/* roulang page: index */
:root{
  --bg:#070B1E;
  --panel:#0E1533;
  --panel-2:#111a3d;
  --glass:rgba(255,255,255,.045);
  --glass-2:rgba(255,255,255,.07);
  --primary:#3A6BFF;
  --cyan:#35E0D8;
  --gold:#FFC46B;
  --text:#E8ECF8;
  --muted:#A6B0CC;
  --line:rgba(255,255,255,.10);
  --line-soft:rgba(255,255,255,.06);
  --r-card:18px;
  --r-btn:12px;
  --r-pill:999px;
  --shadow:0 18px 40px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.08);
  --shadow-sm:0 10px 24px rgba(0,0,0,.35), inset 0 1px 0 rgba(255,255,255,.06);
  --glow:0 0 24px rgba(53,224,216,.35);
  --maxw:1200px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16.5px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  position:relative;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  opacity:.06;
  background-image:
    radial-gradient(1.6px 1.6px at 12% 18%, #ffffff, transparent 60%),
    radial-gradient(1.4px 1.4px at 32% 72%, #35E0D8, transparent 60%),
    radial-gradient(1.8px 1.8px at 58% 26%, #ffffff, transparent 60%),
    radial-gradient(1.3px 1.3px at 74% 64%, #3A6BFF, transparent 60%),
    radial-gradient(1.5px 1.5px at 88% 12%, #ffffff, transparent 60%),
    radial-gradient(1.2px 1.2px at 46% 88%, #FFC46B, transparent 60%);
}
body::after{
  content:"";
  position:fixed;
  top:-380px;
  right:-260px;
  width:900px;
  height:900px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(58,107,255,.22), rgba(7,11,30,0) 62%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--cyan);}
button,input{font-family:inherit;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;}
.container{max-width:var(--maxw);padding-left:24px;padding-right:24px;position:relative;z-index:2;}
.mono{font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;font-variant-numeric:tabular-nums;}
.section{padding:104px 0;position:relative;z-index:2;}
.section-sm{padding:72px 0;position:relative;z-index:2;}
.divider-aurora{height:1px;background:linear-gradient(90deg,transparent,rgba(53,224,216,.32),transparent);}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0;line-height:1.35;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:0;color:var(--cyan);
  background:rgba(53,224,216,.08);
  border:1px solid rgba(53,224,216,.24);
  border-radius:var(--r-pill);
  padding:5px 14px;margin-bottom:18px;
}
.eyebrow i{font-size:12px;color:var(--gold);}
.sec-title{font-size:30px;margin-bottom:14px;}
.sec-sub{color:var(--muted);font-size:16px;max-width:720px;}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:44px;flex-wrap:wrap;}

/* 导航 */
.site-header{position:fixed;top:16px;left:0;right:0;z-index:1000;transition:top .25s ease;}
.nav-shell{
  max-width:var(--maxw);margin:0 auto;
  background:rgba(14,21,51,.62);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-pill);
  padding:10px 12px 10px 20px;
  display:flex;align-items:center;gap:18px;
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.scrolled .nav-shell{
  background:rgba(9,14,36,.88);
  box-shadow:0 16px 38px rgba(0,0,0,.5);
  border-color:rgba(255,255,255,.14);
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%, #6f92ff, #2b4dd6 62%, #16255f);
  position:relative;flex-shrink:0;
  box-shadow:0 0 18px rgba(58,107,255,.45);
}
.brand-mark::after{
  content:"";position:absolute;inset:9px -4px;border-radius:50%;
  border:1.6px solid rgba(53,224,216,.85);
  transform:rotate(-22deg);
}
.brand-text{font-size:15.5px;font-weight:700;color:#fff;line-height:1.2;white-space:nowrap;}
.brand-text small{display:block;font-size:11px;font-weight:400;color:var(--muted);line-height:1.4;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-links a{
  font-size:14.5px;color:var(--muted);padding:9px 14px;border-radius:var(--r-pill);
  position:relative;white-space:nowrap;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.06);}
.nav-links a.active{color:#fff;background:rgba(58,107,255,.18);}
.nav-links a.active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:22px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--primary));
  box-shadow:0 0 10px rgba(53,224,216,.8);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.06);border:1px solid var(--line);
  color:#fff;font-size:17px;align-items:center;justify-content:center;cursor:pointer;
}
.mobile-panel{
  max-width:var(--maxw);margin:10px auto 0;
  background:rgba(9,14,36,.96);border:1px solid var(--line);
  border-radius:20px;padding:14px;display:none;
  backdrop-filter:blur(14px);
  box-shadow:0 20px 40px rgba(0,0,0,.5);
}
.mobile-panel.open{display:block;}
.mobile-panel a{
  display:block;padding:12px 14px;border-radius:12px;color:var(--muted);font-size:15px;
}
.mobile-panel a:hover,.mobile-panel a.active{background:rgba(58,107,255,.16);color:#fff;}
.mobile-panel .m-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:10px;}

/* 按钮 */
.btn-main,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn-main{
  background:linear-gradient(135deg,var(--cyan),var(--primary));
  color:#04102a;
  box-shadow:0 0 24px rgba(53,224,216,.35), inset 0 1px 0 rgba(255,255,255,.35);
}
.btn-main:hover{color:#04102a;transform:translateY(-2px);box-shadow:0 0 32px rgba(53,224,216,.5), inset 0 1px 0 rgba(255,255,255,.4);}
.btn-main:active{transform:translateY(0);}
.btn-ghost{
  background:rgba(255,255,255,.05);border-color:var(--line);color:var(--text);
}
.btn-ghost:hover{color:#fff;border-color:rgba(53,224,216,.5);background:rgba(255,255,255,.09);transform:translateY(-2px);}
.btn-pill{border-radius:var(--r-pill);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.text-link{color:var(--cyan);font-size:14.5px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.text-link i{transition:transform .2s ease;}
.text-link:hover i{transform:translateX(4px);}

/* Hero */
.hero{padding:158px 0 96px;position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:56px;align-items:center;}
.hero h1{font-size:44px;line-height:1.24;margin-bottom:20px;}
.hero h1 span{
  background:linear-gradient(120deg,var(--cyan),#8fb0ff 60%,var(--primary));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{font-size:17px;color:var(--muted);max-width:560px;margin-bottom:24px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;}
.tag{
  font-size:13.5px;color:#cfd8f5;padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
}
.tag i{color:var(--gold);font-size:11px;margin-right:6px;}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;}
.hero-meta{display:flex;gap:26px;margin-top:30px;flex-wrap:wrap;}
.hero-meta div{font-size:13px;color:var(--muted);}
.hero-meta strong{display:block;font-size:22px;color:var(--cyan);}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;border-radius:20px;border:1px solid var(--line);
  box-shadow:var(--shadow);object-fit:cover;aspect-ratio:4/3.1;
}
.hero-visual::after{
  content:"";position:absolute;inset:0;border-radius:20px;pointer-events:none;
  background:linear-gradient(140deg,rgba(53,224,216,.16),rgba(7,11,30,0) 46%,rgba(58,107,255,.2));
}
.glass-login{
  position:absolute;left:-22px;bottom:-32px;width:290px;
  background:rgba(12,18,45,.82);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,.12);
  border-radius:20px;padding:20px;
  box-shadow:var(--shadow);
}
.glass-login .gl-head{
  font-size:14px;font-weight:700;color:#fff;margin-bottom:14px;
  display:flex;align-items:center;gap:8px;
}
.gl-dot{width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);}
.gl-field{margin-bottom:12px;}
.gl-field label{display:block;font-size:12.5px;color:var(--muted);margin-bottom:6px;}
.gl-input{
  height:42px;border-radius:var(--r-btn);background:rgba(255,255,255,.05);
  border:1px solid var(--line);display:flex;align-items:center;padding:0 12px;
  font-size:14px;color:#8f9bc0;
}
.gl-input i{margin-right:8px;color:var(--muted);}
.glass-login .btn-main{width:100%;height:44px;margin-top:4px;}
.gl-foot{font-size:12.5px;color:var(--muted);margin-top:12px;text-align:center;}

/* 痛点条带 */
.pain-list{border-top:1px solid var(--line-soft);}
.pain-row{
  display:grid;grid-template-columns:88px 1fr;gap:28px;align-items:start;
  padding:30px 0;border-bottom:1px solid var(--line-soft);
  transition:background .25s ease,padding-left .25s ease;
}
.pain-row:hover{background:linear-gradient(90deg,rgba(53,224,216,.05),transparent 70%);padding-left:14px;}
.pain-num{font-size:32px;font-weight:700;color:rgba(255,196,107,.75);line-height:1.1;}
.pain-row h3{font-size:19px;margin-bottom:8px;}
.pain-row p{color:var(--muted);margin:0;font-size:15.5px;}

/* 方案交错 */
.solution{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.solution + .solution{margin-top:88px;}
.solution-media{position:relative;}
.solution-media img{border-radius:var(--r-card);border:1px solid var(--line);box-shadow:var(--shadow);aspect-ratio:16/11;object-fit:cover;width:100%;}
.float-layer{
  position:absolute;right:-18px;bottom:20px;
  background:rgba(12,18,45,.9);border:1px solid rgba(53,224,216,.3);
  backdrop-filter:blur(12px);border-radius:16px;padding:14px 18px;box-shadow:var(--shadow-sm);
}
.float-layer span{display:block;font-size:12.5px;color:var(--muted);}
.float-layer strong{font-size:20px;color:var(--cyan);}
.solution h3{font-size:24px;margin-bottom:14px;}
.check-list{list-style:none;padding:0;margin:20px 0 26px;}
.check-list li{display:flex;gap:12px;align-items:flex-start;margin-bottom:14px;color:#cdd6f0;font-size:15.5px;}
.check-list i{
  width:22px;height:22px;border-radius:50%;flex-shrink:0;margin-top:5px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(53,224,216,.45);color:var(--cyan);font-size:11px;
}

/* 数据带 */
.stat-band{
  background:linear-gradient(120deg,rgba(58,107,255,.14),rgba(53,224,216,.07));
  border:1px solid var(--line);border-radius:22px;padding:38px 30px;
  display:grid;grid-template-columns:repeat(4,1fr);
  box-shadow:var(--shadow-sm);
}
.stat-item{padding:0 24px;border-right:1px solid rgba(255,255,255,.1);}
.stat-item:last-child{border-right:none;}
.stat-item strong{display:block;font-size:30px;color:var(--cyan);line-height:1.2;}
.stat-item span{font-size:13.5px;color:var(--muted);}
.stat-note{margin-top:26px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.stat-note p{margin:0;color:var(--muted);font-size:15px;}

