/* roulang page: index */
:root{
  --bg:#070B18;
  --panel:#0E1526;
  --raised:#131C31;
  --primary:#2BE3C6;
  --secondary:#8B5CF6;
  --accent:#FFB020;
  --text:#E8EEF7;
  --text-2:#9AA7BD;
  --text-3:#6B7688;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.06);
  --glass:rgba(255,255,255,.04);
  --r-lg:16px;
  --r-md:14px;
  --r-sm:12px;
  --r-pill:999px;
  --shadow:0 20px 60px rgba(0,0,0,.45);
  --shadow-hover:0 0 0 1px rgba(43,227,198,.3),0 8px 30px rgba(43,227,198,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1200px;
}
*,*::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","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
time,strong,.num{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(43,227,198,.28)}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px}
.section-head h2{font-size:28px}
.section-head p{margin-top:10px;color:var(--text-2);font-size:15px;max-width:560px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--primary);font-weight:600;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--primary);display:block}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,24,0);
  transition:background .2s var(--ease),border-color .2s var(--ease),backdrop-filter .2s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(7,11,24,.78);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line-2);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  color:#04121A;font-size:13px;font-weight:700;letter-spacing:.02em;
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em}
.brand-text em{font-style:normal;font-weight:400;color:var(--text-2);font-size:14px;margin-left:2px}
.main-nav{display:flex;align-items:center;gap:24px}
.nav-link{
  position:relative;font-size:15px;color:var(--text-2);
  padding:6px 0;transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--primary);
  transition:width .2s var(--ease);
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--text);font-weight:600}
.nav-link.is-active::after{width:18px;background:var(--primary)}
.nav-actions{display:flex;align-items:center;gap:14px}
.icon-btn{
  width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--text-2);
  transition:all .18s var(--ease);
}
.icon-btn:hover{color:var(--primary);border-color:rgba(43,227,198,.45)}
.hamburger{display:none}
.search-bar{
  border-top:1px solid var(--line-2);
  background:rgba(7,11,24,.9);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.search-bar[hidden]{display:none}
.search-form{display:flex;gap:12px;padding:16px 0}
.search-form input{
  flex:1;min-width:0;height:46px;padding:0 16px;border-radius:var(--r-sm);
  background:var(--glass);border:1px solid var(--line);color:var(--text);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.search-form input::placeholder{color:var(--text-3)}
.search-form input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(43,227,198,.16)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;border-radius:var(--r-pill);
  padding:13px 26px;white-space:nowrap;
  transition:transform .18s var(--ease),filter .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 100%);
  color:#04121A;
  box-shadow:0 0 0 1px rgba(43,227,198,.35),0 8px 26px rgba(43,227,198,.22);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(43,227,198,.5),0 12px 34px rgba(43,227,198,.3)}
.btn-primary:active{transform:translateY(0);filter:brightness(.98);box-shadow:0 0 0 1px rgba(43,227,198,.3),0 4px 14px rgba(43,227,198,.18)}
.btn-ghost{
  background:var(--glass);border:1px solid var(--line);color:var(--text);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.btn-ghost:hover{border-color:rgba(43,227,198,.5);color:var(--primary);transform:translateY(-1px)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}
.btn[disabled]{opacity:.4;cursor:not-allowed;box-shadow:none;filter:none}
.text-link{
  position:relative;font-size:14px;font-weight:600;color:var(--text-2);
  transition:color .18s var(--ease);
}
.text-link::after{
  content:"";position:absolute;left:0;bottom:-4px;width:0;height:1px;background:var(--primary);
  transition:width .2s var(--ease);
}
.text-link:hover{color:var(--primary)}
.text-link:hover::after{width:100%}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:1;padding:6px 10px;border-radius:var(--r-pill);
  border:1px solid var(--line);color:var(--text-2);background:rgba(7,11,24,.55);
}
.badge-time{color:var(--accent);border-color:rgba(255,176,32,.35);background:rgba(7,11,24,.6)}
.badge-cat{color:var(--primary);border-color:rgba(43,227,198,.3)}
.badge-soft{background:var(--glass);color:var(--text-2)}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:64px 0 88px}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  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:24px 24px;
  -webkit-mask-image:radial-gradient(120% 88% at 50% 0%,#000 28%,transparent 84%);
  mask-image:radial-gradient(120% 88% at 50% 0%,#000 28%,transparent 84%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(560px 380px at 16% 10%,rgba(43,227,198,.12),transparent 70%),
             radial-gradient(520px 360px at 88% 28%,rgba(139,92,246,.08),transparent 72%);
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-title{
  font-size:40px;line-height:1.25;margin:18px 0 0;
  font-weight:700;letter-spacing:-.01em;
  background:linear-gradient(180deg,#FFFFFF 20%,#C7D6E8 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{margin-top:18px;font-size:17px;color:var(--text-2);max-width:460px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-tags{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:30px}
.hero-tags li{position:relative;font-size:13px;color:var(--text-3);padding-right:14px}
.hero-tags li:not(:last-child)::after{
  content:"";position:absolute;right:0;top:50%;transform:translateY(-50%);
  width:1px;height:12px;background:var(--line);
}
.hero-visual{
  position:relative;justify-self:end;width:100%;max-width:340px;
  aspect-ratio:9/16;border-radius:20px;overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow);
  background:var(--panel);
}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(7,11,24,.1) 0%,rgba(7,11,24,.35) 55%,rgba(7,11,24,.72) 100%);
  box-shadow:inset 0 -90px 90px -40px rgba(43,227,198,.4);
}
.play-ring{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:68px;height:68px;border-radius:50%;z-index:2;
  display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.45);
  background:rgba(7,11,24,.32);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  transition:transform .22s var(--ease);
}
.hero-visual:hover .play-ring{transform:translate(-50%,-50%) scale(1.04)}

/* ---------- stats ---------- */
.stats{border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:34px 24px 34px 0;border-right:1px solid var(--line-2)}
.stat:last-child{border-right:0}
.stat strong{display:block;font-size:30px;font-weight:600;color:var(--text);letter-spacing:-.01em}
.stat span{display:block;margin-top:6px;font-size:13px;color:var(--text-3)}

/* ---------- rails ---------- */
.rail{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 32px 20px;scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none}
.rail-wrap{padding:0}
.rail-bleed{max-width:var(--container);margin:0 auto;padding-left:32px;padding-right:0}
.rail-bleed .rail{padding-left:0;padding-right:32px}

/* ---------- clip cards ---------- */
.clip-card{
  flex:0 0 240px;scroll-snap-align:start;
  display:flex;flex-direction:column;gap:12px;
  transition:transform .2s var(--ease);
}
.clip-media{
  position:relative;aspect-ratio:9/16;border-radius:var(--r-md);overflow:hidden;
  border:1px solid var(--line);background:var(--panel);box-shadow:var(--shadow);
}
.clip-media img{width:100%;height:100%;object-fit:cover;transition:transform .25s var(--ease)}
.clip-media .badge-time{position:absolute;left:10px;bottom:10px}
.clip-media .badge-cat{position:absolute;right:10px;top:10px}
.clip-card:hover{transform:translateY(-2px)}
.clip-card:hover .clip-media{border-color:rgba(43,227,198,.5);box-shadow:var(--shadow-hover)}
.clip-card:hover .clip-media img{transform:scale(1.03)}
.clip-title{
  font-size:15px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.clip-meta{font-size:12px;color:var(--text-3)}

/* ---------- numbered list ---------- */
.pick-list{border-top:1px solid var(--line-2)}
.pick-row{
  display:grid;grid-template-columns:64px 1fr auto;align-items:center;gap:20px;
  min-height:88px;padding:14px 18px;border-bottom:1px solid var(--line-2);
  transition:background .2s var(--ease);
}
.pick-row:hover{background:rgba(255,255,255,.03)}
.pick-num{
  font-size:11px;letter-spacing:.22em;color:var(--text-3);font-weight:600;
  transition:color .2s var(--ease);
}
.pick-row:hover .pick-num{color:var(--primary)}
.pick-title{font-size:17px;font-weight:600}
.pick-desc{margin-top:4px;font-size:14px;color:var(--text-2)}
.pick-arrow{color:var(--text-3);transition:transform .2s var(--ease),color .2s var(--ease)}
.pick-row:hover .pick-arrow{transform:translateX(4px);color:var(--primary)}

