/* roulang page: index */
:root{
  --bg:#060A16;
  --bg-deep:#04070F;
  --panel:#0C1424;
  --glass:rgba(255,255,255,.05);
  --glass-strong:rgba(255,255,255,.08);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(31,214,192,.4);
  --primary:#1FD6C0;
  --secondary:#6C63FF;
  --accent:#FFB84D;
  --danger:#FF5D6C;
  --text:#EAF2FF;
  --sub:#9FB0CC;
  --muted:#6C7C99;
  --radius:16px;
  --radius-btn:12px;
  --shadow:0 20px 60px rgba(0,0,0,.45);
  --glow:0 0 28px rgba(31,214,192,.25);
  --grad:linear-gradient(135deg,#1FD6C0 0%,#6C63FF 100%);
  --sans:"PingFang SC","HarmonyOS Sans","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --ease:220ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.7;
  letter-spacing:.01em;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:48px 48px;
}
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(680px 420px at 8% 4%,rgba(31,214,192,.08),transparent 70%),
    radial-gradient(760px 480px at 96% 88%,rgba(108,99,255,.08),transparent 72%);
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;position:relative;z-index:2}
.mono{font-family:var(--mono);letter-spacing:.02em}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,22,.72);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color var(--ease),background var(--ease);
}
.site-header.scrolled{border-bottom-color:var(--line);background:rgba(6,10,22,.92)}
.brand-row{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.logo-mark{
  width:38px;height:38px;border-radius:12px;position:relative;flex:0 0 auto;
  background:var(--grad);box-shadow:0 0 22px rgba(31,214,192,.35);
  display:grid;place-items:center;
}
.logo-mark::before{
  content:"";width:13px;height:19px;border-radius:3px 3px 0 0;
  background:rgba(6,10,22,.85);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.35);
}
.logo-mark::after{
  content:"";position:absolute;width:24px;height:2px;border-radius:2px;
  background:rgba(6,10,22,.55);bottom:9px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.02em}
.brand-sub{font-size:12px;color:var(--muted);font-style:normal;letter-spacing:.14em}
.brand-tools{display:flex;align-items:center;gap:10px}
.search-pill{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 6px 0 14px;
  background:var(--glass);border:1px solid var(--line);border-radius:999px;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.search-pill:focus-within{border-color:var(--line-strong);box-shadow:var(--glow)}
.search-pill i{color:var(--muted);font-size:13px}
.search-pill input{
  width:190px;height:100%;background:transparent;border:0;outline:none;font-size:14px;
}
.search-pill input::placeholder{color:var(--muted);font-size:13px}
.search-btn{
  width:30px;height:30px;border-radius:999px;background:var(--glass-strong);
  display:grid;place-items:center;color:var(--sub);font-size:12px;transition:var(--ease);
}
.search-btn:hover{color:var(--primary);background:rgba(31,214,192,.14)}
.icon-btn{
  width:40px;height:40px;border-radius:999px;border:1px solid var(--line);
  background:var(--glass);color:var(--sub);display:grid;place-items:center;
  transition:var(--ease);font-size:14px;
}
.icon-btn:hover{color:var(--primary);border-color:var(--line-strong)}
.menu-btn{
  display:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
  background:var(--glass);color:var(--text);place-items:center;font-size:15px;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;white-space:nowrap;
  border:1px solid transparent;transition:var(--ease);
}
.btn i{font-size:13px}
.btn-primary{
  background:var(--grad);color:#04121A;
  box-shadow:0 0 24px rgba(31,214,192,.35);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 34px rgba(31,214,192,.5)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-ghost{
  background:var(--glass);border-color:var(--line);color:var(--text);
  backdrop-filter:blur(14px);
}
.btn-ghost:hover{border-color:var(--line-strong);color:var(--primary);transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.channel-row{border-top:1px solid var(--line);height:48px;display:flex;align-items:center}
.channel-scroll{
  display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;
  height:100%;
}
.channel-scroll::-webkit-scrollbar{display:none}
.channel{
  position:relative;height:34px;display:inline-flex;align-items:center;
  padding:0 16px;border-radius:999px;font-size:14px;color:var(--sub);
  white-space:nowrap;transition:var(--ease);
}
.channel:hover{color:var(--text);background:var(--glass)}
.channel.active{
  color:var(--primary);background:rgba(31,214,192,.12);
}
.channel.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:-8px;height:2px;
  border-radius:2px;background:var(--grad);box-shadow:0 0 12px rgba(31,214,192,.6);
}
.drawer{
  position:fixed;inset:0;z-index:70;display:none;
  background:rgba(4,7,15,.7);backdrop-filter:blur(6px);
}
.drawer.open{display:block}
.drawer-panel{
  position:absolute;top:0;right:0;width:min(340px,88vw);height:100%;
  background:var(--panel);border-left:1px solid var(--line);
  padding:24px 22px;display:flex;flex-direction:column;gap:8px;
  box-shadow:-30px 0 60px rgba(0,0,0,.5);animation:slideIn var(--ease);
}
@keyframes slideIn{from{transform:translateX(24px);opacity:.4}to{transform:translateX(0);opacity:1}}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.drawer-head strong{font-size:15px}
.drawer-panel a.drawer-link{
  padding:13px 14px;border-radius:12px;color:var(--sub);font-size:15px;
  border:1px solid transparent;transition:var(--ease);
}
.drawer-panel a.drawer-link:hover,.drawer-panel a.drawer-link.active{
  color:var(--primary);background:rgba(31,214,192,.1);border-color:var(--line);
}
.drawer-panel .btn{margin-top:12px;width:100%}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  min-height:82vh;display:flex;align-items:center;
  padding:72px 0 64px;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,22,.86) 0%,rgba(6,10,22,.78) 45%,rgba(6,10,22,.96) 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px) 0 0/48px 48px,
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px) 0 0/48px 48px,
    radial-gradient(520px 320px at 18% 30%,rgba(31,214,192,.12),transparent 70%);
}
.hero-inner{position:relative;z-index:3;max-width:760px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;
  border-radius:999px;border:1px solid var(--line);background:var(--glass);
  font-size:13px;color:var(--primary);margin-bottom:22px;
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px var(--primary)}
.hero h1{
  font-size:clamp(30px,4.4vw,52px);line-height:1.2;font-weight:700;
  letter-spacing:.01em;margin-bottom:18px;
}
.hero h1 span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:17px;color:var(--sub);max-width:560px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:44px}
.stat-bar{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;
  padding:20px 22px;border-radius:var(--radius);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(14px);box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow);
}
.stat{display:flex;flex-direction:column;gap:4px}
.stat-num{font-family:var(--mono);font-size:24px;font-weight:600;letter-spacing:.02em;color:var(--primary)}
.stat-label{font-size:13px;color:var(--muted)}

/* ---------- sections ---------- */
.section{padding:88px 0;position:relative;z-index:2}
.section.tight{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px}
.section-title{font-size:clamp(22px,2.6vw,32px);font-weight:600;line-height:1.3;margin-bottom:10px}
.section-sub{font-size:15px;color:var(--sub);max-width:640px}
.more-link{font-size:14px;color:var(--primary);display:inline-flex;align-items:center;gap:6px;white-space:nowrap;transition:var(--ease)}
.more-link:hover{gap:10px;text-shadow:0 0 16px rgba(31,214,192,.5)}
.card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow),var(--glow)}

/* quick entries */
.quick-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px}
.quick-card{padding:22px 20px;display:flex;flex-direction:column;gap:12px}
.quick-icon{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:rgba(31,214,192,.12);color:var(--primary);font-size:15px;
}
.quick-card h3{font-size:16px;font-weight:600}
.quick-card p{font-size:13px;color:var(--muted);line-height:1.65}