/* 证言 */
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
.quote-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--shadow-sm);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.quote-card:hover{transform:translateY(-4px);border-color:rgba(53,224,216,.4);box-shadow:var(--shadow);}
.quote-card:nth-child(2){margin-top:34px;}
.quote-card:nth-child(3){margin-top:12px;}
.quote-mark{font-size:40px;line-height:1;color:rgba(255,196,107,.7);margin-bottom:10px;font-family:Georgia,serif;}
.quote-card p{font-size:15.5px;color:#d5dcf2;margin-bottom:20px;}
.quote-user{display:flex;align-items:center;gap:12px;border-top:1px solid var(--line-soft);padding-top:16px;}
.avatar{
  width:42px;height:42px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(135deg,rgba(58,107,255,.85),rgba(53,224,216,.75));
  display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;color:#08122e;
}
.quote-user b{display:block;font-size:14.5px;color:#fff;font-weight:600;}
.quote-user span{font-size:12.5px;color:var(--muted);}
.stars{margin-left:auto;color:var(--gold);font-size:12px;letter-spacing:1px;}

/* 资讯卡 */
.filter-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:32px;}
.filter-row span{
  font-size:13.5px;color:var(--muted);padding:6px 16px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
}
.filter-row span.on{color:#fff;border-color:rgba(53,224,216,.45);background:rgba(53,224,216,.1);}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;position:relative;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.news-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.5),transparent);
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(53,224,216,.4);box-shadow:var(--shadow);}
.news-cover{aspect-ratio:16/10;overflow:hidden;border-radius:14px 14px 0 0;background:var(--panel-2);}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.news-card:hover .news-cover img{transform:scale(1.04);}
.news-body{padding:22px;display:flex;flex-direction:column;flex:1;}
.news-badge{
  display:inline-block;font-size:12px;color:var(--cyan);border:1px solid rgba(53,224,216,.3);
  background:rgba(53,224,216,.08);border-radius:var(--r-pill);padding:2px 10px;margin-bottom:12px;align-self:flex-start;
}
.news-body h3{font-size:17.5px;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card:hover h3{color:var(--cyan);}
.news-body p{
  color:var(--muted);font-size:14.5px;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  border-top:1px solid var(--line-soft);padding-top:14px;font-size:13px;color:var(--muted);
}
.news-foot i{color:var(--cyan);}
.empty-state{
  grid-column:1/-1;text-align:center;padding:56px 20px;
  border:1px dashed var(--line);border-radius:var(--r-card);color:var(--muted);
}
.empty-state i{font-size:30px;color:rgba(53,224,216,.6);display:block;margin-bottom:14px;}

/* FAQ */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{
  background:var(--glass);border:1px solid var(--line);border-radius:16px;
  margin-bottom:14px;overflow:hidden;position:relative;transition:border-color .22s ease;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;
  background:linear-gradient(180deg,var(--cyan),var(--primary));
  opacity:0;transition:opacity .25s ease;box-shadow:0 0 14px rgba(53,224,216,.7);
}
.faq-item.open::before{opacity:1;}
.faq-item.open{border-color:rgba(53,224,216,.35);}
.faq-q{
  width:100%;background:none;border:none;color:#fff;text-align:left;
  padding:20px 60px 20px 24px;font-size:16.5px;font-weight:600;cursor:pointer;position:relative;
}
.faq-q i{
  position:absolute;right:24px;top:50%;transform:translateY(-50%);
  color:var(--cyan);font-size:14px;transition:transform .25s ease;
}
.faq-item.open .faq-q i{transform:translateY(-50%) rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{margin:0;padding:0 24px 22px;color:var(--muted);font-size:15.5px;}

/* CTA */
.cta-band{
  background:linear-gradient(115deg,rgba(58,107,255,.2),rgba(53,224,216,.1));
  border:1px solid var(--line);border-radius:24px;padding:44px 42px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  box-shadow:var(--shadow);
}
.cta-band h2{font-size:26px;margin-bottom:8px;}
.cta-band p{margin:0;color:var(--muted);font-size:15.5px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* 页脚 */
.site-footer{
  background:#05081a;border-top:1px solid var(--line-soft);
  padding:72px 0 28px;margin-top:40px;position:relative;z-index:2;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;}
.footer-brand p{color:var(--muted);font-size:14.5px;margin:16px 0 0;max-width:300px;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:18px;}
.footer-col a,.footer-col li{display:block;color:var(--muted);font-size:14.5px;margin-bottom:12px;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col a:hover{color:var(--cyan);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line-soft);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:var(--muted);
}

@media (max-width:1199px){
  .hero h1{font-size:38px;}
  .container{padding-left:20px;padding-right:20px;}
}
@media (max-width:991px){
  .nav-links{display:none;}
  .nav-actions .btn-ghost{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-shell{padding:10px 12px;}
  .hero{padding:132px 0 76px;}
  .hero-grid{grid-template-columns:1fr;gap:52px;}
  .glass-login{position:static;width:100%;margin-top:22px;}
  .solution{grid-template-columns:1fr;gap:30px;}
  .solution + .solution{margin-top:64px;}
  .solution.rev .solution-media{order:-1;}
  .stat-band{grid-template-columns:repeat(2,1fr);gap:26px 0;}
  .stat-item:nth-child(2){border-right:none;}
  .stat-item{border-bottom:1px solid rgba(255,255,255,.1);padding-bottom:18px;}
  .stat-item:nth-child(3),.stat-item:nth-child(4){border-bottom:none;padding-bottom:0;}
  .quote-grid{grid-template-columns:1fr 1fr;}
  .quote-card:nth-child(3){margin-top:0;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:76px 0;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .hero h1{font-size:30px;}
  .sec-title{font-size:23px;}
  .pain-row{grid-template-columns:56px 1fr;gap:16px;padding:24px 0;}
  .pain-num{font-size:24px;}
  .quote-grid{grid-template-columns:1fr;}
  .quote-card:nth-child(2){margin-top:0;}
  .news-grid{grid-template-columns:1fr;}
  .stat-band{grid-template-columns:1fr;}
  .stat-item{border-right:none;padding:0 0 18px;}
  .stat-item:nth-child(3){border-bottom:1px solid rgba(255,255,255,.1);}
  .cta-band{padding:30px 22px;}
  .cta-band h2{font-size:21px;}
  .footer-grid{grid-template-columns:1fr;}
  .brand-text{font-size:14px;}
  .glass-login{padding:18px;}
}
@media (max-width:519px){
  .hero-btns{flex-direction:column;}
  .hero-btns .btn-main,.hero-btns .btn-ghost{width:100%;}
  .cta-actions{width:100%;}
  .cta-actions .btn-main,.cta-actions .btn-ghost{width:100%;}
  .mobile-panel .m-actions{grid-template-columns:1fr;}
}

/* roulang page: article */
:root{
  --bg:#070B1E;
  --panel:#0E1533;
  --glass:rgba(255,255,255,.045);
  --ring:#3A6BFF;
  --aurora:#35E0D8;
  --gold:#FFC46B;
  --text:#E8ECF8;
  --muted:#A6B0CC;
  --line:rgba(255,255,255,.10);
  --radius-lg:18px;
  --radius-md:12px;
  --radius-pill:999px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --shadow-hi:0 28px 56px rgba(0,0,0,.55);
  --inset:inset 0 1px 0 rgba(255,255,255,.08);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background-color:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",Inter,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:0;
  background-image:
    radial-gradient(1000px 560px at 10% -8%, rgba(58,107,255,.20), transparent 62%),
    radial-gradient(860px 500px at 92% 0%, rgba(53,224,216,.11), transparent 60%),
    radial-gradient(rgba(255,255,255,.045) 1px, transparent 1px);
  background-size:auto,auto,26px 26px;
  background-repeat:no-repeat,no-repeat,repeat;
  background-attachment:fixed,fixed,fixed;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
::selection{background:rgba(53,224,216,.32);color:#04102A;}
:focus-visible{outline:2px solid var(--aurora);outline-offset:2px;border-radius:8px;}

.container{
  width:100%;
  max-width:1248px!important;
  padding-left:24px!important;
  padding-right:24px!important;
  margin:0 auto;
}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{position:fixed;top:16px;left:0;right:0;z-index:1030;}
.nav-shell{
  display:flex;align-items:center;gap:20px;
  padding:11px 16px 11px 20px;
  border-radius:var(--radius-pill);
  background:rgba(10,14,34,.66);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.08);
  box-shadow:0 20px 44px rgba(0,0,0,.5), var(--inset);
  transition:background .25s var(--ease), box-shadow .25s var(--ease);
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  position:relative;width:30px;height:30px;border-radius:50%;flex:0 0 30px;
  background:radial-gradient(circle at 32% 30%, #A8DCFF, var(--ring) 48%, #101A44 100%);
  box-shadow:0 0 18px rgba(58,107,255,.55);
}
.brand-mark::after{
  content:"";position:absolute;inset:-5px;border-radius:50%;
  border:1px solid rgba(53,224,216,.55);border-top-color:transparent;border-right-color:transparent;
  transform:rotate(-28deg);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;font-size:15px;font-weight:700;color:#fff;letter-spacing:0;}
.brand-text small{font-size:10.5px;font-weight:500;color:var(--muted);letter-spacing:.06em;margin-top:2px;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-links a{
  display:inline-block;padding:9px 13px;border-radius:var(--radius-pill);
  font-size:14.5px;color:var(--muted);white-space:nowrap;
  transition:color .2s var(--ease), background .2s var(--ease), box-shadow .2s var(--ease), transform .2s var(--ease);
}
.nav-links a:hover{color:#fff;background:rgba(58,107,255,.16);transform:translateY(-1px);}
.nav-links a.active{
  color:#fff;background:rgba(58,107,255,.20);
  box-shadow:inset 0 0 0 1px rgba(53,224,216,.38), 0 0 18px rgba(53,224,216,.20);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 22px;border-radius:var(--radius-md);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease), box-shadow .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease), color .22s var(--ease);
}
.btn-primary{
  background:linear-gradient(120deg,var(--aurora),var(--ring));
  color:#04102A;
  box-shadow:0 0 22px rgba(53,224,216,.28), var(--shadow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 32px rgba(53,224,216,.44), var(--shadow-hi);color:#04102A;}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:var(--glass);color:var(--text);border-color:rgba(255,255,255,.14);
}
.btn-ghost:hover{background:rgba(255,255,255,.09);border-color:rgba(53,224,216,.42);color:#fff;transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{min-height:38px;padding:8px 16px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}

