:128px;}
.block-head{margin-bottom:28px;}
.block-head .eyebrow{
  display:inline-block;
  font-size:13px;
  color:var(--brand);
  letter-spacing:1px;
  margin-bottom:10px;
}
.block-head h2{
  font-size:clamp(22px,2.4vw,30px);
  margin-bottom:12px;
}
.block-head p{
  max-width:720px;
  color:var(--muted);
  font-size:15px;
}

/* 模式卡片 */
.mode-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--gap);
}
.mode-card{
  display:flex;
  flex-direction:column;
  gap:12px;
  padding:24px;
  border-radius:var(--radius);
  background:var(--surface);
  border:1px solid var(--stroke);
  background-image:linear-gradient(150deg, rgba(56,207,255,0.06), transparent 60%);
  transition:transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}
.mode-card:hover{
  transform:translateY(-3px);
  border-color:rgba(56,207,255,0.36);
  box-shadow:0 18px 40px -28px rgba(56,207,255,0.9);
}
.mode-card h3{font-size:18px;font-weight:500;}
.mode-card p{font-size:14px;color:var(--muted);line-height:1.8;}
.mode-card .mini{
  margin-top:auto;
  font-size:13px;
  color:var(--dim);
  font-family:var(--mono);
}
.mode-icon{
  width:40px;
  height:40px;
  border-radius:12px;
  display:grid;
  place-items:center;
  color:var(--brand);
  background:rgba(56,207,255,0.12);
  border:1px solid rgba(56,207,255,0.22);
}
.mode-icon svg{width:20px;height:20px;}

/* 时间线 */
.timeline{position:relative;display:flex;flex-direction:column;gap:32px;}
.timeline::before{
  content:"";
  position:absolute;
  left:19px;
  top:12px;
  bottom:12px;
  width:2px;
  border-radius:2px;
  background:linear-gradient(180deg, var(--brand), var(--brand-deep) 55%, rgba(255,77,141,0.7));
  opacity:.6;
}
.step{
  position:relative;
  padding-left:64px;
}
.step-num{
  position:absolute;
  left:0;
  top:2px;
  width:40px;
  height:40px;
  display:grid;
  place-items:center;
  border-radius:50%;
  font-family:var(--mono);
  font-size:15px;
  font-weight:700;
  color:#04121F;
  background:linear-gradient(140deg, var(--brand), var(--brand-deep));
  box-shadow:0 0 24px -8px rgba(56,207,255,0.9);
}
.step-body{
  padding:24px 26px;
  border-radius:var(--radius);
  background:var(--surface);
  border:1px solid var(--stroke);
  background-image:linear-gradient(160deg, rgba(255,255,255,0.035), transparent 60%);
  transition:border-color .22s ease, box-shadow .22s ease;
}
.step-body:hover{
  border-color:rgba(56,207,255,0.3);
  box-shadow:0 20px 44px -32px rgba(56,207,255,0.85);
}
.step-body h3{
  font-size:18px;
  font-weight:500;
  margin-bottom:10px;
}
.step-body p{
  font-size:15px;
  color:var(--muted);
  line-height:1.85;
}
.step-figure{margin-top:18px;}
.step-figure img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border:1px solid var(--stroke);
  box-shadow:inset 0 0 0 1px rgba(120,190,255,0.06);
}
.step-figure figcaption{
  margin-top:10px;
  text-align:center;
  font-size:13px;
  color:var(--dim);
}
.step-list{
  margin-top:14px;
  display:flex;
  flex-direction:column;
  gap:8px;
}
.step-list li{
  position:relative;
  padding-left:18px;
  font-size:14px;
  color:var(--muted);
  line-height:1.8;
}
.step-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:11px;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 10px -2px rgba(56,207,255,0.9);
}

/* 适用场景 */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:var(--gap);
}
.scene-card{
  padding:24px 26px;
  border-radius:var(--radius);
  border:1px solid var(--stroke);
  background:var(--surface);
  transition:transform .22s ease, border-color .22s ease;
}
.scene-card:hover{transform:translateY(-3px);border-color:rgba(255,77,141,0.32);}
.scene-card h3{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:500;
  margin-bottom:10px;
}
.scene-card h3 span.dot{
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 12px -2px rgba(255,77,141,0.9);
}
.scene-card p{font-size:14px;color:var(--muted);line-height:1.85;}

/* 提示区 */
.tips-panel{
  padding:28px 30px;
  border-radius:var(--radius);
  border:1px solid var(--stroke);
  background:linear-gradient(160deg, rgba(56,207,255,0.07), rgba(255,255,255,0.02));
}
.tips-panel ul{display:flex;flex-direction:column;gap:16px;}
.tips-panel li{
  display:flex;
  gap:14px;
  font-size:15px;
  color:var(--muted);
  line-height:1.85;
}
.tips-panel li strong{
  flex:0 0 auto;
  color:var(--text);
  font-weight:500;
}
.tips-panel li .idx{
  flex:0 0 auto;
  font-family:var(--mono);
  font-size:13px;
  color:var(--brand);
  padding-top:3px;
}

/* FAQ */
.faq-list{
  border-radius:var(--radius);
  border:1px solid var(--stroke);
  background:var(--surface);
  overflow:hidden;
}
.faq-item + .faq-item{border-top:1px solid var(--stroke);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 26px;
  text-align:left;
  font-size:16px;
  font-weight:500;
  color:var(--text);
  transition:background .2s ease, color .2s ease;
}
.faq-q:hover{background:rgba(255,255,255,0.035);color:var(--brand);}
.faq-q .sign{
  position:relative;
  flex:0 0 auto;
  width:18px;
  height:18px;
  transition:transform .22s ease;
}
.faq-q .sign::before,
.faq-q .sign::after{
  content:"";
  position:absolute;
  background:var(--brand);
  border-radius:2px;
}
.faq-q .sign::before{left:0;top:8px;width:18px;height:2px;}
.faq-q .sign::after{left:8px;top:0;width:2px;height:18px;transition:opacity .22s ease;}
.faq-item.is-open .faq-q .sign{transform:rotate(180deg);}
.faq-item.is-open .faq-q .sign::after{opacity:0;}
.faq-a{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows .28s ease;
}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
.faq-a > div{overflow:hidden;}
.faq-a p{
  padding:0 26px 22px;
  font-size:15px;
  line-height:1.9;
  color:var(--muted);
}

