/* roulang page: index */
:root{
  --bg-deep:#060B12;
  --bg-panel:#0C141E;
  --bg-elev:#111B26;
  --glass:rgba(255,255,255,.045);
  --glass-2:rgba(255,255,255,.08);
  --stroke:rgba(150,215,235,.14);
  --stroke-hi:rgba(31,227,176,.45);
  --accent:#1FE3B0;
  --accent-deep:#0FB48C;
  --accent-warm:#FF6A3D;
  --accent-gold:#FFC24B;
  --text:#E9F1F7;
  --text-2:#9DAFBF;
  --text-3:#6B7E8E;
  --radius-lg:24px;
  --radius-md:20px;
  --radius-sm:14px;
  --shadow-card:0 20px 50px -28px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.06);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-deep);
  color:var(--text);
  font-family:'PingFang SC','HarmonyOS Sans SC','Noto Sans SC','Microsoft YaHei',sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  top:-340px;left:50%;
  width:920px;height:660px;
  transform:translateX(-50%);
  background:radial-gradient(closest-side, rgba(31,227,176,.08), transparent 72%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
.num{font-variant-numeric:tabular-nums;letter-spacing:.01em;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1;}
main{position:relative;z-index:1;}
.section{padding:88px 0 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px;flex-wrap:wrap;}
.section-head h2{
  font-size:clamp(22px,2.6vw,32px);
  line-height:1.28;
  font-weight:700;
  letter-spacing:.01em;
}
.section-head .section-note{font-size:13px;color:var(--text-3);}
.text-link{font-size:14px;color:var(--text-2);transition:color .18s var(--ease);}
.text-link:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px;}
.text-link:focus-visible{outline:2px solid var(--accent);outline-offset:4px;border-radius:6px;}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;padding:12px 0;background:linear-gradient(180deg, rgba(6,11,18,.92), rgba(6,11,18,.55) 70%, transparent);}
.nav-shell{
  display:flex;align-items:center;gap:16px;
  padding:10px 14px;
  border-radius:var(--radius-lg);
  background:var(--glass);
  border:1px solid var(--stroke);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:0 20px 50px -30px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.05);
  transition:border-color .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease);
}
.nav-shell.is-scrolled{
  border-color:rgba(150,215,235,.26);
  background:rgba(12,20,30,.86);
  box-shadow:0 24px 54px -28px rgba(0,0,0,.95), inset 0 1px 0 rgba(255,255,255,.07);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;padding:6px 10px 6px 6px;border-radius:16px;transition:background .2s var(--ease);}
.brand:hover{background:var(--glass-2);}
.brand:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.brand-mark{width:30px;height:30px;color:var(--accent);flex:0 0 auto;filter:drop-shadow(0 0 10px rgba(31,227,176,.35));}
.brand-text{font-size:15px;font-weight:700;letter-spacing:.02em;white-space:nowrap;}
.brand-text-short{display:none;font-size:15px;font-weight:700;white-space:nowrap;}
.nav-cards{display:flex;align-items:center;gap:8px;flex:1 1 auto;min-width:0;}
.nav-card{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 12px;border-radius:14px;
  font-size:13px;color:var(--text-2);
  background:rgba(255,255,255,.03);
  border:1px solid transparent;
  white-space:nowrap;
  transition:color .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease), transform .18s var(--ease);
}
.nav-card svg{width:16px;height:16px;flex:0 0 auto;opacity:.85;}
.nav-card:hover{color:var(--text);border-color:var(--stroke-hi);background:rgba(31,227,176,.08);transform:translateY(-1px);}
.nav-card:active{transform:translateY(0);}
.nav-card:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.nav-card.is-active{color:var(--text);border-color:var(--stroke-hi);background:rgba(31,227,176,.12);box-shadow:0 0 20px -10px rgba(31,227,176,.7);}
.nav-cta{flex:0 0 auto;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease), box-shadow .18s var(--ease), filter .18s var(--ease), background .18s var(--ease), border-color .18s var(--ease), color .18s var(--ease);
}
.btn-primary{
  color:#04211A;
  background:linear-gradient(135deg, var(--accent), var(--accent-deep));
  box-shadow:0 0 24px -6px rgba(31,227,176,.55);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.05);box-shadow:0 0 32px -6px rgba(31,227,176,.8);}
.btn-primary:active{transform:translateY(0);filter:brightness(.98);}
.btn-ghost{color:var(--text);background:transparent;border-color:var(--stroke);}
.btn-ghost:hover{background:var(--glass-2);border-color:var(--stroke-hi);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.btn-sm{height:42px;padding:0 18px;font-size:14px;}

/* ---------- Hero ---------- */
.hero{padding-top:28px;}
.hero-card{
  position:relative;
  border-radius:var(--radius-lg);
  border:1px solid var(--stroke);
  background:var(--bg-panel);
  overflow:hidden;
  box-shadow:var(--shadow-card);
}
.hero-card::before{
  content:"";
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  opacity:.55;
}
.hero-card::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(140deg, rgba(6,11,18,.94) 12%, rgba(6,11,18,.86) 48%, rgba(6,17,24,.8) 100%);
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:7fr 5fr;gap:36px;
  padding:38px;
}
.badge-live{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  font-size:12px;letter-spacing:.04em;color:var(--accent);
  background:rgba(31,227,176,.1);
  border:1px solid rgba(31,227,176,.32);
}
.dot-pulse{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 0 rgba(31,227,176,.6);animation:pulse 2.2s infinite;}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(31,227,176,.55);}
  70%{box-shadow:0 0 0 10px rgba(31,227,176,0);}
  100%{box-shadow:0 0 0 0 rgba(31,227,176,0);}
}
.hero h1{
  margin-top:18px;
  font-size:clamp(30px,4.4vw,52px);
  line-height:1.15;
  font-weight:800;
  letter-spacing:.01em;
}
.hero-sub{margin-top:16px;font-size:16px;color:var(--text-2);max-width:520px;}
.countdown{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:26px;max-width:420px;}
.cd-cell{
  padding:12px 8px;border-radius:var(--radius-sm);
  background:var(--glass);
  border:1px solid var(--stroke);
  text-align:center;
}
.cd-cell strong{
  display:block;font-size:clamp(22px,2.6vw,30px);font-weight:700;
  color:var(--accent);
  text-shadow:0 0 18px rgba(31,227,176,.35);
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.cd-cell span{display:block;font-size:12px;color:var(--text-3);letter-spacing:.06em;margin-top:2px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.subscribe{
  margin-top:26px;display:flex;flex-wrap:wrap;align-items:center;gap:10px;
}
.subscribe-form{
  display:flex;align-items:center;gap:6px;
  padding:5px 5px 5px 16px;border-radius:999px;
  background:rgba(6,11,18,.6);
  border:1px solid var(--stroke);
  transition:border-color .18s var(--ease), box-shadow .18s var(--ease);
}
.subscribe-form:focus-within{border-color:var(--stroke-hi);box-shadow:0 0 0 3px rgba(31,227,176,.16);}
.subscribe-form input{
  width:190px;background:transparent;border:0;outline:none;
  color:var(--text);font-size:14px;height:38px;
}
.subscribe-form input::placeholder{color:var(--text-3);}
.subscribe-note{font-size:12px;color:var(--text-3);flex:1 1 100%;}

.hero-visual{display:flex;flex-direction:column;gap:16px;}
.cover-wrap{position:relative;border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--stroke);aspect-ratio:16/10;background:rgba(255,255,255,.03);}
.cover-wrap img{width:100%;height:100%;object-fit:cover;}
.cover-tag{
  position:absolute;top:12px;left:12px;
  padding:4px 12px;border-radius:999px;font-size:12px;letter-spacing:.04em;
  color:#04211A;background:var(--accent-gold);font-weight:700;
}
.cover-mask{position:absolute;inset:0;background:linear-gradient(180deg, rgba(6,11,18,0) 40%, rgba(6,11,18,.82));}
.highlights{
  border-radius:var(--radius-md);
  background:rgba(12,20,30,.72);
  border:1px solid var(--stroke);
  padding:6px 18px;
}
.highlights li{
  display:flex;gap:10px;align-items:flex-start;
  padding:12px 0;font-size:14px;color:var(--text-2);
}
.highlights li + li{border-top:1px solid rgba(150,215,235,.1);}
.highlights svg{width:14px;height:14px;margin-top:6px;color:var(--accent);flex:0 0 auto;}

/* ---------- 快捷入口 ---------- */
.quick-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px;}
.quick-card{
  display:flex;flex-direction:column;gap:10px;
  padding:22px 20px;border-radius:var(--radius-md);
  background:var(--glass);
  border:1px solid var(--stroke);
  box-shadow:var(--shadow-card);
  transition:transform .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}
.quick-card:hover{transform:translateY(-3px);border-color:var(--stroke-hi);background:rgba(31,227,176,.06);}
.quick-card:active{transform:translateY(-1px);}
.quick-card:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.quick-icon{
  width:38px;height:38px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(31,227,176,.12);
  border:1px solid rgba(31,227,176,.26);
  color:var(--accent);
}
.quick-icon svg{width:18px;height:18px;}
.quick-card h3{font-size:16px;font-weight:600;line-height:1.5;}
.quick-card p{font-size:13px;color:var(--text-3);line-height:1.7;}

/* ---------- 步骤 ---------- */
.steps{display:grid;gap:18px;max-width:960px;}
.step{
  display:flex;align-items:center;gap:28px;
  padding:24px 26px;border-radius:var(--radius-md);
  background:var(--glass);
  border:1px solid var(--stroke);
  transition:border-color .18s var(--ease), background .18s var(--ease);
}
.step:hover{border-color:var(--stroke-hi);background:rgba(255,255,255,.06);}
.step:nth-child(even){flex-direction:row-reverse;text-align:right;}
.step-no{
  flex:0 0 auto;
  width:70px;height:70px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:24px;font-weight:700;color:var(--accent);
  border:2px solid rgba(31,227,176,.4);
  font-variant-numeric:tabular-nums;
  background:rgba(31,227,176,.05);
}
.step h3{font-size:19px;font-weight:600;margin-bottom:4px;}
.step p{font-size:14px;color:var(--text-2);}

/* ---------- 最新信息 ---------- */
.news-list{display:grid;gap:16px;}
.news-card{
  display:grid;grid-template-columns:1fr 96px;gap:22px;align-items:center;
  padding:22px 24px;border-radius:var(--radius-md);
  background:var(--glass);
  border:1px solid var(--stroke);
  box-shadow:var(--shadow-card);
  transition:transform .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}
.news-card:hover{transform:translateY(-2px);border-color:var(--stroke-hi);background:rgba(255,255,255,.06);}
.news-card:active{transform:translateY(0);}
.news-card:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.news-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.tag{
  display:inline-flex;align-items:center;
  padding:3px 11px;border-radius:999px;
  font-size:12px;letter-spacing:.04em;
  color:var(--accent);
  background:rgba(31,227,176,.1);
  border:1px solid rgba(31,227,176,.26);
}
.news-time{font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.news-card h3{
  margin-top:8px;font-size:17px;font-weight:600;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card p{
  margin-top:6px;font-size:14px;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-thumb{
  width:96px;height:72px;border-radius:12px;overflow:hidden;
  border:1px solid var(--stroke);background:rgba(255,255,255,.04);
}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:52px 24px;border-radius:var(--radius-md);
  background:var(--glass);border:1px dashed rgba(150,215,235,.22);
  text-align:center;color:var(--text-2);font-size:14px;
}
.empty-state svg{width:40px;height:40px;color:var(--text-3);}

/* ---------- 数据条 ---------- */
.stats{
  margin-top:56px;
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  border-radius:var(--radius-md);
  background:var(--bg-panel);
  border:1px solid var(--stroke);
  overflow:hidden;
}
.stat{padding:26px 20px;text-align:center;}
.stat + .stat{border-left:1px solid rgba(150,215,235,.12);}
.stat strong{
  display:block;font-size:clamp(24px,3vw,34px);font-weight:700;
  color:var(--accent-gold);line-height:1.2;
  font-variant-numeric:tabular-nums;
}
.stat span{display:block;font-size:13px;color:var(--text-2);margin-top:4px;}

/* ---------- FAQ ---------- */
.faq{max-width:820px;display:grid;gap:12px;}
.faq-item{
  border-radius:var(--radius-sm);
  background:var(--glass);
  border:1px solid var(--stroke);
  overflow:hidden;
  transition:background .18s var(--ease), border-color .18s var(--ease);
}
.faq-item[open]{background:rgba(255,255,255,.07);border-color:rgba(150,215,235,.24);}
.faq-item:hover{border-color:var(--stroke-hi);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:focus-visible{outline:2px solid var(--accent);outline-offset:-3px;}
.faq-arrow{width:18px;height:18px;color:var(--text-3);transition:transform .2s var(--ease), color .2s var(--ease);flex:0 0 auto;}
.faq-item[open] .faq-arrow{transform:rotate(180deg);color:var(--accent);}
.faq-a{padding:0 22px 20px;font-size:15px;color:var(--text-2);line-height:1.85;}

