/* roulang page: index */
:root{
  --bg:#070B12;
  --bg-2:#0C131C;
  --glass:rgba(255,255,255,.045);
  --glass-2:rgba(255,255,255,.07);
  --line:rgba(18,227,166,.16);
  --line-strong:rgba(18,227,166,.28);
  --brand:#12E3A6;
  --brand-soft:rgba(18,227,166,.1);
  --action:#FF9A3C;
  --text:#EAF1F8;
  --text-2:#96A6BC;
  --text-3:#5F6E85;
  --danger:#FF6B57;
  --radius:18px;
  --radius-sm:12px;
  --radius-img:14px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --glow:0 0 24px rgba(18,227,166,.32);
  --container:1200px;
  --gap:24px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"DIN Alternate","Roboto Mono",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);
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:hover{color:#62F3C8}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:.2px}
p{margin:0 0 1.4em}
ul,ol{margin:0 0 1.4em;padding-left:1.3em}
li{margin-bottom:.5em}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px}
::selection{background:rgba(18,227,166,.28)}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.5px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;position:relative;z-index:1}
.section{padding:96px 0;position:relative;z-index:1}
.section--tight{padding:72px 0}
.section--alt{background:linear-gradient(180deg,rgba(12,19,28,.85),rgba(7,11,18,0))}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px}
.section-head h2{font-size:30px;margin-top:12px}
.section-head p{margin:14px 0 0;color:var(--text-2);max-width:620px;font-size:15px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:2px;color:var(--brand);
  font-family:var(--mono);text-transform:uppercase;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:var(--glow)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,background .2s ease,box-shadow .2s ease,border-color .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#FF9A3C,#FF7A26);
  color:#1A0E02;border-color:rgba(255,154,60,.5);
  box-shadow:0 10px 26px rgba(255,122,38,.28);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);color:#1A0E02}
.btn-brand{
  background:linear-gradient(135deg,rgba(18,227,166,.9),rgba(18,227,166,.65));
  color:#052A20;border-color:rgba(18,227,166,.5);box-shadow:var(--glow);
}
.btn-brand:hover{filter:brightness(1.08);transform:translateY(-1px);color:#052A20}
.btn-outline{
  background:transparent;color:var(--brand);border-color:var(--line-strong);
}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--text);border-color:transparent;padding:12px 8px}
.btn-ghost:hover{color:var(--brand)}
.btn:active{transform:translateY(1px)}
.btn[disabled],.btn.is-disabled{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none}
.btn-sm{padding:9px 18px;font-size:14px}

.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.link-arrow span{transition:transform .2s ease}
.link-arrow:hover span{transform:translateX(4px)}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,18,.82);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.nav{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:74px;
}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text);font-weight:700}
.logo:hover{color:var(--text)}
.logo-dot{width:10px;height:10px;border-radius:50%;background:var(--brand);box-shadow:var(--glow);flex:none}
.logo-main{font-size:19px;letter-spacing:.4px}
.logo-sub{
  font-size:12px;font-weight:600;color:var(--brand);
  border:1px solid var(--line-strong);background:var(--brand-soft);
  padding:3px 8px;border-radius:999px;letter-spacing:1px;
}
.nav-menu{display:flex;align-items:center;gap:10px}
.nav-link{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 18px;border-radius:999px;
  font-size:15px;font-weight:600;color:var(--text-2);
  border:1px solid transparent;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--text);border-color:var(--line-strong);background:rgba(18,227,166,.06)}
.nav-link.is-active{color:var(--brand);border-color:var(--line-strong);background:var(--brand-soft)}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  color:var(--text);cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* Hero */
.hero{padding:88px 0 96px;position:relative;overflow:hidden}
.hero::after{
  content:"";position:absolute;top:-160px;right:-140px;width:520px;height:520px;
  background:radial-gradient(circle,rgba(18,227,166,.16),transparent 62%);
  pointer-events:none;
}
.hero-grid{
  display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:center;
}
.hero-title{font-size:48px;line-height:1.15;margin:18px 0 0}
.hero-title em{font-style:normal;color:var(--brand)}
.hero-sub{
  margin:20px 0 0;font-size:17px;color:var(--text-2);max-width:460px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-points{
  display:flex;flex-wrap:wrap;gap:24px;margin-top:36px;padding-top:24px;
  border-top:1px dashed rgba(255,255,255,.1);
}
.hero-point{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2)}
.hero-point i{
  width:22px;height:22px;border-radius:6px;flex:none;
  border:1px solid var(--line-strong);background:var(--brand-soft);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--brand);font-style:normal;font-size:12px;font-family:var(--mono);
}
.hero-visual{position:relative}
.hero-frame{
  position:relative;border-radius:22px;overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
  background:var(--bg-2);
}
.hero-frame img{width:100%;aspect-ratio:16/10;object-fit:cover;opacity:.92}
.hero-frame::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;z-index:2;
  background:linear-gradient(90deg,transparent,var(--brand),transparent);
  opacity:.85;
}
.hero-frame-top{
  position:absolute;top:14px;left:14px;right:14px;z-index:3;
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text);font-family:var(--mono);
  background:rgba(7,11,18,.6);border:1px solid var(--line);
  border-radius:999px;padding:6px 14px;backdrop-filter:blur(8px);
}
.hero-frame-top .status{display:inline-flex;align-items:center;gap:8px}
.hero-frame-top .status i{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:var(--glow);font-style:normal}
.hero-float{
  position:absolute;right:-14px;bottom:-26px;
  background:rgba(12,19,28,.92);border:1px solid var(--line-strong);
  border-radius:var(--radius);padding:16px 20px;min-width:190px;
  box-shadow:var(--shadow);backdrop-filter:blur(12px);
}
.hero-float .float-label{display:block;font-size:12px;color:var(--text-3);letter-spacing:1px}
.hero-float strong{display:block;font-family:var(--mono);font-size:26px;color:var(--brand);line-height:1.3}
.hero-float .float-sub{display:block;font-size:12px;color:var(--text-2)}

