/* roulang page: index */
:root{
  --bg-base:#060913;
  --bg-deep:#0A0F1F;
  --surface-1:#0E1428;
  --surface-2:#151D38;
  --surface-3:#1C2745;
  --brand:#7A5CFF;
  --brand-deep:#4B33C4;
  --brand-soft:rgba(122,92,255,.14);
  --accent:#22D3C5;
  --cta:#FF7A45;
  --success:#35D07F;
  --warning:#FFB13D;
  --danger:#FF5C7A;
  --text-1:#E9EDFA;
  --text-2:#A8B2CE;
  --text-3:#6E7899;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(122,92,255,.38);
  --radius-card:18px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow-card:0 24px 48px -28px rgba(0,0,0,.75);
  --glow-brand:0 0 0 1px rgba(122,92,255,.45),0 14px 34px -14px rgba(122,92,255,.7);
  --glow-cta:0 0 0 1px rgba(255,122,69,.45),0 14px 34px -14px rgba(255,122,69,.65);
  --ease:cubic-bezier(.22,.61,.36,1);
  --glass:linear-gradient(160deg,rgba(122,92,255,.10),rgba(34,211,197,.045));
  --font:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{line-height:1.3;font-weight:700}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
::selection{background:rgba(122,92,255,.35)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0;border-top:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.eyebrow{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--accent);
  margin-bottom:12px;
}
.section-head h2{font-size:32px;line-height:1.3;font-weight:700}
.section-head p.lead{color:var(--text-2);font-size:15px;max-width:560px;margin-top:10px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease),color .22s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--glow-brand)}
.btn-primary:hover{background:#6a4bf5;transform:translateY(-2px)}
.btn-cta{background:var(--cta);color:#1a0d05;box-shadow:var(--glow-cta)}
.btn-cta:hover{background:#ff8c5e;transform:translateY(-2px)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text-1)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);transform:translateY(-2px)}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}
.text-link{color:var(--accent);font-size:15px;position:relative;padding-bottom:2px}
.text-link::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--brand);transition:width .24s var(--ease)}
.text-link:hover::after{width:100%}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:1;padding:5px 10px;border-radius:var(--radius-pill);
  border:1px solid rgba(34,211,197,.42);background:rgba(34,211,197,.10);color:var(--accent);
}
.badge-brand{border-color:var(--line-strong);background:var(--brand-soft);color:#c3b6ff}
.tag{
  display:inline-flex;align-items:center;font-size:12px;line-height:1;
  padding:5px 10px;border-radius:var(--radius-pill);
  background:var(--surface-2);color:var(--text-2);border:1px solid var(--line);
}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:transparent;transition:background-color .24s var(--ease),backdrop-filter .24s var(--ease),border-color .24s var(--ease);border-bottom:1px solid transparent}
.site-header.is-scrolled{background:rgba(6,9,19,.78);backdrop-filter:blur(14px);border-bottom-color:var(--line)}
.brand-row{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{width:34px;height:34px;flex-shrink:0}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.brand-row .spacer{flex:1}
.icon-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--radius-pill);border:1px solid var(--line);background:transparent;color:var(--text-2);
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.icon-btn:hover{color:var(--text-1);border-color:var(--line-strong);background:var(--brand-soft)}
.brand-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;width:44px;height:44px;border-radius:var(--radius-sm);border:1px solid var(--line);background:transparent;color:var(--text-1);cursor:pointer}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;margin:4px auto;border-radius:2px;transition:transform .22s var(--ease)}
.channel-row{border-top:1px solid var(--line)}
.channel-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:48px}
.channel-nav{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none}
.channel-nav::-webkit-scrollbar{display:none}
.channel-nav a{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:var(--radius-pill);
  font-size:14px;color:var(--text-2);position:relative;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.channel-nav a:hover{color:var(--text-1);background:var(--brand-soft)}
.channel-nav a.is-active{color:var(--text-1);background:var(--brand-soft);font-weight:600}
.channel-nav a.is-active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 12px rgba(122,92,255,.9);
}
.channel-status{font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:8px;white-space:nowrap}
.dot{width:7px;height:7px;border-radius:50%;background:var(--success);box-shadow:0 0 10px rgba(53,208,127,.8)}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  min-height:min(88vh,720px);
  display:flex;align-items:center;
  padding:72px 0 88px;
  background:
    radial-gradient(900px 460px at 12% 8%,rgba(122,92,255,.18),transparent 62%),
    radial-gradient(760px 420px at 88% 78%,rgba(34,211,197,.13),transparent 64%),
    linear-gradient(180deg,var(--bg-deep),var(--bg-base));
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(720px 460px at 45% 40%,#000 30%,transparent 78%);
  -webkit-mask-image:radial-gradient(720px 460px at 45% 40%,#000 30%,transparent 78%);
}
.hero-grid{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(30px,5.2vw,54px);line-height:1.18;font-weight:800;margin:18px 0 20px}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero-sub{font-size:17px;line-height:1.85;color:var(--text-2);max-width:36em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{display:flex;flex-wrap:wrap;gap:0;margin-top:44px;border-top:1px solid var(--line);padding-top:22px}
.hero-stats div{padding-right:26px;margin-right:26px;border-right:1px solid var(--line)}
.hero-stats div:last-child{border-right:0;margin-right:0;padding-right:0}
.hero-stats b{display:block;font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:24px;font-weight:700;color:var(--text-1)}
.hero-stats span{font-size:12px;color:var(--text-3)}
.hero-media{position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line-strong);box-shadow:var(--shadow-card)}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,9,19,.05),rgba(6,9,19,.72))}
.hero-float{
  position:absolute;left:22px;bottom:22px;z-index:2;
  padding:16px 18px;border-radius:14px;
  background:linear-gradient(160deg,rgba(122,92,255,.16),rgba(34,211,197,.06));
  border:1px solid rgba(255,255,255,.10);backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
}
.hero-float b{display:block;font-family:var(--mono);font-size:22px;font-variant-numeric:tabular-nums;color:var(--accent)}
.hero-float span{font-size:12px;color:var(--text-2)}

/* ---------- 功能分组 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:24px}
.f-card{
  position:relative;padding:24px;border-radius:var(--radius-card);
  background:var(--glass);border:1px solid rgba(255,255,255,.10);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.f-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 32px 56px -28px rgba(0,0,0,.85)}
.f-card .num{font-family:var(--mono);font-size:12px;color:var(--accent);letter-spacing:.12em}
.f-card .ico{
  width:40px;height:40px;margin:14px 0 16px;border-radius:12px;border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;color:var(--accent);background:rgba(122,92,255,.10);
}
.f-card h3{font-size:21px;font-weight:600;margin-bottom:10px}
.f-card p{color:var(--text-2);font-size:15px;line-height:1.85}
.f-card .badge{margin-top:16px}
.f-card--wide{
  background:linear-gradient(160deg,rgba(122,92,255,.20),rgba(34,211,197,.07));
  border-color:var(--line-strong);
}
.f-card--wide h3{font-size:22px}
.f-1{grid-column:span 4}
.f-2{grid-column:span 2}
.f-3{grid-column:span 6}
.f-4{grid-column:span 3}
.f-5{grid-column:span 3}

/* ---------- 使用场景 ---------- */
.scenes-grid{display:grid;grid-template-columns:1fr 380px;gap:56px;align-items:start}
.timeline{position:relative;padding-left:28px}
.timeline::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:1px;background:var(--line-strong)}
.scene-item{position:relative;padding-bottom:34px}
.scene-item:last-child{padding-bottom:0}
.scene-item::before{
  content:"";position:absolute;left:-28px;top:8px;width:8px;height:8px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 12px rgba(122,92,255,.9);
}
.scene-item h3{font-size:20px;font-weight:600;margin-bottom:8px}
.scene-item p{color:var(--text-2);font-size:15px;max-width:42em}
.scene-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.scenes-media{position:sticky;top:150px;border-radius:16px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card)}
.scenes-media img{aspect-ratio:4/3;object-fit:cover;width:100%;transition:transform .3s var(--ease)}
.scenes-media:hover img{transform:scale(1.03)}
.scenes-media figcaption{padding:14px 16px;font-size:13px;color:var(--text-3);background:var(--surface-1);border-top:1px solid var(--line)}

