/* roulang page: index */
:root{
  --bg-0:#060B14;
  --bg-1:#0A1220;
  --bg-2:#101B2E;
  --primary:#2B7FFF;
  --primary-600:#1E63E9;
  --primary-soft:rgba(43,127,255,.14);
  --accent:#35D6C0;
  --warn:#FF8A3D;
  --text-1:#E8EEF7;
  --text-2:#A7B8CE;
  --text-3:#6D7F96;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --glass:rgba(16,27,46,.55);
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --r-pill:999px;
  --s1:0 2px 8px rgba(0,0,0,.25);
  --s2:0 12px 32px rgba(0,0,0,.35);
  --s3:0 18px 48px rgba(0,0,0,.45),0 0 0 1px var(--line-strong);
  --gap:24px;
  --bs-primary:#2B7FFF;
  --bs-primary-rgb:43,127,255;
  --bs-body-bg:#0A1220;
  --bs-body-color:#E8EEF7;
  --bs-border-radius:16px;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-link-color:#35D6C0;
  --bs-link-hover-color:#E8EEF7;
  --bs-font-sans-serif:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC",sans-serif;
  --mono:"SF Mono",ui-monospace,"JetBrains Mono",Consolas,monospace;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  padding-top:72px;
  background:var(--bg-1);
  color:var(--text-1);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.75;
  -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:var(--accent);text-decoration:none;transition:color .2s ease,transform .2s ease;}
a:hover{color:var(--text-1);}
img{max-width:100%;display:block;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:40px;}
.section-title{font-size:clamp(22px,2.6vw,32px);line-height:1.35;font-weight:650;letter-spacing:-.01em;}
.section-sub{margin-top:10px;color:var(--text-2);font-size:15px;max-width:640px;}
.link-more{font-size:14px;color:var(--accent);display:inline-flex;align-items:center;gap:6px;white-space:nowrap;}
.link-more:hover{color:var(--text-1);}
.link-more svg{transition:transform .2s ease;}
.link-more:hover svg{transform:translateX(4px);}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.02em;color:var(--accent);padding:6px 14px;border-radius:var(--r-pill);background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px) saturate(140%);}

/* ---------- header ---------- */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:1040;height:72px;
  background:rgba(10,18,32,.72);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:height .25s ease,background .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{height:60px;background:rgba(6,11,20,.92);border-bottom-color:rgba(53,214,192,.42);}
.site-header::after{content:"";position:absolute;inset:0 0 auto 0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.12),transparent);}
.header-inner{height:100%;display:flex;align-items:center;gap:32px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--text-1);font-weight:700;font-size:17px;letter-spacing:.01em;white-space:nowrap;}
.brand:hover{color:var(--text-1);}
.brand-mark{display:grid;place-items:center;width:36px;height:36px;border-radius:12px;background:linear-gradient(135deg,rgba(43,127,255,.22),rgba(53,214,192,.12));border:1px solid var(--line-strong);color:var(--accent);flex:none;}
.main-nav{display:flex;align-items:center;gap:32px;margin-left:auto;}
.nav-link{position:relative;font-size:15px;color:var(--text-2);padding:6px 0;}
.nav-link::after{content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;background:var(--accent);transition:left .25s ease,right .25s ease;border-radius:2px;}
.nav-link:hover{color:var(--text-1);}
.nav-link:hover::after{left:0;right:0;}
.nav-link.active{color:var(--text-1);font-weight:600;}
.nav-link.active::after{left:0;right:0;}
.header-actions{display:flex;align-items:center;gap:16px;margin-left:8px;}
.text-entry{font-size:14px;color:var(--text-2);white-space:nowrap;}
.text-entry:hover{color:var(--accent);}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--text-1);align-items:center;justify-content:center; }
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;line-height:1;padding:14px 26px;border-radius:var(--r-btn);border:1px solid transparent;cursor:pointer;transition:transform .2s ease,box-shadow .25s ease,background .25s ease,color .2s ease,border-color .2s ease;}
.btn-glow{background:linear-gradient(135deg,var(--primary),var(--primary-600));color:#fff;box-shadow:0 0 0 1px rgba(43,127,255,.5) inset,0 10px 28px rgba(43,127,255,.35);}
.btn-glow:hover{color:#fff;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(43,127,255,.7) inset,0 14px 36px rgba(43,127,255,.55);}
.btn-glow:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(43,127,255,.6) inset,0 6px 16px rgba(43,127,255,.35);}
.btn-outline{background:transparent;color:var(--text-1);border-color:var(--line-strong);}
.btn-outline:hover{color:var(--text-1);border-color:var(--accent);background:rgba(53,214,192,.08);transform:translateY(-2px);}
.btn-outline:active{transform:translateY(0);}
.btn-pill{border-radius:var(--r-pill);padding:11px 22px;font-size:14px;}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn[disabled],.btn.is-disabled{filter:saturate(40%);opacity:.6;pointer-events:none;}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:76px 0 88px;background:linear-gradient(135deg,var(--bg-1) 0%,rgba(43,127,255,.18) 100%);}
.hero::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;opacity:.16;mix-blend-mode:luminosity;}
.hero::after{content:"";position:absolute;left:-140px;top:-120px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(53,214,192,.16),transparent 65%);pointer-events:none;}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.hero-copy h1{font-size:clamp(28px,4.2vw,46px);line-height:1.25;font-weight:700;letter-spacing:-.02em;}
.hero-copy h1 em{font-style:normal;color:var(--accent);}
.hero-sub{margin-top:20px;font-size:17px;color:var(--text-2);max-width:520px;line-height:1.75;}
.hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px;}
.hero-stats{margin-top:40px;display:flex;flex-wrap:wrap;gap:12px;}
.stat-pill{display:flex;align-items:baseline;gap:8px;padding:10px 18px;border-radius:var(--r-pill);background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px) saturate(140%);box-shadow:var(--s1);}
.stat-num{font-family:var(--mono);font-size:18px;font-weight:700;color:var(--accent);letter-spacing:-.02em;}
.stat-label{font-size:13px;color:var(--text-2);}
.hero-media{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line-strong);box-shadow:var(--s2);aspect-ratio:16/10;}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,11,20,.08) 40%,rgba(6,11,20,.72) 100%);}
.hero-glass{position:absolute;right:18px;bottom:18px;z-index:3;display:flex;align-items:center;gap:12px;padding:12px 18px;border-radius:var(--r-pill);background:rgba(16,27,46,.68);border:1px solid var(--line-strong);backdrop-filter:blur(16px) saturate(140%);font-size:13px;color:var(--text-2);}
.hero-glass strong{color:var(--text-1);font-family:var(--mono);font-size:14px;}

/* ---------- collection ---------- */
.collections{padding:88px 0;background:linear-gradient(180deg,rgba(16,27,46,.6),rgba(10,18,32,.2));border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--gap);}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);}
.coll-card{position:relative;overflow:hidden;display:flex;flex-direction:column;gap:14px;padding:26px;border-radius:var(--r-card);background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px) saturate(140%);box-shadow:var(--s1);color:var(--text-1);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;}
.coll-card::before{content:"";position:absolute;inset:0 0 auto 0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.14),transparent);}
.coll-card:hover{transform:translateY(-2px);box-shadow:var(--s3);border-color:var(--line-strong);color:var(--text-1);}
.coll-index{position:absolute;right:18px;top:6px;font-family:var(--mono);font-size:40px;font-weight:700;color:rgba(255,255,255,.08);letter-spacing:-.04em;}
.coll-icon{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;border:1px solid var(--line-strong);background:rgba(53,214,192,.08);color:var(--accent);}
.coll-title{font-size:19px;font-weight:650;line-height:1.4;padding-right:56px;}
.coll-desc{font-size:14px;color:var(--text-2);line-height:1.7;}
.coll-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:6px;}
.chip{display:inline-flex;align-items:center;gap:6px;font-size:13px;letter-spacing:.02em;padding:5px 12px;border-radius:var(--r-pill);background:rgba(53,214,192,.1);border:1px solid rgba(53,214,192,.25);color:var(--accent);}
.chip-blue{background:var(--primary-soft);border-color:rgba(43,127,255,.3);color:#8FBCFF;}
.enter{font-size:14px;color:var(--accent);display:inline-flex;align-items:center;gap:6px;}
.enter svg{transition:transform .2s ease;}
.coll-card:hover .enter svg{transform:translateX(4px);}

/* ---------- featured ---------- */
.spot-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.spot-card{position:relative;overflow:hidden;border-radius:var(--r-card);border:1px solid var(--line);background:var(--bg-2);box-shadow:var(--s1);transition:transform .25s ease,box-shadow .25s ease;}
.spot-card:hover{transform:translateY(-2px);box-shadow:var(--s3);}
.spot-card.big{grid-column:span 2;display:grid;grid-template-columns:1.05fr .95fr;}
.spot-thumb{position:relative;overflow:hidden;aspect-ratio:16/10;}
.spot-card.big .spot-thumb{aspect-ratio:auto;height:100%;min-height:300px;}
.spot-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.spot-card:hover .spot-thumb img{transform:scale(1.03);}
.spot-body{padding:22px;display:flex;flex-direction:column;gap:12px;}
.spot-body h3{font-size:19px;font-weight:650;line-height:1.45;}
.spot-body p{font-size:14px;color:var(--text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.spot-meta{font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:10px;}
.spot-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--accent);}
.spot-card:hover .spot-link svg{transform:translateX(4px);}
.spot-link svg{transition:transform .2s ease;}

/* ---------- post cards ---------- */
.post-card{display:flex;flex-direction:column;height:100%;border-radius:var(--r-card);overflow:hidden;background:var(--bg-2);border:1px solid var(--line);box-shadow:var(--s1);color:var(--text-1);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--s3);border-color:var(--line-strong);color:var(--text-1);}
.post-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--bg-0);}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.post-card:hover .post-thumb img{transform:scale(1.03);}
.post-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-title{font-size:17px;font-weight:650;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-sum{font-size:14px;color:var(--text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-foot{margin-top:auto;padding-top:12px;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);border-top:1px solid var(--line);}
.post-arrow{color:var(--accent);transition:transform .2s ease;}
.post-card:hover .post-arrow{transform:translateX(4px);}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;min-height:220px;padding:32px;border-radius:var(--r-card);border:1px dashed var(--line-strong);background:rgba(16,27,46,.4);text-align:center;}
.empty-state .empty-icon{color:var(--warn);opacity:.85;}
.empty-state p{color:var(--text-2);font-size:15px;}