/* 收尾 CTA */
.cta-final{
  padding:96px 0;
  border-top:1px solid var(--stroke);
  background-image:
    radial-gradient(700px 420px at 50% 0%, rgba(56,207,255,0.12), transparent 65%);
}
.cta-panel{
  max-width:760px;
  margin:0 auto;
  padding:52px 40px;
  text-align:center;
  border-radius:24px;
  border:1px solid var(--stroke);
  background:var(--surface);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  background-image:linear-gradient(150deg, rgba(56,207,255,0.1), rgba(255,77,141,0.06) 70%, transparent);
}
.cta-panel h2{font-size:clamp(22px,2.6vw,32px);margin-bottom:14px;}
.cta-panel p{color:var(--muted);font-size:15px;max-width:520px;margin:0 auto 28px;}
.cta-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--stroke);
  background:linear-gradient(180deg, rgba(10,17,34,0.9), rgba(6,10,22,0.98));
  padding-top:64px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand p{
  margin-top:16px;
  font-size:14px;
  line-height:1.9;
  color:var(--dim);
  max-width:320px;
}
.footer-col h4{
  font-size:15px;
  font-weight:500;
  margin-bottom:16px;
  color:var(--text);
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{
  font-size:14px;
  color:var(--muted);
  transition:color .2s ease, padding-left .2s ease;
}
.footer-col a:hover{color:var(--brand);padding-left:4px;}
.footer-col p{
  margin-top:14px;
  font-size:13px;
  color:var(--dim);
  line-height:1.8;
}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:22px 0 28px;
  border-top:1px solid var(--stroke);
  font-size:13px;
  color:var(--dim);
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:900;
  display:inline-flex;
  align-items:center;
  gap:14px;
  padding:10px 12px 10px 20px;
  border-radius:var(--pill);
  background:rgba(10,17,34,0.9);
  border:1px solid var(--stroke-strong);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:0 18px 44px -24px rgba(0,0,0,0.9), 0 0 30px -18px rgba(56,207,255,0.9);
  opacity:0;
  transform:translateY(12px);
  pointer-events:none;
  transition:opacity .3s ease, transform .3s ease;
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta .txt{font-size:14px;color:var(--muted);white-space:nowrap;}
.float-cta .txt b{color:var(--text);font-weight:500;}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .container{padding:0 28px;}
}
@media (max-width:1023px){
  .guide-layout{
    grid-template-columns:minmax(0,1fr);
    gap:40px;
    padding-top:56px;
    padding-bottom:72px;
  }
  .toc{position:static;top:auto;}
  .toc ol{
    flex-direction:row;
    flex-wrap:wrap;
    gap:8px;
  }
  .toc a{
    border-left:0;
    border:1px solid var(--stroke);
    border-radius:var(--pill);
    padding:6px 14px;
  }
  .toc a.is-active{border-color:var(--stroke-strong);}
  .mode-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .nav-search{max-width:280px;}
  .cta-final{padding:72px 0;}
}
@media (max-width:767px){
  body{padding-bottom:88px;font-size:15px;}
  .container{padding:0 20px;}
  .nav-top{height:58px;gap:14px;}
  .nav-search{display:none;}
  .nav-actions .btn{height:36px;padding:0 15px;font-size:13px;}
  .nav-channels{height:46px;}
  .page-hero{padding:40px 0 44px;}
  .page-hero .lede{font-size:15px;}
  .hero-meta{gap:14px 22px;font-size:12px;}
  .guide-main{gap:56px;}
  .mode-grid,
  .scene-grid{grid-template-columns:minmax(0,1fr);}
  .step{padding-left:52px;}
  .step-num{width:34px;height:34px;font-size:14px;}
  .timeline::before{left:16px;}
  .step-body{padding:20px;}
  .tips-panel{padding:22px;}
  .faq-q{padding:17px 20px;font-size:15px;}
  .faq-a p{padding:0 20px 20px;}
  .cta-panel{padding:36px 22px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;padding-bottom:36px;}
  .footer-bottom{flex-direction:column;gap:8px;font-size:12px;}
  .float-cta{
    left:0;
    right:0;
    bottom:0;
    width:100%;
    height:56px;
    padding:0 16px;
    border-radius:0;
    border-left:0;
    border-right:0;
    border-bottom:0;
    justify-content:space-between;
    opacity:1;
    transform:none;
    pointer-events:auto;
  }
  .float-cta .txt{font-size:13px;}
  .float-cta .btn{height:36px;padding:0 16px;font-size:13px;}
}
@media (max-width:520px){
  .page-hero h1{font-size:26px;}
  .block-head h2{font-size:21px;}
  .step{padding-left:46px;}
  .step-num{width:30px;height:30px;font-size:13px;}
  .timeline::before{left:14px;}
  .cta-actions .btn{width:100%;}
}

/* roulang page: category2 */
:root{
  --bg-0:#060A16;
  --bg-1:#0A1122;
  --bg-2:#0E1730;
  --surface:rgba(255,255,255,.045);
  --surface-2:rgba(255,255,255,.07);
  --stroke:rgba(120,190,255,.16);
  --stroke-strong:rgba(120,190,255,.34);
  --brand:#38CFFF;
  --brand-deep:#6C7BFF;
  --accent:#FF4D8D;
  --ok:#3EE6A8;
  --text:#E8EFFF;
  --muted:#9AACCB;
  --dim:#68799B;
  --radius:18px;
  --radius-sm:12px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:
    radial-gradient(900px 620px at 6% -6%,rgba(56,207,255,.16),transparent 62%),
    radial-gradient(780px 540px at 96% 4%,rgba(255,77,141,.12),transparent 64%),
    var(--bg-0);
  padding-bottom:96px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(120,190,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,190,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 50% 12%,#000 0%,transparent 76%);
  mask-image:radial-gradient(circle at 50% 12%,#000 0%,transparent 76%);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;font-size:15px;line-height:1;padding:14px 26px;border-radius:999px;border:1px solid transparent;transition:transform .18s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,opacity .22s ease;white-space:nowrap}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-primary{color:#04121F;background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);box-shadow:0 10px 30px -12px rgba(56,207,255,.6)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 16px 34px -14px rgba(56,207,255,.7)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 18px -10px rgba(56,207,255,.5)}
.btn-secondary{background:var(--surface);border-color:var(--stroke);color:var(--text)}
.btn-secondary:hover{background:var(--surface-2);border-color:var(--stroke-strong);transform:translateY(-1px)}
.btn-secondary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--stroke);color:var(--text)}
.btn-ghost:hover{border-color:var(--stroke-strong);color:#fff;background:rgba(56,207,255,.06)}
.btn:disabled,.btn.is-disabled{opacity:.4;box-shadow:none;pointer-events:none}

/* 头部 */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(6,10,22,.84);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--stroke)}
.nav-top{display:flex;align-items:center;gap:24px;height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:32px;height:32px;border-radius:10px;display:grid;place-items:center;font-size:15px;font-weight:700;color:#04121F;background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);box-shadow:0 6px 18px -8px rgba(56,207,255,.7)}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.2px}
.nav-search{flex:1;max-width:420px;display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;border-radius:999px;background:var(--surface);border:1px solid var(--stroke);transition:border-color .2s ease,box-shadow .2s ease}
.nav-search:focus-within{border-color:var(--stroke-strong);box-shadow:0 0 0 4px rgba(56,207,255,.1)}
.nav-search input{flex:1;min-width:0;background:none;border:0;outline:none;color:var(--text);font-size:14px;font-family:inherit}
.nav-search input::placeholder{color:var(--dim)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-channels-wrap{border-top:1px solid var(--stroke);-webkit-mask-image:linear-gradient(90deg,transparent 0,#000 24px,#000 calc(100% - 24px),transparent 100%);mask-image:linear-gradient(90deg,transparent 0,#000 24px,#000 calc(100% - 24px),transparent 100%)}
.nav-channels{display:flex;align-items:center;gap:4px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.nav-channels::-webkit-scrollbar{display:none}
.channel{flex-shrink:0;padding:11px 16px;border-radius:999px;font-size:14.5px;color:var(--muted);white-space:nowrap;transition:color .2s ease,background .2s ease,box-shadow .2s ease}
.channel:hover{color:var(--text)}
.channel.is-active{color:#fff;background:rgba(56,207,255,.1);box-shadow:inset 0 0 0 1px rgba(56,207,255,.38),0 0 18px -8px rgba(56,207,255,.7);text-shadow:0 0 12px rgba(56,207,255,.45)}