/* ---------- 成功案例 ---------- */
.cases-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.case-quote{border-left:3px solid var(--brand);padding:4px 0 4px 22px}
.case-quote p{font-size:22px;line-height:1.7;font-weight:500;color:var(--text-1)}
.case-quote footer{margin-top:18px;font-size:14px;color:var(--text-3)}
.case-list{display:grid;gap:18px}
.case-card{
  display:grid;grid-template-columns:180px 1fr;gap:20px;padding:18px;border-radius:var(--radius-card);
  background:var(--surface-1);border:1px solid var(--line);
  transition:transform .22s var(--ease),border-color .22s var(--ease),background-color .22s var(--ease);
}
.case-card:hover{transform:translateY(-4px);border-color:var(--line-strong);background:var(--surface-2)}
.case-card img{border-radius:12px;aspect-ratio:4/3;object-fit:cover;width:100%}
.case-card h3{font-size:19px;font-weight:600;margin-bottom:8px}
.case-card p{font-size:14px;color:var(--text-2)}
.case-metrics{display:flex;flex-wrap:wrap;gap:20px;margin-top:12px}
.case-metrics span{font-size:12px;color:var(--text-3)}
.case-metrics b{display:block;font-family:var(--mono);font-size:19px;color:var(--accent);font-variant-numeric:tabular-nums}

/* ---------- 价格 ---------- */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{
  display:flex;flex-direction:column;padding:26px;border-radius:var(--radius-card);
  background:var(--surface-1);border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.price-card:hover{transform:translateY(-4px);border-color:var(--line-strong)}
.price-card h3{font-size:20px;font-weight:600}
.price-card .plan-desc{font-size:14px;color:var(--text-2);margin-top:8px;min-height:44px}
.price-amount{display:flex;align-items:baseline;gap:6px;margin:18px 0 6px}
.price-amount b{font-family:var(--mono);font-size:40px;font-weight:700;line-height:1;font-variant-numeric:tabular-nums}
.price-amount span{font-size:13px;color:var(--text-3)}
.price-list{margin:22px 0 26px;display:grid;gap:12px}
.price-list li{display:flex;gap:10px;font-size:14px;color:var(--text-2);align-items:flex-start}
.price-list li i{flex-shrink:0;width:16px;height:16px;margin-top:5px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-style:normal;font-size:10px;line-height:1}
.price-list li i.on{background:rgba(53,208,127,.16);color:var(--success);border:1px solid rgba(53,208,127,.4)}
.price-list li i.off{background:var(--surface-3);color:var(--text-3);border:1px solid var(--line)}
.price-card .btn{margin-top:auto;width:100%}
.price-card--featured{
  position:relative;border:1px solid var(--brand);transform:translateY(-6px);
  background:linear-gradient(160deg,rgba(122,92,255,.18),rgba(34,211,197,.05));
  box-shadow:0 0 0 1px rgba(122,92,255,.35),0 34px 60px -30px rgba(122,92,255,.75);
}
.price-card--featured:hover{transform:translateY(-10px)}
.price-card--featured .badge{position:absolute;top:-13px;left:26px;background:var(--brand);border-color:var(--brand);color:#fff}

/* ---------- 最新信息 ---------- */
.news-lead{
  display:grid;grid-template-columns:6fr 6fr;gap:0;overflow:hidden;
  border-radius:var(--radius-card);border:1px solid var(--line);background:var(--surface-1);
  margin-bottom:26px;transition:border-color .22s var(--ease)
}
.news-lead:hover{border-color:var(--line-strong)}
.news-lead-media{overflow:hidden;display:block}
.news-lead-media img{width:100%;height:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s var(--ease)}
.news-lead:hover .news-lead-media img{transform:scale(1.03)}
.news-lead-body{padding:28px;display:flex;flex-direction:column;justify-content:center;gap:12px}
.news-lead-body h3{font-size:24px;font-weight:700;line-height:1.45}
.news-lead-body h3 a:hover{color:#c3b6ff}
.news-lead-body p{font-size:15px;color:var(--text-2)}
.meta-line{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--text-3)}
.meta-line .sep{width:1px;height:12px;background:var(--line)}
.news-list{border-top:1px solid var(--line)}
.news-item{
  display:grid;grid-template-columns:96px 1fr auto;gap:20px;align-items:center;
  padding:18px 12px;border-bottom:1px solid var(--line);
  transition:background-color .2s var(--ease);
}
.news-item:hover{background:rgba(255,255,255,.03)}
.news-thumb{width:96px;height:72px;border-radius:12px;overflow:hidden;background:linear-gradient(140deg,var(--surface-2),var(--surface-3))}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-item h3{font-size:17px;font-weight:600;margin-bottom:6px}
.news-item:hover h3{color:var(--text-1)}
.news-item p{font-size:14px;color:var(--text-2);overflow:hidden;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical}
.news-item .news-time{font-size:13px;color:var(--text-3);white-space:nowrap;font-family:var(--mono);font-variant-numeric:tabular-nums}
.news-empty{
  padding:56px 24px;text-align:center;border:1px dashed var(--line-strong);border-radius:var(--radius-card);
  background:var(--surface-1);color:var(--text-2);display:grid;gap:16px;justify-items:center;
}
.news-empty svg{color:var(--text-3)}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:48px}
.faq-side p{color:var(--text-2);font-size:15px;margin-top:14px;max-width:34em}
.faq-list{display:grid;gap:12px}
.faq-item{border:1px solid var(--line);border-radius:14px;background:var(--glass);backdrop-filter:blur(10px);overflow:hidden;transition:border-color .22s var(--ease)}
.faq-item[open]{border-color:var(--line-strong)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:16px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .plus{position:relative;width:16px;height:16px;flex-shrink:0;color:var(--accent);transition:transform .22s var(--ease)}
.faq-item summary .plus::before,
.faq-item summary .plus::after{content:"";position:absolute;background:currentColor;border-radius:2px}
.faq-item summary .plus::before{left:0;top:7px;width:16px;height:2px}
.faq-item summary .plus::after{left:7px;top:0;width:2px;height:16px}
.faq-item[open] summary .plus{transform:rotate(45deg)}
.faq-body{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--text-2);border-top:1px solid var(--line);padding-top:16px;margin-top:0}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;text-align:center;
  padding:64px 32px;border-radius:24px;
  background:linear-gradient(160deg,rgba(122,92,255,.20),rgba(255,122,69,.08));
  border:1px solid var(--line-strong);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(520px 260px at 20% 10%,rgba(122,92,255,.28),transparent 70%),
    radial-gradient(460px 240px at 82% 90%,rgba(34,211,197,.20),transparent 72%);
  pointer-events:none;
}
.cta-band > *{position:relative}
.cta-band h2{font-size:clamp(24px,3.4vw,34px);font-weight:700}
.cta-band p{color:var(--text-2);margin:14px auto 0;max-width:44em;font-size:15px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:30px}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg-deep);padding:64px 0 28px;margin-top:96px}
.footer-brand{display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;padding-bottom:32px;border-bottom:1px solid var(--line)}
.footer-brand .brand-name{font-size:18px}
.footer-brand p{font-size:14px;color:var(--text-3);margin-top:6px}
.footer-brand .links{display:flex;gap:22px}
.footer-brand .links a{font-size:14px;color:var(--text-2)}
.footer-brand .links a:hover{color:var(--text-1)}
.footer-cols{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;padding:36px 0}
.footer-cols h4{font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:16px;letter-spacing:.04em}
.footer-cols li{margin-bottom:11px}
.footer-cols a{font-size:14px;color:var(--text-2);transition:color .2s var(--ease),transform .2s var(--ease);display:inline-block}
.footer-cols a:hover{color:var(--text-1);transform:translateX(2px)}
.footer-legal{display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;padding-top:22px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3)}
.footer-legal a{color:var(--text-3)}
.footer-legal a:hover{color:var(--text-2)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .scenes-grid{grid-template-columns:1fr 320px;gap:40px}
  .cases-grid{grid-template-columns:1fr;gap:32px}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .hero{padding:56px 0 72px;min-height:auto}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-media{order:-1}
  .f-1,.f-2,.f-3,.f-4,.f-5{grid-column:span 3}
  .f-3{grid-column:span 6}
  .scenes-grid{grid-template-columns:1fr}
  .scenes-media{position:static;max-width:520px}
  .faq-grid{grid-template-columns:1fr;gap:28px}
  .pricing-grid{grid-template-columns:1fr;gap:20px}
  .price-card--featured{transform:none}
  .price-card--featured:hover{transform:translateY(-4px)}
  .news-lead{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:repeat(2,1fr)}
  .brand-row .brand-actions .btn-ghost{display:none}
  .channel-inner{justify-content:flex-start}
  .channel-status{display:none}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .section-head h2{font-size:26px}
  .brand-row{height:60px;gap:12px}
  .brand-name{font-size:15px}
  .brand-actions .btn-primary{display:none}
  .nav-toggle{display:block}
  .channel-row{display:none}
  .site-header.nav-open .channel-row{display:block}
  .site-header.nav-open .channel-inner{height:auto;flex-direction:column;align-items:stretch;padding:10px 0 14px}
  .site-header.nav-open .channel-nav{flex-direction:column;align-items:stretch;gap:4px;overflow:visible}
  .site-header.nav-open .channel-nav a{height:44px;border-radius:12px;padding:0 14px}
  .site-header.nav-open .channel-nav a.is-active::after{left:14px;right:auto;width:22px;bottom:8px}
  .hero-stats div{padding-right:18px;margin-right:18px}
  .hero-stats b{font-size:20px}
  .f-1,.f-2,.f-3,.f-4,.f-5{grid-column:span 6}
  .case-card{grid-template-columns:1fr}
  .news-item{grid-template-columns:72px 1fr;gap:14px}
  .news-thumb{width:72px;height:56px}
  .news-item .news-time{grid-column:2;font-size:12px}
  .cta-band{padding:44px 20px;border-radius:18px}
  .footer-cols{grid-template-columns:1fr;gap:8px}
  .footer-cols .col{border-bottom:1px solid var(--line);padding:14px 0}
  .footer-cols h4{margin-bottom:10px}
  .footer-brand{padding-bottom:24px}
}
@media (max-width:519px){
  body{font-size:15px}
  .hero h1{font-size:clamp(26px,7.6vw,34px)}
  .hero-sub{font-size:15px}
  .hero-actions .btn{width:100%}
  .hero-stats{gap:14px 0}
  .hero-stats div{border-right:0;padding-right:0;margin-right:0;min-width:44%}
  .f-card{padding:20px}
  .news-lead-body{padding:20px}
  .news-lead-body h3{font-size:20px}
  .faq-item summary{padding:16px;font-size:15px;min-height:44px}
  .cta-actions .btn{width:100%}
  .footer-legal{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important}
  html{scroll-behavior:auto}
  .f-card:hover,.case-card:hover,.price-card:hover,.btn:hover{transform:none}
  .scenes-media:hover img,.news-lead:hover .news-lead-media img{transform:none}
}

