/* roulang page: index */
:root{
  --bg-0:#070B12;
  --bg-1:#0C1220;
  --bg-2:#121A2B;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(22,224,164,.35);
  --brand:#16E0A4;
  --brand-deep:#0FD196;
  --brand-2:#FF7A2F;
  --text-1:#E9EFF7;
  --text-2:#97A6BC;
  --glass:rgba(255,255,255,.045);
  --radius-card:16px;
  --radius-btn:12px;
  --radius-input:10px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-hover:0 14px 34px rgba(0,0,0,.5);
  --container:1200px;
  --num-font:"DIN Alternate","Barlow Semi Condensed",ui-monospace,"SF Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;color:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
.section{padding:72px 0;position:relative}
.section--alt{background:var(--bg-1)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:36px}
.h2{
  font-size:clamp(24px,2.6vw,34px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.4px;
  display:flex;
  align-items:center;
  gap:14px;
}
.h2::before{content:"";width:4px;height:.82em;background:var(--brand);border-radius:2px;flex:none}
.section-lead{color:var(--text-2);font-size:15px;margin-top:12px}
.head-link{color:var(--brand);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.head-link:hover{color:#5cf3c6}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,18,.9);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.site-header::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--brand),rgba(22,224,164,0) 60%);
}
.nav-wrap{display:flex;align-items:center;gap:28px;min-height:76px}
.brand{display:flex;flex-direction:column;gap:2px;flex:none;line-height:1.2}
.brand-name{font-size:18px;font-weight:800;letter-spacing:-.3px}
.brand-name em{font-style:normal;color:var(--brand)}
.brand-sub{font-size:10px;letter-spacing:.14em;color:var(--text-2)}
.nav-toggle{
  display:none;margin-left:auto;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line);background:transparent;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-1);border-radius:2px;transition:.2s}
.site-nav{display:flex;align-items:center;gap:28px;margin-left:auto;flex:1 1 auto;justify-content:flex-end}
.nav-links{display:flex;align-items:center;gap:26px;list-style:none}
.nav-links a{
  position:relative;display:inline-block;padding:6px 0;
  font-size:14px;color:var(--text-2);transition:color .2s;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;
  background:var(--brand);transition:width .2s cubic-bezier(.2,.7,.3,1);
}
.nav-links a:hover,.nav-links a.is-active{color:var(--text-1)}
.nav-links a:hover::after,.nav-links a.is-active::after{width:100%}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s,background .2s,border-color .2s,color .2s,filter .2s;
  text-align:center;
}
.btn-primary{
  background:linear-gradient(180deg,var(--brand),var(--brand-deep));
  color:#05130E;font-weight:700;
  box-shadow:0 0 0 1px rgba(22,224,164,.5),0 6px 22px rgba(22,224,164,.28);
}
.btn-primary:hover{
  transform:translateY(-2px);filter:brightness(1.06);
  box-shadow:0 0 0 1px rgba(22,224,164,.62),0 10px 30px rgba(22,224,164,.4);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(22,224,164,.5),0 3px 12px rgba(22,224,164,.24)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text-1)}
.btn-ghost:hover{border-color:var(--line-strong);color:var(--brand);transform:translateY(-2px)}
.btn-sm{padding:10px 16px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
.btn:focus-visible,.link-arrow:focus-visible,.nav-toggle:focus-visible,.car-btn:focus-visible,.dot:focus-visible,.faq-q:focus-visible{
  outline:2px solid var(--brand);outline-offset:3px;
}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:14px;font-weight:600;transition:color .2s,gap .2s;
}
.link-arrow:hover{color:#5cf3c6;gap:10px}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:88px 0 84px;background:linear-gradient(180deg,var(--bg-0),var(--bg-1))}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,18,.8),rgba(7,11,18,.92)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  opacity:.9;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:24px 24px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
}
.hero > .container{position:relative;z-index:2}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  border:1px solid var(--line-strong);background:rgba(22,224,164,.08);
  color:var(--brand);font-size:12px;letter-spacing:.06em;margin-bottom:20px;
}
.hero-title{
  font-size:clamp(30px,4.2vw,52px);line-height:1.15;font-weight:800;
  letter-spacing:-.5px;margin-bottom:16px;
}
.hero-sub{font-size:clamp(17px,1.9vw,21px);font-weight:600;margin-bottom:14px}
.hero-desc p{color:var(--text-2);font-size:15px;line-height:1.75;margin-bottom:6px}
.hero-badges{display:flex;gap:10px;flex-wrap:wrap;margin:26px 0 28px}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border:1px solid var(--line);border-radius:999px;
  background:var(--glass);font-size:12px;color:var(--text-2);
}
.badge i{color:var(--brand);font-size:12px}
.badge b{font-family:var(--num-font);font-size:14px;font-weight:700;color:var(--text-1);letter-spacing:.02em}
.hero-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.hero-card{
  position:relative;overflow:hidden;
  background:var(--glass);backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line);border-radius:var(--radius-card);
  padding:18px;box-shadow:var(--shadow-card);
}
.hero-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--brand),transparent);
}
.hero-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:12px;border:1px solid var(--line)}
.check-list{list-style:none;margin:16px 0 18px}
.check-list li{display:flex;align-items:flex-start;gap:10px;padding:6px 0;font-size:14px;color:var(--text-2)}
.check-list i{color:var(--brand);font-size:13px;margin-top:5px;flex:none}

/* ---------- carousel ---------- */
.shots-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:10px;scrollbar-width:none;
}
.shots-track::-webkit-scrollbar{display:none}
.shot{
  flex:0 0 calc((100% - 40px)/3);scroll-snap-align:start;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s,border-color .2s;
}
.shot:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.shot img{width:100%;aspect-ratio:16/10;object-fit:cover}
.shot-body{padding:16px 18px 20px}
.shot-body h3{font-size:18px;font-weight:600;margin-bottom:6px;line-height:1.4}
.shot-body p{font-size:14px;color:var(--text-2);line-height:1.7}
.shots-nav{display:flex;align-items:center;justify-content:space-between;margin-top:22px;gap:16px}
.dots{display:flex;gap:8px;align-items:center}
.dot{width:8px;height:8px;padding:0;border:0;border-radius:50%;background:rgba(255,255,255,.2);transition:.25s}
.dot.is-active{width:22px;border-radius:999px;background:var(--brand)}
.car-ctrl{display:flex;gap:10px}
.car-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);
  background:transparent;display:inline-flex;align-items:center;justify-content:center;
  color:var(--text-1);transition:.2s;
}
.car-btn:hover{background:var(--brand);border-color:var(--brand);color:#05130E}

/* ---------- spec matrix ---------- */
.spec-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;background:var(--bg-2);
}
.spec{padding:24px 22px;border-right:1px solid var(--line)}
.spec:last-child{border-right:0}
.spec-head{display:flex;align-items:center;gap:10px;font-weight:600;font-size:15px;margin-bottom:16px}
.spec-head i{color:var(--brand);font-size:19px}
.spec dl{display:grid;grid-template-columns:auto 1fr;gap:9px 12px;font-size:13px;margin:0}
.spec dt{color:var(--text-2)}
.spec dd{margin:0;text-align:right;font-family:var(--num-font);color:var(--text-1);font-weight:700}

/* ---------- news ---------- */
.news-main{
  display:flex;flex-direction:column;height:100%;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:transform .2s,box-shadow .2s,border-color .2s;
}
.news-main:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.news-main img{width:100%;aspect-ratio:16/9;object-fit:cover}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1 1 auto}
.tag{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;
  background:rgba(22,224,164,.12);color:var(--brand);font-size:12px;font-weight:600;
  align-self:flex-start;
}
.tag--alt{background:rgba(255,122,47,.14);color:var(--brand-2)}
.news-main h3{
  font-size:20px;font-weight:700;line-height:1.45;margin:12px 0 8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-main p{
  color:var(--text-2);font-size:14px;line-height:1.7;margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  border-top:1px solid var(--line);padding-top:12px;margin-top:auto;
  font-size:12px;color:var(--text-2);
}
.news-meta .arrow{color:var(--brand)}
.news-mini{
  display:flex;gap:14px;height:100%;padding:14px;
  background:var(--bg-2);border:1px solid var(--line);border-radius:14px;
  transition:transform .2s,border-color .2s,box-shadow .2s;
}
.news-mini:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:var(--shadow-card)}
.news-mini img{width:88px;height:70px;flex:none;object-fit:cover;border-radius:10px}
.news-mini h3{
  font-size:15px;font-weight:600;line-height:1.45;margin:6px 0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-mini .mini-date{font-size:12px;color:var(--text-2);font-family:var(--num-font)}
.empty-state{
  text-align:center;padding:52px 24px;border:1px dashed var(--line);
  border-radius:var(--radius-card);background:var(--glass);
}
.empty-state i{font-size:30px;color:var(--text-2);margin-bottom:14px;display:block}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:18px}

/* ---------- voices ---------- */
.voices{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}
.voices-col:last-child{margin-top:40px}
.voice{
  background:var(--glass);backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;margin-bottom:20px;transition:border-color .2s,transform .2s;
}
.voice:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.stars{color:var(--brand-2);font-size:13px;letter-spacing:3px;margin-bottom:10px}
.voice p{font-size:15px;line-height:1.75;margin-bottom:16px}
.voice-user{display:flex;align-items:center;gap:12px}
.avatar{
  width:38px;height:38px;border-radius:50%;flex:none;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand),#0b7b5c);
  color:#05130E;font-weight:700;font-size:14px;
}
.voice-user b{display:block;font-size:14px}
.voice-user small{color:var(--text-2);font-size:12px}