/* ---------- cta band ---------- */
.cta-band{position:relative;overflow:hidden;border-radius:var(--r-card);border:1px solid var(--line-strong);background:var(--glass);backdrop-filter:blur(16px) saturate(140%);padding:36px;display:flex;align-items:center;justify-content:space-between;gap:28px;box-shadow:var(--s2);}
.cta-band::before{content:"";position:absolute;inset:0 0 auto 0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.18),transparent);}
.cta-band::after{content:"";position:absolute;right:-80px;bottom:-120px;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(43,127,255,.22),transparent 65%);pointer-events:none;}
.cta-copy h2{font-size:clamp(20px,2.2vw,26px);font-weight:650;line-height:1.4;}
.cta-copy p{margin-top:8px;color:var(--text-2);font-size:14px;max-width:560px;}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;}
.btn.is-copied{background:rgba(53,214,192,.14);border-color:var(--accent);color:var(--accent);}

/* ---------- faq ---------- */
.accordion-item{background:var(--bg-2);border:1px solid var(--line) !important;border-radius:var(--r-card) !important;margin-bottom:14px;overflow:hidden;position:relative;}
.accordion-item::before{content:"";position:absolute;inset:0 0 auto 0;height:1px;background:transparent;transition:background .25s ease;}
.accordion-item:has(.accordion-button:not(.collapsed))::before{background:var(--accent);}
.accordion-button{background:transparent;color:var(--text-1);font-size:16px;font-weight:600;padding:20px 22px;box-shadow:none !important;}
.accordion-button:not(.collapsed){background:rgba(43,127,255,.06);color:var(--text-1);}
.accordion-button::after{display:none;}
.accordion-button .faq-icon{margin-left:auto;width:24px;height:24px;flex:none;display:grid;place-items:center;color:var(--accent);border:1px solid var(--line-strong);border-radius:50%;font-size:15px;line-height:1;transition:transform .25s ease;}
.accordion-button:not(.collapsed) .faq-icon{transform:rotate(90deg);}
.accordion-body{padding:4px 22px 22px;color:var(--text-2);font-size:15px;line-height:1.8;}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-0);border-top:1px solid var(--line);position:relative;margin-top:88px;}
.site-footer::before{content:"";position:absolute;inset:0 0 auto 0;height:1px;background:linear-gradient(90deg,transparent,rgba(53,214,192,.4),transparent);}
.footer-top{padding:64px 0 40px;display:grid;grid-template-columns:1.4fr 1fr 1fr 1.4fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:var(--text-1);font-weight:700;font-size:17px;margin-bottom:16px;}
.footer-text{font-size:14px;color:var(--text-2);line-height:1.8;max-width:320px;}
.footer-col h4{font-size:14px;font-weight:600;letter-spacing:.02em;color:var(--text-1);margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--text-2);display:inline-block;transition:color .2s ease,transform .2s ease;}
.footer-col a:hover{color:var(--accent);transform:translateX(2px);}
.subscribe-form{display:flex;gap:10px;margin-top:14px;}
.subscribe-form input{flex:1;min-width:0;padding:12px 14px;border-radius:var(--r-btn);background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--text-1);font-size:14px;transition:border-color .2s ease,box-shadow .2s ease;}
.subscribe-form input::placeholder{color:var(--text-3);}
.subscribe-form input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px rgba(53,214,192,.35);}
.footer-note{font-size:13px;color:var(--text-3);margin-top:12px;}
.footer-bottom{border-top:1px solid var(--line);padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--text-3);}
.to-top{font-size:13px;color:var(--text-2);display:inline-flex;align-items:center;gap:6px;}
.to-top:hover{color:var(--accent);}

/* ---------- mobile drawer ---------- */
.drawer{position:fixed;inset:0;z-index:1050;background:rgba(6,11,20,.96);backdrop-filter:blur(16px);display:flex;flex-direction:column;padding:24px;transform:translateY(-100%);transition:transform .3s ease;visibility:hidden;}
.drawer.open{transform:translateY(0);visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text-1);font-size:20px;line-height:1;}
.drawer-nav{margin-top:44px;display:flex;flex-direction:column;gap:20px;}
.drawer-nav a{font-size:20px;font-weight:600;color:var(--text-1);}
.drawer-nav a.active{color:var(--accent);}
.drawer-cta{margin-top:auto;padding-top:24px;}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .footer-top{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:991px){
  body{padding-top:64px;}
  .site-header{height:64px;}
  .main-nav,.header-actions{display:none;}
  .nav-toggle{display:flex;margin-left:auto;}
  .header-inner{gap:16px;}
  .section{padding:64px 0;}
  .hero{padding:56px 0 64px;}
  .hero-inner{grid-template-columns:1fr;gap:32px;}
  .hero-media{order:-1;}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr);}
  .spot-grid{grid-template-columns:repeat(2,1fr);}
  .spot-card.big{grid-column:span 2;grid-template-columns:1fr;}
  .spot-card.big .spot-thumb{min-height:0;aspect-ratio:16/10;}
  .cta-band{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .grid-3,.grid-g-2,.grid-4,.spot-grid{grid-template-columns:1fr;}
  .spot-card.big{grid-column:span 1;}
  .section{padding:48px 0;}
  .hero-stats{gap:10px;}
  .stat-pill{padding:8px 14px;}
  .cta-band{padding:24px;}
  .cta-actions .btn{width:100%;}
  .footer-top{grid-template-columns:1fr;padding:44px 0 28px;}
  .features-scroll{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:8px;}
  .features-scroll::-webkit-scrollbar{display:none;}
  .features-scroll>*{min-width:78%;scroll-snap-align:start;}
}
@media (max-width:575px){
  .hero-actions .btn{width:100%;}
  .subscribe-form{flex-direction:column;}
  .subscribe-form .btn{width:100%;}
}

/* roulang page: article */
:root{
  --bs-primary:#2B7FFF;
  --bs-body-bg:#0A1220;
  --bs-body-color:#E8EEF7;
  --bs-border-radius:10px;
  --bs-link-color:#35D6C0;
  --bs-link-hover-color:#E8EEF7;
  --bs-font-sans-serif:-apple-system,"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",sans-serif;

  --bg-0:#060B14;
  --bg-1:#0A1220;
  --bg-2:#101B2E;
  --primary:#2B7FFF;
  --primary-600:#1E63E9;
  --primary-soft:rgba(43,127,255,.14);
  --accent:#35D6C0;
  --warn:#FF8A3D;
  --text-1:#E8EEF7;
  --text-2:#A7B8CE;
  --text-3:#6D7F96;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --glass:rgba(16,27,46,.55);
  --r-card:16px;
  --r-btn:10px;
  --r-pill:999px;
  --s1:0 2px 8px rgba(0,0,0,.25);
  --s2:0 12px 32px rgba(0,0,0,.35);
  --s3:0 18px 48px rgba(0,0,0,.45),0 0 0 1px var(--line-strong);
  --sec-gap:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-1);
  color:var(--text-1);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--accent);text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:hover{color:var(--text-1)}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:650;letter-spacing:.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button,input{font-family:inherit}
.container{max-width:1200px;padding:0 24px;margin:0 auto;width:100%}
.sec-gap{padding:var(--sec-gap) 0}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

/* ---------- 按钮 ---------- */
.btn-glow,.btn-line,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);border:0;cursor:pointer;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 26px;transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
}
.btn-glow{
  background:linear-gradient(135deg,var(--primary),var(--primary-600));
  color:#fff;
  box-shadow:0 0 0 1px rgba(43,127,255,.5),0 10px 28px rgba(43,127,255,.35);
}
.btn-glow:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(43,127,255,.6),0 14px 34px rgba(43,127,255,.55);color:#fff}
.btn-glow:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(43,127,255,.5),0 6px 16px rgba(43,127,255,.3)}
.btn-line{
  background:transparent;color:var(--text-1);border:1px solid var(--line-strong);
}
.btn-line:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.btn-ghost{
  background:transparent;color:var(--text-2);padding:10px 14px;font-weight:500;
}
.btn-ghost:hover{color:var(--accent)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}

/* ---------- 玻璃卡片 ---------- */
.glass{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--s1);
  position:relative;
  overflow:hidden;
}
.glass::before{
  content:"";position:absolute;inset:0 0 auto 0;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,.12),transparent);
}
.glass-hover{transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.glass-hover:hover{transform:translateY(-2px);box-shadow:var(--s3);border-color:var(--line-strong)}