.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;align-items:center;justify-content:center;
  border-radius:14px;background:rgba(255,255,255,.06);border:1px solid var(--line);color:#fff;
}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;border-radius:2px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-mobile{
  margin-top:10px;padding:14px;border-radius:22px;
  background:rgba(10,14,34,.92);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid var(--line);
  box-shadow:0 20px 44px rgba(0,0,0,.5), var(--inset);
}
.nav-mobile a{display:block;padding:12px 14px;border-radius:14px;color:var(--muted);font-size:15px;}
.nav-mobile a.active{color:#fff;background:rgba(58,107,255,.20);box-shadow:inset 0 0 0 1px rgba(53,224,216,.35);}
.nav-mobile a:hover{color:#fff;background:rgba(255,255,255,.06);}

main{padding-top:132px;}

/* ---------- 文章头部 ---------- */
.article-head{padding:18px 0 30px;}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13.5px;color:var(--muted);position:relative;padding-left:34px;
}
.crumbs::before{
  content:"";position:absolute;left:0;top:50%;width:22px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,224,216,.85));
}
.crumbs a{color:var(--muted);transition:color .2s;}
.crumbs a:hover{color:var(--aurora);}
.crumbs .sep{color:rgba(255,255,255,.22);}
.crumbs .current{color:var(--muted);}
.article-head h1{
  font-size:42px;line-height:1.28;font-weight:700;color:#fff;
  margin:18px 0 16px;max-width:920px;letter-spacing:0;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px;font-size:13.5px;color:var(--muted);}
.meta-item{display:inline-flex;align-items:center;gap:6px;}
.meta-item i{font-style:normal;color:rgba(255,255,255,.42);}
.badge-cat{
  display:inline-flex;align-items:center;padding:5px 13px;border-radius:var(--radius-pill);
  font-size:12.5px;color:var(--aurora);
  background:rgba(53,224,216,.10);border:1px solid rgba(53,224,216,.32);
}
.rail-divider{height:1px;margin-top:26px;background:linear-gradient(90deg,transparent,rgba(53,224,216,.45) 22%,rgba(58,107,255,.35) 78%,transparent);}

/* ---------- 正文与侧栏 ---------- */
.article-grid{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;
  gap:56px;align-items:start;padding:44px 0 8px;
}
.prose{font-size:16.5px;line-height:1.9;color:var(--text);min-width:0;overflow-wrap:break-word;}
.prose > *:first-child{margin-top:0;}
.prose p{margin:0 0 1.2em;color:var(--text);}
.prose h2{
  position:relative;font-size:28px;line-height:1.35;color:#fff;
  margin:46px 0 16px;padding-left:16px;scroll-margin-top:130px;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--aurora),var(--ring));
  box-shadow:0 0 16px rgba(53,224,216,.55);
}
.prose h3{font-size:20px;line-height:1.5;color:#fff;margin:32px 0 12px;scroll-margin-top:130px;}
.prose h4{font-size:17px;color:#fff;margin:24px 0 10px;}
.prose ul,.prose ol{margin:0 0 1.3em;padding-left:0;list-style:none;}
.prose ul li,.prose ol li{position:relative;padding-left:24px;margin-bottom:.55em;}
.prose ul li::before{
  content:"";position:absolute;left:4px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--aurora);box-shadow:0 0 10px rgba(53,224,216,.65);
}
.prose ol{counter-reset:item;}
.prose ol li{counter-increment:item;}
.prose ol li::before{
  content:counter(item)".";
  position:absolute;left:0;top:0;width:18px;text-align:right;
  color:var(--gold);font-size:14px;font-variant-numeric:tabular-nums;
}
.prose blockquote{
  margin:26px 0;padding:18px 22px;color:#D7DEF7;
  background:var(--glass);border-left:3px solid var(--aurora);
  border-radius:0 14px 14px 0;
}
.prose blockquote p:last-child{margin-bottom:0;}
.prose img{border-radius:14px;border:1px solid var(--line);margin:24px 0;}
.prose figure{margin:24px 0;}
.prose figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}
.prose a{color:var(--aurora);border-bottom:1px dashed rgba(53,224,216,.5);transition:color .2s,border-color .2s;}
.prose a:hover{color:#fff;border-bottom-color:#fff;}
.prose table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;}
.prose thead th{
  background:rgba(58,107,255,.20);color:#fff;text-align:left;
  padding:12px 14px;border-bottom:1px solid var(--line);font-weight:600;
}
.prose tbody td{padding:12px 14px;border-bottom:1px solid var(--line);color:var(--muted);}
.prose tbody tr:nth-child(even){background:rgba(255,255,255,.028);}
.prose code{
  background:rgba(255,196,107,.12);color:var(--gold);
  padding:2px 7px;border-radius:7px;font-size:14px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.prose pre{
  background:rgba(6,10,28,.92);border:1px solid var(--line);border-radius:14px;
  padding:18px 20px;overflow:auto;margin:24px 0;
}
.prose pre code{background:none;color:#CFE3FF;padding:0;}
.prose hr{border:0;height:1px;margin:34px 0;background:linear-gradient(90deg,transparent,rgba(53,224,216,.4),transparent);}

.empty-state{
  text-align:center;padding:72px 26px;border-radius:var(--radius-lg);
  border:1px dashed rgba(255,255,255,.16);background:rgba(255,255,255,.03);
}
.empty-state p{color:var(--muted);font-size:16px;margin:0 0 20px;}

.side-col{position:sticky;top:120px;display:flex;flex-direction:column;gap:20px;min-width:0;}
.side-card{
  padding:22px;border-radius:var(--radius-lg);
  background:linear-gradient(180deg,rgba(255,255,255,.065),rgba(255,255,255,.02));
  border:1px solid var(--line);
  box-shadow:var(--shadow), var(--inset);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
}
.side-card h3{
  position:relative;font-size:15px;color:#fff;margin:0 0 14px;padding-left:12px;
}
.side-card h3::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:2px;border-radius:2px;
  background:var(--aurora);box-shadow:0 0 10px rgba(53,224,216,.7);
}
.side-card p{font-size:14px;color:var(--muted);line-height:1.8;margin:0 0 16px;}
.toc-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px;max-height:340px;overflow:auto;}
.toc-list li{margin:0;}
.toc-list a{
  display:block;padding:7px 10px;border-radius:10px;font-size:14px;color:var(--muted);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.toc-list a:hover{color:#fff;background:rgba(58,107,255,.16);}
.toc-list a.active{color:var(--aurora);background:rgba(53,224,216,.12);}
.toc-list .toc-h3 a{padding-left:24px;font-size:13.5px;}
.toc-empty{font-size:13.5px;color:rgba(255,255,255,.35);padding:6px 10px;}

/* ---------- 文末 ---------- */
.article-foot{margin-top:54px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;padding:7px 14px;border-radius:var(--radius-pill);
  font-size:13.5px;color:var(--muted);background:rgba(255,255,255,.05);
  border:1px solid var(--line);transition:color .2s,border-color .2s,background .2s;
}
.tag:hover{color:var(--aurora);border-color:rgba(53,224,216,.45);background:rgba(53,224,216,.08);}
.foot-links{display:flex;flex-wrap:wrap;gap:20px;justify-content:space-between;margin-top:22px;font-size:14.5px;}
.foot-links a{color:var(--muted);transition:color .2s;}
.foot-links a:hover{color:var(--aurora);}

.related{margin-top:70px;}
.related .sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.related h2{font-size:27px;color:#fff;margin:0 0 8px;}
.related .sec-head p{margin:0;font-size:14.5px;color:var(--muted);}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin-top:26px;}
.post-card{
  display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--radius-lg);border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  box-shadow:var(--shadow), var(--inset);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.post-card:hover{transform:translateY(-4px);border-color:rgba(53,224,216,.42);box-shadow:var(--shadow-hi), var(--inset);}
.post-card .thumb{aspect-ratio:16/10;overflow:hidden;border-radius:14px 14px 0 0;}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease);}
.post-card:hover .thumb img{transform:scale(1.05);}
.post-card .body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-card .cat{font-size:12.5px;color:var(--aurora);}
.post-card h3{
  font-size:17px;line-height:1.5;color:#fff;margin:0;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s;
}
.post-card:hover h3{color:var(--aurora);}
.post-card p{
  font-size:14px;color:var(--muted);line-height:1.75;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card .foot{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.post-card .foot span:last-child{color:var(--aurora);}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:84px;padding:34px;border-radius:22px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  background:linear-gradient(120deg,rgba(58,107,255,.20),rgba(53,224,216,.09));
  border:1px solid rgba(53,224,216,.24);
  box-shadow:var(--shadow), var(--inset);
}
.cta-band h2{font-size:24px;color:#fff;margin:0 0 8px;}
.cta-band p{margin:0;font-size:14.5px;color:var(--muted);max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;padding:64px 0 28px;
  background:rgba(5,8,22,.94);
  border-top:1px solid var(--line);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand p{color:var(--muted);font-size:14px;line-height:1.8;margin:16px 0 0;max-width:300px;}
.footer-col h4{font-size:15px;color:#fff;margin:0 0 16px;font-weight:600;}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}
.footer-col li{color:var(--muted);font-size:14px;line-height:1.7;}
.footer-col a{color:var(--muted);font-size:14px;transition:color .2s;}
.footer-col a:hover{color:var(--aurora);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.42);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .article-head h1{font-size:38px;}
  .article-grid{gap:40px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-actions{margin-left:auto;}
  .article-grid{grid-template-columns:minmax(0,1fr);gap:30px;}
  .side-col{position:static;order:-1;}
  .toc-list{max-height:none;}
  .related h2{font-size:24px;}
}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band{padding:28px;}
}
@media (max-width:767px){
  .container{padding-left:16px!important;padding-right:16px!important;}
  main{padding-top:114px;}
  .site-header{top:10px;}
  .nav-shell{padding:9px 12px;gap:10px;}
  .brand-text{font-size:14px;}
  .brand-text small{display:none;}
  .nav-actions .btn-ghost{display:none;}
  .article-head h1{font-size:28px;line-height:1.34;}
  .prose{font-size:16px;line-height:1.88;}
  .prose h2{font-size:22px;margin:36px 0 14px;}
  .prose h3{font-size:18px;}
  .card-grid{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;gap:18px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:520px){
  .brand-text{font-size:13px;}
  .nav-actions .btn-primary{padding:10px 14px;font-size:14px;min-height:40px;}
  .article-head{padding-top:8px;}
  .side-card{padding:18px;}
  .post-card .body{padding:16px 18px 18px;}
}