/* intro asymmetric */
.intro-grid{display:grid;grid-template-columns:7fr 5fr;gap:22px;align-items:stretch}
.intro-main{padding:0;overflow:hidden;display:flex;flex-direction:column}
.intro-media{position:relative;aspect-ratio:16/9;overflow:hidden;border-radius:16px 16px 0 0;background:linear-gradient(135deg,rgba(31,214,192,.18),rgba(108,99,255,.18))}
.intro-media img{width:100%;height:100%;object-fit:cover}
.intro-body{padding:26px 28px 28px}
.num{
  font-family:var(--mono);font-size:14px;color:var(--primary);
  letter-spacing:.08em;margin-bottom:12px;display:block;
}
.intro-body h3{font-size:21px;font-weight:600;margin-bottom:12px}
.intro-body p{font-size:15px;color:var(--sub)}
.intro-side{display:grid;gap:22px;grid-template-rows:1fr 1fr}
.intro-side .card{padding:24px 24px 26px;display:flex;flex-direction:column;justify-content:center}

/* benefits */
.benefit-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.benefit-card{padding:26px 26px 28px;display:flex;flex-direction:column;gap:14px}
.benefit-card.wide{grid-column:span 1}
.benefit-icon{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(31,214,192,.16),rgba(108,99,255,.16));
  color:var(--primary);font-size:16px;
}
.benefit-value{font-family:var(--mono);font-size:30px;font-weight:600;color:var(--text);letter-spacing:.02em}
.benefit-value em{font-style:normal;font-size:14px;color:var(--muted);margin-left:6px;font-family:var(--sans)}
.benefit-card h3{font-size:17px;font-weight:600}
.benefit-card p{font-size:14px;color:var(--muted)}
.benefit-card.highlight{border-color:rgba(255,184,77,.3)}
.benefit-card.highlight .benefit-icon{color:var(--accent);background:rgba(255,184,77,.12)}

/* steps */
.steps-wrap{padding:38px 34px;border-radius:var(--radius);background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px)}
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;position:relative}
.steps::before{
  content:"";position:absolute;left:6%;right:6%;top:11px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,rgba(31,214,192,.85),rgba(108,99,255,.7),rgba(31,214,192,.12));
}
.step{position:relative;display:flex;flex-direction:column;gap:12px;padding-right:18px}
.step-dot{
  width:24px;height:24px;border-radius:50%;display:grid;place-items:center;
  background:var(--panel);border:2px solid rgba(31,214,192,.5);
  font-family:var(--mono);font-size:11px;color:var(--primary);position:relative;z-index:2;
}
.step.active .step-dot{
  background:var(--grad);color:#04121A;border-color:transparent;
  box-shadow:0 0 0 4px rgba(31,214,192,.15),0 0 18px rgba(31,214,192,.45);
}
.step.dim{opacity:.62}
.step h4{font-size:16px;font-weight:600}
.step p{font-size:13px;color:var(--muted)}

/* cta band */
.cta-band{
  border-radius:var(--radius);border:1px solid var(--line);
  background:linear-gradient(135deg,rgba(31,214,192,.08),rgba(108,99,255,.08));
  padding:44px 40px;display:flex;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band h2{font-size:clamp(20px,2.4vw,28px);font-weight:600;margin-bottom:10px}
.cta-band p{font-size:15px;color:var(--sub);max-width:560px}
.cta-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap}

/* news */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.news-card{overflow:hidden;display:flex;flex-direction:column}
.news-media{
  display:block;position:relative;aspect-ratio:16/9;overflow:hidden;border-radius:15px 15px 0 0;
  background:linear-gradient(135deg,rgba(31,214,192,.2),rgba(108,99,255,.2));
}
.news-media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms ease}
.news-card:hover .news-media img{transform:scale(1.04)}
.news-media .ph{
  position:absolute;inset:0;display:grid;place-items:center;color:rgba(255,255,255,.7);font-size:20px;
}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.badge{
  align-self:flex-start;height:26px;display:inline-flex;align-items:center;
  padding:0 12px;border-radius:999px;font-size:12px;letter-spacing:.04em;
  background:rgba(108,99,255,.16);color:var(--primary);
}
.badge.accent{background:rgba(255,184,77,.14);color:var(--accent)}
.news-body h3{font-size:17px;font-weight:600;line-height:1.5}
.news-body h3 a{transition:var(--ease)}
.news-body h3 a:hover{color:var(--primary)}
.news-body p{
  font-size:14px;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body h3.clamp2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--muted);
}
.news-date{font-family:var(--mono);letter-spacing:.02em}
.news-arrow{color:var(--primary);transition:var(--ease)}
.news-card:hover .news-arrow{transform:translateX(4px)}
.empty-state{
  border:1px dashed rgba(255,255,255,.18);border-radius:var(--radius);
  padding:56px 24px;text-align:center;background:var(--glass);
  display:flex;flex-direction:column;align-items:center;gap:14px;
}
.empty-state i{font-size:26px;color:var(--primary)}
.empty-state p{color:var(--sub);font-size:15px}

/* faq */
.faq-list{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--glass);backdrop-filter:blur(14px)}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;text-align:left;font-size:16px;font-weight:600;color:var(--text);
  transition:var(--ease);position:relative;
}
.faq-q:hover{color:var(--primary);background:rgba(255,255,255,.03)}
.faq-item.open .faq-q{color:var(--primary)}
.faq-item.open .faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;
  background:var(--grad);box-shadow:0 0 14px rgba(31,214,192,.6);
}
.faq-icon{
  width:26px;height:26px;flex:0 0 auto;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;font-size:12px;color:var(--sub);transition:var(--ease);
}
.faq-item.open .faq-icon{color:var(--primary);border-color:var(--line-strong);transform:rotate(180deg)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height 240ms ease,padding 240ms ease;
  padding:0 24px;color:var(--sub);font-size:15px;
}
.faq-item.open .faq-a{max-height:280px;padding:0 24px 24px 40px}

/* dual glass */
.dual-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.glass-card{padding:28px 28px 30px}
.glass-card h2{font-size:20px;font-weight:600;margin-bottom:16px}
.link-list{display:grid;grid-template-columns:1fr 1fr;gap:10px 16px}
.link-list a{
  display:flex;align-items:center;gap:8px;font-size:14px;color:var(--sub);
  padding:9px 12px;border-radius:10px;border:1px solid transparent;transition:var(--ease);
}
.link-list a:hover{color:var(--primary);border-color:var(--line);background:rgba(31,214,192,.06)}
.link-list a::before{content:"›";color:var(--primary);font-size:15px;line-height:1}
.sub-form{display:flex;gap:10px;margin-top:16px}
.sub-form input{
  flex:1;height:48px;padding:0 16px;border-radius:var(--radius-btn);
  background:rgba(255,255,255,.04);border:1px solid var(--line);outline:none;
  font-size:14px;transition:var(--ease);
}
.sub-form input::placeholder{color:var(--muted)}
.sub-form input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(31,214,192,.14)}
.form-tip{font-size:13px;color:var(--muted);margin-top:12px}
.contact-line{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--sub);padding:10px 0;border-bottom:1px dashed var(--line)}
.contact-line:last-of-type{border-bottom:0}
.contact-line i{color:var(--primary);width:16px;text-align:center}

/* footer */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);margin-top:20px;position:relative;z-index:2}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:36px;padding:64px 0 40px}
.footer-brand{display:flex;flex-direction:column;gap:14px}
.footer-brand .brand-name{font-size:17px}
.footer-brand p{font-size:14px;color:var(--muted);max-width:280px}
.footer-col h3{font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--sub);transition:var(--ease)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);
}
.footer-bottom .mono{letter-spacing:.02em}