/* ---------- 徽章 ---------- */
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:var(--r-pill);
  font-size:13px;letter-spacing:.02em;line-height:1.4;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  color:var(--accent);
}
.chip-blue{color:#9CC4FF}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1050;
  background:rgba(6,11,20,.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:height .25s ease,border-color .25s ease,background .25s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,214,192,.4),transparent);
  opacity:.4;transition:opacity .25s ease;
}
.site-header.scrolled{background:rgba(6,11,20,.9)}
.site-header.scrolled::after{opacity:.8}
.nav-inner{
  height:72px;display:flex;align-items:center;gap:24px;
  transition:height .25s ease;
}
.site-header.scrolled .nav-inner{height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-1);font-weight:700;font-size:17px;letter-spacing:.01em;white-space:nowrap}
.brand:hover{color:var(--text-1)}
.brand-mark{
  width:36px;height:36px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  color:var(--primary);background:var(--primary-soft);border:1px solid rgba(43,127,255,.35);flex:0 0 auto;
}
.main-nav{display:flex;align-items:center;gap:32px;margin-left:auto}
.main-nav .nav-link{
  position:relative;color:var(--text-2);font-size:15px;padding:6px 0;transition:color .2s ease;
  background:none;border:0;
}
.main-nav .nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;background:var(--accent);
  transition:left .25s ease,right .25s ease;border-radius:2px;
}
.main-nav .nav-link:hover{color:var(--text-1)}
.main-nav .nav-link:hover::after{left:0;right:0}
.main-nav .nav-link.active{color:var(--text-1)}
.main-nav .nav-link.active::after{left:0;right:0;opacity:1}
.header-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;background:rgba(255,255,255,.05);
  border:1px solid var(--line);color:var(--text-1);align-items:center;justify-content:center;cursor:pointer;
}
.drawer{
  position:fixed;inset:0;z-index:1100;background:rgba(6,11,20,.97);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  padding:24px;display:none;flex-direction:column;
}
.drawer.open{display:flex}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:34px}
.drawer-nav{display:flex;flex-direction:column;gap:20px}
.drawer-nav a{color:var(--text-1);font-size:19px;font-weight:600;padding:6px 0;border-bottom:1px solid var(--line)}
.drawer-foot{margin-top:auto;padding-top:24px;display:flex;flex-direction:column;gap:12px}
.drawer-close{background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text-1);width:42px;height:42px;border-radius:12px;cursor:pointer}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;margin-top:72px;padding:46px 0 40px;
  background:
    linear-gradient(135deg,rgba(10,18,32,.94),rgba(43,127,255,.18)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-head::after{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,214,192,.45),transparent);
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--accent)}
.crumb .sep{opacity:.5}
.page-title{
  font-size:clamp(24px,3.6vw,40px);line-height:1.3;font-weight:700;margin:14px 0 0;max-width:900px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px;margin-top:18px;font-size:13.5px;color:var(--text-2);
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);display:inline-block}
.head-actions{display:flex;gap:10px;margin-top:22px;flex-wrap:wrap}
.icon-btn{
  display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text-2);
  font-size:13.5px;cursor:pointer;transition:all .2s ease;
}
.icon-btn:hover{color:var(--accent);border-color:rgba(53,214,192,.45)}

/* ---------- 正文布局 ---------- */
.article-wrap{padding:56px 0 var(--sec-gap)}
.article-grid{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:32px;align-items:start}
.article-panel{padding:36px 38px}
.article-body{font-size:16px;line-height:1.75;color:var(--text-1)}
.article-body p{margin:0 0 1.2em;color:var(--text-2)}
.article-body h2{
  position:relative;font-size:clamp(20px,2.2vw,26px);line-height:1.4;margin:48px 0 18px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:4px;
  background:var(--accent);box-shadow:0 0 12px rgba(53,214,192,.6);
}
.article-body h3{font-size:20px;margin:32px 0 12px;font-weight:600}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:22px;color:var(--text-2)}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:.5em}
.article-body li::marker{color:var(--accent)}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;border-left:3px solid var(--accent);
  background:rgba(16,27,46,.6);border-radius:0 12px 12px 0;color:var(--text-2);
}
.article-body img{
  border-radius:14px;border:1px solid var(--line);margin:24px 0;box-shadow:var(--s2);
}
.article-body pre{
  background:var(--bg-0);border:1px solid var(--line);border-radius:12px;
  padding:16px 18px;overflow-x:auto;font-size:14px;color:var(--text-2);
}
.article-body code{background:rgba(255,255,255,.06);padding:2px 6px;border-radius:6px;font-size:14px}
.article-body a{color:var(--accent);border-bottom:1px solid rgba(53,214,192,.35)}
.article-body a:hover{color:var(--text-1)}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;color:var(--text-2)}
.article-body th{background:rgba(255,255,255,.04);color:var(--text-1)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:38px 0}

/* ---------- 侧栏 ---------- */
.side-stack{display:flex;flex-direction:column;gap:22px;position:sticky;top:96px}
.widget{padding:24px}
.widget-title{
  display:flex;align-items:center;gap:8px;font-size:14px;font-weight:650;color:var(--text-1);
  margin-bottom:16px;letter-spacing:.02em;
}
.widget-title i{color:var(--accent);font-size:13px}
.toc-list{display:flex;flex-direction:column;gap:12px}
.toc-list a{
  color:var(--text-2);font-size:14px;line-height:1.5;padding-left:12px;border-left:2px solid var(--line);
  transition:all .2s ease;display:block;
}
.toc-list a:hover{color:var(--accent);border-left-color:var(--accent);padding-left:16px}
.toc-toggle{display:none}
.side-item{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}
.side-item:last-child{border-bottom:0;padding-bottom:0}
.side-item img{width:74px;height:52px;object-fit:cover;border-radius:10px;flex:0 0 auto}
.side-item h5{margin:0 0 6px;font-size:14px;font-weight:600;line-height:1.5;color:var(--text-1)}
.side-item h5 a{color:var(--text-1)}
.side-item h5 a:hover{color:var(--accent)}
.side-item span{font-size:12.5px;color:var(--text-3)}

/* ---------- 空态 ---------- */
.empty-state{
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;text-align:center;padding:30px;color:var(--text-2);
}
.empty-state .empty-icon{
  width:64px;height:64px;border-radius:20px;display:flex;align-items:center;justify-content:center;
  background:rgba(255,138,61,.1);border:1px solid rgba(255,138,61,.3);color:var(--warn);font-size:24px;
}

/* ---------- 相关推荐 ---------- */
.related{padding:0 0 var(--sec-gap)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap}
.sec-head h2{font-size:clamp(22px,2.6vw,30px)}
.sec-head p{color:var(--text-2);font-size:14.5px;margin-top:8px}
.text-link{font-size:14.5px;color:var(--accent);display:inline-flex;align-items:center;gap:6px}
.text-link:hover{gap:10px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{display:flex;flex-direction:column;height:100%;overflow:hidden}
.post-card .thumb{position:relative;aspect-ratio:16/10;overflow:hidden;border-radius:var(--r-card) var(--r-card) 0 0}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.post-card:hover .thumb img{transform:scale(1.03)}
.post-card .body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1}
.post-card h3{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card .desc{
  font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card .foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);padding-top:12px;border-top:1px solid var(--line);
}
.post-card .foot i{transition:transform .25s ease}
.post-card:hover .foot i{transform:translateX(4px);color:var(--accent)}

/* ---------- CTA 横幅 ---------- */
.cta-banner{padding:28px 32px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-banner h3{font-size:20px;margin-bottom:8px}
.cta-banner p{color:var(--text-2);font-size:14.5px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-0);border-top:1px solid var(--line);padding:64px 0 0;position:relative;margin-top:20px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,127,255,.5),transparent);
}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:36px;padding-bottom:44px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;color:var(--text-1);font-size:16px;margin-bottom:14px}
.footer-brand .brand-mark{width:32px;height:32px;border-radius:10px}
.footer-text{font-size:14px;color:var(--text-2);max-width:280px;line-height:1.7}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:16px;color:var(--text-1)}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col ul a{font-size:14px;color:var(--text-2);display:inline-block;transition:color .2s ease,transform .2s ease}
.footer-col ul a:hover{color:var(--accent);transform:translateX(2px)}
.subscribe-form{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap}
.subscribe-form input{
  flex:1;min-width:150px;background:rgba(255,255,255,.04);border:1px solid var(--line);
  border-radius:var(--r-btn);padding:11px 14px;color:var(--text-1);font-size:14px;transition:all .2s ease;
}
.subscribe-form input::placeholder{color:var(--text-3)}
.subscribe-form input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px rgba(53,214,192,.35);background:rgba(255,255,255,.06)}
.footer-note{font-size:12.5px;color:var(--text-3);margin-top:10px}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0;display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:13.5px;color:var(--text-3);
}
.to-top{display:inline-flex;align-items:center;gap:6px;color:var(--text-2);font-size:13.5px}
.to-top:hover{color:var(--accent)}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  :root{--sec-gap:72px}
  .article-grid{grid-template-columns:minmax(0,1fr) 340px}
}
@media (max-width:991.98px){
  :root{--sec-gap:64px}
  .main-nav,.header-actions .btn-glow{display:none}
  .nav-toggle{display:inline-flex}
  .site-header .nav-inner{height:64px}
  .page-head{margin-top:64px}
  .article-grid{grid-template-columns:1fr;gap:26px}
  .side-stack{position:static}
  .toc-toggle{
    display:flex;width:100%;align-items:center;justify-content:space-between;
    background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text-1);
    padding:12px 16px;border-radius:var(--r-btn);font-size:14px;cursor:pointer;
  }
  .toc-list{display:none;margin-top:14px}
  .toc-list.open{display:flex}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-top{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
}
@media (max-width:767.98px){
  :root{--sec-gap:48px}
  .container{padding:0 16px}
  .page-head{padding:32px 0 30px}
  .article-panel{padding:22px 18px}
  .article-wrap{padding:36px 0 var(--sec-gap)}
  .card-grid{grid-template-columns:1fr}
  .cta-banner{padding:22px 18px;flex-direction:column;align-items:stretch}
  .cta-actions{flex-direction:column}
  .cta-actions .btn-glow,.cta-actions .btn-line{width:100%}
  .footer-top{grid-template-columns:1fr;gap:26px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .widget{padding:18px}
  .sec-head{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .brand span{font-size:15px}
  .article-body h2{margin-top:36px}
}