/* roulang page: category1 */
:root{
  --bg:#070B1E;
  --panel:#0E1533;
  --glass:rgba(255,255,255,0.045);
  --glass-strong:rgba(255,255,255,0.07);
  --blue:#3A6BFF;
  --cyan:#35E0D8;
  --gold:#FFC46B;
  --text:#E8ECF8;
  --muted:#A6B0CC;
  --line:rgba(255,255,255,0.10);
  --line-strong:rgba(255,255,255,0.18);
  --radius:18px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow-card:0 18px 40px rgba(0,0,0,0.45), inset 0 1px 0 rgba(255,255,255,0.08);
  --shadow-soft:0 10px 26px rgba(0,0,0,0.35), inset 0 1px 0 rgba(255,255,255,0.06);
  --glow-cyan:0 10px 28px rgba(53,224,216,0.28);
  --font-base:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","SFMono-Regular",Consolas,"PingFang SC",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-base);
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:0;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background-image:
    radial-gradient(1.5px 1.5px at 18% 22%, rgba(255,255,255,0.42) 50%, transparent 51%),
    radial-gradient(1.2px 1.2px at 72% 12%, rgba(255,255,255,0.30) 50%, transparent 51%),
    radial-gradient(1.6px 1.6px at 44% 64%, rgba(53,224,216,0.36) 50%, transparent 51%),
    radial-gradient(1.2px 1.2px at 86% 78%, rgba(255,255,255,0.24) 50%, transparent 51%),
    radial-gradient(1.4px 1.4px at 10% 88%, rgba(58,107,255,0.34) 50%, transparent 51%);
  background-size:460px 460px, 620px 620px, 720px 720px, 540px 540px, 660px 660px;
  opacity:0.55;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--cyan);text-decoration:none;}
a:hover{color:#7ff3ec;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0;line-height:1.35;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
::selection{background:rgba(53,224,216,0.3);color:#fff;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}
.container{
  width:100%;
  max-width:1200px;
  padding-left:24px;
  padding-right:24px;
  margin-left:auto;
  margin-right:auto;
}
/* ============ 悬浮胶囊导航 ============ */
.site-header{
  position:fixed;
  top:18px;
  left:0;
  right:0;
  z-index:60;
  transition:top .25s ease;
}
.nav-shell{
  position:relative;
  display:flex;
  align-items:center;
  gap:16px;
  padding:10px 12px 10px 20px;
  border-radius:var(--radius-pill);
  background:rgba(14,21,51,0.62);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,0.08);
  box-shadow:0 14px 34px rgba(0,0,0,0.35), inset 0 1px 0 rgba(255,255,255,0.07);
  transition:background-color .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.site-header.is-scrolled .nav-shell{
  background:rgba(9,14,36,0.9);
  border-color:rgba(255,255,255,0.12);
  box-shadow:0 20px 44px rgba(0,0,0,0.55), inset 0 1px 0 rgba(255,255,255,0.08);
}
.brand{
  display:flex;
  align-items:center;
  gap:11px;
  text-decoration:none;
  flex-shrink:0;
}
.brand-mark{
  position:relative;
  width:30px;
  height:30px;
  border-radius:50%;
  background:radial-gradient(circle at 32% 28%, #ffffff 0%, #35E0D8 38%, #3A6BFF 78%);
  box-shadow:0 0 18px rgba(53,224,216,0.45);
  flex-shrink:0;
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:-6px;
  border-radius:50%;
  border:1px solid rgba(53,224,216,0.55);
  transform:rotate(-20deg) scaleY(0.45);
}
.brand-text{
  display:flex;
  flex-direction:column;
  line-height:1.18;
  font-size:15.5px;
  font-weight:700;
  color:#fff;
  white-space:nowrap;
}
.brand-text small{
  font-size:11.5px;
  font-weight:500;
  color:var(--muted);
  letter-spacing:0.06em;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-links a{
  position:relative;
  display:inline-flex;
  align-items:center;
  padding:9px 14px;
  border-radius:var(--radius-pill);
  color:var(--muted);
  font-size:15px;
  text-decoration:none;
  white-space:nowrap;
  transition:color .2s ease, background-color .2s ease, transform .2s ease;
}
.nav-links a:hover{
  color:#fff;
  background:rgba(255,255,255,0.06);
  transform:translateY(-1px);
}
.nav-links a.active{
  color:#fff;
  background:rgba(53,224,216,0.10);
  box-shadow:inset 0 0 0 1px rgba(53,224,216,0.35);
}
.nav-links a.active::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:2px;
  transform:translateX(-50%);
  width:18px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--blue));
  box-shadow:0 0 10px rgba(53,224,216,0.75);
}
.nav-actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  align-items:center;
  justify-content:center;
  border-radius:var(--radius-pill);
  background:rgba(255,255,255,0.05);
  border:1px solid var(--line);
  color:var(--text);
  font-size:17px;
  cursor:pointer;
  transition:background-color .2s ease, border-color .2s ease;
}
.nav-toggle:hover{background:rgba(255,255,255,0.1);border-color:var(--line-strong);}
/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:11px 22px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  text-decoration:none;
  cursor:pointer;
  border:1px solid transparent;
  transition:transform .2s ease, box-shadow .2s ease, background-color .2s ease, border-color .2s ease, color .2s ease;
}
.btn-primary{
  background:linear-gradient(120deg,var(--cyan) 0%,var(--blue) 100%);
  color:#04101F;
  box-shadow:var(--glow-cyan);
}
.btn-primary:hover{
  color:#04101F;
  transform:translateY(-2px);
  box-shadow:0 16px 38px rgba(53,224,216,0.42);
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 8px 20px rgba(53,224,216,0.3);}
.btn-ghost{
  background:rgba(255,255,255,0.05);
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-ghost:hover{
  background:rgba(255,255,255,0.1);
  border-color:rgba(53,224,216,0.55);
  color:#fff;
  transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{min-height:40px;padding:9px 18px;font-size:14.5px;}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:4px 0;
  color:var(--cyan);
  font-size:14.5px;
  font-weight:600;
  border:0;
  background:transparent;
  cursor:pointer;
  transition:color .2s ease, gap .2s ease;
}
.btn-text:hover{color:#8ff5f0;gap:11px;}
.btn-text i{font-size:12px;transition:transform .2s ease;}
.btn-text:hover i{transform:translateX(3px);}
/* ============ 标签 / 徽章 ============ */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:7px 15px;
  border-radius:var(--radius-pill);
  background:rgba(255,255,255,0.05);
  border:1px solid var(--line);
  color:var(--muted);
  font-size:13.5px;
  line-height:1.4;
}
.tag i{color:var(--cyan);font-size:12px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:6px 15px;
  border-radius:var(--radius-pill);
  background:rgba(53,224,216,0.09);
  border:1px solid rgba(53,224,216,0.28);
  color:var(--cyan);
  font-size:13px;
  letter-spacing:0.04em;
}
.badge-cat{
  display:inline-flex;
  align-items:center;
  padding:4px 11px;
  border-radius:var(--radius-pill);
  background:rgba(58,107,255,0.16);
  border:1px solid rgba(58,107,255,0.3);
  color:#B9CBFF;
  font-size:12.5px;
  line-height:1.5;
}
/* ============ Hero ============ */
.hero{
  position:relative;
  padding:158px 0 78px;
  overflow:hidden;
}
.hero-bg{
  position:absolute;
  inset:0;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;
  background-position:center;
  opacity:0.30;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,0.95) 0%,rgba(0,0,0,0.35) 62%,transparent 100%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,0.95) 0%,rgba(0,0,0,0.35) 62%,transparent 100%);
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,11,30,0.55) 0%,rgba(7,11,30,0.86) 58%,var(--bg) 100%);
}
.hero .container{position:relative;z-index:2;}
.breadcrumb-bar{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  font-size:13.5px;
  color:var(--muted);
  margin-bottom:26px;
}
.breadcrumb-bar .track{
  display:inline-block;
  width:44px;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,224,216,0.7),transparent);
}
.breadcrumb-bar .sep{color:rgba(255,255,255,0.28);}
.breadcrumb-bar a{color:var(--muted);text-decoration:none;transition:color .2s ease;}
.breadcrumb-bar a:hover{color:var(--cyan);}
.breadcrumb-bar .current{color:#8C97B8;}
.hero-inner{max-width:820px;}
.hero h1{
  font-size:44px;
  line-height:1.25;
  margin:22px 0 20px;
  color:#fff;
}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(100deg,var(--cyan),#8FB4FF);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  font-size:17px;
  color:var(--muted);
  line-height:1.9;
  max-width:720px;
}
.hero .tag-row{margin-top:24px;}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:34px;
}
/* ============ 板块通用 ============ */
.section{
  position:relative;
  padding:96px 0;
}
.section-line::before{
  content:"";
  position:absolute;
  top:0;
  left:50%;
  transform:translateX(-50%);
  width:min(1200px,92%);
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,224,216,0.30),transparent);
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
  margin-bottom:44px;
}
.section-head h2{
  font-size:30px;
  color:#fff;
  line-height:1.4;
}
.section-head .lead{
  color:var(--muted);
  font-size:15.5px;
  max-width:640px;
  margin-top:12px;
}
/* ============ 目录 + 条目流 ============ */
.entry-layout{
  display:grid;
  grid-template-columns:264px minmax(0,1fr);
  gap:36px;
  align-items:start;
}
.toc-card{
  position:sticky;
  top:112px;
  padding:24px 22px;
  border-radius:var(--radius);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow-soft);
  overflow:hidden;
}
.toc-card::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,0.35),transparent);
}
.toc-title{
  font-size:13px;
  color:var(--muted);
  letter-spacing:0.08em;
  margin-bottom:16px;
}
.toc-card ul li{margin-bottom:4px;}
.toc-card ul a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 12px;
  border-radius:var(--radius-sm);
  color:var(--muted);
  font-size:14.5px;
  text-decoration:none;
  transition:color .2s ease, background-color .2s ease;
}
.toc-card ul a span.num{
  font-family:var(--font-num);
  font-size:12px;
  color:var(--gold);
  opacity:0.85;
}
.toc-card ul a:hover{
  color:#fff;
  background:rgba(255,255,255,0.06);
}
.toc-note{
  margin-top:18px;
  padding-top:18px;
  border-top:1px solid var(--line);
  color:var(--muted);
  font-size:13px;
  line-height:1.8;
}
.entry-stream{
  border-radius:var(--radius);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow-card);
  padding:8px 28px;
  overflow:hidden;
}
.entry-item{
  position:relative;
  display:grid;
  grid-template-columns:76px minmax(0,1fr);
  gap:22px;
  padding:32px 0;
  transition:transform .24s ease;
}
.entry-item + .entry-item{
  border-top:1px solid;
  border-image:linear-gradient(90deg,transparent,rgba(255,255,255,0.16),transparent) 1;
}
.entry-item:hover{transform:translateX(4px);}
.entry-index{
  font-family:var(--font-num);
  font-size:34px;
  font-weight:600;
  line-height:1;
  color:rgba(53,224,216,0.85);
  padding-top:4px;
}
.entry-item:nth-child(3n+2) .entry-index{color:rgba(255,196,107,0.85);}
.entry-body h3{
  font-size:20px;
  color:#fff;
  margin-bottom:10px;
}
.entry-body p{
  color:var(--muted);
  font-size:15.5px;
  line-height:1.85;
  margin-bottom:14px;
}
.entry-meta{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-bottom:14px;
}
/* ============ 参数对比 ============ */
.compare{
  border-radius:var(--radius);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.compare-scroll{overflow-x:auto;}
.compare-grid{min-width:760px;}
.compare-row{
  display:grid;
  grid-template-columns:1.2fr 1fr 1fr 1.25fr;
  align-items:center;
  gap:16px;
  padding:20px 28px;
}
.compare-row + .compare-row{
  border-top:1px solid;
  border-image:linear-gradient(90deg,transparent,rgba(255,255,255,0.14),transparent) 1;
}
.compare-row.is-head{
  background:rgba(255,255,255,0.035);
  border-image:none;
  border-bottom:1px solid rgba(255,255,255,0.1);
}
.compare-row.is-head span{
  font-size:14px;
  font-weight:700;
  color:#fff;
}
.compare-row.is-head span:first-child{
  color:var(--muted);
  font-weight:500;
}
.compare-row .key{
  font-size:15px;
  color:#D6DDF5;
  font-weight:600;
}
.compare-row .val{
  font-size:14.8px;
  color:var(--muted);
  line-height:1.7;
}
.compare-row .val em{
  font-style:normal;
  color:var(--cyan);
  font-family:var(--font-num);
}
/* ============ 图文清单 ============ */
.split{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);
  gap:48px;
  align-items:center;
}
.split-media{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.split-media img{
  width:100%;
  aspect-ratio:16 / 11;
  object-fit:cover;
}
.split-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(7,11,30,0.75) 100%);
}
.split-float{
  position:absolute;
  left:22px;
  right:22px;
  bottom:22px;
  z-index:2;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.split-float span{
  padding:6px 13px;
  border-radius:var(--radius-pill);
  background:rgba(9,14,36,0.72);
  border:1px solid rgba(255,255,255,0.14);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  font-size:13px;
  color:#DCE3F7;
}
.check-list{margin-top:26px;}
.check-list li{
  display:flex;
  gap:14px;
  padding:15px 0;
  border-bottom:1px solid rgba(255,255,255,0.07);
}
.check-list li:last-child{border-bottom:0;}
.check-list .ck{
  flex-shrink:0;
  width:26px;
  height:26px;
  margin-top:4px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  border:1px solid rgba(53,224,216,0.5);
  color:var(--cyan);
  font-size:12px;
}
.check-list strong{
  display:block;
  color:#fff;
  font-size:16px;
  font-weight:600;
  margin-bottom:3px;
}
.check-list p{
  color:var(--muted);
  font-size:14.8px;
  line-height:1.8;
}
/* ============ 指标带 ============ */
.metrics-band{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-radius:var(--radius);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.metric{
  padding:34px 26px;
  position:relative;
}
.metric + .metric::before{
  content:"";
  position:absolute;
  left:0;
  top:26px;
  bottom:26px;
  width:1px;
  background:linear-gradient(180deg,transparent,rgba(255,255,255,0.16),transparent);
}
.metric .num{
  font-family:var(--font-num);
  font-size:34px;
  font-weight:600;
  color:var(--cyan);
  line-height:1.1;
}
.metric .num small{font-size:16px;margin-left:3px;}
.metric .cap{
  margin-top:8px;
  font-size:13.8px;
  color:var(--muted);
  line-height:1.7;
}
.band-note{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  margin-top:26px;
  color:var(--muted);
  font-size:15px;
}
/* ============ 评价 ============ */
.quotes{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  align-items:start;
}
.quote-card{
  position:relative;
  padding:28px 26px;
  border-radius:var(--radius);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow-soft);
  transition:transform .24s ease, border-color .24s ease, box-shadow .24s ease;
  overflow:hidden;
}
.quote-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,224,216,0.45),transparent);
}
.quote-card:hover{
  transform:translateY(-4px);
  border-color:rgba(53,224,216,0.4);
  box-shadow:0 22px 48px rgba(0,0,0,0.5), inset 0 1px 0 rgba(255,255,255,0.09);
}
.quote-card:nth-child(2){margin-top:28px;}
.quote-card:nth-child(3){margin-top:12px;}
.quote-card .mark{
  font-family:var(--font-num);
  font-size:40px;
  line-height:1;
  color:rgba(53,224,216,0.35);
}
.quote-card blockquote{
  margin:14px 0 20px;
  font-size:15.5px;
  line-height:1.85;
  color:#D9DFF3;
}
.quote-foot{
  display:flex;
  align-items:center;
  gap:12px;
  padding-top:16px;
  border-top:1px solid var(--line);
}
.avatar{
  width:40px;
  height:40px;
  border-radius:50%;
  flex-shrink:0;
  background:linear-gradient(135deg,var(--blue),var(--cyan));
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:14px;
  font-weight:700;
  color:#04101F;
}
.quote-foot .who strong{
  display:block;
  font-size:14.5px;
  color:#fff;
  font-weight:600;
}
.quote-foot .who span{
  font-size:13px;
  color:var(--muted);
}
.stars{margin-left:auto;color:var(--gold);font-size:12px;letter-spacing:1px;}
/* ============ FAQ ============ */
.faq{max-width:920px;margin:0 auto;}
.faq .accordion-item{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:16px;
  margin-bottom:14px;
  overflow:hidden;
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  box-shadow:var(--shadow-soft);
}
.faq .accordion-item:last-child{margin-bottom:0;}
.faq .accordion-button{
  position:relative;
  background:transparent;
  color:var(--text);
  font-size:16.5px;
  font-weight:600;
  line-height:1.6;
  padding:20px 22px 20px 26px;
  border:0;
  box-shadow:none;
  display:flex;
  align-items:center;
  gap:16px;
  transition:color .2s ease, background-color .2s ease;
}
.faq .accordion-button:not(.collapsed){
  color:#fff;
  background:rgba(53,224,216,0.06);
  box-shadow:none;
}
.faq .accordion-button:not(.collapsed)::before{
  content:"";
  position:absolute;
  left:0;
  top:14px;
  bottom:14px;
  width:2px;
  border-radius:2px;
  background:var(--cyan);
  box-shadow:0 0 14px rgba(53,224,216,0.85);
}
.faq .accordion-button:focus{box-shadow:0 0 0 2px rgba(53,224,216,0.5);border:0;}
.faq .accordion-button::after{
  content:"+";
  background-image:none !important;
  width:26px;
  height:26px;
  margin-left:auto;
  flex-shrink:0;
  display:flex;
  align-items:center;
  justify-content:center;
  border:1px solid rgba(255,255,255,0.22);
  border-radius:50%;
  color:var(--cyan);
  font-size:16px;
  line-height:1;
  transform:none;
  transition:transform .26s ease, background-color .26s ease, border-color .26s ease;
}
.faq .accordion-button:not(.collapsed)::after{
  content:"−";
  transform:rotate(180deg);
  border-color:rgba(53,224,216,0.6);
  background:rgba(53,224,216,0.14);
}
.faq .accordion-body{
  padding:2px 26px 22px 42px;
  color:var(--muted);
  font-size:15.3px;
  line-height:1.9;
  border:0;
}
/* ============ CTA ============ */
.cta-band{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
  padding:38px 40px;
  border-radius:var(--radius);
  background:linear-gradient(120deg,rgba(58,107,255,0.18),rgba(53,224,216,0.10));
  border:1px solid rgba(53,224,216,0.28);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  top:-60%;
  right:-10%;
  width:340px;
  height:340px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(53,224,216,0.22),transparent 65%);
  pointer-events:none;
}
.cta-band h2{
  font-size:26px;
  color:#fff;
  position:relative;
  z-index:1;
}
.cta-band p{
  color:var(--muted);
  font-size:15px;
  margin-top:8px;
  position:relative;
  z-index:1;
}
.cta-actions{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
  position:relative;
  z-index:1;
}
/* ============ 页脚 ============ */
.site-footer{
  background:#050818;
  border-top:1px solid rgba(255,255,255,0.08);
  padding:66px 0 28px;
  margin-top:16px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.15fr;
  gap:38px;
}
.footer-brand .brand{color:#fff;}
.footer-brand p{
  margin-top:18px;
  color:var(--muted);
  font-size:14.5px;
  line-height:1.85;
  max-width:340px;
}
.footer-col h4{
  font-size:15px;
  color:#fff;
  margin-bottom:18px;
  font-weight:600;
}
.footer-col li{
  color:var(--muted);
  font-size:14.5px;
  margin-bottom:11px;
  line-height:1.7;
}
.footer-col a{
  color:var(--muted);
  text-decoration:none;
  transition:color .2s ease;
}
.footer-col a:hover{color:var(--cyan);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  margin-top:46px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,0.08);
  color:#7C88AB;
  font-size:13.5px;
}
/* ============ 响应式 ============ */
@media (max-width:1199px){
  .hero h1{font-size:38px;}
  .section{padding:82px 0;}
  .entry-layout{grid-template-columns:236px minmax(0,1fr);gap:28px;}
  .split{gap:36px;}
}
@media (max-width:991px){
  body{font-size:16px;}
  .nav-toggle{display:inline-flex;}
  .nav-actions .btn-ghost{display:none;}
  .nav-links{
    position:absolute;
    top:calc(100% + 12px);
    left:0;
    right:0;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:12px;
    margin-left:0;
    border-radius:22px;
    background:rgba(9,14,36,0.96);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    border:1px solid rgba(255,255,255,0.12);
    box-shadow:0 24px 50px rgba(0,0,0,0.6);
    display:none;
  }
  .nav-links.open{display:flex;}
  .nav-links a{padding:13px 16px;font-size:16px;}
  .nav-links a.active::after{display:none;}
  .hero{padding:132px 0 64px;}
  .hero h1{font-size:33px;}
  .section-head h2{font-size:26px;}
  .entry-layout{grid-template-columns:1fr;}
  .toc-card{position:static;top:auto;}
  .toc-card ul{display:flex;flex-wrap:wrap;gap:6px;margin:-6px 0 0;}
  .toc-card ul li{margin-bottom:0;}
  .toc-card ul a{background:rgba(255,255,255,0.05);border:1px solid var(--line);}
  .split{grid-template-columns:1fr;}
  .metrics-band{grid-template-columns:repeat(2,1fr);}
  .metric:nth-child(3)::before,
  .metric:nth-child(2)::before{display:none;}
  .metric:nth-child(3),
  .metric:nth-child(4){border-top:1px solid rgba(255,255,255,0.1);}
  .quotes{grid-template-columns:1fr;}
  .quote-card:nth-child(2),
  .quote-card:nth-child(3){margin-top:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding-left:16px;padding-right:16px;}
  .site-header{top:12px;}
  .nav-shell{padding:9px 10px 9px 16px;gap:10px;}
  .brand-text{font-size:14.5px;}
  .brand-text small{display:none;}
  .hero{padding:120px 0 56px;}
  .hero h1{font-size:29px;}
  .hero-sub{font-size:16px;}
  .section{padding:62px 0;}
  .section-head{margin-bottom:32px;}
  .section-head h2{font-size:23px;}
  .entry-stream{padding:4px 20px;}
  .entry-item{
    grid-template-columns:1fr;
    gap:10px;
    padding:26px 0;
  }
  .entry-index{font-size:26px;padding-top:0;}
  .entry-item:hover{transform:none;}
  .compare-row{grid-template-columns:1fr;gap:6px;padding:18px 20px;}
  .compare-row.is-head{display:none;}
  .compare-grid{min-width:0;}
  .compare-row .key{color:var(--cyan);font-size:13.5px;}
  .metrics-band{grid-template-columns:1fr;}
  .metric+.metric::before{display:none;}
  .metric{border-top:1px solid rgba(255,255,255,0.1);padding:26px 22px;}
  .metric:first-child{border-top:0;}
  .cta-band{padding:28px 22px;}
  .cta-band h2{font-size:21px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .faq .accordion-button{font-size:15.5px;padding:17px 18px 17px 20px;gap:12px;}
  .faq .accordion-body{padding:0 20px 20px 20px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .brand-text{font-size:13.5px;white-space:normal;max-width:150px;}
  .hero h1{font-size:26px;}
  .btn{padding:11px 18px;font-size:14.5px;}
  .hero-actions .btn{width:100%;}
  .toc-card{padding:20px 18px;}
  .quote-card{padding:22px 20px;}
}