/* responsive */
@media (max-width:1200px){
  .quick-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .benefit-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1024px){
  .search-pill{display:none}
  .menu-btn{display:grid}
  .channel-row{display:none}
  .brand-row{height:60px}
  .quick-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .intro-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:48px 0 32px}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .steps::before{display:none}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .section.tight{padding:44px 0}
  .hero{padding:56px 0 48px;min-height:auto}
  .hero-actions .btn{flex:1 1 auto}
  .stat-bar{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px 24px}
  .dual-grid{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start}
  .steps{grid-template-columns:1fr;gap:0}
  .steps::after{
    content:"";position:absolute;left:11px;top:16px;bottom:16px;width:2px;
    background:linear-gradient(180deg,rgba(31,214,192,.8),rgba(108,99,255,.2));
  }
  .step{flex-direction:row;gap:16px;padding:0 0 26px}
  .step h4{margin-bottom:2px}
}
@media (max-width:520px){
  .wrap{padding:0 18px}
  .hero h1{font-size:27px}
  .hero-sub{font-size:15px}
  .brand-sub{display:none}
  .quick-grid,.benefit-grid,.news-grid,.link-list{grid-template-columns:1fr}
  .card,.quick-card,.benefit-card,.glass-card{padding:18px}
  .news-body{padding:16px 18px 18px}
  .btn{width:100%}
  .hero-actions{flex-direction:column}
  .sub-form{flex-direction:column}
  .stat-num{font-size:20px}
  .footer-grid{grid-template-columns:1fr;padding:40px 0 26px}
}

/* roulang page: article */
:root{
  --bg:#060A16;
  --bg-deep:#04070F;
  --panel:#0C1424;
  --glass:rgba(255,255,255,.05);
  --glass-2:rgba(255,255,255,.035);
  --line:rgba(255,255,255,.08);
  --line-hot:rgba(31,214,192,.4);
  --main:#1FD6C0;
  --sub:#6C63FF;
  --accent:#FFB84D;
  --danger:#FF5D6C;
  --text:#EAF2FF;
  --text-2:#9FB0CC;
  --text-3:#6C7C99;
  --r-lg:16px;
  --r-md:12px;
  --r-pill:999px;
  --shadow:0 20px 60px rgba(0,0,0,.45);
  --glow:0 0 28px rgba(31,214,192,.25);
  --grad:linear-gradient(135deg,#1FD6C0 0%,#6C63FF 100%);
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --dur:220ms ease;
  --maxw:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Noto Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:48px 48px;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(520px 380px at 8% 0%,rgba(31,214,192,.09),transparent 70%),
    radial-gradient(560px 420px at 96% 92%,rgba(108,99,255,.09),transparent 70%);
}
img{max-width:100%;display:block;border-radius:var(--r-md);}
a{color:inherit;text-decoration:none;transition:color var(--dur);}
a:hover{color:var(--main);}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--main);outline-offset:2px;border-radius:6px;}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;position:relative;z-index:2;}
.mono{font-family:var(--mono);letter-spacing:.02em;}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(6,10,22,.78);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color var(--dur),background var(--dur);
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(6,10,22,.92);}
.brand-row{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px;}
.brand{display:flex;align-items:center;gap:12px;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 34px;
  background:var(--grad);
  box-shadow:0 0 20px rgba(31,214,192,.35);
  position:relative;
}
.logo-mark::before{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:12px;height:16px;border:2px solid rgba(6,10,22,.85);border-radius:2px;border-bottom-color:transparent;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:16px;font-weight:700;letter-spacing:.02em;color:var(--text);}
.brand-sub{font-size:11px;font-style:normal;color:var(--text-3);letter-spacing:.08em;}
.brand-tools{display:flex;align-items:center;gap:10px;}
.search-pill{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 6px 0 14px;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-pill);
  transition:border-color var(--dur),box-shadow var(--dur);
}
.search-pill:focus-within{border-color:var(--line-hot);box-shadow:var(--glow);}
.search-pill i{color:var(--text-3);font-size:13px;}
.search-pill input{
  width:190px;border:0;background:transparent;color:var(--text);
  font-size:14px;outline:none;font-family:inherit;
}
.search-pill input::placeholder{color:var(--text-3);}
.search-btn{
  width:30px;height:30px;border:0;border-radius:50%;
  background:rgba(31,214,192,.14);color:var(--main);
  display:grid;place-items:center;font-size:12px;transition:background var(--dur);
}
.search-btn:hover{background:rgba(31,214,192,.26);}
.icon-btn{
  width:40px;height:40px;border-radius:50%;
  background:var(--glass);border:1px solid var(--line);color:var(--text-2);
  display:grid;place-items:center;font-size:14px;transition:all var(--dur);
}
.icon-btn:hover{color:var(--main);border-color:var(--line-hot);transform:translateY(-2px);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform var(--dur),box-shadow var(--dur),border-color var(--dur),background var(--dur),color var(--dur);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--grad);color:#04121A;box-shadow:0 10px 32px rgba(31,214,192,.28);}
.btn-primary:hover{color:#04121A;transform:translateY(-2px);box-shadow:0 14px 38px rgba(31,214,192,.4);}
.btn-primary:active{transform:translateY(1px);filter:brightness(.95);}
.btn-ghost{background:var(--glass);border-color:var(--line);color:var(--text);}
.btn-ghost:hover{color:var(--main);border-color:var(--line-hot);transform:translateY(-2px);box-shadow:var(--glow);}
.menu-btn{
  display:none;width:40px;height:40px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line);color:var(--text);
  place-items:center;font-size:15px;
}
.channel-row{border-top:1px solid var(--line);}
.channel-scroll{display:flex;align-items:center;gap:8px;height:48px;overflow-x:auto;scrollbar-width:none;}
.channel-scroll::-webkit-scrollbar{display:none;}
.channel{
  position:relative;white-space:nowrap;
  padding:0 16px;height:34px;display:inline-flex;align-items:center;
  border-radius:var(--r-pill);font-size:14px;color:var(--text-2);
  transition:all var(--dur);
}
.channel:hover{color:var(--text);background:rgba(255,255,255,.05);}
.channel.active{color:var(--main);background:rgba(31,214,192,.12);}
.channel.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:-7px;height:2px;
  background:var(--grad);border-radius:2px;box-shadow:0 0 12px rgba(31,214,192,.7);
}
.drawer{display:none;}

/* ---------- article hero ---------- */
.article-hero{
  position:relative;
  padding:40px 0 34px;
  background-image:linear-gradient(180deg,rgba(6,10,22,.86),rgba(6,10,22,.96)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px;}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--main);}
.breadcrumb .sep{opacity:.6;}
.breadcrumb .current{color:var(--text-2);}
.article-hero h1{
  margin:0 0 18px;
  font-size:clamp(26px,3.6vw,42px);
  line-height:1.28;font-weight:700;letter-spacing:.01em;
  max-width:900px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:13px;color:var(--text-3);}
.meta-row .badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:rgba(108,99,255,.18);color:#B9B5FF;font-size:12px;font-weight:600;
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);}
.meta-row .mono{color:var(--text-2);}

/* ---------- layout ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:36px;
  padding:56px 0 72px;
  align-items:start;
}
.article-main{min-width:0;}
.article-card{
  background:var(--glass-2);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow);
  padding:32px 34px 36px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow);
}
.article-body{max-width:760px;font-size:16.5px;line-height:1.85;color:#D9E4F5;}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1em;}
.article-body > p:first-of-type{font-size:18px;color:var(--text);}
.article-body h2{
  position:relative;
  margin:44px 0 18px;padding-left:16px;
  font-size:clamp(21px,2.3vw,28px);line-height:1.4;font-weight:600;color:var(--text);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;
  background:var(--grad);border-radius:2px;box-shadow:0 0 14px rgba(31,214,192,.6);
}
.article-body h3{margin:32px 0 14px;font-size:20px;line-height:1.45;font-weight:600;color:var(--text);}
.article-body h4{margin:24px 0 12px;font-size:17px;font-weight:600;color:var(--text);}
.article-body ul,.article-body ol{margin:0 0 1.1em;padding-left:4px;}
.article-body li{position:relative;padding-left:22px;margin:0 0 .6em;}
.article-body ul > li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;
  background:var(--main);box-shadow:0 0 10px rgba(31,214,192,.6);
}
.article-body ol{counter-reset:li;}
.article-body ol > li{counter-increment:li;}
.article-body ol > li::before{
  content:counter(li);
  position:absolute;left:0;top:0;
  font-family:var(--mono);font-size:13px;color:var(--main);
}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;
  background:var(--glass);border-left:3px solid var(--main);border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{margin:24px auto;border-radius:var(--r-md);border:1px solid var(--line);}
.article-body figure{margin:24px 0;}
.article-body figcaption{margin-top:10px;text-align:center;font-size:13px;color:var(--text-3);}
.article-body a{color:var(--main);border-bottom:1px solid rgba(31,214,192,.35);}
.article-body a:hover{border-bottom-color:var(--main);}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:14.5px;
  border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;}
.article-body th{background:rgba(31,214,192,.08);color:var(--text);font-weight:600;}
.article-body tr:last-child td{border-bottom:0;}
.article-body code{
  font-family:var(--mono);font-size:13.5px;
  background:rgba(255,255,255,.07);padding:2px 6px;border-radius:6px;color:#B9F4EA;
}
.article-body hr{margin:36px 0;border:0;border-top:1px solid var(--line);}
.empty-state{
  border:1px dashed rgba(255,255,255,.16);
  border-radius:var(--r-lg);
  padding:56px 24px;text-align:center;
  background:var(--glass-2);
}
.empty-state i{font-size:30px;color:var(--text-3);margin-bottom:14px;display:block;}
.empty-state p{margin:0 0 20px;color:var(--text-2);}