/* ---------- voices ---------- */
.voice-card{
  position:relative;flex:0 0 320px;scroll-snap-align:start;
  padding:28px 24px 24px;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.voice-card::before{
  content:"“";position:absolute;left:22px;top:8px;
  font-size:44px;line-height:1;color:rgba(43,227,198,.35);
  font-family:Georgia,serif;
}
.voice-text{margin-top:14px;font-size:15px;color:var(--text);line-height:1.8}
.voice-line{width:36px;height:4px;border-radius:2px;background:var(--primary);margin:20px 0 14px}
.voice-meta{font-size:13px;color:var(--text-2)}
.voice-meta span{color:var(--text-3);margin-left:8px;font-size:12px}

/* ---------- direct bar ---------- */
.direct-bar{position:relative;z-index:20}
.direct-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:26px 30px;border-radius:var(--r-lg);
  background:rgba(255,255,255,.045);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
}
.direct-inner::before{
  content:"";position:absolute;left:24px;right:24px;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.28),transparent);
}
.direct-copy strong{display:block;font-size:18px;font-weight:600}
.direct-copy span{display:block;margin-top:6px;font-size:14px;color:var(--text-2)}

/* ---------- posts (cms) ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.post-card{
  display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--r-lg);border:1px solid var(--line);
  background:var(--panel);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.post-card:hover{transform:translateY(-2px);border-color:rgba(43,227,198,.45);box-shadow:var(--shadow-hover)}
.post-thumb{
  height:164px;background-color:var(--raised);
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line-2);
}
.post-card:nth-child(6n+1) .post-thumb{background-image:url('/assets/images/coverpic/cover-1.png')}
.post-card:nth-child(6n+2) .post-thumb{background-image:url('/assets/images/coverpic/cover-3.webp')}
.post-card:nth-child(6n+3) .post-thumb{background-image:url('/assets/images/coverpic/cover-5.png')}
.post-card:nth-child(6n+4) .post-thumb{background-image:url('/assets/images/coverpic/cover-6.png')}
.post-card:nth-child(6n+5) .post-thumb{background-image:url('/assets/images/coverpic/cover-7.png')}
.post-card:nth-child(6n+6) .post-thumb{background-image:url('/assets/images/coverpic/cover-8.png')}
.post-body{display:flex;flex-direction:column;gap:10px;padding:20px}
.post-title{
  font-size:16px;font-weight:600;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-summary{
  font-size:14px;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:8px;font-size:12px;color:var(--text-3);
}
.post-more{color:var(--text-2);font-weight:600}
.post-card:hover .post-more{color:var(--primary)}
.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-lg);
  color:var(--text-2);text-align:center;
}
.empty-state svg{color:var(--text-3)}
.empty-state a{color:var(--primary);font-weight:600;font-size:14px}
.list-foot{display:flex;justify-content:center;margin-top:36px}

/* ---------- faq ---------- */
.faq{max-width:820px;margin:0 auto;border-top:1px solid var(--line-2)}
.faq-item{border-bottom:1px solid var(--line-2)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;text-align:left;font-size:17px;font-weight:500;color:var(--text);
  transition:color .18s var(--ease);
}
.faq-q:hover{color:var(--primary)}
.faq-icon{
  position:relative;flex:0 0 18px;width:18px;height:18px;
  transition:transform .22s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:1px;
}
.faq-icon::before{left:0;top:8px;width:18px;height:1.5px}
.faq-icon::after{left:8px;top:0;width:1.5px;height:18px}
.faq-item.is-open .faq-icon{transform:rotate(90deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s var(--ease)}
.faq-a p{padding:0 40px 24px 4px;font-size:15px;color:var(--text-2);line-height:1.85}

/* ---------- subscribe ---------- */
.subscribe{
  border-radius:var(--r-lg);border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  padding:44px;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;
  box-shadow:var(--shadow);
}
.subscribe h2{font-size:26px}
.subscribe p{margin-top:12px;font-size:15px;color:var(--text-2)}
.sub-form{display:flex;gap:12px}
.sub-form input{
  flex:1;min-width:0;height:48px;padding:0 16px;border-radius:var(--r-sm);
  background:rgba(7,11,24,.5);border:1px solid var(--line);color:var(--text);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.sub-form input::placeholder{color:var(--text-3)}
.sub-form input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(43,227,198,.16)}
.sub-form input.is-error{border-color:var(--accent);box-shadow:0 0 0 3px rgba(255,176,32,.14)}
.form-note{margin-top:12px;font-size:13px;color:var(--text-3);min-height:20px}
.form-note.is-error{color:var(--accent)}
.form-note.is-ok{color:var(--primary)}

/* ---------- footer ---------- */
.site-footer{
  margin-top:96px;background:#050812;border-top:1px solid var(--line-2);
  padding:72px 0 32px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand-text{font-size:18px}
.footer-desc{margin-top:16px;font-size:14px;color:var(--text-2);max-width:320px}
.footer-col h3{font-size:14px;font-weight:600;letter-spacing:.02em;margin-bottom:18px}
.footer-col li{margin-bottom:12px}
.footer-col a{font-size:14px;color:var(--text-2);transition:color .18s var(--ease)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid var(--line-2);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:12px;color:var(--text-3);
}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;
  background:rgba(7,11,24,.97);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  display:flex;flex-direction:column;
  padding:24px 20px calc(24px + env(safe-area-inset-bottom));
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
}
.drawer.is-open{opacity:1;visibility:visible;transform:none}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}
.drawer-nav{display:flex;flex-direction:column;flex:1}
.drawer-nav a{
  font-size:22px;font-weight:600;padding:20px 4px;
  border-bottom:1px solid var(--line-2);
  transition:color .18s var(--ease);
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--primary)}
.drawer-foot{margin-top:24px}

@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  html{scroll-behavior:auto}
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .container{padding:0 32px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .section-tight{padding:56px 0}
  .hero{padding:48px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-visual{justify-self:center;max-width:300px}
  .hero-title{font-size:34px}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .subscribe{grid-template-columns:1fr;gap:28px;padding:36px}
  .rail-bleed{padding-left:24px}
  .rail-bleed .rail{padding-right:24px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .nav-wrap{height:64px}
  .main-nav{display:none}
  .nav-actions .btn{display:none}
  .nav-actions .icon-btn{display:none}
  .hamburger{display:grid;width:40px;height:40px;border-radius:50%;place-items:center;border:1px solid var(--line)}
  .hamburger:hover{border-color:rgba(43,227,198,.45);color:var(--primary)}
  .hero-title{font-size:32px}
  .hero-sub{font-size:16px}
  .hero-actions .btn{flex:1}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:28px}
  .section-head h2{font-size:24px}
  .stats-grid{grid-template-columns:1fr 1fr}
  .stat{padding:24px 16px;border-right:0;border-bottom:1px solid var(--line-2)}
  .stat:nth-child(odd){border-right:1px solid var(--line-2)}
  .stat:nth-child(3),.stat:nth-child(4){border-bottom:0}
  .stat strong{font-size:24px}
  .rail{padding:6px 16px 18px;gap:16px}
  .rail-bleed{padding-left:16px}
  .rail-bleed .rail{padding-right:16px}
  .clip-card{flex:0 0 168px}
  .voice-card{flex:0 0 280px}
  .pick-row{grid-template-columns:44px 1fr auto;gap:12px;padding:14px 6px}
  .pick-title{font-size:16px}
  .post-grid{grid-template-columns:1fr}
  .direct-bar{position:sticky;bottom:0;z-index:40;padding-top:8px}
  .direct-inner{
    flex-direction:column;align-items:stretch;text-align:left;
    border-radius:16px 16px 0 0;border-bottom:0;
    padding:20px 18px calc(18px + env(safe-area-inset-bottom));
    background:rgba(14,21,38,.96);
  }
  .faq-q{font-size:16px;padding:18px 4px}
  .faq-a p{padding-right:16px}
  .subscribe{padding:28px 20px}
  .sub-form{flex-direction:column}
  .sub-form .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .hero-title{font-size:28px}
  .clip-card{flex:0 0 100%}
  .voice-card{flex:0 0 86%}
  .post-thumb{height:180px}
}