/* roulang page: category2 */
:root{
  --bg:#070B1E;
  --panel:#0E1533;
  --panel-deep:#050814;
  --glass:rgba(255,255,255,.045);
  --brand:#3A6BFF;
  --aurora:#35E0D8;
  --gold:#FFC46B;
  --text:#E8ECF8;
  --muted:#A6B0CC;
  --line:rgba(255,255,255,.10);
  --line-soft:rgba(255,255,255,.07);
  --radius-lg:18px;
  --radius-md:12px;
  --shadow-card:0 18px 40px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.08);
  --shadow-deep:0 26px 52px rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.10);
  --container:1200px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background-color:var(--bg);
  background-image:
    radial-gradient(1000px 620px at 12% 6%, rgba(58,107,255,.16), transparent 62%),
    radial-gradient(820px 520px at 88% 12%, rgba(53,224,216,.10), transparent 60%),
    radial-gradient(760px 620px at 62% 92%, rgba(255,196,107,.06), transparent 62%);
  background-attachment:fixed;
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.75) 1px, transparent 1px);
  background-size:190px 190px;
  opacity:.05;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--aurora)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.container{
  max-width:var(--container);
  padding-left:24px;
  padding-right:24px;
  position:relative;
  z-index:1;
}
::selection{background:rgba(53,224,216,.35);color:#04121A}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{
  position:fixed;
  top:14px;
  left:0;
  right:0;
  z-index:1040;
  padding:0 24px;
}
.nav-shell{
  position:relative;
  max-width:var(--container);
  margin:0 auto;
  padding:10px 14px 10px 18px;
  display:flex;
  align-items:center;
  gap:18px;
  border-radius:999px;
  background:rgba(11,17,42,.72);
  border:1px solid rgba(255,255,255,.08);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:background .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.site-header.scrolled .nav-shell{
  background:rgba(8,13,32,.94);
  border-color:rgba(255,255,255,.14);
  box-shadow:0 18px 40px rgba(0,0,0,.5);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:11px;
  flex:0 0 auto;
}
.brand-mark{
  position:relative;
  width:32px;
  height:32px;
  border-radius:50%;
  background:conic-gradient(from 200deg, var(--aurora), var(--brand) 58%, rgba(53,224,216,.05) 82%);
  box-shadow:0 0 18px rgba(53,224,216,.32);
  flex:0 0 32px;
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:9px;
  border-radius:50%;
  background:var(--panel-deep);
}
.brand-text{
  display:flex;
  flex-direction:column;
  font-size:16px;
  font-weight:700;
  line-height:1.2;
  color:var(--text);
  letter-spacing:0;
}
.brand-text small{
  font-size:11.5px;
  font-weight:400;
  color:var(--muted);
  letter-spacing:.5px;
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:16px;
  flex:1;
  justify-content:space-between;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  flex-wrap:nowrap;
}
.nav-links a{
  position:relative;
  padding:8px 14px;
  border-radius:999px;
  font-size:15px;
  color:var(--muted);
  white-space:nowrap;
  transition:color .2s ease, background .2s ease, transform .2s ease, box-shadow .2s ease;
}
.nav-links a:hover{
  color:var(--text);
  background:rgba(255,255,255,.06);
  transform:translateY(-1px);
  box-shadow:0 0 18px rgba(53,224,216,.18);
}
.nav-links a.active{
  color:var(--text);
  background:linear-gradient(120deg, rgba(58,107,255,.30), rgba(53,224,216,.20));
  box-shadow:inset 0 0 0 1px rgba(53,224,216,.35);
}
.nav-links a.active::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:2px;
  transform:translateX(-50%);
  width:20px;
  height:2px;
  border-radius:2px;
  background:var(--aurora);
  box-shadow:0 0 10px rgba(53,224,216,.7);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  align-items:center;
  justify-content:center;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.06);
  color:var(--text);
  cursor:pointer;
}
.nav-toggle span{
  position:relative;
  display:block;
  width:18px;
  height:2px;
  background:currentColor;
  border-radius:2px;
}
.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}