/* ---------- tags + share ---------- */
.article-foot{
  margin-top:32px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:18px;justify-content:space-between;align-items:center;
}
.tag-list{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 13px;
  border-radius:var(--r-pill);background:rgba(255,255,255,.05);
  border:1px solid var(--line);font-size:12.5px;color:var(--text-2);
  transition:all var(--dur);
}
.tag:hover{color:var(--main);border-color:var(--line-hot);}
.share-list{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);}
.share-list button{
  width:36px;height:36px;border-radius:50%;
  background:var(--glass);border:1px solid var(--line);color:var(--text-2);
  display:grid;place-items:center;font-size:13px;transition:all var(--dur);
}
.share-list button:hover{color:var(--main);border-color:var(--line-hot);transform:translateY(-2px);}

/* ---------- sidebar ---------- */
.side-col{position:sticky;top:132px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--glass-2);
  border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px 22px 24px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),0 16px 44px rgba(0,0,0,.35);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.side-card h3{
  margin:0 0 14px;font-size:14px;font-weight:600;color:var(--text);
  display:flex;align-items:center;gap:8px;letter-spacing:.04em;
}
.side-card h3::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--main);box-shadow:0 0 10px rgba(31,214,192,.8);}
.toc-list li{margin:0 0 4px;}
.toc-list a{
  display:block;padding:7px 10px;border-radius:8px;
  font-size:13.5px;color:var(--text-2);
}
.toc-list a:hover{background:rgba(255,255,255,.05);color:var(--main);}
.mini-list li a{
  display:flex;gap:12px;align-items:center;padding:10px 0;
  border-bottom:1px dashed rgba(255,255,255,.07);
}
.mini-list li:last-child a{border-bottom:0;padding-bottom:0;}
.mini-thumb{
  width:88px;height:56px;flex:0 0 88px;border-radius:10px;overflow:hidden;
  background:linear-gradient(135deg,rgba(31,214,192,.22),rgba(108,99,255,.22));
  border:1px solid var(--line);
}
.mini-thumb img{width:100%;height:100%;object-fit:cover;border-radius:10px;}
.mini-text{min-width:0;}
.mini-text strong{
  display:block;font-size:13.5px;font-weight:600;color:var(--text);line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.mini-text span{font-size:12px;color:var(--text-3);font-family:var(--mono);}
.side-cta{
  background:linear-gradient(140deg,rgba(31,214,192,.14),rgba(108,99,255,.14));
  border:1px solid rgba(31,214,192,.28);
}
.side-cta p{margin:0 0 16px;font-size:13.5px;color:var(--text-2);line-height:1.7;}

/* ---------- related ---------- */
.related-section{padding:0 0 72px;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:26px;
}
.section-head h2{margin:0;font-size:clamp(21px,2.4vw,28px);font-weight:600;}
.section-head p{margin:6px 0 0;font-size:14px;color:var(--text-3);}
.link-more{font-size:14px;color:var(--main);display:inline-flex;align-items:center;gap:6px;}
.link-more:hover{gap:10px;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  display:flex;flex-direction:column;
  background:var(--glass-2);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),0 16px 44px rgba(0,0,0,.35);
  transition:transform var(--dur),border-color var(--dur),box-shadow var(--dur);
}
.card:hover{transform:translateY(-4px);border-color:var(--line-hot);box-shadow:inset 0 1px 0 rgba(255,255,255,.06),0 22px 56px rgba(0,0,0,.5),var(--glow);}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,rgba(31,214,192,.2),rgba(108,99,255,.2));}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.card-media .badge{
  position:absolute;left:12px;top:12px;
  height:24px;padding:0 11px;border-radius:var(--r-pill);
  background:rgba(6,10,22,.7);border:1px solid rgba(31,214,192,.35);
  color:var(--main);font-size:11.5px;font-weight:600;display:inline-flex;align-items:center;
  backdrop-filter:blur(8px);
}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{
  margin:0;font-size:16.5px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-body p{
  margin:0;font-size:13.5px;color:var(--text-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1;
}
.card-meta{
  display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--text-3);padding-top:6px;border-top:1px dashed rgba(255,255,255,.07);
}
.card-meta .mono{color:var(--text-3);}
.card-meta i{color:var(--main);}
.back-row{margin-top:34px;display:flex;justify-content:center;}

/* ---------- CTA band ---------- */
.cta-band{padding:0 0 84px;}
.cta-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  padding:34px 38px;border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(31,214,192,.1),rgba(108,99,255,.1));
  border:1px solid rgba(31,214,192,.24);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),0 20px 60px rgba(0,0,0,.4);
}
.cta-inner h2{margin:0 0 8px;font-size:clamp(20px,2.3vw,26px);font-weight:600;}
.cta-inner p{margin:0;font-size:14px;color:var(--text-2);max-width:620px;}
.cta-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--bg-deep);
  border-top:1px solid var(--line);
  padding:64px 0 0;
  position:relative;z-index:2;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;
  padding-bottom:44px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{margin:0;font-size:13.5px;color:var(--text-3);line-height:1.8;max-width:340px;}
.footer-col h3{margin:0 0 16px;font-size:14px;font-weight:600;color:var(--text);letter-spacing:.04em;}
.footer-col ul li{margin:0 0 10px;}
.footer-col a{font-size:13.5px;color:var(--text-3);}
.footer-col a:hover{color:var(--main);}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:20px 0 28px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:28px;}
}
@media (max-width:1024px){
  .search-pill input{width:140px;}
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .side-col{position:static;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:900px){
  .menu-btn{display:grid;}
  .channel-row{display:none;}
  .search-pill{display:none;}
  .drawer{
    display:none;position:absolute;left:0;right:0;top:100%;
    background:rgba(8,13,26,.98);border-bottom:1px solid var(--line);
    padding:16px 24px 24px;backdrop-filter:blur(16px);
  }
  .drawer.open{display:block;}
  .drawer a{
    display:block;padding:13px 14px;border-radius:10px;
    font-size:15px;color:var(--text-2);border:1px solid transparent;
  }
  .drawer a:hover,.drawer a.active{background:rgba(31,214,192,.1);color:var(--main);border-color:rgba(31,214,192,.25);}
  .drawer .btn{width:100%;margin-top:14px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:768px){
  .wrap{padding:0 18px;}
  .article-hero{padding:30px 0 26px;}
  .article-layout{padding:36px 0 56px;gap:28px;}
  .article-card{padding:24px 20px 26px;}
  .article-body{font-size:16px;}
  .article-body > p:first-of-type{font-size:17px;}
  .article-foot{flex-direction:column;align-items:flex-start;}
  .cta-inner{padding:26px 22px;}
  .related-section{padding-bottom:56px;}
  .cta-band{padding-bottom:60px;}
}
@media (max-width:520px){
  .brand-name{font-size:15px;}
  .brand-sub{font-size:10px;}
  .article-hero h1{font-size:26px;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:1fr;}
  .btn{width:100%;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .mini-thumb{width:74px;height:48px;flex:0 0 74px;}
}