/* roulang page: article */
:root{
  --bg:#070B18;
  --panel:#0E1526;
  --panel-2:#131C31;
  --primary:#2BE3C6;
  --violet:#8B5CF6;
  --amber:#FFB020;
  --text:#E8EEF7;
  --text-2:#9AA7BD;
  --text-3:#6B7688;
  --line:rgba(255,255,255,.08);
  --divider:rgba(255,255,255,.06);
  --glass:rgba(255,255,255,.04);
  --glass-strong:rgba(255,255,255,.07);
  --r-lg:16px;
  --r-md:14px;
  --r-pill:999px;
  --shadow:0 20px 60px rgba(0,0,0,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1200px;
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(680px 420px at 12% -6%,rgba(43,227,198,.12),transparent 62%),
    radial-gradient(620px 400px at 92% 8%,rgba(139,92,246,.08),transparent 60%),
    linear-gradient(transparent 23px,rgba(255,255,255,.022) 24px),
    linear-gradient(90deg,transparent 23px,rgba(255,255,255,.022) 24px);
  background-size:auto,auto,24px 24px,24px 24px;
}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.25;letter-spacing:-.01em;color:var(--text)}
p{margin:0}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease)}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;position:relative;z-index:1}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-pill);
  font-size:14.5px;font-weight:500;letter-spacing:.01em;white-space:nowrap;
  transition:transform .18s var(--ease),box-shadow .22s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),filter .2s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary) 0%,var(--violet) 135%);
  color:#04121A;font-weight:600;
  box-shadow:0 0 0 1px rgba(43,227,198,.35),0 10px 30px rgba(43,227,198,.22);
}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.08);box-shadow:0 0 0 1px rgba(43,227,198,.55),0 14px 40px rgba(43,227,198,.34)}
.btn-primary:active{transform:translateY(1px);filter:brightness(.96);box-shadow:0 0 0 1px rgba(43,227,198,.3),0 6px 18px rgba(43,227,198,.2)}
.btn-ghost{background:var(--glass);border:1px solid var(--line);color:var(--text);backdrop-filter:blur(14px)}
.btn-ghost:hover{border-color:rgba(43,227,198,.5);transform:translateY(-1px);background:rgba(43,227,198,.07)}
.btn-sm{height:38px;padding:0 18px;font-size:13.5px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none}
.text-link{position:relative;color:var(--text-2);font-size:14px}
.text-link::after{content:"";position:absolute;left:0;bottom:-3px;width:0;height:1px;background:var(--primary);transition:width .2s var(--ease)}
.text-link:hover{color:var(--text)}
.text-link:hover::after{width:100%}
.icon-btn{
  width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--line);background:var(--glass);color:var(--text-2);
  transition:color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.icon-btn:hover{color:var(--primary);border-color:rgba(43,227,198,.45)}
.icon-btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,24,.72);
  backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .22s var(--ease),border-color .22s var(--ease);
}
.site-header.is-scrolled{background:rgba(7,11,24,.88);border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;gap:26px;height:var(--header-h)}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  font-size:12.5px;font-weight:700;letter-spacing:.04em;color:#05211C;
  background:linear-gradient(135deg,var(--primary),var(--violet));
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.brand-text em{font-style:normal;font-weight:400;color:var(--text-2);font-size:12.5px;margin-left:3px}
.main-nav{display:flex;align-items:center;gap:20px}
.nav-link{position:relative;font-size:14.5px;color:var(--text-2);padding:6px 0;white-space:nowrap}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:-4px;width:18px;height:2px;border-radius:2px;
  background:var(--primary);transform:translateX(-50%) scaleX(0);transform-origin:center;
  transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--text)}
.nav-link.is-active{color:var(--text)}
.nav-link.is-active::after{transform:translateX(-50%) scaleX(1)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.menu-toggle{display:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:var(--glass);place-items:center}
.menu-toggle span{display:block;width:16px;height:1.6px;border-radius:2px;background:var(--text);margin:3px auto;transition:transform .2s var(--ease)}

/* ---------- drawer ---------- */
.nav-drawer{
  position:fixed;inset:0;z-index:90;background:rgba(7,11,24,.97);
  backdrop-filter:blur(18px);padding:22px 20px calc(22px + env(safe-area-inset-bottom));
  display:flex;flex-direction:column;gap:26px;
  transform:translateY(-12px);opacity:0;visibility:hidden;
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s var(--ease);
}
.nav-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between}
.drawer-title{font-size:13px;letter-spacing:.08em;color:var(--text-3)}
.drawer-nav{display:flex;flex-direction:column;flex:1}
.drawer-link{
  font-size:22px;font-weight:600;color:var(--text-2);
  padding:18px 0;border-bottom:1px solid var(--divider);
}
.drawer-link:hover,.drawer-link.is-active{color:var(--primary)}

/* ---------- article hero ---------- */
.article-hero{
  position:relative;
  padding:34px 0 44px;
  background:
    linear-gradient(180deg,rgba(7,11,24,.78) 0%,rgba(7,11,24,.94) 62%,var(--bg) 100%),
    url(/assets/images/backpic/back-1.png) center/cover no-repeat;
  border-bottom:1px solid var(--divider);
}
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--text-3);margin-bottom:18px}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:rgba(255,255,255,.2)}
.breadcrumb .current{color:var(--text-2);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head{max-width:820px}
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.08em;color:var(--primary);
  background:rgba(43,227,198,.1);border:1px solid rgba(43,227,198,.32);
}
.chip-amber{color:var(--amber);background:rgba(255,176,32,.1);border-color:rgba(255,176,32,.3)}
.article-title{
  font-size:clamp(28px,4.1vw,40px);font-weight:700;line-height:1.28;letter-spacing:-.01em;
  margin:16px 0 18px;max-width:20em;
}
.meta-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13px;color:var(--text-3)}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.22);display:inline-block}
.meta-row span{font-variant-numeric:tabular-nums}

