/* roulang page: index */
:root{
  --bg-0:#070A11;
  --bg-1:#0D121B;
  --surface:#131A26;
  --surface-2:#1A2331;
  --line:#223046;
  --line-soft:rgba(255,255,255,.06);
  --neon:#14F0A6;
  --neon-dim:rgba(20,240,166,.16);
  --amber:#FFB020;
  --violet:#8B6CFF;
  --flare:#FF5A2B;
  --text-1:#E9EFF7;
  --text-2:#9AA9BE;
  --text-3:#63718A;
  --ok:#14F0A6;
  --err:#FF5A5A;
  --r-card:14px;
  --r-btn:10px;
  --r-badge:6px;
  --r-hero:18px;
  --r-input:10px;
  --shadow-card:0 1px 0 rgba(255,255,255,.03) inset, 0 12px 32px rgba(0,0,0,.45);
  --glow:0 0 0 1px var(--neon), 0 0 24px rgba(20,240,166,.25);
  --maxw:1200px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure{margin:0}
input{font:inherit}
:focus-visible{outline:3px solid rgba(20,240,166,.35);outline-offset:2px;border-radius:6px}
::selection{background:rgba(20,240,166,.28);color:#fff}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#0A0E16;
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(140%) blur(2px);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(20,240,166,.75),transparent);
}
.header-inner{display:flex;align-items:center;gap:24px;height:64px}
.logo{display:flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:36px;height:36px;flex:none;border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(20,240,166,.18),rgba(139,108,255,.16));
  border:1px solid rgba(20,240,166,.45);
  box-shadow:0 0 18px rgba(20,240,166,.18);
}
.logo-mark svg{width:20px;height:20px;display:block}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text strong{font-size:15px;font-weight:800;letter-spacing:.01em;white-space:nowrap}
.logo-text em{font-style:normal;font-size:11px;letter-spacing:.06em;color:var(--text-3);white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:26px;margin-left:8px}
.nav-link{
  position:relative;height:64px;display:inline-flex;align-items:center;
  font-size:15px;color:var(--text-2);transition:color .18s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--neon);transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease-out;
}
.nav-link:hover{color:var(--text-1)}
.nav-link:hover::after{transform:scaleX(.6)}
.nav-link.is-active{color:var(--text-1);text-shadow:0 0 12px rgba(20,240,166,.5)}
.nav-link.is-active::after{transform:scaleX(1);box-shadow:0 0 12px rgba(20,240,166,.6)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:none}
.search-toggle{
  height:38px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid var(--line);color:var(--text-2);font-size:14px;
  transition:color .18s,border-color .18s,background .18s;
}
.search-toggle:hover{color:var(--text-1);border-color:rgba(20,240,166,.45);background:var(--surface-2)}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--text-1);position:relative;border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--text-1);border-radius:2px;
}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}
.inline-search{display:none;border-top:1px solid var(--line);background:var(--bg-1)}
.inline-search.is-open{display:block}
.inline-search form{display:flex;gap:12px;padding:16px 0}
.search-field{
  flex:1;height:48px;padding:0 16px;border-radius:var(--r-input);
  border:1px solid var(--line);background:var(--bg-0);color:var(--text-1);font-size:15px;
  transition:border-color .18s,box-shadow .18s;
}
.search-field::placeholder{color:var(--text-3)}
.search-field:focus{outline:none;border-color:var(--neon);box-shadow:0 0 0 3px rgba(20,240,166,.15)}

.drawer{
  position:fixed;inset:0;z-index:120;background:#0A0E16;
  display:flex;flex-direction:column;padding:20px;
  transform:translateX(100%);visibility:hidden;
  transition:transform .24s ease-out,visibility .24s;
}
.drawer.is-open{transform:translateX(0);visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);font-size:18px;line-height:1;color:var(--text-2)}
.drawer-close:hover{color:var(--text-1);border-color:rgba(20,240,166,.45)}
.drawer-nav{display:flex;flex-direction:column;margin-top:12px}
.drawer-nav a{
  position:relative;padding:16px 12px;font-size:17px;color:var(--text-2);
  border-bottom:1px solid var(--line-soft);
}
.drawer-nav a::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;background:var(--neon);opacity:0;
}
.drawer-nav a.is-active{color:var(--text-1);padding-left:16px}
.drawer-nav a.is-active::before{opacity:1}
.drawer-note{margin-top:auto;padding-top:20px;font-size:12px;color:var(--text-3);letter-spacing:.06em}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:filter .18s,box-shadow .18s,transform .12s,background .18s,border-color .18s,color .18s;
}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-lg{height:52px;padding:0 26px;font-size:16px}
.btn-block{width:100%}
.btn-primary{background:var(--neon);color:#04120C}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 24px rgba(20,240,166,.3)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--neon);color:var(--neon)}
.btn-ghost:hover{background:var(--neon-dim);box-shadow:0 0 24px rgba(20,240,166,.18)}
.btn-ghost:active{transform:translateY(1px)}
.btn-outline{background:transparent;border-color:var(--line);color:var(--text-1)}
.btn-outline:hover{border-color:rgba(20,240,166,.45);background:var(--surface-2)}
.btn-outline:active{transform:translateY(1px)}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(900px 420px at 10% -12%, rgba(20,240,166,.10), transparent 62%),
    radial-gradient(700px 380px at 92% 8%, rgba(139,108,255,.08), transparent 60%),
    linear-gradient(180deg,#080C14,#070A11);
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:64px 64px;
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:7fr 5fr;
  gap:var(--gap);align-items:center;padding:72px 0 80px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;color:var(--neon);text-transform:uppercase;
  padding:6px 12px;border-radius:var(--r-badge);
  background:var(--neon-dim);border:1px solid rgba(20,240,166,.3);
}
.hero h1{
  margin-top:20px;font-size:40px;line-height:1.2;font-weight:800;letter-spacing:-.01em;
  background:linear-gradient(180deg,#FFFFFF 30%,#B9C7D9 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{margin-top:18px;max-width:34em;font-size:17px;line-height:1.8;color:var(--text-2)}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-stats{display:flex;flex-wrap:wrap;gap:40px;margin-top:36px;padding-top:26px;border-top:1px solid var(--line)}
.stat{min-width:96px}
.stat-num{font-size:24px;font-weight:800;color:var(--amber);font-variant-numeric:tabular-nums;line-height:1.2}
.stat-label{margin-top:2px;font-size:12px;letter-spacing:.08em;color:var(--text-3)}
.hero-media{
  position:relative;border-radius:var(--r-hero);overflow:hidden;
  border:1px solid var(--line);aspect-ratio:16/9;background:var(--bg-1);
  box-shadow:var(--shadow-card);
}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,#070A11 0%,rgba(7,10,17,0) 72%);
}
.hero-media::before{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;z-index:2;
  background:linear-gradient(90deg,var(--neon),rgba(20,240,166,0));
}

/* ---------- Sections ---------- */
.section{position:relative;padding:88px 0}
.section + .section::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--neon),rgba(20,240,166,0) 55%,transparent);
}
.section--band{background:var(--bg-1)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-title{position:relative;padding-left:16px;font-size:28px;line-height:1.35;font-weight:700;letter-spacing:-.01em}
.section-title::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:3px;border-radius:2px;
  background:linear-gradient(180deg,var(--neon),rgba(20,240,166,0));
}
.section-desc{margin-top:10px;max-width:38em;font-size:15px;line-height:1.8;color:var(--text-2)}
.section-link{flex:none;font-size:14px;color:var(--neon);border-bottom:1px solid rgba(20,240,166,.35);padding-bottom:2px}
.section-link:hover{color:#7CFFD3}

/* ---------- Index map ---------- */
.index-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.index-item{
  position:relative;display:flex;gap:16px;padding:20px 22px;
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--bg-1);
  transition:background .18s,border-color .18s,transform .18s;
}
.index-item::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:2px;border-radius:2px;
  background:var(--neon);opacity:0;transition:opacity .18s;
}
.index-item:hover{background:var(--surface-2);border-color:rgba(20,240,166,.45);transform:translateY(-2px)}
.index-item:hover::before{opacity:1}
.index-num{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--amber);font-variant-numeric:tabular-nums;line-height:1.9}
.index-body{flex:1}
.index-title{font-size:17px;font-weight:600;line-height:1.5}
.index-note{margin-top:6px;font-size:13px;color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.index-arrow{flex:none;align-self:center;color:var(--text-3);transition:color .18s,transform .18s}
.index-item:hover .index-arrow{color:var(--neon);transform:translateX(3px)}