/* ---------- CTA ---------- */
.cta-panel{
  margin-top:88px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  padding:38px 40px;border-radius:var(--radius-lg);
  background:linear-gradient(120deg, rgba(31,227,176,.1), rgba(255,255,255,.03) 55%, rgba(255,106,61,.08));
  border:1px solid var(--stroke);
  box-shadow:var(--shadow-card);
}
.cta-panel h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.3;}
.cta-panel p{margin-top:8px;font-size:14px;color:var(--text-2);max-width:560px;}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:88px;background:var(--bg-panel);border-top:1px solid var(--stroke);}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px;
  padding:56px 0 40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px;}
.footer-brand .brand-mark{width:26px;height:26px;}
.footer-brand strong{font-size:15px;font-weight:700;}
.footer-text{font-size:13px;color:var(--text-3);line-height:1.9;max-width:300px;}
.footer-col h3{font-size:13px;letter-spacing:.06em;color:var(--text);margin-bottom:14px;font-weight:600;}
.footer-col li + li{margin-top:9px;}
.footer-col a{font-size:13px;color:var(--text-3);transition:color .18s var(--ease);}
.footer-col a:hover{color:var(--accent);}
.footer-col a:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}
.footer-col p{font-size:13px;color:var(--text-3);line-height:1.9;}
.footer-bottom{
  border-top:1px solid rgba(150,215,235,.1);
  padding:18px 0 24px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .section{padding-top:64px;}
  .hero-inner{grid-template-columns:1fr;gap:28px;padding:28px;}
  .hero-visual{order:-1;}
  .nav-shell{flex-wrap:nowrap;}
  .nav-cards{
    overflow-x:auto;
    scroll-snap-type:x proximity;
    padding-bottom:2px;
    -ms-overflow-style:none;
    scrollbar-width:none;
  }
  .nav-cards::-webkit-scrollbar{display:none;}
  .nav-card{scroll-snap-align:start;}
  .quick-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:760px){
  .container{padding:0 20px;}
  .brand-text{display:none;}
  .brand-text-short{display:inline;}
  .nav-shell{padding:8px 10px;gap:10px;border-radius:18px;}
  .quick-grid{grid-template-columns:1fr;gap:14px;}
  .step{flex-direction:row !important;text-align:left !important;gap:18px;padding:20px;}
  .step-no{width:54px;height:54px;font-size:20px;}
  .news-card{grid-template-columns:1fr;padding:20px;}
  .news-thumb{width:100%;height:150px;order:-1;}
  .stats{grid-template-columns:1fr 1fr;}
  .stat:nth-child(3){border-left:0;}
  .stat:nth-child(n+3){border-top:1px solid rgba(150,215,235,.12);}
  .stat{padding:20px 14px;}
  .cta-panel{padding:28px 22px;margin-top:64px;}
  .footer-grid{grid-template-columns:1fr;padding:40px 0 28px;}
  .site-footer{margin-top:64px;}
  .subscribe-form{width:100%;}
  .subscribe-form input{width:100%;flex:1 1 auto;}
}
@media (max-width:520px){
  .hero h1{font-size:30px;}
  .countdown{grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;}
  .cd-cell{padding:10px 4px;}
  .cd-cell strong{font-size:20px;}
  .hero-actions .btn{width:100%;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
}

/* roulang page: category1 */
:root{
  --bg-deep:#060B12;
  --bg-panel:#0C141E;
  --bg-elev:#111B26;
  --glass:rgba(255,255,255,.045);
  --glass-2:rgba(255,255,255,.08);
  --stroke:rgba(150,215,235,.14);
  --stroke-hi:rgba(31,227,176,.45);
  --accent:#1FE3B0;
  --accent-deep:#0FB48C;
  --accent-warm:#FF6A3D;
  --accent-gold:#FFC24B;
  --text:#E9F1F7;
  --text-2:#9DAFBF;
  --text-3:#6B7E8E;
  --r-lg:24px;
  --r-md:20px;
  --r-sm:14px;
  --shadow-card:0 20px 50px -28px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.06);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-deep);
  color:var(--text);
  font-family:'PingFang SC','HarmonyOS Sans SC','Noto Sans SC','Microsoft YaHei',sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  top:-260px;left:50%;
  width:900px;height:520px;
  transform:translateX(-50%);
  background:radial-gradient(closest-side, rgba(31,227,176,.08), transparent 72%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  padding:16px 0;
  transition:padding .2s var(--ease);
}
.site-header::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg, rgba(6,11,18,.92), rgba(6,11,18,.45) 70%, transparent);
  pointer-events:none;
  z-index:-1;
}
.nav-shell{
  display:flex;
  align-items:center;
  gap:16px;
  padding:11px 16px;
  border-radius:var(--r-lg);
  background:rgba(12,20,30,.74);
  border:1px solid var(--stroke);
  box-shadow:0 18px 40px -30px rgba(0,0,0,.95), inset 0 1px 0 rgba(255,255,255,.05);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  transition:border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.site-header.is-scrolled .nav-shell{
  border-color:rgba(150,215,235,.24);
  box-shadow:0 22px 48px -28px rgba(0,0,0,1), inset 0 1px 0 rgba(255,255,255,.07);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:15px;
  font-weight:700;
  letter-spacing:.01em;
  color:var(--text);
  white-space:nowrap;
  padding:4px 6px;
  border-radius:10px;
  transition:color .18s var(--ease);
}
.brand-mark{width:28px;height:28px;color:var(--accent);flex:none;filter:drop-shadow(0 0 10px rgba(31,227,176,.4))}
.brand-text-short{display:none}
.brand:hover{color:var(--accent)}
.brand:active{transform:translateY(1px)}
.nav-cards{
  display:flex;
  align-items:center;
  gap:6px;
  flex:1 1 auto;
  min-width:0;
  overflow-x:auto;
  scroll-snap-type:x proximity;
  padding:4px;
  scrollbar-width:none;
}
.nav-cards::-webkit-scrollbar{display:none}
.nav-card{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:7px 12px;
  border-radius:999px;
  border:1px solid transparent;
  color:var(--text-2);
  font-size:13px;
  font-weight:500;
  white-space:nowrap;
  scroll-snap-align:start;
  transition:background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease), box-shadow .18s var(--ease);
}
.nav-card svg{width:16px;height:16px;flex:none}
.nav-card:hover{background:var(--glass);border-color:var(--stroke);color:var(--text)}
.nav-card:active{transform:translateY(1px)}
.nav-card.is-active{
  color:var(--accent);
  border-color:var(--stroke-hi);
  background:rgba(31,227,176,.10);
  box-shadow:0 0 20px -10px rgba(31,227,176,.75);
}
.nav-cta{flex:none}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 22px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  cursor:pointer;
  transition:transform .18s var(--ease), box-shadow .18s var(--ease), background .18s var(--ease), border-color .18s var(--ease), color .18s var(--ease), filter .18s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-deep));
  color:#04120E;
  box-shadow:0 0 24px -6px rgba(31,227,176,.55);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.05);box-shadow:0 0 30px -4px rgba(31,227,176,.7)}
.btn-primary:active{transform:translateY(0);filter:brightness(.98)}
.btn-ghost{
  background:transparent;
  border-color:var(--stroke);
  color:var(--text);
}
.btn-ghost:hover{background:var(--glass-2);border-color:var(--stroke-hi);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:42px;padding:0 18px;font-size:14px}

/* ---------- breadcrumb ---------- */
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
  padding:22px 0 18px;
}
.breadcrumb a{color:var(--text-2);transition:color .18s var(--ease)}
.breadcrumb a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px}
.breadcrumb .sep{color:rgba(107,126,142,.7)}
.breadcrumb .current{color:var(--text)}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid var(--stroke);
  padding:38px;
  background-image:
    linear-gradient(115deg, rgba(6,11,18,.94) 0%, rgba(6,11,18,.88) 46%, rgba(6,11,18,.76) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  box-shadow:var(--shadow-card);
}
.hero-grid{
  display:grid;
  grid-template-columns:1.4fr .9fr;
  gap:32px;
  align-items:center;
}
.status-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  border:1px solid var(--stroke-hi);
  background:rgba(31,227,176,.09);
  color:var(--accent);
  font-size:12px;
  letter-spacing:.04em;
  font-weight:600;
}
.pulse-dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 0 rgba(31,227,176,.6);
  animation:pulse 2.4s infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(31,227,176,.55)}
  70%{box-shadow:0 0 0 10px rgba(31,227,176,0)}
  100%{box-shadow:0 0 0 0 rgba(31,227,176,0)}
}
h1{
  font-size:clamp(30px,4.4vw,52px);
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.01em;
  margin-top:18px;
}
.hero-sub{
  margin-top:16px;
  font-size:16px;
  line-height:1.8;
  color:var(--text-2);
  max-width:34em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-figure{
  position:relative;
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--stroke);
  background:var(--bg-elev);
  aspect-ratio:16/11;
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-figure::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(6,11,18,.05) 0%, rgba(6,11,18,.62) 100%);
}
.figure-tag{
  position:absolute;
  top:12px;left:12px;
  z-index:2;
  padding:5px 11px;
  border-radius:999px;
  font-size:12px;
  letter-spacing:.04em;
  font-weight:600;
  color:#04120E;
  background:var(--accent);
}
.figure-cap{
  position:absolute;
  left:14px;right:14px;bottom:12px;
  z-index:2;
  font-size:13px;
  color:#DCEAF2;
  line-height:1.6;
}

/* ---------- category pills ---------- */
.cat-pills{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-top:24px;
}
.pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 16px;
  border-radius:999px;
  border:1px solid var(--stroke);
  background:var(--glass);
  color:var(--text-2);
  font-size:13.5px;
  font-weight:500;
  transition:all .18s var(--ease);
}
.pill:hover{color:var(--text);border-color:var(--stroke-hi);background:var(--glass-2);transform:translateY(-1px)}
.pill:active{transform:translateY(0)}
.pill.is-current{
  color:var(--accent);
  border-color:var(--stroke-hi);
  background:rgba(31,227,176,.10);
  box-shadow:0 0 18px -10px rgba(31,227,176,.8);
}

/* ---------- blocks ---------- */
.block{margin-top:72px}
.section-head{max-width:720px}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.14em;
  font-weight:600;
  color:var(--accent);
  text-transform:uppercase;
}
h2{
  font-size:clamp(22px,2.6vw,32px);
  line-height:1.28;
  font-weight:700;
  margin-top:10px;
  letter-spacing:-.01em;
}
.section-desc{margin-top:12px;color:var(--text-2);font-size:15.5px;max-width:62ch}

/* ---------- steps + info card ---------- */
.steps-layout{
  display:grid;
  grid-template-columns:1.65fr 1fr;
  gap:28px;
  margin-top:34px;
  align-items:start;
}
.steps-list{
  display:flex;
  flex-direction:column;
  gap:14px;
  counter-reset:step;
}
.step-item{
  display:grid;
  grid-template-columns:48px 1fr;
  gap:18px;
  padding:22px 24px;
  border-radius:var(--r-md);
  border:1px solid var(--stroke);
  background:var(--glass);
  transition:border-color .2s var(--ease), background .2s var(--ease), transform .2s var(--ease);
}
.step-item:hover{border-color:var(--stroke-hi);background:var(--glass-2);transform:translateY(-2px)}
.step-num{
  counter-increment:step;
  width:48px;height:48px;
  border-radius:50%;
  border:1.5px solid var(--accent);
  display:flex;align-items:center;justify-content:center;
  color:var(--accent);
  font-weight:700;
  font-size:16px;
  font-variant-numeric:tabular-nums;
  background:rgba(31,227,176,.07);
}
.step-num::before{content:counter(step,decimal-leading-zero)}
.step-item h3{font-size:17px;font-weight:600;line-height:1.5}
.step-item p{margin-top:8px;color:var(--text-2);font-size:14.5px;line-height:1.8}
.step-hint{
  display:inline-flex;
  align-items:center;
  gap:7px;
  margin-top:12px;
  font-size:13px;
  color:var(--accent-warm);
  background:rgba(255,106,61,.08);
  border:1px solid rgba(255,106,61,.28);
  border-radius:10px;
  padding:5px 11px;
}
.step-hint svg{width:14px;height:14px;flex:none}

.info-card{
  position:sticky;
  top:104px;
  border-radius:var(--r-lg);
  border:1px solid var(--stroke);
  background:linear-gradient(180deg, rgba(17,27,38,.95), rgba(12,20,30,.95));
  box-shadow:var(--shadow-card);
  padding:26px;
}
.info-card h3{font-size:18px;font-weight:700}
.info-card .info-note{margin-top:8px;font-size:13.5px;color:var(--text-3);line-height:1.75}
.info-rows{margin-top:20px;display:flex;flex-direction:column}
.info-row{
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  gap:14px;
  padding:12px 0;
  border-bottom:1px solid rgba(150,215,235,.10);
  font-size:14px;
}
.info-row:last-child{border-bottom:none}
.info-row dt{color:var(--text-3);flex:none}
.info-row dd{
  color:var(--text);
  text-align:right;
  font-weight:600;
  font-variant-numeric:tabular-nums;
  line-height:1.6;
}
.info-row dd.accent{color:var(--accent)}
.info-card .btn{width:100%;margin-top:20px}

/* ---------- prep list ---------- */
.prep-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:14px;
  margin-top:30px;
}
.prep-item{
  display:flex;
  gap:14px;
  padding:20px 22px;
  border-radius:var(--r-sm);
  border:1px solid var(--stroke);
  background:var(--bg-panel);
  transition:border-color .2s var(--ease), transform .2s var(--ease), background .2s var(--ease);
}
.prep-item:hover{border-color:var(--stroke-hi);transform:translateY(-2px);background:var(--bg-elev)}
.prep-icon{
  width:36px;height:36px;flex:none;
  border-radius:11px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(31,227,176,.09);
  color:var(--accent);
  border:1px solid rgba(31,227,176,.22);
}
.prep-icon svg{width:18px;height:18px}
.prep-item strong{display:block;font-size:15px;font-weight:600}
.prep-item span{display:block;margin-top:6px;font-size:13.5px;color:var(--text-2);line-height:1.75}

/* ---------- stat bar ---------- */
.stat-bar{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  border-radius:var(--r-md);
  border:1px solid var(--stroke);
  background:var(--glass);
  overflow:hidden;
}
.stat-cell{
  padding:24px 22px;
  border-right:1px solid rgba(150,215,235,.12);
}
.stat-cell:last-child{border-right:none}
.stat-value{
  font-size:clamp(22px,2.4vw,30px);
  font-weight:800;
  color:var(--accent-gold);
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.stat-label{margin-top:6px;font-size:13px;color:var(--text-2)}

/* ---------- faq ---------- */
.faq-list{
  max-width:860px;
  margin-top:30px;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.faq-item{
  border-radius:var(--r-sm);
  border:1px solid var(--stroke);
  background:var(--glass);
  padding:0 20px;
  transition:border-color .2s var(--ease), background .2s var(--ease);
}
.faq-item:hover{border-color:rgba(31,227,176,.3);background:rgba(255,255,255,.06)}
.faq-item[open]{background:var(--glass-2);border-color:var(--stroke-hi)}
.faq-item summary{
  list-style:none;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 0;
  cursor:pointer;
  font-size:15.5px;
  font-weight:600;
  color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-arrow{width:18px;height:18px;flex:none;color:var(--text-3);transition:transform .22s var(--ease), color .22s var(--ease)}
.faq-item[open] .faq-arrow{transform:rotate(180deg);color:var(--accent)}
.faq-body{padding:0 0 20px;color:var(--text-2);font-size:14.5px;line-height:1.85;border-top:1px solid rgba(150,215,235,.10);padding-top:16px}