/* 首屏 */
.page-hero{position:relative;overflow:hidden;padding:72px 0 68px;scroll-margin-top:128px;border-bottom:1px solid var(--stroke)}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(115deg,rgba(6,10,22,.94) 8%,rgba(6,10,22,.72) 52%,rgba(6,10,22,.9) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.95;
}
.page-hero .container{position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--dim);margin-bottom:22px}
.breadcrumb a{color:var(--muted);transition:color .2s ease}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span.sep{color:var(--dim)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;font-size:13px;color:var(--brand);background:rgba(56,207,255,.1);border:1px solid rgba(56,207,255,.26);margin-bottom:20px}
.page-hero h1{font-size:clamp(30px,4vw,46px);line-height:1.16;font-weight:700;letter-spacing:-.5px;max-width:820px}
.lede{margin-top:20px;max-width:760px;font-size:17px;line-height:1.9;color:var(--muted)}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-meta{display:flex;flex-wrap:wrap;gap:14px 32px;margin-top:34px;font-size:13.5px;color:var(--muted)}
.hero-meta li{display:flex;align-items:center;gap:9px}
.hero-meta li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(56,207,255,.9)}

/* 通用区块 */
.section{padding:96px 0;position:relative;z-index:1;scroll-margin-top:128px}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{font-size:clamp(22px,2.4vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.3px}
.section-head p{margin-top:14px;color:var(--muted);font-size:15.5px;line-height:1.9}
.section-tight{padding-top:0}

/* 筛选与总览 */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:36px}
.filter-pill{padding:9px 18px;border-radius:999px;font-size:14px;color:var(--muted);background:var(--surface);border:1px solid var(--stroke);transition:color .2s ease,border-color .2s ease,background .2s ease,box-shadow .2s ease}
.filter-pill:hover{color:var(--text);border-color:var(--stroke-strong)}
.filter-pill.is-active{color:#04121F;background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);border-color:transparent;font-weight:700;box-shadow:0 10px 26px -14px rgba(56,207,255,.8)}
.overview{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center;padding:28px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--stroke)}
.overview-media{border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--stroke)}
.overview-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/9}
.overview h3{font-size:21px;font-weight:700;margin-bottom:14px}
.overview p{color:var(--muted);font-size:15.5px}
.overview ul{margin-top:18px;display:grid;gap:10px}
.overview ul li{display:flex;gap:10px;font-size:14.5px;color:var(--muted)}
.overview ul li::before{content:"";flex:0 0 auto;width:6px;height:6px;margin-top:10px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px rgba(255,77,141,.8)}

/* 入口卡网格 */
.card-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.entry-card{display:flex;flex-direction:column;gap:14px;padding:24px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--stroke);transition:transform .2s ease,border-color .2s ease,background .2s ease,box-shadow .2s ease}
.entry-card:hover{transform:translateY(-2px);border-color:rgba(56,207,255,.4);background:var(--surface-2);box-shadow:0 18px 40px -26px rgba(56,207,255,.75)}
.entry-icon{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:rgba(56,207,255,.12);border:1px solid rgba(56,207,255,.24)}
.entry-icon svg{width:22px;height:22px;stroke:var(--brand);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.entry-card h3{font-size:17px;font-weight:700;line-height:1.5}
.entry-card p{font-size:14px;color:var(--muted);line-height:1.8}
.entry-foot{margin-top:auto;padding-top:14px;border-top:1px dashed var(--stroke);display:flex;align-items:center;justify-content:space-between;gap:10px}
.tag{display:inline-flex;align-items:center;padding:4px 11px;border-radius:999px;font-size:12px;color:var(--brand);background:rgba(56,207,255,.12);border:1px solid rgba(56,207,255,.2)}
.tag-accent{color:var(--accent);background:rgba(255,77,141,.12);border-color:rgba(255,77,141,.22)}
.entry-time{font-size:12px;color:var(--dim);font-family:var(--font-mono)}
.entry-card.is-hidden{display:none}
.grid-empty{display:none;padding:48px 24px;text-align:center;border-radius:var(--radius);background:var(--surface);border:1px solid var(--stroke);color:var(--muted)}
.grid-empty p{margin-bottom:16px}
.grid-empty.is-visible{display:block}

/* 分页视觉位 */
.pager{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:44px;font-family:var(--font-mono);font-size:13px}
.pager-item{min-width:36px;height:36px;display:grid;place-items:center;padding:0 12px;border-radius:10px;background:var(--surface);border:1px solid var(--stroke);color:var(--muted)}
.pager-item.is-current{color:#04121F;background:linear-gradient(135deg,var(--brand),var(--brand-deep));border-color:transparent;font-weight:700}
.pager-ellipsis{color:var(--dim);padding:0 4px}

/* 步骤 */
.steps{display:grid;gap:28px;margin-top:8px}
.step{position:relative;display:flex;gap:20px}
.step:not(:last-child)::after{content:"";position:absolute;left:23px;top:60px;bottom:-30px;width:1px;background:linear-gradient(180deg,rgba(56,207,255,.55),rgba(56,207,255,0))}
.step-num{flex:0 0 48px;width:48px;height:48px;border-radius:14px;display:grid;place-items:center;font-family:var(--font-mono);font-size:15px;color:var(--brand);background:rgba(56,207,255,.1);box-shadow:inset 0 0 0 1px rgba(56,207,255,.28)}
.step-body h3{font-size:18px;font-weight:500;line-height:1.3}
.step-body p{margin-top:10px;color:var(--muted);font-size:15px;max-width:760px}

/* FAQ */
.faq-list{border-radius:var(--radius);background:var(--surface);border:1px solid var(--stroke);overflow:hidden}
.faq-item+.faq-item{border-top:1px solid var(--stroke)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;text-align:left;padding:22px 26px;font-size:16px;font-weight:500;line-height:1.6;transition:background .2s ease}
.faq-q:hover{background:rgba(56,207,255,.05)}
.faq-icon{position:relative;flex:0 0 18px;width:18px;height:18px;transition:transform .24s ease}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px;transition:opacity .24s ease}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s ease}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a-inner p{padding:0 26px 24px;color:var(--muted);font-size:15px;line-height:1.9;max-width:900px}

/* CTA */
.cta-section{padding-top:24px}
.cta-panel{position:relative;overflow:hidden;text-align:center;padding:64px 32px;border-radius:24px;background:var(--surface);border:1px solid var(--stroke)}
.cta-panel::after{content:"";position:absolute;inset:0;background:radial-gradient(560px 240px at 50% 0%,rgba(56,207,255,.16),transparent 70%);pointer-events:none}
.cta-panel h2{position:relative;font-size:clamp(22px,2.4vw,32px);font-weight:700}
.cta-panel p{position:relative;margin:16px auto 0;max-width:640px;color:var(--muted);font-size:15.5px}
.cta-actions{position:relative;display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:30px}

/* 页脚 */
.site-footer{margin-top:48px;border-top:1px solid var(--stroke);background:rgba(10,17,34,.6);position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 40px}
.footer-brand p{margin-top:18px;color:var(--muted);font-size:14.5px;max-width:320px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:18px}
.footer-col ul{display:grid;gap:12px}
.footer-col a{color:var(--muted);font-size:14.5px;transition:color .2s ease}
.footer-col a:hover{color:var(--brand)}
.footer-col>p{margin-top:18px;color:var(--dim);font-size:13px}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;padding:22px 0 32px;border-top:1px solid var(--stroke);color:var(--dim);font-size:13px}

/* 浮动 CTA */
.float-cta{position:fixed;right:24px;bottom:24px;z-index:900;display:flex;align-items:center;gap:14px;padding:10px 10px 10px 18px;border-radius:999px;background:rgba(10,17,34,.88);border:1px solid var(--stroke);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);opacity:0;transform:translateY(14px);pointer-events:none;transition:opacity .3s ease,transform .3s ease}
.float-cta.is-visible{opacity:1;transform:none;pointer-events:auto}
.float-cta-text{font-size:13.5px;color:var(--muted);white-space:nowrap}