/* ---------- download panel ---------- */
.dl-panel{
  background:var(--glass);backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line);border-radius:20px;padding:32px;
}
.dl-panel h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.3;margin-bottom:10px}
.dl-panel .dl-lead{color:var(--text-2);font-size:15px}
.dl-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:24px}
.dl-btn{
  display:flex;align-items:center;gap:12px;padding:14px 16px;
  border-radius:var(--radius-btn);border:1px solid var(--line);
  background:transparent;transition:transform .2s,border-color .2s,box-shadow .2s;
  text-align:left;
}
.dl-btn i.platform{font-size:20px;color:var(--text-1);width:22px;text-align:center}
.dl-btn b{display:block;font-size:15px;font-weight:600}
.dl-btn small{color:var(--text-2);font-size:12px;font-family:var(--num-font)}
.dl-btn .dl-end{margin-left:auto;color:var(--text-2)}
.dl-btn:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-card)}
.dl-btn.is-primary{
  background:linear-gradient(180deg,var(--brand),var(--brand-deep));
  border-color:transparent;
  box-shadow:0 0 0 1px rgba(22,224,164,.4),0 8px 24px rgba(22,224,164,.25);
}
.dl-btn.is-primary b,.dl-btn.is-primary small,.dl-btn.is-primary i.platform,.dl-btn.is-primary .dl-end{color:#05130E}
.dl-note{color:var(--text-2);font-size:12px;margin-top:18px;line-height:1.7}
.qr-wrap{text-align:center}
.qr-box{
  width:140px;height:140px;margin:0 auto 10px;border-radius:12px;background:#fff;
  display:flex;align-items:center;justify-content:center;color:#0b1220;
}
.qr-box i{font-size:64px}
.qr-wrap span{font-size:12px;color:var(--text-2);display:block}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:18px 0;background:none;border:0;
  font-size:16px;font-weight:600;color:var(--text-1);text-align:left;
}
.faq-q i{color:var(--brand);font-size:14px;transition:transform .2s;flex:none}
.faq-item.is-open .faq-q i{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.is-open .faq-a{max-height:340px}
.faq-a p{padding:0 0 18px;color:var(--text-2);font-size:14px;line-height:1.8}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border:1px solid var(--line);border-radius:20px;
  padding:44px;
  background:linear-gradient(120deg,rgba(22,224,164,.14),rgba(255,122,47,.06));
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:url('/assets/images/backpic/back-3.webp') right center/cover no-repeat;
  opacity:.14;
}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.3;margin-bottom:10px}
.cta-band p{color:var(--text-2);font-size:15px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{
  position:relative;background:var(--bg-1);
  border-top:1px solid var(--line);padding:56px 0 0;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--brand),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.5fr .8fr .8fr 1fr;gap:32px;padding-bottom:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{color:var(--text-2);font-size:13px;line-height:1.8;max-width:320px}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:16px}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:13px;color:var(--text-2);transition:color .2s}
.footer-col a:hover{color:var(--brand)}
.footer-qr{display:flex;align-items:center;gap:14px}
.footer-qr .qr-box{width:88px;height:88px;margin:0;border-radius:10px}
.footer-qr .qr-box i{font-size:40px}
.footer-qr small{color:var(--text-2);font-size:12px;line-height:1.7;display:block}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12px;color:var(--text-2);
}
.footer-bottom a{color:var(--text-2)}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-toggle{display:flex}
  .site-nav{
    position:fixed;top:76px;left:0;right:0;bottom:0;
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:0;margin-left:0;padding:22px 20px 44px;
    background:rgba(7,11,18,.97);
    backdrop-filter:blur(18px);
    border-top:1px solid var(--line);
    overflow-y:auto;
    opacity:0;transform:translateY(-12px);pointer-events:none;
    transition:opacity .25s ease,transform .25s ease;
  }
  .site-nav.is-open{opacity:1;transform:none;pointer-events:auto}
  .nav-links{flex-direction:column;align-items:stretch;gap:0}
  .nav-links li{border-bottom:1px solid var(--line)}
  .nav-links a{display:block;padding:16px 0;font-size:16px}
  .nav-links a::after{display:none}
  .nav-actions{flex-direction:column;align-items:stretch;gap:12px;margin-top:24px}
  .nav-actions .btn{width:100%}
  .shot{flex:0 0 calc((100% - 20px)/2)}
  .spec-grid{grid-template-columns:repeat(2,1fr)}
  .spec:nth-child(2n){border-right:0}
  .spec:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .voices-col:last-child{margin-top:0}
}
@media (max-width:767px){
  .section{padding:44px 0}
  .hero{padding:52px 0 56px}
  .hero-card{margin-top:32px}
  .shot{flex:0 0 86%}
  .voices{grid-template-columns:1fr}
  .dl-grid{grid-template-columns:1fr}
  .cta-band{padding:30px 24px}
  .dl-panel{padding:24px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:575px){
  .h2{font-size:24px}
  .hero-title{font-size:30px}
  .spec-grid{grid-template-columns:1fr}
  .spec{border-right:0;border-bottom:1px solid var(--line)}
  .spec:last-child{border-bottom:0}
  .badge{font-size:11px;padding:7px 12px}
  .news-mini{flex-direction:row}
}

/* roulang page: article */
:root{
  --bg-0:#070B12;
  --bg-1:#0C1220;
  --bg-2:#121A2B;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --brand:#16E0A4;
  --brand-deep:#0FD196;
  --brand-2:#FF7A2F;
  --text-1:#E9EFF7;
  --text-2:#97A6BC;
  --glass:rgba(255,255,255,.045);
  --radius-card:16px;
  --radius-btn:12px;
  --radius-input:10px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-hover:0 14px 34px rgba(0,0,0,.5);
  --container:1200px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Barlow Semi Condensed",ui-monospace,"SFMono-Regular",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--text-1);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand);}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;}
p{margin:0;}
.container{max-width:var(--container);margin:0 auto;padding:0 20px;width:100%;}
.num{font-family:var(--font-num);letter-spacing:.4px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;line-height:1;cursor:pointer;
  border:1px solid transparent;transition:transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease,filter .2s ease;
}
.btn i{font-size:13px;}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#05130E;
  box-shadow:0 0 0 1px rgba(22,224,164,.5),0 6px 22px rgba(22,224,164,.28);
}
.btn-primary:hover,.btn-primary:focus{
  color:#05130E;transform:translateY(-2px);filter:brightness(1.06);
  box-shadow:0 0 0 1px rgba(22,224,164,.6),0 10px 30px rgba(22,224,164,.34);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(22,224,164,.45),0 4px 14px rgba(22,224,164,.22);}
.btn-ghost{
  background:transparent;color:var(--text-1);border:1px solid var(--line-strong);
}
.btn-ghost:hover,.btn-ghost:focus{color:var(--brand);border-color:rgba(22,224,164,.45);background:rgba(22,224,164,.06);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:9px 16px;font-size:13px;border-radius:10px;}
.btn-lg{padding:15px 30px;font-size:16px;}
.btn:focus-visible,a:focus-visible,button:focus-visible,summary:focus-visible{
  outline:2px solid var(--brand);outline-offset:3px;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,18,.86);
  backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid var(--line);
}
.site-header::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--brand),rgba(22,224,164,0) 70%);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:74px;}
.brand{display:flex;flex-direction:column;gap:2px;line-height:1.15;}
.brand-name{font-size:19px;font-weight:800;letter-spacing:-.3px;color:var(--text-1);}
.brand-name em{font-style:normal;color:var(--brand);}
.brand-sub{font-size:11px;color:var(--text-2);letter-spacing:.5px;}
.brand:hover .brand-name{color:var(--text-1);}
.nav-toggle{
  display:none;width:44px;height:40px;border-radius:10px;background:var(--glass);
  border:1px solid var(--line);flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-1);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.site-nav{display:flex;align-items:center;gap:28px;}
.nav-links{display:flex;align-items:center;gap:24px;}
.nav-links a{
  position:relative;font-size:14px;color:var(--text-2);padding:6px 0;display:inline-block;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-links a:hover,.nav-links a:focus{color:var(--text-1);}
.nav-links a:hover::after,.nav-links a:focus::after,.nav-links a.is-active::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--text-1);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:10px;}

/* ---------- hero / page head ---------- */
.article-head{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,var(--bg-0),var(--bg-1));
  border-bottom:1px solid var(--line);
  padding:44px 0 40px;
}
.article-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:24px 24px;
  mask-image:radial-gradient(circle at 30% 20%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 30% 20%,#000 0%,transparent 72%);
}
.article-head .container{position:relative;z-index:2;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-2);margin-bottom:18px;}
.crumbs a{color:var(--text-2);}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:rgba(151,166,188,.55);}
.crumbs .current{color:var(--text-1);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.chip{
  display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.3px;
  color:var(--brand);background:rgba(22,224,164,.1);border:1px solid rgba(22,224,164,.28);
}
.chip-hot{color:var(--brand-2);background:rgba(255,122,47,.1);border-color:rgba(255,122,47,.3);}
.article-title{
  font-size:clamp(28px,3.6vw,44px);line-height:1.2;font-weight:800;letter-spacing:-.5px;
  margin:16px 0 18px;max-width:900px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:13px;color:var(--text-2);}
.meta-row span{display:inline-flex;align-items:center;gap:7px;}
.meta-row i{color:var(--brand);font-size:12px;}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:rgba(151,166,188,.5);}

/* ---------- layout ---------- */
.main-section{padding:52px 0 72px;background:var(--bg-0);}
.layout-grid{display:grid;grid-template-columns:minmax(0,1fr) 336px;gap:34px;align-items:start;}
.cover-wrap{
  border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-card);margin-bottom:28px;background:var(--bg-2);
}
.cover-wrap img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.cover-cap{font-size:12px;color:var(--text-2);padding:10px 16px;border-top:1px solid var(--line);background:rgba(255,255,255,.02);}

.article-body{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:34px 40px;
  box-shadow:var(--shadow-card);
  font-size:16px;
  line-height:1.8;
  color:var(--text-1);
  overflow-wrap:break-word;
  word-break:break-word;
}
.article-body h2{
  font-size:clamp(21px,2.2vw,27px);line-height:1.3;font-weight:700;margin:34px 0 16px;
  padding-left:14px;position:relative;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--brand);
}
.article-body h3{font-size:19px;font-weight:600;margin:26px 0 12px;color:var(--text-1);}
.article-body h4{font-size:16px;font-weight:600;margin:20px 0 10px;color:var(--brand);}
.article-body p{margin:0 0 18px;color:var(--text-1);}
.article-body p:last-child{margin-bottom:0;}
.article-body strong{color:#fff;font-weight:700;}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-deep);}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:2px;}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:10px;color:var(--text-1);}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;
  background:var(--brand);transform:rotate(45deg);
}
.article-body ol{counter-reset:item;padding-left:0;}
.article-body ol li{position:relative;padding-left:30px;margin-bottom:10px;counter-increment:item;}
.article-body ol li::before{
  content:counter(item);position:absolute;left:0;top:2px;width:20px;height:20px;border-radius:6px;
  background:rgba(22,224,164,.14);color:var(--brand);font-family:var(--font-num);font-size:12px;
  display:flex;align-items:center;justify-content:center;font-weight:700;
}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;border-left:3px solid var(--brand);
  background:var(--glass);border-radius:0 12px 12px 0;color:var(--text-2);font-size:15px;
}
.article-body blockquote p{color:var(--text-2);margin-bottom:0;}
.article-body img{border-radius:12px;margin:22px auto;box-shadow:var(--shadow-card);}
.article-body figure{margin:24px 0;}
.article-body figcaption{text-align:center;font-size:12.5px;color:var(--text-2);margin-top:8px;}
.article-body table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;}
.article-body th{background:rgba(255,255,255,.04);color:var(--text-1);font-weight:600;}
.article-body td{color:var(--text-2);}
.article-body code{
  font-family:var(--font-num);font-size:13.5px;background:rgba(255,255,255,.06);
  padding:2px 6px;border-radius:6px;color:var(--brand);
}
.article-body pre{
  background:#05090F;border:1px solid var(--line);border-radius:12px;padding:16px;
  overflow-x:auto;margin:20px 0;
}
.article-body pre code{background:none;padding:0;color:var(--text-2);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:28px 0;}

/* ---------- sidebar ---------- */
.side-col{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px;}
.side-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-card);
}
.side-card h3{
  font-size:14px;font-weight:700;letter-spacing:.5px;color:var(--text-1);
  display:flex;align-items:center;gap:8px;margin-bottom:14px;
}
.side-card h3::before{content:"";width:4px;height:14px;border-radius:2px;background:var(--brand);}
.side-links li{margin-bottom:4px;}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:14px;color:var(--text-2);padding:9px 10px;border-radius:10px;
  border:1px solid transparent;transition:all .2s ease;
}
.side-links a i{font-size:11px;opacity:.6;transition:transform .2s ease,opacity .2s ease;}
.side-links a:hover{color:var(--brand);background:rgba(22,224,164,.07);border-color:rgba(22,224,164,.22);}
.side-links a:hover i{opacity:1;transform:translateX(3px);}
.side-dl{background:linear-gradient(160deg,rgba(22,224,164,.12),rgba(255,255,255,.03));}
.side-dl p{font-size:13.5px;color:var(--text-2);line-height:1.7;margin-bottom:16px;}
.side-dl .btn{width:100%;}
.side-meta{display:flex;gap:16px;margin-top:16px;padding-top:14px;border-top:1px solid var(--line);}
.side-meta div{flex:1;}
.side-meta b{display:block;font-family:var(--font-num);font-size:18px;color:var(--brand);line-height:1.2;}
.side-meta span{font-size:11.5px;color:var(--text-2);}