/* ---------- cta ---------- */
.cta-panel{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
  padding:36px 38px;
  border-radius:var(--r-lg);
  border:1px solid var(--stroke);
  background:
    linear-gradient(120deg, rgba(31,227,176,.10), rgba(6,11,18,0) 62%),
    var(--bg-panel);
  box-shadow:var(--shadow-card);
}
.cta-panel h2{font-size:clamp(20px,2.2vw,26px)}
.cta-panel p{margin-top:10px;color:var(--text-2);font-size:14.5px;max-width:56ch}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{
  margin-top:88px;
  background:var(--bg-panel);
  border-top:1px solid var(--stroke);
  padding:56px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:36px;
}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:700}
.footer-brand .brand-mark{width:26px;height:26px}
.footer-text{margin-top:14px;font-size:14px;color:var(--text-2);line-height:1.8;max-width:34ch}
.footer-col h3{
  font-size:13px;
  font-weight:600;
  letter-spacing:.1em;
  color:var(--text-3);
  margin-bottom:14px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--text-2);transition:color .18s var(--ease)}
.footer-col a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px}
.footer-col p{font-size:14px;color:var(--text-2);line-height:1.8;margin-bottom:8px}
.footer-bottom{
  margin-top:44px;
  padding:20px 0;
  border-top:1px solid rgba(150,215,235,.10);
  display:flex;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  font-size:12.5px;
  color:var(--text-3);
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav-cards{overflow-x:auto}
  .hero-grid{grid-template-columns:1fr}
  .page-hero{padding:30px}
  .steps-layout{grid-template-columns:1fr}
  .info-card{position:static}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:768px){
  .block{margin-top:56px}
  .site-header{padding:12px 0}
  .nav-shell{gap:10px;padding:9px 12px}
  .brand-text{display:none}
  .brand-text-short{display:inline}
  h1{font-size:30px}
  .prep-grid{grid-template-columns:1fr}
  .stat-bar{grid-template-columns:1fr 1fr}
  .stat-cell{border-right:none;border-bottom:1px solid rgba(150,215,235,.12)}
  .stat-cell:nth-child(odd){border-right:1px solid rgba(150,215,235,.12)}
  .stat-cell:nth-child(3),.stat-cell:nth-child(4){border-bottom:none}
  .cta-panel{padding:28px 24px}
  .btn{height:44px;padding:0 18px;font-size:14px}
  .hero-actions .btn{flex:1 1 auto}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .page-hero{padding:24px 20px}
  .step-item{grid-template-columns:40px 1fr;padding:18px 18px;gap:14px}
  .step-num{width:40px;height:40px;font-size:14px}
  .footer-grid{grid-template-columns:1fr}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-bottom{flex-direction:column;gap:6px}
}

/* roulang page: article */
:root{
  --bg-deep:#060B12;
  --bg-panel:#0C141E;
  --bg-elev:#111B26;
  --glass:rgba(255,255,255,.045);
  --glass-2:rgba(255,255,255,.08);
  --stroke:rgba(150,215,235,.14);
  --stroke-hi:rgba(31,227,176,.45);
  --accent:#1FE3B0;
  --accent-deep:#0FB48C;
  --accent-warm:#FF6A3D;
  --accent-gold:#FFC24B;
  --text:#E9F1F7;
  --text-2:#9DAFBF;
  --text-3:#6B7E8E;
  --r-lg:24px;
  --r-md:20px;
  --r-sm:14px;
  --shadow:0 20px 50px -28px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.06);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;background-color:var(--bg-deep);}
html body{
  margin:0;
  background-color:transparent;
  color:var(--text);
  font-family:'PingFang SC','HarmonyOS Sans SC','Noto Sans SC','Microsoft YaHei',sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
html body::before{
  content:"";
  position:fixed;
  top:0;left:0;right:0;
  height:580px;
  background:radial-gradient(58% 100% at 50% 0%, rgba(31,227,176,.08), transparent 70%);
  pointer-events:none;
  z-index:-1;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- header / nav ---------- */
.site-header{position:sticky;top:0;z-index:60;padding:14px 0;}
.nav-shell{
  display:flex;
  align-items:center;
  gap:16px;
  padding:12px 16px;
  border-radius:var(--r-md);
  background:rgba(12,20,30,.74);
  border:1px solid var(--stroke);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:0 18px 40px -30px rgba(0,0,0,.95), inset 0 1px 0 rgba(255,255,255,.05);
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--text);}
.brand-mark{width:30px;height:30px;color:var(--accent);flex-shrink:0;filter:drop-shadow(0 0 10px rgba(31,227,176,.35));}
.brand-text{font-size:16px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.brand-text-short{display:none;font-size:16px;font-weight:700;white-space:nowrap;}
.nav-cards{
  display:flex;
  align-items:center;
  gap:8px;
  flex:1;
  min-width:0;
  overflow-x:auto;
  scrollbar-width:none;
  scroll-snap-type:x proximity;
  -webkit-overflow-scrolling:touch;
}
.nav-cards::-webkit-scrollbar{display:none;}
.nav-card{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:8px 13px;
  border-radius:999px;
  font-size:13.5px;
  color:var(--text-2);
  border:1px solid transparent;
  white-space:nowrap;
  scroll-snap-align:start;
  transition:color .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.nav-card svg{width:16px;height:16px;flex-shrink:0;}
.nav-card:hover{color:var(--text);background:var(--glass);border-color:var(--stroke);}
.nav-card:active{background:var(--glass-2);}
.nav-card.is-active{
  color:var(--accent);
  border-color:var(--stroke-hi);
  background:rgba(31,227,176,.08);
  box-shadow:0 0 22px -10px rgba(31,227,176,.65);
}
.nav-cta{height:40px;padding:0 18px;font-size:14px;flex-shrink:0;white-space:nowrap;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),filter .18s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-deep));
  color:#04211A;
  box-shadow:0 0 24px -6px rgba(31,227,176,.55);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.05);box-shadow:0 0 34px -4px rgba(31,227,176,.72);}
.btn-primary:active{transform:translateY(0);filter:brightness(.98);box-shadow:0 0 16px -8px rgba(31,227,176,.55);}
.btn-secondary{background:transparent;color:var(--text);border-color:var(--stroke);}
.btn-secondary:hover{background:var(--glass);border-color:var(--stroke-hi);color:var(--accent);transform:translateY(-2px);}
.btn-secondary:active{transform:translateY(0);background:var(--glass-2);}

/* ---------- breadcrumb ---------- */
.crumb-bar{padding:26px 0 0;}
.crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3);}
.crumbs a{color:var(--text-2);transition:color .18s var(--ease);}
.crumbs a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px;}
.crumbs .sep{color:var(--text-3);opacity:.6;}
.crumbs .current{color:var(--text);max-width:20ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- article head ---------- */
.article-head{
  position:relative;
  margin-top:22px;
  padding:40px 40px 36px;
  border-radius:var(--r-lg);
  border:1px solid var(--stroke);
  background:linear-gradient(150deg, rgba(12,20,30,.94), rgba(6,11,18,.86));
  overflow:hidden;
  box-shadow:var(--shadow);
}
.article-head::after{
  content:"";
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  opacity:.16;
  mix-blend-mode:luminosity;
  pointer-events:none;
}
.article-head > *{position:relative;z-index:1;}
.badge-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:16px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;letter-spacing:.04em;
  color:var(--accent);
  background:rgba(31,227,176,.1);
  border:1px solid rgba(31,227,176,.3);
}
.badge-live{color:var(--accent-warm);background:rgba(255,106,61,.1);border-color:rgba(255,106,61,.32);}
.live-dot{width:8px;height:8px;border-radius:50%;background:currentColor;box-shadow:0 0 10px currentColor;animation:pulse 1.8s infinite;}
@keyframes pulse{0%,100%{opacity:1;}50%{opacity:.35;}}
.article-title{
  margin:0;
  font-size:clamp(26px,3.8vw,42px);
  line-height:1.24;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--text);
  max-width:900px;
}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-top:20px;font-size:13px;color:var(--text-3);}
.article-meta .dot{opacity:.5;}
.article-meta span{font-variant-numeric:tabular-nums;}

/* ---------- layout ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:40px;
  align-items:start;
  margin-top:44px;
}
.article-main{min-width:0;max-width:760px;}
.article-body{
  padding:34px 36px;
  border-radius:var(--r-lg);
  border:1px solid var(--stroke);
  background:var(--glass);
  box-shadow:var(--shadow);
}

/* ---------- prose ---------- */
.prose{font-size:16px;line-height:1.9;color:#D6E3EC;overflow-wrap:break-word;}
.prose p{margin:0 0 1.2em;}
.prose h2{
  position:relative;
  margin:2.1em 0 .8em;
  padding-left:16px;
  font-size:clamp(21px,2.4vw,27px);
  line-height:1.35;
  font-weight:700;
  color:var(--text);
}
.prose h2::before{
  content:"";
  position:absolute;left:0;top:.3em;bottom:.3em;
  width:4px;border-radius:2px;
  background:var(--accent);
  box-shadow:0 0 12px -2px rgba(31,227,176,.7);
}
.prose h3{margin:1.6em 0 .6em;font-size:19px;line-height:1.5;font-weight:600;color:var(--text);}
.prose h4{margin:1.4em 0 .5em;font-size:16.5px;font-weight:600;color:var(--text);}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.4em;}
.prose ul{list-style:disc;}
.prose ol{list-style:decimal;}
.prose li{margin:.4em 0;}
.prose ul li::marker{color:var(--accent);}
.prose ol li::marker{color:var(--accent);font-variant-numeric:tabular-nums;}
.prose blockquote{
  margin:1.6em 0;
  padding:16px 22px;
  border-left:3px solid var(--accent);
  border-radius:0 14px 14px 0;
  background:var(--glass-2);
  color:var(--text-2);
}
.prose blockquote p:last-child{margin-bottom:0;}
.prose img{border-radius:14px;margin:24px 0;width:100%;border:1px solid var(--stroke);}
.prose a{color:var(--accent);text-decoration:underline;text-underline-offset:4px;}
.prose a:hover{color:#7BF3D4;}
.prose strong{color:var(--text);font-weight:700;}
.prose table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:14.5px;}
.prose th,.prose td{border:1px solid var(--stroke);padding:10px 14px;text-align:left;vertical-align:top;}
.prose th{background:var(--glass-2);font-weight:600;color:var(--text);}
.prose hr{border:0;border-top:1px solid var(--stroke);margin:2.2em 0;}
.prose code{background:var(--glass-2);padding:2px 6px;border-radius:6px;font-size:.9em;}

/* ---------- empty state ---------- */
.empty-state{
  display:flex;flex-direction:column;align-items:center;text-align:center;
  padding:56px 24px;gap:6px;
}
.empty-state svg{width:40px;height:40px;color:var(--text-3);margin-bottom:10px;}
.empty-title{margin:0;font-size:17px;font-weight:600;color:var(--text);}
.empty-sub{margin:0 0 20px;font-size:14px;color:var(--text-2);max-width:420px;}

/* ---------- sidebar ---------- */
.sidebar{position:sticky;top:104px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  padding:22px;
  border-radius:var(--r-md);
  border:1px solid var(--stroke);
  background:var(--glass);
  box-shadow:var(--shadow);
}
.side-title{
  margin:0 0 14px;
  font-size:14px;
  font-weight:600;
  letter-spacing:.03em;
  color:var(--text);
  display:flex;align-items:center;gap:8px;
}
.side-title::before{content:"";width:4px;height:14px;border-radius:2px;background:var(--accent);}
.side-links{list-style:none;}
.side-links li + li{border-top:1px solid var(--stroke);}
.side-links a{
  display:flex;align-items:center;gap:8px;
  padding:11px 0;
  font-size:14px;
  color:var(--text-2);
  transition:color .18s var(--ease),padding-left .18s var(--ease);
}
.side-links a::before{content:"→";color:var(--accent);font-size:12px;opacity:.7;}
.side-links a:hover{color:var(--accent);padding-left:4px;}
.side-card .btn{width:100%;margin-top:18px;height:44px;font-size:14px;}
.side-note{font-size:12.5px;color:var(--text-3);line-height:1.75;margin:14px 0 0;}

/* ---------- return bar ---------- */
.return-bar{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:30px;}

/* ---------- recommend ---------- */
.rec-section{margin-top:64px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-bottom:24px;}
.section-title{margin:0;font-size:clamp(20px,2.4vw,26px);font-weight:700;line-height:1.35;color:var(--text);}
.section-sub{margin:6px 0 0;font-size:14px;color:var(--text-2);}
.rec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.rec-card{
  display:flex;flex-direction:column;
  border-radius:var(--r-md);
  border:1px solid var(--stroke);
  background:var(--glass);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.rec-card:hover{transform:translateY(-3px);border-color:var(--stroke-hi);box-shadow:0 24px 48px -28px rgba(31,227,176,.45);}
.rec-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--bg-elev);border-bottom:1px solid var(--stroke);}
.rec-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease);}
.rec-card:hover .rec-thumb img{transform:scale(1.04);}
.rec-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px;flex:1;}
.rec-tag{font-size:12px;letter-spacing:.04em;color:var(--accent);}
.rec-name{margin:0;font-size:16px;font-weight:600;line-height:1.5;color:var(--text);}
.rec-desc{margin:0;font-size:13.5px;line-height:1.7;color:var(--text-2);}
.rec-more{margin-top:auto;padding-top:10px;font-size:13px;color:var(--text-3);transition:color .18s var(--ease);}
.rec-card:hover .rec-more{color:var(--accent);}

/* ---------- cta ---------- */
.cta-band{margin-top:72px;}
.cta-panel{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  padding:38px 40px;
  border-radius:var(--r-lg);
  border:1px solid var(--stroke);
  background:linear-gradient(120deg, rgba(31,227,176,.13), rgba(12,20,30,.92) 55%);
  box-shadow:var(--shadow);
}
.cta-title{margin:0;font-size:clamp(20px,2.4vw,26px);font-weight:700;line-height:1.4;color:var(--text);}
.cta-text{margin:8px 0 0;font-size:14px;color:var(--text-2);max-width:620px;}