/* 三步阶梯 */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.step{
  position:relative;background:var(--glass);border:1px solid var(--line);
  border-radius:var(--radius);padding:32px 28px;backdrop-filter:blur(16px);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.step:nth-child(2){margin-top:32px}
.step:nth-child(3){margin-top:64px}
.step:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow)}
.step-num{
  font-family:var(--mono);font-size:40px;line-height:1;color:transparent;
  -webkit-text-stroke:1px var(--brand);letter-spacing:2px;
}
.step h3{font-size:20px;margin-top:18px}
.step p{color:var(--text-2);font-size:15px;margin:12px 0 0}
.step-track{
  height:1px;margin:26px 0 0;border-top:1px dashed rgba(18,227,166,.35);position:relative;
}
.step-track::after{
  content:"";position:absolute;right:0;top:-3px;width:6px;height:6px;border-radius:50%;
  background:var(--action);
}

/* 看点网格 */
.feature-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:var(--gap)}
.feature-card{
  position:relative;overflow:hidden;border-radius:var(--radius);
  border:1px solid var(--line);background:var(--bg-2);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
  display:flex;flex-direction:column;
}
.feature-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow)}
.feature-card img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;opacity:.8;transition:opacity .3s ease}
.feature-card:hover img{opacity:1}
.feature-card--lg{grid-row:span 2}
.feature-card--lg img{aspect-ratio:auto;min-height:280px;height:100%}
.feature-body{
  padding:20px 22px 24px;
  background:linear-gradient(180deg,rgba(7,11,18,.2),rgba(7,11,18,.9));
}
.feature-card--lg .feature-body{position:absolute;left:0;right:0;bottom:0}
.feature-body h3{font-size:18px;margin-top:12px}
.feature-body p{font-size:14px;color:var(--text-2);margin:10px 0 0}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;color:var(--brand);
  border:1px solid var(--line-strong);background:var(--brand-soft);
  padding:3px 10px;border-radius:999px;letter-spacing:.3px;
}
.badge--hot{color:var(--action);border-color:rgba(255,154,60,.35);background:rgba(255,154,60,.1)}
.meta-num{font-family:var(--mono);font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums}

/* 案例证明 */
.proof{display:grid;grid-template-columns:1fr 1.15fr;gap:56px;align-items:center}
.proof-lead{font-size:22px;font-weight:600;line-height:1.6;margin:0 0 32px}
.proof-lead em{font-style:normal;color:var(--brand)}
.stat-row{margin-bottom:24px}
.stat-top{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:10px}
.stat-top span{font-size:14px;color:var(--text-2)}
.stat-top strong{font-family:var(--mono);font-size:20px;color:var(--text)}
.stat-bar{height:6px;border-radius:999px;background:rgba(255,255,255,.07);overflow:hidden}
.stat-bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,rgba(18,227,166,.6),var(--brand));box-shadow:0 0 14px rgba(18,227,166,.4)}
.proof-cards{position:relative;min-height:420px}
.proof-card{
  position:absolute;width:74%;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line-strong);background:var(--bg-2);box-shadow:var(--shadow);
  transition:transform .25s ease,border-color .25s ease;
}
.proof-card:hover{transform:translateY(-4px) scale(1.01);border-color:var(--brand)}
.proof-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.proof-card figcaption{padding:14px 18px;font-size:14px;color:var(--text-2)}
.proof-card figcaption strong{display:block;color:var(--text);font-size:15px;margin-bottom:4px}
.proof-card--a{top:0;left:0;z-index:2}
.proof-card--b{bottom:0;right:0;top:26%;z-index:3}

/* FAQ */
.faq{display:grid;gap:14px;max-width:900px;margin:0 auto}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius);
  background:var(--glass);backdrop-filter:blur(16px);
  overflow:hidden;position:relative;
  transition:border-color .2s ease,background .2s ease;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:2px;
  background:var(--brand);opacity:0;transition:opacity .25s ease;border-radius:2px;
}
.faq-item[open]{border-color:var(--line-strong);background:var(--glass-2)}
.faq-item[open]::before{opacity:1}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px 20px 26px;
  display:flex;align-items:center;gap:14px;font-size:16px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{
  width:20px;height:20px;flex:none;position:relative;
  border:1px solid var(--line-strong);border-radius:6px;background:var(--brand-soft);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
  transition:transform .25s ease,opacity .25s ease;
}
.faq-icon::before{left:5px;right:5px;top:9px;height:2px}
.faq-icon::after{top:5px;bottom:5px;left:9px;width:2px}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{padding:0 24px 22px 60px;color:var(--text-2);font-size:15px}
.faq-a p{margin:0}