/* roulang page: article */
:root{
  --bg-base:#060913;
  --bg-deep:#0A0F1F;
  --surface-1:#0E1428;
  --surface-2:#151D38;
  --surface-3:#1C2745;
  --brand:#7A5CFF;
  --brand-deep:#4B33C4;
  --brand-soft:rgba(122,92,255,.14);
  --accent:#22D3C5;
  --accent-soft:rgba(34,211,197,.12);
  --cta:#FF7A45;
  --cta-soft:rgba(255,122,69,.14);
  --success:#35D07F;
  --warning:#FFB13D;
  --danger:#FF5C7A;
  --text-1:#E9EDFA;
  --text-2:#A8B2CE;
  --text-3:#6E7899;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(122,92,255,.38);
  --glass:linear-gradient(160deg, rgba(122,92,255,.10), rgba(34,211,197,.045));
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow-card:0 24px 48px -28px rgba(0,0,0,.75);
  --shadow-glow:0 0 0 1px rgba(122,92,255,.45), 0 14px 34px -14px rgba(122,92,255,.7);
  --shadow-glow-cta:0 0 0 1px rgba(255,122,69,.45), 0 14px 34px -14px rgba(255,122,69,.65);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --pad-y:96px;
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-2);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:none;padding:0;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{color:var(--text-1);font-weight:700;line-height:1.35;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-pill);
  padding:12px 24px;font-size:15px;font-weight:600;
  transition:transform 200ms var(--ease),background 200ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease),color 200ms var(--ease);
  white-space:nowrap;
}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-glow);}
.btn-primary:hover{background:#8A70FF;transform:translateY(-2px);}
.btn-cta{background:var(--cta);color:#1A0D06;box-shadow:var(--shadow-glow-cta);}
.btn-cta:hover{background:#FF8C5E;transform:translateY(-2px);}
.btn-ghost{background:transparent;color:var(--text-2);border:1px solid var(--line-strong);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--text-1);transform:translateY(-2px);}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;}
.text-link{
  position:relative;font-size:15px;color:var(--accent);font-weight:600;
}
.text-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform 220ms var(--ease);
}
.text-link:hover::after{transform:scaleX(1);}
.text-link:hover{color:var(--text-1);}

/* ============ 徽章 / 胶囊 ============ */
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--radius-pill);
  font-size:12px;line-height:1;font-weight:600;
  border:1px solid var(--line);color:var(--text-2);background:rgba(255,255,255,.03);
}
.chip-accent{border-color:rgba(34,211,197,.4);color:var(--accent);background:var(--accent-soft);}
.chip-brand{border-color:var(--line-strong);color:#C6BAFF;background:var(--brand-soft);}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(6,9,19,.55);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  transition:background 220ms var(--ease),box-shadow 220ms var(--ease);
}
.site-header.is-scrolled{
  background:rgba(6,9,19,.86);
  box-shadow:0 1px 0 var(--line),0 18px 40px -32px rgba(0,0,0,.9);
}
.brand-row{display:flex;align-items:center;height:72px;gap:16px;}
.brand{display:inline-flex;align-items:center;gap:10px;min-width:0;}
.brand-mark{width:34px;height:34px;flex:0 0 auto;filter:drop-shadow(0 6px 16px rgba(122,92,255,.45));}
.brand-name{font-size:17px;font-weight:700;color:var(--text-1);letter-spacing:.01em;white-space:nowrap;}
.spacer{flex:1 1 auto;}
.brand-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:var(--radius-pill);
  border:1px solid var(--line);color:var(--text-2);
  transition:color 200ms var(--ease),border-color 200ms var(--ease),background 200ms var(--ease);
}
.icon-btn:hover{color:var(--text-1);border-color:var(--line-strong);background:var(--brand-soft);}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:0 11px;border-radius:var(--radius-sm);
  border:1px solid var(--line);
}
.nav-toggle span{display:block;height:2px;background:var(--text-1);border-radius:2px;transition:transform 200ms var(--ease),opacity 200ms var(--ease);}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg);}
body.nav-open .nav-toggle span:nth-child(2){opacity:0;}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.channel-row{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(10,15,31,.45);}
.channel-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:48px;}
.channel-nav{display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none;}
.channel-nav::-webkit-scrollbar{display:none;}
.channel-nav a{
  position:relative;display:inline-flex;align-items:center;height:32px;padding:0 14px;
  border-radius:var(--radius-pill);font-size:14px;color:var(--text-2);white-space:nowrap;
  transition:color 180ms var(--ease),background 180ms var(--ease);
}
.channel-nav a:hover{color:var(--text-1);background:var(--brand-soft);}
.channel-nav a.is-active{color:var(--text-1);background:var(--brand-soft);}
.channel-nav a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;box-shadow:0 0 10px rgba(122,92,255,.85);
}
.channel-status{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);white-space:nowrap;}
.channel-status .dot{width:7px;height:7px;border-radius:50%;background:var(--success);box-shadow:0 0 0 4px rgba(53,208,127,.14);}

/* ============ 文章头部 ============ */
.article-head{
  position:relative;overflow:hidden;padding:40px 0 44px;
  background:linear-gradient(180deg,var(--bg-deep) 0%,var(--bg-base) 100%);
  border-bottom:1px solid var(--line);
}
.article-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.16;mix-blend-mode:screen;
}
.article-head .container{position:relative;z-index:1;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-3);margin-bottom:22px;}
.breadcrumb a{color:var(--text-3);transition:color 180ms var(--ease);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:rgba(110,120,153,.6);}
.breadcrumb .crumb-cur{max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-2);}
.article-title{
  font-size:clamp(28px,3.6vw,38px);line-height:1.35;font-weight:700;
  max-width:880px;letter-spacing:-.005em;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:20px;font-size:14px;color:var(--text-3);}
.meta-divider{width:1px;height:14px;background:var(--line);display:inline-block;}