/* ---------- footer ---------- */
.site-footer{margin-top:88px;background:var(--bg-panel);border-top:1px solid var(--stroke);padding-top:56px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;color:var(--text);}
.footer-brand .brand-mark{width:26px;height:26px;color:var(--accent);}
.footer-text{margin:14px 0 0;font-size:13.5px;line-height:1.8;color:var(--text-2);max-width:300px;}
.footer-col h3{margin:0 0 14px;font-size:14px;font-weight:600;color:var(--text);letter-spacing:.02em;}
.footer-col ul{list-style:none;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:13.5px;color:var(--text-2);transition:color .18s var(--ease);}
.footer-col a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px;}
.footer-col p{margin:0 0 10px;font-size:13px;line-height:1.75;color:var(--text-2);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:44px;padding:20px 0 24px;
  border-top:1px solid var(--stroke);
  font-size:12.5px;color:var(--text-3);
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .article-main{max-width:none;}
  .sidebar{position:static;}
  .rec-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .article-head{padding:34px 28px 30px;}
  .article-body{padding:28px 26px;}
}
@media (max-width:768px){
  .nav-shell{flex-wrap:nowrap;gap:12px;padding:10px 14px;}
  .nav-cards{gap:6px;}
  .nav-card{padding:7px 11px;font-size:13px;}
  .nav-cta{height:36px;padding:0 14px;font-size:13px;}
  .cta-panel{padding:28px 24px;}
  .site-footer{margin-top:56px;}
}
@media (max-width:640px){
  .container{padding:0 20px;}
  .brand-text{display:none;}
  .brand-text-short{display:inline;}
  .brand-mark{width:26px;height:26px;}
  .article-head{padding:26px 20px 24px;border-radius:var(--r-md);}
  .article-title{font-size:clamp(24px,6.4vw,30px);}
  .article-body{padding:22px 18px;border-radius:var(--r-md);}
  .rec-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .crumbs .current{max-width:14ch;}
  .btn{height:44px;padding:0 20px;font-size:14px;}
  .cta-panel{padding:24px 20px;}
}

/* roulang page: category3 */
:root{
    --bg-deep:#060B12;
    --bg-panel:#0C141E;
    --bg-elev:#111B26;
    --glass:rgba(255,255,255,.045);
    --glass-2:rgba(255,255,255,.08);
    --stroke:rgba(150,215,235,.14);
    --stroke-hi:rgba(31,227,176,.45);
    --accent:#1FE3B0;
    --accent-deep:#0FB48C;
    --accent-warm:#FF6A3D;
    --accent-gold:#FFC24B;
    --text:#E9F1F7;
    --text-2:#9DAFBF;
    --text-3:#6B7E8E;
    --radius-lg:24px;
    --radius:20px;
    --radius-sm:14px;
    --shadow-card:0 20px 50px -28px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.06);
    --ease:cubic-bezier(.2,.7,.3,1);
    --container:1200px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--bg-deep);
    color:var(--text);
    font-family:'PingFang SC','HarmonyOS Sans SC','Noto Sans SC','Microsoft YaHei',sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  body::before{
    content:"";
    position:fixed;
    inset:-20% 0 auto 0;
    height:520px;
    background:radial-gradient(ellipse at 50% 0%,rgba(31,227,176,.08),transparent 68%);
    pointer-events:none;
    z-index:0;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button{font-family:inherit}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0}
  ul,ol{padding:0;list-style:none}
  :focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;position:relative;z-index:1}
  @media (min-width:640px){.container{padding:0 24px}}
  @media (min-width:1024px){.container{padding:0 32px}}

  .num{font-variant-numeric:tabular-nums}

  /* ---------- Header / Nav ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    padding:14px 0 6px;
    transition:padding .2s var(--ease);
  }
  .nav-shell{
    display:flex;
    align-items:center;
    gap:14px;
    padding:10px 14px;
    border-radius:var(--radius);
    border:1px solid var(--stroke);
    background:rgba(12,20,30,.74);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
  }
  .site-header.is-scrolled .nav-shell{
    border-color:rgba(150,215,235,.22);
    box-shadow:0 18px 40px -26px rgba(0,0,0,.95);
    background:rgba(9,16,24,.88);
  }
  .brand{
    display:flex;
    align-items:center;
    gap:10px;
    flex:0 0 auto;
    padding:4px 6px;
    border-radius:12px;
    transition:background .18s var(--ease);
  }
  .brand:hover{background:var(--glass)}
  .brand-mark{
    width:28px;height:28px;
    color:var(--accent);
    filter:drop-shadow(0 0 8px rgba(31,227,176,.45));
    flex:0 0 auto;
  }
  .brand-text{
    font-size:15px;
    font-weight:700;
    letter-spacing:.01em;
    white-space:nowrap;
  }
  .brand-text-short{display:none;font-size:15px;font-weight:700;white-space:nowrap}
  .nav-cards{
    display:flex;
    align-items:center;
    gap:8px;
    flex:1 1 auto;
    min-width:0;
    overflow-x:auto;
    scroll-snap-type:x mandatory;
    scrollbar-width:none;
    -ms-overflow-style:none;
    padding:2px;
  }
  .nav-cards::-webkit-scrollbar{display:none}
  .nav-card{
    display:inline-flex;
    align-items:center;
    gap:7px;
    padding:8px 12px;
    border-radius:12px;
    border:1px solid transparent;
    color:var(--text-2);
    font-size:13.5px;
    line-height:1.2;
    white-space:nowrap;
    scroll-snap-align:start;
    transition:color .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
  }
  .nav-card svg{width:16px;height:16px;flex:0 0 auto}
  .nav-card:hover{color:var(--text);background:var(--glass);border-color:var(--stroke)}
  .nav-card:active{background:var(--glass-2)}
  .nav-card.is-active{
    color:var(--accent);
    border-color:var(--stroke-hi);
    background:rgba(31,227,176,.08);
    box-shadow:0 0 20px -10px rgba(31,227,176,.75);
  }
  .nav-cta{flex:0 0 auto}

  @media (max-width:1023px){
    .nav-shell{flex-wrap:wrap;row-gap:10px}
    .nav-cards{order:3;flex-basis:100%;width:100%}
    .nav-cta{margin-left:auto}
  }
  @media (max-width:639px){
    .brand-text{display:none}
    .brand-text-short{display:inline}
    .nav-shell{padding:10px 12px;gap:10px}
    .btn-primary.small{padding:9px 14px;font-size:13px}
  }

  /* ---------- Buttons ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:48px;
    padding:0 24px;
    border-radius:999px;
    border:1px solid transparent;
    font-size:15px;
    font-weight:600;
    letter-spacing:.01em;
    cursor:pointer;
    transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),filter .18s var(--ease),color .18s var(--ease);
  }
  .btn-primary{
    background:linear-gradient(135deg,var(--accent),var(--accent-deep));
    color:#04120E;
    box-shadow:0 0 24px -6px rgba(31,227,176,.55);
  }
  .btn-primary:hover{
    transform:translateY(-2px);
    filter:brightness(1.05);
    box-shadow:0 0 32px -4px rgba(31,227,176,.7);
  }
  .btn-primary:active{transform:translateY(0);box-shadow:0 0 16px -8px rgba(31,227,176,.6)}
  .btn-ghost{
    background:transparent;
    border-color:var(--stroke);
    color:var(--text);
  }
  .btn-ghost:hover{
    background:var(--glass);
    border-color:var(--stroke-hi);
    transform:translateY(-2px);
  }
  .btn-ghost:active{transform:translateY(0);background:var(--glass-2)}
  .btn.small{height:40px;padding:0 18px;font-size:13.5px}
  @media (max-width:639px){
    .btn{height:44px;padding:0 20px;font-size:14.5px}
  }

  /* ---------- Breadcrumb ---------- */
  .crumb{
    display:flex;
    align-items:center;
    flex-wrap:wrap;
    gap:8px;
    font-size:13px;
    color:var(--text-3);
    padding:18px 0 0;
  }
  .crumb a{color:var(--text-2);transition:color .18s var(--ease)}
  .crumb a:hover{color:var(--accent)}
  .crumb .sep{color:var(--text-3);opacity:.6}
  .crumb .now{color:var(--text)}

  /* ---------- Hero ---------- */
  .page-hero{
    position:relative;
    margin-top:20px;
    border-radius:var(--radius-lg);
    border:1px solid var(--stroke);
    overflow:hidden;
    box-shadow:var(--shadow-card);
    background-image:linear-gradient(155deg,rgba(6,11,18,.88),rgba(6,11,18,.965)),url('/assets/images/backpic/back-2.png');
    background-size:cover;
    background-position:center;
  }
  .hero-inner{
    display:grid;
    grid-template-columns:1fr;
    gap:28px;
    padding:28px 22px;
  }
  @media (min-width:640px){.hero-inner{padding:36px 32px}}
  @media (min-width:1024px){
    .hero-inner{grid-template-columns:7fr 5fr;gap:36px;padding:44px 40px}
  }
  .badge{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:6px 14px;
    border-radius:999px;
    background:var(--glass);
    border:1px solid var(--stroke);
    font-size:12px;
    letter-spacing:.04em;
    color:var(--text-2);
  }
  .badge .dot{
    width:8px;height:8px;border-radius:50%;
    background:var(--accent);
    box-shadow:0 0 10px rgba(31,227,176,.85);
    animation:pulse 2.4s ease-in-out infinite;
  }
  @keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(.82)}}
  .hero-title{
    font-size:clamp(30px,4.4vw,52px);
    line-height:1.15;
    font-weight:800;
    letter-spacing:-.01em;
    margin-top:18px;
  }
  .hero-title em{font-style:normal;color:var(--accent)}
  .hero-sub{
    margin-top:16px;
    color:var(--text-2);
    font-size:16.5px;
    line-height:1.8;
    max-width:34em;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

  .hero-figure{
    position:relative;
    border-radius:var(--radius);
    overflow:hidden;
    border:1px solid var(--stroke);
    background:var(--bg-elev);
    aspect-ratio:16/11;
    box-shadow:var(--shadow-card);
  }
  .hero-figure img{width:100%;height:100%;object-fit:cover;opacity:.82}
  .hero-figure::after{
    content:"";
    position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(6,11,18,.15),rgba(6,11,18,.82));
  }
  .figure-tag{
    position:absolute;
    top:14px;left:14px;
    z-index:2;
    padding:5px 12px;
    border-radius:999px;
    font-size:12px;
    letter-spacing:.04em;
    color:#04120E;
    background:linear-gradient(135deg,var(--accent),var(--accent-deep));
    font-weight:700;
  }
  .figure-note{
    position:absolute;
    left:16px;right:16px;bottom:16px;
    z-index:2;
    font-size:13.5px;
    line-height:1.7;
    color:var(--text);
  }
  .figure-note span{color:var(--accent);font-weight:600}

  /* ---------- Pill tabs ---------- */
  .pill-row{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    margin-top:28px;
    padding-top:24px;
    border-top:1px solid var(--stroke);
  }
  .pill{
    display:inline-flex;
    align-items:center;
    gap:7px;
    padding:9px 16px;
    border-radius:999px;
    border:1px solid var(--stroke);
    background:var(--glass);
    font-size:13.5px;
    color:var(--text-2);
    transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease),transform .18s var(--ease);
  }
  .pill:hover{
    color:var(--text);
    border-color:var(--stroke-hi);
    background:var(--glass-2);
    transform:translateY(-2px);
  }
  .pill:active{transform:translateY(0)}
  .pill.is-current{
    color:var(--accent);
    border-color:var(--stroke-hi);
    background:rgba(31,227,176,.1);
    font-weight:600;
    box-shadow:0 0 22px -12px rgba(31,227,176,.9);
  }

  /* ---------- Sections ---------- */
  .section{padding:56px 0 0}
  @media (min-width:1024px){.section{padding:88px 0 0}}
  .section-head{max-width:760px;margin-bottom:30px}
  .eyebrow{
    font-size:12px;
    letter-spacing:.14em;
    color:var(--accent);
    font-weight:600;
    margin-bottom:12px;
  }
  .h2{
    font-size:clamp(22px,2.6vw,32px);
    line-height:1.28;
    font-weight:700;
    letter-spacing:-.005em;
  }
  .section-desc{
    margin-top:14px;
    color:var(--text-2);
    font-size:15.5px;
    line-height:1.85;
  }

  /* ---------- Compare ---------- */
  .compare{
    display:grid;
    grid-template-columns:1fr;
    gap:20px;
  }
  @media (min-width:900px){.compare{grid-template-columns:1fr 1fr;gap:24px}}
  .compare-col{
    border-radius:var(--radius);
    padding:26px 22px;
    background:var(--bg-panel);
    box-shadow:var(--shadow-card);
    transition:transform .2s var(--ease),box-shadow .2s var(--ease);
  }
  @media (min-width:640px){.compare-col{padding:30px 28px}}
  .compare-col:hover{transform:translateY(-2px)}
  .compare-col.risk{border:1px solid rgba(255,106,61,.42);background:linear-gradient(180deg,rgba(255,106,61,.07),rgba(12,20,30,.9) 42%)}
  .compare-col.safe{border:1px solid rgba(31,227,176,.4);background:linear-gradient(180deg,rgba(31,227,176,.07),rgba(12,20,30,.9) 42%)}
  .col-head{display:flex;align-items:center;gap:12px;margin-bottom:8px}
  .col-head .ico{
    width:38px;height:38px;border-radius:12px;display:grid;place-items:center;flex:0 0 auto;
  }
  .compare-col.risk .ico{background:rgba(255,106,61,.14);color:var(--accent-warm);border:1px solid rgba(255,106,61,.32)}
  .compare-col.safe .ico{background:rgba(31,227,176,.12);color:var(--accent);border:1px solid rgba(31,227,176,.3)}
  .col-head h3{font-size:19px;font-weight:700}
  .col-lead{color:var(--text-2);font-size:14.5px;line-height:1.8;margin-bottom:18px}
  .cmp-list{display:flex;flex-direction:column;gap:14px}
  .cmp-item{display:flex;gap:12px;padding-top:14px;border-top:1px solid var(--stroke)}
  .cmp-list .cmp-item:first-child{border-top:0;padding-top:0}
  .cmp-item .mark{
    width:20px;height:20px;border-radius:50%;flex:0 0 auto;display:grid;place-items:center;margin-top:4px;
    font-size:11px;font-weight:700;
  }
  .compare-col.risk .mark{background:rgba(255,106,61,.16);color:var(--accent-warm);box-shadow:inset 0 0 0 1px rgba(255,106,61,.4)}
  .compare-col.safe .mark{background:rgba(31,227,176,.14);color:var(--accent);box-shadow:inset 0 0 0 1px rgba(31,227,176,.4)}
  .cmp-item strong{display:block;font-size:15.5px;font-weight:600;margin-bottom:3px}
  .cmp-item p{color:var(--text-2);font-size:14px;line-height:1.78}