/* 最新信息 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--radius);
  background:var(--glass);backdrop-filter:blur(16px);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.news-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow)}
.news-thumb{display:block;position:relative;overflow:hidden;background:var(--bg-2)}
.news-thumb::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;z-index:2;
  background:linear-gradient(90deg,transparent,rgba(18,227,166,.8),transparent);
  opacity:.5;transition:opacity .25s ease;
}
.news-card:hover .news-thumb::before{opacity:1}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;opacity:.85;transition:opacity .3s ease,transform .4s ease}
.news-card:hover .news-thumb img{opacity:1;transform:scale(1.03)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.news-body h3{font-size:17px;line-height:1.5;margin:12px 0 0}
.news-body h3 a{color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body h3 a:hover{color:var(--brand)}
.news-body p{
  font-size:14px;color:var(--text-2);margin:10px 0 18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body .link-arrow{margin-top:auto}
.badge-row{display:flex;align-items:center;justify-content:space-between;gap:12px}

.empty-state{
  grid-column:1/-1;text-align:center;padding:64px 24px;
  border:1px dashed var(--line-strong);border-radius:var(--radius);
  background:var(--glass);
}
.empty-state .empty-icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:16px;
  border:1px solid var(--line-strong);background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:20px;color:var(--brand);
}
.empty-state p{color:var(--text-2);margin:0 0 20px}

/* 立即开通 */
.cta-band{
  border:1px solid var(--line-strong);border-radius:24px;
  background:linear-gradient(120deg,rgba(18,227,166,.10),rgba(12,19,28,.9) 45%,rgba(255,154,60,.08));
  backdrop-filter:blur(18px);
  padding:48px;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  box-shadow:var(--shadow);
}
.cta-band h2{font-size:30px;margin-top:14px}
.cta-band .cta-note{color:var(--text-2);font-size:15px;margin:14px 0 0}
.cta-form{display:grid;gap:16px}
.field{display:flex;flex-direction:column;gap:8px}
.field label{font-size:13px;color:var(--text-2);letter-spacing:.5px}
.field input{
  width:100%;padding:13px 16px;border-radius:var(--radius-sm);
  background:var(--bg-2);border:1px solid rgba(255,255,255,.1);
  color:var(--text);transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder{color:var(--text-3)}
.field input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(18,227,166,.16)}
.field.has-error input{border-color:var(--danger);box-shadow:0 0 0 3px rgba(255,107,87,.14)}
.field.is-ok input{border-color:var(--brand)}
.field .hint{font-size:12px;color:var(--danger);min-height:16px}
.field.is-ok .hint{color:var(--brand)}
.cta-form .btn{width:100%}
.form-note{font-size:12px;color:var(--text-3);margin:0;text-align:center}

/* 页脚 */
.site-footer{border-top:1px solid rgba(255,255,255,.07);background:rgba(12,19,28,.6);position:relative;z-index:1;padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-col h4{font-size:15px;color:var(--text);margin-bottom:18px;letter-spacing:.5px}
.footer-col p{font-size:14px;color:var(--text-2);margin:12px 0 0;max-width:320px}
.footer-links{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.footer-links a{color:var(--text-2);font-size:14px}
.footer-links a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.07);
  padding:22px 0 28px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .mono{font-size:13px}

/* 移动底部动作条 */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;height:56px;
  background:rgba(7,11,18,.94);backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
  padding:0 16px;align-items:center;gap:12px;
}
.mobile-bar .btn{flex:1;height:40px;padding:0 12px;font-size:14px}

/* 图片失败占位 */
.img-fallback{
  background:var(--bg-2);border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;
  color:var(--brand);font-family:var(--mono);font-size:18px;
}