/* ---------- article layout ---------- */
.article-main{padding:56px 0 72px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 288px;gap:48px;align-items:start}
.article-core{min-width:0;max-width:760px}
.article-body{font-size:16px;line-height:1.85;color:#DCE5F2}
.article-body > * + *{margin-top:1.2em}
.article-body p{margin:0}
.article-body h2{
  font-size:clamp(22px,2.4vw,26px);font-weight:700;margin:44px 0 16px;line-height:1.35;
}
.article-body h2::before{
  content:"";display:block;width:20px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--violet));margin-bottom:12px;
}
.article-body h3{font-size:19px;font-weight:600;margin:32px 0 10px;color:#EAF1FB}
.article-body h4{font-size:16.5px;font-weight:600;margin:24px 0 8px;color:#EAF1FB}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(43,227,198,.35)}
.article-body a:hover{border-bottom-color:var(--primary)}
.article-body strong{color:#F3F7FC;font-weight:600}
.article-body ul,.article-body ol{margin:1.1em 0;padding-left:0}
.article-body ul > li,.article-body ol > li{position:relative;padding-left:22px;margin:.5em 0;color:#D3DDEB}
.article-body ul > li::before{
  content:"";position:absolute;left:2px;top:.82em;width:6px;height:6px;border-radius:2px;
  background:rgba(43,227,198,.85);
}
.article-body ol{counter-reset:cmsol}
.article-body ol > li::before{
  content:counter(cmsol,decimal-leading-zero);counter-increment:cmsol;
  position:absolute;left:0;top:0;font-size:12px;color:var(--primary);
  letter-spacing:.06em;font-variant-numeric:tabular-nums;
}
.article-body ol > li{padding-left:34px}
.article-body blockquote{
  margin:1.5em 0;padding:16px 20px;
  border-left:3px solid var(--primary);
  background:var(--glass);
  backdrop-filter:blur(14px);
  border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--text-2);
}
.article-body blockquote p{margin:0}
.article-body img{
  border-radius:14px;width:100%;height:auto;margin:1.4em 0 .6em;
  border:1px solid var(--line);
}
.article-body figure{margin:1.5em 0}
.article-body figcaption{font-size:12.5px;color:var(--text-3);text-align:center;margin-top:8px}
.article-body table{
  margin:1.5em 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(--divider);text-align:left;color:#D3DDEB}
.article-body th{background:rgba(255,255,255,.035);color:var(--text);font-weight:600}
.article-body tr:last-child td{border-bottom:0}
.article-body code{
  background:rgba(255,255,255,.06);padding:2px 6px;border-radius:6px;font-size:14px;color:var(--primary);
}
.article-body hr{border:0;border-top:1px solid var(--divider);margin:2em 0}

/* ---------- side ---------- */
.article-side{position:sticky;top:calc(var(--header-h) + 24px);display:flex;flex-direction:column;gap:18px}
.side-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:20px;backdrop-filter:blur(14px);box-shadow:var(--shadow);position:relative;overflow:hidden;
}
.side-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(43,227,198,.5),rgba(139,92,246,.25),transparent);
}
.side-title{font-size:13px;letter-spacing:.08em;color:var(--text-3);margin-bottom:14px}
.side-list{display:flex;flex-direction:column}
.side-item{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--divider)}
.side-item:last-child{border-bottom:0;padding-bottom:0}
.side-item .num{
  font-size:12px;color:var(--primary);letter-spacing:.06em;font-variant-numeric:tabular-nums;padding-top:2px;
}
.side-item .txt{font-size:14px;line-height:1.6;color:var(--text-2)}
.side-item:hover .txt{color:var(--text)}
.side-note{font-size:13px;color:var(--text-3);line-height:1.75;margin-top:6px}
.side-stat{display:flex;justify-content:space-between;font-size:13px;color:var(--text-3);padding:9px 0;border-bottom:1px solid var(--divider)}
.side-stat:last-child{border-bottom:0}
.side-stat b{color:var(--text);font-weight:600;font-variant-numeric:tabular-nums}

/* ---------- tags ---------- */
.tag-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:44px;padding-top:22px;border-top:1px solid var(--divider)}
.tag-row .label{font-size:13px;color:var(--text-3);letter-spacing:.06em}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);
  font-size:13px;color:var(--text-2);background:var(--glass);border:1px solid var(--line);
  transition:color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.tag:hover{color:var(--primary);border-color:rgba(43,227,198,.45);transform:translateY(-1px)}

/* ---------- empty ---------- */
.empty-state{
  text-align:center;padding:56px 24px;margin-top:8px;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);backdrop-filter:blur(14px);
}
.empty-state svg{width:40px;height:40px;stroke:var(--text-3);fill:none;stroke-width:1.5;margin:0 auto 16px}
.empty-title{font-size:18px;font-weight:600;color:var(--text)}
.empty-desc{font-size:14.5px;color:var(--text-2);margin:8px 0 20px}

/* ---------- related ---------- */
.related{margin-top:64px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px}
.section-head h2{font-size:clamp(20px,2.2vw,24px)}
.section-head .sub{font-size:13.5px;color:var(--text-3);margin-top:6px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.card{
  display:flex;flex-direction:column;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;backdrop-filter:blur(14px);box-shadow:var(--shadow);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:rgba(43,227,198,.4);box-shadow:0 0 0 1px rgba(43,227,198,.3),0 8px 30px rgba(43,227,198,.2)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--panel-2)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:16px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-desc{font-size:14px;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:auto;font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums;display:flex;align-items:center;gap:8px}
.card-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.22)}

/* ---------- cta bar ---------- */
.back-cta{
  margin-top:56px;padding:26px 28px;border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(43,227,198,.1),rgba(139,92,246,.08) 60%,rgba(255,255,255,.02));
  border:1px solid var(--line);backdrop-filter:blur(14px);
  display:flex;align-items:center;justify-content:space-between;gap:22px;flex-wrap:wrap;
}
.back-cta h2{font-size:19px;font-weight:600}
.back-cta p{font-size:14px;color:var(--text-2);margin-top:6px}

/* ---------- faq ---------- */
.faq{margin-top:64px;max-width:820px}
.faq h2{font-size:clamp(20px,2.2vw,24px);margin-bottom:18px}
.faq-item{border-bottom:1px solid var(--divider)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;font-size:16.5px;font-weight:500;color:var(--text);text-align:left;
}
.faq-q .sign{
  flex-shrink:0;width:22px;height:22px;position:relative;
  transition:transform .22s var(--ease);color:var(--primary);
}
.faq-q .sign::before,.faq-q .sign::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-q .sign::before{width:12px;height:1.6px}
.faq-q .sign::after{width:1.6px;height:12px;transition:opacity .22s var(--ease)}
.faq-item.is-open .sign::after{opacity:0}
.faq-item.is-open .sign{transform:rotate(90deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease)}
.faq-a p{font-size:14.5px;color:var(--text-2);padding:0 34px 18px 0;line-height:1.85}

/* ---------- footer ---------- */
.site-footer{
  margin-top:80px;background:#050810;border-top:1px solid var(--divider);
  padding:56px 0 28px;position:relative;z-index:1;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
.footer-brand .brand{margin-bottom:14px}
.footer-desc{font-size:13.5px;color:var(--text-3);line-height:1.85;max-width:320px}
.footer-col h3{font-size:13px;letter-spacing:.08em;color:var(--text);margin-bottom:14px;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--divider);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-3);
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .container{padding:0 32px}
}
@media (max-width:1023px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:36px}
  .article-side{position:static;flex-direction:row;flex-wrap:wrap}
  .article-side .side-card{flex:1 1 260px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:880px){
  .container{padding:0 24px}
  .main-nav{display:none}
  .header-actions .btn{display:none}
  .menu-toggle{display:grid}
  .header-inner{gap:14px}
}
@media (max-width:767px){
  :root{--header-h:64px}
  body{font-size:15px}
  .container{padding:0 16px}
  .article-hero{padding:24px 0 34px}
  .article-main{padding:36px 0 56px}
  .article-body{font-size:15px}
  .article-body h2{margin:34px 0 14px}
  .breadcrumb .current{max-width:200px}
  .article-side{flex-direction:column}
  .related-grid{grid-template-columns:minmax(0,1fr);gap:16px}
  .related{margin-top:52px}
  .back-cta{padding:22px;flex-direction:column;align-items:flex-start}
  .back-cta .btn{width:100%}
  .faq{margin-top:48px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .site-footer{margin-top:60px;padding-top:44px}
}
@media (max-width:480px){
  .article-title{font-size:28px}
  .card-body{padding:16px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
    --bg:#070B18;
    --panel:#0E1526;
    --layer:#131C31;
    --primary:#2BE3C6;
    --secondary:#8B5CF6;
    --amber:#FFB020;
    --text:#E8EEF7;
    --text-2:#9AA7BD;
    --text-3:#6B7688;
    --line:rgba(255,255,255,.08);
    --line-2:rgba(255,255,255,.06);
    --r-xl:20px;
    --r-lg:16px;
    --r-md:14px;
    --r-pill:999px;
    --shadow:0 20px 60px rgba(0,0,0,.45);
    --shadow-hover:0 0 0 1px rgba(43,227,198,.3),0 8px 30px rgba(43,227,198,.22);
    --ease:cubic-bezier(.22,.61,.36,1);
    --gap-section:96px;
  }