/* roulang page: category1 */
:root{
  --bg-0:#060B14;
  --bg-1:#0A1220;
  --bg-2:#101B2E;
  --primary:#2B7FFF;
  --primary-600:#1E63E9;
  --primary-soft:rgba(43,127,255,.14);
  --accent:#35D6C0;
  --warn:#FF8A3D;
  --text-1:#E8EEF7;
  --text-2:#A7B8CE;
  --text-3:#6D7F96;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --glass:rgba(16,27,46,.55);
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --r-img:14px;
  --s1:0 2px 8px rgba(0,0,0,.25);
  --s2:0 12px 32px rgba(0,0,0,.35);
  --s3:0 18px 48px rgba(0,0,0,.45);
  --bs-primary:#2B7FFF;
  --bs-body-bg:#0A1220;
  --bs-body-color:#E8EEF7;
  --bs-border-radius:10px;
  --bs-link-color:#35D6C0;
  --bs-link-hover-color:#E8EEF7;
  --bs-font-sans-serif:-apple-system,"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,sans-serif;
  --container-max:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-1);
  color:var(--text-1);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(900px 520px at 12% -8%, rgba(43,127,255,.18), transparent 65%),
    radial-gradient(700px 460px at 92% 6%, rgba(53,214,192,.10), transparent 70%);
}
img{max-width:100%;display:block;}
a{color:var(--accent);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--text-1);}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul{list-style:none;padding:0;}
button,input{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
.container{max-width:var(--container-max);margin:0 auto;padding:0 24px;position:relative;z-index:1;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);
  padding:12px 22px;
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,color .2s ease,border-color .2s ease,background .2s ease;
}
.btn-glow{
  background:linear-gradient(180deg,#3A8BFF,var(--primary-600));
  color:#fff;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.14),0 10px 28px rgba(43,127,255,.35);
}
.btn-glow:hover{color:#fff;transform:translateY(-2px);box-shadow:inset 0 0 0 1px rgba(255,255,255,.2),0 12px 34px rgba(43,127,255,.55);}
.btn-glow:active{transform:translateY(0);box-shadow:inset 0 0 0 1px rgba(255,255,255,.1),0 6px 16px rgba(43,127,255,.3);}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text-1);}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:9px 18px;font-size:14px;}
.text-link{
  color:var(--text-2);font-size:14px;font-weight:500;
  border-bottom:1px solid transparent;padding-bottom:2px;
  transition:color .2s ease,border-color .2s ease;
}
.text-link:hover{color:var(--accent);border-color:var(--accent);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(6,11,20,.72);
  backdrop-filter:blur(14px) saturate(150%);
  border-bottom:1px solid var(--line);
  transition:background .3s ease,border-color .3s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,214,192,.4),transparent);
  opacity:.4;transition:opacity .3s ease;
}
.site-header.scrolled{background:rgba(6,11,20,.9);}
.site-header.scrolled::after{opacity:.8;}
.header-inner{
  max-width:var(--container-max);margin:0 auto;padding:0 24px;
  height:72px;display:flex;align-items:center;gap:28px;
  transition:height .3s ease;
}
.site-header.scrolled .header-inner{height:60px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--text-1);font-weight:700;font-size:17px;letter-spacing:.01em;flex:0 0 auto;}
.brand:hover{color:var(--text-1);}
.brand-mark{display:inline-flex;color:var(--accent);}
.main-nav{display:flex;align-items:center;gap:32px;margin-left:auto;}
.nav-link{
  position:relative;color:var(--text-2);font-size:15px;font-weight:500;padding:6px 0;
  transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;
  background:var(--accent);border-radius:2px;
  transition:left .24s ease,right .24s ease;
}
.nav-link:hover{color:var(--text-1);}
.nav-link:hover::after{left:0;right:0;}
.nav-link.active{color:var(--text-1);}
.nav-link.active::after{left:0;right:0;}
.header-actions{display:flex;align-items:center;gap:16px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line-strong);background:rgba(255,255,255,.04);
  color:var(--text-1);align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:1.6px;background:currentColor;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:1.6px;background:currentColor;transition:transform .25s ease;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.mobile-drawer{
  position:fixed;inset:0;z-index:70;
  background:rgba(6,11,20,.94);
  backdrop-filter:blur(18px) saturate(140%);
  padding:22px 24px 32px;
  display:flex;flex-direction:column;
  transform:translateY(-102%);
  transition:transform .32s cubic-bezier(.4,0,.2,1);
}
.mobile-drawer.open{transform:translateY(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px;}
.drawer-close{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line-strong);
  background:transparent;color:var(--text-1);font-size:20px;line-height:1;
}
.drawer-nav{display:flex;flex-direction:column;gap:20px;}
.drawer-nav a{color:var(--text-1);font-size:18px;font-weight:600;}
.drawer-nav a.active{color:var(--accent);}
.drawer-foot{margin-top:auto;padding-top:28px;display:flex;flex-direction:column;gap:12px;}

/* ---------- 通用板块 ---------- */
main{padding-top:72px;position:relative;z-index:1;}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.02em;color:var(--accent);
  background:var(--glass);border:1px solid var(--line);
  border-radius:999px;padding:6px 14px;
  backdrop-filter:blur(14px) saturate(140%);
}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{font-size:clamp(22px,2.6vw,32px);line-height:1.35;font-weight:650;margin:16px 0 12px;}
.section-head p{color:var(--text-2);font-size:16px;}
.divider-line{height:1px;background:linear-gradient(90deg,transparent,var(--line-strong),transparent);}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,var(--bg-1) 0%,rgba(43,127,255,.18) 100%);
  border-bottom:1px solid var(--line);
  padding:76px 0 80px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(6,11,20,.2),rgba(6,11,20,.85));
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:56px;align-items:center;position:relative;}
.hero h1{font-size:clamp(28px,4.2vw,46px);line-height:1.25;font-weight:700;margin:20px 0 18px;}
.hero-sub{color:var(--text-2);font-size:17px;max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.stat-pill{
  display:flex;align-items:center;gap:10px;
  background:var(--glass);border:1px solid var(--line);border-radius:999px;
  padding:9px 16px;font-size:13px;color:var(--text-2);
  backdrop-filter:blur(14px) saturate(140%);
}
.stat-pill b{
  font-family:"SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;
  font-size:15px;color:var(--text-1);font-weight:600;letter-spacing:.02em;
}
.hero-media{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line-strong);box-shadow:var(--s2);}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.hero-media::after{content:"";position:absolute;inset:0;box-shadow:inset 0 0 0 1px rgba(255,255,255,.12);border-radius:var(--r-card);pointer-events:none;}
.hero-info{
  position:absolute;right:16px;bottom:16px;left:16px;
  background:rgba(10,18,32,.62);border:1px solid var(--line-strong);
  border-radius:14px;padding:14px 18px;
  backdrop-filter:blur(14px) saturate(140%);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  box-shadow:var(--s1);
}
.hero-info strong{display:block;font-size:15px;font-weight:650;color:var(--text-1);}
.hero-info span{font-size:13px;color:var(--text-2);}
.hero-info .tag{
  font-size:13px;color:var(--accent);border:1px solid rgba(53,214,192,.35);
  background:rgba(53,214,192,.08);border-radius:999px;padding:5px 12px;white-space:nowrap;
}

/* ---------- 速览卡 ---------- */
.quick-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.quick-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--s1);
  backdrop-filter:blur(14px) saturate(140%);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.quick-card:hover{transform:translateY(-2px);box-shadow:var(--s3);border-color:var(--line-strong);}
.quick-card .q-num{
  font-family:"SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;
  font-size:13px;color:var(--accent);letter-spacing:.06em;
}
.quick-card h3{font-size:17px;font-weight:600;margin:12px 0 8px;}
.quick-card p{font-size:14px;color:var(--text-2);line-height:1.7;}

/* ---------- 图文交替长条 ---------- */
.feature-list{display:flex;flex-direction:column;gap:28px;}
.feature-row{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:48px;align-items:center;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--s1);
  backdrop-filter:blur(14px) saturate(140%);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.feature-row:hover{transform:translateY(-2px);box-shadow:var(--s3);border-color:var(--line-strong);}
.feature-row.reverse .feature-media{order:2;}
.feature-row.reverse .feature-body{order:1;}
.feature-media{position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);}
.feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease;}
.feature-row:hover .feature-media img{transform:scale(1.03);}
.feature-media::after{content:"";position:absolute;inset:0;box-shadow:inset 0 0 0 1px rgba(255,255,255,.1);border-radius:var(--r-img);}
.feature-body .f-index{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--accent);
  letter-spacing:.06em;font-family:"SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;
}
.feature-body h3{font-size:20px;font-weight:600;margin:12px 0 12px;}
.feature-body p{color:var(--text-2);font-size:15.5px;}
.point-list{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.point-list li{position:relative;padding-left:20px;font-size:14.5px;color:var(--text-2);}
.point-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;
  background:var(--primary-soft);border:1px solid var(--accent);
}
.feature-body .text-link{display:inline-block;margin-top:20px;}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.step-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;position:relative;overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease;
}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--s2);}
.step-card .watermark{
  position:absolute;right:14px;top:6px;font-size:40px;font-weight:700;
  color:rgba(255,255,255,.08);font-family:"SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;
  line-height:1;pointer-events:none;
}
.step-card h3{font-size:17px;font-weight:600;margin-bottom:10px;}
.step-card p{font-size:14px;color:var(--text-2);}
.step-line{height:2px;width:36px;background:var(--accent);border-radius:2px;margin-bottom:16px;}

/* ---------- 适用场景 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.scene-card{
  display:flex;gap:18px;align-items:flex-start;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;backdrop-filter:blur(14px) saturate(140%);
  transition:transform .25s ease,box-shadow .25s ease;
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--s2);}
.scene-icon{
  flex:0 0 44px;width:44px;height:44px;border-radius:12px;
  border:1px solid rgba(53,214,192,.35);background:rgba(53,214,192,.08);
  display:flex;align-items:center;justify-content:center;color:var(--accent);
}
.scene-card h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.scene-card p{font-size:14.5px;color:var(--text-2);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;}
.accordion-item{
  background:var(--bg-2);border:1px solid var(--line);
  border-radius:14px !important;overflow:hidden;margin-bottom:14px;
}
.accordion-item:last-child{margin-bottom:0;}
.accordion-button{
  background:var(--bg-2);color:var(--text-1);
  font-size:16px;font-weight:600;padding:20px 22px;
  box-shadow:none !important;border-radius:0 !important;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.accordion-button:not(.collapsed){background:var(--bg-2);color:var(--text-1);}
.accordion-button::after{display:none;}
.accordion-button:hover{color:var(--accent);}
.accordion-button .faq-icon{
  position:relative;flex:0 0 22px;width:22px;height:22px;border-radius:50%;
  border:1px solid var(--line-strong);transition:border-color .25s ease;
}
.accordion-button:hover .faq-icon{border-color:var(--accent);}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  background:var(--accent);border-radius:2px;
}
.faq-icon::before{width:10px;height:1.6px;}
.faq-icon::after{width:1.6px;height:10px;transition:transform .25s ease,opacity .2s ease;}
.accordion-button:not(.collapsed) .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.accordion-body{
  padding:0 22px 22px;color:var(--text-2);font-size:15px;
  border-top:1px solid rgba(53,214,192,.5);padding-top:18px;
}