/* 响应式 */
@media (max-width:1279px){
  .card-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:1023px){
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .overview{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .nav-search{max-width:260px}
  .section{padding:76px 0}
}
@media (max-width:767px){
  body{padding-bottom:88px}
  .container{padding:0 20px}
  .nav-top{height:auto;flex-wrap:wrap;padding:12px 0;gap:12px}
  .logo-text{font-size:15.5px}
  .nav-search{order:3;flex:1 1 100%;max-width:none}
  .nav-actions{margin-left:auto}
  .channel{padding:10px 13px;font-size:13.5px}
  .page-hero{padding:48px 0 44px}
  .lede{font-size:15.5px}
  .section{padding:60px 0}
  .section-head{margin-bottom:32px}
  .card-grid{grid-template-columns:1fr}
  .entry-card{padding:20px}
  .faq-q{padding:18px 20px;font-size:15px}
  .faq-a-inner p{padding:0 20px 20px}
  .cta-panel{padding:48px 22px;border-radius:20px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:48px 0 32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .float-cta{left:0;right:0;bottom:0;border-radius:0;height:56px;padding:0 16px;justify-content:space-between;transform:translateY(100%);border-left:0;border-right:0;border-bottom:0}
  .float-cta.is-visible{transform:none}
  .float-cta-text{font-size:13px;overflow:hidden;text-overflow:ellipsis}
  .pager{flex-wrap:wrap;margin-top:32px}
}
@media (max-width:520px){
  .hero-cta .btn{width:100%}
  .cta-actions .btn{width:100%}
  .hero-meta{gap:10px 20px}
}

/* roulang page: category3 */
:root{
  --bg-0:#060A16;
  --bg-1:#0A1122;
  --bg-2:#0E1730;
  --surface:rgba(255,255,255,.045);
  --surface-2:rgba(255,255,255,.07);
  --stroke:rgba(120,190,255,.16);
  --stroke-strong:rgba(120,190,255,.32);
  --brand:#38CFFF;
  --brand-deep:#5A6CFF;
  --accent:#FF4D8D;
  --ok:#3EE6A8;
  --text:#E8EFFF;
  --muted:#9AACCB;
  --dim:#68799B;
  --radius:18px;
  --radius-sm:12px;
  --radius-pill:999px;
  --gap:24px;
  --section:96px;
  --glow:0 10px 30px -10px rgba(56,207,255,.55);
  --mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  font-weight:400;
  line-height:1.85;
  padding-bottom:96px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(120,190,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,190,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 50% 0%,#000 0%,rgba(0,0,0,.35) 55%,transparent 78%);
  mask-image:radial-gradient(circle at 50% 0%,#000 0%,rgba(0,0,0,.35) 55%,transparent 78%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(600px 420px at 6% -4%,rgba(56,207,255,.18),transparent 70%),
    radial-gradient(680px 480px at 96% 96%,rgba(255,77,141,.14),transparent 72%);
}
img{max-width:100%;display:block;border-radius:var(--radius-sm)}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:hover{color:#7BE0FF}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:8px}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:.2px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
input{font-family:inherit}
::selection{background:rgba(56,207,255,.28);color:#fff}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;position:relative;z-index:1}

/* ===== Header ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(6,10,22,.86);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--stroke);
}
.nav-top{
  display:flex;
  align-items:center;
  gap:24px;
  height:64px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--text);
  font-weight:700;
  letter-spacing:.4px;
}
.logo:hover{color:var(--text)}
.logo-mark{
  width:32px;height:32px;
  display:grid;place-items:center;
  border-radius:10px;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#04101F;
  font-size:16px;
  font-weight:700;
  box-shadow:0 6px 18px -8px rgba(56,207,255,.7);
}
.logo-text{font-size:17px;white-space:nowrap}
.nav-search{
  flex:1 1 auto;
  max-width:420px;
  display:flex;
  align-items:center;
  gap:10px;
  height:40px;
  padding:0 16px;
  border:1px solid var(--stroke);
  border-radius:var(--radius-pill);
  background:var(--surface);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px rgba(56,207,255,.12)}
.nav-search input{
  flex:1 1 auto;
  min-width:0;
  height:100%;
  border:none;
  background:transparent;
  color:var(--text);
  font-size:14px;
  outline:none;
}
.nav-search input::placeholder{color:var(--dim)}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto}

.nav-channels-wrap{
  position:relative;
  border-top:1px solid rgba(120,190,255,.09);
}
.nav-channels-wrap::before,
.nav-channels-wrap::after{
  content:"";
  position:absolute;
  top:0;bottom:0;
  width:24px;
  pointer-events:none;
  z-index:2;
}
.nav-channels-wrap::before{left:0;background:linear-gradient(90deg,rgba(6,10,22,.95),transparent)}
.nav-channels-wrap::after{right:0;background:linear-gradient(270deg,rgba(6,10,22,.95),transparent)}
.nav-channels{
  display:flex;
  align-items:center;
  gap:6px;
  height:48px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.nav-channels::-webkit-scrollbar{display:none}
.channel{
  flex:0 0 auto;
  padding:7px 16px;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  color:var(--muted);
  font-size:14px;
  white-space:nowrap;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.channel:hover{color:var(--text);background:transparent}
.channel.is-active{
  color:var(--text);
  border-color:var(--brand);
  background:rgba(56,207,255,.09);
  box-shadow:inset 0 0 18px -8px rgba(56,207,255,.7);
}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:500;
  line-height:1;
  border:1px solid transparent;
  transition:transform .18s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-primary{
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);
  color:#04101F;
  font-weight:700;
  box-shadow:var(--glow);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);color:#04101F}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  border-color:var(--stroke-strong);
  color:var(--text);
  background:transparent;
}
.btn-ghost:hover{border-color:var(--brand);color:#fff;transform:translateY(-1px)}
.btn-glass{
  background:var(--surface);
  border-color:var(--stroke);
  color:var(--text);
}
.btn-glass:hover{background:var(--surface-2);border-color:var(--stroke-strong);transform:translateY(-1px)}
.btn[disabled],.btn.is-disabled{opacity:.4;box-shadow:none;pointer-events:none}

/* ===== Hero ===== */
.page-hero{
  position:relative;
  scroll-margin-top:128px;
  padding:64px 0 56px;
  overflow:hidden;
  border-bottom:1px solid var(--stroke);
}
.page-hero-bg{
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  opacity:.28;
  z-index:0;
}
.page-hero-veil{
  position:absolute;
  inset:0;
  background:linear-gradient(120deg,rgba(6,10,22,.96) 0%,rgba(10,17,34,.86) 45%,rgba(14,23,48,.72) 100%);
  z-index:0;
}
.page-hero .container{position:relative;z-index:1}
.crumbs{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  margin-bottom:20px;
}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--brand)}
.crumbs span.sep{color:var(--dim)}
.crumbs .current{color:var(--text)}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--radius-pill);
  border:1px solid var(--stroke);
  background:var(--surface);
  color:var(--brand);
  font-size:13px;
  letter-spacing:.6px;
  margin-bottom:20px;
}
.page-hero h1{
  font-size:clamp(28px,4.2vw,52px);
  line-height:1.15;
  max-width:16em;
}
.hero-lead{
  margin-top:20px;
  max-width:660px;
  color:var(--muted);
  font-size:16px;
  line-height:1.9;
}
.hero-quick{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:32px;
}
.quick-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 18px;
  border-radius:var(--radius-pill);
  border:1px solid var(--stroke);
  background:rgba(255,255,255,.04);
  color:var(--muted);
  font-size:14px;
  transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.quick-pill:hover{border-color:var(--brand);color:#fff;transform:translateY(-1px)}
.quick-pill i{width:6px;height:6px;border-radius:50%;background:var(--brand);display:inline-block}