/* ---------- related ---------- */
.related{padding:64px 0 0;background:var(--bg-0);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;flex-wrap:wrap;}
.section-title{font-size:clamp(22px,2.4vw,30px);font-weight:700;letter-spacing:-.3px;padding-left:14px;position:relative;}
.section-title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--brand);}
.section-title::after{content:"";display:inline-block;width:26px;height:1px;background:var(--text-2);opacity:.5;vertical-align:middle;margin-left:14px;}
.section-desc{font-size:14px;color:var(--text-2);max-width:520px;margin-top:8px;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.post-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s ease,border-color .2s ease;
  position:relative;
}
.post-card::before{
  content:"";position:absolute;top:0;left:0;width:52px;height:3px;background:var(--brand);
  clip-path:polygon(0 0,100% 0,84% 100%,0 100%);z-index:3;
}
.post-card:hover{
  transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(22,224,164,.35);
}
.post-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--bg-1);}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.post-card:hover .thumb img{transform:scale(1.04);}
.post-card .body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-card .body h3{font-size:16.5px;font-weight:600;line-height:1.5;color:var(--text-1);}
.post-card:hover .body h3{color:var(--brand);}
.post-card .body p{font-size:13.5px;color:var(--text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card .card-foot{display:flex;align-items:center;justify-content:space-between;padding:0 18px 16px;font-size:12px;color:var(--text-2);}
.post-card .card-foot i{color:var(--brand);transition:transform .2s ease;}
.post-card:hover .card-foot i{transform:translateX(4px);}