/* ---------- 按钮 ---------- */
.btn-main,
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:var(--radius-md);
  font-size:15.5px;
  font-weight:600;
  line-height:1.4;
  min-height:44px;
  border:0;
  cursor:pointer;
  transition:transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
}
.btn-main{
  color:#04121A;
  background:linear-gradient(120deg, var(--aurora), var(--brand) 82%);
  box-shadow:0 10px 26px rgba(53,224,216,.28);
}
.btn-main:hover{
  color:#04121A;
  transform:translateY(-2px);
  box-shadow:0 18px 36px rgba(53,224,216,.42);
}
.btn-main:active{transform:translateY(1px)}
.btn-main:focus-visible{outline:2px solid var(--aurora);outline-offset:3px}
.btn-ghost{
  color:var(--text);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.btn-ghost:hover{
  color:var(--text);
  border-color:rgba(53,224,216,.5);
  background:rgba(53,224,216,.10);
  transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(1px)}
.btn-ghost:focus-visible{outline:2px solid var(--aurora);outline-offset:3px}
.btn-sm{padding:9px 18px;font-size:14.5px;min-height:40px}

/* ---------- Hero ---------- */
.hero-wrap{padding-top:126px}
.hero{
  position:relative;
  border-radius:26px;
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  min-height:520px;
}
.hero-media{
  position:absolute;
  inset:0;
  background:url("/assets/images/backpic/back-3.webp") center/cover no-repeat;
  transform:scale(1.02);
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg, rgba(7,11,30,.68), rgba(7,11,30,.88) 52%, rgba(7,11,30,.97));
}
.hero-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.25fr .75fr;
  gap:48px;
  align-items:center;
  padding:78px 60px;
}
.hero-eyebrow{
  display:inline-block;
  font-size:13.5px;
  letter-spacing:1px;
  color:var(--aurora);
  border:1px solid rgba(53,224,216,.32);
  background:rgba(53,224,216,.08);
  border-radius:999px;
  padding:5px 14px;
  margin-bottom:22px;
}
.hero h1{
  font-size:46px;
  line-height:1.26;
  margin-bottom:20px;
  letter-spacing:0;
}
.hero-lead{
  font-size:17px;
  color:#CDD6EC;
  max-width:620px;
  margin-bottom:24px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.tag{
  font-size:13.5px;
  color:var(--muted);
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  border-radius:999px;
  padding:6px 14px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px}
.hero-card{
  background:linear-gradient(180deg, rgba(255,255,255,.09), rgba(255,255,255,.035));
  border:1px solid rgba(255,255,255,.14);
  border-radius:22px;
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow-deep);
  padding:28px 26px;
}
.hero-score{display:flex;align-items:baseline;gap:6px}
.score-num{
  font-family:"Inter","HarmonyOS Sans",system-ui,sans-serif;
  font-size:44px;
  font-weight:700;
  color:var(--aurora);
  line-height:1.1;
}
.score-max{color:var(--muted);font-size:15px}
.score-note{color:var(--muted);font-size:13.5px;margin:6px 0 20px}
.hero-card-list{display:flex;flex-direction:column;gap:0}
.hero-card-list li{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:13px 0;
  border-top:1px solid var(--line-soft);
  font-size:15px;
}
.hero-card-list li:first-child{border-top:0}
.hero-card-list span{color:var(--muted)}
.hero-card-list strong{color:var(--text);font-weight:600}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0}
.section-tight{padding:20px 0 0}
.section-head{
  max-width:780px;
  margin:0 auto 46px;
  text-align:center;
}
.section-head h2{
  font-size:30px;
  line-height:1.4;
  margin-bottom:14px;
}
.section-head p{color:var(--muted);font-size:16.5px}

/* ---------- 玻璃卡片 ---------- */
.glass-card{
  position:relative;
  background:linear-gradient(180deg, rgba(255,255,255,.062), rgba(255,255,255,.028));
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}
.glass-card::before{
  content:"";
  position:absolute;
  left:18px;
  right:18px;
  top:0;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(53,224,216,.55), transparent);
  opacity:.75;
  z-index:3;
}
.glass-card:hover{
  transform:translateY(-4px);
  border-color:rgba(53,224,216,.42);
  box-shadow:var(--shadow-deep);
}
.card-media{position:relative;overflow:hidden}
.card-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  transition:transform .35s ease;
}
.card-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg, rgba(7,11,30,.06) 38%, rgba(9,14,36,.66));
}
.glass-card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:22px 24px 26px}
.card-body h3{font-size:20px;margin-bottom:10px;transition:color .2s ease}
.glass-card:hover .card-body h3{color:var(--aurora)}
.card-body p{color:var(--muted);font-size:15.5px}
.badge-soft{
  display:inline-block;
  font-size:13px;
  color:var(--aurora);
  border:1px solid rgba(53,224,216,.32);
  background:rgba(53,224,216,.08);
  border-radius:999px;
  padding:3px 12px;
  margin-bottom:12px;
}

/* ---------- 拼贴网格 ---------- */
.mosaic{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr;
  grid-template-rows:repeat(2, minmax(0, 1fr));
  gap:22px;
}
.mosaic .feature{
  grid-row:span 2;
  display:flex;
  flex-direction:column;
}
.mosaic .feature .card-media{flex:1 1 auto;min-height:300px}
.mosaic .feature .card-media img{height:100%;aspect-ratio:auto;min-height:300px}
.mosaic .feature .card-body{padding:26px 28px 30px}
.mosaic .feature h3{font-size:24px}

/* ---------- 指标带 ---------- */
.metrics{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  border:1px solid var(--line);
  border-radius:20px;
  background:linear-gradient(180deg, rgba(255,255,255,.055), rgba(255,255,255,.018));
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.metric{padding:30px 26px}
.metric + .metric{border-left:1px solid var(--line-soft)}
.metric-num{
  display:block;
  font-family:"Inter","HarmonyOS Sans",system-ui,sans-serif;
  font-size:34px;
  font-weight:700;
  color:var(--aurora);
  line-height:1.2;
  margin-bottom:8px;
}
.metric-num em{font-size:16px;font-style:normal;color:var(--muted);margin-left:4px;font-weight:500}
.metric-label{color:var(--muted);font-size:14.5px}
.metrics-note{
  text-align:center;
  color:var(--muted);
  font-size:14px;
  margin-top:20px;
}

/* ---------- 参数对照表 ---------- */
.table-wrap{
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:18px;
  background:rgba(14,21,51,.6);
  box-shadow:var(--shadow-card);
}
.spec-table{
  width:100%;
  min-width:760px;
  border-collapse:collapse;
}
.spec-table th,
.spec-table td{
  padding:16px 22px;
  text-align:left;
  font-size:15.5px;
  border-bottom:1px solid var(--line-soft);
  vertical-align:middle;
}
.spec-table thead th{
  font-size:14.5px;
  font-weight:600;
  color:var(--text);
  background:rgba(58,107,255,.16);
  white-space:nowrap;
}
.spec-table tbody td{color:var(--muted)}
.spec-table tbody td:first-child{
  color:var(--text);
  font-weight:600;
  white-space:nowrap;
}
.spec-table tbody tr:nth-child(even){background:rgba(255,255,255,.022)}
.spec-table tbody tr:hover{background:rgba(53,224,216,.06)}
.spec-table tbody tr:last-child td{border-bottom:0}