/* ---------- CTA ---------- */
.cta-banner{
  background:var(--glass);border:1px solid var(--line-strong);border-radius:var(--r-card);
  padding:32px 36px;box-shadow:var(--s2);
  backdrop-filter:blur(14px) saturate(140%);
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  position:relative;overflow:hidden;
}
.cta-banner::before{
  content:"";position:absolute;inset:0 0 auto 0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.28),transparent);
}
.cta-banner h2{font-size:clamp(20px,2.2vw,26px);font-weight:650;margin-bottom:8px;}
.cta-banner p{color:var(--text-2);font-size:15px;}
.cta-actions{display:flex;gap:14px;flex:0 0 auto;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-0);border-top:1px solid var(--line);
  margin-top:0;position:relative;z-index:1;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--line-strong),transparent);
}
.footer-top{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:40px;
  padding:64px 0 44px;
}
.footer-brand{display:flex;align-items:center;gap:10px;color:var(--text-1);font-weight:700;font-size:17px;margin-bottom:16px;}
.footer-brand .brand-mark{color:var(--accent);display:inline-flex;}
.footer-text{color:var(--text-2);font-size:14px;line-height:1.75;max-width:320px;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:18px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col ul a{color:var(--text-2);font-size:14px;transition:color .2s ease,transform .2s ease;display:inline-block;}
.footer-col ul a:hover{color:var(--accent);transform:translateX(2px);}
.subscribe-form{display:flex;gap:10px;margin-top:14px;}
.subscribe-form input{
  flex:1 1 auto;min-width:0;background:rgba(255,255,255,.04);
  border:1px solid var(--line);border-radius:var(--r-input);
  padding:11px 14px;color:var(--text-1);font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.subscribe-form input::placeholder{color:var(--text-3);}
.subscribe-form input:focus{
  outline:none;border-color:var(--accent);
  box-shadow:0 0 0 2px rgba(53,214,192,.28);
}
.footer-note{font-size:13px;color:var(--text-3);margin-top:12px;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  color:var(--text-3);font-size:13px;
}
.to-top{display:inline-flex;align-items:center;gap:6px;color:var(--text-2);font-size:13px;}
.to-top:hover{color:var(--accent);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .quick-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:991px){
  .main-nav,.header-actions .btn,.header-actions .text-link{display:none;}
  .nav-toggle{display:flex;}
  .hero{padding:56px 0 60px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-media{order:2;}
  .section{padding:64px 0;}
  .feature-row{grid-template-columns:1fr;gap:28px;padding:24px;}
  .feature-row.reverse .feature-media{order:0;}
  .feature-row.reverse .feature-body{order:0;}
  .scene-grid{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;padding:52px 0 36px;}
  .cta-banner{flex-direction:column;align-items:flex-start;padding:28px;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
}
@media (max-width:575px){
  .container{padding:0 16px;}
  .header-inner{padding:0 16px;gap:16px;}
  .brand{font-size:16px;}
  .quick-grid,.steps{grid-template-columns:1fr;}
  .section{padding:48px 0;}
  .hero-stats{gap:10px;}
  .stat-pill{padding:8px 13px;}
  .footer-top{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .subscribe-form{flex-direction:column;}
  .subscribe-form .btn{width:100%;}
}

/* roulang page: category2 */
:root{
  --bg-0:#060B14;
  --bg-1:#0A1220;
  --bg-2:#101B2E;
  --primary:#2B7FFF;
  --primary-600:#1E63E9;
  --primary-soft:rgba(43,127,255,.14);
  --accent:#35D6C0;
  --accent-soft:rgba(53,214,192,.12);
  --warn:#FF8A3D;
  --text-1:#E8EEF7;
  --text-2:#A7B8CE;
  --text-3:#6D7F96;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --glass:rgba(16,27,46,.55);
  --r-card:16px;
  --r-btn:10px;
  --r-pill:999px;
  --r-img:14px;
  --s1:0 2px 8px rgba(0,0,0,.25);
  --s2:0 12px 32px rgba(0,0,0,.35);
  --s3:0 18px 48px rgba(0,0,0,.45), 0 0 0 1px var(--line-strong);
  --font:-apple-system, BlinkMacSystemFont, "Inter", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", sans-serif;
  --mono:ui-monospace, "SFMono-Regular", "JetBrains Mono", Consolas, monospace;

  --bs-primary:#2B7FFF;
  --bs-body-bg:#0A1220;
  --bs-body-color:#E8EEF7;
  --bs-border-radius:16px;
  --bs-link-color:#35D6C0;
  --bs-link-hover-color:#E8EEF7;
  --bs-font-sans-serif:-apple-system, BlinkMacSystemFont, "Inter", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-1);
  color:var(--text-1);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--accent);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--text-1)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:650;color:var(--text-1);letter-spacing:.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{margin-bottom:40px;max-width:760px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.02em;color:var(--accent);
  background:var(--accent-soft);border:1px solid rgba(53,214,192,.24);
  padding:5px 14px;border-radius:var(--r-pill);margin-bottom:16px;
}
.section-title{font-size:clamp(22px,2.6vw,32px);line-height:1.35}
.section-desc{margin-top:14px;color:var(--text-2);font-size:16px;max-width:660px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(6,11,20,.78);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:height .25s ease, background .25s ease, border-color .25s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,214,192,.55),transparent);
  opacity:.4;transition:opacity .25s ease;
}
.site-header.scrolled::after{opacity:.85}
.header-inner{
  height:72px;display:flex;align-items:center;gap:28px;
  transition:height .25s ease;
}
.site-header.scrolled .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text-1);font-weight:700;font-size:17px;white-space:nowrap}
.brand:hover{color:var(--text-1)}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--primary);background:var(--primary-soft);
  border:1px solid rgba(43,127,255,.28);
}
.main-nav{display:flex;align-items:center;gap:32px;margin-left:12px}
.nav-link{
  position:relative;color:var(--text-2);font-size:15px;padding:6px 0;
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;
  background:var(--accent);border-radius:2px;transition:left .25s ease,right .25s ease;
}
.nav-link:hover,.nav-link.active{color:var(--text-1)}
.nav-link:hover::after,.nav-link.active::after{left:0;right:0}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:18px}
.header-textlink{color:var(--text-2);font-size:14px}
.header-textlink:hover{color:var(--accent)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line-strong);background:rgba(255,255,255,.04);
  flex-direction:column;justify-content:center;align-items:center;gap:5px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-1);border-radius:2px;transition:transform .25s ease,opacity .25s ease}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.mobile-drawer{
  position:fixed;left:0;right:0;top:72px;bottom:0;
  background:rgba(6,11,20,.97);
  backdrop-filter:blur(16px) saturate(140%);
  padding:28px 24px 40px;
  display:flex;flex-direction:column;gap:20px;
  transform:translateY(-12px);opacity:0;visibility:hidden;
  transition:opacity .25s ease,transform .25s ease,visibility .25s;
  overflow-y:auto;
}
.mobile-drawer.open{opacity:1;visibility:visible;transform:none}
.mobile-drawer .drawer-brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--text-1);margin-bottom:8px}
.mobile-drawer a.drawer-link{
  color:var(--text-2);font-size:18px;padding:10px 0;border-bottom:1px solid var(--line);
}
.mobile-drawer a.drawer-link.active{color:var(--accent)}
.mobile-drawer .drawer-cta{margin-top:auto}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;padding:12px 22px;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-sm{font-size:14px;padding:9px 16px}
.btn-lg{font-size:16px;padding:14px 28px}
.btn-pill{border-radius:var(--r-pill)}
.btn-glow{
  background:linear-gradient(180deg,var(--primary),var(--primary-600));
  color:#fff;box-shadow:0 0 0 1px rgba(255,255,255,.12) inset, 0 10px 28px rgba(43,127,255,.35);
}
.btn-glow:hover,.btn-glow:focus-visible{
  color:#fff;transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(255,255,255,.16) inset, 0 14px 34px rgba(43,127,255,.55);
}
.btn-glow:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(255,255,255,.12) inset, 0 6px 16px rgba(43,127,255,.35)}
.btn-glow.is-done{background:linear-gradient(180deg,#2FA89A,#22867A);box-shadow:0 0 0 1px rgba(255,255,255,.12) inset, 0 10px 26px rgba(53,214,192,.32)}
.btn-ghost{
  background:rgba(255,255,255,.03);color:var(--text-1);border-color:var(--line-strong);
}
.btn-ghost:hover{color:var(--text-1);background:rgba(53,214,192,.1);border-color:rgba(53,214,192,.45);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn:disabled,.btn.disabled{filter:saturate(.4);opacity:.7;cursor:not-allowed}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;padding:76px 0 72px;overflow:hidden;
  background-image:linear-gradient(135deg,rgba(10,18,32,.94) 0%,rgba(10,18,32,.78) 45%,rgba(43,127,255,.18) 100%),
                   url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center right;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(700px 320px at 82% 18%,rgba(53,214,192,.16),transparent 70%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.crumb{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-3);margin-bottom:22px;flex-wrap:wrap}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--accent)}
.crumb .sep{color:var(--text-3)}
.page-hero h1{
  font-size:clamp(28px,4.2vw,46px);line-height:1.25;font-weight:700;
  max-width:820px;margin-bottom:18px;
}
.hero-lead{color:var(--text-2);font-size:17px;max-width:640px}
.hero-pills{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.pill-stat{
  display:inline-flex;align-items:baseline;gap:8px;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-pill);
  padding:9px 18px;font-size:14px;color:var(--text-2);
  backdrop-filter:blur(14px) saturate(140%);
}
.pill-stat b{font-family:var(--mono);font-size:17px;color:var(--accent);font-weight:700}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}