  /* ---------- Track ---------- */
  .track{
    display:grid;
    grid-template-columns:1fr;
    gap:0;
    border-radius:var(--radius);
    border:1px solid var(--stroke);
    background:var(--bg-panel);
    box-shadow:var(--shadow-card);
    overflow:hidden;
  }
  @media (min-width:860px){.track{grid-template-columns:repeat(4,1fr)}}
  .track-step{
    position:relative;
    padding:26px 22px 28px;
    border-top:1px solid var(--stroke);
    transition:background .2s var(--ease);
  }
  .track-step:first-child{border-top:0}
  .track-step:hover{background:var(--glass)}
  @media (min-width:860px){
    .track-step{border-top:0;border-left:1px solid var(--stroke);padding:32px 24px 34px}
    .track-step:first-child{border-left:0}
  }
  .track-num{
    display:inline-grid;
    place-items:center;
    width:44px;height:44px;
    border-radius:50%;
    border:1.5px solid rgba(31,227,176,.5);
    color:var(--accent);
    font-weight:700;
    font-size:15px;
    font-variant-numeric:tabular-nums;
    margin-bottom:16px;
    background:rgba(31,227,176,.06);
  }
  .track-step h3{font-size:16.5px;font-weight:700;margin-bottom:8px}
  .track-step p{color:var(--text-2);font-size:14px;line-height:1.8}
  .track-step .tick{
    display:inline-block;margin-top:14px;font-size:12px;letter-spacing:.04em;
    color:var(--text-3);border:1px solid var(--stroke);border-radius:999px;padding:3px 10px;
  }

  /* ---------- Metrics ---------- */
  .metrics{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:18px;
    border-radius:var(--radius);
    border:1px solid var(--stroke);
    background:var(--bg-panel);
    padding:24px 20px;
    box-shadow:var(--shadow-card);
  }
  @media (min-width:860px){
    .metrics{grid-template-columns:repeat(4,1fr);padding:30px 28px;gap:0}
    .metric + .metric{border-left:1px solid var(--stroke);padding-left:26px}
  }
  .metric-val{
    font-size:clamp(24px,3.4vw,32px);
    font-weight:800;
    color:var(--accent-gold);
    font-variant-numeric:tabular-nums;
    line-height:1.2;
    text-shadow:0 0 22px rgba(255,194,75,.22);
  }
  .metric-val small{font-size:14px;font-weight:600;margin-left:3px;color:var(--text-2);text-shadow:none}
  .metric-label{margin-top:8px;font-size:13.5px;color:var(--text-2)}
  .metric-note{margin-top:4px;font-size:12.5px;color:var(--text-3)}

  /* ---------- QA grid ---------- */
  .qa-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:18px;
  }
  @media (min-width:820px){.qa-grid{grid-template-columns:1fr 1fr;gap:20px}}
  .qa-card{
    border-radius:var(--radius);
    border:1px solid var(--stroke);
    background:var(--bg-elev);
    padding:24px 22px;
    transition:border-color .18s var(--ease),transform .18s var(--ease),background .18s var(--ease);
  }
  .qa-card:hover{border-color:var(--stroke-hi);transform:translateY(-2px);background:var(--bg-panel)}
  .qa-card h3{
    font-size:16px;
    font-weight:700;
    line-height:1.55;
    display:flex;
    gap:10px;
    align-items:flex-start;
  }
  .qa-card h3 .q{
    flex:0 0 auto;
    width:22px;height:22px;
    border-radius:7px;
    display:grid;place-items:center;
    font-size:12px;font-weight:700;
    color:var(--accent);
    background:rgba(31,227,176,.12);
    border:1px solid rgba(31,227,176,.3);
    margin-top:3px;
  }
  .qa-card p{margin-top:12px;color:var(--text-2);font-size:14.5px;line-height:1.85;padding-left:32px}

  /* ---------- CTA ---------- */
  .cta-panel{
    margin-top:56px;
    border-radius:var(--radius-lg);
    border:1px solid var(--stroke);
    background:
      radial-gradient(circle at 88% 20%,rgba(31,227,176,.12),transparent 58%),
      var(--bg-panel);
    box-shadow:var(--shadow-card);
    padding:32px 22px;
    display:flex;
    flex-direction:column;
    gap:22px;
  }
  @media (min-width:640px){.cta-panel{padding:40px 36px}}
  @media (min-width:960px){
    .cta-panel{flex-direction:row;align-items:center;justify-content:space-between;gap:40px;padding:44px 44px}
  }
  .cta-panel h2{font-size:clamp(21px,2.4vw,28px);line-height:1.32;font-weight:700}
  .cta-panel p{margin-top:10px;color:var(--text-2);font-size:15px;line-height:1.8;max-width:52em}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto}

  /* ---------- Footer ---------- */
  .site-footer{
    margin-top:64px;
    background:var(--bg-panel);
    border-top:1px solid var(--stroke);
    padding:52px 0 0;
  }
  @media (min-width:1024px){.site-footer{margin-top:88px;padding:64px 0 0}}
  .footer-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:34px;
  }
  @media (min-width:720px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
  @media (min-width:1024px){.footer-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 .brand-mark{width:26px;height:26px}
  .footer-brand strong{font-size:15.5px;font-weight:700}
  .footer-text{color:var(--text-2);font-size:14px;line-height:1.85;max-width:30em}
  .footer-col h3{font-size:13px;letter-spacing:.06em;color:var(--text);font-weight:700;margin-bottom:14px}
  .footer-col ul{display:flex;flex-direction:column;gap:10px}
  .footer-col a{color:var(--text-2);font-size:14px;transition:color .18s var(--ease)}
  .footer-col a:hover{color:var(--accent)}
  .footer-col p{color:var(--text-2);font-size:13.5px;line-height:1.8;margin-bottom:8px}
  .footer-bottom{
    margin-top:40px;
    border-top:1px solid var(--stroke);
    padding:20px 0 24px;
    display:flex;
    flex-direction:column;
    gap:8px;
    font-size:12.5px;
    color:var(--text-3);
  }
  @media (min-width:720px){
    .footer-bottom{flex-direction:row;align-items:center;justify-content:space-between;gap:20px}
  }

  @media (max-width:520px){
    .hero-title{font-size:30px}
    .track-step{padding:22px 18px 24px}
    .compare-col{padding:24px 20px}
    .metrics{padding:20px 16px}
  }

/* roulang page: category2 */
:root{
    --bg-deep:#060B12;
    --bg-panel:#0C141E;
    --bg-elev:#111B26;
    --glass:rgba(255,255,255,.045);
    --glass-2:rgba(255,255,255,.08);
    --stroke:rgba(150,215,235,.14);
    --stroke-hi:rgba(31,227,176,.45);
    --accent:#1FE3B0;
    --accent-deep:#0FB48C;
    --accent-warm:#FF6A3D;
    --accent-gold:#FFC24B;
    --text:#E9F1F7;
    --text-2:#9DAFBF;
    --text-3:#6B7E8E;
    --r-lg:24px;
    --r-md:20px;
    --r-sm:14px;
    --shadow-card:0 20px 50px -28px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.06);
    --ease:cubic-bezier(.2,.7,.3,1);
  }

  *{box-sizing:border-box;}

  html body{
    margin:0;
    padding:0;
    background:var(--bg-deep);
    color:var(--text);
    font-family:'PingFang SC','HarmonyOS Sans SC','Noto Sans SC','Microsoft YaHei',sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }

  html body::before{
    content:"";
    position:fixed;
    inset:0 0 auto 0;
    height:620px;
    background:radial-gradient(60% 100% at 50% 0%, rgba(31,227,176,.08), rgba(31,227,176,0) 70%);
    pointer-events:none;
    z-index:0;
  }

  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  :focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;}

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding:0 24px;
    position:relative;
    z-index:1;
  }

  /* ============ 导航 ============ */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    padding:14px 0 10px;
  }
  .nav-shell{
    display:flex;
    align-items:center;
    gap:16px;
    padding:10px 14px;
    border-radius:22px;
    background:rgba(12,20,30,.72);
    border:1px solid transparent;
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    transition:border-color .18s var(--ease), box-shadow .18s var(--ease), background .18s var(--ease);
  }
  .nav-shell.is-scrolled{
    border-color:var(--stroke);
    box-shadow:0 18px 40px -30px rgba(0,0,0,.95);
    background:rgba(9,15,23,.9);
  }
  .brand{
    display:inline-flex;
    align-items:center;
    gap:9px;
    flex-shrink:0;
    color:var(--accent);
    transition:opacity .18s var(--ease);
  }
  .brand:hover{opacity:.86;}
  .brand-mark{width:26px;height:26px;flex-shrink:0;}
  .brand-text{
    font-size:15px;
    font-weight:700;
    letter-spacing:.01em;
    color:var(--text);
    white-space:nowrap;
  }
  .brand-text-short{display:none;font-size:15px;font-weight:700;color:var(--text);white-space:nowrap;}

  .nav-cards{
    display:flex;
    align-items:center;
    gap:8px;
    flex:1 1 auto;
    min-width:0;
    overflow-x:auto;
    scrollbar-width:none;
    scroll-snap-type:x mandatory;
    padding:2px;
  }
  .nav-cards::-webkit-scrollbar{display:none;}
  .nav-card{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:8px 12px;
    border-radius:var(--r-sm);
    border:1px solid transparent;
    color:var(--text-2);
    font-size:13.5px;
    line-height:1.2;
    white-space:nowrap;
    scroll-snap-align:start;
    transition:color .18s var(--ease), background .18s var(--ease), border-color .18s var(--ease);
  }
  .nav-card svg{width:16px;height:16px;flex-shrink:0;}
  .nav-card:hover{color:var(--text);background:var(--glass);border-color:var(--stroke);}
  .nav-card:active{background:var(--glass-2);}
  .nav-card.is-active{
    color:var(--accent);
    border-color:var(--stroke-hi);
    background:rgba(31,227,176,.09);
    box-shadow:0 0 22px -12px rgba(31,227,176,.9);
  }
  .nav-cta{
    flex-shrink:0;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    height:38px;
    padding:0 18px;
    border-radius:999px;
    font-size:13.5px;
    font-weight:600;
    color:#04120E;
    background:linear-gradient(135deg,var(--accent),var(--accent-deep));
    box-shadow:0 0 24px -14px rgba(31,227,176,.9);
    white-space:nowrap;
    transition:transform .18s var(--ease), box-shadow .18s var(--ease), filter .18s var(--ease);
  }
  .nav-cta:hover{transform:translateY(-2px);box-shadow:0 0 28px -8px rgba(31,227,176,.75);filter:brightness(1.05);}
  .nav-cta:active{transform:translateY(0);box-shadow:0 0 14px -10px rgba(31,227,176,.8);}

  /* ============ 通用按钮 / 徽章 ============ */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:48px;
    padding:0 26px;
    border-radius:999px;
    font-size:15px;
    font-weight:600;
    border:1px solid transparent;
    cursor:pointer;
    transition:transform .18s var(--ease), box-shadow .18s var(--ease), background .18s var(--ease), border-color .18s var(--ease), color .18s var(--ease), filter .18s var(--ease);
  }
  .btn-primary{
    color:#04120E;
    background:linear-gradient(135deg,var(--accent),var(--accent-deep));
    box-shadow:0 0 24px -12px rgba(31,227,176,.85);
  }
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 30px -6px rgba(31,227,176,.6);filter:brightness(1.05);}
  .btn-primary:active{transform:translateY(0);box-shadow:0 0 16px -10px rgba(31,227,176,.8);}
  .btn-ghost{
    background:transparent;
    border-color:var(--stroke);
    color:var(--text);
  }
  .btn-ghost:hover{background:var(--glass-2);border-color:var(--stroke-hi);color:var(--accent);transform:translateY(-2px);}
  .btn-ghost:active{transform:translateY(0);background:var(--glass);}

  .badge{
    display:inline-flex;
    align-items:center;
    gap:7px;
    padding:5px 13px;
    border-radius:999px;
    border:1px solid var(--stroke);
    background:var(--glass);
    font-size:12px;
    letter-spacing:.04em;
    color:var(--text-2);
  }
  .dot{
    width:8px;height:8px;border-radius:50%;
    background:var(--accent);
    box-shadow:0 0 0 4px rgba(31,227,176,.14);
    animation:pulse 2.4s var(--ease) infinite;
  }
  @keyframes pulse{
    0%,100%{opacity:1;transform:scale(1);}
    50%{opacity:.5;transform:scale(.82);}
  }

  /* ============ 分类页 Hero ============ */
  .page-hero{
    position:relative;
    overflow:hidden;
    padding:26px 0 8px;
  }
  .page-hero::before{
    content:"";
    position:absolute;
    inset:0;
    background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    opacity:.3;
    z-index:0;
  }
  .page-hero::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(180deg, rgba(6,11,18,.7) 0%, rgba(6,11,18,.9) 62%, rgba(6,11,18,.98) 100%);
    z-index:0;
  }
  .page-hero .container{position:relative;z-index:2;}

  .breadcrumb{
    display:flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:var(--text-3);
    padding:18px 0 22px;
    flex-wrap:wrap;
  }
  .breadcrumb a{transition:color .18s var(--ease);}
  .breadcrumb a:hover{color:var(--accent);}
  .breadcrumb .sep{color:var(--text-3);opacity:.6;}
  .breadcrumb [aria-current]{color:var(--text-2);}

  .page-title{
    font-size:clamp(30px,4.4vw,52px);
    line-height:1.15;
    font-weight:800;
    letter-spacing:-.01em;
    margin:18px 0 14px;
    max-width:16em;
  }
  .page-lead{
    font-size:16px;
    color:var(--text-2);
    max-width:34em;
    line-height:1.8;
  }

  .pill-row{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    margin-top:26px;
  }
  .pill{
    display:inline-flex;
    align-items:center;
    padding:8px 16px;
    border-radius:999px;
    border:1px solid var(--stroke);
    background:var(--glass);
    color:var(--text-2);
    font-size:13.5px;
    transition:color .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease), transform .18s var(--ease);
  }
  .pill:hover{color:var(--text);border-color:var(--stroke-hi);background:var(--glass-2);transform:translateY(-1px);}
  .pill:active{transform:translateY(0);}
  .pill.is-current{
    color:#04120E;
    background:linear-gradient(135deg,var(--accent),var(--accent-deep));
    border-color:transparent;
    font-weight:600;
  }