  *,*::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","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{display:block;max-width:100%;height:auto}
  a{color:inherit;text-decoration:none}
  button,input{font:inherit;color:inherit}
  button{background:none;border:0;cursor:pointer}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0}
  ul,ol{padding:0;list-style:none}
  em{font-style:normal}
  ::selection{background:rgba(43,227,198,.28);color:#fff}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:80;
    background:rgba(7,11,24,.72);
    border-bottom:1px solid transparent;
    transition:background .2s var(--ease),border-color .2s var(--ease),backdrop-filter .2s var(--ease);
  }
  .site-header.is-scrolled{
    background:rgba(7,11,24,.88);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    border-bottom-color:var(--line-2);
  }
  .header-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
  .brand{display:inline-flex;align-items:center;gap:12px;flex:none}
  .brand-mark{
    width:38px;height:38px;border-radius:12px;flex:none;
    display:grid;place-items:center;
    font-size:13px;font-weight:700;letter-spacing:.04em;color:#04120F;
    background:linear-gradient(135deg,var(--primary),var(--secondary));
    box-shadow:0 6px 20px rgba(43,227,198,.28);
  }
  .brand-text{font-size:17px;font-weight:600;letter-spacing:-.01em;color:var(--text)}
  .brand-text em{font-size:12px;font-weight:400;color:var(--text-3);margin-left:4px;letter-spacing:.08em}

  .main-nav{display:flex;align-items:center;gap:20px}
  .nav-link{
    position:relative;
    font-size:15px;color:var(--text-2);
    padding:6px 0;
    transition:color .18s var(--ease);
  }
  .nav-link::after{
    content:"";position:absolute;left:0;bottom:0;
    width:0;height:2px;border-radius:2px;
    background:var(--primary);
    transition:width .2s var(--ease);
  }
  .nav-link:hover{color:var(--text)}
  .nav-link:hover::after{width:100%}
  .nav-link.is-active{color:var(--text)}
  .nav-link.is-active::after{width:18px;background:var(--primary);box-shadow:0 0 10px rgba(43,227,198,.6)}

  .header-actions{display:flex;align-items:center;gap:12px}
  .icon-btn{
    width:40px;height:40px;border-radius:50%;
    display:grid;place-items:center;
    border:1px solid var(--line);
    background:rgba(255,255,255,.03);
    color:var(--text-2);
    transition:border-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
  }
  .icon-btn:hover{border-color:rgba(43,227,198,.45);color:var(--primary)}
  .icon-btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
  .icon-btn svg{width:18px;height:18px;stroke:currentColor;stroke-width:1.5;fill:none;stroke-linecap:round;stroke-linejoin:round}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 22px;border-radius:var(--r-pill);
    font-size:15px;font-weight:500;letter-spacing:.01em;
    border:1px solid transparent;white-space:nowrap;
    transition:transform .18s var(--ease),box-shadow .18s var(--ease),filter .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
  }
  .btn-sm{height:38px;padding:0 18px;font-size:14px}
  .btn-primary{
    color:#04120F;
    background:linear-gradient(135deg,var(--primary),var(--secondary));
    box-shadow:0 8px 26px rgba(43,227,198,.28);
  }
  .btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 12px 34px rgba(43,227,198,.4)}
  .btn-primary:active{transform:translateY(0);box-shadow:0 6px 16px rgba(43,227,198,.22)}
  .btn-ghost{
    background:rgba(255,255,255,.04);
    border-color:var(--line);
    color:var(--text);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
  }
  .btn-ghost:hover{border-color:rgba(43,227,198,.5);color:var(--primary);transform:translateY(-1px)}
  .btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
  .btn[disabled]{opacity:.4;cursor:not-allowed;box-shadow:none}

  .nav-toggle{display:none}

  /* ---------- drawer ---------- */
  .drawer{
    position:fixed;inset:0;z-index:120;
    background:rgba(7,11,24,.98);
    -webkit-backdrop-filter:blur(18px);
    backdrop-filter:blur(18px);
    display:flex;flex-direction:column;
    padding:20px 20px calc(28px + env(safe-area-inset-bottom));
    transform:translateY(-100%);
    opacity:0;visibility:hidden;
    transition:transform .24s var(--ease),opacity .24s var(--ease),visibility .24s var(--ease);
  }
  .drawer.is-open{transform:translateY(0);opacity:1;visibility:visible}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;height:56px}
  .drawer-title{font-size:13px;letter-spacing:.16em;color:var(--text-3)}
  .drawer-nav{margin-top:18px;display:flex;flex-direction:column}
  .drawer-nav a{
    padding:22px 2px;font-size:22px;font-weight:500;color:var(--text-2);
    border-bottom:1px solid var(--line-2);
    transition:color .18s var(--ease),padding-left .18s var(--ease);
  }
  .drawer-nav a:hover{color:var(--text)}
  .drawer-nav a.is-active{color:var(--primary);padding-left:8px}
  .drawer-cta{margin-top:auto;width:100%}

  /* ---------- page hero ---------- */
  .page-hero{
    position:relative;
    padding:56px 0 64px;
    overflow:hidden;
    background:
      radial-gradient(680px 340px at 8% 0%,rgba(43,227,198,.12),transparent 70%),
      radial-gradient(560px 320px at 92% 6%,rgba(139,92,246,.10),transparent 72%);
  }
  .page-hero::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:
      linear-gradient(rgba(255,255,255,.032) 1px,transparent 1px),
      linear-gradient(90deg,rgba(255,255,255,.032) 1px,transparent 1px);
    background-size:24px 24px;
    -webkit-mask-image:radial-gradient(680px 320px at 30% 20%,#000,transparent 78%);
    mask-image:radial-gradient(680px 320px at 30% 20%,#000,transparent 78%);
  }
  .page-hero .container{position:relative;z-index:1}
  .breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);letter-spacing:.02em}
  .breadcrumb a{color:var(--text-3);transition:color .18s var(--ease)}
  .breadcrumb a:hover{color:var(--primary)}
  .breadcrumb .sep{color:rgba(255,255,255,.18)}
  .breadcrumb .current{color:var(--text-2)}

  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    margin-top:26px;
    font-size:12px;letter-spacing:.14em;color:var(--primary);
  }
  .eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--primary);box-shadow:0 0 10px rgba(43,227,198,.7)}

  .page-title{
    margin-top:18px;
    font-size:40px;line-height:1.25;font-weight:700;letter-spacing:-.01em;
    max-width:820px;
  }
  .page-title span{color:var(--primary)}
  .page-lead{
    margin-top:20px;
    max-width:760px;
    font-size:16px;line-height:1.9;color:var(--text-2);
  }
  .chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
  .chip{
    display:inline-flex;align-items:center;height:34px;padding:0 16px;
    border-radius:var(--r-pill);
    border:1px solid var(--line);
    background:rgba(255,255,255,.03);
    font-size:13px;color:var(--text-2);letter-spacing:.02em;
    transition:border-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
  }
  .chip:hover{border-color:rgba(43,227,198,.45);color:var(--primary);transform:translateY(-1px)}
  .chip:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
  .chip i{width:5px;height:5px;border-radius:50%;background:var(--primary);margin-right:8px;box-shadow:0 0 8px rgba(43,227,198,.7)}

  /* ---------- sections ---------- */
  .section{padding:var(--gap-section) 0;position:relative}
  .section-tight{padding:64px 0}
  .section-head{max-width:760px}
  .section-head.center{margin:0 auto;text-align:center}
  .section-label{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.16em;color:var(--text-3)}
  .section-label::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px rgba(43,227,198,.7)}
  .section-title{margin-top:14px;font-size:28px;line-height:1.3;font-weight:600;letter-spacing:-.01em}
  .section-desc{margin-top:14px;font-size:15px;line-height:1.85;color:var(--text-2)}