/* ---------- back / cta ---------- */
.back-row{display:flex;justify-content:center;padding:44px 0 0;}
.cta-band{
  margin-top:56px;padding:44px 0;background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--brand),rgba(22,224,164,0) 65%);
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;}
.cta-inner h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;margin-bottom:8px;}
.cta-inner p{font-size:14px;color:var(--text-2);max-width:620px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- empty ---------- */
.empty-box{
  background:var(--bg-2);border:1px dashed var(--line-strong);border-radius:var(--radius-card);
  padding:56px 28px;text-align:center;
}
.empty-box i{font-size:34px;color:rgba(22,224,164,.55);margin-bottom:16px;display:block;}
.empty-box h2{font-size:20px;margin-bottom:10px;}
.empty-box p{font-size:14px;color:var(--text-2);margin-bottom:22px;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--bg-1);border-top:1px solid var(--line);padding:56px 0 24px;position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--brand),rgba(22,224,164,0) 60%);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px;padding-bottom:36px;}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand p{font-size:13.5px;color:var(--text-2);line-height:1.8;max-width:360px;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text-1);margin-bottom:14px;letter-spacing:.4px;}
.footer-col ul li{margin-bottom:9px;}
.footer-col ul li a{font-size:13.5px;color:var(--text-2);}
.footer-col ul li a:hover{color:var(--brand);}
.footer-qr{display:flex;align-items:center;gap:12px;}
.qr-box{
  width:78px;height:78px;border-radius:12px;background:#fff;display:flex;align-items:center;justify-content:center;
  color:#0C1220;font-size:30px;flex-shrink:0;
}
.footer-qr small{font-size:12px;color:var(--text-2);line-height:1.6;}
.footer-bottom{
  border-top:1px solid var(--line);padding-top:18px;display:flex;flex-wrap:wrap;
  justify-content:space-between;gap:10px;font-size:12.5px;color:var(--text-2);
}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .layout-grid{grid-template-columns:minmax(0,1fr);}
  .side-col{position:static;order:2;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .article-body{padding:28px 26px;}
}
@media (max-width:899px){
  .nav-toggle{display:flex;}
  .site-nav{
    position:fixed;inset:74px 0 0 0;flex-direction:column;align-items:stretch;gap:0;
    background:rgba(7,11,18,.97);backdrop-filter:blur(16px);
    padding:22px 20px 40px;transform:translateY(-12px);opacity:0;visibility:hidden;
    transition:opacity .25s ease,transform .25s ease,visibility .25s ease;overflow-y:auto;
  }
  .site-nav.is-open{opacity:1;visibility:visible;transform:translateY(0);}
  .nav-links{flex-direction:column;align-items:stretch;gap:0;}
  .nav-links a{padding:15px 4px;font-size:16px;border-bottom:1px solid var(--line);color:var(--text-1);}
  .nav-links a::after{display:none;}
  .nav-links a.is-active{color:var(--brand);}
  .nav-actions{flex-direction:column;align-items:stretch;gap:12px;margin-top:22px;position:sticky;top:0;}
  .nav-actions .btn{width:100%;padding:14px 18px;font-size:15px;}
}
@media (max-width:767px){
  .article-head{padding:32px 0 30px;}
  .main-section{padding:36px 0 52px;}
  .article-body{padding:24px 18px;font-size:15.5px;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;min-width:150px;}
  .related{padding-top:44px;}
  .section-head{margin-bottom:20px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .brand-name{font-size:16.5px;}
  .brand-sub{font-size:10.5px;}
  .article-title{font-size:26px;}
  .meta-row{font-size:12px;gap:8px 14px;}
  .back-row .btn{width:100%;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: category1 */
:root{
  --bg-0:#070B12;
  --bg-1:#0C1220;
  --bg-2:#121A2B;
  --line:rgba(255,255,255,.08);
  --line-brand:rgba(22,224,164,.35);
  --brand:#16E0A4;
  --brand-deep:#0FD196;
  --brand-2:#FF7A2F;
  --text-1:#E9EFF7;
  --text-2:#97A6BC;
  --glass:rgba(255,255,255,.045);
  --radius-card:16px;
  --radius-btn:12px;
  --radius-input:10px;
  --radius-pill:999px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-hover:0 14px 34px rgba(0,0,0,.5);
  --container:1200px;
  --font-base:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Barlow Semi Condensed",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  font-family:var(--font-base);
  font-size:16px;
  line-height:1.75;
  color:var(--text-1);
  background:var(--bg-0);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand);}
button{font-family:inherit;}
h1,h2,h3,h4,h5,h6{
  font-family:var(--font-base);
  color:var(--text-1);
  margin:0 0 14px;
  font-weight:700;
  letter-spacing:0;
}
h1{font-size:clamp(30px,4.2vw,52px);line-height:1.15;font-weight:800;letter-spacing:-.5px;}
h2{font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:700;}
h3{font-size:19px;line-height:1.4;font-weight:600;}
p{margin:0 0 16px;color:var(--text-2);}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:rgba(22,224,164,.28);color:#fff;}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px;}
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--brand);color:#05130E;padding:10px 18px;border-radius:0 0 12px 0;font-weight:700;
}
.skip-link:focus{left:0;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
.section{padding:72px 0;position:relative;}
.section--alt{background:var(--bg-1);}
.section--deep{background:var(--bg-0);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:36px;
  flex-wrap:wrap;
}
.section-head .head-main{max-width:720px;}
.section-title{
  position:relative;
  padding-left:16px;
  margin-bottom:10px;
}
.section-title::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  transform:translateY(-50%);
  width:4px;height:18px;
  border-radius:2px;
  background:var(--brand);
}
.section-title::after{
  content:"";
  display:inline-block;
  width:56px;height:1px;
  margin-left:14px;
  vertical-align:middle;
  border-top:1px dashed rgba(255,255,255,.18);
}
.section-desc{
  color:var(--text-2);
  font-size:15px;
  line-height:1.8;
  margin:0;
  padding-left:16px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--brand);
  background:rgba(22,224,164,.08);
  border:1px solid rgba(22,224,164,.22);
  border-radius:var(--radius-pill);
  padding:5px 14px;
  margin-bottom:18px;
  font-weight:600;
}
/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 24px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:700;
  line-height:1.2;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(180deg,var(--brand),var(--brand-deep));
  color:#05130E;
  box-shadow:0 0 0 1px rgba(22,224,164,.5),0 6px 22px rgba(22,224,164,.28);
}
.btn-primary:hover{
  transform:translateY(-2px);
  filter:brightness(1.06);
  box-shadow:0 0 0 1px rgba(22,224,164,.6),0 10px 30px rgba(22,224,164,.34);
  color:#05130E;
}
.btn-primary:active{
  transform:translateY(0);
  box-shadow:0 0 0 1px rgba(22,224,164,.45),0 4px 14px rgba(22,224,164,.22);
}
.btn-ghost{
  background:rgba(255,255,255,.03);
  border-color:rgba(255,255,255,.16);
  color:var(--text-1);
}
.btn-ghost:hover{
  border-color:var(--line-brand);
  background:rgba(22,224,164,.08);
  color:var(--text-1);
  transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:10px;}
.btn-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--brand);
  font-weight:600;
  font-size:14px;
}
.btn-link i{transition:transform .2s var(--ease);}
.btn-link:hover i{transform:translateX(4px);}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
/* 头部导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(7,11,18,.88);
  backdrop-filter:blur(16px) saturate(130%);
  border-bottom:1px solid var(--line);
}
.site-header::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;
  height:1px;
  background:linear-gradient(90deg,var(--brand),rgba(22,224,164,0) 60%);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:76px;
}
.brand{
  display:flex;
  flex-direction:column;
  justify-content:center;
  line-height:1.2;
  gap:3px;
  flex-shrink:0;
}
.brand-name{
  font-size:19px;
  font-weight:800;
  letter-spacing:-.2px;
  color:var(--text-1);
}
.brand-name em{font-style:normal;color:var(--brand);}
.brand-sub{
  font-size:10px;
  letter-spacing:.08em;
  color:var(--text-2);
  text-transform:uppercase;
}
.site-nav{
  display:flex;
  align-items:center;
  gap:30px;
  flex:1;
  justify-content:flex-end;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:26px;
}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:14.5px;
  color:var(--text-2);
  font-weight:500;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-links a:hover{color:var(--text-1);}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--text-1);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:44px;height:44px;
  border-radius:10px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  cursor:pointer;
  padding:0 10px;
}
.nav-toggle span{
  display:block;
  height:2px;
  width:100%;
  border-radius:2px;
  background:var(--text-1);
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
/* 面包屑 */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  color:var(--text-2);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .current{color:var(--text-1);}
/* Hero */
.page-hero{
  position:relative;
  padding:56px 0 72px;
  background-color:var(--bg-0);
  background-image:linear-gradient(180deg,rgba(7,11,18,.86),rgba(7,11,18,.94)),url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:24px 24px;
  pointer-events:none;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 85%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 85%);
}
.page-hero .container{position:relative;z-index:2;}
.hero-title{margin-bottom:16px;}
.hero-title span{color:var(--brand);}
.hero-sub{
  font-size:18px;
  color:var(--text-1);
  font-weight:600;
  margin-bottom:14px;
}
.hero-lead{
  font-size:15.5px;
  line-height:1.85;
  color:var(--text-2);
  max-width:560px;
  margin-bottom:24px;
}
.hero-badges{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-bottom:28px;
}
.stat-badge{
  display:flex;
  flex-direction:column;
  gap:2px;
  padding:10px 16px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.035);
  min-width:104px;
}
.stat-badge strong{
  font-family:var(--font-num);
  font-size:19px;
  font-weight:700;
  color:var(--brand);
  letter-spacing:.02em;
  line-height:1.2;
}
.stat-badge span{font-size:11.5px;color:var(--text-2);letter-spacing:.04em;}
.hero-panel{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:18px;
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
}
.hero-panel::before{
  content:"";
  position:absolute;
  top:0;left:0;
  width:72px;height:3px;
  background:var(--brand-2);
  clip-path:polygon(0 0,100% 0,88% 100%,0 100%);
}
.hero-panel .panel-shot{
  border-radius:12px;
  overflow:hidden;
  border:1px solid var(--line);
  margin-bottom:16px;
  aspect-ratio:16/10;
  background:var(--bg-2);
}
.hero-panel .panel-shot img{width:100%;height:100%;object-fit:cover;}
.panel-list{display:grid;gap:10px;margin-bottom:18px;}
.panel-list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:13.5px;
  color:var(--text-2);
  line-height:1.6;
}
.panel-list i{color:var(--brand);font-size:13px;margin-top:4px;flex-shrink:0;}
.hero-panel .btn{width:100%;}
/* 卡片通用 */
.card{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px;
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  height:100%;
  position:relative;
}
.card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
  border-color:var(--line-brand);
}
.card-icon{
  width:44px;height:44px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:12px;
  border:1px solid rgba(22,224,164,.28);
  background:rgba(22,224,164,.09);
  color:var(--brand);
  font-size:17px;
  margin-bottom:16px;
}
.card h3{margin-bottom:8px;font-size:17.5px;}
.card p{font-size:14px;line-height:1.75;margin-bottom:0;color:var(--text-2);}
.card .card-meta{
  display:flex;
  align-items:center;
  gap:10px;
  margin-top:16px;
  font-size:12px;
  color:var(--text-2);
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  padding:3px 11px;
  border-radius:var(--radius-pill);
  background:rgba(22,224,164,.1);
  border:1px solid rgba(22,224,164,.24);
  color:var(--brand);
  font-weight:600;
  line-height:1.6;
}
.tag--orange{
  background:rgba(255,122,47,.1);
  border-color:rgba(255,122,47,.26);
  color:var(--brand-2);
}
.tag--plain{
  background:rgba(255,255,255,.05);
  border-color:var(--line);
  color:var(--text-2);
}
/* 准备板块 */
.prep-figure{
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  position:relative;
}
.prep-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;}
.prep-figure .fig-note{
  position:absolute;
  left:14px;bottom:14px;
  right:14px;
  background:rgba(7,11,18,.82);
  border:1px solid var(--line);
  border-radius:12px;
  padding:12px 14px;
  font-size:12.5px;
  color:var(--text-2);
  backdrop-filter:blur(8px);
}
.prep-figure .fig-note strong{color:var(--text-1);display:block;margin-bottom:2px;font-size:13px;}
/* 时间轴 */
.timeline{
  position:relative;
  padding-left:34px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:11px;top:8px;bottom:8px;
  width:2px;
  background:linear-gradient(180deg,var(--brand),rgba(22,224,164,.06));
  border-radius:2px;
}
.tl-item{
  position:relative;
  padding:0 0 26px 0;
}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";
  position:absolute;
  left:-34px;top:4px;
  width:24px;height:24px;
  border-radius:50%;
  border:2px solid rgba(22,224,164,.5);
  background:var(--bg-0);
  box-shadow:0 0 0 5px rgba(22,224,164,.06);
}
.tl-item::after{
  content:"";
  position:absolute;
  left:-24px;top:12px;
  width:4px;height:4px;
  border-radius:50%;
  background:var(--brand);
}
.tl-step-head{
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
  margin-bottom:8px;
}
.tl-step-head h3{margin:0;font-size:17.5px;}
.tl-time{
  font-family:var(--font-num);
  font-size:12.5px;
  color:var(--text-2);
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  padding:2px 10px;
}
.tl-item p{font-size:14px;margin:0;line-height:1.8;}
/* 场景卡 */
.scene-card{
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  gap:16px;
}
.scene-card .thumb{
  border-radius:12px;
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:16/9;
  background:var(--bg-1);
}
.scene-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.scene-card:hover .thumb img{transform:scale(1.04);}
/* 双列图文 */
.split-figure{
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.split-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:1/1;}
.check-list{display:grid;gap:16px;margin-top:6px;}
.check-list li{
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding:14px 16px;
  border:1px solid var(--line);
  border-radius:12px;
  background:rgba(255,255,255,.025);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.check-list li:hover{border-color:var(--line-brand);background:rgba(22,224,164,.05);}
.check-list .mark{
  width:26px;height:26px;
  flex-shrink:0;
  border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(22,224,164,.12);
  border:1px solid rgba(22,224,164,.3);
  color:var(--brand);
  font-size:12px;
  margin-top:2px;
}
.check-list h4{margin:0 0 4px;font-size:15px;font-weight:600;color:var(--text-1);}
.check-list p{margin:0;font-size:13.5px;line-height:1.7;color:var(--text-2);}
/* FAQ */
.faq-list{
  display:grid;
  gap:12px;
  max-width:900px;
}
.faq-item{
  border:1px solid var(--line);
  border-radius:14px;
  background:var(--bg-2);
  overflow:hidden;
  transition:border-color .2s var(--ease);
}
.faq-item[open]{border-color:var(--line-brand);background:rgba(18,26,43,.92);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  min-height:56px;
  padding:16px 20px;
  font-size:15.5px;
  font-weight:600;
  color:var(--text-1);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-item summary .plus{
  flex-shrink:0;
  width:26px;height:26px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  border:1px solid var(--line);
  color:var(--brand);
  font-size:12px;
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.faq-item[open] summary .plus{transform:rotate(45deg);border-color:rgba(22,224,164,.4);}
.faq-body{
  padding:0 20px 20px;
  border-top:1px solid var(--line);
  margin-top:0;
  padding-top:16px;
  font-size:14px;
  line-height:1.85;
  color:var(--text-2);
}
.faq-body p{margin:0 0 10px;font-size:14px;}
.faq-body p:last-child{margin-bottom:0;}
/* 下载组 */
.download-box{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:28px;
  box-shadow:var(--shadow-card);
}
.dl-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:22px;}
.dl-btn{
  display:flex;
  align-items:center;
  gap:12px;
  padding:14px 16px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.03);
  color:var(--text-1);
  transition:transform .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.dl-btn:hover{transform:translateY(-2px);border-color:var(--line-brand);background:rgba(22,224,164,.07);color:var(--text-1);}
.dl-btn i.lead{font-size:19px;color:var(--brand);}
.dl-btn .dl-text{display:flex;flex-direction:column;gap:1px;line-height:1.3;}
.dl-btn .dl-text b{font-size:14px;font-weight:700;}
.dl-btn .dl-text small{font-size:11.5px;color:var(--text-2);font-family:var(--font-num);letter-spacing:.02em;}
.dl-btn .dl-arrow{margin-left:auto;color:var(--text-2);font-size:13px;}
.dl-btn.is-main{
  background:linear-gradient(180deg,var(--brand),var(--brand-deep));
  border-color:transparent;
  color:#05130E;
  box-shadow:0 0 0 1px rgba(22,224,164,.5),0 6px 22px rgba(22,224,164,.26);
}
.dl-btn.is-main i.lead,.dl-btn.is-main .dl-arrow{color:#05130E;}
.dl-btn.is-main .dl-text small{color:rgba(5,19,14,.7);}
.dl-btn.is-main:hover{filter:brightness(1.05);color:#05130E;}
.qr-block{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:10px;
  padding:6px 0 0;
}
.qr-box{
  width:140px;height:140px;
  border-radius:12px;
  background:#fff;
  color:#0C1220;
  display:flex;align-items:center;justify-content:center;
  font-size:62px;
}
.qr-block small{font-size:12px;color:var(--text-2);text-align:center;line-height:1.6;}
.dl-tip{
  margin-top:18px;
  font-size:12.5px;
  color:var(--text-2);
  line-height:1.7;
}
/* 页脚 */
.site-footer{
  position:relative;
  background:var(--bg-1);
  padding:64px 0 28px;
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;
  height:1px;
  background:linear-gradient(90deg,rgba(22,224,164,0),var(--brand),rgba(22,224,164,0));
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:32px;
  padding-bottom:40px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:13.5px;line-height:1.8;color:var(--text-2);margin:0;max-width:360px;}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  color:var(--text-1);
  margin:0 0 16px;
  letter-spacing:.04em;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{font-size:13.5px;color:var(--text-2);}
.footer-col ul a:hover{color:var(--brand);}
.footer-qr{display:flex;align-items:center;gap:14px;}
.footer-qr .qr-box{
  width:76px;height:76px;
  border-radius:10px;
  background:#fff;
  color:#0C1220;
  display:flex;align-items:center;justify-content:center;
  font-size:32px;
  flex-shrink:0;
}
.footer-qr small{font-size:12px;color:var(--text-2);line-height:1.7;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding-top:22px;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:12.5px;
  color:var(--text-2);
}
.footer-bottom span{line-height:1.7;}
/* 响应式 */
@media screen and (max-width:1023px){
  .nav-toggle{display:flex;}
  .site-nav{
    position:fixed;
    left:0;right:0;
    top:76px;
    bottom:0;
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:0;
    padding:18px 20px 40px;
    background:rgba(7,11,18,.97);
    backdrop-filter:blur(18px) saturate(130%);
    border-top:1px solid var(--line);
    display:none;
    overflow-y:auto;
  }
  .site-nav.is-open{display:flex;}
  .nav-links{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin-bottom:20px;
  }
  .nav-links a{
    display:block;
    padding:15px 4px;
    font-size:16px;
    border-bottom:1px solid var(--line);
  }
  .nav-links a::after{display:none;}
  .nav-links a.is-active{color:var(--brand);}
  .nav-actions{
    flex-direction:column;
    align-items:stretch;
    gap:12px;
  }
  .nav-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1 / -1;}
  .section{padding:56px 0;}
  .page-hero{padding:40px 0 56px;}
}
@media screen and (max-width:767px){
  body{font-size:15px;}
  .section{padding:44px 0;}
  .page-hero{padding:32px 0 44px;}
  .hero-sub{font-size:16px;}
  .hero-lead{font-size:14.5px;}
  .hero-badges{gap:10px;}
  .stat-badge{flex:1 1 calc(50% - 10px);min-width:0;}
  .section-head{margin-bottom:26px;}
  .dl-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .card{padding:20px;}
  .download-box{padding:20px;}
}
@media screen and (max-width:519px){
  h1{font-size:30px;}
  .brand-name{font-size:17px;}
  .hero-panel{padding:14px;}
  .stat-badge strong{font-size:17px;}
  .btn{width:100%;}
  .hero .btn-row{flex-direction:column;align-items:stretch;}
  .btn-link{justify-content:center;}
}