@media (max-width:1200px){
  .container{padding:0 28px}
  .hero-title{font-size:42px}
  .feature-grid{grid-template-columns:1fr 1fr}
  .feature-card--lg{grid-column:span 2;grid-row:auto}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .proof{grid-template-columns:1fr;gap:40px}
  .proof-cards{min-height:360px}
}
@media (max-width:1024px){
  .section{padding:72px 0}
  .hero{padding:64px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-sub{max-width:100%}
  .steps{grid-template-columns:1fr 1fr}
  .step:nth-child(3){margin-top:0}
  .step:nth-child(2){margin-top:0}
  .cta-band{grid-template-columns:1fr;padding:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .section-head h2{font-size:24px}
  .hero-title{font-size:30px}
  .hero-sub{font-size:15px}
  .hero-float{position:static;margin-top:18px;width:100%;min-width:0}
  .hero-frame-top{font-size:12px;padding:5px 12px}
  .nav-menu{
    position:fixed;top:74px;left:0;right:0;z-index:65;
    flex-direction:column;align-items:stretch;gap:8px;
    background:rgba(7,11,18,.98);border-bottom:1px solid var(--line);
    padding:16px 20px 22px;transform:translateY(-12px);
    opacity:0;pointer-events:none;transition:opacity .22s ease,transform .22s ease;
  }
  .nav-menu.is-open{opacity:1;pointer-events:auto;transform:translateY(0)}
  .nav-menu .nav-link{padding:13px 16px;font-size:15px}
  .nav-toggle{display:inline-flex}
  .nav-actions .btn{display:none}
  .steps{grid-template-columns:1fr}
  .step{margin-top:0 !important}
  .feature-grid{grid-template-columns:1fr}
  .feature-card--lg{grid-column:auto}
  .feature-card--lg .feature-body{position:static}
  .news-grid{grid-template-columns:1fr}
  .proof-cards{min-height:300px}
  .proof-card{width:80%}
  .proof-lead{font-size:19px}
  .faq-a{padding-left:26px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .mobile-bar{display:flex}
  body{padding-bottom:56px}
}
@media (max-width:520px){
  .hero-title{font-size:28px}
  .logo-sub{display:none}
  .proof-card{position:relative;width:100%;top:auto!important;left:auto!important;right:auto!important;bottom:auto!important;margin-bottom:16px}
  .proof-cards{min-height:0}
}
@media (hover:none){
  .btn:hover,.step:hover,.news-card:hover,.feature-card:hover,.proof-card:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --bg:#070B12;
  --bg-2:#0C131C;
  --glass:rgba(255,255,255,.045);
  --glass-strong:rgba(255,255,255,.07);
  --line:rgba(18,227,166,.16);
  --line-strong:rgba(18,227,166,.34);
  --primary:#12E3A6;
  --primary-deep:#0FB98C;
  --accent:#FF9A3C;
  --text:#EAF1F8;
  --text-2:#96A6BC;
  --text-3:#5F6E85;
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --glow:0 0 24px rgba(18,227,166,.32);
  --t:.25s cubic-bezier(.4,0,.2,1);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  color:var(--text);
  background-color:var(--bg);
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px),
    radial-gradient(900px 520px at 12% -6%,rgba(18,227,166,.10),transparent 62%),
    radial-gradient(760px 460px at 96% 4%,rgba(255,154,60,.06),transparent 60%);
  background-size:32px 32px,32px 32px,auto,auto;
  background-attachment:fixed;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--primary);text-decoration:none;transition:color var(--t),border-color var(--t),background var(--t)}
a:hover{color:#7CF6D2}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit}
h1,h2,h3,h4{line-height:1.25;font-weight:700;letter-spacing:.2px}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(18,227,166,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#080D15}
::-webkit-scrollbar-thumb{background:#1D2A3A;border-radius:8px;border:2px solid #080D15}
::-webkit-scrollbar-thumb:hover{background:#28405a}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:56px 0}
.section-head{max-width:760px;margin-bottom:34px}
.section-head h2{font-size:26px;margin-bottom:12px}
.section-head p{color:var(--text-2);font-size:15px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:2px;color:var(--primary);text-transform:uppercase;font-family:var(--mono);margin-bottom:14px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px var(--primary)}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ---------- header / nav ---------- */
.site-header{position:sticky;top:0;z-index:80;background:rgba(7,11,18,.82);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid rgba(255,255,255,.06)}
.nav{display:flex;align-items:center;gap:18px;min-height:70px}
.logo{display:inline-flex;align-items:center;gap:9px;color:var(--text);font-weight:700;font-size:19px;white-space:nowrap}
.logo:hover{color:var(--text)}
.logo-dot{width:9px;height:9px;border-radius:50%;background:var(--primary);box-shadow:0 0 12px var(--primary);flex:none;animation:pulse 2.4s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.55;transform:scale(.82)}}
.logo-sub{font-size:13px;font-weight:400;color:var(--text-2);letter-spacing:1px}
.nav-menu{display:flex;align-items:center;gap:8px;margin-left:auto}
.nav-link{position:relative;display:inline-flex;align-items:center;gap:7px;padding:9px 16px;border-radius:999px;font-size:14.5px;color:var(--text-2);border:1px solid transparent;transition:color var(--t),background var(--t),border-color var(--t)}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05);border-color:var(--line)}
.nav-link.is-active{color:var(--primary);border-color:var(--line-strong);background:rgba(18,227,166,.08)}
.nav-link.is-active::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px var(--primary)}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-menu + .nav-actions{margin-left:0}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;background:var(--glass);border:1px solid var(--line);position:relative;cursor:pointer}
.nav-toggle span,.nav-toggle::before,.nav-toggle::after{content:"";position:absolute;left:11px;right:11px;height:2px;background:var(--text);border-radius:2px;transition:transform var(--t),opacity var(--t)}
.nav-toggle span{top:20px}
.nav-toggle::before{top:14px}
.nav-toggle::after{top:26px}
.nav-toggle[aria-expanded="true"] span{opacity:0}
.nav-toggle[aria-expanded="true"]::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"]::after{transform:translateY(-6px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;line-height:1;cursor:pointer;border:1px solid transparent;transition:transform var(--t),filter var(--t),background var(--t),border-color var(--t),color var(--t),box-shadow var(--t);text-align:center}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#04140E;box-shadow:var(--glow)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);color:#04140E}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:transparent;border-color:var(--line-strong);color:var(--primary)}
.btn-outline:hover{background:rgba(18,227,166,.08);color:var(--primary);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--text-2);padding:12px 6px}
.btn-ghost:hover{color:var(--primary)}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.4;box-shadow:none;pointer-events:none}