/* ============ 正文区 ============ */
.article-main{padding:56px 0 88px;}
.article-grid{
  display:grid;grid-template-columns:minmax(0,760px) 240px;
  gap:56px;justify-content:center;align-items:start;
}
.article-content{min-width:0;}
.toc-mobile{
  display:none;margin-bottom:28px;padding:14px 18px;
  border:1px solid var(--line);border-radius:var(--radius-md);
  background:var(--glass);
}
.toc-mobile summary{font-size:15px;font-weight:600;color:var(--text-1);cursor:pointer;list-style:none;}
.toc-mobile summary::-webkit-details-marker{display:none;}
.toc-mobile summary::after{content:"＋";float:right;color:var(--accent);}
.toc-mobile[open] summary::after{content:"－";}
.toc-list{margin-top:12px;display:flex;flex-direction:column;gap:8px;}
.toc-list a{font-size:14px;color:var(--text-2);}
.toc-list a:hover{color:var(--accent);}

.article-content p{font-size:16px;line-height:1.9;color:var(--text-2);margin:1em 0;}
.article-content h2{
  position:relative;font-size:24px;line-height:1.4;color:var(--text-1);
  margin:40px 0 16px;padding-left:16px;font-weight:700;scroll-margin-top:150px;
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:7px;width:3px;height:18px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 12px rgba(122,92,255,.7);
}
.article-content h3{font-size:20px;line-height:1.5;color:var(--text-1);margin:28px 0 12px;font-weight:600;scroll-margin-top:150px;}
.article-content h4{font-size:17px;margin:22px 0 10px;color:var(--text-1);}
.article-content ul,.article-content ol{padding-left:1.5em;margin:1em 0;color:var(--text-2);line-height:1.9;}
.article-content ul{list-style:disc;}
.article-content ol{list-style:decimal;}
.article-content li{margin:.4em 0;}
.article-content ul li::marker{color:var(--accent);}
.article-content ol li::marker{color:var(--brand);font-weight:600;}
.article-content blockquote{
  margin:20px 0;padding:16px 20px;border-left:3px solid var(--brand);
  background:var(--brand-soft);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--text-1);font-size:16px;line-height:1.85;
}
.article-content blockquote p{color:var(--text-1);margin:.4em 0;}
.article-content img{max-width:100%;height:auto;border-radius:16px;margin:20px 0;border:1px solid var(--line);}
.article-content figure{margin:22px 0;}
.article-content figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px;}
.article-content a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;}
.article-content a:hover{color:var(--text-1);}
.article-content strong{color:var(--text-1);font-weight:600;}
.article-content code{
  font-family:var(--mono);font-size:14px;background:var(--surface-2);
  padding:2px 8px;border-radius:10px;color:var(--accent);
}
.article-content pre{
  background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:16px;overflow-x:auto;margin:20px 0;
}
.article-content pre code{background:none;padding:0;color:var(--text-1);}
.article-content table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;}
.article-content th{
  background:var(--surface-2);color:var(--text-1);font-weight:600;
  text-align:left;padding:12px 14px;border:1px solid var(--line);
}
.article-content td{padding:12px 14px;border:1px solid var(--line);color:var(--text-2);}
.article-content hr{border:none;border-top:1px solid var(--line);margin:36px 0;}

.empty-state{
  padding:56px 32px;border:1px solid var(--line);border-radius:var(--radius-lg);
  background:var(--glass);text-align:center;box-shadow:var(--shadow-card);
}
.empty-state h2{font-size:22px;margin-bottom:12px;}
.empty-state p{color:var(--text-2);margin-bottom:24px;font-size:15px;}

/* ============ 侧边目录 ============ */
.article-side{position:sticky;top:140px;}
.toc-card{
  padding:20px;border:1px solid var(--line);border-radius:var(--radius-lg);
  background:var(--glass);box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
}
.toc-card .toc-heading{
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent);font-family:var(--mono);margin-bottom:14px;
}
.toc-card nav{display:flex;flex-direction:column;gap:2px;}
.toc-card a{
  display:block;padding:7px 10px;border-left:2px solid transparent;
  font-size:14px;color:var(--text-2);border-radius:0 8px 8px 0;
  transition:color 180ms var(--ease),background 180ms var(--ease),border-color 180ms var(--ease);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.toc-card a:hover{color:var(--text-1);background:rgba(255,255,255,.03);}
.toc-card a.is-current{color:var(--text-1);border-left-color:var(--brand);background:var(--brand-soft);}

/* ============ 文末模块 ============ */
.article-foot{margin-top:52px;padding-top:36px;border-top:1px solid var(--line);}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:36px;}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--radius-pill);
  font-size:13px;color:var(--text-2);border:1px solid var(--line);background:rgba(255,255,255,.03);
  transition:color 180ms var(--ease),border-color 180ms var(--ease),background 180ms var(--ease);
}
.tag:hover{color:var(--text-1);border-color:var(--line-strong);background:var(--brand-soft);}
.post-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-bottom:40px;}
.post-nav-item{
  display:block;padding:16px 18px;border:1px solid var(--line);border-radius:var(--radius-md);
  background:rgba(255,255,255,.02);font-size:14px;color:var(--text-3);
}
a.post-nav-item{color:var(--text-2);transition:border-color 200ms var(--ease),background 200ms var(--ease),transform 200ms var(--ease);}
a.post-nav-item:hover{border-color:var(--line-strong);background:var(--brand-soft);transform:translateY(-3px);color:var(--text-1);}
.post-nav-item.is-disabled{opacity:.5;cursor:not-allowed;}
.post-nav-label{display:block;font-size:12px;color:var(--text-3);margin-bottom:6px;letter-spacing:.08em;}

.sub-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:20px;}
.sub-head h2{font-size:22px;}
.sub-head .sub-note{font-size:14px;color:var(--text-3);}

.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.related-card{
  display:block;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  background:var(--glass);box-shadow:var(--shadow-card);
  transition:transform 220ms var(--ease),border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.related-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 30px 56px -26px rgba(0,0,0,.9);}
.related-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--surface-2);}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease);}
.related-card:hover .related-thumb img{transform:scale(1.04);}
.related-body{padding:18px 20px 22px;}
.related-body h3{font-size:17px;line-height:1.45;margin-bottom:8px;}
.related-body p{font-size:14px;color:var(--text-3);line-height:1.7;}
.related-meta{margin-top:12px;font-size:12px;color:var(--text-3);font-family:var(--mono);}