/* roulang page: category2 */
:root{
  --bg-0:#070B12;
  --bg-1:#0C1220;
  --bg-2:#121A2B;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --brand:#16E0A4;
  --brand-dark:#0FD196;
  --brand-2:#FF7A2F;
  --text-1:#E9EFF7;
  --text-2:#97A6BC;
  --glass:rgba(255,255,255,.045);
  --radius-card:16px;
  --radius-btn:12px;
  --radius-pill:999px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-card-hover:0 14px 34px rgba(0,0,0,.5);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Barlow Semi Condensed",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--text-1);
  background:var(--bg-0);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
img{display:block;max-width:100%;height:auto;border-radius:12px;}
button{font-family:inherit;cursor:pointer;}
a:focus-visible,button:focus-visible,summary:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:3px;
  border-radius:6px;
}
::selection{background:rgba(22,224,164,.28);color:#fff;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,11,18,.88);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid var(--line);
}
.site-header::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,var(--brand),rgba(22,224,164,.12) 55%,transparent);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:74px;
  padding-top:12px;
  padding-bottom:12px;
}
.brand{display:inline-flex;flex-direction:column;line-height:1.2;gap:4px;}
.brand-name{font-size:20px;font-weight:800;letter-spacing:-.4px;color:var(--text-1);}
.brand-name em{font-style:normal;color:var(--brand);}
.brand-sub{font-size:11px;letter-spacing:.16em;color:var(--text-2);}
.site-nav{display:flex;align-items:center;gap:28px;flex:1;justify-content:flex-end;}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links a{
  display:inline-block;
  padding:9px 14px;
  font-size:14px;
  color:var(--text-2);
  border-radius:10px;
  position:relative;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:4px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-links a:hover{color:var(--text-1);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--text-1);font-weight:600;}
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:44px;height:44px;
  padding:0;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line-strong);
  border-radius:12px;
}
.nav-toggle span{display:block;width:18px;height:2px;margin:0 auto;background:var(--text-1);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 22px;
  font-size:15px;
  font-weight:700;
  line-height:1.2;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease);
}
.btn-sm{padding:10px 16px;font-size:13.5px;border-radius:10px;}
.btn-lg{padding:15px 28px;font-size:16px;}
.btn-primary{
  background:linear-gradient(180deg,var(--brand),var(--brand-dark));
  color:#05130E;
  box-shadow:0 0 0 1px rgba(22,224,164,.5),0 6px 22px rgba(22,224,164,.28);
}
.btn-primary:hover{
  transform:translateY(-2px);
  filter:brightness(1.06);
  box-shadow:0 0 0 1px rgba(22,224,164,.62),0 10px 30px rgba(22,224,164,.36);
}
.btn-primary:active{
  transform:translateY(0);
  box-shadow:0 0 0 1px rgba(22,224,164,.5),0 4px 12px rgba(22,224,164,.2);
}
.btn-ghost{
  background:rgba(255,255,255,.03);
  border-color:var(--line-strong);
  color:var(--text-1);
}
.btn-ghost:hover{
  background:rgba(22,224,164,.08);
  border-color:rgba(22,224,164,.55);
  transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(0);}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);
}
.btn-link:hover{color:#8cf7d6;}
.btn-link i{transition:transform .2s var(--ease);}
.btn-link:hover i{transform:translateX(3px);}

/* ============ 通用标签 / 标题 ============ */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;
  font-size:12px;
  line-height:1.5;
  border-radius:var(--radius-pill);
  border:1px solid rgba(22,224,164,.34);
  background:rgba(22,224,164,.1);
  color:#7ff0cb;
  white-space:nowrap;
}
.tag-warm{
  border-color:rgba(255,122,47,.4);
  background:rgba(255,122,47,.12);
  color:#ffb184;
}
.tag-mute{
  border-color:var(--line-strong);
  background:rgba(255,255,255,.04);
  color:var(--text-2);
}
.section{padding:72px 0;}
.section--alt{background:var(--bg-1);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:38px;
  flex-wrap:wrap;
}
.section-head h2{
  position:relative;
  padding-left:16px;
  font-size:clamp(24px,2.6vw,34px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.3px;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  transform:translateY(-50%);
  width:4px;height:26px;
  border-radius:2px;
  background:var(--brand);
}
.section-head h2::after{
  content:"";
  display:inline-block;
  width:34px;height:2px;
  margin-left:14px;
  vertical-align:middle;
  border-radius:2px;
  background:repeating-linear-gradient(90deg,var(--line-strong) 0 6px,transparent 6px 12px);
}
.section-head p{
  max-width:520px;
  font-size:14.5px;
  color:var(--text-2);
}
.lead{font-size:15.5px;color:var(--text-2);line-height:1.8;}

/* ============ 页头 ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:56px 0 68px;
  background:linear-gradient(180deg,var(--bg-0) 0%,var(--bg-1) 100%);
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  opacity:.5;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:24px 24px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 72%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 72%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  color:var(--text-2);
  margin-bottom:22px;
  flex-wrap:wrap;
}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:rgba(255,255,255,.24);}
.breadcrumb .current{color:var(--text-1);}
.hero-grid{align-items:center;}
.hero-title{
  font-size:clamp(30px,4.2vw,50px);
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.5px;
  margin:16px 0 14px;
}
.hero-title em{font-style:normal;color:var(--brand);}
.hero-sub{
  font-size:clamp(17px,1.6vw,20px);
  font-weight:600;
  color:var(--text-1);
  margin-bottom:14px;
}
.hero-desc{
  font-size:15px;
  color:var(--text-2);
  line-height:1.85;
  max-width:560px;
}
.hero-desc span{display:block;}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin:24px 0 26px;
}
.stat-chip{
  display:inline-flex;
  align-items:baseline;
  gap:8px;
  padding:9px 16px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
}
.stat-chip b{
  font-family:var(--font-num);
  font-size:16px;
  letter-spacing:.4px;
  color:var(--brand);
  font-weight:700;
}
.stat-chip span{font-size:12.5px;color:var(--text-2);}
.hero-cta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;}
.hero-card{
  position:relative;
  padding:18px;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow-card);
}
.hero-card .shot{
  border-radius:12px;
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-2);
}
.hero-card .shot img{width:100%;border-radius:0;aspect-ratio:16/10;object-fit:cover;}
.hero-card ul{margin:16px 0 18px;display:grid;gap:10px;}
.hero-card ul li{
  display:flex;
  gap:10px;
  font-size:13.5px;
  color:var(--text-2);
  line-height:1.6;
}
.hero-card ul li i{
  color:var(--brand);
  font-size:13px;
  margin-top:5px;
  flex:0 0 auto;
}
.hero-card .btn{width:100%;}

/* ============ 下载卡 ============ */
.dl-feature{
  position:relative;
  overflow:hidden;
  padding:26px;
  border-radius:var(--radius-card);
  border:1px solid rgba(22,224,164,.28);
  background:linear-gradient(160deg,rgba(22,224,164,.13),rgba(18,26,43,.92) 55%);
  box-shadow:var(--shadow-card);
  height:100%;
  display:flex;
  flex-direction:column;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.dl-feature:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);border-color:rgba(22,224,164,.5);}
.dl-feature .corner{
  position:absolute;top:0;left:0;width:56px;height:56px;
  background:linear-gradient(135deg,rgba(22,224,164,.55),transparent 62%);
  clip-path:polygon(0 0,100% 0,0 100%);
  pointer-events:none;
}
.dl-icon{
  width:52px;height:52px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:14px;
  border:1px solid rgba(22,224,164,.32);
  background:rgba(22,224,164,.12);
  color:var(--brand);
  font-size:22px;
  margin-bottom:16px;
}
.dl-feature h3{font-size:20px;font-weight:700;margin-bottom:6px;}
.dl-feature .dl-note{font-size:13.5px;color:var(--text-2);margin-bottom:18px;}
.kv-list{display:grid;gap:10px;margin-bottom:22px;}
.kv-list li{
  display:flex;justify-content:space-between;gap:12px;
  font-size:13px;
  padding-bottom:9px;
  border-bottom:1px dashed rgba(255,255,255,.09);
}
.kv-list li:last-child{border-bottom:0;padding-bottom:0;}
.kv-list .k{color:var(--text-2);}
.kv-list .v{font-family:var(--font-num);color:var(--text-1);letter-spacing:.3px;}
.dl-feature .btn{margin-top:auto;}

.dl-card{
  position:relative;
  overflow:hidden;
  height:100%;
  padding:20px;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--bg-2);
  box-shadow:var(--shadow-card);
  display:flex;
  flex-direction:column;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.dl-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-card-hover);
  border-color:rgba(22,224,164,.35);
}
.dl-card .dl-icon{width:44px;height:44px;font-size:19px;border-radius:12px;margin-bottom:14px;background:rgba(255,255,255,.05);border-color:var(--line-strong);color:var(--text-1);}
.dl-card h3{font-size:16.5px;font-weight:700;margin-bottom:8px;}
.dl-card .meta{font-size:12.5px;color:var(--text-2);line-height:1.7;margin-bottom:16px;}
.dl-card .btn{margin-top:auto;width:100%;}

/* ============ 版本对照卡 ============ */
.v-card{
  position:relative;
  height:100%;
  padding:24px;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--bg-2);
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.v-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);border-color:rgba(22,224,164,.35);}
.v-card .v-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;}
.v-card .v-no{
  font-family:var(--font-num);
  font-size:22px;
  font-weight:700;
  letter-spacing:.5px;
  color:var(--text-1);
}
.v-card .v-date{
  display:block;
  font-family:var(--font-num);
  font-size:12.5px;
  color:var(--text-2);
  letter-spacing:.4px;
  margin-bottom:14px;
}
.v-card h3{font-size:15px;font-weight:600;margin-bottom:8px;color:var(--text-1);}
.v-card p{font-size:13.5px;color:var(--text-2);line-height:1.75;}
.v-card .v-foot{
  margin-top:16px;
  padding-top:14px;
  border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--text-2);
}
.v-card .v-foot b{font-family:var(--font-num);color:var(--brand);letter-spacing:.4px;}

/* ============ 图文核对区 ============ */
.check-figure{
  position:relative;
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.check-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0;}
.check-figure .fig-cap{
  position:absolute;left:16px;bottom:16px;right:16px;
  padding:10px 14px;
  font-size:12.5px;
  color:var(--text-2);
  border-radius:10px;
  background:rgba(7,11,18,.78);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
}
.check-list{display:grid;gap:14px;}
.check-item{
  display:flex;
  gap:14px;
  padding:16px 18px;
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.025);
  transition:border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.check-item:hover{border-color:rgba(22,224,164,.35);background:rgba(22,224,164,.05);transform:translateX(3px);}
.check-item i{
  flex:0 0 auto;
  width:26px;height:26px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:8px;
  background:rgba(22,224,164,.14);
  color:var(--brand);
  font-size:12px;
  margin-top:2px;
}
.check-item h3{font-size:15px;font-weight:600;margin-bottom:4px;}
.check-item p{font-size:13.5px;color:var(--text-2);line-height:1.7;}