/* ---------- 使用反馈 ---------- */
.voices{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:24px;
  align-items:start;
}
.voice{
  margin:0;
  padding:28px 26px 26px;
  display:flex;
  flex-direction:column;
  gap:18px;
}
.voice:nth-child(2){margin-top:30px}
.voice:nth-child(3){margin-top:-14px}
.voice blockquote{
  position:relative;
  margin:0;
  padding-left:20px;
  font-size:16px;
  line-height:1.85;
  color:#D8DFF3;
}
.voice blockquote::before{
  content:"";
  position:absolute;
  left:0;
  top:6px;
  bottom:6px;
  width:2px;
  border-radius:2px;
  background:linear-gradient(180deg, var(--aurora), rgba(53,224,216,0));
}
.voice-meta{
  display:flex;
  align-items:center;
  gap:12px;
  margin-top:auto;
  padding-top:16px;
  border-top:1px solid var(--line-soft);
}
.avatar{
  width:42px;
  height:42px;
  flex:0 0 42px;
  border-radius:50%;
  display:grid;
  place-items:center;
  font-weight:700;
  font-size:16px;
  color:#04121A;
  background:linear-gradient(135deg, var(--aurora), var(--brand));
}
.voice-name{display:flex;flex-direction:column;line-height:1.4}
.voice-name strong{font-size:15.5px;font-weight:600}
.voice-name span{font-size:13.5px;color:var(--muted)}
.voice-stars{
  margin-left:auto;
  color:var(--gold);
  font-size:14px;
  letter-spacing:2px;
}

/* ---------- FAQ ---------- */
.faq-list{
  max-width:880px;
  margin:0 auto;
  display:flex;
  flex-direction:column;
  gap:14px;
}
.faq-item{
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:14px;
  overflow:hidden;
  transition:border-color .22s ease, background .22s ease;
}
.faq-item:hover{background:rgba(255,255,255,.06)}
.faq-item:has(.collapse.show){
  border-color:rgba(53,224,216,.42);
  background:rgba(53,224,216,.055);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:18px 22px;
  background:transparent;
  border:0;
  color:var(--text);
  font-size:16.5px;
  font-weight:600;
  text-align:left;
  cursor:pointer;
  transition:box-shadow .22s ease, color .22s ease;
}
.faq-q:hover{color:var(--aurora)}
.faq-q[aria-expanded="true"]{box-shadow:inset 2px 0 0 var(--aurora)}
.faq-q:focus-visible{outline:2px solid var(--aurora);outline-offset:-4px}
.faq-icon{
  position:relative;
  width:18px;
  height:18px;
  flex:0 0 18px;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--aurora);
  border-radius:2px;
  transition:transform .25s ease, opacity .25s ease;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-q[aria-expanded="true"] .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{
  padding:0 22px 20px;
  color:var(--muted);
  font-size:16px;
  line-height:1.85;
}

/* ---------- 底部 CTA ---------- */
.cta-band{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  padding:42px 46px;
  border-radius:22px;
  border:1px solid rgba(53,224,216,.24);
  background:linear-gradient(120deg, rgba(58,107,255,.22), rgba(53,224,216,.13) 58%, rgba(255,255,255,.03));
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow-card);
}
.cta-band h2{font-size:28px;margin-bottom:12px}
.cta-band p{color:#CBD5EC;max-width:660px;font-size:16px}
.cta-actions{display:flex;gap:14px;flex:0 0 auto}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  z-index:1;
  margin-top:96px;
  padding:72px 0 28px;
  background:var(--panel-deep);
  border-top:1px solid var(--line);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:38px;
}
.footer-brand p{
  color:var(--muted);
  font-size:15px;
  margin-top:16px;
  max-width:330px;
}
.footer-col h4{
  font-size:16px;
  margin-bottom:18px;
  color:var(--text);
}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col li{
  color:var(--muted);
  font-size:15px;
}
.footer-col a{
  color:var(--muted);
  transition:color .2s ease, transform .2s ease;
  display:inline-block;
}
.footer-col a:hover{color:var(--aurora);transform:translateX(2px)}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  margin-top:46px;
  padding-top:22px;
  border-top:1px solid var(--line);
  color:var(--muted);
  font-size:14px;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .hero h1{font-size:40px}
  .hero-inner{padding:64px 44px;gap:36px}
  .container{padding-left:22px;padding-right:22px}
}
@media (max-width:991.98px){
  .site-header{padding:0 16px;top:10px}
  .nav-shell{padding:10px 12px 10px 14px;gap:12px}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .nav-menu{
    position:absolute;
    left:0;
    right:0;
    top:calc(100% + 12px);
    flex-direction:column;
    align-items:stretch;
    gap:14px;
    padding:16px;
    border-radius:20px;
    background:rgba(8,13,32,.97);
    border:1px solid var(--line);
    box-shadow:0 26px 54px rgba(0,0,0,.55);
  }
  .nav-links{flex-direction:column;align-items:stretch;gap:6px}
  .nav-links a{padding:12px 14px;border-radius:12px;font-size:15.5px}
  .nav-links a.active{background:rgba(53,224,216,.14)}
  .nav-links a.active::after{display:none}
  .nav-actions{display:flex;gap:10px}
  .nav-actions .btn-main,
  .nav-actions .btn-ghost{flex:1}
  .hero-wrap{padding-top:104px}
  .hero-inner{grid-template-columns:1fr;padding:52px 32px}
  .hero h1{font-size:34px}
  .hero-card{max-width:520px}
  .section{padding:68px 0}
  .section-tight{padding:12px 0 0}
  .section-head h2{font-size:26px}
  .mosaic{grid-template-columns:1fr 1fr;grid-template-rows:auto}
  .mosaic .feature{grid-column:span 2;grid-row:auto}
  .mosaic .feature .card-media{min-height:240px}
  .mosaic .feature .card-media img{min-height:240px}
  .voices{grid-template-columns:1fr 1fr}
  .voice:nth-child(3){margin-top:0}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px 30px;gap:24px}
  .cta-band h2{font-size:24px}
}
@media (min-width:992px){
  .nav-menu.collapse:not(.show){display:flex}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .hero{border-radius:20px;min-height:auto}
  .hero-inner{padding:44px 22px}
  .hero h1{font-size:29px;line-height:1.35}
  .hero-lead{font-size:16px}
  .hero-eyebrow{font-size:12.5px;margin-bottom:16px}
  .btn-main,.btn-ghost{padding:11px 20px;font-size:15px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn-main,
  .hero-cta .btn-ghost{width:100%}
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
  .section-head h2{font-size:23px}
  .metrics{grid-template-columns:1fr 1fr}
  .metric{padding:22px 18px;border-left:1px solid var(--line-soft);border-top:1px solid var(--line-soft)}
  .metric + .metric{border-left:1px solid var(--line-soft)}
  .metric:nth-child(-n+2){border-top:0}
  .metric:nth-child(odd){border-left:0}
  .metric-num{font-size:28px}
  .mosaic{grid-template-columns:1fr}
  .mosaic .feature{grid-column:auto}
  .voices{grid-template-columns:1fr}
  .voice:nth-child(2){margin-top:0}
  .card-body{padding:20px 20px 24px}
  .mosaic .feature .card-body{padding:22px 20px 26px}
  .mosaic .feature h3{font-size:21px}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn-main,
  .cta-actions .btn-ghost{width:100%}
  .site-footer{padding:56px 0 24px;margin-top:64px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .container{padding-left:16px;padding-right:16px}
  .brand-text{font-size:14.5px}
  .brand-text small{font-size:11px}
  .hero-card{padding:22px 18px}
  .score-num{font-size:36px}
  .faq-q{font-size:15.5px;padding:16px 18px}
  .faq-a{padding:0 18px 18px;font-size:15.5px}
}

/* roulang page: category3 */
:root{
  --bg:#070B1E;
  --panel:#0E1533;
  --glass:rgba(255,255,255,0.045);
  --glass-strong:rgba(255,255,255,0.075);
  --primary:#3A6BFF;
  --accent:#35E0D8;
  --gold:#FFC46B;
  --text:#E8ECF8;
  --muted:#A6B0CC;
  --line:rgba(255,255,255,0.10);
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 18px 40px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.08);
  --shadow-soft:0 12px 28px rgba(0,0,0,.35), inset 0 1px 0 rgba(255,255,255,.06);
  --space-section:110px;
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --font-num:"Inter","SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background-color:var(--bg);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(58,107,255,.16), transparent 42%),
    radial-gradient(circle at 82% 4%, rgba(53,224,216,.12), transparent 38%),
    radial-gradient(circle at 50% 96%, rgba(58,107,255,.10), transparent 46%),
    radial-gradient(rgba(255,255,255,.055) 1px, transparent 1px);
  background-size:auto, auto, auto, 26px 26px;
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:var(--text);text-decoration:none;transition:color .22s ease}
a:hover{color:var(--accent)}
img{max-width:100%;display:block}
button,input{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.32;letter-spacing:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
::selection{background:rgba(53,224,216,.3);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

.container{max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto;width:100%}
.section{padding:var(--space-section) 0;position:relative}
.section::after{
  content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);
  width:min(1080px,88%);height:1px;
  background:linear-gradient(90deg, transparent, rgba(53,224,216,.34), transparent);
}
.section:last-of-type::after{display:none}
.sec-head{max-width:760px;margin-bottom:48px}
.sec-head h2{font-size:31px;margin-bottom:14px}
.sec-head .lead{color:var(--muted);font-size:16.5px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--accent);letter-spacing:.02em;
  padding:5px 14px;border:1px solid rgba(53,224,216,.32);border-radius:999px;
  background:rgba(53,224,216,.07);margin-bottom:18px;
}
.eyebrow i{font-size:11px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:999px;border:1px solid transparent;
  font-size:15.5px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .2s ease, box-shadow .24s ease, border-color .22s ease, background-color .22s ease, color .22s ease;
}
.btn-primary{
  background:linear-gradient(120deg, var(--accent), var(--primary) 82%);
  color:#06122C;border:none;
  box-shadow:0 0 24px rgba(53,224,216,.32), 0 12px 26px rgba(0,0,0,.4);
}
.btn-primary:hover{color:#06122C;transform:translateY(-2px);box-shadow:0 0 32px rgba(53,224,216,.45), 0 16px 32px rgba(0,0,0,.48)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:var(--glass);color:var(--text);border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.btn-ghost:hover{color:#fff;background:var(--glass-strong);border-color:rgba(53,224,216,.45);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14.5px}
.btn-block{width:100%}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:1030;padding:16px 0 8px}
.nav-shell{
  display:flex;align-items:center;gap:22px;
  padding:10px 14px 10px 20px;border-radius:999px;
  background:rgba(14,21,51,.62);
  border:1px solid rgba(255,255,255,.08);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:0 10px 30px rgba(0,0,0,.35), inset 0 1px 0 rgba(255,255,255,.07);
  transition:background-color .28s ease, box-shadow .28s ease, border-color .28s ease;
}
.site-header.scrolled .nav-shell{
  background:rgba(9,14,36,.9);
  box-shadow:0 16px 40px rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.08);
  border-color:rgba(53,224,216,.22);
}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{
  width:28px;height:28px;border-radius:50%;position:relative;flex-shrink:0;
  border:2px solid rgba(53,224,216,.85);
  box-shadow:0 0 16px rgba(53,224,216,.4);
}
.brand-mark::after{
  content:"";position:absolute;inset:6px;border-radius:50%;
  background:linear-gradient(135deg, var(--accent), var(--primary));
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;font-weight:700;font-size:16px;color:var(--text)}
.brand-text small{font-size:11.5px;font-weight:500;color:var(--muted);letter-spacing:.04em}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:nowrap}
.nav-links a{
  position:relative;padding:9px 15px;border-radius:999px;font-size:14.8px;color:var(--muted);
  transition:color .2s ease, background-color .2s ease, transform .2s ease, box-shadow .2s ease;
  white-space:nowrap;
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.06);transform:translateY(-1px)}
.nav-links a.active{
  color:#fff;background:rgba(53,224,216,.12);
  box-shadow:0 0 0 1px rgba(53,224,216,.34), 0 0 18px rgba(53,224,216,.18);
}
.nav-links a.active::after{
  content:"";position:absolute;left:50%;bottom:1px;transform:translateX(-50%);
  width:22px;height:2px;border-radius:2px;background:var(--accent);box-shadow:0 0 10px rgba(53,224,216,.85);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:50%;background:var(--glass);
  border:1px solid var(--line);color:var(--text);cursor:pointer;
}
.nav-toggle:hover{border-color:rgba(53,224,216,.45);color:var(--accent)}