/* ===== Section basics ===== */
.section{padding:var(--section) 0;scroll-margin-top:128px}
.section-head{max-width:760px;margin-bottom:48px}
.section-head h2{
  font-size:clamp(22px,2.4vw,34px);
  position:relative;
  padding-left:16px;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:.18em;bottom:.18em;
  width:3px;
  border-radius:3px;
  background:var(--brand);
  box-shadow:0 0 12px rgba(56,207,255,.75);
}
.section-head p{margin-top:16px;color:var(--muted);font-size:15px}

/* ===== Help layout ===== */
.help-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 260px;
  gap:48px;
  align-items:start;
}
.help-main{min-width:0}
.help-aside{position:sticky;top:128px}
.index-card{
  padding:24px;
  border-radius:var(--radius);
  border:1px solid var(--stroke);
  background:var(--surface);
}
.index-card h3{font-size:15px;font-weight:500;color:var(--muted);letter-spacing:.8px;margin-bottom:16px}
.index-list li+li{margin-top:4px}
.index-list a{
  display:block;
  padding:8px 12px;
  border-radius:10px;
  color:var(--muted);
  font-size:14px;
  border-left:2px solid transparent;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.index-list a:hover,
.index-list a.is-active{
  color:var(--text);
  background:rgba(56,207,255,.08);
  border-left-color:var(--brand);
}
.index-note{margin-top:18px;font-size:13px;color:var(--dim);line-height:1.8}

/* ===== Accordion groups ===== */
.acc-group + .acc-group{margin-top:40px}
.acc-group-head{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:18px;
}
.acc-group-no{
  font-family:var(--mono);
  font-size:13px;
  color:var(--brand);
  padding:4px 10px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(56,207,255,.35);
  background:rgba(56,207,255,.08);
}
.acc-group-head h3{font-size:19px;font-weight:500}
.acc-list{
  border:1px solid var(--stroke);
  border-radius:var(--radius);
  background:var(--surface);
  overflow:hidden;
}
.acc-item + .acc-item{border-top:1px solid var(--stroke)}
.acc-head{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 24px;
  text-align:left;
  color:var(--text);
  font-size:16px;
  font-weight:500;
  transition:background .2s ease,color .2s ease;
}
.acc-head:hover{background:rgba(255,255,255,.03)}
.acc-icon{
  flex:0 0 auto;
  position:relative;
  width:16px;height:16px;
}
.acc-icon::before,
.acc-icon::after{
  content:"";
  position:absolute;
  background:var(--brand);
  border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
.acc-icon::before{left:0;right:0;top:7px;height:2px}
.acc-icon::after{top:0;bottom:0;left:7px;width:2px}
.acc-item.is-open .acc-icon::after{transform:rotate(90deg);opacity:0}
.acc-body{
  max-height:0;
  overflow:hidden;
  transition:max-height .28s ease;
}
.acc-body-inner{
  padding:0 24px 22px;
  color:var(--muted);
  font-size:15px;
  line-height:1.9;
}
.acc-body-inner strong{color:var(--text);font-weight:500}

/* ===== Table ===== */
.table-wrap{
  margin-top:24px;
  border:1px solid var(--stroke);
  border-radius:var(--radius);
  background:var(--surface);
  overflow:hidden;
}
.table-title{
  padding:16px 24px;
  font-size:14px;
  color:var(--muted);
  border-bottom:1px solid var(--stroke);
  letter-spacing:.4px;
}
.data-table{
  width:100%;
  border-collapse:collapse;
  font-size:14.5px;
}
.data-table caption{
  caption-side:top;
  text-align:left;
  padding:16px 24px 0;
  color:var(--dim);
  font-size:13px;
}
.data-table thead th{
  text-align:left;
  padding:14px 24px;
  font-size:13px;
  font-weight:500;
  color:var(--dim);
  letter-spacing:.5px;
  border-bottom:1px solid var(--stroke);
  background:rgba(255,255,255,.02);
}
.data-table tbody td{
  padding:16px 24px;
  color:var(--muted);
  border-bottom:1px solid rgba(120,190,255,.08);
  line-height:1.75;
  vertical-align:top;
}
.data-table tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
.data-table tbody tr:last-child td{border-bottom:none}
.data-table tbody td:first-child{color:var(--text);font-weight:500}
.data-table tbody tr:hover{background:rgba(56,207,255,.05)}

/* ===== Steps ===== */
.steps{margin-top:24px;display:grid;gap:16px}
.step{
  display:grid;
  grid-template-columns:56px minmax(0,1fr);
  gap:20px;
  padding:22px 24px;
  border-radius:var(--radius);
  border:1px solid var(--stroke);
  background:var(--surface);
  transition:border-color .2s ease,transform .2s ease;
}
.step:hover{border-color:var(--stroke-strong);transform:translateY(-2px)}
.step-no{
  width:44px;height:44px;
  display:grid;place-items:center;
  border-radius:14px;
  background:rgba(56,207,255,.1);
  border:1px solid rgba(56,207,255,.32);
  color:var(--brand);
  font-family:var(--mono);
  font-size:15px;
}
.step h4{font-size:16px;font-weight:500;margin-bottom:8px}
.step p{color:var(--muted);font-size:14.5px;line-height:1.85}
.step .meta{
  margin-top:10px;
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--dim);
  font-family:var(--mono);
}

/* ===== Feature block with image ===== */
.feature-block{
  display:grid;
  grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);
  gap:32px;
  align-items:center;
  margin-top:24px;
  padding:28px;
  border-radius:var(--radius);
  border:1px solid var(--stroke);
  background:var(--surface);
}
.feature-block img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border:1px solid var(--stroke);
}
.feature-block h4{font-size:18px;font-weight:500;margin-bottom:12px}
.feature-block p{color:var(--muted);font-size:14.5px}
.check-list{margin-top:18px;display:grid;gap:10px}
.check-list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  color:var(--muted);
  font-size:14.5px;
}
.check-list li::before{
  content:"";
  flex:0 0 auto;
  width:7px;height:7px;
  margin-top:9px;
  border-radius:50%;
  background:var(--ok);
  box-shadow:0 0 10px rgba(62,230,168,.6);
}

/* ===== Tag pills ===== */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{
  display:inline-flex;
  align-items:center;
  padding:6px 14px;
  border-radius:var(--radius-pill);
  background:rgba(56,207,255,.12);
  color:var(--brand);
  font-size:13px;
  border:1px solid rgba(56,207,255,.2);
}

/* ===== FAQ ===== */
.faq-list{
  display:grid;
  gap:0;
  border:1px solid var(--stroke);
  border-radius:var(--radius);
  background:var(--surface);
  overflow:hidden;
}
.faq-item + .faq-item{border-top:1px solid var(--stroke)}

/* ===== CTA ===== */
.cta-section{padding:0 0 var(--section)}
.cta-panel{
  position:relative;
  overflow:hidden;
  text-align:center;
  padding:64px 40px;
  border-radius:26px;
  border:1px solid var(--stroke-strong);
  background:linear-gradient(140deg,rgba(56,207,255,.1),rgba(255,77,141,.08));
  backdrop-filter:blur(12px);
}
.cta-panel h2{font-size:clamp(22px,2.4vw,32px)}
.cta-panel p{margin:18px auto 30px;max-width:560px;color:var(--muted);font-size:15px}
.cta-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap}