/* ---------- Feature ---------- */
.feature-layout{display:grid;grid-template-columns:8fr 4fr;gap:var(--gap);align-items:start}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .18s ease-out,border-color .18s ease-out,background .18s ease-out;
}
.card:hover{transform:translateY(-2px);border-color:rgba(20,240,166,.45);background:var(--surface-2)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-1)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:20px}
.card-title{font-size:18px;line-height:1.5;font-weight:600;transition:color .18s}
.card:hover .card-title{color:#B9FFE4}
.card-summary{
  margin-top:10px;font-size:14px;line-height:1.75;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:16px;font-size:12px;color:var(--text-3)}
.feature-main .card-media{aspect-ratio:16/8}
.feature-main .card-title{font-size:24px}
.feature-main .card-body{padding:24px}
.feature-side{display:flex;flex-direction:column;gap:12px;border:1px solid var(--line);border-radius:var(--r-card);background:var(--bg-1);padding:12px}
.side-item{display:flex;gap:14px;padding:12px;border-radius:10px;transition:background .18s}
.side-item + .side-item{border-top:1px solid var(--line-soft)}
.side-item:hover{background:var(--surface-2)}
.side-thumb{width:64px;height:64px;flex:none;border-radius:10px;overflow:hidden;border:1px solid var(--line);background:var(--bg-0)}
.side-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out}
.side-item:hover .side-thumb img{transform:scale(1.06)}
.side-title{font-size:15px;line-height:1.5;font-weight:600}
.side-meta{margin-top:6px;font-size:12px;color:var(--text-3)}

.badge{
  display:inline-flex;align-items:center;height:22px;padding:0 8px;
  border-radius:var(--r-badge);font-size:12px;letter-spacing:.04em;white-space:nowrap;
}
.badge-violet{background:rgba(139,108,255,.15);color:#B7A6FF}
.badge-neon{background:var(--neon-dim);color:var(--neon)}
.badge-amber{background:rgba(255,176,32,.14);color:var(--amber)}

/* ---------- Latest (CMS) ---------- */
.latest-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.latest-card.is-lead{grid-column:span 2}
.latest-card.is-lead .card-media{aspect-ratio:16/8}
.latest-card.is-lead .card-title{font-size:21px}
.latest-card.is-lead .card-summary{-webkit-line-clamp:3}
.empty-state{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:12px;
  padding:56px 24px;border:1px dashed var(--line);border-radius:var(--r-card);
  background:var(--bg-1);text-align:center;
}
.empty-icon{
  width:44px;height:44px;border-radius:50%;display:grid;place-items:center;
  border:1px solid rgba(20,240,166,.4);color:var(--neon);font-size:18px;
}
.empty-state p{font-size:15px;color:var(--text-2)}

/* ---------- Rail ---------- */
.rail{display:grid;grid-template-columns:repeat(2,1fr) 320px;gap:20px;align-items:start}
.rail-card .card-media{aspect-ratio:16/9}
.rail-list{border:1px solid var(--line);border-radius:var(--r-card);background:var(--bg-1);padding:8px}
.rail-list li + li{border-top:1px solid var(--line-soft)}
.rail-list a{display:flex;gap:12px;align-items:flex-start;padding:14px;border-radius:10px;transition:background .18s}
.rail-list a:hover{background:var(--surface-2)}
.rail-list .dot{
  width:6px;height:6px;border-radius:50%;background:var(--amber);flex:none;margin-top:9px;
}
.rail-item-title{font-size:14px;line-height:1.6;color:var(--text-1)}
.rail-item-meta{margin-top:4px;font-size:12px;color:var(--text-3)}

/* ---------- CTA bar ---------- */
.cta-bar{
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center;
  padding:34px;border:1px solid var(--line);border-radius:var(--r-hero);
  background:linear-gradient(120deg,var(--bg-1),#101825 70%);
}
.cta-bar::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--neon),rgba(20,240,166,0));
}
.cta-title{font-size:22px;font-weight:700;line-height:1.4}
.cta-desc{margin-top:8px;font-size:14px;color:var(--text-2)}
.cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.copy-field{
  display:flex;align-items:center;height:48px;border:1px solid var(--line);
  border-radius:var(--r-input);background:var(--bg-0);overflow:hidden;
}
.copy-field input{
  width:200px;height:100%;padding:0 14px;border:0;background:transparent;
  color:var(--text-3);font-size:13px;
}
.copy-field input:focus{outline:none;color:var(--text-2)}
.copy-field button{
  height:100%;padding:0 16px;font-size:13px;color:var(--neon);
  border-left:1px solid var(--line);white-space:nowrap;
}
.copy-field button:hover{background:var(--neon-dim)}

/* ---------- FAQ ---------- */
.faq{border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--bg-1)}
.faq details + details{border-top:1px solid var(--line)}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 20px;font-size:16px;font-weight:600;
  cursor:pointer;list-style:none;transition:background .18s;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{background:var(--surface-2)}
.faq .chev{flex:none;width:16px;height:16px;color:var(--neon);transition:transform .2s ease-out}
.faq details[open] .chev{transform:rotate(180deg)}
.faq-body{padding:0 20px 20px;font-size:14px;line-height:1.85;color:var(--text-2)}
.faq details[open] .faq-body{
  margin-left:20px;padding-left:14px;border-left:2px solid var(--neon);
}

/* ---------- Footer ---------- */
.site-footer{position:relative;background:#070A11;border-top:1px solid var(--line);margin-top:0}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(20,240,166,.7),transparent);
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:32px;padding:64px 0 40px}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-brand strong{font-size:16px;font-weight:800}
.footer-intro{margin-top:14px;font-size:14px;line-height:1.8;color:var(--text-2);max-width:30em}
.footer-col h3{font-size:14px;font-weight:700;letter-spacing:.04em;color:var(--text-1);margin-bottom:16px}
.footer-col li + li{margin-top:10px}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-2);transition:color .18s}
.footer-col a:hover{color:var(--neon)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 32px;border-top:1px solid var(--line-soft);
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);border-bottom:1px solid var(--line)}
.footer-bottom a:hover{color:var(--neon);border-color:rgba(20,240,166,.5)}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 20px}
  .rail{grid-template-columns:repeat(2,1fr) 280px}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .section{padding:64px 0}
  .hero-grid{grid-template-columns:1fr;padding:52px 0 60px}
  .hero h1{font-size:32px}
  .hero-media{order:2;margin-top:8px}
  .index-grid{grid-template-columns:repeat(2,1fr)}
  .feature-layout{grid-template-columns:1fr}
  .latest-grid{grid-template-columns:repeat(2,1fr)}
  .rail{grid-template-columns:1fr 1fr}
  .rail-list{grid-column:span 2}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:52px 0 32px}
}
@media (max-width:767px){
  body{font-size:15px}
  .header-inner{height:56px;gap:12px}
  .logo-mark{width:32px;height:32px;border-radius:9px}
  .logo-text strong{font-size:13px}
  .logo-text em{display:none}
  .search-toggle{display:none}
  .hero h1{font-size:27px;line-height:1.3}
  .hero-sub{font-size:15px}
  .hero-stats{gap:24px}
  .stat{min-width:80px}
  .stat-num{font-size:20px}
  .section-title{font-size:22px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:26px}
  .index-grid{grid-template-columns:1fr}
  .latest-grid{grid-template-columns:1fr}
  .latest-card.is-lead{grid-column:span 1}
  .latest-card.is-lead .card-title{font-size:19px}
  .rail{grid-template-columns:1fr}
  .rail-list{grid-column:span 1}
  .cta-bar{grid-template-columns:1fr;padding:26px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:519px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .hero-grid{padding:40px 0 48px}
  .hero h1{font-size:24px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
  .cta-actions{flex-direction:column;align-items:stretch;width:100%}
  .cta-actions .btn{width:100%}
  .copy-field{width:100%}
  .copy-field input{width:100%;min-width:0}
  .card-body{padding:16px}
  .feature-main .card-body{padding:18px}
  .feature-main .card-title{font-size:19px}
  .index-item{padding:16px}
  .index-note{white-space:normal}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --bg-0:#070A11;
  --bg-1:#0D121B;
  --surface:#131A26;
  --surface-2:#1A2331;
  --line:#223046;
  --line-soft:rgba(255,255,255,.06);
  --neon:#14F0A6;
  --neon-dim:rgba(20,240,166,.16);
  --amber:#FFB020;
  --violet:#8B6CFF;
  --flare:#FF5A2B;
  --text-1:#E9EFF7;
  --text-2:#9AA9BE;
  --text-3:#63718A;
  --err:#FF5A5A;
  --r-card:14px;
  --r-btn:10px;
  --r-badge:6px;
  --r-hero:18px;
  --r-input:10px;
  --shadow-card:0 1px 0 rgba(255,255,255,.03) inset, 0 12px 32px rgba(0,0,0,.45);
  --glow:0 0 0 1px var(--neon), 0 0 24px rgba(20,240,166,.25);
  --container:1200px;
  --sec-space:88px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background-color:var(--bg-0);
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
  background-size:72px 72px;
  color:var(--text-1);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .18s ease-out;}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
::selection{background:var(--neon-dim);color:var(--text-1);}
:focus-visible{outline:3px solid rgba(20,240,166,.35);outline-offset:2px;border-radius:6px;}