  /* ---------- stats ---------- */
  .stat-row{
    display:grid;grid-template-columns:repeat(4,1fr);
    border-top:1px solid var(--line-2);
    border-bottom:1px solid var(--line-2);
  }
  .stat{padding:30px 26px;border-right:1px solid var(--line-2)}
  .stat:last-child{border-right:0}
  .stat-num{
    font-size:28px;font-weight:600;letter-spacing:-.01em;color:var(--primary);
    font-variant-numeric:tabular-nums;
    text-shadow:0 0 20px rgba(43,227,198,.35);
  }
  .stat-num small{font-size:14px;font-weight:500;margin-left:4px;color:var(--text-2);text-shadow:none}
  .stat-label{margin-top:8px;font-size:13px;letter-spacing:.08em;color:var(--text-3)}

  /* ---------- split ---------- */
  .split{
    display:grid;grid-template-columns:1.05fr .95fr;
    gap:56px;align-items:center;
  }
  .split.is-reverse .split-media{order:-1}
  .split-body .tag{
    display:inline-flex;align-items:center;height:26px;padding:0 12px;
    border-radius:var(--r-pill);border:1px solid rgba(255,176,32,.35);
    color:var(--amber);font-size:12px;letter-spacing:.08em;background:rgba(255,176,32,.06);
  }
  .split-body h3{margin-top:18px;font-size:24px;line-height:1.35;font-weight:600;letter-spacing:-.01em}
  .split-body p{margin-top:16px;font-size:15px;line-height:1.9;color:var(--text-2)}
  .feature-list{margin-top:26px;border-top:1px solid var(--line-2)}
  .feature-list li{
    display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line-2);
    font-size:15px;color:var(--text-2);line-height:1.8;
  }
  .feature-list li b{color:var(--text);font-weight:600;flex:none}
  .feature-list li::before{
    content:"";flex:none;width:8px;height:8px;margin-top:10px;
    border-radius:2px;background:var(--primary);opacity:.85;
  }
  .media-frame{
    position:relative;border-radius:var(--r-xl);overflow:hidden;
    border:1px solid var(--line);
    box-shadow:var(--shadow);
  }
  .media-frame img{width:100%;height:100%;object-fit:cover}
  .media-frame::after{
    content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
    box-shadow:inset 0 -70px 70px -46px rgba(43,227,198,.35),inset 0 0 0 1px rgba(255,255,255,.05);
  }
  .frame-portrait{aspect-ratio:9/16;max-width:360px;margin:0 auto}
  .frame-wide{aspect-ratio:16/9}

  /* ---------- numbered list ---------- */
  .num-list{border-top:1px solid var(--line-2);margin-top:44px}
  .num-item{
    display:grid;grid-template-columns:72px 1fr 32px;align-items:center;gap:20px;
    min-height:88px;padding:16px 10px;
    border-bottom:1px solid var(--line-2);
    transition:background .18s var(--ease);
  }
  .num-item:hover{background:rgba(255,255,255,.032)}
  .num-index{
    font-size:11px;letter-spacing:.2em;color:var(--text-3);
    font-variant-numeric:tabular-nums;transition:color .18s var(--ease);
  }
  .num-item:hover .num-index{color:var(--primary)}
  .num-title{font-size:17px;font-weight:500;letter-spacing:-.005em}
  .num-desc{font-size:14px;color:var(--text-3);margin-top:4px}
  .num-arrow{
    display:grid;place-items:center;color:var(--text-3);
    transition:transform .18s var(--ease),color .18s var(--ease);
  }
  .num-item:hover .num-arrow{transform:translateX(4px);color:var(--primary)}
  .num-arrow svg{width:18px;height:18px;stroke:currentColor;stroke-width:1.5;fill:none;stroke-linecap:round;stroke-linejoin:round}

  .tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px}
  .tag-item{
    display:inline-flex;align-items:center;height:32px;padding:0 14px;
    border-radius:var(--r-pill);border:1px solid var(--line);
    font-size:13px;color:var(--text-2);
    transition:border-color .18s var(--ease),color .18s var(--ease);
  }
  .tag-item:hover{border-color:rgba(43,227,198,.4);color:var(--primary)}

  /* ---------- panel / glass ---------- */
  .glass{
    position:relative;border-radius:var(--r-lg);
    background:rgba(255,255,255,.04);
    border:1px solid var(--line);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    overflow:hidden;
  }
  .glass::before{
    content:"";position:absolute;left:0;right:0;top:0;height:1px;
    background:linear-gradient(90deg,transparent,rgba(255,255,255,.28),transparent);
  }
  .note-card{padding:32px;display:grid;gap:14px}
  .note-card h3{font-size:20px;font-weight:600}
  .note-card p{font-size:15px;color:var(--text-2)}
  .note-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:40px}
  .mini{padding:24px;border-radius:var(--r-md);border:1px solid var(--line);background:rgba(255,255,255,.025)}
  .mini h4{font-size:16px;font-weight:600}
  .mini p{margin-top:10px;font-size:14px;color:var(--text-3);line-height:1.8}

  /* ---------- FAQ ---------- */
  .faq{max-width:820px;margin:44px auto 0}
  .faq-item{border-bottom:1px solid var(--line-2)}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:22px 0;text-align:left;
    font-size:17px;font-weight:500;color:var(--text);
    transition:color .18s var(--ease);
  }
  .faq-q:hover{color:var(--primary)}
  .faq-q:focus-visible{outline:2px solid var(--primary);outline-offset:4px;border-radius:6px}
  .faq-icon{position:relative;width:20px;height:20px;flex:none;transition:transform .22s var(--ease)}
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;
    transform:translate(-50%,-50%);
  }
  .faq-icon::before{width:14px;height:1.5px}
  .faq-icon::after{width:1.5px;height:14px;transition:transform .22s var(--ease)}
  .faq-item.is-open .faq-icon{transform:rotate(90deg);color:var(--primary)}
  .faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
  .faq-a p{padding:0 40px 22px 0;font-size:15px;line-height:1.85;color:var(--text-2)}

  /* ---------- CTA ---------- */
  .cta-band{
    position:relative;overflow:hidden;
    border-radius:var(--r-lg);
    border:1px solid var(--line);
    background-color:var(--panel);
    background-image:linear-gradient(90deg,rgba(7,11,24,.94),rgba(7,11,24,.72)),url(/assets/images/backpic/back-3.png);
    background-size:cover;
    background-position:center;
    padding:40px;
    display:flex;align-items:center;justify-content:space-between;gap:32px;
  }
  .cta-band h3{font-size:24px;font-weight:600;letter-spacing:-.01em}
  .cta-band p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:560px}
  .cta-actions{display:flex;gap:12px;flex:none}

  /* ---------- footer ---------- */
  .site-footer{
    background:#050813;
    border-top:1px solid var(--line-2);
    padding:64px 0 28px;
    margin-top:96px;
  }
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
  .footer-brand .brand{margin-bottom:16px}
  .footer-desc{font-size:14px;color:var(--text-3);line-height:1.85;max-width:300px}
  .footer-col h3{font-size:13px;letter-spacing:.14em;color:var(--text-2);font-weight:500;margin-bottom:18px}
  .footer-col ul{display:grid;gap:12px}
  .footer-col a{font-size:14px;color:var(--text-3);transition:color .18s var(--ease),padding-left .18s var(--ease)}
  .footer-col a:hover{color:var(--primary);padding-left:4px}
  .footer-bottom{
    margin-top:48px;padding-top:22px;
    border-top:1px solid var(--line-2);
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-size:13px;color:var(--text-3);
  }