/* ===== Footer ===== */
.site-footer{
  position:relative;
  z-index:1;
  border-top:1px solid var(--stroke);
  background:rgba(10,17,34,.7);
  padding:72px 0 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand p{
  margin-top:18px;
  color:var(--muted);
  font-size:14px;
  line-height:1.85;
  max-width:320px;
}
.footer-col h4{
  font-size:14px;
  font-weight:500;
  color:var(--text);
  letter-spacing:.8px;
  margin-bottom:18px;
}
.footer-col ul li+li{margin-top:10px}
.footer-col ul a{color:var(--muted);font-size:14px}
.footer-col ul a:hover{color:var(--brand)}
.footer-col p{margin-top:16px;color:var(--dim);font-size:13px;line-height:1.8}
.footer-bottom{
  margin-top:56px;
  padding-top:24px;
  border-top:1px solid rgba(120,190,255,.1);
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  color:var(--dim);
  font-size:13px;
}

/* ===== Float CTA ===== */
.float-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:900;
  display:flex;
  align-items:center;
  gap:14px;
  padding:10px 12px 10px 20px;
  border-radius:var(--radius-pill);
  border:1px solid var(--stroke-strong);
  background:rgba(10,17,34,.92);
  backdrop-filter:blur(16px);
  box-shadow:0 18px 40px -20px rgba(0,0,0,.9);
  opacity:0;
  transform:translateY(16px);
  pointer-events:none;
  transition:opacity .3s ease,transform .3s ease;
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta-text{font-size:13.5px;color:var(--muted);white-space:nowrap}

/* ===== Responsive ===== */
@media (max-width:1023px){
  .help-layout{grid-template-columns:minmax(0,1fr);gap:0}
  .help-aside{position:static;margin-bottom:40px;order:-1}
  .index-card{padding:20px}
  .index-list{display:flex;flex-wrap:wrap;gap:8px}
  .index-list li+li{margin-top:0}
  .index-list a{border-left:none;border:1px solid var(--stroke);border-radius:var(--radius-pill);padding:7px 14px}
  .index-list a:hover,.index-list a.is-active{border-color:var(--brand);background:rgba(56,207,255,.1)}
  .feature-block{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{padding-bottom:88px}
  .container{padding:0 20px}
  :root{--section:64px}
  .section{padding:64px 0}
  .nav-top{height:60px;gap:14px}
  .nav-search{display:none}
  .logo-text{font-size:15px}
  .nav-channels{height:46px}
  .page-hero{padding:44px 0 40px}
  .hero-lead{font-size:15px}
  .acc-head{padding:16px 18px;font-size:15px}
  .acc-body-inner{padding:0 18px 18px;font-size:14.5px}
  .step{grid-template-columns:44px minmax(0,1fr);gap:14px;padding:18px}
  .step-no{width:38px;height:38px;border-radius:12px;font-size:14px}
  .feature-block{padding:20px}
  .cta-panel{padding:40px 22px;border-radius:20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .float-cta{
    left:0;right:0;bottom:0;
    border-radius:0;
    border-left:none;border-right:none;border-bottom:none;
    height:56px;
    padding:0 16px;
    justify-content:space-between;
  }
  .float-cta-text{font-size:13px;overflow:hidden;text-overflow:ellipsis}
  .data-table thead{display:none}
  .data-table,
  .data-table tbody,
  .data-table tr,
  .data-table td{display:block;width:100%}
  .data-table tbody tr{
    border-bottom:1px solid var(--stroke);
    padding:14px 18px;
    background:transparent;
  }
  .data-table tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
  .data-table tbody td{
    display:flex;
    justify-content:space-between;
    gap:18px;
    border:none;
    padding:6px 0;
  }
  .data-table tbody td::before{
    content:attr(data-label);
    flex:0 0 auto;
    color:var(--dim);
    font-size:13px;
    font-weight:400;
  }
  .data-table tbody td:first-child{font-size:15px}
}
@media (max-width:520px){
  .logo-text{max-width:132px;overflow:hidden;text-overflow:ellipsis}
  .page-hero h1{font-size:26px}
  .hero-quick{gap:8px}
  .quick-pill{font-size:13px;padding:8px 14px}
  .section-head{margin-bottom:32px}
  .acc-group + .acc-group{margin-top:32px}
}

/* roulang page: category4 */
:root{
  --bg-0:#060A16;
  --bg-1:#0A1122;
  --bg-2:#0E1730;
  --surface:rgba(255,255,255,.045);
  --surface-2:rgba(255,255,255,.07);
  --stroke:rgba(120,190,255,.16);
  --stroke-strong:rgba(120,190,255,.34);
  --brand:#38CFFF;
  --brand-2:#7A6BFF;
  --accent:#FF4D8D;
  --ok:#3EE6A8;
  --text:#E8EFFF;
  --muted:#9AACCB;
  --dim:#68799B;
  --radius:18px;
  --radius-sm:12px;
  --pill:999px;
  --container:1240px;
  --shadow-glow:0 10px 30px -10px rgba(56,207,255,.55);
  --shadow-card:0 18px 40px -28px rgba(0,0,0,.9);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 620px at 10% -6%, rgba(56,207,255,.16), transparent 62%),
    radial-gradient(820px 560px at 90% 6%, rgba(255,77,141,.13), transparent 64%),
    linear-gradient(180deg,var(--bg-0) 0%,var(--bg-1) 38%,var(--bg-0) 100%);
  background-attachment:fixed;
  padding-bottom:96px;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:
    linear-gradient(rgba(120,190,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,190,255,.045) 1px, transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-sm)}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:#8FE2FF}
button,input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:.01em}
p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;box-shadow:0 0 0 4px rgba(56,207,255,.18);border-radius:6px}
::selection{background:rgba(56,207,255,.3);color:#fff}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
  position:relative;
  z-index:1;
}

/* ============ 双层导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(6,10,22,.82);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--stroke);
}
.nav-top{
  height:64px;
  display:flex;
  align-items:center;
  gap:24px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--text);
  font-weight:700;
}
.logo:hover{color:var(--text)}
.logo-mark{
  width:34px;
  height:34px;
  border-radius:11px;
  display:grid;
  place-items:center;
  font-size:16px;
  font-weight:700;
  color:#04121F;
  background:linear-gradient(135deg,var(--brand),#7FE3FF 55%,var(--brand-2));
  box-shadow:0 8px 22px -12px rgba(56,207,255,.9);
}
.logo-text{
  font-size:17px;
  letter-spacing:.02em;
  white-space:nowrap;
}
.nav-search{
  flex:1 1 auto;
  max-width:420px;
  display:flex;
  align-items:center;
  gap:10px;
  height:40px;
  padding:0 14px;
  border-radius:var(--pill);
  background:var(--surface);
  border:1px solid var(--stroke);
  transition:border-color .2s ease, box-shadow .2s ease;
}
.nav-search:focus-within{
  border-color:rgba(56,207,255,.6);
  box-shadow:0 0 0 4px rgba(56,207,255,.12);
}
.nav-search input{
  flex:1 1 auto;
  min-width:0;
  border:0;
  outline:none;
  background:transparent;
  font-size:14px;
  color:var(--text);
}
.nav-search input::placeholder{color:var(--dim)}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto}