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

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#0A0E16;
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";
  display:block;
  height:1px;
  background:linear-gradient(90deg, rgba(20,240,166,.85), rgba(20,240,166,.12) 55%, rgba(20,240,166,0));
}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:64px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.logo-mark{
  width:34px;
  height:34px;
  display:grid;
  place-items:center;
  border-radius:9px;
  background:linear-gradient(160deg, rgba(20,240,166,.18), rgba(20,240,166,.02));
  border:1px solid rgba(20,240,166,.35);
  box-shadow:0 0 18px rgba(20,240,166,.16);
}
.logo-mark svg{width:19px;height:19px;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{
  font-size:16px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--text-1);
}
.brand-text em{
  font-style:normal;
  font-size:11px;
  letter-spacing:.06em;
  color:var(--text-3);
}
.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  font-size:15px;
  color:var(--text-2);
  border-radius:8px;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--neon);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .18s ease-out;
}
.nav-link:hover{color:var(--text-1);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{
  color:var(--text-1);
  text-shadow:0 0 12px rgba(20,240,166,.5);
}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:8px;
}
.icon-btn{
  width:40px;
  height:40px;
  display:grid;
  place-items:center;
  border-radius:var(--r-btn);
  border:1px solid var(--line);
  color:var(--text-2);
  transition:border-color .18s ease-out, color .18s ease-out, box-shadow .18s ease-out;
}
.icon-btn:hover{color:var(--neon);border-color:rgba(20,240,166,.45);box-shadow:0 0 18px rgba(20,240,166,.18);}
.icon-btn svg{width:18px;height:18px;}
.menu-toggle{display:none;}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  transition:filter .18s ease-out, box-shadow .18s ease-out, transform .12s ease-out, background-color .18s ease-out, border-color .18s ease-out, color .18s ease-out;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--neon);color:#04120C;}
.btn-primary:hover{filter:brightness(1.08);box-shadow:var(--glow);}
.btn-ghost{border-color:var(--neon);color:var(--neon);}
.btn-ghost:hover{background:rgba(20,240,166,.1);box-shadow:0 0 20px rgba(20,240,166,.2);}
.btn-secondary{border-color:var(--line);color:var(--text-1);}
.btn-secondary:hover{border-color:rgba(20,240,166,.45);color:var(--neon);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}

.search-bar{
  border-top:1px solid var(--line);
  background:#0B1019;
  padding:14px 0 18px;
}
.search-bar[hidden]{display:none;}
.search-form{
  display:flex;
  gap:10px;
  max-width:640px;
}
.search-form input{
  flex:1;
  height:48px;
  padding:0 16px;
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:var(--r-input);
  color:var(--text-1);
  transition:border-color .18s ease-out, box-shadow .18s ease-out;
}
.search-form input::placeholder{color:var(--text-3);}
.search-form input:focus{
  outline:none;
  border-color:var(--neon);
  box-shadow:0 0 0 3px rgba(20,240,166,.15);
}

/* 移动端抽屉 */
.mobile-drawer{
  position:fixed;
  inset:0;
  z-index:80;
  background:#0A0E16;
  display:none;
  flex-direction:column;
  padding:18px 20px 32px;
  overflow-y:auto;
}
.mobile-drawer.is-open{display:flex;}
.drawer-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
  margin-bottom:8px;
}
.drawer-nav{display:flex;flex-direction:column;margin-top:12px;}
.drawer-nav a{
  padding:15px 12px;
  font-size:17px;
  color:var(--text-2);
  border-bottom:1px solid var(--line-soft);
}
.drawer-nav a.is-active{
  color:var(--text-1);
  border-left:2px solid var(--neon);
  text-shadow:0 0 12px rgba(20,240,166,.5);
}
.drawer-nav a:hover{color:var(--text-1);}

/* ============ 文章头 ============ */
.article-hero{
  position:relative;
  border-bottom:1px solid var(--line);
  background-image:
    linear-gradient(90deg, rgba(7,10,17,.96) 0%, rgba(7,10,17,.72) 48%, rgba(7,10,17,.35) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  padding:34px 0 46px;
}
.article-hero::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:1px;
  background:linear-gradient(90deg, var(--neon), rgba(20,240,166,0) 70%);
}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--neon);}
.breadcrumb span.sep{color:var(--text-3);}
.breadcrumb .current{color:var(--text-2);}
.article-hero h1{
  font-size:40px;
  line-height:1.22;
  font-weight:800;
  letter-spacing:-.01em;
  margin:14px 0 18px;
  max-width:22em;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 22px;
  font-size:14px;
  color:var(--text-2);
}
.article-meta .dot{
  width:5px;
  height:5px;
  border-radius:50%;
  background:var(--amber);
  display:inline-block;
  margin-right:8px;
  vertical-align:middle;
}
.share-row{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:26px;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 10px;
  border-radius:var(--r-badge);
  font-size:12px;
  letter-spacing:.08em;
  font-weight:600;
}
.badge-violet{background:rgba(139,108,255,.15);color:#B9A5FF;}
.badge-neon{background:var(--neon-dim);color:var(--neon);}

/* ============ 正文布局 ============ */
.article-main{padding:64px 0 0;}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 250px;
  gap:48px;
  align-items:start;
}
.article-shell{
  max-width:820px;
  width:100%;
}
.article-body{color:var(--text-1);}
.article-body > * + *{margin-top:18px;}
.article-body p{
  font-size:16px;
  line-height:1.86;
  color:#D6DEEA;
}
.article-body h2{
  position:relative;
  font-size:28px;
  line-height:1.36;
  font-weight:700;
  color:var(--text-1);
  margin-top:44px;
  padding-left:16px;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.36em;
  width:3px;
  height:.86em;
  border-radius:2px;
  background:linear-gradient(180deg, var(--neon), rgba(20,240,166,.2));
  box-shadow:0 0 12px rgba(20,240,166,.45);
}
.article-body h3{
  font-size:20px;
  line-height:1.45;
  font-weight:600;
  margin-top:32px;
  color:var(--text-1);
}
.article-body h4{
  font-size:17px;
  font-weight:600;
  margin-top:24px;
  color:var(--text-1);
}
.article-body ul,.article-body ol{
  padding-left:22px;
  color:#D6DEEA;
}
.article-body ul li{list-style:none;position:relative;padding-left:16px;margin-top:10px;}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:6px;
  height:6px;
  border-radius:2px;
  background:var(--neon);
  box-shadow:0 0 8px rgba(20,240,166,.5);
}
.article-body ol{counter-reset:item;list-style:none;}
.article-body ol li{position:relative;padding-left:30px;margin-top:10px;}
.article-body ol li::before{
  counter-increment:item;
  content:counter(item,decimal-leading-zero);
  position:absolute;
  left:0;
  top:0;
  font-size:13px;
  font-weight:700;
  color:var(--amber);
}
.article-body blockquote{
  background:var(--bg-1);
  border-left:3px solid var(--neon);
  border-radius:0 10px 10px 0;
  padding:16px 20px;
  color:var(--text-2);
  font-size:15px;
}
.article-body figure{margin:26px 0;}
.article-body img{
  width:100%;
  border-radius:12px;
  border:1px solid var(--line);
}
.article-body figcaption{
  margin-top:10px;
  font-size:12px;
  color:var(--text-3);
  text-align:center;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  font-size:14px;
  border:1px solid var(--line);
  border-radius:10px;
  overflow:hidden;
}
.article-body th,.article-body td{
  padding:11px 14px;
  text-align:left;
  border-bottom:1px solid var(--line-soft);
}
.article-body th{background:var(--surface);color:var(--text-2);font-weight:600;}
.article-body tbody tr:nth-child(odd){background:var(--bg-1);}
.article-body tbody tr:nth-child(even){background:var(--surface);}
.article-body strong{color:#FFFFFF;font-weight:700;}
.article-body a{
  color:var(--neon);
  border-bottom:1px solid rgba(20,240,166,.4);
}
.article-body a:hover{border-bottom-color:var(--neon);}
.article-body hr{
  border:0;
  height:1px;
  background:linear-gradient(90deg, rgba(20,240,166,.6), rgba(20,240,166,0));
  margin:32px 0;
}