  /* ---------- responsive ---------- */
  @media (max-width:1024px){
    :root{--gap-section:72px}
    .container{padding:0 24px}
    .main-nav{gap:16px}
    .split{gap:40px}
    .note-grid{grid-template-columns:1fr 1fr}
  }
  @media (max-width:900px){
    .main-nav,.header-actions .btn,.header-actions .icon-btn{display:none}
    .nav-toggle{
      display:grid;place-items:center;width:40px;height:40px;border-radius:50%;
      border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--text);
    }
    .nav-toggle svg{width:20px;height:20px;stroke:currentColor;stroke-width:1.5;fill:none;stroke-linecap:round}
    .nav-toggle:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
    .split{grid-template-columns:1fr;gap:32px}
    .split.is-reverse .split-media{order:2}
    .split-media{order:2}
    .frame-portrait{max-width:300px}
    .stat-row{grid-template-columns:1fr 1fr}
    .stat:nth-child(2n){border-right:0}
    .stat:nth-child(-n+2){border-bottom:1px solid var(--line-2)}
    .cta-band{flex-direction:column;align-items:flex-start;padding:32px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  }
  @media (max-width:768px){
    :root{--gap-section:56px}
    body{font-size:15px}
    .header-inner{height:64px}
    .page-hero{padding:36px 0 48px}
    .page-title{font-size:32px}
    .section-title{font-size:24px}
    .split-body h3{font-size:21px}
    .note-grid{grid-template-columns:1fr}
    .num-item{grid-template-columns:52px 1fr 24px;gap:12px;min-height:76px}
    .num-title{font-size:16px}
    .num-desc{font-size:13px}
    .faq-q{font-size:16px}
    .faq-a p{padding-right:8px}
    .cta-band h3{font-size:21px}
    .cta-actions{width:100%;flex-direction:column}
    .cta-actions .btn{width:100%}
    .site-footer{padding:48px 0 24px;margin-top:72px}
    .footer-grid{grid-template-columns:1fr;gap:28px}
    .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  }
  @media (max-width:520px){
    .container{padding:0 16px}
    .page-title{font-size:28px}
    .stat-row{grid-template-columns:1fr}
    .stat{border-right:0;border-bottom:1px solid var(--line-2);padding:22px 8px}
    .stat:last-child{border-bottom:0}
    .media-frame{border-radius:var(--r-lg)}
    .glass{border-radius:var(--r-md)}
    .note-card{padding:24px}
    .num-list{margin-top:30px}
  }
  @media (prefers-reduced-motion:reduce){
    *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  }

/* roulang page: category2 */
:root{
  --bg:#070B18;
  --panel:#0E1526;
  --panel-2:#131C31;
  --primary:#2BE3C6;
  --primary-dim:rgba(43,227,198,.14);
  --accent:#8B5CF6;
  --accent-dim:rgba(139,92,246,.16);
  --warm:#FFB020;
  --text:#E8EEF7;
  --muted:#9AA7BD;
  --dim:#6B7688;
  --line:rgba(255,255,255,.08);
  --split:rgba(255,255,255,.06);
  --r-lg:16px;
  --r-md:14px;
  --r-sm:12px;
  --shadow:0 20px 60px rgba(0,0,0,.45);
  --shadow-hover:0 0 0 1px rgba(43,227,198,.3),0 8px 30px rgba(43,227,198,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1200px;
}

*,*::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","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease),opacity .18s var(--ease);}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.25;letter-spacing:-.01em;}
p{margin:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(43,227,198,.28);}

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

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:999px;
  padding:13px 26px;
  font-size:15px;
  font-weight:500;
  line-height:1.2;
  white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{
  color:#04241F;
  background:linear-gradient(135deg,#2BE3C6 0%,#8B5CF6 135%);
  box-shadow:0 8px 26px rgba(43,227,198,.28);
}
.btn-primary:hover{
  transform:translateY(-1px);
  filter:brightness(1.08);
  box-shadow:0 0 0 1px rgba(43,227,198,.35),0 10px 34px rgba(43,227,198,.34);
}
.btn-primary:active{transform:translateY(0);filter:brightness(.98);box-shadow:0 6px 18px rgba(43,227,198,.2);}
.btn-ghost{
  color:var(--text);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
}
.btn-ghost:hover{
  border-color:rgba(43,227,198,.45);
  color:var(--primary);
  transform:translateY(-1px);
}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:var(--muted);
  position:relative;
}
.btn-text::after{
  content:"";
  position:absolute;
  left:0;bottom:-3px;
  height:1px;width:0;
  background:var(--primary);
  transition:width .22s var(--ease);
}
.btn-text:hover{color:var(--primary);}
.btn-text:hover::after{width:100%;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,11,24,.72);
  backdrop-filter:blur(18px);
  border-bottom:1px solid transparent;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.site-header.is-scrolled{
  border-bottom-color:var(--split);
  background:rgba(7,11,24,.88);
}
.header-inner{
  height:72px;
  display:flex;
  align-items:center;
  gap:32px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:32px;height:32px;
  display:grid;place-items:center;
  border-radius:10px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.02em;
  color:#04241F;
  background:linear-gradient(135deg,#2BE3C6 0%,#8B5CF6 130%);
  box-shadow:0 4px 16px rgba(43,227,198,.3);
}
.brand-text{
  font-size:17px;
  font-weight:600;
  letter-spacing:-.01em;
}
.brand-text em{
  font-style:normal;
  font-weight:400;
  font-size:13px;
  color:var(--dim);
  margin-left:2px;
  letter-spacing:.08em;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:28px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--muted);
  padding:6px 0;
}
.nav-link:hover{color:var(--text);}
.nav-link.is-active{color:var(--text);font-weight:500;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(43,227,198,.7);
}
.header-actions{
  display:flex;
  align-items:center;
  gap:14px;
  flex-shrink:0;
}
.icon-btn{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:999px;
  border:1px solid var(--line);
  color:var(--muted);
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.icon-btn:hover{color:var(--primary);border-color:rgba(43,227,198,.4);background:rgba(255,255,255,.04);}
.icon-btn svg{width:19px;height:19px;}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  border-radius:12px;
  border:1px solid var(--line);
  color:var(--text);
  place-items:center;
}
.nav-toggle span{
  display:block;
  width:18px;height:1.5px;
  background:currentColor;
  border-radius:2px;
  position:relative;
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;left:0;
  width:18px;height:1.5px;
  background:currentColor;
  border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

.drawer{
  display:none;
  position:fixed;
  inset:0;
  z-index:90;
  background:rgba(7,11,24,.97);
  backdrop-filter:blur(20px);
  padding:24px 24px 40px;
  flex-direction:column;
}
.drawer.is-open{display:flex;}
.drawer-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:56px;
  margin-bottom:24px;
}
.drawer-close{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:12px;
  border:1px solid var(--line);
  color:var(--text);
  font-size:20px;
  line-height:1;
}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  padding:20px 0;
  font-size:22px;
  color:var(--muted);
  border-bottom:1px solid var(--split);
}
.drawer-nav a.is-active{color:var(--primary);}
.drawer-cta{margin-top:auto;padding-top:32px;}
.drawer-cta .btn{width:100%;}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;
  padding:64px 0 88px;
  overflow:hidden;
  border-bottom:1px solid var(--split);
}
.page-head::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  opacity:.22;
}
.page-head::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(680px 360px at 12% 0%,rgba(43,227,198,.12),transparent 70%),
    radial-gradient(560px 340px at 88% 12%,rgba(139,92,246,.08),transparent 70%),
    linear-gradient(180deg,rgba(7,11,24,.4) 0%,rgba(7,11,24,.96) 100%);
}
.page-head .container{position:relative;z-index:2;}
.page-head-grid{
  display:grid;
  grid-template-columns:minmax(0,1.55fr) minmax(280px,.85fr);
  gap:48px;
  align-items:end;
}
.crumbs{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--dim);
  margin-bottom:20px;
}
.crumbs a:hover{color:var(--primary);}
.crumbs span.sep{color:rgba(255,255,255,.18);}
.page-head h1{
  font-size:40px;
  font-weight:700;
  letter-spacing:-.01em;
  max-width:15em;
}
.page-head h1 em{
  font-style:normal;
  color:var(--primary);
}
.lede{
  margin-top:18px;
  font-size:16px;
  color:var(--muted);
  max-width:34em;
}
.chip-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:26px;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:7px 14px;
  border-radius:999px;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--muted);
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.chip:hover{color:var(--primary);border-color:rgba(43,227,198,.4);}