/* ---------- hero ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid rgba(255,255,255,.06)}
.page-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(115deg,rgba(7,11,18,.96) 12%,rgba(7,11,18,.78) 48%,rgba(7,11,18,.95) 100%),url("/assets/images/backpic/back-1.webp");background-size:cover;background-position:center;z-index:0}
.page-hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:34px 34px;z-index:0;mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent)}
.page-hero > .container{position:relative;z-index:2}
.hero-inner{padding:48px 0 52px;max-width:820px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:var(--text-3)}
.crumb .now{color:var(--primary)}
h1{font-size:30px;line-height:1.2;margin-bottom:18px}
h1 .hl{color:var(--primary)}
.hero-lead{color:var(--text-2);font-size:16.5px;max-width:680px;margin-bottom:26px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-facts{display:flex;flex-wrap:wrap;gap:14px 30px;margin-top:30px;padding-top:26px;border-top:1px solid rgba(255,255,255,.07)}
.hero-facts div{display:flex;align-items:baseline;gap:8px;font-size:14px;color:var(--text-2)}
.hero-facts b{font-family:var(--mono);font-size:19px;color:var(--primary);font-weight:600;font-variant-numeric:tabular-nums}

/* ---------- badge / tag ---------- */
.tag{display:inline-flex;align-items:center;gap:7px;padding:5px 13px;border-radius:999px;font-size:12.5px;color:var(--primary);background:rgba(18,227,166,.10);border:1px solid var(--line-strong);white-space:nowrap}
.tag-warn{color:var(--accent);background:rgba(255,154,60,.10);border-color:rgba(255,154,60,.34)}
.tag-plain{color:var(--text-2);background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.10)}

/* ---------- glass card ---------- */
.card{position:relative;background:var(--glass);border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 24px;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);box-shadow:var(--shadow);transition:transform var(--t),border-color var(--t),background var(--t)}
.card::before{content:"";position:absolute;left:18px;right:18px;top:0;height:1px;background:linear-gradient(90deg,transparent,rgba(18,227,166,.55),transparent);opacity:.6;transition:opacity var(--t)}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);background:var(--glass-strong)}
.card:hover::before{opacity:1}
.card h3{font-size:19px;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card p{color:var(--text-2);font-size:14.5px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;margin-top:16px}
.card-link::after{content:"→";transition:transform var(--t)}
.card-link:hover::after{transform:translateX(4px)}
.card-ico{width:44px;height:44px;border-radius:13px;display:flex;align-items:center;justify-content:center;background:rgba(18,227,166,.10);border:1px solid var(--line-strong);color:var(--primary);margin-bottom:18px}
.card-ico svg{width:21px;height:21px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}

/* ---------- intro ---------- */
.intro-block{display:grid;grid-template-columns:1fr;gap:22px}
.intro-text{background:var(--glass);border:1px solid var(--line);border-left:2px solid var(--primary);border-radius:var(--radius-card);padding:26px 26px;backdrop-filter:blur(14px)}
.intro-text p{color:var(--text-2);font-size:15.5px;margin-bottom:14px}
.intro-text p:last-child{margin-bottom:0}
.intro-text strong{color:var(--text);font-weight:600}

/* ---------- grid of cards ---------- */
.card-grid{display:grid;grid-template-columns:1fr;gap:20px}
.card-grid .card{display:flex;flex-direction:column}
.card-grid .card-link{margin-top:auto;padding-top:16px}

/* ---------- checklist ---------- */
.check-list{display:grid;grid-template-columns:1fr;gap:14px}
.check-item{display:flex;gap:14px;padding:18px 20px;border-radius:14px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.07);transition:border-color var(--t),background var(--t)}
.check-item:hover{border-color:var(--line);background:rgba(18,227,166,.05)}
.check-num{flex:none;font-family:var(--mono);font-size:13px;color:var(--primary);padding-top:2px;font-variant-numeric:tabular-nums}
.check-item h4{font-size:15.5px;margin-bottom:6px}
.check-item p{color:var(--text-2);font-size:14px}

/* ---------- split feature ---------- */
.split{display:grid;grid-template-columns:1fr;gap:28px;align-items:center}
.split-media{position:relative;border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow)}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.split-media figcaption{position:absolute;left:0;right:0;bottom:0;padding:16px 18px;font-size:13px;color:var(--text);background:linear-gradient(180deg,transparent,rgba(7,11,18,.92))}
.split-body h2{font-size:25px;margin-bottom:14px}
.split-body p{color:var(--text-2);font-size:15.5px;margin-bottom:16px}
.mini-list{display:grid;gap:12px;margin:20px 0 24px}
.mini-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2)}
.mini-list li::before{content:"";flex:none;width:6px;height:6px;margin-top:11px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px var(--primary)}