/* ---------- filter chips ---------- */
.filter-bar{
  display:flex;flex-wrap:wrap;gap:12px;margin-bottom:34px;
  padding-bottom:22px;border-bottom:1px solid var(--line);
}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.03);border:1px solid var(--line);
  color:var(--text-2);border-radius:var(--r-pill);
  padding:9px 18px;font-size:14px;cursor:pointer;
  transition:all .2s ease;
}
.chip i{font-size:12px;color:var(--text-3);transition:color .2s ease}
.chip:hover{color:var(--text-1);border-color:var(--line-strong);transform:translateY(-1px)}
.chip.active{
  color:var(--accent);border-color:rgba(53,214,192,.45);
  background:var(--accent-soft);
}
.chip.active i{color:var(--accent)}
.filter-note{font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:8px;margin-bottom:34px}

/* ---------- flow card grid ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.flow-card{
  position:relative;display:flex;flex-direction:column;
  background:var(--glass);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--s1);
  backdrop-filter:blur(14px) saturate(140%);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.flow-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,.14),transparent);
  z-index:3;pointer-events:none;
}
.flow-card:hover{transform:translateY(-2px);box-shadow:var(--s3);border-color:var(--line-strong)}
.flow-card .thumb{
  position:relative;aspect-ratio:16/10;overflow:hidden;
  border-bottom:1px solid var(--line);
}
.flow-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.flow-card:hover .thumb img{transform:scale(1.03)}
.flow-card .thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,20,.05),rgba(6,11,20,.55));
}
.card-index{
  position:absolute;top:14px;left:14px;z-index:4;
  font-family:var(--mono);font-size:13px;font-weight:700;
  color:var(--text-1);background:rgba(6,11,20,.72);
  border:1px solid rgba(53,214,192,.4);border-radius:8px;
  padding:3px 10px;letter-spacing:.06em;
}
.flow-card .body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
  font-size:13px;letter-spacing:.02em;color:var(--accent);
  background:var(--accent-soft);border:1px solid rgba(53,214,192,.24);
  border-radius:var(--r-pill);padding:4px 12px;
}
.badge-soft.blue{color:#8FBDFF;background:var(--primary-soft);border-color:rgba(43,127,255,.3)}
.flow-card h3{font-size:19px;line-height:1.4}
.flow-card p{color:var(--text-2);font-size:15px}
.card-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.card-foot .go{display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-weight:600}
.card-foot .go i{transition:transform .25s ease}
.flow-card:hover .card-foot .go i{transform:translateX(4px)}
.flow-card .hit{position:absolute;inset:0;z-index:5;border-radius:var(--r-card)}

/* ---------- steps ---------- */
.steps-wrap{position:relative;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);padding:44px 40px;box-shadow:var(--s1)}
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:24px}
.step{position:relative;padding-top:34px}
.step::before{content:"";position:absolute;top:11px;left:0;right:0;height:2px;background:var(--line-strong)}
.step:last-child::before{right:calc(100% - 2px)}
.step .dot{
  position:absolute;top:3px;left:0;width:18px;height:18px;border-radius:50%;
  background:var(--bg-2);border:2px solid var(--accent);z-index:2;
}
.step.active .dot{background:var(--accent);box-shadow:0 0 0 5px rgba(53,214,192,.14)}
.step .step-no{font-family:var(--mono);font-size:13px;color:var(--text-3);letter-spacing:.08em;display:block;margin-bottom:8px}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14px;color:var(--text-2);line-height:1.7}
.step.active h3{color:var(--accent)}

/* ---------- pitfalls ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:start}
.pit-list{display:flex;flex-direction:column;gap:16px}
.pit-item{
  display:flex;gap:16px;align-items:flex-start;
  background:rgba(255,255,255,.02);border:1px solid var(--line);
  border-radius:14px;padding:20px 22px;transition:border-color .2s ease,transform .2s ease;
}
.pit-item:hover{border-color:var(--line-strong);transform:translateX(3px)}
.pit-item .ic{
  flex:0 0 34px;width:34px;height:34px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--accent-soft);color:var(--accent);font-size:14px;
}
.pit-item.warn .ic{background:rgba(255,138,61,.12);color:var(--warn)}
.pit-item h3{font-size:16px;margin-bottom:6px}
.pit-item p{font-size:14px;color:var(--text-2)}
.media-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--s2);backdrop-filter:blur(14px) saturate(140%);
}
.media-card img{width:100%;aspect-ratio:16/11;object-fit:cover;border-bottom:1px solid var(--line)}
.media-card .cap{padding:22px 24px}
.media-card .cap h3{font-size:18px;margin-bottom:10px}
.media-card .cap p{color:var(--text-2);font-size:14px}
.media-card .mini-stats{display:flex;gap:26px;margin-top:18px;padding-top:18px;border-top:1px solid var(--line)}
.media-card .mini-stats div span{display:block;font-family:var(--mono);font-size:18px;color:var(--accent);font-weight:700}
.media-card .mini-stats div em{font-style:normal;font-size:13px;color:var(--text-3)}

/* ---------- index strip ---------- */
.index-strip{
  display:grid;grid-template-columns:repeat(3,1fr);
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;backdrop-filter:blur(14px) saturate(140%);
}
.index-strip .cell{padding:30px 28px;border-right:1px solid var(--line)}
.index-strip .cell:last-child{border-right:none}
.index-strip .cell b{display:block;font-family:var(--mono);font-size:30px;color:var(--text-1);line-height:1.2;margin-bottom:8px}
.index-strip .cell b em{font-style:normal;font-size:14px;color:var(--accent);margin-left:6px}
.index-strip .cell strong{display:block;font-size:16px;font-weight:600;margin-bottom:6px}
.index-strip .cell p{font-size:14px;color:var(--text-2)}

/* ---------- faq ---------- */
.faq-wrap{max-width:880px}
.accordion-item{
  background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--r-card);margin-bottom:14px;overflow:hidden;
}
.accordion-button{
  background:transparent;color:var(--text-1);font-size:17px;font-weight:600;
  padding:22px 26px;box-shadow:none;border-radius:var(--r-card);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.accordion-button:not(.collapsed){color:var(--accent);background:rgba(53,214,192,.06)}
.accordion-button:focus{box-shadow:0 0 0 2px rgba(53,214,192,.5);border-color:transparent}
.accordion-button::after{
  content:"+";font-family:var(--mono);font-size:22px;line-height:1;
  background-image:none;color:var(--accent);
  width:26px;height:26px;display:flex;align-items:center;justify-content:center;
  transform:none;transition:transform .25s ease;flex:0 0 26px;
}
.accordion-button:not(.collapsed)::after{content:"−";transform:rotate(90deg)}
.accordion-body{
  padding:0 26px 24px;color:var(--text-2);font-size:15px;
  border-top:1px solid rgba(53,214,192,.4);margin-top:0;padding-top:20px;
}

/* ---------- cta banner ---------- */
.cta-banner{
  background:var(--glass);border:1px solid var(--line);
  border-radius:var(--r-card);padding:40px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  backdrop-filter:blur(14px) saturate(140%);box-shadow:var(--s2);
  position:relative;overflow:hidden;
}
.cta-banner::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,.16),transparent 70%);
}
.cta-banner h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:10px}
.cta-banner p{color:var(--text-2);font-size:15px;max-width:520px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto}

/* ---------- footer ---------- */
.site-footer{
  margin-top:88px;background:var(--bg-0);
  border-top:1px solid var(--line);position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,214,192,.5),transparent);
}
.footer-top{
  display:grid;grid-template-columns:1.4fr .8fr .9fr 1.2fr;gap:40px;
  padding:66px 0 46px;
}
.footer-col h4{font-size:14px;font-weight:600;letter-spacing:.04em;color:var(--text-1);margin-bottom:18px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;margin-bottom:16px}
.footer-brand .brand-mark{width:32px;height:32px;flex:0 0 32px}
.footer-text{font-size:14px;color:var(--text-2);line-height:1.75;max-width:340px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col ul a{font-size:14px;color:var(--text-2);display:inline-block;transition:color .2s ease,transform .2s ease}
.footer-col ul a:hover{color:var(--accent);transform:translateX(2px)}
.subscribe-form{display:flex;gap:10px;margin:6px 0 12px;flex-wrap:wrap}
.subscribe-form input{
  flex:1 1 170px;min-width:0;
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  border-radius:var(--r-btn);padding:10px 14px;color:var(--text-1);font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.subscribe-form input::placeholder{color:var(--text-3)}
.subscribe-form input:focus{
  outline:none;border-color:rgba(53,214,192,.6);
  box-shadow:0 0 0 2px rgba(53,214,192,.28);
  background:rgba(255,255,255,.06);
}
.footer-note{font-size:13px;color:var(--text-3)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding:22px 0 30px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.to-top{display:inline-flex;align-items:center;gap:6px;color:var(--text-2);font-size:13px}
.to-top:hover{color:var(--accent)}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .flow-grid{grid-template-columns:repeat(3,1fr)}
  .footer-top{grid-template-columns:1.3fr 1fr 1fr;gap:34px}
  .footer-col:last-child{grid-column:1 / -1}
}
@media (max-width:991.98px){
  .main-nav{display:none}
  .header-textlink{display:none}
  .nav-toggle{display:flex}
  .section{padding:64px 0}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr);gap:28px}
  .step:last-child::before{right:0}
  .split{grid-template-columns:1fr;gap:36px}
  .index-strip{grid-template-columns:1fr}
  .index-strip .cell{border-right:none;border-bottom:1px solid var(--line)}
  .index-strip .cell:last-child{border-bottom:none}
  .cta-banner{flex-direction:column;align-items:flex-start;padding:34px 30px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px}
  .footer-col:last-child{grid-column:1 / -1}
  .site-footer{margin-top:64px}
}
@media (max-width:767.98px){
  .container{padding:0 16px}
  .page-hero{padding:56px 0 52px}
  .section{padding:48px 0}
  .section-head{margin-bottom:28px}
  .flow-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;gap:24px}
  .step{padding-top:0;padding-left:34px}
  .step::before{
    top:0;bottom:-24px;left:8px;right:auto;width:2px;height:auto;
    background:linear-gradient(180deg,var(--line-strong),var(--line-strong));
  }
  .step:last-child::before{display:none}
  .step .dot{top:2px;left:0}
  .steps-wrap{padding:30px 22px}
  .flow-card .body{padding:20px 18px}
  .footer-top{grid-template-columns:1fr;gap:30px;padding:46px 0 30px}
  .footer-brand{font-size:16px}
  .cta-banner{padding:28px 22px}
  .accordion-button{font-size:16px;padding:18px 20px}
  .accordion-body{padding:16px 20px 20px}
  .page-hero h1{font-size:clamp(26px,7vw,34px)}
}
@media (max-width:575.98px){
  .brand-text{font-size:15px}
  .hero-actions .btn{width:100%}
  .pill-stat{font-size:13px;padding:8px 14px}
  .filter-bar{gap:8px;padding-bottom:16px;margin-bottom:26px}
  .chip{font-size:13px;padding:8px 14px}
}