/* ---------- Hero ---------- */
.hero{
  position:relative;padding:120px 0 84px;overflow:hidden;
  background-image:linear-gradient(100deg, rgba(7,11,30,.94) 12%, rgba(7,11,30,.78) 58%, rgba(7,11,30,.6) 100%),
                   url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 78% 24%, rgba(53,224,216,.18), transparent 46%);
  pointer-events:none;
}
.hero-inner{position:relative;max-width:820px}
.crumb{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--muted);margin-bottom:26px;flex-wrap:wrap}
.crumb .rail{width:46px;height:1px;background:linear-gradient(90deg, rgba(53,224,216,.85), transparent);flex-shrink:0}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--accent)}
.crumb span.now{color:var(--muted);opacity:.8}
.hero h1{font-size:44px;line-height:1.24;margin-bottom:20px}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero .sub{font-size:17px;color:var(--muted);max-width:640px;margin-bottom:28px}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.chip{
  display:inline-flex;align-items:center;gap:7px;font-size:13.5px;color:var(--text);
  padding:6px 14px;border-radius:999px;background:var(--glass);border:1px solid var(--line);
}
.chip i{color:var(--gold);font-size:12px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-note{font-size:13.5px;color:var(--muted);margin-top:22px;display:flex;align-items:center;gap:8px}
.hero-note i{color:var(--accent)}

/* ---------- 指标带 ---------- */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;
}
.metric{padding:30px 26px;border-right:1px solid var(--line);position:relative}
.metric:last-child{border-right:none}
.metric .num{
  font-family:var(--font-num);font-size:30px;font-weight:700;color:var(--accent);
  line-height:1.2;letter-spacing:-.01em;
}
.metric .name{font-size:14px;color:var(--muted);margin-top:8px}
.metrics-note{margin-top:22px;color:var(--muted);font-size:14.5px;display:flex;flex-wrap:wrap;gap:16px;align-items:center}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;padding:6px 0 0;list-style:none;margin:0}
.timeline::before{
  content:"";position:absolute;left:17px;top:14px;bottom:26px;width:1px;
  background:linear-gradient(180deg, transparent, rgba(53,224,216,.55) 12%, rgba(53,224,216,.45) 82%, transparent);
}
.tl-item{position:relative;padding-left:64px;padding-bottom:30px}
.tl-item:last-child{padding-bottom:0}
.tl-node{
  position:absolute;left:0;top:6px;width:35px;height:35px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(53,224,216,.12);border:1px solid rgba(53,224,216,.6);
  box-shadow:0 0 22px rgba(53,224,216,.32);
  font-family:var(--font-num);font-size:13px;font-weight:700;color:var(--accent);
}
.stage-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 28px;box-shadow:var(--shadow-soft);
  transition:transform .24s ease, border-color .24s ease, box-shadow .24s ease;
}
.stage-card:hover{transform:translateY(-4px);border-color:rgba(53,224,216,.42);box-shadow:var(--shadow)}
.stage-top{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:12px}
.stage-top h3{font-size:20px}
.stage-tag{
  font-size:12.5px;color:var(--gold);padding:3px 11px;border-radius:999px;
  border:1px solid rgba(255,196,107,.36);background:rgba(255,196,107,.08);
}
.stage-card p{color:var(--muted);font-size:15.5px}
.stage-list{margin-top:16px;display:grid;gap:10px}
.stage-list li{display:flex;gap:10px;font-size:15px;color:var(--text)}
.stage-list li i{color:var(--accent);margin-top:6px;font-size:11px}
.stage-media{margin-top:18px;border-radius:14px;overflow:hidden;border:1px solid var(--line)}
.stage-media img{width:100%;aspect-ratio:16/7;object-fit:cover}

/* ---------- 校验方式 ---------- */
.verify-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.verify-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow-soft);position:relative;overflow:hidden;
  transition:transform .24s ease, border-color .24s ease;
}
.verify-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg, transparent, rgba(255,255,255,.35), transparent);
}
.verify-card:hover{transform:translateY(-4px);border-color:rgba(53,224,216,.4)}
.verify-icon{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
  background:rgba(58,107,255,.14);border:1px solid rgba(58,107,255,.35);
  color:var(--accent);font-size:18px;margin-bottom:16px;
}
.verify-card h3{font-size:18.5px;margin-bottom:10px}
.verify-card p{color:var(--muted);font-size:15px}
.verify-side{
  background:linear-gradient(160deg, rgba(58,107,255,.15), rgba(53,224,216,.06));
  border:1px solid rgba(53,224,216,.24);
}
.verify-side .verify-icon{background:rgba(53,224,216,.14);border-color:rgba(53,224,216,.4)}

/* ---------- 拦截场景 ---------- */
.scene-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:46px;align-items:center}
.scene-list{display:grid;gap:0;margin-top:8px}
.scene-row{
  display:flex;gap:18px;padding:20px 0;border-bottom:1px solid var(--line);
}
.scene-row:last-child{border-bottom:none}
.scene-row .idx{
  font-family:var(--font-num);font-size:15px;color:var(--gold);font-weight:700;min-width:34px;padding-top:3px;
}
.scene-row h4{font-size:16.5px;margin-bottom:6px}
.scene-row p{font-size:14.8px;color:var(--muted)}
.scene-media{
  position:relative;border-radius:22px;overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.scene-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.scene-float{
  position:absolute;left:18px;right:18px;bottom:18px;
  background:rgba(10,16,40,.72);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,.14);border-radius:16px;padding:16px 18px;
}
.scene-float strong{display:block;font-size:15px;margin-bottom:6px}
.scene-float span{font-size:13.5px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px}
.accordion-item{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius) !important;
  margin-bottom:14px;overflow:hidden;
}
.accordion-button{
  background:transparent;color:var(--text);font-size:17px;font-weight:600;
  padding:20px 24px;box-shadow:none !important;border-radius:var(--radius) !important;
  position:relative;
}
.accordion-button::after{display:none}
.accordion-button::before{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;font-size:13px;
  color:var(--accent);position:absolute;right:24px;top:50%;transform:translateY(-50%);
  transition:transform .24s ease;
}
.accordion-button:not(.collapsed)::before{content:"\f068";transform:translateY(-50%) rotate(180deg)}
.accordion-button:not(.collapsed){
  color:#fff;background:rgba(53,224,216,.07);
}
.accordion-button:not(.collapsed)::after{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:2px;border-radius:2px;
  background:var(--accent);box-shadow:0 0 14px rgba(53,224,216,.7);
}
.accordion-button:hover{color:var(--accent)}
.accordion-body{padding:4px 24px 24px;color:var(--muted);font-size:15.5px}
.accordion-body a{color:var(--accent)}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(120deg, rgba(58,107,255,.18), rgba(53,224,216,.10));
  border:1px solid rgba(53,224,216,.28);border-radius:26px;
  padding:44px 46px;box-shadow:var(--shadow);
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:27px;margin-bottom:12px}
.cta-band p{color:var(--muted);font-size:15.5px;max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#050814;border-top:1px solid var(--line);
  padding:70px 0 26px;margin-top:20px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:38px}
.footer-brand p{color:var(--muted);font-size:14.8px;margin-top:18px;max-width:300px}
.footer-col h4{font-size:15.5px;margin-bottom:18px;color:var(--text)}
.footer-col ul{display:grid;gap:11px}
.footer-col li,.footer-col a{font-size:14.8px;color:var(--muted)}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:var(--muted);opacity:.9;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--space-section:92px}
  .hero h1{font-size:38px}
  .nav-links a{padding:9px 12px;font-size:14.2px}
}
@media (max-width:991px){
  :root{--space-section:76px}
  .nav-shell{flex-wrap:wrap;gap:12px;border-radius:24px;padding:12px 14px 12px 18px}
  .brand{flex:1}
  .nav-toggle{display:inline-flex}
  .nav-links{
    display:none;width:100%;flex-direction:column;gap:4px;align-items:stretch;
    margin:12px 0 0;padding-top:14px;border-top:1px solid var(--line);
  }
  .nav-shell.open .nav-links{display:flex}
  .nav-links a{padding:12px 14px;border-radius:12px}
  .nav-links a.active::after{display:none}
  .nav-actions{display:none;width:100%;flex-direction:column;gap:10px;padding-top:14px}
  .nav-shell.open .nav-actions{display:flex}
  .nav-actions .btn{width:100%}
  .hero{padding:86px 0 64px}
  .hero h1{font-size:30px}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .metric:nth-child(2){border-right:none}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line)}
  .verify-grid{grid-template-columns:1fr}
  .scene-wrap{grid-template-columns:1fr;gap:34px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .cta-band{padding:34px 28px}
}
@media (max-width:520px){
  :root{--space-section:60px}
  body{font-size:16px}
  .container{padding-left:16px;padding-right:16px}
  .hero h1{font-size:27px}
  .hero .sub{font-size:16px}
  .sec-head h2{font-size:23px}
  .metrics{grid-template-columns:1fr}
  .metric{border-right:none;border-bottom:1px solid var(--line)}
  .metric:last-child{border-bottom:none}
  .tl-item{padding-left:48px}
  .tl-node{width:28px;height:28px;font-size:12px}
  .timeline::before{left:13px}
  .stage-card{padding:20px}
  .cta-band h2{font-size:22px}
  .footer-grid{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
}