.back-row{margin-top:36px;display:flex;justify-content:center;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;border-top:1px solid var(--line);
  background:linear-gradient(180deg,var(--bg-deep) 0%,var(--bg-base) 100%);
  padding:64px 0 32px;margin-top:0;
}
.footer-brand{display:flex;flex-wrap:wrap;align-items:center;gap:20px;padding-bottom:28px;border-bottom:1px solid var(--line);}
.footer-brand .brand-name{font-size:18px;}
.footer-slogan{flex:1 1 320px;font-size:14px;color:var(--text-3);}
.footer-quick{display:flex;gap:18px;flex-wrap:wrap;}
.footer-quick a{font-size:14px;color:var(--text-2);transition:color 180ms var(--ease);}
.footer-quick a:hover{color:var(--accent);}
.footer-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px;padding:36px 0;}
.footer-col h3{font-size:14px;color:var(--text-1);margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{display:inline-block;font-size:14px;color:var(--text-3);transition:color 180ms var(--ease),transform 180ms var(--ease);}
.footer-col a:hover{color:var(--text-1);transform:translateX(2px);}
.footer-col p{font-size:14px;color:var(--text-3);line-height:1.9;}
.footer-legal{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding-top:24px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.footer-legal a{color:var(--text-3);}
.footer-legal a:hover{color:var(--text-2);}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .article-grid{grid-template-columns:minmax(0,1fr);max-width:760px;margin:0 auto;}
  .article-side{display:none;}
  .toc-mobile{display:block;}
}
@media (max-width:1023px){
  .brand-row{height:64px;}
  .nav-toggle{display:flex;}
  .brand-actions .btn-ghost{display:none;}
  .channel-row{display:none;}
  body.nav-open .channel-row{display:block;}
  .channel-inner{flex-direction:column;align-items:stretch;height:auto;padding:12px 0 18px;gap:10px;}
  .channel-nav{flex-direction:column;align-items:stretch;gap:2px;}
  .channel-nav a{height:auto;padding:12px 14px;border-radius:var(--radius-sm);}
  .channel-nav a.is-active::after{display:none;}
  .channel-status{justify-content:flex-start;padding-left:14px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .article-head{padding:28px 0 34px;}
  .article-main{padding:40px 0 64px;}
  .breadcrumb{margin-bottom:16px;}
  .breadcrumb .crumb-cur{max-width:240px;}
  .article-content h2{font-size:21px;margin:32px 0 14px;}
  .article-content h3{font-size:18px;}
  .post-nav{grid-template-columns:minmax(0,1fr);}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .footer-cols{grid-template-columns:minmax(0,1fr);gap:26px;}
  .footer-brand{padding-bottom:22px;}
  .icon-btn{display:none;}
}
@media (max-width:519px){
  .brand-name{font-size:15px;}
  .article-title{font-size:24px;}
  .article-meta{gap:10px;font-size:13px;}
  .empty-state{padding:40px 20px;}
  .btn{padding:11px 18px;font-size:14px;}
  .footer-legal{flex-direction:column;align-items:flex-start;}
}
@media (max-width:399px){
  .brand-mark{width:28px;height:28px;}
  .brand-actions{gap:6px;}
  .btn-sm{padding:9px 12px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --bg-base:#060913;
  --bg-deep:#0A0F1F;
  --surface-1:#0E1428;
  --surface-2:#151D38;
  --surface-3:#1C2745;
  --brand:#7A5CFF;
  --brand-deep:#4B33C4;
  --brand-soft:rgba(122,92,255,.14);
  --accent:#22D3C5;
  --accent-soft:rgba(34,211,197,.14);
  --cta:#FF7A45;
  --cta-soft:rgba(255,122,69,.16);
  --success:#35D07F;
  --warning:#FFB13D;
  --danger:#FF5C7A;
  --text-1:#E9EDFA;
  --text-2:#A8B2CE;
  --text-3:#6E7899;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(122,92,255,.38);
  --glass:linear-gradient(160deg, rgba(122,92,255,.10), rgba(34,211,197,.045));
  --glass-bright:linear-gradient(160deg, rgba(122,92,255,.20), rgba(34,211,197,.07));
  --radius-card:18px;
  --radius-sm:12px;
  --radius-img:16px;
  --pill:999px;
  --shadow-card:0 24px 48px -28px rgba(0,0,0,.75);
  --shadow-brand:0 0 0 1px rgba(122,92,255,.45), 0 14px 34px -14px rgba(122,92,255,.7);
  --shadow-cta:0 0 0 1px rgba(255,122,69,.45), 0 14px 34px -14px rgba(255,122,69,.65);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;font-size:inherit;color:inherit;border:0;background:none;cursor:pointer;}
input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{line-height:1.35;font-weight:700;}
strong{font-weight:600;color:var(--text-1);}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(6,9,19,.55);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .22s var(--ease), border-color .22s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(6,9,19,.86);
  border-bottom-color:var(--line);
}
.brand-row{display:flex;align-items:center;gap:14px;height:72px;}
.brand{display:flex;align-items:center;gap:12px;min-width:0;}
.brand-mark{width:38px;height:38px;flex:0 0 auto;transition:transform .22s var(--ease);}
.brand:hover .brand-mark{transform:rotate(-6deg) scale(1.05);}
.brand-name{
  font-size:17px;font-weight:700;color:var(--text-1);white-space:nowrap;
  letter-spacing:.01em;
}
.spacer{flex:1 1 auto;}
.brand-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:38px;height:38px;border-radius:var(--pill);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--text-2);border:1px solid var(--line);
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.icon-btn:hover{color:var(--text-1);background:var(--brand-soft);border-color:var(--line-strong);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-2);transition:transform .22s var(--ease),opacity .22s var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.channel-row{border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.channel-inner{display:flex;align-items:center;gap:18px;height:48px;}
.channel-nav{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;flex:1 1 auto;}
.channel-nav::-webkit-scrollbar{display:none;}
.channel-nav a{
  display:inline-block;white-space:nowrap;
  padding:7px 16px;border-radius:var(--pill);
  font-size:14px;color:var(--text-2);
  transition:color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.channel-nav a:hover{color:var(--text-1);background:var(--brand-soft);}
.channel-nav a.is-active{
  color:var(--text-1);background:var(--brand-soft);
  box-shadow:inset 0 -2px 0 var(--brand);
}
.channel-status{
  display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);white-space:nowrap;
}
.channel-status .dot{
  width:8px;height:8px;border-radius:50%;background:var(--success);
  box-shadow:0 0 0 4px rgba(53,208,127,.14);
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--pill);font-weight:600;white-space:nowrap;
  border:1px solid transparent;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-lg{padding:14px 28px;font-size:16px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-brand);}
.btn-primary:hover{background:#8a70ff;transform:translateY(-2px);}
.btn-cta{background:var(--cta);color:#1a0d05;box-shadow:var(--shadow-cta);}
.btn-cta:hover{background:#ff8f62;transform:translateY(-2px);}
.btn-ghost{background:transparent;color:var(--text-1);border-color:var(--line-strong);}
.btn-ghost:hover{background:var(--brand-soft);}
.btn[disabled],.btn.is-disabled{
  opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;
}
.link-underline{
  position:relative;color:var(--accent);font-size:15px;padding-bottom:2px;
}
.link-underline::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand);
  transition:width .24s var(--ease);
}
.link-underline:hover::after{width:100%;}

/* ---------- Badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--pill);
  font-size:12px;line-height:1;letter-spacing:.02em;
}
.badge-accent{color:var(--accent);border:1px solid rgba(34,211,197,.45);background:var(--accent-soft);}
.badge-brand{color:#c3b6ff;border:1px solid var(--line-strong);background:var(--brand-soft);}
.badge-ok{color:var(--success);border:1px solid rgba(53,208,127,.4);background:rgba(53,208,127,.12);}
.badge-warn{color:var(--warning);border:1px solid rgba(255,177,61,.4);background:rgba(255,177,61,.12);}
.badge-mute{color:var(--text-2);border:1px solid var(--line);background:rgba(255,255,255,.03);}

/* ---------- Section frame ---------- */
.section{padding:96px 0;position:relative;}
.section + .section{border-top:1px solid var(--line);}
.section-head{margin-bottom:44px;max-width:760px;}
.eyebrow{
  display:inline-block;font-family:var(--mono);
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent);margin-bottom:14px;
}
.section-head h2{font-size:clamp(24px,3vw,32px);font-weight:700;}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16px;max-width:38em;}

/* ---------- Crumb ---------- */
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--text-3);margin-bottom:26px;
}
.crumb a:hover{color:var(--text-1);}
.crumb span.sep{color:var(--text-3);opacity:.7;}
.crumb .current{color:var(--text-2);}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:64px 0 88px;
  background:
    radial-gradient(560px 320px at 12% 8%, rgba(122,92,255,.18), transparent 70%),
    radial-gradient(520px 300px at 88% 82%, rgba(34,211,197,.14), transparent 72%),
    linear-gradient(180deg,var(--bg-base),var(--bg-deep));
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(to right, rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 30%, #000 20%, transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 30%, #000 20%, transparent 78%);
  opacity:.7;
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.04fr 1fr;gap:52px;align-items:center;
}
.hero h1{
  font-size:clamp(30px,5.2vw,50px);
  line-height:1.18;font-weight:800;letter-spacing:-.005em;
}
.hero h1 .hl{
  background:linear-gradient(120deg,var(--brand) 0%,var(--accent) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{
  margin-top:20px;color:var(--text-2);font-size:16.5px;line-height:1.9;max-width:36em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:0;margin-top:40px;
  border-top:1px solid var(--line);padding-top:26px;
}
.hero-stats .stat{
  padding-right:26px;margin-right:26px;border-right:1px solid var(--line);
}
.hero-stats .stat:last-child{border-right:0;margin-right:0;padding-right:0;}
.hero-stats b{
  display:block;font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:24px;font-weight:700;color:var(--text-1);letter-spacing:.01em;
}
.hero-stats small{display:block;font-size:12px;color:var(--text-3);margin-top:2px;}