.glass-card{
  position:relative;
  border-radius:var(--r-lg);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.glass-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.35),transparent);
}
.info-card{padding:26px 24px;}
.info-card h2{
  font-size:14px;
  font-weight:500;
  letter-spacing:.08em;
  color:var(--dim);
  margin-bottom:18px;
}
.stat-row{display:grid;gap:18px;}
.stat{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:12px;
  padding-bottom:14px;
  border-bottom:1px solid var(--split);
}
.stat:last-child{border-bottom:0;padding-bottom:0;}
.stat-num{
  font-size:26px;
  font-weight:600;
  color:var(--primary);
  font-variant-numeric:tabular-nums;
  text-shadow:0 0 18px rgba(43,227,198,.45);
}
.stat-label{
  font-size:13px;
  color:var(--muted);
  text-align:right;
}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
}
.eyebrow{
  display:block;
  font-size:12px;
  letter-spacing:.16em;
  color:var(--primary);
  margin-bottom:12px;
}
.section-title{font-size:28px;}
.section-sub{
  margin-top:12px;
  color:var(--muted);
  font-size:15px;
  max-width:36em;
}

/* ---------- 横向大卡 ---------- */
.wide-list{display:grid;gap:20px;}
.wide-card{
  display:grid;
  grid-template-columns:minmax(0,420px) minmax(0,1fr);
  gap:32px;
  align-items:center;
  padding:22px;
  border-radius:var(--r-lg);
  background:var(--panel);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.wide-card:hover{
  transform:translateY(-2px);
  border-color:rgba(43,227,198,.32);
  box-shadow:var(--shadow-hover);
}
.wide-media{
  position:relative;
  border-radius:var(--r-md);
  overflow:hidden;
  aspect-ratio:16/9;
  background:var(--panel-2);
}
.wide-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .3s var(--ease);
}
.wide-card:hover .wide-media img{transform:scale(1.03);}
.badge{
  position:absolute;
  top:12px;left:12px;
  padding:5px 12px;
  border-radius:999px;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--warm);
  background:rgba(7,11,24,.7);
  border:1px solid rgba(255,176,32,.45);
  backdrop-filter:blur(8px);
}
.wide-body{padding-right:8px;}
.wide-body h3{font-size:20px;margin-bottom:12px;}
.wide-body p{color:var(--muted);font-size:15px;}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  margin-top:20px;
  font-size:13px;
  color:var(--dim);
  font-variant-numeric:tabular-nums;
}
.meta-row .dot{
  width:4px;height:4px;
  border-radius:50%;
  background:rgba(255,255,255,.2);
}

/* ---------- 时间轴 ---------- */
.timeline{
  position:relative;
  padding-left:34px;
  max-width:840px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:7px;top:8px;bottom:8px;
  width:1px;
  background:linear-gradient(180deg,rgba(43,227,198,.5),rgba(255,255,255,.06));
}
.tl-item{
  position:relative;
  padding:0 0 34px 0;
}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";
  position:absolute;
  left:-34px;top:8px;
  width:15px;height:15px;
  border-radius:50%;
  background:var(--panel);
  border:1px solid rgba(43,227,198,.55);
}
.tl-item::after{
  content:"";
  position:absolute;
  left:-30px;top:12px;
  width:7px;height:7px;
  border-radius:50%;
  background:var(--primary);
}
.tl-num{
  display:block;
  font-size:12px;
  letter-spacing:.18em;
  color:var(--primary);
  font-variant-numeric:tabular-nums;
  margin-bottom:8px;
}
.tl-item h3{font-size:18px;margin-bottom:8px;}
.tl-item p{color:var(--muted);font-size:15px;max-width:44em;}

/* ---------- 对照表 ---------- */
.compare{
  display:grid;
  grid-template-columns:1fr 1fr;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--panel);
  overflow:hidden;
}
.compare-col{padding:30px 28px;}
.compare-col + .compare-col{border-left:1px solid var(--split);}
.compare-col h3{
  font-size:18px;
  padding-bottom:18px;
  margin-bottom:6px;
  border-bottom:1px solid var(--split);
}
.compare-col h3 span{
  display:block;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--dim);
  font-weight:400;
  margin-top:8px;
}
.compare-col li{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:18px;
  padding:14px 0;
  border-bottom:1px solid var(--split);
  font-size:15px;
}
.compare-col li:last-child{border-bottom:0;padding-bottom:0;}
.compare-col .k{color:var(--dim);font-size:13px;flex-shrink:0;padding-top:2px;}
.compare-col .v{color:var(--text);text-align:right;font-size:14px;}

/* ---------- FAQ ---------- */
.faq{max-width:820px;}
.faq-item{border-bottom:1px solid var(--split);}
.faq-item summary{
  list-style:none;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 0;
  font-size:17px;
  font-weight:500;
  cursor:pointer;
  transition:color .18s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--primary);}
.faq-item summary::after{
  content:"+";
  font-size:20px;
  font-weight:400;
  color:var(--primary);
  line-height:1;
  transition:transform .22s var(--ease);
  flex-shrink:0;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-a{padding:0 0 24px;color:var(--muted);font-size:15px;max-width:60em;}

/* ---------- CTA 横条 ---------- */
.cta-bar{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:34px 36px;
  border-radius:var(--r-lg);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.cta-bar::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,227,198,.6),transparent);
}
.cta-bar h2{font-size:22px;margin-bottom:8px;}
.cta-bar p{color:var(--muted);font-size:15px;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:0;
  background:#050810;
  border-top:1px solid var(--split);
  padding:64px 0 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand .brand{margin-bottom:18px;}
.footer-desc{
  color:var(--dim);
  font-size:14px;
  max-width:28em;
}
.footer-col h3{
  font-size:14px;
  font-weight:500;
  letter-spacing:.08em;
  color:var(--text);
  margin-bottom:18px;
}
.footer-col li{margin-bottom:12px;}
.footer-col a{color:var(--dim);font-size:14px;}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  margin-top:48px;
  padding-top:24px;
  border-top:1px solid var(--split);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--dim);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{padding:0 32px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .page-head{padding:48px 0 64px;}
  .page-head-grid{grid-template-columns:1fr;gap:32px;align-items:start;}
  .page-head h1{font-size:32px;}
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .section-title{font-size:24px;}
  .wide-card{grid-template-columns:minmax(0,340px) minmax(0,1fr);gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .header-inner{height:64px;gap:16px;}
  .main-nav{display:none;}
  .nav-toggle{display:grid;}
  .header-actions .btn-sm{display:none;}
  .page-head{padding:36px 0 56px;}
  .page-head h1{font-size:30px;}
  .lede{font-size:15px;}
  .section{padding:56px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px;}
  .wide-card{grid-template-columns:1fr;gap:18px;padding:16px;}
  .wide-body{padding-right:0;}
  .compare{grid-template-columns:1fr;}
  .compare-col + .compare-col{border-left:0;border-top:1px solid var(--split);}
  .compare-col{padding:24px 20px;}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:26px 22px;gap:20px;}
  .cta-bar .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
  .timeline{padding-left:28px;}
  .tl-item::before{left:-28px;}
  .tl-item::after{left:-24px;}
}
@media (max-width:479px){
  .page-head h1{font-size:26px;}
  .section-title{font-size:21px;}
  .stat-num{font-size:22px;}
  .compare-col li{flex-direction:column;gap:4px;}
  .compare-col .v{text-align:left;}
  .btn{padding:12px 22px;font-size:14px;}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important;}
  .wide-card:hover{transform:none;}
}