/* 第二行频道 */
.nav-channels-wrap{
  position:relative;
  border-top:1px solid rgba(120,190,255,.08);
}
.nav-channels-wrap::before,
.nav-channels-wrap::after{
  content:"";
  position:absolute;
  top:0;
  bottom:0;
  width:24px;
  pointer-events:none;
  z-index:2;
}
.nav-channels-wrap::before{left:0;background:linear-gradient(90deg,rgba(6,10,22,.95),transparent)}
.nav-channels-wrap::after{right:0;background:linear-gradient(270deg,rgba(6,10,22,.95),transparent)}
.nav-channels{
  height:48px;
  display:flex;
  align-items:center;
  gap:8px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.nav-channels::-webkit-scrollbar{display:none}
.channel{
  flex:0 0 auto;
  padding:6px 14px;
  border-radius:var(--pill);
  font-size:14px;
  color:var(--muted);
  border:1px solid transparent;
  white-space:nowrap;
  transition:color .2s ease, border-color .2s ease, background-color .2s ease;
}
.channel:hover{color:var(--text)}
.channel.is-active{
  color:#DFF6FF;
  border-color:var(--stroke-strong);
  background:radial-gradient(120px 40px at 50% 120%, rgba(56,207,255,.22), rgba(56,207,255,.05));
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border:1px solid transparent;
  border-radius:var(--pill);
  padding:12px 22px;
  font-size:15px;
  font-weight:500;
  cursor:pointer;
  text-align:center;
  white-space:nowrap;
  transition:transform .18s ease, background-color .2s ease, border-color .2s ease, box-shadow .2s ease, color .2s ease;
}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-primary{
  color:#04121F;
  background:linear-gradient(135deg,#38CFFF 0%, #63B6FF 45%, #7A6BFF 100%);
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{color:#04121F;filter:brightness(1.08);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-secondary{
  color:var(--text);
  background:var(--surface);
  border-color:var(--stroke);
}
.btn-secondary:hover{color:#fff;background:var(--surface-2);border-color:var(--stroke-strong)}
.btn-secondary:active{transform:translateY(1px)}
.btn-ghost{
  color:var(--muted);
  background:transparent;
  border-color:var(--stroke-strong);
}
.btn-ghost:hover{color:var(--text);border-color:var(--brand);background:rgba(56,207,255,.06)}
.btn[disabled],.btn.is-disabled{opacity:.4;box-shadow:none;cursor:not-allowed}

/* ============ 通用板块 ============ */
main{position:relative;z-index:1}
.section{
  padding-top:96px;
  scroll-margin-top:128px;
}
.section--tight{padding-top:64px}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:32px;
  flex-wrap:wrap;
}
.section-head h2{font-size:clamp(22px,2.4vw,34px)}
.section-head p{color:var(--muted);font-size:15px;margin-top:10px;max-width:620px}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:.06em;
  color:var(--brand);
  padding:5px 12px;
  border-radius:var(--pill);
  background:rgba(56,207,255,.1);
  border:1px solid rgba(56,207,255,.28);
  margin-bottom:16px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--ok);box-shadow:0 0 8px var(--ok)}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  padding:72px 0 0;
  scroll-margin-top:128px;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:100%;
  background-image:linear-gradient(180deg, rgba(6,10,22,.72), rgba(6,10,22,.94)), url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center right;
  opacity:.55;
  pointer-events:none;
  z-index:0;
}
.hero-panel{
  position:relative;
  z-index:1;
  max-width:860px;
  padding:40px;
  border-radius:24px;
  background:var(--surface);
  border:1px solid var(--stroke);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--dim);
  margin-bottom:20px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span{color:var(--dim)}
.page-hero h1{
  font-size:clamp(28px,4.2vw,52px);
  line-height:1.15;
  font-weight:700;
  margin-bottom:20px;
}
.page-hero h1 em{
  font-style:normal;
  background:linear-gradient(120deg,#9BE7FF,#38CFFF 40%,#A99BFF);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-lead{
  color:var(--muted);
  font-size:16px;
  line-height:1.9;
  max-width:720px;
}
.hero-lead + .hero-lead{margin-top:12px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}
.hero-note{
  margin-top:22px;
  display:flex;
  gap:22px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--dim);
}
.hero-note span{display:inline-flex;align-items:center;gap:7px}
.hero-note i{width:6px;height:6px;border-radius:50%;background:var(--brand);display:inline-block}

/* ============ 统计大数字 ============ */
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
}
.stat-card{
  padding:28px 26px;
  border-radius:var(--radius);
  background:linear-gradient(160deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
  border:1px solid var(--stroke);
  position:relative;
  overflow:hidden;
  transition:transform .22s ease, border-color .22s ease;
}
.stat-card::after{
  content:"";
  position:absolute;
  top:-40px;
  right:-40px;
  width:120px;
  height:120px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(56,207,255,.22), transparent 68%);
  pointer-events:none;
}
.stat-card:hover{transform:translateY(-2px);border-color:var(--stroke-strong)}
.stat-num{
  font-family:var(--font-mono);
  font-size:clamp(30px,3.4vw,42px);
  font-weight:700;
  line-height:1.1;
  color:#CFF3FF;
  text-shadow:0 0 24px rgba(56,207,255,.55);
}
.stat-num small{font-size:15px;font-family:var(--font-cn);font-weight:500;color:var(--muted);margin-left:6px;text-shadow:none}
.stat-label{
  margin-top:12px;
  font-size:14px;
  color:var(--text);
}
.stat-desc{
  margin-top:6px;
  font-size:13px;
  color:var(--dim);
  line-height:1.7;
}

/* ============ 榜单列表 ============ */
.rank-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 340px;
  gap:32px;
  align-items:start;
}
.rank-list{
  border-radius:var(--radius);
  background:var(--surface);
  border:1px solid var(--stroke);
  overflow:hidden;
}
.rank-item{
  display:grid;
  grid-template-columns:52px minmax(0,1fr) auto;
  gap:18px;
  align-items:center;
  padding:20px 24px;
  border-bottom:1px solid rgba(120,190,255,.08);
  transition:background-color .2s ease, transform .2s ease;
}
.rank-item:last-child{border-bottom:0}
.rank-item:hover{background:rgba(56,207,255,.05)}
.rank-badge{
  width:44px;
  height:44px;
  border-radius:13px;
  display:grid;
  place-items:center;
  font-family:var(--font-mono);
  font-size:16px;
  font-weight:700;
  color:#D5EBFF;
  border:1px solid rgba(56,207,255,.34);
  background:linear-gradient(140deg, rgba(56,207,255,.3), rgba(122,107,255,.16));
}
.b1{background:linear-gradient(140deg, rgba(56,207,255,.34), rgba(122,107,255,.16));border-color:rgba(56,207,255,.5)}
.b2{background:linear-gradient(140deg, rgba(72,190,255,.28), rgba(122,107,255,.16));border-color:rgba(72,190,255,.42)}
.b3{background:linear-gradient(140deg, rgba(88,168,255,.26), rgba(122,107,255,.16));border-color:rgba(88,168,255,.38)}
.b4{background:linear-gradient(140deg, rgba(102,150,255,.24), rgba(122,107,255,.16));border-color:rgba(102,150,255,.34)}
.b5{background:linear-gradient(140deg, rgba(112,136,255,.22), rgba(122,107,255,.14));border-color:rgba(112,136,255,.3)}
.b6{background:linear-gradient(140deg, rgba(120,122,255,.2), rgba(122,107,255,.12));border-color:rgba(120,122,255,.28)}
.b7{background:linear-gradient(140deg, rgba(126,112,255,.18), rgba(122,107,255,.1));border-color:rgba(126,112,255,.26)}
.b8{background:linear-gradient(140deg, rgba(132,102,255,.16), rgba(122,107,255,.1));border-color:rgba(132,102,255,.24)}
.rank-main{min-width:0}
.rank-name{
  font-size:16px;
  font-weight:500;
  color:var(--text);
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
}
.rank-meta{
  margin-top:6px;
  font-size:13px;
  color:var(--dim);
  display:flex;
  gap:14px;
  flex-wrap:wrap;
}
.tag{
  display:inline-block;
  padding:2px 10px;
  border-radius:var(--pill);
  font-size:12px;
  line-height:1.7;
  color:#9FE6FF;
  background:rgba(56,207,255,.12);
  border:1px solid rgba(56,207,255,.24);
}
.tag--accent{color:#FFB4D2;background:rgba(255,77,141,.12);border-color:rgba(255,77,141,.26)}
.rank-value{
  text-align:right;
  font-family:var(--font-mono);
  font-size:17px;
  color:#DCF2FF;
  white-space:nowrap;
}
.rank-delta{
  display:block;
  font-family:var(--font-cn);
  font-size:12px;
  margin-top:4px;
  color:var(--dim);
}
.delta-up{color:var(--ok)}
.delta-down{color:var(--accent)}