.hero-media{
  position:relative;border-radius:var(--radius-img);overflow:hidden;
  border:1px solid var(--line);
  background:var(--surface-1);
  box-shadow:var(--shadow-card);
  aspect-ratio:16/11;
}
.hero-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.hero-media:hover img{transform:scale(1.03);}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,9,19,0) 45%,rgba(6,9,19,.86) 100%);
}
.float-card{
  position:absolute;right:16px;bottom:16px;z-index:2;
  min-width:196px;padding:14px 18px;
  border-radius:14px;
  background:linear-gradient(160deg, rgba(122,92,255,.22), rgba(34,211,197,.08));
  border:1px solid rgba(255,255,255,.12);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08), 0 18px 34px -20px rgba(0,0,0,.9);
}
.float-card b{
  display:block;font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:22px;color:var(--accent);line-height:1.2;
}
.float-card span{display:block;font-size:12.5px;color:var(--text-2);margin-top:4px;}

/* ---------- Cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.card{
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card), inset 0 1px 0 rgba(255,255,255,.06);
  padding:24px;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:0 30px 56px -30px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.08);
}
.card h3{font-size:20px;font-weight:600;margin-bottom:10px;}
.card p{color:var(--text-2);font-size:15px;line-height:1.85;}
.card-figure{
  margin:-24px -24px 20px;border-radius:var(--radius-card) var(--radius-card) 0 0;overflow:hidden;
  aspect-ratio:16/9;background:var(--surface-2);
}
.card-figure img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.card:hover .card-figure img{transform:scale(1.03);}
.card-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.card-top{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.icon-box{
  width:40px;height:40px;border-radius:12px;flex:0 0 auto;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);background:var(--brand-soft);color:var(--accent);
}
.card-num{
  font-family:var(--mono);font-size:13px;letter-spacing:.1em;color:var(--accent);
}

/* ---------- Flow ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative;margin-top:8px;}
.flow-item{position:relative;padding:0 22px 0 0;}
.flow-item::before{
  content:"";position:absolute;left:0;top:15px;width:100%;height:1px;background:var(--line);
}
.flow-dot{
  position:relative;z-index:1;
  width:12px;height:12px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 0 6px rgba(122,92,255,.16);
  display:block;margin-bottom:22px;
}
.flow-item h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.flow-item p{color:var(--text-2);font-size:14.5px;}
.flow-item .step-no{
  display:block;font-family:var(--mono);font-size:12px;color:var(--text-3);
  letter-spacing:.12em;margin-bottom:6px;
}

/* ---------- Entry list ---------- */
.entry-list{border-top:1px solid var(--line);}
.entry{
  display:grid;grid-template-columns:120px 1fr auto;gap:22px;align-items:center;
  padding:22px 12px;border-bottom:1px solid var(--line);
  transition:background .2s var(--ease);
}
.entry:hover{background:rgba(255,255,255,.03);}
.entry-thumb{
  width:120px;height:84px;border-radius:12px;overflow:hidden;background:var(--surface-2);
  position:relative;
}
.entry-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.entry:hover .entry-thumb img{transform:scale(1.04);}
.entry-body h3{font-size:18px;font-weight:600;margin-bottom:6px;color:var(--text-1);}
.entry-body p{color:var(--text-2);font-size:14.5px;line-height:1.8;max-width:52em;}
.entry-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}
.entry-side{display:flex;flex-direction:column;align-items:flex-end;gap:10px;}

.list-foot{display:flex;justify-content:center;margin-top:34px;}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:44px;align-items:start;}
.faq-side h2{font-size:clamp(24px,3vw,32px);}
.faq-side p{margin-top:14px;color:var(--text-2);font-size:15.5px;max-width:24em;}
.faq-item{
  border:1px solid var(--line);border-radius:14px;
  background:var(--glass);
  margin-bottom:12px;overflow:hidden;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.faq-item:hover{border-color:var(--line-strong);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--text-1);
}
.faq-q .plus{
  flex:0 0 auto;width:22px;height:22px;position:relative;transition:transform .24s var(--ease);
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--accent);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-q .plus::before{width:14px;height:2px;}
.faq-q .plus::after{width:2px;height:14px;}
.faq-item.is-open .plus{transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s var(--ease);
}
.faq-a p{
  padding:0 22px 20px;color:var(--text-2);font-size:15px;line-height:1.85;
  border-top:1px solid var(--line);padding-top:16px;margin:0 22px 0;
}
.faq-a p{border-top:1px solid var(--line);margin:0 22px 20px;padding:16px 0 0;}

/* ---------- CTA ---------- */
.cta-section{padding:88px 0;}
.cta-banner{
  position:relative;overflow:hidden;border-radius:24px;
  padding:64px 40px;text-align:center;
  background:linear-gradient(160deg, rgba(122,92,255,.16), rgba(34,211,197,.06));
  border:1px solid var(--line);
  box-shadow:var(--shadow-card), inset 0 1px 0 rgba(255,255,255,.06);
}
.cta-banner::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(420px 220px at 50% 0%, rgba(255,122,69,.18), transparent 70%),
    linear-gradient(to right, rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size:auto, 56px 56px, 56px 56px;
}
.cta-inner{position:relative;z-index:1;}
.cta-banner h2{font-size:clamp(24px,3.4vw,34px);font-weight:800;}
.cta-banner p{margin-top:14px;color:var(--text-2);font-size:16px;max-width:34em;margin-left:auto;margin-right:auto;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:30px;}

/* ---------- Footer ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,var(--bg-deep),var(--bg-base));
  padding:64px 0 32px;
}
.footer-brand-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px;
  padding-bottom:28px;border-bottom:1px solid var(--line);
}
.footer-tagline{color:var(--text-3);font-size:14px;flex:1 1 260px;}
.footer-quick{display:flex;gap:18px;font-size:14px;}
.footer-quick a{color:var(--text-2);transition:color .2s var(--ease),transform .2s var(--ease);}
.footer-quick a:hover{color:var(--text-1);}
.footer-cols{
  display:grid;grid-template-columns:repeat(4,1fr);gap:28px;
  padding:36px 0;border-bottom:1px solid var(--line);
}
.footer-cols h4{font-size:14px;color:var(--text-1);margin-bottom:14px;font-weight:600;}
.footer-cols li{margin-bottom:10px;}
.footer-cols a{
  font-size:14px;color:var(--text-3);
  transition:color .2s var(--ease),transform .2s var(--ease);display:inline-block;
}
.footer-cols a:hover{color:var(--text-1);transform:translateX(2px);}
.footer-legal{
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;
  padding-top:24px;font-size:13px;color:var(--text-3);
}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);}
.reveal.is-in{opacity:1;transform:none;transition:opacity .5s var(--ease),transform .5s var(--ease);}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-media{aspect-ratio:16/9;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
}
@media (max-width:1023px){
  .section{padding:72px 0;}
  .flow{grid-template-columns:repeat(2,1fr);gap:32px 0;}
  .flow-item:nth-child(2n)::before{width:calc(100% + 22px);}
  .footer-cols{grid-template-columns:repeat(2,1fr);gap:28px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .brand-row{height:60px;}
  .brand-name{font-size:15.5px;}
  .icon-btn,.btn-ghost.btn-sm{display:none;}
  .nav-toggle{display:flex;}
  .channel-row{display:none;}
  .channel-row.is-open{display:block;}
  .channel-inner{height:auto;padding:10px 0;}
  .channel-nav{flex-direction:column;align-items:stretch;gap:6px;}
  .channel-nav a{padding:12px 14px;border-radius:12px;}
  .channel-status{display:none;}
  .section{padding:56px 0;}
  .hero{padding:40px 0 56px;}
  .grid-3,.grid-2{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr;}
  .flow-item{padding:0;}
  .flow-item::before{display:none;}
  .entry{grid-template-columns:84px 1fr;gap:16px;padding:18px 6px;}
  .entry-thumb{width:84px;height:64px;}
  .entry-side{grid-column:1 / -1;flex-direction:row;align-items:center;justify-content:flex-start;}
  .hero-stats{gap:18px 0;}
  .hero-stats .stat{padding-right:18px;margin-right:18px;}
  .cta-banner{padding:44px 22px;}
  .footer-cols{grid-template-columns:1fr 1fr;}
  .footer-legal{flex-direction:column;gap:8px;}
}
@media (max-width:519px){
  .brand-name{font-size:14.5px;white-space:normal;line-height:1.3;}
  .hero h1{font-size:clamp(25px,7.6vw,32px);}
  .hero-stats .stat{width:50%;border-right:0;padding-right:0;margin-right:0;}
  .card{padding:20px;}
  .float-card{right:10px;bottom:10px;min-width:0;padding:10px 14px;}
  .footer-cols{grid-template-columns:1fr;}
  .btn-lg{padding:13px 22px;font-size:15px;min-height:44px;}
}
@media (max-width:479px){
  .hero-actions .btn{width:100%;}
  .entry{grid-template-columns:1fr;}
  .entry-thumb{width:100%;height:140px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
  .reveal{opacity:1;transform:none;}
  .hero-media:hover img,.card:hover .card-figure img,.entry:hover .entry-thumb img{transform:none;}
}