  .hero-metrics{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:0;
    margin-top:34px;
    border-radius:var(--r-md);
    border:1px solid var(--stroke);
    background:var(--glass);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    overflow:hidden;
  }
  .hero-metric{
    padding:18px 22px;
    border-left:1px solid var(--stroke);
  }
  .hero-metric:first-child{border-left:0;}
  .hero-metric strong{
    display:block;
    font-size:20px;
    font-weight:700;
    color:var(--accent-gold);
    font-variant-numeric:tabular-nums;
    letter-spacing:.01em;
  }
  .hero-metric span{
    display:block;
    font-size:12.5px;
    color:var(--text-3);
    margin-top:2px;
  }

  /* ============ 板块通用 ============ */
  .section{padding:64px 0 0;}
  .section-head{margin-bottom:28px;max-width:720px;}
  .section-head h2{
    font-size:clamp(22px,2.6vw,32px);
    line-height:1.28;
    font-weight:700;
    letter-spacing:-.005em;
  }
  .section-head p{
    margin-top:10px;
    color:var(--text-2);
    font-size:15px;
  }

  /* ============ 适配网格 ============ */
  .fit-grid{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:20px;
  }
  .fit-card{
    display:flex;
    gap:16px;
    padding:24px;
    border-radius:var(--r-md);
    border:1px solid var(--stroke);
    background:var(--bg-panel);
    box-shadow:var(--shadow-card);
    transition:border-color .18s var(--ease), transform .18s var(--ease), background .18s var(--ease);
  }
  .fit-card:hover{
    border-color:var(--stroke-hi);
    transform:translateY(-2px);
    background:var(--bg-elev);
  }
  .fit-icon{
    flex-shrink:0;
    width:44px;height:44px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    border-radius:12px;
    border:1px solid var(--stroke);
    background:rgba(31,227,176,.07);
    color:var(--accent);
  }
  .fit-icon svg{width:22px;height:22px;}
  .fit-card h3{
    font-size:19px;
    font-weight:600;
    line-height:1.4;
    margin-bottom:6px;
  }
  .fit-card p{
    font-size:14.5px;
    color:var(--text-2);
    line-height:1.8;
  }
  .fit-meta{
    display:inline-block;
    margin-top:10px;
    font-size:12px;
    letter-spacing:.04em;
    color:var(--accent);
    border:1px solid var(--stroke);
    border-radius:999px;
    padding:2px 10px;
    font-variant-numeric:tabular-nums;
  }

  /* ============ 对照说明 ============ */
  .compare-list{
    border-radius:var(--r-md);
    border:1px solid var(--stroke);
    background:var(--bg-panel);
    overflow:hidden;
    box-shadow:var(--shadow-card);
  }
  .compare-row{
    display:grid;
    grid-template-columns:190px minmax(0,1fr);
    gap:24px;
    padding:22px 26px;
    border-top:1px dashed rgba(150,215,235,.16);
    transition:background .18s var(--ease);
  }
  .compare-row:first-child{border-top:0;}
  .compare-row:hover{background:rgba(255,255,255,.025);}
  .compare-label{
    display:flex;
    align-items:center;
    gap:9px;
    font-size:14.5px;
    font-weight:600;
    color:var(--text);
  }
  .compare-label::before{
    content:"";
    width:6px;height:6px;
    border-radius:50%;
    background:var(--accent);
    flex-shrink:0;
  }
  .compare-desc{
    font-size:14.5px;
    color:var(--text-2);
    line-height:1.85;
  }
  .compare-desc b{color:var(--text);font-weight:600;font-variant-numeric:tabular-nums;}

  /* ============ 图文自检块 ============ */
  .check-panel{
    display:grid;
    grid-template-columns:minmax(0,5fr) minmax(0,7fr);
    gap:32px;
    align-items:center;
    padding:32px;
    border-radius:var(--r-lg);
    border:1px solid var(--stroke);
    background:var(--bg-panel);
    box-shadow:var(--shadow-card);
  }
  .check-figure{
    position:relative;
    border-radius:var(--r-sm);
    overflow:hidden;
    border:1px solid var(--stroke);
    aspect-ratio:16/10;
    background:var(--bg-elev);
  }
  .check-figure img{
    width:100%;height:100%;
    object-fit:cover;
    transition:transform .3s var(--ease);
  }
  .check-panel:hover .check-figure img{transform:scale(1.03);}
  .check-figure::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(180deg, rgba(6,11,18,.15), rgba(6,11,18,.72));
  }
  .check-figure figcaption{
    position:absolute;
    left:16px;bottom:14px;
    z-index:2;
    font-size:12.5px;
    color:var(--text);
    letter-spacing:.02em;
  }
  .check-body h2{
    font-size:clamp(22px,2.6vw,30px);
    line-height:1.3;
    font-weight:700;
    margin-bottom:14px;
  }
  .check-steps{
    display:flex;
    flex-direction:column;
    gap:14px;
    margin-top:20px;
  }
  .check-steps li{
    display:flex;
    gap:12px;
    font-size:14.5px;
    color:var(--text-2);
    line-height:1.8;
  }
  .check-steps .num{
    flex-shrink:0;
    width:24px;height:24px;
    border-radius:50%;
    border:1px solid var(--stroke-hi);
    color:var(--accent);
    font-size:12.5px;
    font-weight:600;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    font-variant-numeric:tabular-nums;
    margin-top:3px;
  }

  /* ============ FAQ ============ */
  .faq-list{max-width:820px;display:flex;flex-direction:column;gap:12px;}
  .faq-item{
    border-radius:var(--r-sm);
    border:1px solid var(--stroke);
    background:var(--glass);
    transition:border-color .18s var(--ease), background .18s var(--ease);
  }
  .faq-item:hover{border-color:var(--stroke-hi);}
  .faq-item[open]{background:var(--bg-elev);border-color:rgba(150,215,235,.24);}
  .faq-item summary{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    padding:16px 20px;
    cursor:pointer;
    font-size:15.5px;
    font-weight:600;
    color:var(--text);
    list-style:none;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{
    content:"";
    width:9px;height:9px;
    flex-shrink:0;
    border-right:2px solid var(--text-2);
    border-bottom:2px solid var(--text-2);
    transform:rotate(45deg);
    transition:transform .2s var(--ease), border-color .2s var(--ease);
  }
  .faq-item[open] summary::after{transform:rotate(-135deg);border-color:var(--accent);}
  .faq-answer{
    padding:0 20px 18px;
    font-size:14.5px;
    color:var(--text-2);
    line-height:1.9;
    max-width:66em;
  }

  /* ============ 底部 CTA ============ */
  .cta-band{
    margin-top:64px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
    flex-wrap:wrap;
    padding:34px 36px;
    border-radius:var(--r-lg);
    border:1px solid var(--stroke);
    background:linear-gradient(135deg, rgba(31,227,176,.10), rgba(17,27,38,.9) 55%);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    box-shadow:var(--shadow-card);
  }
  .cta-band h2{
    font-size:clamp(20px,2.2vw,26px);
    font-weight:700;
    line-height:1.35;
  }
  .cta-band p{
    margin-top:8px;
    font-size:14.5px;
    color:var(--text-2);
    max-width:44em;
  }
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

  /* ============ 页脚 ============ */
  .site-footer{
    margin-top:88px;
    background:var(--bg-panel);
    border-top:1px solid var(--stroke);
    padding:56px 0 0;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.6fr 1fr 1fr 1.2fr;
    gap:36px;
    padding-bottom:40px;
  }
  .footer-brand{
    display:flex;
    align-items:center;
    gap:10px;
    color:var(--accent);
    margin-bottom:14px;
  }
  .footer-brand strong{
    font-size:15.5px;
    color:var(--text);
    font-weight:700;
  }
  .footer-text{
    font-size:13.5px;
    color:var(--text-3);
    line-height:1.85;
    max-width:30em;
  }
  .footer-col h3{
    font-size:13px;
    letter-spacing:.08em;
    color:var(--text-3);
    font-weight:600;
    margin-bottom:14px;
  }
  .footer-col ul{display:flex;flex-direction:column;gap:10px;}
  .footer-col a{
    font-size:14px;
    color:var(--text-2);
    transition:color .18s var(--ease);
  }
  .footer-col a:hover{color:var(--accent);}
  .footer-col p{
    font-size:13.5px;
    color:var(--text-3);
    line-height:1.9;
  }
  .footer-bottom{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    flex-wrap:wrap;
    padding:18px 0 24px;
    border-top:1px solid rgba(150,215,235,.1);
    font-size:12.5px;
    color:var(--text-3);
  }

  /* ============ 响应式 ============ */
  @media (max-width:1024px){
    .brand-text{display:none;}
    .brand-text-short{display:inline;}
    .nav-shell{gap:10px;padding:9px 12px;border-radius:18px;}
    .nav-cards{gap:6px;}
    .nav-card{padding:7px 10px;font-size:13px;}
    .nav-card span{white-space:nowrap;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
    .check-panel{grid-template-columns:1fr;gap:24px;}
  }

  @media (max-width:768px){
    .container{padding:0 20px;}
    .section{padding-top:48px;}
    .hero-metrics{grid-template-columns:1fr;}
    .hero-metric{border-left:0;border-top:1px solid var(--stroke);padding:14px 20px;}
    .hero-metric:first-child{border-top:0;}
    .fit-grid{grid-template-columns:1fr;}
    .compare-row{grid-template-columns:1fr;gap:8px;padding:18px 20px;}
    .cta-band{padding:26px 22px;margin-top:48px;}
    .site-footer{margin-top:60px;padding-top:44px;}
  }

  @media (max-width:520px){
    .nav-cta{height:34px;padding:0 14px;font-size:12.5px;}
    .page-title{font-size:30px;}
    .btn{height:44px;padding:0 20px;font-size:14.5px;}
    .fit-card{padding:20px;gap:12px;}
    .footer-grid{grid-template-columns:1fr;gap:24px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px;}
    .check-panel{padding:20px;}
    .cta-actions{width:100%;}
    .cta-actions .btn{flex:1 1 auto;}
  }