/* roulang page: category1 */
:root{
  --bg:#060A16;
  --panel:#0C1424;
  --glass:rgba(255,255,255,.05);
  --glass-2:rgba(255,255,255,.035);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#1FD6C0;
  --secondary:#6C63FF;
  --accent:#FFB84D;
  --danger:#FF5D6C;
  --text:#EAF2FF;
  --text-2:#9FB0CC;
  --text-3:#6C7C99;
  --radius:16px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow:0 20px 60px rgba(0,0,0,.45);
  --glow:0 0 28px rgba(31,214,192,.25);
  --grad:linear-gradient(135deg,#1FD6C0 0%,#6C63FF 100%);
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --sans:"PingFang SC","HarmonyOS Sans","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 600px at 8% -6%,rgba(31,214,192,.08),transparent 62%),
    radial-gradient(900px 640px at 96% 104%,rgba(108,99,255,.08),transparent 62%),
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:auto,auto,48px 48px,48px 48px;
  background-attachment:fixed,fixed,scroll,scroll;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s ease,border-color .22s ease,opacity .22s ease;}
button,input{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.3;letter-spacing:.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(31,214,192,.28);}

.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
.mono{font-family:var(--mono);letter-spacing:.02em;}

/* ============ 品牌行 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(6,10,22,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,background .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(6,10,22,.9);}
.brand-row{display:flex;align-items:center;justify-content:space-between;gap:18px;height:64px;}
.brand{display:inline-flex;align-items:center;gap:12px;min-width:0;}
.logo-mark{
  position:relative;flex:none;width:36px;height:36px;border-radius:11px;
  background:var(--grad);
  box-shadow:0 0 22px rgba(31,214,192,.35);
}
.logo-mark::before{
  content:"";position:absolute;inset:9px 12px;border:2px solid rgba(6,10,22,.9);
  border-bottom-color:transparent;border-radius:6px 6px 0 0;
}
.logo-mark::after{
  content:"";position:absolute;left:50%;bottom:8px;width:2px;height:9px;
  transform:translateX(-50%);background:rgba(6,10,22,.9);border-radius:2px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;min-width:0;}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.02em;white-space:nowrap;}
.brand-sub{font-style:normal;font-size:11.5px;color:var(--text-3);letter-spacing:.14em;white-space:nowrap;}
.brand-tools{display:flex;align-items:center;gap:10px;}
.search-pill{
  display:flex;align-items:center;gap:10px;height:44px;padding:0 6px 0 16px;
  border-radius:var(--radius-pill);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(14px);
  transition:border-color .22s ease,box-shadow .22s ease;
}
.search-pill:focus-within{border-color:rgba(31,214,192,.55);box-shadow:var(--glow);}
.search-pill i{color:var(--text-3);font-size:13px;}
.search-pill input{
  width:200px;border:0;background:transparent;outline:none;font-size:14px;color:var(--text);
}
.search-pill input::placeholder{color:var(--text-3);font-size:14px;}
.search-btn{
  width:34px;height:34px;border-radius:50%;border:0;cursor:pointer;
  background:var(--grad);color:#04121a;display:grid;place-items:center;font-size:12px;
  transition:transform .22s ease,filter .22s ease;
}
.search-btn:hover{filter:brightness(1.08);}
.search-btn:active{transform:translateY(1px);}
.icon-btn{
  width:44px;height:44px;border-radius:var(--radius-pill);
  background:var(--glass);border:1px solid var(--line);color:var(--text-2);
  cursor:pointer;display:grid;place-items:center;
  transition:all .22s ease;
}
.icon-btn:hover{color:var(--primary);border-color:rgba(31,214,192,.4);box-shadow:var(--glow);}
.menu-btn{
  display:none;width:44px;height:44px;border-radius:var(--radius-pill);
  background:var(--glass);border:1px solid var(--line);color:var(--text);
  cursor:pointer;place-items:center;
}
.menu-btn:hover{border-color:rgba(31,214,192,.4);color:var(--primary);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:48px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#04121a;box-shadow:0 12px 34px rgba(31,214,192,.28);}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 40px rgba(31,214,192,.4),var(--glow);}
.btn-primary:active{transform:translateY(-1px);filter:brightness(.94);}
.btn-ghost{background:var(--glass);border-color:var(--line);color:var(--text);backdrop-filter:blur(14px);}
.btn-ghost:hover{transform:translateY(-3px);border-color:rgba(31,214,192,.45);color:var(--primary);box-shadow:var(--glow);}
.btn-sm{height:42px;padding:0 18px;font-size:14px;}

/* ============ 频道行 ============ */
.channel-row{border-top:1px solid var(--line);background:rgba(6,10,22,.5);}
.channel-scroll{display:flex;align-items:center;gap:8px;height:48px;overflow-x:auto;scrollbar-width:none;}
.channel-scroll::-webkit-scrollbar{display:none;}
.channel{
  position:relative;flex:none;display:inline-flex;align-items:center;
  height:34px;padding:0 16px;border-radius:var(--radius-pill);
  font-size:14px;color:var(--text-2);border:1px solid transparent;
  transition:all .22s ease;
}
.channel:hover{color:var(--text);background:rgba(255,255,255,.05);}
.channel.active{
  color:var(--primary);background:rgba(31,214,192,.12);
  border-color:rgba(31,214,192,.28);
  box-shadow:0 0 0 1px rgba(31,214,192,.06) inset;
}
.channel.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:-8px;height:2px;
  background:var(--grad);border-radius:2px;box-shadow:0 0 12px rgba(31,214,192,.7);
}

/* ============ 抽屉 ============ */
.drawer{
  position:fixed;inset:0;z-index:120;display:none;
  background:rgba(4,7,14,.7);backdrop-filter:blur(6px);
}
.drawer.open{display:block;}
.drawer-panel{
  position:absolute;top:0;right:0;width:min(340px,86vw);height:100%;
  background:var(--panel);border-left:1px solid var(--line);
  padding:24px 22px;display:flex;flex-direction:column;gap:10px;overflow-y:auto;
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;}
.drawer-head strong{font-size:16px;}
.drawer-close{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--line);
  background:var(--glass);color:var(--text-2);cursor:pointer;
}
.drawer-close:hover{color:var(--primary);border-color:rgba(31,214,192,.4);}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 16px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:var(--glass-2);color:var(--text-2);font-size:15px;
}
.drawer-link:hover{color:var(--primary);border-color:rgba(31,214,192,.4);}
.drawer-link.active{color:var(--primary);background:rgba(31,214,192,.1);border-color:rgba(31,214,192,.3);}
.drawer .btn{width:100%;margin-top:12px;}

/* ============ 面包屑 ============ */
.breadcrumb{padding:22px 0 0;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:var(--text-3);opacity:.7;}
.breadcrumb .current{color:var(--text);}

/* ============ 窄幅 KV ============ */
.cat-hero{
  position:relative;margin-top:22px;border-radius:22px;overflow:hidden;
  min-height:340px;display:flex;align-items:flex-end;
  border:1px solid var(--line);box-shadow:var(--shadow);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(6,10,22,.62) 0%,rgba(6,10,22,.86) 62%,rgba(6,10,22,.96) 100%),
    url("/assets/images/backpic/back-1.webp");
  background-size:cover,cover;background-position:center,center;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
}
.cat-hero-inner{position:relative;z-index:2;padding:44px 40px;max-width:860px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 13px;border-radius:var(--radius-pill);
  font-size:12.5px;letter-spacing:.02em;
  background:rgba(108,99,255,.16);color:#AFA9FF;border:1px solid rgba(108,99,255,.3);
}
.badge-warm{background:rgba(255,184,77,.14);color:var(--accent);border-color:rgba(255,184,77,.3);}
.badge-cyan{background:rgba(31,214,192,.12);color:var(--primary);border-color:rgba(31,214,192,.28);}
.cat-hero h1{font-size:clamp(30px,4.4vw,50px);font-weight:700;line-height:1.18;}
.cat-hero .hero-lede{
  margin-top:16px;font-size:16.5px;color:var(--text-2);max-width:660px;
}
.hero-meta{display:flex;flex-wrap:wrap;gap:18px;margin-top:22px;font-size:13px;color:var(--text-3);}
.hero-meta span{display:inline-flex;align-items:center;gap:7px;}
.hero-meta i{color:var(--primary);font-size:12px;}