/* roulang page: category2 */
:root{
  --bg-base:#060913;
  --bg-deep:#0A0F1F;
  --surface-1:#0E1428;
  --surface-2:#151D38;
  --surface-3:#1C2745;
  --brand:#7A5CFF;
  --brand-deep:#4B33C4;
  --brand-soft:rgba(122,92,255,.14);
  --accent:#22D3C5;
  --cta:#FF7A45;
  --success:#35D07F;
  --warning:#FFB13D;
  --danger:#FF5C7A;
  --text-1:#E9EDFA;
  --text-2:#A8B2CE;
  --text-3:#6E7899;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(122,92,255,.38);
  --glass:linear-gradient(160deg,rgba(122,92,255,.10),rgba(34,211,197,.045));
  --radius-card:18px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow-card:0 24px 48px -28px rgba(0,0,0,.75);
  --ease:cubic-bezier(.22,.61,.36,1);
  --space-1:8px;
  --space-2:16px;
  --space-3:24px;
  --space-4:32px;
  --space-5:48px;
  --space-6:72px;
  --space-7:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,p,ul,ol,figure{margin:0}
ul{list-style:none;padding:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.mono{font-variant-numeric:tabular-nums;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--radius-pill);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease);
}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 0 0 1px rgba(122,92,255,.45),0 14px 34px -14px rgba(122,92,255,.7)}
.btn-primary:hover{background:#8B70FF;transform:translateY(-2px)}
.btn-cta{background:var(--cta);color:#1A0A02;box-shadow:0 0 0 1px rgba(255,122,69,.5),0 14px 34px -14px rgba(255,122,69,.65)}
.btn-cta:hover{background:#FF8D5F;transform:translateY(-2px)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text-1)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand)}
.btn-link{background:none;border:none;padding:0;font-size:15px;font-weight:600;color:var(--accent);position:relative;cursor:pointer}
.btn-link::after{content:"";position:absolute;left:0;bottom:-3px;height:2px;width:0;background:var(--accent);transition:width .22s var(--ease)}
.btn-link:hover::after{width:100%}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(6,9,19,.55);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease);
}
.site-header.scrolled{background:rgba(6,9,19,.9);border-bottom-color:var(--line)}
.brand-row{display:flex;align-items:center;gap:16px;height:72px}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{width:34px;height:34px;flex:none}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.spacer{flex:1}
.brand-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--radius-pill);background:transparent;border:1px solid var(--line);
  color:var(--text-2);cursor:pointer;transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{color:var(--text-1);border-color:var(--line-strong);background:var(--brand-soft)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--radius-pill);
  background:transparent;border:1px solid var(--line);cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{width:17px;height:2px;background:var(--text-1);border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease)}
.site-header.nav-open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header.nav-open .nav-toggle span:nth-child(2){opacity:0}
.site-header.nav-open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.channel-row{border-top:1px solid var(--line)}
.channel-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:48px}
.channel-nav{display:flex;align-items:center;gap:8px}
.channel-nav a{
  padding:7px 15px;border-radius:var(--radius-pill);font-size:14px;color:var(--text-2);
  transition:color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.channel-nav a:hover{color:var(--text-1);background:var(--brand-soft)}
.channel-nav a.is-active{color:var(--text-1);background:var(--brand-soft);box-shadow:inset 0 -2px 0 var(--brand)}
.channel-status{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.channel-status .dot{width:7px;height:7px;border-radius:50%;background:var(--success);box-shadow:0 0 0 4px rgba(53,208,127,.16)}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-3);padding:28px 0 18px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-3);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--text-1)}
.breadcrumb span[aria-current]{color:var(--text-2)}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background-image:
    radial-gradient(760px 380px at 12% 6%,rgba(122,92,255,.20),transparent 62%),
    radial-gradient(620px 340px at 92% 30%,rgba(34,211,197,.14),transparent 64%),
    linear-gradient(180deg,rgba(6,9,19,.86),rgba(6,9,19,.96)),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover,cover,cover,cover;
  background-position:center,center,center,center;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.16;
  background-image:linear-gradient(rgba(255,255,255,.35) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.35) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(70% 70% at 50% 20%,#000,transparent 78%);
  -webkit-mask-image:radial-gradient(70% 70% at 50% 20%,#000,transparent 78%);
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;padding:24px 0 88px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);
  font-weight:600;margin-bottom:18px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent);opacity:.7}
.page-hero h1{font-size:clamp(30px,5.2vw,50px);line-height:1.18;font-weight:800;letter-spacing:-.01em;max-width:16em}
.hero-sub{margin-top:20px;color:var(--text-2);font-size:17px;line-height:1.85;max-width:36em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{display:flex;flex-wrap:wrap;gap:0;margin-top:40px}
.hero-stats li{padding:0 26px;border-left:1px solid var(--line)}
.hero-stats li:first-child{padding-left:0;border-left:none}
.hero-stats strong{display:block;font-size:24px;font-weight:700;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums}
.hero-stats span{display:block;font-size:12px;color:var(--text-3);margin-top:4px}
.hero-media{position:relative;border-radius:18px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card);aspect-ratio:16/11;background:var(--surface-1)}
.hero-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.hero-media:hover img{transform:scale(1.03)}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 42%,rgba(6,9,19,.82));pointer-events:none}
.hero-media figcaption{position:absolute;left:20px;bottom:18px;z-index:2;font-size:13px;color:var(--text-2);max-width:80%}
.float-card{
  position:absolute;right:18px;top:18px;z-index:2;
  display:flex;flex-direction:column;gap:4px;padding:14px 18px;border-radius:14px;
  background:var(--glass);border:1px solid rgba(255,255,255,.10);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.float-num{font-size:16px;font-weight:700;color:var(--accent)}
.float-text{font-size:12px;color:var(--text-2);max-width:15em;line-height:1.6}

/* ---------- 主体布局 ---------- */
.page-main{padding:72px 0 8px}
.main-grid{display:grid;grid-template-columns:240px minmax(0,1fr);gap:56px;align-items:start}

/* 锚点树 */
.anchor-rail{position:sticky;top:152px}
.rail-card{
  padding:22px;border-radius:var(--radius-card);border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(122,92,255,.10),rgba(34,211,197,.045));
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
}
.rail-title{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--text-3);margin-bottom:14px}
.rail-nav{display:flex;flex-direction:column;gap:4px}
.rail-nav a{
  display:block;padding:10px 12px;border-radius:10px;font-size:14px;color:var(--text-2);
  border-left:2px solid transparent;transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.rail-nav a:hover{color:var(--text-1);background:rgba(255,255,255,.04)}
.rail-nav a.is-active{color:var(--text-1);background:var(--brand-soft);border-left-color:var(--brand)}
.rail-stat{margin-top:20px;padding-top:18px;border-top:1px solid var(--line)}
.rail-num{display:block;font-size:24px;font-weight:700;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums;color:var(--accent)}
.rail-label{display:block;font-size:13px;color:var(--text-3);margin-top:4px}