/* 阅读进度 */
.read-progress{
  position:fixed;
  top:0;
  left:0;
  height:2px;
  width:0;
  background:linear-gradient(90deg, var(--neon), var(--amber));
  z-index:90;
  transition:width .1s linear;
}

/* 右侧目录 */
.article-side{position:sticky;top:88px;}
.toc{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:18px 18px 20px;
  box-shadow:var(--shadow-card);
}
.toc h2{
  font-size:12px;
  letter-spacing:.08em;
  color:var(--text-3);
  font-weight:700;
  text-transform:uppercase;
  margin-bottom:12px;
}
.toc a{
  display:block;
  font-size:14px;
  color:var(--text-2);
  padding:7px 10px;
  border-left:2px solid transparent;
  border-radius:0 8px 8px 0;
}
.toc a:hover{background:var(--surface-2);color:var(--text-1);}
.toc a.is-current{
  color:var(--neon);
  border-left-color:var(--neon);
  background:rgba(20,240,166,.07);
}
.toc-empty{
  font-size:13px;
  color:var(--text-3);
  line-height:1.7;
}

/* 空态 */
.article-empty{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:44px 32px;
  text-align:center;
  box-shadow:var(--shadow-card);
}
.article-empty .empty-icon{
  width:52px;
  height:52px;
  margin:0 auto 18px;
  border-radius:50%;
  display:grid;
  place-items:center;
  border:1px solid rgba(20,240,166,.35);
  background:var(--neon-dim);
  color:var(--neon);
}
.article-empty h2{font-size:22px;font-weight:700;margin-bottom:10px;}
.article-empty p{color:var(--text-2);font-size:15px;max-width:520px;margin:0 auto 22px;}

/* 标签行 */
.tag-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-top:44px;
  padding-top:24px;
  border-top:1px solid var(--line);
}
.tag-row .tag-label{font-size:13px;color:var(--text-3);letter-spacing:.06em;}
.tag{
  display:inline-block;
  padding:5px 12px;
  border-radius:var(--r-badge);
  border:1px solid var(--line);
  background:var(--bg-1);
  font-size:13px;
  color:var(--text-2);
}
.tag:hover{border-color:rgba(20,240,166,.45);color:var(--neon);}

/* ============ 通用板块 ============ */
.section{padding:var(--sec-space) 0;}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{margin-bottom:34px;}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--neon);
  margin-bottom:10px;
}
.section-head h2{
  font-size:28px;
  font-weight:700;
  line-height:1.36;
  letter-spacing:-.01em;
}
.section-head p{
  margin-top:10px;
  font-size:15px;
  color:var(--text-2);
  max-width:720px;
}

/* 相关推荐卡片 */
.grid-cards{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  display:flex;
  flex-direction:column;
  transition:transform .18s ease-out, border-color .18s ease-out, box-shadow .18s ease-out;
}
.card:hover{
  transform:translateY(-2px);
  border-color:rgba(20,240,166,.45);
  box-shadow:0 0 0 1px rgba(20,240,166,.2), 0 18px 40px rgba(0,0,0,.5);
}
.card-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--bg-1);
}
.card-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .25s ease-out;
}
.card:hover .card-thumb img{transform:scale(1.04);}
.card-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{
  font-size:17px;
  line-height:1.5;
  font-weight:600;
  color:var(--text-1);
}
.card-body p{
  font-size:14px;
  line-height:1.7;
  color:var(--text-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:12px;
  color:var(--text-3);
}

/* 上一篇 / 下一篇 */
.pager{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
}
.pager-item{
  display:block;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:18px 22px;
  box-shadow:var(--shadow-card);
  transition:border-color .18s ease-out, transform .18s ease-out;
}
.pager-item:hover{border-color:rgba(20,240,166,.45);transform:translateY(-2px);}
.pager-item span{
  display:block;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--text-3);
  margin-bottom:8px;
}
.pager-item strong{
  font-size:16px;
  font-weight:600;
  color:var(--text-1);
  line-height:1.5;
  display:block;
}
.pager-item.is-next{text-align:right;}

/* 返回入口 */
.back-entry{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px 26px;
}
.back-entry p{font-size:15px;color:var(--text-2);}
.back-entry strong{color:var(--text-1);font-weight:600;}

/* 收藏 / 分享条 */
.cta-strip{
  background:var(--bg-1);
  border-top:1px solid var(--line);
  position:relative;
  padding:36px 0;
}
.cta-strip::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;
  height:1px;
  background:linear-gradient(90deg, rgba(20,240,166,.9), rgba(20,240,166,0) 65%);
}
.cta-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:18px 24px;
  justify-content:space-between;
}
.cta-inner h2{font-size:20px;font-weight:700;}
.cta-inner p{font-size:14px;color:var(--text-2);margin-top:6px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
.copy-field{
  display:flex;
  align-items:center;
  height:44px;
  background:var(--bg-0);
  border:1px solid var(--line);
  border-radius:var(--r-input);
  overflow:hidden;
}
.copy-field input{
  width:230px;
  height:100%;
  border:0;
  background:transparent;
  padding:0 14px;
  font-size:13px;
  color:var(--text-2);
}
.copy-field input:focus{outline:none;box-shadow:inset 0 0 0 2px rgba(20,240,166,.35);}
.copy-field button{
  height:100%;
  padding:0 16px;
  font-size:13px;
  color:var(--neon);
  border-left:1px solid var(--line);
}
.copy-field button:hover{background:rgba(20,240,166,.1);}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-0);
  border-top:1px solid var(--line);
  position:relative;
  padding:64px 0 26px;
}
.site-footer::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;
  height:1px;
  background:linear-gradient(90deg, rgba(20,240,166,.85), rgba(20,240,166,.05) 60%, rgba(20,240,166,0));
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:36px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.footer-brand strong{font-size:16px;font-weight:800;}
.footer-intro{
  font-size:14px;
  line-height:1.8;
  color:var(--text-2);
  max-width:360px;
}
.footer-col h3{
  font-size:13px;
  letter-spacing:.08em;
  color:var(--text-3);
  font-weight:700;
  margin-bottom:14px;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a,
.footer-col ul li span{
  font-size:14px;
  color:var(--text-2);
}
.footer-col ul li a:hover{color:var(--neon);}
.footer-bottom{
  margin-top:44px;
  padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:12px;
  color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr) 220px;gap:36px;}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .menu-toggle{display:grid;}
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .article-side{display:none;}
  .article-hero h1{font-size:34px;}
  .grid-cards{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px;}
}
@media (max-width:767px){
  :root{--sec-space:56px;}
  .container{padding:0 16px;}
  .header-inner{height:56px;gap:12px;}
  .brand-text strong{font-size:14px;}
  .brand-text em{display:none;}
  .header-actions .btn-primary{display:none;}
  .article-hero{padding:24px 0 34px;}
  .article-hero h1{font-size:28px;line-height:1.3;}
  .article-main{padding:44px 0 0;}
  .article-body h2{font-size:22px;}
  .article-body h3{font-size:18px;}
  .grid-cards{grid-template-columns:minmax(0,1fr);}
  .pager{grid-template-columns:minmax(0,1fr);}
  .pager-item.is-next{text-align:left;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;flex-direction:column;align-items:stretch;}
  .cta-actions .btn{width:100%;}
  .copy-field{width:100%;}
  .copy-field input{flex:1;width:auto;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px;}
}
@media (max-width:520px){
  .article-hero h1{font-size:25px;}
  .section-head h2{font-size:22px;}
  .article-empty{padding:32px 20px;}
  .search-form{flex-direction:column;}
  .search-form .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}