/* ---------- faq ---------- */
.faq{display:grid;gap:14px;max-width:900px}
.faq-item{position:relative;background:var(--glass);border:1px solid var(--line);border-radius:16px;backdrop-filter:blur(14px);overflow:hidden;transition:border-color var(--t),background var(--t)}
.faq-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--primary);transform:scaleY(0);transform-origin:top;transition:transform var(--t)}
.faq-item[open]{border-color:var(--line-strong);background:var(--glass-strong)}
.faq-item[open]::before{transform:scaleY(1)}
.faq-item summary{list-style:none;cursor:pointer;padding:20px 58px 20px 24px;font-size:16px;font-weight:600;position:relative}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:24px;top:50%;transform:translateY(-50%);font-family:var(--mono);font-size:20px;color:var(--primary);transition:transform var(--t)}
.faq-item[open] summary::after{content:"−";transform:translateY(-50%) rotate(0deg)}
.faq-body{padding:0 24px 22px;color:var(--text-2);font-size:15px}

/* ---------- cta ---------- */
.cta-band{position:relative;border-radius:22px;border:1px solid var(--line-strong);background:linear-gradient(120deg,rgba(18,227,166,.10),rgba(255,255,255,.03) 46%,rgba(255,154,60,.08));backdrop-filter:blur(16px);padding:34px 26px;display:grid;gap:26px;grid-template-columns:1fr;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:30px 30px;opacity:.6;pointer-events:none}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{font-size:26px;margin-bottom:12px}
.cta-band p{color:var(--text-2);font-size:15px}
.cta-form{display:grid;gap:14px}
.field{display:grid;gap:8px}
.field label{font-size:13.5px;color:var(--text-2)}
.field input{width:100%;padding:13px 15px;border-radius:12px;background:#0C131C;border:1px solid rgba(255,255,255,.10);color:var(--text);font-size:15px;font-family:inherit;transition:border-color var(--t),box-shadow var(--t)}
.field input::placeholder{color:var(--text-3)}
.field input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(18,227,166,.14)}
.cta-note{font-size:12.5px;color:var(--text-3);margin-top:14px}

/* ---------- footer ---------- */
.site-footer{margin-top:40px;border-top:1px solid rgba(255,255,255,.07);background:rgba(8,12,19,.72);backdrop-filter:blur(14px)}
.footer-grid{display:grid;grid-template-columns:1fr;gap:30px;padding:52px 0 34px}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:16px;letter-spacing:1px}
.footer-col p{color:var(--text-2);font-size:14px;margin-top:16px;max-width:340px}
.footer-links{display:grid;gap:11px}
.footer-links a,.footer-links span{color:var(--text-2);font-size:14px}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.07);font-size:13px;color:var(--text-3)}

/* ---------- mobile action bar ---------- */
.mobile-bar{display:none}

/* ---------- responsive ---------- */
@media (min-width:521px){
  h1{font-size:34px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .check-list{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:769px){
  .section{padding:72px 0}
  .hero-inner{padding:64px 0 68px}
  h1{font-size:42px}
  .section-head h2{font-size:28px}
  .split{grid-template-columns:1.05fr .95fr;gap:40px}
  .cta-band{grid-template-columns:1.1fr .9fr;padding:44px 40px;align-items:center}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;padding:64px 0 40px}
}
@media (min-width:1025px){
  .section{padding:96px 0}
  h1{font-size:50px}
  .card-grid{grid-template-columns:repeat(3,1fr)}
  .intro-block{grid-template-columns:1fr}
}
@media (max-width:1024px){
  .nav-menu{gap:4px}
  .nav-link{padding:9px 12px;font-size:14px}
}
@media (max-width:768px){
  body{padding-bottom:56px}
  .nav{min-height:64px;flex-wrap:wrap}
  .nav-toggle{display:block}
  .nav-menu{position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;gap:6px;padding:14px 20px 20px;background:rgba(9,13,21,.98);border-bottom:1px solid var(--line);backdrop-filter:blur(18px);transform:translateY(-12px);opacity:0;pointer-events:none;transition:transform var(--t),opacity var(--t);margin-left:0}
  .nav-menu.is-open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav-link{padding:13px 16px;border-radius:12px;font-size:15px}
  .nav-link.is-active{background:rgba(18,227,166,.10)}
  .nav-actions{margin-left:auto}
  .nav-actions .btn{display:none}
  .mobile-bar{display:flex;position:fixed;left:0;right:0;bottom:0;height:56px;z-index:90;background:rgba(9,13,21,.96);backdrop-filter:blur(16px);border-top:1px solid var(--line);padding:0 14px;align-items:center;gap:10px}
  .mobile-bar .btn{flex:1;padding:11px 14px;font-size:14.5px}
  .mobile-bar .btn-ghost{flex:0 0 auto;border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-btn);padding:11px 16px;color:var(--text-2)}
  .hero-facts{gap:12px 22px}
  .cta-band{padding:28px 20px}
  .card:hover{transform:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}