/* roulang page: category3 */
:root{
  --bg-0:#060B14;
  --bg-1:#0A1220;
  --bg-2:#101B2E;
  --primary:#2B7FFF;
  --primary-600:#1E63E9;
  --primary-soft:rgba(43,127,255,.14);
  --accent:#35D6C0;
  --accent-soft:rgba(53,214,192,.14);
  --warn:#FF8A3D;
  --text-1:#E8EEF7;
  --text-2:#A7B8CE;
  --text-3:#6D7F96;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --glass:rgba(16,27,46,.55);
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --r-img:12px;
  --s1:0 2px 8px rgba(0,0,0,.25);
  --s2:0 12px 32px rgba(0,0,0,.35);
  --s3:0 18px 48px rgba(0,0,0,.45), 0 0 0 1px rgba(255,255,255,.16);
  --font-sans:-apple-system, BlinkMacSystemFont, "Inter", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", sans-serif;

  --bs-primary:#2B7FFF;
  --bs-body-bg:#0A1220;
  --bs-body-color:#E8EEF7;
  --bs-border-radius:12px;
  --bs-link-color:#35D6C0;
  --bs-link-hover-color:#E8EEF7;
  --bs-font-sans-serif:-apple-system, BlinkMacSystemFont, "Inter", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", sans-serif;
  --bs-body-font-family:-apple-system, BlinkMacSystemFont, "Inter", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-1);
  color:var(--text-1);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--accent);text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--text-1);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:650;color:var(--text-1);}
p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1030;
  height:72px;
  background:rgba(6,11,20,.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:height .28s ease, background .28s ease, border-color .28s ease, box-shadow .28s ease;
}
.site-header::after{
  content:"";
  position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,214,192,.45),transparent);
  opacity:.4;
  transition:opacity .28s ease;
  pointer-events:none;
}
.site-header.scrolled{
  height:60px;
  background:rgba(6,11,20,.9);
  box-shadow:var(--s2);
  border-bottom-color:var(--line-strong);
}
.site-header.scrolled::after{opacity:.85;}

.header-inner{
  height:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--text-1);
  font-size:17px;
  font-weight:700;
  letter-spacing:.01em;
  white-space:nowrap;
  flex-shrink:0;
}
.brand:hover{color:var(--text-1);}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;height:36px;
  border-radius:11px;
  color:var(--primary);
  background:linear-gradient(140deg,rgba(43,127,255,.22),rgba(53,214,192,.1));
  border:1px solid var(--line-strong);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.12);
  flex-shrink:0;
}

.main-nav{
  display:flex;
  align-items:center;
  gap:32px;
  margin-left:auto;
  margin-right:auto;
}
.nav-link{
  position:relative;
  color:var(--text-2);
  font-size:15px;
  font-weight:500;
  padding:6px 0;
  white-space:nowrap;
  transition:color .22s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;right:50%;bottom:0;
  height:2px;
  background:var(--accent);
  border-radius:2px;
  transition:left .26s ease, right .26s ease;
}
.nav-link:hover{color:var(--text-1);}
.nav-link:hover::after{left:0;right:0;}
.nav-link.active{color:var(--text-1);font-weight:600;}
.nav-link.active::after{left:0;right:0;}

.header-actions{
  display:flex;
  align-items:center;
  gap:16px;
  flex-shrink:0;
}
.link-quiet{
  color:var(--text-3);
  font-size:14px;
  white-space:nowrap;
}
.link-quiet:hover{color:var(--accent);}

.nav-toggle{
  display:none;
  width:40px;height:40px;
  border-radius:10px;
  border:1px solid var(--line-strong);
  background:rgba(255,255,255,.04);
  color:var(--text-1);
  align-items:center;
  justify-content:center;
  cursor:pointer;
}
.nav-toggle svg{width:18px;height:18px;}

/* 移动抽屉 */
.mobile-drawer{
  position:fixed;
  inset:0;
  z-index:1040;
  background:rgba(6,11,20,.94);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  padding:24px;
  display:none;
  flex-direction:column;
}
.mobile-drawer.open{display:flex;}
.drawer-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:20px;
  border-bottom:1px solid var(--line);
}
.drawer-close{
  width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line-strong);
  background:transparent;color:var(--text-1);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
}
.drawer-nav{
  display:flex;
  flex-direction:column;
  gap:20px;
  margin-top:32px;
}
.drawer-nav a{
  color:var(--text-2);
  font-size:18px;
  font-weight:500;
  padding:6px 0;
}
.drawer-nav a.active{color:var(--accent);font-weight:600;}
.drawer-foot{
  margin-top:auto;
  padding-top:24px;
  border-top:1px solid var(--line);
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  padding:12px 22px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .22s ease, box-shadow .22s ease, background .22s ease, color .22s ease, border-color .22s ease;
  white-space:nowrap;
}
.btn-sm{font-size:14px;padding:9px 16px;}
.btn-block{width:100%;}
.btn-glow{
  color:#fff;
  background:linear-gradient(135deg,var(--primary),var(--primary-600));
  box-shadow:0 0 0 1px rgba(43,127,255,.5), 0 10px 28px rgba(43,127,255,.35);
  border-radius:999px;
}
.btn-glow:hover{
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(43,127,255,.7), 0 14px 32px rgba(43,127,255,.55);
}
.btn-glow:active{
  transform:translateY(0);
  box-shadow:0 0 0 1px rgba(43,127,255,.6), 0 6px 16px rgba(43,127,255,.35);
}
.btn-ghost{
  color:var(--text-1);
  background:rgba(255,255,255,.03);
  border-color:var(--line-strong);
  border-radius:999px;
}
.btn-ghost:hover{
  color:var(--text-1);
  border-color:var(--accent);
  background:var(--accent-soft);
  transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(0);}
.btn-outline-sq{
  border-radius:var(--r-btn);
  color:var(--text-2);
  background:transparent;
  border-color:var(--line-strong);
}
.btn-outline-sq:hover{
  color:var(--text-1);
  border-color:var(--accent);
  background:var(--accent-soft);
}
.btn.is-copied{
  color:var(--accent);
  border-color:var(--accent);
  background:var(--accent-soft);
}

/* ============ 徽章 / 标签 ============ */
.badge-pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  font-size:13px;
  letter-spacing:.02em;
  color:var(--accent);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.badge-pill.blue{color:#8FB8FF;background:var(--primary-soft);border-color:rgba(43,127,255,.28);}
.badge-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:26px;height:22px;
  padding:0 8px;
  border-radius:999px;
  font-size:12px;
  font-weight:700;
  color:var(--text-2);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  font-variant-numeric:tabular-nums;
}

/* ============ 面包屑 ============ */
.breadcrumb-row{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  flex-wrap:wrap;
}
.breadcrumb-row a{color:var(--text-3);}
.breadcrumb-row a:hover{color:var(--accent);}
.breadcrumb-row .sep{color:var(--text-3);opacity:.6;}
.breadcrumb-row .cur{color:var(--text-2);}

/* ============ 内页 Hero ============ */
.page-hero{
  position:relative;
  padding:150px 0 72px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero-bg{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center;
  opacity:.28;
  transform:scale(1.04);
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(135deg, var(--bg-1) 12%, rgba(43,127,255,.18) 130%);
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(6,11,20,.55) 0%, rgba(10,18,32,.72) 60%, var(--bg-1) 100%);
}
.page-hero .container{position:relative;z-index:2;}

.hero-title{
  font-size:clamp(28px,4.2vw,46px);
  line-height:1.25;
  font-weight:700;
  margin:18px 0 16px;
  max-width:820px;
}
.hero-sub{
  font-size:17px;
  line-height:1.8;
  color:var(--text-2);
  max-width:680px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:28px;
}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:34px;
}
.stat-chip{
  display:flex;
  align-items:baseline;
  gap:8px;
  padding:10px 16px;
  border-radius:999px;
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--s1);
}
.stat-chip .num{
  font-size:18px;
  font-weight:700;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}
.stat-chip .txt{font-size:13px;color:var(--text-2);}

/* ============ 通用板块 ============ */
.section{padding:88px 0;}
.section.tight{padding:64px 0;}
.section-alt{
  background:
    radial-gradient(900px 380px at 12% 0%, rgba(43,127,255,.10), transparent 70%),
    var(--bg-0);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
  flex-wrap:wrap;
}
.section-title{
  font-size:clamp(22px,2.6vw,32px);
  line-height:1.35;
  font-weight:650;
}
.section-desc{
  margin-top:10px;
  font-size:15px;
  color:var(--text-2);
  max-width:720px;
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--accent);
}
.text-link svg{transition:transform .22s ease;}
.text-link:hover svg{transform:translateX(4px);}

/* ============ 玻璃卡片 ============ */
.glass-card{
  position:relative;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--s1);
  transition:transform .26s ease, box-shadow .26s ease, border-color .26s ease;
}
.glass-card::before{
  content:"";
  position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg, rgba(255,255,255,.14), transparent 70%);
  border-radius:var(--r-card) var(--r-card) 0 0;
  pointer-events:none;
}
.glass-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--s3);
  border-color:var(--line-strong);
}