/* roulang page: category1 */
:root{
  --bg-0:#070A11;
  --bg-1:#0D121B;
  --surface:#131A26;
  --surface-2:#1A2331;
  --line:#223046;
  --line-soft:rgba(255,255,255,.06);
  --neon:#14F0A6;
  --neon-dim:rgba(20,240,166,.16);
  --amber:#FFB020;
  --violet:#8B6CFF;
  --flare:#FF5A2B;
  --text-1:#E9EFF7;
  --text-2:#9AA9BE;
  --text-3:#63718A;
  --ok:#14F0A6;
  --err:#FF5A5A;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-badge:6px;
  --radius-hero:18px;
  --shadow-card:0 1px 0 rgba(255,255,255,.03) inset, 0 12px 32px rgba(0,0,0,.45);
  --shadow-hover:0 0 0 1px var(--neon), 0 0 24px rgba(20,240,166,.25);
  --container:1200px;
  --gap:24px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--neon);}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
input,textarea,select{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
strong{font-weight:700;}
:focus-visible{outline:3px solid rgba(20,240,166,.35);outline-offset:2px;}
::selection{background:rgba(20,240,166,.28);color:#fff;}

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

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#0A0E16;
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,rgba(20,240,166,0) 0%,var(--neon) 12%,rgba(20,240,166,.35) 58%,rgba(20,240,166,0) 100%);
  pointer-events:none;
}
.header-inner{display:flex;align-items:center;gap:18px;height:64px;}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.logo-mark{
  width:38px;height:38px;flex:0 0 38px;display:grid;place-items:center;
  border-radius:10px;background:rgba(20,240,166,.08);
  border:1px solid rgba(20,240,166,.35);
}
.logo-mark svg{width:20px;height:20px;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:15px;font-weight:800;letter-spacing:.01em;color:var(--text-1);}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.06em;color:var(--text-3);margin-top:3px;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:26px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:64px;
  padding:0 14px;color:var(--text-2);font-size:15px;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;
  background:var(--neon);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .18s ease;
}
.nav-link:hover{color:var(--text-1);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--text-1);text-shadow:0 0 12px rgba(20,240,166,.5);}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:40px;height:40px;display:grid;place-items:center;
  background:transparent;border:1px solid var(--line);border-radius:10px;
  color:var(--text-2);transition:all .18s ease;
}
.icon-btn:hover{color:var(--text-1);border-color:rgba(20,240,166,.45);background:var(--surface-2);}
.icon-btn svg{width:18px;height:18px;}
.menu-toggle{display:none;}

.search-panel{
  border-top:1px solid var(--line);
  background:var(--bg-1);
  padding:14px 0;
}
.search-panel[hidden]{display:none;}
.search-form{display:flex;gap:12px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:all .18s ease;white-space:nowrap;text-align:center;
}
.btn:active{transform:translateY(1px);}
.btn-primary{
  background:var(--neon);color:#04120C;border-color:var(--neon);
}
.btn-primary:hover{color:#04120C;filter:brightness(1.08);box-shadow:0 0 22px rgba(20,240,166,.35);}
.btn-ghost{
  background:transparent;color:var(--neon);border-color:rgba(20,240,166,.6);
}
.btn-ghost:hover{color:var(--neon);background:rgba(20,240,166,.08);box-shadow:0 0 18px rgba(20,240,166,.22);}
.btn-outline{
  background:transparent;color:var(--text-1);border-color:var(--line);
}
.btn-outline:hover{color:var(--text-1);border-color:rgba(20,240,166,.45);background:var(--surface-2);}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 9px;
  border-radius:var(--radius-badge);font-size:12px;font-weight:600;letter-spacing:.04em;
}
.badge-violet{background:rgba(139,108,255,.15);color:#B6A2FF;}
.badge-neon{background:rgba(20,240,166,.14);color:var(--neon);}
.badge-amber{background:rgba(255,176,32,.14);color:var(--amber);}
.tag-time{font-size:12px;color:var(--text-3);letter-spacing:.04em;font-variant-numeric:tabular-nums;}

/* ---------- 页面横幅 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:#0A0E16;border-bottom:1px solid var(--line);
}
.page-hero__bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-1.png);
  background-size:cover;background-position:center;
  opacity:.34;
}
.page-hero__bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,#070A11 0%,rgba(7,10,17,.88) 42%,rgba(7,10,17,.36) 100%);
}
.page-hero__inner{position:relative;padding:52px 0 46px;max-width:840px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;color:var(--neon);
  text-transform:uppercase;margin-bottom:16px;
}
.eyebrow::before{
  content:"";width:22px;height:1px;background:var(--neon);display:inline-block;
}
.page-hero h1{
  font-size:40px;line-height:1.2;font-weight:800;letter-spacing:-.01em;
  margin-bottom:16px;
}
.page-hero__lead{
  color:var(--text-2);font-size:17px;line-height:1.85;max-width:640px;
  margin-bottom:12px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:38px;margin-top:34px;
  padding-top:24px;border-top:1px solid var(--line-soft);
}
.stat-item{display:flex;flex-direction:column;gap:4px;}
.stat-num{
  font-size:24px;font-weight:800;color:var(--amber);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.stat-label{font-size:12px;color:var(--text-3);letter-spacing:.06em;}

.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);margin-bottom:22px;
}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--neon);}
.breadcrumb span.sep{color:var(--text-3);}

/* ---------- 板块 ---------- */
.section{padding:64px 0;}
.section--tight{padding:48px 0;}
.section--alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section--grid{
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:64px 64px;
}
.section-head{margin-bottom:32px;max-width:780px;}
.section-head h2{
  position:relative;padding-left:14px;
  font-size:28px;line-height:1.35;font-weight:700;letter-spacing:-.005em;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;
  border-radius:2px;background:linear-gradient(180deg,var(--neon),rgba(20,240,166,.15));
}
.section-head p{color:var(--text-2);font-size:15px;line-height:1.85;margin-top:12px;}
.section-head--center{max-width:720px;margin:0 auto 32px;text-align:center;}
.section-head--center h2{padding-left:0;}
.section-head--center h2::before{
  left:50%;top:-14px;bottom:auto;transform:translateX(-50%);
  width:46px;height:2px;
  background:linear-gradient(90deg,rgba(20,240,166,0),var(--neon),rgba(20,240,166,0));
}
.divider-neon{
  height:1px;
  background:linear-gradient(90deg,var(--neon),rgba(20,240,166,.12) 62%,rgba(20,240,166,0));
}

/* ---------- 编号索引 ---------- */
.toc-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
}
.toc-item{
  position:relative;display:flex;flex-direction:column;gap:10px;
  padding:20px 18px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--surface);transition:all .18s ease;
}
.toc-item::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:2px;
  background:var(--neon);border-radius:2px;opacity:0;transition:opacity .18s ease;
}
.toc-item:hover{background:var(--surface-2);transform:translateY(-2px);border-color:rgba(20,240,166,.45);}
.toc-item:hover::before{opacity:1;}
.toc-num{
  font-size:14px;font-weight:800;color:var(--amber);
  font-variant-numeric:tabular-nums;letter-spacing:.08em;
}
.toc-item h3{font-size:16px;font-weight:600;line-height:1.5;}
.toc-item p{font-size:13px;color:var(--text-3);line-height:1.7;}
.toc-arrow{font-size:12px;color:var(--neon);margin-top:auto;letter-spacing:.06em;}

/* ---------- 卡片 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  transition:all .18s ease;
}
.card:hover{transform:translateY(-2px);border-color:rgba(20,240,166,.45);}
.card-media{
  position:relative;display:block;aspect-ratio:16/9;overflow:hidden;background:var(--bg-1);
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .18s ease-out;}
.card:hover .card-media img{transform:scale(1.04);}
.card-body{display:flex;flex-direction:column;gap:10px;padding:20px;flex:1;}
.card-body h3{font-size:17px;font-weight:600;line-height:1.55;}
.card-body h3 a:hover{color:var(--neon);}
.card-body p{font-size:14px;line-height:1.72;color:var(--text-2);}
.card-meta{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line-soft);
  font-size:12px;color:var(--text-3);
}
.card--wide{grid-column:span 2;flex-direction:row;}
.card--wide .card-media{flex:0 0 46%;aspect-ratio:auto;min-height:230px;}
.card--wide .card-body{padding:26px;justify-content:center;}