/* ============ FAQ ============ */
.faq-wrap{
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--bg-2);
  box-shadow:var(--shadow-card);
  padding:6px 24px;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:56px;
  padding:16px 0;
  font-size:15px;
  font-weight:600;
  color:var(--text-1);
  cursor:pointer;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-icon{
  flex:0 0 auto;
  width:26px;height:26px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
  border:1px solid var(--line-strong);
  color:var(--text-2);
  font-size:11px;
  transition:transform .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.faq-item[open] .faq-icon{transform:rotate(45deg);color:var(--brand);border-color:rgba(22,224,164,.5);}
.faq-answer{
  padding:0 0 18px;
  margin-top:-4px;
  font-size:14px;
  line-height:1.85;
  color:var(--text-2);
  border-top:1px solid var(--line);
  padding-top:14px;
}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:20px;
  padding:44px 36px;
  border:1px solid rgba(22,224,164,.24);
  background:linear-gradient(135deg,rgba(22,224,164,.14),rgba(12,18,32,.96) 58%);
  box-shadow:var(--shadow-card);
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-80px;top:-80px;
  width:280px;height:280px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(22,224,164,.22),transparent 68%);
  pointer-events:none;
}
.cta-band h2{
  font-size:clamp(22px,2.4vw,30px);
  line-height:1.3;
  font-weight:700;
  letter-spacing:-.3px;
  margin-bottom:12px;
}
.cta-band p{font-size:14.5px;color:var(--text-2);max-width:620px;margin-bottom:22px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.cta-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  background:var(--bg-0);
  border-top:1px solid var(--line);
  padding:56px 0 26px;
  margin-top:72px;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(22,224,164,.6),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:36px;
  padding-bottom:36px;
  border-bottom:1px solid var(--line);
}
.footer-brand p{
  margin-top:16px;
  font-size:13.5px;
  line-height:1.85;
  color:var(--text-2);
  max-width:360px;
}
.footer-col h4{
  font-size:13px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--text-1);
  margin-bottom:16px;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{font-size:13.5px;color:var(--text-2);}
.footer-col ul a:hover{color:var(--brand);}
.footer-qr{display:flex;align-items:center;gap:12px;}
.qr-box{
  width:76px;height:76px;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:#fff;
  color:#0A1220;
  font-size:34px;
  flex:0 0 auto;
}
.footer-qr small{font-size:12px;line-height:1.7;color:var(--text-2);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:22px;
  font-size:12.5px;
  color:rgba(151,166,188,.85);
}
.footer-bottom span{line-height:1.7;}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:899px){
  .nav-toggle{display:flex;}
  .site-nav{
    position:fixed;
    left:0;right:0;
    top:74px;
    bottom:0;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:18px;
    padding:24px 20px 40px;
    background:rgba(7,11,18,.97);
    -webkit-backdrop-filter:blur(16px) saturate(120%);
    backdrop-filter:blur(16px) saturate(120%);
    border-top:1px solid var(--line);
    transform:translateY(-10px);
    opacity:0;
    pointer-events:none;
    transition:opacity .22s var(--ease),transform .22s var(--ease);
    overflow-y:auto;
  }
  .site-nav.is-open{opacity:1;transform:none;pointer-events:auto;}
  .nav-links{flex-direction:column;align-items:stretch;gap:4px;width:100%;}
  .nav-links a{padding:14px 12px;font-size:15px;border-radius:12px;background:rgba(255,255,255,.03);}
  .nav-links a::after{display:none;}
  .nav-links a.is-active{background:rgba(22,224,164,.12);color:var(--brand);}
  .nav-actions{order:-1;flex-direction:column;align-items:stretch;width:100%;gap:12px;}
  .nav-actions .btn{width:100%;padding:14px;font-size:15px;}
  .section{padding:54px 0;}
  .page-hero{padding:36px 0 52px;}
  .hero-card{margin-top:32px;}
}
@media (max-width:767px){
  .section{padding:44px 0;}
  .section-head{margin-bottom:26px;gap:14px;}
  .section-head h2::after{display:none;}
  .hero-stats{gap:8px;}
  .stat-chip{padding:8px 13px;}
  .faq-wrap{padding:4px 18px;}
  .cta-band{padding:30px 22px;}
  .site-footer{margin-top:44px;padding:42px 0 22px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:575px){
  .brand-name{font-size:17px;}
  .brand-sub{font-size:10px;letter-spacing:.1em;}
  .hero-title{font-size:30px;}
  .btn-lg{padding:14px 20px;font-size:15px;}
  .hero-cta{width:100%;}
  .hero-cta .btn{width:100%;}
  .dl-feature{padding:20px;}
}

/* roulang page: category3 */
:root{
  --bg-0:#070B12;
  --bg-1:#0C1220;
  --bg-2:#121A2B;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(22,224,164,.35);
  --brand:#16E0A4;
  --brand-deep:#0FD196;
  --brand-2:#FF7A2F;
  --text-1:#E9EFF7;
  --text-2:#97A6BC;
  --glass:rgba(255,255,255,.045);
  --r-card:16px;
  --r-btn:12px;
  --r-input:10px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-hover:0 14px 34px rgba(0,0,0,.5);
  --hdr:76px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
a:focus-visible,button:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;}
.container{max-width:1200px;margin:0 auto;padding:0 20px;}
.mono{font-family:"Barlow Semi Condensed",ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.3px;}

/* ---------- grid helpers ---------- */
.grid-x.gx{margin:-11px;}
.grid-x.gx > .cell{padding:11px;}
.grid-x.gy > .cell{padding-bottom:22px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:700;line-height:1;cursor:pointer;
  transition:transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease,filter .2s ease;
}
.btn i{font-size:13px;}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#05130E;font-weight:700;
  box-shadow:0 0 0 1px rgba(22,224,164,.5),0 6px 22px rgba(22,224,164,.28);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 0 0 1px rgba(22,224,164,.6),0 10px 30px rgba(22,224,164,.35);color:#05130E;}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(22,224,164,.45),0 4px 14px rgba(22,224,164,.22);}
.btn-ghost{
  background:transparent;border-color:var(--line);color:var(--text-1);
}
.btn-ghost:hover{border-color:var(--line-strong);color:var(--brand);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:10px 16px;font-size:13px;}
.btn-lg{padding:16px 28px;font-size:16px;}
.btn-block{width:100%;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,18,.9);
  backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid var(--line);
}
.site-header::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--brand),rgba(22,224,164,0) 62%);
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;gap:26px;
  min-height:var(--hdr);
}
.brand{display:inline-flex;flex-direction:column;gap:2px;line-height:1.2;}
.brand-name{font-size:19px;font-weight:800;letter-spacing:-.3px;color:var(--text-1);}
.brand-name em{font-style:normal;color:var(--brand);}
.brand-sub{font-size:11px;color:var(--text-2);letter-spacing:.6px;}
.site-nav{display:flex;align-items:center;gap:28px;}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links a{
  display:inline-block;padding:9px 12px;font-size:14px;color:var(--text-2);
  border-radius:8px;position:relative;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;border-radius:2px;
}
.nav-links a:hover{color:var(--text-1);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--text-1);}
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:40px;padding:0 10px;border:1px solid var(--line);
  border-radius:10px;background:transparent;cursor:pointer;
}
.nav-toggle span{display:block;height:2px;width:100%;background:var(--text-1);border-radius:2px;transition:transform .22s ease,opacity .22s ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:64px 0 76px;
  background:linear-gradient(180deg,var(--bg-0),var(--bg-1));
  border-bottom:1px solid var(--line);
}
.page-hero-bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:.22;filter:saturate(90%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:24px 24px;
  opacity:.5;pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--text-2);margin-bottom:26px;}
.crumbs a{color:var(--text-2);}
.crumbs a:hover{color:var(--brand);}
.crumbs span{color:rgba(255,255,255,.25);}
.crumbs em{font-style:normal;color:var(--text-1);}
.page-hero h1{
  font-size:clamp(30px,4.2vw,52px);line-height:1.15;font-weight:800;letter-spacing:-.5px;
  margin-bottom:18px;
}
.hero-lead{font-size:clamp(17px,1.6vw,20px);color:var(--text-1);font-weight:600;margin-bottom:12px;}
.hero-desc{font-size:15.5px;color:var(--text-2);max-width:600px;line-height:1.8;margin-bottom:26px;}
.meta-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:999px;border:1px solid var(--line);
  background:var(--glass);font-size:12.5px;color:var(--text-2);
}
.badge i{color:var(--brand);font-size:12px;}
.badge b{font-family:"Barlow Semi Condensed",ui-monospace,monospace;color:var(--text-1);font-weight:600;font-size:13.5px;}
.hero-cta{display:flex;flex-wrap:wrap;align-items:center;gap:20px;}
.hero-link{font-size:14px;color:var(--text-2);display:inline-flex;align-items:center;gap:6px;}
.hero-link:hover{color:var(--brand);}
.hero-link i{font-size:11px;}
.hero-shot{
  border-radius:18px;overflow:hidden;border:1px solid var(--line);
  background:var(--glass);backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow-card);
}
.hero-shot img{width:100%;aspect-ratio:16/11;object-fit:cover;}

/* ---------- section base ---------- */
.section{padding:72px 0;}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{margin-bottom:38px;max-width:720px;}
.section-head h2{
  position:relative;padding-left:16px;
  font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.3px;
  margin-bottom:12px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:18px;border-radius:2px;background:var(--brand);
}
.section-head h2::after{
  content:"";display:inline-block;width:34px;height:1px;margin-left:14px;vertical-align:middle;
  border-bottom:1px dashed rgba(255,255,255,.22);
}
.section-head p{color:var(--text-2);font-size:15px;line-height:1.8;}

/* ---------- feature cards ---------- */
.feat-card{
  position:relative;height:100%;overflow:hidden;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  padding:26px;
  display:flex;flex-direction:column;gap:14px;
  transition:transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s ease,border-color .2s ease;
}
.feat-card::before{
  content:"";position:absolute;top:0;left:0;width:52px;height:3px;
  background:linear-gradient(90deg,var(--brand),rgba(22,224,164,.1));
  clip-path:polygon(0 0,100% 0,82% 100%,0 100%);
}
.feat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong);}
.feat-card h3{font-size:19px;font-weight:600;line-height:1.4;}
.feat-card p{font-size:14.5px;color:var(--text-2);line-height:1.8;}
.feat-icon{
  width:44px;height:44px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(22,224,164,.1);border:1px solid rgba(22,224,164,.28);color:var(--brand);font-size:17px;
}
.feat-card.is-main{padding:30px;}
.feat-card.is-main h3{font-size:22px;}
.feat-shot{border-radius:12px;overflow:hidden;border:1px solid var(--line);margin-top:4px;}
.feat-shot img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.feat-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:6px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 11px;border-radius:999px;font-size:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--text-2);
}
.tag .mono{color:var(--text-1);font-weight:600;}
.tag-hot{border-color:rgba(255,122,47,.4);color:var(--brand-2);background:rgba(255,122,47,.08);}

/* ---------- split blocks ---------- */
.split{
  border-radius:20px;border:1px solid var(--line);background:var(--bg-2);
  padding:32px;box-shadow:var(--shadow-card);height:100%;
}
.split h3{font-size:21px;font-weight:700;line-height:1.4;margin-bottom:14px;}
.split p{font-size:14.8px;color:var(--text-2);line-height:1.85;margin-bottom:16px;}
.check-list{display:flex;flex-direction:column;gap:12px;margin-top:6px;}
.check-list li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2);line-height:1.7;}
.check-list li i{color:var(--brand);font-size:12px;margin-top:7px;flex:0 0 auto;}
.check-list li b{color:var(--text-1);font-weight:600;}
.split-visual{position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line);height:100%;min-height:260px;}
.split-visual img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;}
.split-visual .visual-cap{
  position:absolute;left:0;right:0;bottom:0;padding:16px 18px;
  background:linear-gradient(180deg,rgba(7,11,18,0),rgba(7,11,18,.9));
  font-size:12.5px;color:var(--text-2);
}