/* ============ 锚点胶囊条 ============ */
.anchor-bar{
  position:sticky;top:64px;z-index:40;margin-top:20px;
  background:rgba(12,20,36,.78);backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:var(--radius-pill);
  padding:9px;display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;
  box-shadow:0 14px 40px rgba(0,0,0,.35);
}
.anchor-bar::-webkit-scrollbar{display:none;}
.anchor-bar a{
  flex:none;display:inline-flex;align-items:center;gap:8px;
  height:36px;padding:0 16px;border-radius:var(--radius-pill);
  font-size:13.5px;color:var(--text-2);border:1px solid transparent;
}
.anchor-bar a:hover{color:var(--primary);background:rgba(31,214,192,.1);border-color:rgba(31,214,192,.26);}

/* ============ 通用板块 ============ */
.section{padding:80px 0 0;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;}
.section-head h2{font-size:clamp(24px,2.6vw,32px);}
.section-head .eyebrow{
  display:block;font-family:var(--mono);font-size:12px;letter-spacing:.2em;
  color:var(--primary);margin-bottom:10px;text-transform:uppercase;
}
.section-head p{color:var(--text-2);font-size:15px;margin-top:12px;max-width:640px;}
.link-more{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--primary);}
.link-more:hover{gap:12px;}

/* ============ 大图 + 清单 ============ */
.split{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:start;}
.split-media{grid-column:span 5;position:sticky;top:140px;}
.media-frame{
  position:relative;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow);background:var(--panel);
  aspect-ratio:4/5;
}
.media-frame img{width:100%;height:100%;object-fit:cover;opacity:.92;}
.media-frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,22,.15) 0%,rgba(6,10,22,.78) 100%);
}
.media-caption{
  position:absolute;left:0;right:0;bottom:0;z-index:2;padding:22px 24px;
}
.media-caption strong{display:block;font-size:17px;margin-bottom:6px;}
.media-caption span{font-size:13.5px;color:var(--text-2);}
.split-list{grid-column:span 7;display:flex;flex-direction:column;gap:14px;}
.check-item{
  display:grid;grid-template-columns:56px 1fr;gap:18px;
  padding:24px 26px;border-radius:var(--radius);
  background:var(--glass-2);border:1px solid var(--line);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.check-item:hover{
  transform:translateY(-4px);border-color:rgba(31,214,192,.4);
  box-shadow:var(--shadow),var(--glow);background:var(--glass);
}
.check-num{
  font-family:var(--mono);font-size:22px;color:var(--primary);
  line-height:1;padding-top:4px;letter-spacing:.02em;
}
.check-item h3{font-size:19px;margin-bottom:10px;}
.check-item p{font-size:15px;color:var(--text-2);line-height:1.8;}
.check-item .mini{
  display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;
}
.mini span{
  font-size:12.5px;color:var(--text-3);border:1px dashed var(--line-strong);
  padding:3px 10px;border-radius:var(--radius-pill);
}
.divider{height:1px;background:var(--line);margin:4px 0;}

/* ============ 指标带 ============ */
.stat-band{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  padding:28px 30px;border-radius:var(--radius);
  background:var(--glass-2);border:1px solid var(--line);
}
.stat-item .stat-num{
  font-family:var(--mono);font-size:30px;font-weight:700;color:var(--primary);
  letter-spacing:.02em;line-height:1.2;
}
.stat-item .stat-label{font-size:13.5px;color:var(--text-3);margin-top:8px;}

/* ============ 场景卡 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.scene-card{
  border-radius:var(--radius);overflow:hidden;background:var(--glass-2);
  border:1px solid var(--line);display:flex;flex-direction:column;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.scene-card:hover{transform:translateY(-4px);border-color:rgba(31,214,192,.4);box-shadow:var(--shadow),var(--glow);}
.scene-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--panel);}
.scene-thumb img{width:100%;height:100%;object-fit:cover;}
.scene-body{padding:24px 26px 26px;}
.scene-body h3{font-size:19px;margin-bottom:10px;}
.scene-body p{font-size:14.8px;color:var(--text-2);}
.scene-body ul{margin-top:16px;display:flex;flex-direction:column;gap:9px;}
.scene-body li{position:relative;padding-left:18px;font-size:14px;color:var(--text-2);}
.scene-body li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;
  background:var(--primary);opacity:.85;
}

/* ============ FAQ ============ */
.faq-list{
  border-radius:var(--radius);border:1px solid var(--line);
  background:var(--glass-2);overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 26px;font-size:16.5px;font-weight:600;
  transition:background .22s ease,color .22s ease,padding-left .22s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:rgba(255,255,255,.03);color:var(--primary);}
.faq-item summary::after{
  content:"+";flex:none;width:28px;height:28px;border-radius:50%;
  border:1px solid var(--line-strong);color:var(--text-2);
  display:grid;place-items:center;font-family:var(--mono);font-size:15px;line-height:1;
  transition:all .24s ease;
}
.faq-item[open] summary{color:var(--primary);}
.faq-item[open] summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  background:var(--grad);border-radius:3px;box-shadow:0 0 14px rgba(31,214,192,.7);
}
.faq-item[open] summary{padding-left:32px;}
.faq-item[open] summary::after{content:"−";color:var(--primary);border-color:rgba(31,214,192,.5);}
.faq-body{padding:0 26px 24px 32px;font-size:15.4px;color:var(--text-2);line-height:1.85;}

/* ============ 宽幅 CTA ============ */
.cta-wide{
  position:relative;overflow:hidden;
  border-radius:20px;border:1px solid var(--line);
  background:linear-gradient(135deg,rgba(31,214,192,.09) 0%,rgba(108,99,255,.09) 100%);
  padding:52px 48px;box-shadow:var(--shadow);
}
.cta-wide::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,214,192,.22),transparent 68%);
}
.cta-wide-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;}
.cta-wide h2{font-size:clamp(24px,2.8vw,34px);max-width:660px;}
.cta-wide p{color:var(--text-2);font-size:15.5px;margin-top:12px;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:96px;border-top:1px solid var(--line);
  background:#04070F;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;
  padding:64px 24px 44px;
}
.footer-brand p{color:var(--text-2);font-size:14.5px;margin-top:16px;max-width:340px;}
.footer-col h3{font-size:15px;margin-bottom:18px;color:var(--text);}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:20px 24px 32px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .brand-row{height:60px;}
  .search-pill{display:none;}
  .icon-btn{display:none;}
  .menu-btn{display:grid;}
  .channel-row{display:none;}
  .split-media{grid-column:span 12;position:static;}
  .split-list{grid-column:span 12;}
  .media-frame{aspect-ratio:16/10;}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
  .anchor-bar{top:60px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:768px){
  .wrap{padding:0 18px;}
  .section{padding:56px 0 0;}
  .cat-hero{min-height:300px;}
  .cat-hero-inner{padding:32px 24px;}
  .stat-band{grid-template-columns:repeat(2,1fr);gap:20px;padding:24px 22px;}
  .scene-grid{grid-template-columns:1fr;}
  .cta-wide{padding:36px 24px;}
  .site-footer{margin-top:64px;}
  .footer-grid{grid-template-columns:1fr;padding:48px 18px 32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .cat-hero h1{font-size:27px;}
  .section-head h2{font-size:23px;}
  .check-item{grid-template-columns:1fr;gap:10px;padding:20px 18px;}
  .check-num{font-size:19px;}
  .btn{width:100%;}
  .brand-tools .btn{width:auto;}
  .cta-actions{width:100%;}
  .faq-item summary{font-size:15.5px;padding:18px;}
  .faq-body{padding:0 18px 20px 22px;}
}