/* roulang page: article */
:root{
  --bg:#070B12;
  --bg-2:#0C131C;
  --bg-3:#0F1822;
  --glass:rgba(255,255,255,.045);
  --glass-strong:rgba(255,255,255,.075);
  --line:rgba(18,227,166,.16);
  --line-strong:rgba(18,227,166,.30);
  --main:#12E3A6;
  --main-deep:#0FB98A;
  --main-soft:rgba(18,227,166,.10);
  --accent:#FF9A3C;
  --accent-soft:rgba(255,154,60,.12);
  --text:#EAF1F8;
  --muted:#96A6BC;
  --weak:#5F6E85;
  --danger:#FF6B5A;
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --glow:0 0 24px rgba(18,227,166,.32);
  --container:1200px;
  --mono:ui-monospace,"SF Mono","JetBrains Mono",Menlo,Consolas,monospace;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{background:var(--bg);-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:transparent;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:52px 52px;
  pointer-events:none;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--main);text-decoration:none}
a:hover{color:#5FF3C6}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
::selection{background:rgba(18,227,166,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg-2)}
::-webkit-scrollbar-thumb{background:rgba(18,227,166,.22);border-radius:999px;border:2px solid var(--bg-2)}
::-webkit-scrollbar-thumb:hover{background:rgba(18,227,166,.36)}
:focus-visible{outline:2px solid var(--main);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,11,18,.82);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(18,227,166,.12);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;height:70px}
.logo{display:inline-flex;align-items:center;gap:8px;color:var(--text);flex-shrink:0}
.logo-dot{width:6px;height:6px;border-radius:50%;background:var(--main);box-shadow:0 0 10px var(--main);flex-shrink:0}
.logo-main{font-size:19px;font-weight:700;letter-spacing:.01em;color:var(--text)}
.logo-sub{
  font-size:12px;
  line-height:1;
  padding:5px 9px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--main-soft);
  color:var(--main);
  white-space:nowrap;
}
.nav-menu{display:flex;align-items:center;gap:8px}
.nav-link{
  display:inline-flex;
  align-items:center;
  padding:9px 16px;
  border-radius:999px;
  font-size:15px;
  color:var(--muted);
  border:1px solid transparent;
  transition:color .18s ease,background .18s ease,border-color .18s ease,transform .18s ease;
  white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-link.is-active{color:var(--main);border-color:var(--line);background:var(--main-soft)}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  align-items:center;justify-content:center;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:12px;
  cursor:pointer;
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--text);border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
  transition:transform .2s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg);background:var(--main)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg);background:var(--main)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  text-align:center;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease,filter .18s ease;
}
.btn-primary{
  background:linear-gradient(135deg,var(--main),var(--main-deep));
  color:#04150F;
  box-shadow:var(--glow);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 32px rgba(18,227,166,.5);color:#04150F}
.btn-primary:active{transform:translateY(1px)}
.btn-secondary{background:transparent;border-color:var(--line-strong);color:var(--main)}
.btn-secondary:hover{background:rgba(18,227,166,.08);color:#5FF3C6}
.btn-secondary:active{transform:translateY(1px)}
.btn-ghost{background:none;color:var(--text);padding:12px 8px}
.btn-ghost:hover{color:var(--main)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}
.btn:disabled{opacity:.4;box-shadow:none;cursor:not-allowed}

/* ============ 通用 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  font-size:13px;
  line-height:1;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--main-soft);
  color:var(--main);
}
.badge-accent{border-color:rgba(255,154,60,.32);background:var(--accent-soft);color:var(--accent)}
.meta-num{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.dot{width:6px;height:6px;border-radius:50%;background:var(--main);box-shadow:0 0 8px var(--main);display:inline-block}
.section{padding:56px 0}
@media (min-width:768px){.section{padding:72px 0}}
@media (min-width:1024px){.section{padding:96px 0}}
.section-head{max-width:720px;margin-bottom:36px}
.section-head h2{font-size:30px;line-height:1.25;font-weight:700;letter-spacing:-.01em}
.section-head p{margin-top:12px;color:var(--muted);font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--main);font-family:var(--mono);margin-bottom:14px;
}

/* ============ 文章头部 ============ */
.page-hero{
  position:relative;
  padding:40px 0 48px;
  border-bottom:1px solid rgba(18,227,166,.12);
  background:
    linear-gradient(180deg,rgba(7,11,18,.62) 0%,rgba(7,11,18,.94) 78%,var(--bg) 100%),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
}
.page-hero::after{
  content:"";
  position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(18,227,166,.55),transparent);
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--weak);margin-bottom:22px;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--main)}
.breadcrumb .sep{color:#2F3B4C}
.breadcrumb .current{color:var(--muted);max-width:46ch;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.page-hero h1{
  font-size:28px;
  line-height:1.22;
  font-weight:700;
  letter-spacing:-.01em;
  max-width:900px;
  color:var(--text);
}
@media (min-width:768px){.page-hero h1{font-size:38px}}
@media (min-width:1024px){.page-hero h1{font-size:46px}}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:22px;font-size:13px;color:var(--weak);
}
.meta-row .item{display:inline-flex;align-items:center;gap:7px}