/* 侧栏卡片 */
.side-card{
  padding:26px;
  border-radius:var(--radius);
  background:var(--surface);
  border:1px solid var(--stroke);
  box-shadow:var(--shadow-card);
}
.side-card + .side-card{margin-top:24px}
.side-card h3{font-size:17px;margin-bottom:14px}
.side-card p{font-size:14px;color:var(--muted);line-height:1.85}
.side-list{margin-top:14px}
.side-list li{
  font-size:14px;
  color:var(--muted);
  padding:9px 0;
  border-top:1px solid rgba(120,190,255,.1);
  display:flex;
  justify-content:space-between;
  gap:12px;
}
.side-list li:first-child{border-top:0}
.side-list b{color:var(--text);font-weight:500}
.side-figure{margin-top:18px}
.side-figure img{
  width:100%;
  height:auto;
  aspect-ratio:16/9;
  object-fit:cover;
  border:1px solid var(--stroke);
}
.side-figure figcaption{
  font-size:13px;
  color:var(--dim);
  margin-top:10px;
  line-height:1.7;
}

/* ============ 对比表 ============ */
.table-wrap{
  border-radius:var(--radius);
  border:1px solid var(--stroke);
  background:var(--surface);
  overflow:hidden;
}
.data-table{
  width:100%;
  border-collapse:collapse;
  font-size:14px;
}
.data-table thead th{
  font-size:13px;
  font-weight:500;
  color:var(--dim);
  text-align:left;
  padding:16px 22px;
  background:rgba(255,255,255,.03);
  border-bottom:1px solid var(--stroke);
  white-space:nowrap;
}
.data-table tbody td{
  padding:16px 22px;
  height:52px;
  border-bottom:1px solid rgba(120,190,255,.08);
  color:var(--muted);
  vertical-align:middle;
}
.data-table tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
.data-table tbody tr:hover{background:rgba(56,207,255,.05)}
.data-table tbody td:first-child{color:var(--text);font-weight:500}
.data-table tbody tr:last-child td{border-bottom:0}
.note-line{
  margin-top:16px;
  font-size:13px;
  color:var(--dim);
  line-height:1.8;
}

/* ============ 口径说明卡组 ============ */
.method-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.method-card{
  padding:26px;
  border-radius:var(--radius);
  background:var(--surface);
  border:1px solid var(--stroke);
  transition:transform .22s ease, border-color .22s ease;
}
.method-card:hover{transform:translateY(-2px);border-color:var(--stroke-strong)}
.method-card .idx{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--brand);
  letter-spacing:.08em;
}
.method-card h3{font-size:17px;margin:10px 0 10px}
.method-card p{font-size:14px;color:var(--muted);line-height:1.85}

/* ============ FAQ ============ */
.faq-list{
  border-radius:var(--radius);
  border:1px solid var(--stroke);
  background:var(--surface);
  overflow:hidden;
}
.faq-item{border-bottom:1px solid rgba(120,190,255,.1)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 26px;
  background:transparent;
  border:0;
  cursor:pointer;
  text-align:left;
  font-size:16px;
  font-weight:500;
  color:var(--text);
  transition:background-color .2s ease;
}
.faq-q:hover{background:rgba(56,207,255,.05)}
.faq-icon{
  flex:0 0 auto;
  width:22px;
  height:22px;
  position:relative;
  transition:transform .25s ease;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  background:var(--brand);
  border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px;transition:opacity .2s ease}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a p{
  padding:0 26px 22px;
  font-size:15px;
  line-height:1.9;
  color:var(--muted);
}

/* ============ 收尾 CTA ============ */
.cta-panel{
  text-align:center;
  padding:64px 40px;
  border-radius:24px;
  background:
    radial-gradient(600px 260px at 50% -30%, rgba(56,207,255,.18), transparent 70%),
    rgba(255,255,255,.05);
  border:1px solid var(--stroke);
  box-shadow:var(--shadow-card);
}
.cta-panel h2{font-size:clamp(22px,2.4vw,32px);margin-bottom:16px}
.cta-panel p{color:var(--muted);font-size:15px;max-width:620px;margin:0 auto 28px}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ============ 浮动 CTA ============ */
.floating-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:900;
  display:flex;
  align-items:center;
  gap:14px;
  padding:10px 12px 10px 20px;
  border-radius:var(--pill);
  background:rgba(10,17,34,.92);
  border:1px solid var(--stroke);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:0 18px 40px -22px rgba(0,0,0,.95);
  opacity:0;
  transform:translateY(14px);
  pointer-events:none;
  transition:opacity .3s ease, transform .3s ease;
}
.floating-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto}
.floating-cta span{font-size:13px;color:var(--muted);white-space:nowrap}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:96px;
  padding-top:64px;
  border-top:1px solid var(--stroke);
  background:rgba(6,10,22,.6);
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand p{
  margin-top:16px;
  font-size:14px;
  color:var(--dim);
  line-height:1.85;
  max-width:320px;
}
.footer-col h4{
  font-size:14px;
  font-weight:500;
  color:var(--text);
  margin-bottom:16px;
}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:14px;color:var(--muted)}
.footer-col ul li a:hover{color:var(--brand)}
.footer-col p{margin-top:14px;font-size:13px;color:var(--dim);line-height:1.8}
.footer-bottom{
  margin-top:56px;
  padding:22px 0 28px;
  border-top:1px solid rgba(120,190,255,.1);
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--dim);
}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .rank-layout{grid-template-columns:minmax(0,1fr) 300px}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1024px){
  .rank-layout{grid-template-columns:minmax(0,1fr)}
  .method-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .nav-search{max-width:280px}
}
@media (max-width:768px){
  .container{padding-left:20px;padding-right:20px}
  .section{padding-top:64px}
  .nav-search{display:none}
  .logo-text{font-size:16px}
  .page-hero{padding-top:48px}
  .hero-panel{padding:26px}
  .hero-note{gap:14px}
  .stat-grid{grid-template-columns:1fr;gap:16px}
  .method-grid{grid-template-columns:1fr;gap:16px}
  .rank-item{grid-template-columns:44px minmax(0,1fr);gap:14px;padding:18px}
  .rank-value{grid-column:2;text-align:left;margin-top:4px}
  .data-table thead{display:none}
  .data-table,.data-table tbody,.data-table tr,.data-table td{display:block;width:100%}
  .data-table tbody tr{
    padding:14px 18px;
    border-bottom:1px solid rgba(120,190,255,.12);
    height:auto;
  }
  .data-table tbody td{
    display:flex;
    justify-content:space-between;
    gap:16px;
    padding:8px 0;
    height:auto;
    border-bottom:0;
  }
  .data-table tbody td::before{
    content:attr(data-label);
    color:var(--dim);
    font-size:13px;
    flex:0 0 auto;
  }
  .cta-panel{padding:44px 22px}
  .floating-cta{
    right:12px;
    left:12px;
    bottom:12px;
    justify-content:space-between;
    padding:8px 10px 8px 16px;
  }
  .floating-cta span{display:none}
  .floating-cta .btn{width:100%}
  body{padding-bottom:88px}
}
@media (max-width:520px){
  .nav-top{gap:12px;height:60px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
}