/* roulang page: category4 */
:root{
  --bg-deep:#060B12;
  --bg-panel:#0C141E;
  --bg-elev:#111B26;
  --glass:rgba(255,255,255,.045);
  --glass-2:rgba(255,255,255,.08);
  --stroke:rgba(150,215,235,.14);
  --stroke-hi:rgba(31,227,176,.45);
  --accent:#1FE3B0;
  --accent-deep:#0FB48C;
  --accent-warm:#FF6A3D;
  --accent-gold:#FFC24B;
  --text:#E9F1F7;
  --text-2:#9DAFBF;
  --text-3:#6B7E8E;
  --radius-lg:24px;
  --radius:20px;
  --radius-sm:14px;
  --shadow-card:0 20px 50px -28px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.06);
  --glow:0 0 24px -6px rgba(31,227,176,.55);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-deep);
  color:var(--text);
  font-family:'PingFang SC','HarmonyOS Sans SC','Noto Sans SC','Microsoft YaHei',sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  top:-220px;
  left:50%;
  transform:translateX(-50%);
  width:min(1100px,120vw);
  height:520px;
  background:radial-gradient(circle,rgba(31,227,176,.08),transparent 62%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,p,ul{margin:0;}
ul{padding:0;list-style:none;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
  position:relative;
  z-index:1;
}
/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  padding:14px 0;
  transition:background .2s var(--ease);
}
.site-header.is-scrolled .nav-shell{
  border-color:rgba(150,215,235,.24);
  box-shadow:0 22px 46px -30px rgba(0,0,0,.95), inset 0 1px 0 rgba(255,255,255,.07);
  background:rgba(10,17,26,.92);
}
.nav-shell{
  display:flex;
  align-items:center;
  gap:14px;
  padding:10px 16px;
  border:1px solid var(--stroke);
  border-radius:18px;
  background:rgba(12,20,30,.72);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow-card);
  transition:background .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  padding:4px 6px;
  border-radius:12px;
  transition:background .18s var(--ease);
}
.brand:hover{background:var(--glass);}
.brand:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.brand-mark{width:30px;height:30px;color:var(--accent);flex-shrink:0;}
.brand-text{
  font-size:15px;
  font-weight:700;
  letter-spacing:.01em;
  white-space:nowrap;
}
.brand-text-short{display:none;font-size:15px;font-weight:700;white-space:nowrap;}
.nav-cards{
  display:flex;
  align-items:center;
  gap:4px;
  flex:1;
  justify-content:center;
  overflow-x:auto;
  scrollbar-width:none;
}
.nav-cards::-webkit-scrollbar{display:none;}
.nav-card{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:7px 12px;
  border-radius:999px;
  border:1px solid transparent;
  color:var(--text-2);
  font-size:14px;
  white-space:nowrap;
  transition:color .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease);
}
.nav-card svg{width:16px;height:16px;flex-shrink:0;}
.nav-card:hover{color:var(--text);background:var(--glass);border-color:var(--stroke);}
.nav-card:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.nav-card.is-active{
  color:var(--accent);
  border-color:var(--stroke-hi);
  background:rgba(31,227,176,.09);
  box-shadow:0 0 20px -10px rgba(31,227,176,.7);
}
.nav-cta{
  flex-shrink:0;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:40px;
  padding:0 20px;
  border-radius:999px;
  background:linear-gradient(135deg,var(--accent),var(--accent-deep));
  color:#04211A;
  font-size:14px;
  font-weight:700;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),filter .18s var(--ease);
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:var(--glow);filter:brightness(1.05);}
.nav-cta:active{transform:none;}
.nav-cta:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
/* ---------- breadcrumb ---------- */
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  padding:26px 0 0;
}
.breadcrumb a{color:var(--text-2);transition:color .18s var(--ease);}
.breadcrumb a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px;}
.breadcrumb span.sep{color:var(--text-3);}
.breadcrumb .current{color:var(--text);}
/* ---------- hero band ---------- */
.hero-band{
  position:relative;
  margin-top:20px;
  border-radius:var(--radius-lg);
  border:1px solid var(--stroke);
  overflow:hidden;
  padding:46px 44px;
  background-image:
    linear-gradient(100deg,rgba(6,11,18,.94) 8%,rgba(6,11,18,.74) 52%,rgba(6,11,18,.9) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  box-shadow:var(--shadow-card);
}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 14px;
  border-radius:999px;
  border:1px solid var(--stroke-hi);
  background:rgba(31,227,176,.1);
  color:var(--accent);
  font-size:12px;
  letter-spacing:.04em;
}
.pulse-dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 0 rgba(31,227,176,.6);
  animation:pulse 2.2s infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(31,227,176,.55);}
  70%{box-shadow:0 0 0 10px rgba(31,227,176,0);}
  100%{box-shadow:0 0 0 0 rgba(31,227,176,0);}
}
.hero-title{
  margin-top:18px;
  font-size:clamp(30px,4.4vw,52px);
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.01em;
  max-width:22ch;
}
.hero-lead{
  margin-top:16px;
  font-size:17px;
  color:var(--text-2);
  max-width:46ch;
}
.hero-meta{
  margin-top:22px;
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
  font-size:13px;
  color:var(--text-3);
}
.hero-meta strong{color:var(--text);font-weight:600;}
.hero-meta .num{font-variant-numeric:tabular-nums;color:var(--accent-gold);font-weight:700;}
/* ---------- chips ---------- */
.chip-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:28px;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:8px 16px;
  border-radius:999px;
  border:1px solid var(--stroke);
  background:var(--glass);
  color:var(--text-2);
  font-size:14px;
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease),transform .18s var(--ease);
}
.chip:hover{color:var(--text);border-color:var(--stroke-hi);background:var(--glass-2);transform:translateY(-2px);}
.chip:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.chip.is-current{
  color:var(--accent);
  border-color:var(--stroke-hi);
  background:rgba(31,227,176,.1);
  box-shadow:0 0 18px -10px rgba(31,227,176,.8);
}
/* ---------- sections ---------- */
.section{margin-top:88px;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  margin-bottom:28px;
}
.section-title{
  font-size:clamp(22px,2.6vw,32px);
  line-height:1.28;
  font-weight:700;
  position:relative;
  padding-left:16px;
}
.section-title::before{
  content:"";
  position:absolute;
  left:0;top:8px;bottom:8px;
  width:4px;
  border-radius:4px;
  background:var(--accent);
}
.section-desc{color:var(--text-2);font-size:15px;max-width:64ch;}
/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:34px;}
.timeline::before{
  content:"";
  position:absolute;
  left:9px;top:10px;bottom:10px;
  width:2px;
  border-radius:2px;
  background:linear-gradient(180deg,rgba(31,227,176,.55),rgba(150,215,235,.1));
}
.tl-item{position:relative;margin-bottom:20px;}
.tl-item:last-child{margin-bottom:0;}
.tl-dot{
  position:absolute;
  left:-32px;
  top:30px;
  width:14px;height:14px;
  border-radius:50%;
  border:2px solid var(--accent);
  background:var(--bg-deep);
  box-shadow:0 0 16px -2px rgba(31,227,176,.85);
}
.tl-item.is-live .tl-dot{border-color:var(--accent-warm);box-shadow:0 0 16px -2px rgba(255,106,61,.85);}
.tl-card{
  display:grid;
  grid-template-columns:1fr 122px;
  gap:20px;
  align-items:center;
  padding:20px 22px;
  border-radius:var(--radius);
  border:1px solid var(--stroke);
  background:var(--glass);
  box-shadow:var(--shadow-card);
  transition:border-color .18s var(--ease),background .18s var(--ease),transform .18s var(--ease);
}
.tl-card:hover{border-color:var(--stroke-hi);background:var(--glass-2);transform:translateY(-2px);}
.tl-time{
  display:flex;
  align-items:baseline;
  gap:10px;
  font-variant-numeric:tabular-nums;
  font-size:26px;
  font-weight:800;
  color:var(--accent);
  letter-spacing:.01em;
}
.tl-time small{font-size:13px;font-weight:600;color:var(--text-3);letter-spacing:.02em;}
.tl-title{
  margin-top:8px;
  font-size:19px;
  font-weight:600;
  line-height:1.4;
}
.tl-desc{
  margin-top:8px;
  font-size:14px;
  color:var(--text-2);
  line-height:1.75;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 11px;
  border-radius:999px;
  font-size:12px;
  letter-spacing:.04em;
  border:1px solid var(--stroke);
  color:var(--text-2);
  background:rgba(255,255,255,.03);
}
.badge.is-accent{color:var(--accent);border-color:var(--stroke-hi);background:rgba(31,227,176,.1);}
.badge.is-warm{color:var(--accent-warm);border-color:rgba(255,106,61,.4);background:rgba(255,106,61,.1);}
.badge.is-gold{color:var(--accent-gold);border-color:rgba(255,194,75,.36);background:rgba(255,194,75,.09);}
.tl-thumb{
  width:122px;
  aspect-ratio:4/3;
  border-radius:var(--radius-sm);
  overflow:hidden;
  border:1px solid var(--stroke);
  background:var(--bg-elev);
}
.tl-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .25s var(--ease);}
.tl-card:hover .tl-thumb img{transform:scale(1.03);}
/* ---------- stats ---------- */
.stat-row{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border:1px solid var(--stroke);
  border-radius:var(--radius);
  background:var(--glass);
  overflow:hidden;
  box-shadow:var(--shadow-card);
}
.stat-item{
  padding:24px 22px;
  border-right:1px solid var(--stroke);
}
.stat-item:last-child{border-right:none;}
.stat-num{
  font-variant-numeric:tabular-nums;
  font-size:30px;
  font-weight:800;
  color:var(--accent-gold);
  line-height:1.2;
  letter-spacing:.01em;
}
.stat-num span{font-size:15px;font-weight:600;color:var(--text-2);margin-left:4px;}
.stat-label{margin-top:6px;font-size:13px;color:var(--text-3);}
/* ---------- checklist ---------- */
.checklist{display:flex;flex-direction:column;gap:12px;}
.check-item{
  display:flex;
  gap:16px;
  align-items:flex-start;
  padding:18px 20px;
  border-radius:var(--radius-sm);
  border:1px solid var(--stroke);
  background:var(--glass);
  transition:border-color .18s var(--ease),background .18s var(--ease),transform .18s var(--ease);
}
.check-item:hover{border-color:var(--stroke-hi);background:var(--glass-2);transform:translateX(2px);}
.check-icon{
  flex-shrink:0;
  width:26px;height:26px;
  border-radius:50%;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--stroke-hi);
  color:var(--accent);
  background:rgba(31,227,176,.08);
  margin-top:2px;
}
.check-icon svg{width:14px;height:14px;}
.check-title{font-size:16px;font-weight:600;}
.check-text{margin-top:4px;font-size:14px;color:var(--text-2);line-height:1.75;}
/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:820px;}
.faq-item{
  border-radius:var(--radius-sm);
  border:1px solid var(--stroke);
  background:var(--glass);
  overflow:hidden;
  transition:border-color .18s var(--ease),background .18s var(--ease);
}
.faq-item:hover{border-color:rgba(150,215,235,.26);}
.faq-item.is-open{border-color:var(--stroke-hi);background:var(--glass-2);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 20px;
  background:transparent;
  border:none;
  color:var(--text);
  font-size:16px;
  font-weight:600;
  text-align:left;
  cursor:pointer;
  transition:color .18s var(--ease);
}
.faq-q:hover{color:var(--accent);}
.faq-q:focus-visible{outline:2px solid var(--accent);outline-offset:-2px;}
.faq-arrow{
  flex-shrink:0;
  width:18px;height:18px;
  color:var(--text-2);
  transition:transform .2s var(--ease),color .18s var(--ease);
}
.faq-item.is-open .faq-arrow{transform:rotate(180deg);color:var(--accent);}
.faq-a{
  display:none;
  padding:0 20px 20px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.85;
}
.faq-item.is-open .faq-a{display:block;}
/* ---------- cta ---------- */
.cta-panel{
  margin-top:88px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:26px;
  flex-wrap:wrap;
  padding:36px 40px;
  border-radius:var(--radius-lg);
  border:1px solid var(--stroke);
  background:linear-gradient(120deg,rgba(31,227,176,.09),rgba(255,255,255,.03) 55%,rgba(12,20,30,.6));
  box-shadow:var(--shadow-card);
}
.cta-panel h2{
  font-size:clamp(22px,2.6vw,30px);
  line-height:1.3;
  font-weight:700;
}
.cta-panel p{margin-top:10px;color:var(--text-2);font-size:15px;max-width:52ch;}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:999px;
  font-size:15px;
  font-weight:700;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),filter .18s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-deep));
  color:#04211A;
  box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.05);box-shadow:0 0 28px -4px rgba(31,227,176,.7);}
.btn-primary:active{transform:none;box-shadow:none;}
.btn-primary:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.btn-ghost{
  background:transparent;
  border-color:var(--stroke);
  color:var(--text);
}
.btn-ghost:hover{background:var(--glass-2);border-color:var(--stroke-hi);transform:translateY(-2px);}
.btn-ghost:active{transform:none;}
.btn-ghost:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
/* ---------- footer ---------- */
.site-footer{
  margin-top:88px;
  padding:56px 0 24px;
  background:var(--bg-panel);
  border-top:1px solid var(--stroke);
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:32px;
}
.footer-brand{display:flex;align-items:center;gap:10px;}
.footer-brand .brand-mark{width:28px;height:28px;color:var(--accent);}
.footer-brand strong{font-size:15px;letter-spacing:.01em;}
.footer-text{margin-top:14px;font-size:14px;color:var(--text-2);line-height:1.8;max-width:34ch;}
.footer-col h3{font-size:14px;font-weight:700;color:var(--text);margin-bottom:14px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a,.footer-col p{font-size:14px;color:var(--text-2);line-height:1.7;}
.footer-col a{transition:color .18s var(--ease);}
.footer-col a:hover{color:var(--accent);}
.footer-col a:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.footer-col ul + p{margin-top:10px;}
.footer-bottom{
  margin-top:40px;
  padding-top:18px;
  border-top:1px solid var(--stroke);
  display:flex;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  font-size:12.5px;
  color:var(--text-3);
}
/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-shell{flex-wrap:wrap;border-radius:20px;padding:10px 12px;gap:10px;}
  .brand{order:1;}
  .nav-cta{order:2;margin-left:auto;height:36px;padding:0 16px;font-size:13px;}
  .nav-cards{
    order:3;
    width:100%;
    justify-content:flex-start;
    padding-bottom:2px;
    scroll-snap-type:x proximity;
  }
  .nav-card{scroll-snap-align:start;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .hero-band{padding:36px 28px;}
  .stat-row{grid-template-columns:repeat(2,1fr);}
  .stat-item:nth-child(2){border-right:none;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--stroke);}
  .section{margin-top:64px;}
  .cta-panel{margin-top:64px;padding:28px 26px;}
  .site-footer{margin-top:64px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .brand-text{display:none;}
  .brand-text-short{display:inline;}
  .hero-band{padding:30px 22px;border-radius:20px;}
  .hero-lead{font-size:15.5px;}
  .tl-card{grid-template-columns:1fr 92px;gap:14px;padding:18px;}
  .tl-thumb{width:92px;}
  .tl-time{font-size:22px;}
  .tl-title{font-size:17px;}
  .section-head{margin-bottom:22px;}
  .btn{height:44px;padding:0 20px;font-size:14px;}
  .cta-panel{padding:24px 20px;}
}
@media (max-width:519px){
  .timeline{padding-left:24px;}
  .timeline::before{left:6px;}
  .tl-dot{left:-24px;top:26px;width:12px;height:12px;}
  .tl-card{grid-template-columns:1fr;}
  .tl-thumb{width:100%;aspect-ratio:16/9;}
  .stat-row{grid-template-columns:1fr;}
  .stat-item{border-right:none;border-bottom:1px solid var(--stroke);}
  .stat-item:last-child{border-bottom:none;}
  .check-item{padding:16px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .chip{font-size:13px;padding:7px 13px;}
}

/* roulang page: category5 */
:root{
  --bg-deep:#060B12;
  --bg-panel:#0C141E;
  --bg-elev:#111B26;
  --glass:rgba(255,255,255,.045);
  --glass-2:rgba(255,255,255,.08);
  --stroke:rgba(150,215,235,.14);
  --stroke-hi:rgba(31,227,176,.45);
  --accent:#1FE3B0;
  --accent-deep:#0FB48C;
  --accent-warm:#FF6A3D;
  --accent-gold:#FFC24B;
  --text:#E9F1F7;
  --text-2:#9DAFBF;
  --text-3:#6B7E8E;
  --radius-lg:24px;
  --radius:20px;
  --radius-sm:14px;
  --pill:999px;
  --shadow-card:0 20px 50px -28px rgba(0,0,0,.9),inset 0 1px 0 rgba(255,255,255,.06);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-deep);
  color:var(--text);
  font-family:'PingFang SC','HarmonyOS Sans SC','Noto Sans SC','Microsoft YaHei',sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body::before{
  content:"";
  position:fixed;
  top:-220px;
  left:50%;
  transform:translateX(-50%);
  width:min(1100px,120vw);
  height:520px;
  background:radial-gradient(circle at 50% 50%,rgba(31,227,176,.08),rgba(31,227,176,0) 68%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:8px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1;}
@media (max-width:640px){.container{padding:0 20px;}}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  padding:16px 0 8px;
}
.nav-shell{
  display:flex;
  align-items:center;
  gap:14px;
  padding:10px 12px;
  border-radius:var(--radius);
  border:1px solid transparent;
  background:rgba(12,20,30,.66);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.nav-shell.is-scrolled{
  border-color:var(--stroke);
  background:rgba(10,17,26,.9);
  box-shadow:0 18px 40px -30px rgba(0,0,0,.95),inset 0 1px 0 rgba(255,255,255,.05);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  padding:6px 8px 6px 4px;
  border-radius:var(--radius-sm);
  transition:background .18s var(--ease);
}
.brand:hover{background:var(--glass);}
.brand-mark{width:30px;height:30px;color:var(--accent);flex:0 0 auto;filter:drop-shadow(0 0 10px rgba(31,227,176,.35));}
.brand-text{font-size:15px;font-weight:700;letter-spacing:.02em;color:var(--text);white-space:nowrap;}
.brand-text-short{display:none;font-size:15px;font-weight:700;letter-spacing:.02em;color:var(--text);white-space:nowrap;}
.nav-cards{
  display:flex;
  align-items:center;
  gap:8px;
  flex:1 1 auto;
  min-width:0;
  overflow-x:auto;
  scrollbar-width:none;
  scroll-snap-type:x mandatory;
  padding:2px;
}
.nav-cards::-webkit-scrollbar{display:none;}
.nav-card{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:8px 13px;
  border-radius:var(--pill);
  border:1px solid transparent;
  color:var(--text-2);
  font-size:13.5px;
  font-weight:500;
  white-space:nowrap;
  scroll-snap-align:start;
  transition:color .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.nav-card svg{width:16px;height:16px;flex:0 0 auto;}
.nav-card:hover{color:var(--text);background:var(--glass);border-color:var(--stroke);}
.nav-card.is-active{
  color:var(--accent);
  border-color:var(--stroke-hi);
  background:rgba(31,227,176,.09);
  box-shadow:0 0 18px -8px rgba(31,227,176,.7);
}
.nav-card:active{transform:translateY(1px);}
.nav-cta{flex:0 0 auto;}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--pill);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  cursor:pointer;
  transition:transform .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),filter .18s var(--ease);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-deep));
  color:#04120E;
  box-shadow:0 0 24px -6px rgba(31,227,176,.55);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 32px -6px rgba(31,227,176,.75);filter:brightness(1.05);}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 16px -8px rgba(31,227,176,.55);}
.btn-ghost{
  background:transparent;
  border-color:var(--stroke);
  color:var(--text);
}
.btn-ghost:hover{background:var(--glass);border-color:var(--accent);color:var(--accent);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);background:var(--glass-2);}