/* 内容流 */
.content-flow{display:flex;flex-direction:column}
.doc-block{padding:0 0 56px;margin-bottom:56px;border-bottom:1px solid var(--line)}
.doc-block:last-of-type{border-bottom:none;margin-bottom:0;padding-bottom:24px}
.block-head{display:flex;align-items:baseline;gap:14px;margin-bottom:20px}
.block-num{font-size:13px;font-weight:700;color:var(--accent);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;letter-spacing:.08em}
.doc-block h2{font-size:clamp(23px,3vw,31px);line-height:1.3;font-weight:700}
.doc-block p{color:var(--text-2);max-width:38em;font-size:16px}
.doc-block p + p{margin-top:1em}
.doc-block h3{font-size:20px;font-weight:600;margin:28px 0 10px}
.media-wide{
  margin-top:28px;border-radius:16px;overflow:hidden;border:1px solid var(--line);
  background:var(--surface-1);aspect-ratio:21/9;position:relative;box-shadow:var(--shadow-card);
}
.media-wide img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.media-wide:hover img{transform:scale(1.03)}
.media-wide::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,9,19,.06),rgba(6,9,19,.55));pointer-events:none}
.media-caption{margin-top:12px;font-size:13px;color:var(--text-3)}

.table-wrap{margin-top:26px;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--surface-1)}
.data-table{width:100%;border-collapse:collapse;font-size:14px}
.data-table th,.data-table td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line)}
.data-table th{background:var(--surface-2);color:var(--text-1);font-weight:600;white-space:nowrap}
.data-table td{color:var(--text-2)}
.data-table tr:last-child td{border-bottom:none}
.data-table tbody tr{transition:background .2s var(--ease)}
.data-table tbody tr:hover{background:rgba(255,255,255,.03)}
.tag{
  display:inline-block;padding:4px 10px;border-radius:var(--radius-pill);font-size:12px;line-height:1;
  border:1px solid rgba(34,211,197,.42);background:rgba(34,211,197,.10);color:#7FE9E0;white-space:nowrap;
}
.tag-purple{border-color:rgba(122,92,255,.45);background:var(--brand-soft);color:#C4B6FF}
.tag-warm{border-color:rgba(255,177,61,.42);background:rgba(255,177,61,.10);color:#FFCF85}
.tag-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.block-cta{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.block-note{font-size:13px;color:var(--text-3)}

/* 要点列表 */
.point-list{margin-top:20px;display:grid;gap:12px}
.point-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2);line-height:1.8}
.point-list li::before{
  content:"";flex:none;width:6px;height:6px;border-radius:50%;background:var(--accent);
  margin-top:11px;box-shadow:0 0 0 4px rgba(34,211,197,.12);
}

/* ---------- FAQ ---------- */
.faq-section{padding:72px 0;border-top:1px solid var(--line)}
.faq-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:56px;align-items:start}
.faq-grid h2{font-size:clamp(24px,3.2vw,31px);line-height:1.3;font-weight:700}
.faq-intro{margin-top:16px;color:var(--text-2);font-size:15px;max-width:28em}
.faq-item{
  border:1px solid var(--line);background:var(--surface-1);border-radius:14px;overflow:hidden;
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.faq-item + .faq-item{margin-top:12px}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:flex-start;gap:16px;
  padding:16px 20px;font-size:16px;font-weight:600;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:none;font-size:20px;line-height:1;color:var(--accent);
  transition:transform .22s var(--ease);
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{padding:0 20px 18px;border-top:1px solid var(--line);color:var(--text-2);font-size:15px;line-height:1.85;margin-top:2px}
.faq-body p{padding-top:14px}

/* ---------- 底部 CTA ---------- */
.final-cta{padding:0 0 96px}
.cta-banner{
  position:relative;overflow:hidden;border-radius:24px;padding:72px 40px;text-align:center;
  border:1px solid var(--line);
  background-image:
    radial-gradient(560px 280px at 50% 0%,rgba(255,122,69,.18),transparent 66%),
    radial-gradient(520px 300px at 12% 100%,rgba(122,92,255,.20),transparent 68%),
    linear-gradient(160deg,rgba(122,92,255,.10),rgba(34,211,197,.045));
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
}
.cta-banner::before{
  content:"";position:absolute;inset:0;opacity:.12;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.4) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.4) 1px,transparent 1px);
  background-size:56px 56px;
}
.cta-banner h2{position:relative;font-size:clamp(24px,3.6vw,34px);line-height:1.32;font-weight:700}
.cta-banner p{position:relative;margin-top:16px;color:var(--text-2);font-size:16px;max-width:34em;margin-left:auto;margin-right:auto}
.cta-actions{position:relative;margin-top:32px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg-deep);padding:64px 0 32px}
.footer-brand{display:flex;flex-wrap:wrap;align-items:center;gap:20px;padding-bottom:36px;border-bottom:1px solid var(--line)}
.footer-brand .brand-name{font-size:17px;font-weight:700}
.footer-desc{color:var(--text-3);font-size:14px;max-width:26em}
.footer-actions{margin-left:auto;display:flex;gap:22px;font-size:14px}
.footer-actions a{color:var(--text-2);position:relative;transition:color .2s var(--ease)}
.footer-actions a::after{content:"";position:absolute;left:0;bottom:-4px;height:2px;width:0;background:var(--brand);transition:width .22s var(--ease)}
.footer-actions a:hover{color:var(--text-1)}
.footer-actions a:hover::after{width:100%}
.footer-cols{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:32px;padding:40px 0}
.footer-col-title{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--text-3);margin-bottom:16px}
.footer-cols li + li{margin-top:10px}
.footer-cols a{font-size:14px;color:var(--text-2);display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-cols a:hover{color:var(--text-1);transform:translateX(2px)}
.footer-legal{display:flex;flex-wrap:wrap;gap:12px 28px;align-items:center;justify-content:space-between;padding-top:28px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3)}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .hero-media:hover img,.media-wide:hover img{transform:none}
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero-grid{gap:40px}
  .main-grid{grid-template-columns:220px minmax(0,1fr);gap:40px}
}
@media (max-width:1023px){
  .nav-toggle{display:flex}
  .channel-row{display:none;border-top:1px solid var(--line)}
  .site-header.nav-open .channel-row{display:block;position:absolute;left:0;right:0;top:100%;background:rgba(10,15,31,.98);backdrop-filter:blur(14px);padding:12px 0 18px;border-bottom:1px solid var(--line)}
  .site-header.nav-open .channel-inner{flex-direction:column;align-items:stretch;height:auto;gap:6px}
  .site-header.nav-open .channel-nav{flex-direction:column;gap:4px}
  .site-header.nav-open .channel-nav a{padding:14px 16px;border-radius:12px;font-size:15px}
  .site-header.nav-open .channel-status{display:none}
  .hero-grid{grid-template-columns:1fr;padding-bottom:64px}
  .page-hero h1{max-width:none}
  .hero-media{order:-1}
  .main-grid{grid-template-columns:1fr;gap:32px}
  .anchor-rail{position:static}
  .rail-card{padding:16px}
  .rail-nav{flex-direction:row;overflow-x:auto;gap:8px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch}
  .rail-nav::-webkit-scrollbar{display:none}
  .rail-nav a{white-space:nowrap;border-left:none;border:1px solid var(--line);border-radius:var(--radius-pill);padding:10px 16px;scroll-snap-align:start}
  .rail-nav a.is-active{border-color:var(--line-strong);box-shadow:none}
  .rail-stat{display:none}
  .faq-grid{grid-template-columns:1fr;gap:32px}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .brand-row{height:60px}
  .brand-name{font-size:16px}
  .brand-actions .btn-ghost,.brand-actions .icon-btn{display:none}
  .page-hero h1{font-size:clamp(27px,7.2vw,36px)}
  .hero-sub{font-size:16px}
  .hero-stats li{padding:0 16px}
  .hero-stats strong{font-size:20px}
  .page-main{padding:56px 0 8px}
  .doc-block{padding-bottom:40px;margin-bottom:40px}
  .media-wide{aspect-ratio:16/10}
  .faq-section{padding:56px 0}
  .final-cta{padding:0 0 64px}
  .cta-banner{padding:52px 22px}
  .site-footer{padding:48px 0 26px}
  .footer-brand{gap:14px}
  .footer-actions{margin-left:0;width:100%}
  .footer-cols{grid-template-columns:1fr;gap:26px;padding:32px 0}
  .footer-legal{flex-direction:column;align-items:flex-start;gap:8px}
  .data-table th,.data-table td{padding:12px 14px}
}
@media (max-width:519px){
  .hero-actions .btn{width:100%}
  .hero-stats{gap:18px 0}
  .hero-stats li{padding:0 14px}
  .float-card{right:12px;top:12px;padding:12px 14px}
  .float-text{max-width:12em}
  .block-cta .btn{width:100%}
  .cta-actions .btn{width:100%}
  .table-wrap{overflow-x:auto}
}