/* ---------- 步骤流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step;}
.step{
  position:relative;padding:22px 20px 20px;
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius-card);
}
.step::before{
  counter-increment:step;content:"0" counter(step);
  display:block;font-size:13px;font-weight:800;color:var(--amber);
  font-variant-numeric:tabular-nums;letter-spacing:.1em;margin-bottom:12px;
}
.step h3{font-size:16px;font-weight:600;margin-bottom:8px;}
.step p{font-size:13px;line-height:1.75;color:var(--text-2);}

/* ---------- 清单列表 ---------- */
.check-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;}
.check-item{
  display:flex;gap:14px;padding:18px 20px;
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius-card);
  transition:all .18s ease;
}
.check-item:hover{border-color:rgba(20,240,166,.4);background:var(--surface);}
.check-mark{
  flex:0 0 26px;width:26px;height:26px;border-radius:8px;
  display:grid;place-items:center;background:rgba(20,240,166,.12);
  color:var(--neon);font-size:13px;font-weight:800;
}
.check-item h3{font-size:15px;font-weight:600;margin-bottom:6px;}
.check-item p{font-size:13px;line-height:1.72;color:var(--text-2);}

/* ---------- 交叉推荐 ---------- */
.cross{
  display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:center;
  padding:32px;border:1px solid var(--line);border-radius:var(--radius-hero);
  background:linear-gradient(135deg,var(--surface) 0%,var(--bg-1) 100%);
}
.cross h2{font-size:24px;font-weight:700;margin-bottom:12px;}
.cross p{color:var(--text-2);font-size:15px;line-height:1.85;margin-bottom:20px;}
.cross-media{
  border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);
}
.cross-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.cross-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}

/* ---------- 收藏 / 分享条 ---------- */
.share-bar{
  background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  position:relative;
}
.share-bar::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--neon),rgba(20,240,166,.1) 70%,rgba(20,240,166,0));
}
.share-inner{
  display:flex;align-items:center;gap:24px;flex-wrap:wrap;
  padding:26px 0;
}
.share-inner h2{font-size:18px;font-weight:700;}
.share-inner .share-text{font-size:13px;color:var(--text-3);}
.share-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex-wrap:wrap;}
.copy-field{
  display:flex;align-items:center;height:44px;border:1px solid var(--line);
  border-radius:var(--radius-btn);background:var(--bg-0);overflow:hidden;
}
.copy-field input{
  width:220px;height:100%;padding:0 14px;border:0;background:transparent;
  color:var(--text-2);font-size:13px;outline:none;
}
.copy-field button{
  height:100%;padding:0 16px;border:0;background:transparent;
  color:var(--neon);font-size:13px;font-weight:600;border-left:1px solid var(--line);
  transition:background .18s ease;
}
.copy-field button:hover{background:rgba(20,240,166,.1);}

/* ---------- FAQ ---------- */
.faq-list{
  border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;background:var(--bg-1);
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  position:relative;display:flex;align-items:center;justify-content:space-between;
  gap:16px;min-height:56px;padding:15px 22px;
  font-size:16px;font-weight:600;color:var(--text-1);
  cursor:pointer;list-style:none;transition:background .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:var(--surface);}
.faq-item summary::after{
  content:"";flex:0 0 10px;width:10px;height:10px;margin-left:auto;
  border-right:2px solid var(--text-3);border-bottom:2px solid var(--text-3);
  transform:rotate(45deg);transition:transform .2s ease,border-color .2s ease;
}
.faq-item[open] summary::after{transform:rotate(-135deg);border-color:var(--neon);}
.faq-item[open] summary{color:var(--neon);}
.faq-a{
  position:relative;padding:0 22px 20px 22px;
  font-size:14px;line-height:1.78;color:var(--text-2);
}
.faq-a::before{
  content:"";position:absolute;left:0;top:2px;bottom:22px;width:2px;background:var(--neon);
}
.faq-a p + p{margin-top:10px;}

/* ---------- 表单 ---------- */
.form-card{
  display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center;
  padding:34px;border:1px solid var(--line);border-radius:var(--radius-hero);
  background:var(--surface);box-shadow:var(--shadow-card);
}
.form-card h2{font-size:24px;font-weight:700;margin-bottom:12px;}
.form-card p{font-size:14px;line-height:1.8;color:var(--text-2);}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:14px;}
.field label{font-size:13px;color:var(--text-3);letter-spacing:.04em;}
.field input{
  height:48px;padding:0 14px;border-radius:var(--radius-btn);
  border:1px solid var(--line);background:var(--bg-1);
  color:var(--text-1);outline:none;transition:border-color .18s ease,box-shadow .18s ease;
}
.field input::placeholder{color:var(--text-3);}
.field input:focus{border-color:var(--neon);box-shadow:0 0 0 3px rgba(20,240,166,.15);}
.field input.is-error{border-color:var(--err);}
.field .field-hint{font-size:12px;color:var(--err);min-height:16px;}
.form-row{display:flex;gap:12px;align-items:flex-start;}
.form-note{font-size:12px;color:var(--text-3);margin-top:12px;line-height:1.7;}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:#070A11;color:var(--text-2);
  padding:56px 0 28px;border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--neon),rgba(20,240,166,.12) 60%,rgba(20,240,166,0));
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand strong{font-size:16px;color:var(--text-1);}
.footer-intro{font-size:13px;line-height:1.85;color:var(--text-3);max-width:340px;}
.footer-col h3{
  font-size:14px;font-weight:700;color:var(--text-1);margin-bottom:16px;
  letter-spacing:.02em;
}
.footer-col ul li{margin-bottom:10px;font-size:13px;color:var(--text-3);line-height:1.7;}
.footer-col ul li a{color:var(--text-2);}
.footer-col ul li a:hover{color:var(--neon);}
.footer-bottom{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  margin-top:42px;padding-top:20px;border-top:1px solid var(--line-soft);
  font-size:12px;color:var(--text-3);
}