/* ---------- Breadcrumb ---------- */
main{display:block;}
.page-top{padding-top:28px;}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:18px;
}
.breadcrumb a{color:var(--text-3);transition:color .18s var(--ease);text-underline-offset:4px;}
.breadcrumb a:hover{color:var(--accent);text-decoration:underline;}
.breadcrumb .sep{color:rgba(107,126,142,.6);}
.breadcrumb .current{color:var(--text-2);}

/* ---------- Page hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid var(--stroke);
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  padding:44px 40px;
  box-shadow:var(--shadow-card);
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(135deg,rgba(6,11,18,.94) 0%,rgba(6,11,18,.84) 48%,rgba(6,11,18,.92) 100%);
}
.page-hero > *{position:relative;z-index:1;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--pill);
  border:1px solid var(--stroke-hi);
  background:rgba(31,227,176,.09);
  color:var(--accent);
  font-size:12px;
  letter-spacing:.06em;
  font-weight:600;
}
.eyebrow .dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 4px rgba(31,227,176,.16);
  animation:pulse 2.2s infinite;
}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 4px rgba(31,227,176,.16);}
  50%{box-shadow:0 0 0 9px rgba(31,227,176,0);}
}
.page-hero h1{
  margin-top:20px;
  font-size:clamp(30px,4.4vw,52px);
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.01em;
  max-width:840px;
}
.hero-lead{
  margin-top:16px;
  max-width:640px;
  font-size:16px;
  line-height:1.8;
  color:var(--text-2);
}
.chip-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:28px;
}
.chip{
  display:inline-flex;
  align-items:center;
  padding:8px 15px;
  border-radius:var(--pill);
  border:1px solid var(--stroke);
  background:var(--glass);
  color:var(--text-2);
  font-size:13.5px;
  font-weight:500;
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease),transform .18s var(--ease);
}
.chip:hover{color:var(--text);border-color:var(--accent);background:var(--glass-2);transform:translateY(-2px);}
.chip.is-active{
  color:var(--accent);
  border-color:var(--stroke-hi);
  background:rgba(31,227,176,.1);
}
.chip:active{transform:translateY(0);}

/* ---------- Sections ---------- */
.section{margin-top:88px;}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:12px;
  margin-bottom:26px;
}
.section-title{
  position:relative;
  padding-left:16px;
  font-size:clamp(22px,2.6vw,32px);
  line-height:1.28;
  font-weight:700;
  letter-spacing:-.01em;
}
.section-title::before{
  content:"";
  position:absolute;
  left:0;
  top:.28em;
  width:4px;
  height:18px;
  border-radius:2px;
  background:var(--accent);
  box-shadow:0 0 14px -2px rgba(31,227,176,.7);
}
.section-note{
  font-size:13px;
  color:var(--text-3);
}

/* ---------- Search panel ---------- */
.search-panel{
  margin-top:32px;
  border-radius:var(--radius);
  border:1px solid var(--stroke);
  background:var(--bg-panel);
  padding:26px 28px;
  box-shadow:var(--shadow-card);
}
.search-label{
  display:block;
  font-size:14px;
  font-weight:600;
  color:var(--text);
  margin-bottom:12px;
}
.search-field{
  display:flex;
  align-items:center;
  gap:12px;
  border-radius:var(--pill);
  border:1px solid var(--stroke);
  background:var(--glass);
  padding:0 8px 0 18px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.search-field:focus-within{
  border-color:var(--stroke-hi);
  background:rgba(31,227,176,.06);
  box-shadow:0 0 0 4px rgba(31,227,176,.1);
}
.search-field svg{width:18px;height:18px;color:var(--text-3);flex:0 0 auto;}
.search-input{
  flex:1 1 auto;
  min-width:0;
  height:50px;
  border:0;
  background:transparent;
  color:var(--text);
  font-size:15px;
  font-family:inherit;
  outline:none;
}
.search-input::placeholder{color:var(--text-3);}
.search-clear{
  flex:0 0 auto;
  height:36px;
  padding:0 16px;
  border-radius:var(--pill);
  border:1px solid var(--stroke);
  background:transparent;
  color:var(--text-2);
  font-size:13px;
  cursor:pointer;
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.search-clear:hover{color:var(--accent);border-color:var(--accent);background:var(--glass);}
.search-clear:active{transform:translateY(1px);}
.search-meta{
  display:flex;
  flex-wrap:wrap;
  gap:8px 18px;
  margin-top:14px;
  font-size:12.5px;
  color:var(--text-3);
}
.search-meta strong{color:var(--accent-gold);font-weight:600;font-variant-numeric:tabular-nums;}

/* ---------- FAQ accordion ---------- */
.faq-group{
  display:flex;
  flex-direction:column;
  gap:12px;
  max-width:900px;
}
.faq-item{
  border-radius:var(--radius-sm);
  border:1px solid var(--stroke);
  background:var(--bg-panel);
  transition:border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item:hover{border-color:rgba(150,215,235,.28);}
.faq-item[open]{
  background:var(--bg-elev);
  border-color:var(--stroke-hi);
  box-shadow:0 16px 40px -30px rgba(0,0,0,.95);
}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  cursor:pointer;
  list-style:none;
  font-size:15.5px;
  font-weight:600;
  color:var(--text);
  border-radius:var(--radius-sm);
  transition:color .18s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::marker{content:"";}
.faq-item summary:hover{color:var(--accent);}
.faq-arrow{
  flex:0 0 auto;
  width:22px;
  height:22px;
  border-radius:50%;
  border:1px solid var(--stroke);
  position:relative;
  transition:transform .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.faq-arrow::before,
.faq-arrow::after{
  content:"";
  position:absolute;
  top:50%;
  left:50%;
  background:var(--text-2);
  border-radius:2px;
  transition:background .2s var(--ease);
}
.faq-arrow::before{width:9px;height:1.5px;transform:translate(-50%,-50%);}
.faq-arrow::after{width:1.5px;height:9px;transform:translate(-50%,-50%);transition:opacity .2s var(--ease),background .2s var(--ease);}
.faq-item[open] .faq-arrow{transform:rotate(180deg);border-color:var(--stroke-hi);background:rgba(31,227,176,.12);}
.faq-item[open] .faq-arrow::before{background:var(--accent);}
.faq-item[open] .faq-arrow::after{opacity:0;}
.faq-a{
  padding:0 22px 20px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
  border-top:1px solid var(--stroke);
  margin-top:2px;
  padding-top:16px;
}
.faq-a p + p{margin-top:10px;}
.faq-a strong{color:var(--text);font-weight:600;}
.faq-empty{
  max-width:900px;
  border-radius:var(--radius);
  border:1px dashed var(--stroke);
  background:var(--glass);
  padding:44px 24px;
  text-align:center;
  color:var(--text-2);
}
.faq-empty svg{width:40px;height:40px;margin:0 auto 14px;color:var(--text-3);}
.faq-empty p{font-size:14.5px;}

/* ---------- Quick table ---------- */
.table-wrap{
  border-radius:var(--radius);
  border:1px solid var(--stroke);
  background:var(--bg-panel);
  overflow-x:auto;
  box-shadow:var(--shadow-card);
}
table.quick-table{
  width:100%;
  min-width:560px;
  border-collapse:collapse;
  font-size:14.5px;
}
.quick-table thead th{
  background:var(--glass-2);
  color:var(--text);
  font-weight:600;
  text-align:left;
  padding:15px 22px;
  border-bottom:1px solid var(--stroke);
  white-space:nowrap;
  letter-spacing:.02em;
}
.quick-table tbody td{
  padding:15px 22px;
  border-bottom:1px solid rgba(150,215,235,.08);
  color:var(--text-2);
  vertical-align:top;
}
.quick-table tbody tr:last-child td{border-bottom:0;}
.quick-table tbody tr{transition:background .18s var(--ease);}
.quick-table tbody tr:hover{background:rgba(255,255,255,.03);}
.quick-table td:first-child{color:var(--text);font-weight:600;white-space:nowrap;}

/* ---------- Support block ---------- */
.support-grid{
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:24px;
  align-items:start;
}
.support-list{
  display:flex;
  flex-direction:column;
  gap:14px;
}
.support-item{
  display:flex;
  gap:16px;
  padding:20px 22px;
  border-radius:var(--radius-sm);
  border:1px solid var(--stroke);
  background:var(--bg-panel);
  transition:border-color .2s var(--ease),transform .2s var(--ease),background .2s var(--ease);
}
.support-item:hover{border-color:var(--stroke-hi);transform:translateY(-2px);background:var(--bg-elev);}
.support-num{
  flex:0 0 auto;
  width:34px;height:34px;
  border-radius:50%;
  border:1px solid var(--stroke-hi);
  color:var(--accent);
  display:flex;align-items:center;justify-content:center;
  font-size:13.5px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
}
.support-item h3{font-size:15.5px;font-weight:600;color:var(--text);margin-bottom:4px;}
.support-item p{font-size:14px;color:var(--text-2);line-height:1.75;}
.info-card{
  border-radius:var(--radius);
  border:1px solid var(--stroke);
  background:var(--bg-elev);
  padding:28px;
  box-shadow:var(--shadow-card);
}
.info-card h3{font-size:17px;font-weight:600;color:var(--text);margin-bottom:16px;}
.info-row{
  display:flex;
  justify-content:space-between;
  gap:16px;
  padding:12px 0;
  border-bottom:1px solid rgba(150,215,235,.1);
  font-size:14px;
}
.info-row:last-of-type{border-bottom:0;}
.info-row span:first-child{color:var(--text-3);flex:0 0 auto;}
.info-row span:last-child{color:var(--text);text-align:right;font-variant-numeric:tabular-nums;}
.info-card .btn{width:100%;margin-top:18px;}
.info-tip{
  margin-top:14px;
  font-size:12.5px;
  color:var(--text-3);
  line-height:1.7;
}

/* ---------- CTA ---------- */
.cta-panel{
  margin-top:88px;
  border-radius:var(--radius-lg);
  border:1px solid var(--stroke);
  background:linear-gradient(120deg,rgba(17,27,38,.94),rgba(12,20,30,.94));
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  padding:40px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  box-shadow:var(--shadow-card);
}
.cta-panel h2{
  font-size:clamp(22px,2.4vw,30px);
  line-height:1.3;
  font-weight:700;
  max-width:560px;
}
.cta-panel p{
  margin-top:10px;
  font-size:14.5px;
  color:var(--text-2);
  max-width:560px;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- Footer ---------- */
.site-footer{
  margin-top:88px;
  background:var(--bg-panel);
  border-top:1px solid var(--stroke);
  padding:56px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand strong{font-size:15.5px;font-weight:700;letter-spacing:.02em;color:var(--text);}
.footer-brand .brand-mark{width:28px;height:28px;color:var(--accent);}
.footer-text{font-size:13.5px;color:var(--text-3);line-height:1.8;max-width:320px;}
.footer-col h3{font-size:13px;font-weight:600;color:var(--text);letter-spacing:.08em;margin-bottom:14px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li{font-size:13.5px;color:var(--text-3);line-height:1.7;}
.footer-col a{color:var(--text-2);transition:color .18s var(--ease);}
.footer-col a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px;}
.footer-col p{font-size:13.5px;color:var(--text-3);line-height:1.8;margin-bottom:8px;}
.footer-bottom{
  border-top:1px solid rgba(150,215,235,.1);
  padding:20px 0 26px;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  font-size:12.5px;
  color:var(--text-3);
}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .nav-shell{flex-wrap:nowrap;}
  .nav-cards{
    scroll-snap-type:x mandatory;
  }
  .support-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .page-hero{padding:36px 28px;}
}
@media (max-width:900px){
  .brand-text{display:none;}
  .brand-text-short{display:inline;}
  .nav-cta .btn{height:38px;padding:0 14px;font-size:13px;}
}
@media (max-width:768px){
  .section{margin-top:56px;}
  .cta-panel{margin-top:56px;padding:28px 24px;}
  .site-footer{margin-top:56px;padding-top:44px;}
  .page-hero{padding:30px 22px;}
  .chip-row{margin-top:22px;}
  .search-panel{padding:20px;}
  .search-clear{display:none;}
  .faq-item summary{padding:16px 18px;font-size:15px;}
  .faq-a{padding:14px 18px 18px;font-size:14.5px;}
  .info-card{padding:22px;}
}
@media (max-width:640px){
  .section{margin-top:48px;}
  .btn{height:44px;padding:0 20px;font-size:14.5px;}
  .btn-sm{height:38px;padding:0 15px;font-size:13.5px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .cta-panel h2{font-size:22px;}
  .quick-table thead th,.quick-table tbody td{padding:13px 16px;}
}
@media (max-width:520px){
  .page-hero h1{font-size:28px;}
  .hero-lead{font-size:15px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
}