/* ---------- spec matrix ---------- */
.spec-card{
  height:100%;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-card);
  transition:transform .2s cubic-bezier(.2,.7,.3,1),border-color .2s ease,box-shadow .2s ease;
}
.spec-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-hover);}
.spec-head{display:flex;align-items:center;gap:10px;padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:14px;}
.spec-head i{font-size:18px;color:var(--brand);}
.spec-head h3{font-size:16.5px;font-weight:600;}
.spec-list{display:flex;flex-direction:column;}
.spec-list > div{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:9px 0;border-bottom:1px dashed rgba(255,255,255,.07);}
.spec-list > div:last-child{border-bottom:0;}
.spec-list dt{font-size:13px;color:var(--text-2);}
.spec-list dd{margin:0;font-size:13.5px;color:var(--text-1);font-family:"Barlow Semi Condensed",ui-monospace,monospace;font-weight:600;}
.spec-note{font-size:12px;color:var(--text-2);margin-top:18px;line-height:1.7;}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:28px;}
.timeline::before{
  content:"";position:absolute;left:6px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,rgba(22,224,164,.6),rgba(22,224,164,.05));
  border-radius:2px;
}
.tl-item{position:relative;padding:0 0 26px 0;}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  position:absolute;left:-28px;top:9px;width:14px;height:14px;border-radius:50%;
  background:var(--bg-0);border:2px solid var(--brand);box-shadow:0 0 0 4px rgba(22,224,164,.1);
}
.tl-body{background:var(--bg-2);border:1px solid var(--line);border-radius:14px;padding:18px 20px;}
.tl-head{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:8px;}
.tl-ver{font-family:"Barlow Semi Condensed",ui-monospace,monospace;font-size:14px;font-weight:700;color:var(--brand);}
.tl-date{font-size:12px;color:var(--text-2);}
.tl-body h3{font-size:16px;font-weight:600;margin-bottom:6px;}
.tl-body p{font-size:14px;color:var(--text-2);line-height:1.8;}

/* ---------- download block ---------- */
.dl-panel{
  border-radius:20px;border:1px solid var(--line);
  background:var(--glass);backdrop-filter:blur(14px) saturate(120%);
  padding:34px;box-shadow:var(--shadow-card);
}
.dl-panel h2{
  font-size:clamp(22px,2.4vw,30px);font-weight:700;margin-bottom:10px;line-height:1.3;
}
.dl-panel > p{font-size:14.5px;color:var(--text-2);margin-bottom:24px;}
.dl-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;}
.dl-btn{
  display:flex;align-items:center;gap:12px;
  padding:14px 16px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:rgba(255,255,255,.02);
  transition:transform .2s ease,border-color .2s ease,background .2s ease;
}
.dl-btn i{font-size:19px;color:var(--text-1);}
.dl-btn .dl-txt{display:flex;flex-direction:column;line-height:1.3;}
.dl-btn .dl-txt b{font-size:14px;font-weight:600;color:var(--text-1);}
.dl-btn .dl-txt small{font-size:11.5px;color:var(--text-2);font-family:"Barlow Semi Condensed",ui-monospace,monospace;}
.dl-btn .dl-arrow{margin-left:auto;color:var(--text-2);font-size:13px;}
.dl-btn:hover{transform:translateY(-2px);border-color:var(--line-strong);background:rgba(22,224,164,.06);}
.dl-btn:hover .dl-arrow{color:var(--brand);}
.dl-btn.is-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  border-color:transparent;box-shadow:0 0 0 1px rgba(22,224,164,.5),0 6px 22px rgba(22,224,164,.28);
}
.dl-btn.is-primary i,.dl-btn.is-primary .dl-txt b,.dl-btn.is-primary .dl-arrow{color:#05130E;}
.dl-btn.is-primary .dl-txt small{color:rgba(5,19,14,.7);}
.dl-btn.is-primary:hover{filter:brightness(1.06);}
.dl-side{display:flex;flex-direction:column;align-items:center;gap:10px;}
.qr-box{
  width:140px;height:140px;border-radius:12px;background:#fff;
  display:flex;align-items:center;justify-content:center;color:#0C1220;font-size:52px;
}
.dl-side small{font-size:12px;color:var(--text-2);text-align:center;line-height:1.6;}
.dl-compat{font-size:12px;color:var(--text-2);margin-top:18px;line-height:1.7;}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,rgba(22,224,164,.1),rgba(255,122,47,.06) 70%,transparent);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:56px 0;
}
.cta-band::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--brand),transparent 70%);
}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.35;margin-bottom:8px;}
.cta-inner p{font-size:14.5px;color:var(--text-2);}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- footer ---------- */
.site-footer{
  position:relative;background:var(--bg-1);border-top:1px solid var(--line);
  padding:58px 0 0;margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--brand),rgba(22,224,164,0) 70%);
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:36px;
  padding-bottom:40px;
}
.footer-brand p{font-size:13.5px;color:var(--text-2);line-height:1.85;margin-top:14px;max-width:320px;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:13.5px;color:var(--text-2);}
.footer-col a:hover{color:var(--brand);}
.footer-qr{display:flex;align-items:center;gap:12px;}
.footer-qr .qr-box{width:84px;height:84px;border-radius:10px;font-size:32px;}
.footer-qr small{font-size:11.5px;color:var(--text-2);line-height:1.7;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding:20px 0 26px;border-top:1px solid var(--line);
  font-size:12px;color:var(--text-2);
}

/* ---------- responsive ---------- */
@media screen and (max-width:1023px){
  :root{--hdr:70px;}
  .nav-toggle{display:flex;}
  .site-nav{
    position:fixed;top:var(--hdr);left:0;right:0;bottom:0;
    flex-direction:column;align-items:stretch;gap:18px;
    padding:22px 20px 44px;
    background:rgba(7,11,18,.98);
    backdrop-filter:blur(18px) saturate(120%);
    border-top:1px solid var(--line);
    overflow-y:auto;
    opacity:0;transform:translateY(-10px);pointer-events:none;
    transition:opacity .22s ease,transform .22s ease;
  }
  .site-nav.is-open{opacity:1;transform:none;pointer-events:auto;}
  .nav-links{flex-direction:column;align-items:stretch;gap:0;order:2;}
  .nav-links a{padding:15px 4px;font-size:16px;border-bottom:1px solid var(--line);border-radius:0;}
  .nav-links a::after{display:none;}
  .nav-links a.is-active{color:var(--brand);}
  .nav-actions{order:1;flex-direction:column;align-items:stretch;gap:10px;}
  .nav-actions .btn{width:100%;padding:14px 18px;font-size:15px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1 / -1;}
  .section{padding:56px 0;}
  .page-hero{padding:46px 0 56px;}
}
@media screen and (max-width:767px){
  .section{padding:44px 0;}
  .page-hero{padding:38px 0 46px;}
  .hero-desc{font-size:14.5px;}
  .meta-badges{gap:8px;}
  .badge{font-size:11.5px;padding:7px 11px;}
  .hero-shot{margin-top:26px;}
  .split{padding:24px;}
  .split-visual{min-height:200px;margin-top:8px;}
  .dl-panel{padding:24px;}
  .dl-grid{grid-template-columns:1fr;}
  .dl-side{flex-direction:row;justify-content:flex-start;margin-top:20px;}
  .qr-box{width:110px;height:110px;font-size:42px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .feat-card{padding:22px;}
  .feat-card.is-main{padding:24px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}
@media screen and (max-width:519px){
  .container{padding:0 16px;}
  .brand-name{font-size:17px;}
  .brand-sub{font-size:10px;}
  .btn{padding:12px 18px;font-size:14px;}
  .btn-lg{padding:14px 22px;font-size:15px;}
  .hero-cta{gap:14px;}
  .timeline{padding-left:24px;}
  .tl-dot{left:-24px;}
  .spec-card{padding:20px;}
}

/* roulang page: category4 */
:root{
  --bg-0:#070B12;
  --bg-1:#0C1220;
  --bg-2:#121A2B;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(22,224,164,.35);
  --brand:#16E0A4;
  --brand-deep:#0FD196;
  --brand-2:#FF7A2F;
  --text-1:#E9EFF7;
  --text-2:#97A6BC;
  --glass:rgba(255,255,255,.045);
  --radius-card:16px;
  --radius-btn:12px;
  --radius-pill:999px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-hover:0 14px 34px rgba(0,0,0,.5);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Barlow Semi Condensed",ui-monospace,"SFMono-Regular",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.btn-sm{padding:10px 18px;font-size:13.5px;border-radius:10px}
.btn-primary{
  background:linear-gradient(180deg,var(--brand),var(--brand-deep));
  color:#05130E;font-weight:700;
  box-shadow:0 0 0 1px rgba(22,224,164,.45),0 6px 22px rgba(22,224,164,.28);
}
.btn-primary:hover{
  color:#05130E;transform:translateY(-2px);filter:brightness(1.06);
  box-shadow:0 0 0 1px rgba(22,224,164,.6),0 10px 30px rgba(22,224,164,.34);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(22,224,164,.45),0 4px 14px rgba(22,224,164,.22)}
.btn-ghost{
  background:transparent;color:var(--text-1);border-color:rgba(255,255,255,.16);
}
.btn-ghost:hover{color:var(--brand);border-color:var(--line-strong);background:rgba(22,224,164,.06);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-link{
  display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;color:var(--brand);
  padding:12px 4px;transition:gap .2s var(--ease),color .2s var(--ease);
}
.btn-link:hover{gap:12px;color:var(--brand-deep)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,11,18,.88);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.site-header::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,var(--brand),rgba(22,224,164,0) 70%);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px}
.brand{display:flex;flex-direction:column;gap:3px;line-height:1.1;flex-shrink:0}
.brand-name{font-size:19px;font-weight:800;letter-spacing:-.4px;color:var(--text-1)}
.brand-name em{font-style:normal;color:var(--brand)}
.brand-sub{font-size:11px;color:var(--text-2);letter-spacing:.6px}
.site-nav{display:flex;align-items:center;gap:26px;flex:1;justify-content:flex-end}
.nav-links{display:flex;align-items:center;gap:24px}
.nav-links a{
  position:relative;display:inline-block;padding:8px 0;
  font-size:14.5px;color:var(--text-2);font-weight:500;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.nav-links a:hover{color:var(--text-1)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--text-1);font-weight:600}
.nav-links a.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);transition:transform .24s var(--ease),opacity .24s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 页头 Banner ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:58px 0 62px;
  background:linear-gradient(180deg,var(--bg-0),var(--bg-1));
  border-bottom:1px solid var(--line);
}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background:url(/assets/images/backpic/back-2.webp) center/cover no-repeat;
  opacity:.26;
}
.page-hero .hero-mask{
  position:absolute;inset:0;
  background:
    radial-gradient(120% 90% at 15% 0%,rgba(7,11,18,.55),rgba(7,11,18,.94) 68%),
    linear-gradient(180deg,rgba(7,11,18,.7),rgba(12,18,32,.96));
}
.page-hero .hero-grid-lines{
  position:absolute;inset:0;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:24px 24px;
  mask-image:radial-gradient(80% 70% at 70% 20%,#000 20%,transparent 80%);
  -webkit-mask-image:radial-gradient(80% 70% at 70% 20%,#000 20%,transparent 80%);
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--text-2);margin-bottom:22px}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{opacity:.5}
.breadcrumb .cur{color:var(--text-1)}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--radius-pill);
  background:rgba(22,224,164,.1);border:1px solid rgba(22,224,164,.28);
  color:var(--brand);font-size:12.5px;font-weight:600;letter-spacing:.4px;margin-bottom:18px;
}
.hero-title{
  font-size:clamp(30px,4.2vw,52px);line-height:1.15;font-weight:800;letter-spacing:-.5px;
  color:var(--text-1);margin-bottom:16px;
}
.hero-title em{font-style:normal;color:var(--brand)}
.hero-sub{font-size:clamp(16px,1.7vw,19px);color:var(--text-1);font-weight:600;margin-bottom:14px;line-height:1.5}
.hero-desc{font-size:15.5px;color:var(--text-2);line-height:1.85;max-width:640px;margin-bottom:26px}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px}
.stat-badge{
  display:inline-flex;align-items:baseline;gap:8px;
  padding:9px 16px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line);
}
.stat-badge b{font-family:var(--font-num);font-size:19px;font-weight:700;color:var(--brand);letter-spacing:.5px}
.stat-badge span{font-size:12.5px;color:var(--text-2)}
.hero-cta{display:flex;flex-wrap:wrap;align-items:center;gap:16px}