/* ---------- 移动抽屉 ---------- */
.mobile-drawer{
  position:fixed;inset:0;z-index:90;background:#0A0E16;
  display:flex;flex-direction:column;padding:18px 20px 32px;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s;
}
.mobile-drawer.is-open{opacity:1;visibility:visible;transform:none;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{
  position:relative;padding:15px 16px;border-radius:10px;
  color:var(--text-2);font-size:17px;font-weight:600;
  border-left:2px solid transparent;
}
.drawer-nav a:hover{background:var(--surface);color:var(--text-1);}
.drawer-nav a.is-active{
  color:var(--text-1);border-left-color:var(--neon);
  background:rgba(20,240,166,.06);
}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .toc-grid{grid-template-columns:repeat(2,1fr);}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .card--wide{grid-column:span 2;}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .menu-toggle{display:grid;}
  .page-hero h1{font-size:34px;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .cross{grid-template-columns:1fr;gap:24px;}
  .form-card{grid-template-columns:1fr;gap:22px;padding:26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .share-actions{margin-left:0;width:100%;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .header-inner{height:56px;gap:10px;}
  .brand-text strong{font-size:13px;}
  .brand-text em{display:none;}
  .header-actions .btn{display:none;}
  .section{padding:56px 0;}
  .page-hero__inner{padding:38px 0 34px;}
  .page-hero h1{font-size:28px;line-height:1.3;}
  .page-hero__lead{font-size:15px;}
  .section-head h2{font-size:22px;}
  .card-grid{grid-template-columns:1fr;}
  .card--wide{grid-column:span 1;flex-direction:column;}
  .card--wide .card-media{flex:none;aspect-ratio:16/9;min-height:0;}
  .card--wide .card-body{padding:20px;}
  .toc-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .check-list{grid-template-columns:1fr;}
  .hero-stats{gap:24px;}
  .stat-num{font-size:20px;}
  .share-inner{padding:22px 0;gap:16px;}
  .share-actions{flex-direction:column;align-items:stretch;}
  .share-actions .btn{width:100%;}
  .copy-field{width:100%;}
  .copy-field input{width:100%;}
  .form-row{flex-direction:column;}
  .form-row .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .search-form{flex-direction:column;}
}
@media (max-width:480px){
  .page-hero h1{font-size:25px;}
  .section-head h2{font-size:20px;}
  .btn{width:100%;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .faq-item summary{font-size:15px;padding:14px 16px;}
  .faq-a{padding:0 16px 18px 16px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --bg-0:#070A11;
  --bg-1:#0D121B;
  --surface:#131A26;
  --surface-2:#1A2331;
  --line:#223046;
  --line-soft:rgba(255,255,255,.06);
  --neon:#14F0A6;
  --neon-dim:rgba(20,240,166,.16);
  --amber:#FFB020;
  --violet:#8B6CFF;
  --flare:#FF5A2B;
  --text-1:#E9EFF7;
  --text-2:#9AA9BE;
  --text-3:#63718A;
  --ok:#14F0A6;
  --err:#FF5A5A;
  --r-card:14px;
  --r-btn:10px;
  --r-badge:6px;
  --r-hero:18px;
  --shadow-card:0 1px 0 rgba(255,255,255,.03) inset, 0 12px 32px rgba(0,0,0,.45);
  --glow:0 0 0 1px var(--neon), 0 0 24px rgba(20,240,166,.25);
  --container:1200px;
  --gap:24px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--text-1);text-decoration:none;transition:color .18s ease-out,border-color .18s ease-out;}
a:hover{color:var(--neon);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input{font:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.35;letter-spacing:-0.01em;}
p{margin:0 0 18px;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(20,240,166,.35);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#0A0E16;
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";
  display:block;
  height:1px;
  background:linear-gradient(90deg,rgba(20,240,166,0),rgba(20,240,166,.85),rgba(20,240,166,0));
}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  min-height:64px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:36px;height:36px;flex:0 0 36px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);
  border-radius:10px;
  background:linear-gradient(160deg,rgba(20,240,166,.14),rgba(13,18,27,.9));
}
.logo-mark svg{width:20px;height:20px;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:15px;font-weight:700;letter-spacing:.01em;color:var(--text-1);}
.brand-text span{font-size:11px;letter-spacing:.06em;color:var(--text-3);}

.main-nav{display:flex;align-items:center;gap:6px;margin-left:8px;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:22px 14px;
  font-size:15px;
  color:var(--text-2);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:14px;
  height:2px;
  background:var(--neon);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .18s ease-out;
}
.nav-link:hover{color:var(--text-1);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--text-1);text-shadow:0 0 12px rgba(20,240,166,.5);}
.nav-link.is-active::after{transform:scaleX(1);}

.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.icon-btn{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  color:var(--text-2);
  transition:border-color .18s ease-out,color .18s ease-out;
}
.icon-btn:hover{border-color:rgba(20,240,166,.45);color:var(--text-1);}
.icon-btn svg{width:18px;height:18px;}
.nav-toggle{display:none;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  transition:filter .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,color .18s ease-out,transform .12s ease-out;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--neon);color:#04120C;}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 0 1px var(--neon),0 0 24px rgba(20,240,166,.25);color:#04120C;}
.btn-ghost{border:1px solid var(--neon);color:var(--neon);}
.btn-ghost:hover{background:var(--neon-dim);color:var(--neon);box-shadow:0 0 20px rgba(20,240,166,.18);}
.btn-secondary{border:1px solid var(--line);color:var(--text-1);}
.btn-secondary:hover{border-color:rgba(20,240,166,.45);color:var(--text-1);}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}

.search-bar{
  display:none;
  border-top:1px solid var(--line);
  background:#0A0E16;
}
.search-bar.is-open{display:block;}
.search-bar form{display:flex;gap:12px;padding:14px 0;}
.search-input{
  flex:1;
  height:48px;
  padding:0 16px;
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  color:var(--text-1);
}
.search-input::placeholder{color:var(--text-3);}
.search-input:focus{outline:none;border-color:var(--neon);box-shadow:0 0 0 3px rgba(20,240,166,.15);}

/* 移动抽屉 */
.mobile-drawer{
  display:none;
  position:fixed;
  inset:0;
  z-index:80;
  background:#0A0E16;
  padding:20px 20px 40px;
  overflow-y:auto;
}
.mobile-drawer.is-open{display:block;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-links a{
  display:block;
  padding:16px 14px;
  font-size:17px;
  color:var(--text-2);
  border-bottom:1px solid var(--line-soft);
}
.drawer-links a.is-active{color:var(--text-1);border-left:2px solid var(--neon);background:var(--surface);}

/* ---------- 页头横幅 ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background-color:var(--bg-1);
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  opacity:.34;
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(7,10,17,.55),rgba(7,10,17,.94)),
    repeating-linear-gradient(90deg,rgba(255,255,255,.03) 0 1px,transparent 1px 64px);
}
.page-hero .container{position:relative;z-index:2;}
.hero-inner{
  max-width:840px;
  margin:0 auto;
  padding:76px 0 68px;
  text-align:center;
}
.breadcrumb{
  display:flex;justify-content:center;gap:8px;
  font-size:13px;color:var(--text-3);margin-bottom:20px;
}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--neon);}
.eyebrow{
  display:inline-block;
  padding:5px 12px;
  margin-bottom:18px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--violet);
  background:rgba(139,108,255,.15);
  border-radius:var(--r-badge);
}
.page-hero h1{
  font-size:40px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--text-1);
}
.page-hero h1 em{font-style:normal;color:var(--neon);}
.hero-lead{
  margin:20px auto 0;
  max-width:660px;
  font-size:17px;
  color:var(--text-2);
}
.hero-facts{
  display:flex;justify-content:center;flex-wrap:wrap;gap:36px;
  margin-top:34px;
  padding-top:26px;
  border-top:1px solid var(--line-soft);
}
.fact{text-align:center;}
.fact b{display:block;font-size:24px;font-weight:700;color:var(--amber);font-variant-numeric:tabular-nums;}
.fact span{font-size:12px;letter-spacing:.06em;color:var(--text-3);}

/* ---------- 通用板块 ---------- */
.section{padding:64px 0;}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:720px;margin-bottom:34px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head h2{
  position:relative;
  font-size:28px;
  font-weight:700;
  padding-left:16px;
}
.section-head h2::before{
  content:"";
  position:absolute;left:0;top:6px;bottom:6px;
  width:3px;border-radius:2px;
  background:linear-gradient(180deg,var(--neon),rgba(20,240,166,.15));
}
.section-head.center h2{padding-left:0;padding-top:16px;}
.section-head.center h2::before{
  left:50%;top:0;bottom:auto;
  width:56px;height:2px;transform:translateX(-50%);
  background:linear-gradient(90deg,rgba(20,240,166,0),var(--neon),rgba(20,240,166,0));
}
.section-head p{margin-top:12px;color:var(--text-2);font-size:15px;}

/* ---------- 编号目录 ---------- */
.toc-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
}
.toc-item{
  position:relative;
  display:block;
  padding:18px 20px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  transition:background .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
}
.toc-item::before{
  content:"";
  position:absolute;left:0;top:14px;bottom:14px;
  width:2px;background:var(--neon);
  transform:scaleY(0);
  transform-origin:top;
  transition:transform .18s ease-out;
}
.toc-item:hover{background:var(--surface-2);border-color:rgba(20,240,166,.45);transform:translateY(-2px);}
.toc-item:hover::before{transform:scaleY(1);}
.toc-item .idx{
  display:block;
  font-size:13px;
  font-weight:700;
  color:var(--amber);
  font-variant-numeric:tabular-nums;
  margin-bottom:6px;
}
.toc-item strong{display:block;font-size:16px;color:var(--text-1);margin-bottom:4px;}
.toc-item span.desc{display:block;font-size:13px;color:var(--text-3);}