/* roulang page: category2 */
:root{
  --bg:#060A16;
  --panel:#0C1424;
  --glass:rgba(255,255,255,.05);
  --line:rgba(255,255,255,.08);
  --main:#1FD6C0;
  --sub:#6C63FF;
  --accent:#FFB84D;
  --warn:#FF5D6C;
  --text:#EAF2FF;
  --text-2:#9FB0CC;
  --text-3:#6C7C99;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-pill:999px;
  --shadow:0 20px 60px rgba(0,0,0,.45);
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}

body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 620px at 6% -8%, rgba(31,214,192,.08), transparent 62%),
    radial-gradient(820px 620px at 104% 10%, rgba(108,99,255,.08), transparent 62%),
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:auto,auto,48px 48px,48px 48px;
  background-attachment:fixed,fixed,scroll,scroll;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,li,figure{margin:0;padding:0}
ul,ol{list-style:none}

:focus-visible{outline:2px solid var(--main);outline-offset:2px;border-radius:6px}
::selection{background:rgba(31,214,192,.3);color:#04121A}

.mono{font-family:var(--mono);letter-spacing:.02em}

.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(6,10,22,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .22s ease,background .22s ease;
}
.site-header.scrolled{
  background:rgba(6,10,22,.9);
  border-bottom-color:var(--line);
}

.brand-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  min-height:64px;
}

.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}

.logo-mark{
  position:relative;
  width:36px;height:36px;
  border-radius:11px;
  background:linear-gradient(135deg,var(--main),var(--sub));
  box-shadow:0 0 22px rgba(31,214,192,.35);
  flex:0 0 auto;
}
.logo-mark::before{
  content:"";position:absolute;left:9px;right:9px;top:9px;bottom:9px;
  border:2px solid rgba(6,10,22,.85);
  border-bottom:0;
  border-radius:6px 6px 0 0;
}
.logo-mark::after{
  content:"";position:absolute;left:50%;bottom:9px;transform:translateX(-50%);
  width:2px;height:11px;background:rgba(6,10,22,.8);border-radius:2px;
}

.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:16px;font-weight:700;letter-spacing:.02em}
.brand-sub{font-size:11.5px;font-style:normal;color:var(--text-3);letter-spacing:.08em}

.brand-tools{display:flex;align-items:center;gap:10px;flex:0 0 auto}

.search-pill{
  display:flex;align-items:center;gap:8px;
  height:38px;padding:0 5px 0 14px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  backdrop-filter:blur(10px);
  transition:border-color .22s ease,box-shadow .22s ease;
}
.search-pill:focus-within{
  border-color:rgba(31,214,192,.55);
  box-shadow:0 0 0 3px rgba(31,214,192,.12);
}
.search-pill i{color:var(--text-3);font-size:13px}
.search-pill input{
  width:186px;background:none;border:0;outline:none;
  font-size:14px;color:var(--text);
}
.search-pill input::placeholder{color:var(--text-3);font-size:13.5px}
.search-btn{
  width:28px;height:28px;border-radius:50%;border:0;cursor:pointer;
  background:linear-gradient(135deg,var(--main),var(--sub));
  color:#04121A;display:inline-flex;align-items:center;justify-content:center;font-size:11px;
  transition:filter .2s ease,transform .2s ease;
}
.search-btn:hover{filter:brightness(1.08)}
.search-btn:active{transform:translateY(1px)}

.icon-btn{
  width:38px;height:38px;border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  color:var(--text-2);
  display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;
  transition:color .22s ease,border-color .22s ease,background .22s ease;
}
.icon-btn:hover{color:var(--main);border-color:rgba(31,214,192,.4);background:rgba(31,214,192,.08)}

.menu-btn{
  display:none;
  width:38px;height:38px;border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  color:var(--text);cursor:pointer;
  align-items:center;justify-content:center;
}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .2s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease,filter .2s ease;
}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-primary{
  background:linear-gradient(135deg,var(--main),var(--sub));
  color:#04121A;
  box-shadow:0 10px 30px rgba(31,214,192,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 40px rgba(31,214,192,.42)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-ghost{
  background:rgba(255,255,255,.05);
  border-color:var(--line);
  color:var(--text);
}
.btn-ghost:hover{border-color:rgba(31,214,192,.45);color:var(--main);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0);filter:brightness(.94)}

/* ---------- 频道行 ---------- */
.channel-row{
  border-top:1px solid rgba(255,255,255,.05);
  background:rgba(255,255,255,.012);
}
.channel-scroll{
  display:flex;align-items:center;gap:8px;
  height:48px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.channel-scroll::-webkit-scrollbar{display:none}

.channel{
  position:relative;
  display:inline-flex;align-items:center;
  white-space:nowrap;
  padding:9px 16px;
  border-radius:var(--radius-pill);
  font-size:14px;
  color:var(--text-2);
  transition:color .22s ease,background .22s ease;
}
.channel:hover{color:var(--text);background:rgba(255,255,255,.05)}
.channel.active{
  color:var(--main);
  background:rgba(31,214,192,.12);
}
.channel.active::after{
  content:"";position:absolute;left:18px;right:18px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--main),var(--sub));
  box-shadow:0 0 10px rgba(31,214,192,.7);
}

/* ---------- 页面头部区 ---------- */
.page-intro{padding:52px 0 76px;position:relative}

.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--text-3);
  margin-bottom:30px;
}
.breadcrumb a{color:var(--text-3);transition:color .2s ease}
.breadcrumb a:hover{color:var(--main)}
.breadcrumb .sep{color:rgba(255,255,255,.2)}
.breadcrumb .current{color:var(--text-2)}

.intro-grid{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:52px;
  align-items:start;
}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(31,214,192,.28);
  background:rgba(31,214,192,.09);
  color:var(--main);
  font-size:12.5px;
  letter-spacing:.08em;
  margin-bottom:20px;
}
.eyebrow i{font-size:11px}

.intro-left h1{
  font-size:clamp(30px,4.4vw,46px);
  line-height:1.22;
  font-weight:700;
  letter-spacing:.01em;
}
.intro-left .lede{
  margin-top:20px;
  font-size:16.5px;
  color:var(--text-2);
  max-width:34em;
}
.intro-left .lede strong{color:var(--text);font-weight:600}

.stat-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:14px;
  margin-top:32px;
}
.stat{
  border:1px solid var(--line);
  background:var(--glass);
  border-radius:14px;
  padding:14px 16px;
  backdrop-filter:blur(10px);
}
.stat b{
  display:block;
  font-family:var(--mono);
  font-size:22px;
  font-weight:700;
  color:var(--main);
  letter-spacing:.02em;
  line-height:1.3;
}
.stat span{display:block;font-size:13px;color:var(--text-3);margin-top:2px}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;padding-top:4px}
.tl-item{
  position:relative;
  padding:0 0 30px 60px;
}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";
  position:absolute;left:19px;top:42px;bottom:2px;width:1px;
  background:repeating-linear-gradient(180deg,rgba(31,214,192,.5) 0 5px,transparent 5px 11px);
}
.tl-item:last-child::before{display:none}

.tl-num{
  position:absolute;left:0;top:2px;
  width:40px;height:40px;
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);
  font-size:14px;
  letter-spacing:.02em;
  color:var(--main);
  background:rgba(31,214,192,.09);
  border:1px solid rgba(31,214,192,.28);
  box-shadow:0 0 0 4px rgba(31,214,192,.06);
}
.tl-item.is-active .tl-num{
  background:linear-gradient(135deg,var(--main),var(--sub));
  color:#04121A;
  border-color:transparent;
  box-shadow:0 0 22px rgba(31,214,192,.45);
}
.tl-item h3{
  font-size:19px;
  font-weight:600;
  line-height:1.45;
  margin-bottom:8px;
}
.tl-item p{
  font-size:15px;
  color:var(--text-2);
  max-width:44em;
}
.tl-tag{
  display:inline-block;
  margin-left:10px;
  padding:2px 9px;
  border-radius:var(--radius-pill);
  font-size:11.5px;
  font-weight:500;
  color:var(--accent);
  background:rgba(255,184,77,.12);
  border:1px solid rgba(255,184,77,.28);
  vertical-align:middle;
}