/* Hero 右侧入口卡 */
.entry-card{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:18px;
  box-shadow:var(--shadow-card);
  position:relative;overflow:hidden;
}
.entry-card::before{
  content:"";position:absolute;left:0;top:0;width:56px;height:3px;
  background:var(--brand);clip-path:polygon(0 0,100% 0,100% 100%,14px 100%);
}
.entry-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:12px;border:1px solid var(--line)}
.entry-card h3{font-size:16px;font-weight:700;margin:16px 0 12px;color:var(--text-1)}
.entry-list{display:flex;flex-direction:column;gap:10px;margin-bottom:18px}
.entry-list li{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--text-2);line-height:1.6}
.entry-list i{color:var(--brand);font-size:13px;margin-top:4px}
.entry-card .btn{width:100%}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:38px;flex-wrap:wrap}
.sec-title{font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.3px;display:flex;align-items:center}
.sec-title::before{
  content:"";display:inline-block;width:4px;height:18px;border-radius:2px;background:var(--brand);
  margin-right:12px;flex-shrink:0;
}
.sec-title .dash{display:inline-block;width:26px;height:0;border-top:2px dashed rgba(22,224,164,.35);margin-left:14px;vertical-align:middle}
.sec-sub{font-size:14.5px;color:var(--text-2);margin-top:10px;max-width:680px;line-height:1.8}

/* ---------- 快捷分流卡 ---------- */
.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.quick-card{
  padding:24px;border-radius:var(--radius-card);
  background:var(--bg-2);border:1px solid var(--line);
  box-shadow:var(--shadow-card);position:relative;overflow:hidden;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.quick-card::after{
  content:"";position:absolute;right:-40px;top:-40px;width:120px;height:120px;border-radius:50%;
  background:radial-gradient(circle,rgba(22,224,164,.16),transparent 70%);pointer-events:none;
}
.quick-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.quick-icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(22,224,164,.1);border:1px solid rgba(22,224,164,.28);color:var(--brand);font-size:18px;margin-bottom:16px;
}
.quick-card h3{font-size:18px;font-weight:600;margin-bottom:10px}
.quick-card p{font-size:14px;color:var(--text-2);line-height:1.8;margin-bottom:14px}

/* ---------- 问题条目卡 ---------- */
.cards-grid .cell{display:flex}
.q-card{
  display:flex;flex-direction:column;width:100%;
  padding:22px;border-radius:var(--radius-card);
  background:var(--bg-2);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  position:relative;overflow:hidden;
}
.q-card::before{
  content:"";position:absolute;left:0;top:0;width:52px;height:3px;background:var(--brand);
  clip-path:polygon(0 0,100% 0,100% 100%,12px 100%);opacity:.85;
}
.q-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.q-card:hover .q-arrow{color:var(--brand);transform:translateX(4px)}
.q-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.q-cat{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:600;color:var(--brand);
  background:rgba(22,224,164,.1);border:1px solid rgba(22,224,164,.24);
}
.q-pin{color:var(--brand-2);font-size:12px;opacity:.9}
.q-card h3{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:10px}
.q-card p{font-size:13.8px;color:var(--text-2);line-height:1.85;margin-bottom:16px;flex:1}
.q-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid var(--line)}
.q-meta{font-size:12px;color:var(--text-2);font-family:var(--font-num);letter-spacing:.4px}
.q-arrow{color:var(--text-2);font-size:14px;transition:transform .2s var(--ease),color .2s var(--ease)}

/* ---------- FAQ 双列 ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px 24px}
.faq-item{
  background:var(--bg-2);border:1px solid var(--line);border-radius:14px;overflow:hidden;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item:hover{border-color:rgba(22,224,164,.24)}
.faq-item[open]{border-color:var(--line-strong);box-shadow:0 10px 26px rgba(0,0,0,.4)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:17px 18px;min-height:56px;font-size:15px;font-weight:600;color:var(--text-1);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-ic{
  flex-shrink:0;width:24px;height:24px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.16);color:var(--text-2);font-size:11px;
  transition:transform .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.faq-item[open] .faq-ic{transform:rotate(45deg);color:var(--brand);border-color:var(--line-strong)}
.faq-answer{
  padding:0 18px 18px;font-size:14px;line-height:1.85;color:var(--text-2);
  border-top:1px solid var(--line);padding-top:14px;
}
.faq-answer strong{color:var(--text-1);font-weight:600}

/* ---------- 处理流程时间轴 ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;counter-reset:flow}
.flow-step{
  position:relative;padding:26px 22px 24px;border-radius:var(--radius-card);
  background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.012));
  border:1px solid var(--line);
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.flow-step:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.flow-num{
  font-family:var(--font-num);font-size:32px;font-weight:700;color:rgba(22,224,164,.35);
  line-height:1;margin-bottom:12px;letter-spacing:1px;
}
.flow-step h3{font-size:17px;font-weight:600;margin-bottom:10px}
.flow-step p{font-size:14px;color:var(--text-2);line-height:1.85}

/* ---------- 简化下载区 ---------- */
.dl-panel{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line);border-radius:20px;
  padding:34px;
  box-shadow:var(--shadow-card);
  position:relative;overflow:hidden;
}
.dl-panel::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,var(--brand),rgba(22,224,164,0) 65%);
}
.dl-panel h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;margin-bottom:12px;line-height:1.3}
.dl-panel .dl-lead{font-size:14.5px;color:var(--text-2);line-height:1.85;margin-bottom:24px;max-width:640px}
.dl-btns{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.dl-btn{
  display:flex;align-items:center;gap:12px;
  padding:13px 16px;border-radius:var(--radius-btn);
  background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.14);
  transition:transform .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.dl-btn i.pf{font-size:19px;color:var(--text-1);width:22px;text-align:center}
.dl-btn .dl-txt{display:flex;flex-direction:column;line-height:1.35;flex:1;text-align:left}
.dl-btn .dl-txt b{font-size:14px;font-weight:600;color:var(--text-1)}
.dl-btn .dl-txt small{font-size:11.5px;color:var(--text-2);font-family:var(--font-num);letter-spacing:.3px}
.dl-btn i.go{font-size:13px;color:var(--text-2);transition:color .2s var(--ease),transform .2s var(--ease)}
.dl-btn:hover{transform:translateY(-2px);border-color:var(--line-strong);background:rgba(22,224,164,.06)}
.dl-btn:hover i.go{color:var(--brand);transform:translateX(3px)}
.dl-btn.is-main{
  background:linear-gradient(180deg,var(--brand),var(--brand-deep));
  border-color:transparent;
  box-shadow:0 0 0 1px rgba(22,224,164,.45),0 8px 24px rgba(22,224,164,.26);
}
.dl-btn.is-main .dl-txt b,.dl-btn.is-main i.pf,.dl-btn.is-main i.go{color:#05130E}
.dl-btn.is-main .dl-txt small{color:rgba(5,19,14,.72)}
.dl-btn.is-main:hover{filter:brightness(1.06);background:linear-gradient(180deg,var(--brand),var(--brand-deep))}
.dl-qr{display:flex;flex-direction:column;align-items:center;gap:12px}
.qr-box{
  width:140px;height:140px;border-radius:12px;background:#fff;color:#0C1220;
  display:flex;align-items:center;justify-content:center;font-size:56px;
  box-shadow:0 10px 26px rgba(0,0,0,.45);
}
.dl-qr small{font-size:12px;color:var(--text-2);text-align:center;line-height:1.6}
.dl-note{margin-top:22px;padding-top:18px;border-top:1px solid var(--line);font-size:12.5px;color:var(--text-2);line-height:1.8}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:20px;padding:40px;
  background:
    radial-gradient(90% 140% at 100% 0%,rgba(22,224,164,.16),transparent 62%),
    linear-gradient(180deg,var(--bg-2),var(--bg-1));
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(21px,2.3vw,28px);font-weight:700;line-height:1.35;margin-bottom:10px}
.cta-band p{font-size:14.5px;color:var(--text-2);line-height:1.8;max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--bg-1);border-top:1px solid var(--line);
  padding:60px 0 26px;margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(22,224,164,0),var(--brand),rgba(22,224,164,0));
  opacity:.6;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding-bottom:38px;border-bottom:1px solid var(--line)}
.footer-brand p{font-size:13.5px;color:var(--text-2);line-height:1.9;margin-top:16px;max-width:340px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:16px;letter-spacing:.3px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col ul a{font-size:13.5px;color:var(--text-2)}
.footer-col ul a:hover{color:var(--brand)}
.footer-qr{display:flex;align-items:center;gap:12px}
.footer-qr .qr-box{width:76px;height:76px;font-size:30px;border-radius:10px;box-shadow:none}
.footer-qr small{font-size:12px;color:var(--text-2);line-height:1.7}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:22px;font-size:12.5px;color:var(--text-2);line-height:1.8;
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .site-nav{
    position:fixed;left:0;right:0;top:76px;bottom:0;
    flex-direction:column;align-items:stretch;justify-content:flex-start;gap:18px;
    padding:22px 20px 48px;
    background:rgba(7,11,18,.97);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    border-top:1px solid var(--line);
    overflow-y:auto;
    opacity:0;transform:translateY(-12px);pointer-events:none;
    transition:opacity .24s var(--ease),transform .24s var(--ease);
  }
  .site-nav.is-open{opacity:1;transform:none;pointer-events:auto}
  .nav-toggle{display:flex;order:3}
  .nav-wrap{flex-wrap:nowrap}
  .nav-links{flex-direction:column;align-items:stretch;gap:2px;width:100%}
  .nav-links a{display:block;padding:14px 4px;font-size:16px;border-bottom:1px solid var(--line)}
  .nav-links a::after{display:none}
  .nav-links a.is-active{color:var(--brand)}
  .nav-actions{flex-direction:column;align-items:stretch;width:100%;gap:12px;margin-top:6px}
  .nav-actions .btn{width:100%;padding:14px 18px;font-size:15px}
  .quick-grid{grid-template-columns:1fr 1fr}
  .flow-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .section{padding:56px 0}
}
@media (max-width:767px){
  .nav-wrap{min-height:68px}
  .site-nav{top:68px}
  .page-hero{padding:40px 0 46px}
  .breadcrumb{font-size:12px;margin-bottom:16px}
  .hero-desc{font-size:14.5px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
  .hero-cta .btn-link{justify-content:center}
  .quick-grid,.faq-grid,.dl-btns{grid-template-columns:1fr}
  .section{padding:44px 0}
  .sec-head{margin-bottom:26px}
  .dl-panel{padding:24px}
  .cta-band{padding:26px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:519px){
  .brand-name{font-size:17px}
  .brand-sub{font-size:10.5px}
  .stat-badge{padding:8px 13px}
  .stat-badge b{font-size:17px}
  .dl-qr{width:100%}
}