/* ============ 安全强度块 ============ */
.strength-wrap{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:48px;
  align-items:center;
}
.strength-list{display:flex;flex-direction:column;gap:24px;margin-top:28px;}
.strength-item{display:flex;flex-direction:column;gap:10px;}
.strength-top{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.strength-name{font-size:15px;font-weight:600;color:var(--text-1);}
.strength-val{
  font-size:13px;color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.bar{
  height:8px;
  border-radius:999px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  overflow:hidden;
}
.bar span{
  display:block;height:100%;
  border-radius:999px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
}
.bar.warn span{background:linear-gradient(90deg,#FF8A3D,#FFB37A);}
.strength-note{
  margin-top:8px;
  font-size:12.5px;
  color:var(--text-3);
}
.frame-img{
  border-radius:16px;
  border:1px solid var(--line-strong);
  overflow:hidden;
  box-shadow:var(--s2);
  background:var(--bg-2);
}
.frame-img img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
}

/* ============ 时间轴 ============ */
.tl-layout{
  display:grid;
  grid-template-columns:minmax(0,8fr) minmax(0,4fr);
  gap:40px;
  align-items:start;
}
.timeline{
  position:relative;
  padding-left:56px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:19px;top:10px;bottom:10px;
  width:2px;
  background:linear-gradient(180deg, rgba(53,214,192,.55) 0%, rgba(43,127,255,.4) 45%, rgba(43,127,255,0) 100%);
}
.tl-item{
  position:relative;
  margin-bottom:28px;
}
.tl-item:last-child{margin-bottom:0;}
.tl-node{
  position:absolute;
  left:-56px;
  top:18px;
  width:40px;height:40px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:13px;
  font-weight:700;
  color:var(--accent);
  background:linear-gradient(140deg,rgba(16,27,46,.95),rgba(10,18,32,.95));
  border:1px solid rgba(53,214,192,.45);
  box-shadow:0 0 0 4px rgba(10,18,32,.9), 0 0 18px rgba(53,214,192,.22);
  font-variant-numeric:tabular-nums;
  z-index:2;
}
.tl-card{padding:24px 26px;}
.tl-head{
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
  margin-bottom:10px;
}
.tl-title{
  font-size:19px;
  font-weight:650;
  line-height:1.4;
}
.tl-text{
  font-size:15px;
  color:var(--text-2);
  line-height:1.75;
}
.tl-points{
  margin-top:16px;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.tl-points li{
  position:relative;
  padding-left:18px;
  font-size:14px;
  color:var(--text-2);
  line-height:1.7;
}
.tl-points li::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 8px rgba(53,214,192,.6);
}
.tl-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:18px;
  padding-top:16px;
  border-top:1px dashed var(--line);
}

/* 侧栏 */
.side-sticky{
  position:sticky;
  top:96px;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.side-card{padding:22px;}
.side-title{
  font-size:14px;
  font-weight:600;
  letter-spacing:.04em;
  color:var(--text-3);
  margin-bottom:14px;
}
.index-list{display:flex;flex-direction:column;gap:2px;}
.index-list a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:9px 10px;
  border-radius:10px;
  font-size:14px;
  color:var(--text-2);
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.index-list a:hover{
  background:var(--primary-soft);
  color:var(--text-1);
  transform:translateX(2px);
}
.index-list .idx{
  font-size:12px;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  font-weight:700;
  min-width:22px;
}
.side-note{
  font-size:13.5px;
  color:var(--text-2);
  line-height:1.75;
}
.side-note strong{color:var(--warn);font-weight:600;}
.side-divider{height:1px;background:var(--line);margin:16px 0;}
.side-back{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  font-size:14px;
  color:var(--text-2);
}
.side-back:hover{color:var(--accent);}

/* ============ 情形对照行 ============ */
.scene-list{
  display:flex;
  flex-direction:column;
  gap:14px;
}
.scene-row{
  display:grid;
  grid-template-columns:220px minmax(0,1fr) 150px;
  gap:24px;
  align-items:center;
  padding:20px 24px;
  border-radius:var(--r-card);
  background:rgba(255,255,255,.02);
  border:1px solid var(--line);
  transition:background .24s ease,border-color .24s ease,transform .24s ease;
}
.scene-row:hover{
  background:var(--glass);
  border-color:var(--line-strong);
  transform:translateX(3px);
}
.scene-name{
  font-size:15.5px;
  font-weight:600;
  color:var(--text-1);
}
.scene-desc{
  font-size:14px;
  color:var(--text-2);
  line-height:1.7;
}
.scene-act{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:10px;
  font-size:13px;
  color:var(--text-3);
}
.scene-act .dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--warn);
  box-shadow:0 0 10px rgba(255,138,61,.55);
}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.accordion-item{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-card) !important;
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .24s ease,box-shadow .24s ease;
}
.accordion-item:has(.accordion-button:not(.collapsed)){
  border-color:rgba(53,214,192,.42);
  box-shadow:var(--s2);
}
.accordion-button{
  background:transparent;
  color:var(--text-1);
  font-size:16px;
  font-weight:600;
  padding:20px 54px 20px 24px;
  box-shadow:none !important;
  position:relative;
  transition:color .22s ease;
}
.accordion-button::after{display:none !important;}
.accordion-button::before{
  content:"＋";
  position:absolute;
  right:22px;top:50%;
  transform:translateY(-50%);
  font-size:18px;
  color:var(--text-3);
  transition:transform .28s ease,color .22s ease;
}
.accordion-button:not(.collapsed){color:var(--accent);background:rgba(53,214,192,.05);}
.accordion-button:not(.collapsed)::before{
  content:"－";
  color:var(--accent);
  transform:translateY(-50%) rotate(180deg);
}
.accordion-button:focus{border-color:transparent;}
.accordion-body{
  padding:0 24px 22px;
  color:var(--text-2);
  font-size:14.5px;
  line-height:1.8;
}
.accordion-collapse.show .accordion-body{
  border-top:1px solid rgba(53,214,192,.55);
  padding-top:18px;
  margin-top:2px;
}

/* ============ CTA 横幅 ============ */
.cta-banner{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--line-strong);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  padding:36px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  box-shadow:var(--s2);
}
.cta-banner::before{
  content:"";
  position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg, rgba(255,255,255,.2), transparent 65%);
}
.cta-banner::after{
  content:"";
  position:absolute;
  right:-120px;top:-120px;
  width:320px;height:320px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(43,127,255,.28), transparent 68%);
  pointer-events:none;
}
.cta-text h3{font-size:22px;font-weight:650;margin-bottom:8px;}
.cta-text p{font-size:14.5px;color:var(--text-2);max-width:560px;}
.cta-actions{
  display:flex;
  gap:12px;
  flex-shrink:0;
  position:relative;
  z-index:2;
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-0);
  border-top:1px solid var(--line);
  padding:64px 0 24px;
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,214,192,.35),transparent);
}
.footer-top{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.3fr;
  gap:40px;
  padding-bottom:40px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:16px;
  font-weight:700;
  color:var(--text-1);
  margin-bottom:14px;
}
.footer-brand .brand-mark{background:linear-gradient(140deg,rgba(43,127,255,.2),rgba(53,214,192,.08));}
.footer-text{
  font-size:14px;
  color:var(--text-3);
  line-height:1.8;
  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:11px;}
.footer-col ul a{
  font-size:14px;
  color:var(--text-3);
  transition:color .2s ease,transform .2s ease;
  display:inline-block;
}
.footer-col ul a:hover{
  color:var(--accent);
  transform:translateX(2px);
}
.subscribe-form{
  display:flex;
  gap:10px;
  margin-top:6px;
  flex-wrap:wrap;
}
.subscribe-form input{
  flex:1 1 150px;
  min-width:0;
  padding:11px 14px;
  font-size:14px;
  color:var(--text-1);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:var(--r-input);
  transition:border-color .22s ease,box-shadow .22s ease;
}
.subscribe-form input::placeholder{color:var(--text-3);}
.subscribe-form input:focus{
  outline:none;
  border-color:var(--accent);
  box-shadow:0 0 0 2px rgba(53,214,192,.35);
  background:rgba(255,255,255,.06);
}
.footer-note{
  margin-top:12px;
  font-size:12.5px;
  color:var(--text-3);
  line-height:1.7;
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding-top:22px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
  flex-wrap:wrap;
}
.to-top{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--text-3);
  font-size:13px;
}
.to-top:hover{color:var(--accent);}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .footer-top{grid-template-columns:1.3fr 1fr 1fr 1.2fr;gap:32px;}
}
@media (max-width:992px){
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .link-quiet{display:none;}
  .header-inner{gap:16px;}
  .section{padding:64px 0;}
  .page-hero{padding:128px 0 56px;}
  .tl-layout{grid-template-columns:1fr;gap:32px;}
  .side-sticky{position:static;}
  .strength-wrap{grid-template-columns:1fr;gap:32px;}
  .scene-row{grid-template-columns:180px minmax(0,1fr);gap:16px;}
  .scene-act{grid-column:2;justify-content:flex-start;}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-banner{flex-direction:column;align-items:flex-start;padding:30px;}
  .cta-actions{width:100%;}
}
@media (max-width:768px){
  .container{padding-left:16px;padding-right:16px;}
  .section{padding:48px 0;}
  .hero-sub{font-size:15.5px;}
  .hero-title{margin-top:14px;}
  .timeline{padding-left:44px;}
  .timeline::before{left:15px;}
  .tl-node{left:-44px;width:32px;height:32px;font-size:12px;top:16px;}
  .tl-card{padding:20px 18px;}
  .scene-row{grid-template-columns:1fr;padding:18px;}
  .scene-act{grid-column:1;}
  .footer-top{grid-template-columns:1fr;gap:28px;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .stat-chip{padding:8px 14px;}
  .stat-chip .num{font-size:16px;}
}
@media (max-width:520px){
  .brand{font-size:15px;}
  .brand-text{max-width:150px;overflow:hidden;text-overflow:ellipsis;}
  .header-actions .btn-sm{padding:8px 12px;font-size:13px;}
  .hero-actions .btn{width:100%;}
  .tl-title{font-size:17px;}
  .section-title{font-size:22px;}
}