/* ---------- 通用板块标题 ---------- */
.band-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:22px;flex-wrap:wrap;
  margin-bottom:26px;
}
.band-head h2{
  font-size:clamp(23px,2.6vw,30px);
  font-weight:600;
  line-height:1.3;
}
.band-head .band-sub{
  font-size:14.5px;
  color:var(--text-2);
  margin-top:8px;
  max-width:52em;
}
.more-link{
  display:inline-flex;align-items:center;gap:7px;
  font-size:14px;color:var(--main);
  transition:gap .22s ease,color .22s ease;
}
.more-link:hover{gap:12px;color:#63F0DC}

/* ---------- 横向卡带 ---------- */
.railband{padding:0 0 78px}
.cardrail{
  display:flex;gap:20px;
  overflow-x:auto;
  padding:6px 2px 20px;
  scroll-snap-type:x mandatory;
  scrollbar-width:none;-ms-overflow-style:none;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 26px,#000 calc(100% - 26px),transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0,#000 26px,#000 calc(100% - 26px),transparent 100%);
}
.cardrail::-webkit-scrollbar{display:none}

.railcard{
  flex:0 0 340px;
  scroll-snap-align:start;
  display:flex;flex-direction:column;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
  overflow:hidden;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.railcard:hover{
  transform:translateY(-4px);
  border-color:rgba(31,214,192,.4);
  box-shadow:0 20px 60px rgba(0,0,0,.45),0 0 28px rgba(31,214,192,.25);
}
.thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:linear-gradient(135deg,rgba(31,214,192,.2),rgba(108,99,255,.2));
}
.thumb img{width:100%;height:100%;object-fit:cover}
.thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,22,.02),rgba(6,10,22,.6));
}
.railcard .body{
  padding:22px 22px 24px;
  display:flex;flex-direction:column;gap:12px;flex:1;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  align-self:flex-start;
  padding:5px 12px;
  border-radius:var(--radius-pill);
  font-size:12px;
  letter-spacing:.02em;
  color:var(--main);
  background:rgba(108,99,255,.16);
  border:1px solid rgba(108,99,255,.3);
}
.railcard h3{
  font-size:19px;
  font-weight:600;
  line-height:1.45;
}
.railcard p{
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.7;
}
.railcard .foot{
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.railcard .foot .go{
  display:inline-flex;align-items:center;gap:6px;color:var(--main);font-size:13px;
}

/* ---------- 检查清单 ---------- */
.check-band{padding:0 0 78px}
.check-list{
  border-top:1px solid var(--line);
}
.check-row{
  display:grid;
  grid-template-columns:70px minmax(0,1fr) minmax(0,1.35fr);
  gap:26px;
  align-items:center;
  padding:22px 6px;
  border-bottom:1px solid var(--line);
  transition:background .22s ease;
}
.check-row:hover{background:rgba(255,255,255,.03)}
.check-idx{
  font-family:var(--mono);
  font-size:15px;
  letter-spacing:.08em;
  color:var(--accent);
}
.check-row h3{font-size:18.5px;font-weight:600;line-height:1.45}
.check-row p{font-size:15px;color:var(--text-2);line-height:1.7}

/* ---------- FAQ ---------- */
.faq-band{padding:0 0 78px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{
  position:relative;
  border-bottom:1px solid var(--line);
}
.faq-item.open::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:3px;
  background:var(--main);
  box-shadow:0 0 14px rgba(31,214,192,.7);
}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px 22px 18px;
  background:none;border:0;cursor:pointer;
  text-align:left;
  font-size:17px;font-weight:600;line-height:1.55;color:var(--text);
  transition:color .22s ease;
}
.faq-q:hover{color:var(--main)}
.faq-icon{
  position:relative;flex:0 0 auto;
  width:24px;height:24px;border-radius:50%;
  border:1px solid var(--line);
  transition:border-color .22s ease,background .22s ease;
}
.faq-item.open .faq-icon{border-color:rgba(31,214,192,.5);background:rgba(31,214,192,.08)}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--main);border-radius:2px;
  transform:translate(-50%,-50%);
  transition:opacity .22s ease,transform .22s ease;
}
.faq-icon::before{width:10px;height:1.6px}
.faq-icon::after{width:1.6px;height:10px}
.faq-item.open .faq-icon::after{opacity:0;transform:translate(-50%,-50%) rotate(90deg)}

.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .24s ease;
}
.faq-item.open .faq-a{max-height:400px}
.faq-a p{
  padding:0 4px 24px 34px;
  font-size:15.5px;
  color:var(--text-2);
  line-height:1.8;
}

/* ---------- CTA ---------- */
.cta-band{padding:0 0 92px}
.cta-card{
  position:relative;overflow:hidden;
  border-radius:20px;
  border:1px solid rgba(31,214,192,.24);
  background:linear-gradient(135deg,rgba(31,214,192,.10),rgba(108,99,255,.10)),var(--panel);
  padding:42px 44px;
  display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
  box-shadow:var(--shadow);
}
.cta-card::after{
  content:"";position:absolute;right:-80px;top:-80px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,99,255,.22),transparent 68%);
  pointer-events:none;
}
.cta-text{position:relative;z-index:1;max-width:44em}
.cta-text h2{font-size:clamp(22px,2.5vw,28px);font-weight:600;line-height:1.35}
.cta-text p{margin-top:12px;font-size:15.5px;color:var(--text-2)}
.cta-actions{position:relative;z-index:1;display:flex;align-items:center;gap:18px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#04070F;
  border-top:1px solid var(--line);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:38px;
  padding:58px 0 42px;
}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{
  font-size:14px;color:var(--text-3);line-height:1.8;max-width:30em;
}
.footer-col h3{
  font-size:14px;font-weight:600;color:var(--text);
  margin-bottom:16px;letter-spacing:.04em;
}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{
  font-size:14px;color:var(--text-3);
  transition:color .2s ease;
}
.footer-col ul li a:hover{color:var(--main)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;
  padding:20px 0 26px;
  border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.footer-bottom .mono{color:var(--text-3);letter-spacing:.04em}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .search-pill input{width:150px}
  .intro-grid{gap:40px}
}

@media (max-width:1024px){
  .menu-btn{display:inline-flex}
  .channel-row{
    position:absolute;left:0;right:0;top:100%;
    background:rgba(8,13,26,.97);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    border-bottom:1px solid var(--line);
    max-height:0;overflow:hidden;
    transition:max-height .28s ease;
  }
  .site-header.nav-open .channel-row{max-height:340px}
  .channel-scroll{
    flex-direction:column;align-items:stretch;
    height:auto;gap:6px;
    padding:14px 24px 22px;
    overflow-x:visible;
  }
  .channel{
    padding:13px 14px;
    border-radius:12px;
    font-size:15px;
  }
  .channel.active::after{display:none}

  .intro-grid{grid-template-columns:1fr;gap:44px}
  .intro-left .lede{max-width:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}

@media (max-width:820px){
  .search-pill{display:none}
  .check-row{
    grid-template-columns:52px minmax(0,1fr);
    gap:8px 16px;
    align-items:start;
    padding:20px 4px;
  }
  .check-row p{grid-column:2;}
}

@media (max-width:768px){
  .wrap{padding:0 18px}
  .page-intro{padding:38px 0 52px}
  .railband,.check-band,.faq-band{padding-bottom:56px}
  .cta-band{padding-bottom:64px}
  .cta-card{padding:30px 24px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .railcard{flex:0 0 82%}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
  .faq-a p{padding-left:26px}
}

@media (max-width:560px){
  .brand-sub{display:none}
  .intro-left h1{font-size:27px}
  .stat-grid{grid-template-columns:1fr}
  .tl-item{padding-left:52px}
  .tl-num{width:36px;height:36px;font-size:13px}
  .tl-item::before{left:17px}
  .faq-q{font-size:16px;padding-left:14px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:44px 0 32px}
  .btn-sm{height:34px;padding:0 12px;font-size:13px}
}