/* ---------- 横向长条卡 ---------- */
.rowcards{display:grid;gap:18px;}
.rowcard{
  display:grid;
  grid-template-columns:300px 1fr;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .18s ease-out,border-color .18s ease-out;
}
.rowcard:hover{transform:translateY(-2px);border-color:rgba(20,240,166,.45);}
.rowcard__media{position:relative;min-height:172px;overflow:hidden;background:var(--bg-1);}
.rowcard__media img{width:100%;height:100%;object-fit:cover;transition:transform .18s ease-out;}
.rowcard:hover .rowcard__media img{transform:scale(1.04);}
.rowcard__media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(7,10,17,.5),rgba(7,10,17,0) 62%);
}
.rowcard__body{padding:20px 24px;display:flex;flex-direction:column;gap:10px;}
.rowcard__meta{display:flex;align-items:center;gap:12px;font-size:12px;letter-spacing:.06em;color:var(--text-3);}
.badge{
  display:inline-block;
  padding:3px 9px;
  font-size:12px;
  letter-spacing:.04em;
  border-radius:var(--r-badge);
  color:var(--violet);
  background:rgba(139,108,255,.15);
}
.rowcard__body h3{font-size:19px;font-weight:600;}
.rowcard__body h3 a{color:var(--text-1);}
.rowcard__body h3 a:hover{color:var(--neon);}
.rowcard__body p{font-size:14px;line-height:1.72;color:var(--text-2);margin:0;}
.rowcard__foot{
  margin-top:auto;
  padding-top:10px;
  border-top:1px dashed var(--line-soft);
  display:flex;justify-content:space-between;align-items:center;
  font-size:12px;color:var(--text-3);
}
.tagline{color:var(--amber);font-variant-numeric:tabular-nums;}

/* ---------- 数据看板 ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.stat{
  padding:22px;
  background:var(--bg-0);
  border:1px solid var(--line);
  border-radius:var(--r-card);
}
.section-alt .stat{background:var(--surface);}
.stat b{display:block;font-size:30px;font-weight:800;color:var(--text-1);font-variant-numeric:tabular-nums;}
.stat b i{font-style:normal;font-size:15px;color:var(--amber);margin-left:4px;}
.stat span{display:block;margin-top:8px;font-size:13px;color:var(--text-3);}

/* ---------- 排名行 ---------- */
.rank-list{
  margin-top:26px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  background:var(--surface);
}
.rank-row{
  display:grid;
  grid-template-columns:64px 1.4fr 1fr 1fr 1fr;
  align-items:center;
  gap:12px;
  padding:15px 22px;
  border-bottom:1px solid var(--line-soft);
  font-size:14px;
  font-variant-numeric:tabular-nums;
}
.rank-row:last-child{border-bottom:0;}
.rank-row.head{
  background:var(--bg-1);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--text-3);
  text-transform:none;
}
.rank-row .pos{color:var(--amber);font-weight:700;}
.rank-row .name{color:var(--text-1);font-weight:600;}
.rank-row .val{color:var(--text-2);}
.rank-row:not(.head):hover{background:var(--surface-2);}

/* ---------- 参数卡 ---------- */
.param-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:26px;}
.param{
  padding:22px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  transition:transform .18s ease-out,border-color .18s ease-out;
}
.param:hover{transform:translateY(-2px);border-color:rgba(20,240,166,.45);}
.param h3{font-size:17px;margin-bottom:10px;}
.param p{font-size:14px;color:var(--text-2);line-height:1.72;}
.param ul{margin-top:14px;display:grid;gap:8px;}
.param li{
  position:relative;
  padding-left:16px;
  font-size:13px;
  color:var(--text-3);
}
.param li::before{
  content:"";
  position:absolute;left:0;top:9px;
  width:6px;height:6px;border-radius:50%;
  background:var(--neon);opacity:.75;
}

/* ---------- 说明流程 ---------- */
.steps{display:grid;gap:14px;margin-top:26px;}
.step{
  display:grid;
  grid-template-columns:56px 1fr;
  gap:18px;
  align-items:start;
  padding:20px 22px;
  background:var(--bg-0);
  border:1px solid var(--line);
  border-left:2px solid rgba(20,240,166,.45);
  border-radius:10px;
}
.section-alt .step{background:var(--surface);}
.step .no{
  font-size:20px;font-weight:800;color:var(--amber);
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:16px;margin-bottom:6px;}
.step p{font-size:14px;color:var(--text-2);}

/* ---------- 交叉推荐 ---------- */
.cross{
  display:grid;
  grid-template-columns:1.2fr 1fr;
  gap:24px;
  align-items:center;
  padding:32px;
  background:linear-gradient(135deg,var(--surface),var(--bg-1));
  border:1px solid var(--line);
  border-radius:var(--r-hero);
  position:relative;
  overflow:hidden;
}
.cross::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,var(--neon),rgba(20,240,166,0));
}
.cross h2{font-size:24px;margin-bottom:12px;}
.cross p{color:var(--text-2);font-size:15px;}
.cross-media{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--bg-1);
  border-top:1px solid var(--line);
  position:relative;
}
.cta-band::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(20,240,166,0),var(--neon),rgba(20,240,166,0));
}
.cta-inner{
  display:flex;align-items:center;gap:24px;
  flex-wrap:wrap;
  padding:34px 0;
}
.cta-inner .lead{font-size:18px;font-weight:600;}
.cta-inner .sub{font-size:13px;color:var(--text-3);}
.cta-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex-wrap:wrap;}
.copy-field{
  display:flex;align-items:center;
  height:44px;
  background:var(--bg-0);
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  overflow:hidden;
}
.copy-field input{
  width:190px;
  height:100%;
  padding:0 14px;
  background:transparent;
  border:0;
  color:var(--text-3);
  font-size:13px;
}
.copy-field input:focus{outline:none;}
.copy-field button{
  height:100%;
  padding:0 16px;
  font-size:13px;
  color:var(--neon);
  border-left:1px solid var(--line);
}
.copy-field button:hover{background:var(--neon-dim);}

/* ---------- FAQ ---------- */
.faq{max-width:880px;margin:26px auto 0;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--surface);}
.faq details{border-bottom:1px solid var(--line-soft);}
.faq details:last-child{border-bottom:0;}
.faq summary{
  list-style:none;
  cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;
  min-height:56px;
  font-size:16px;font-weight:600;
  color:var(--text-1);
  transition:background .18s ease-out;
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary:hover{background:var(--surface-2);}
.faq summary .arrow{
  flex:0 0 auto;
  transition:transform .18s ease-out;
  color:var(--text-3);
}
.faq details[open] summary .arrow{transform:rotate(180deg);color:var(--neon);}
.faq .answer{
  position:relative;
  padding:0 22px 20px 22px;
  font-size:14px;line-height:1.75;
  color:var(--text-2);
}
.faq .answer::before{
  content:"";
  position:absolute;left:0;top:2px;bottom:22px;
  width:2px;background:var(--neon);
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#070A11;
  border-top:1px solid var(--line);
  position:relative;
  padding:56px 0 26px;
}
.site-footer::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(20,240,166,0),var(--neon),rgba(20,240,166,0));
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:32px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand strong{font-size:16px;}
.footer-intro{font-size:14px;color:var(--text-2);max-width:340px;line-height:1.75;}
.footer-col h3{
  font-size:13px;letter-spacing:.08em;
  color:var(--text-3);
  margin-bottom:14px;font-weight:600;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--neon);}
.footer-bottom{
  margin-top:40px;padding-top:20px;
  border-top:1px solid var(--line-soft);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .main-nav{margin-left:0;}
  .nav-link{padding:22px 10px;font-size:14px;}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions{gap:10px;}
  .toc-grid{grid-template-columns:repeat(2,1fr);}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .param-grid{grid-template-columns:1fr;}
  .rowcard{grid-template-columns:220px 1fr;}
  .cross{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .section{padding:56px 0;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .site-header{position:sticky;}
  .hero-inner{padding:52px 0 46px;}
  .page-hero h1{font-size:28px;line-height:1.35;}
  .hero-lead{font-size:15px;}
  .hero-facts{gap:22px;}
  .fact b{font-size:20px;}
  .toc-grid{grid-template-columns:1fr;}
  .rowcard{grid-template-columns:1fr;}
  .rowcard__media{min-height:180px;}
  .rank-row{grid-template-columns:48px 1fr 1fr;padding:14px 16px;font-size:13px;}
  .rank-row .col-lg{display:none;}
  .cta-actions{margin-left:0;width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .copy-field{width:100%;}
  .copy-field input{width:100%;flex:1;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .btn{cursor:pointer;}
}
@media (max-width:479px){
  .page-hero h1{font-size:26px;}
  .section-head h2{font-size:22px;}
  .cross{padding:22px;}
  .header-actions .btn-primary{display:none;}
  .stat-grid{grid-template-columns:1fr;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}