/* ============ 正文 ============ */
.article-wrap{padding:44px 0 8px}
.article-shell{max-width:780px;margin:0 auto}
.article-lead{
  padding:18px 22px;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--glass);
  color:var(--muted);
  font-size:15px;
  margin-bottom:32px;
}
.article-lead strong{color:var(--text);font-weight:600}
.article-content{font-size:16px;line-height:1.85;color:#D6E0EC}
.article-content > * + *{margin-top:1.4em}
.article-content h2{
  font-size:24px;line-height:1.35;font-weight:700;color:var(--text);
  padding-left:14px;border-left:3px solid var(--main);
  margin-top:2.1em;
}
.article-content h3{font-size:20px;line-height:1.4;font-weight:600;color:var(--text);margin-top:1.7em}
.article-content h4{font-size:17px;font-weight:600;color:var(--text);margin-top:1.4em}
.article-content p{color:#CBD6E3}
.article-content strong{color:var(--text);font-weight:600}
.article-content ul,.article-content ol{padding-left:1.3em}
.article-content ul li{position:relative;padding-left:4px;margin:.55em 0}
.article-content ul li::marker{color:var(--main)}
.article-content ol{list-style:decimal}
.article-content ol li{margin:.55em 0}
.article-content ol li::marker{color:var(--main);font-family:var(--mono)}
.article-content a{color:var(--main);text-decoration:underline;text-decoration-color:rgba(18,227,166,.4);text-underline-offset:3px}
.article-content a:hover{text-decoration-color:var(--main)}
.article-content blockquote{
  margin:1.6em 0;
  padding:16px 22px;
  border-left:3px solid var(--accent);
  border-radius:0 12px 12px 0;
  background:linear-gradient(90deg,rgba(255,154,60,.10),rgba(255,154,60,0));
  color:#D8E2EE;
}
.article-content blockquote p{color:#D8E2EE}
.article-content img{border-radius:var(--radius-img);border:1px solid var(--line);margin:1.6em auto;max-width:100%;height:auto}
.article-content figure{margin:1.8em 0}
.article-content figcaption{font-size:13px;color:var(--weak);text-align:center;margin-top:10px}
.article-content table{
  display:block;width:100%;overflow-x:auto;border-collapse:collapse;
  font-size:15px;border:1px solid rgba(255,255,255,.08);border-radius:12px;
}
.article-content th,.article-content td{padding:12px 16px;border-bottom:1px solid rgba(255,255,255,.07);text-align:left;white-space:nowrap}
.article-content thead th{background:rgba(18,227,166,.08);color:var(--main);font-weight:600}
.article-content tbody tr:nth-child(even){background:rgba(255,255,255,.03)}
.article-content code{
  font-family:var(--mono);font-size:14px;padding:2px 6px;border-radius:6px;
  background:rgba(18,227,166,.10);color:#8FF3D5;
}
.article-content pre{
  background:var(--bg-2);border:1px solid var(--line);border-radius:12px;
  padding:16px 18px;overflow-x:auto;
}
.article-content pre code{background:none;padding:0;color:#C8F7E8}
.article-content hr{border:none;border-top:1px solid rgba(255,255,255,.09);margin:2em 0}
.article-empty{
  padding:48px 24px;text-align:center;
  border:1px dashed var(--line);border-radius:var(--radius-card);background:var(--glass);
}
.article-empty .icon{
  width:52px;height:52px;margin:0 auto 18px;border-radius:14px;
  border:1px solid var(--line);background:var(--bg-2);
  display:flex;align-items:center;justify-content:center;
  color:var(--main);font-family:var(--mono);font-size:20px;font-weight:700;
}
.article-empty h2{font-size:20px;font-weight:600;color:var(--text)}
.article-empty p{margin:10px 0 22px;color:var(--muted);font-size:15px}

/* ============ 上/下一篇 ============ */
.post-nav{display:grid;gap:16px;margin:56px 0 0}
@media (min-width:768px){.post-nav{grid-template-columns:1fr 1fr}}
.post-card{
  display:block;
  padding:20px 22px;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--glass);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  position:relative;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.post-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(18,227,166,.45),transparent);
  opacity:.7;transition:opacity .2s ease;
}
.post-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow)}
.post-card:hover::before{opacity:1}
.post-card .label{font-size:13px;color:var(--weak);font-family:var(--mono);letter-spacing:.04em}
.post-card h3{margin-top:10px;font-size:17px;font-weight:600;color:var(--text);line-height:1.5}
.post-card p{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.7}
.back-cat{display:inline-flex;align-items:center;gap:8px;margin-top:22px;color:var(--main);font-size:15px}
.back-cat:hover{gap:12px;transition:gap .2s ease}

/* ============ 相关推荐 ============ */
.related-list{display:grid;gap:20px}
@media (min-width:768px){.related-list{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.related-list{grid-template-columns:repeat(3,1fr)}}
.rel-card{
  display:flex;gap:14px;
  padding:14px;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--glass);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.rel-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow)}
.rel-card .thumb{
  width:96px;height:96px;flex:0 0 96px;
  border-radius:var(--radius-img);overflow:hidden;
  background:var(--bg-2);border:1px solid rgba(255,255,255,.06);
}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover}
.rel-card .body{min-width:0;display:flex;flex-direction:column}
.rel-card h3{
  font-size:15px;font-weight:600;line-height:1.5;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-card p{
  margin-top:6px;font-size:13px;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-card .time{margin-top:auto;padding-top:10px;font-size:12px;color:var(--weak);font-family:var(--mono)}

/* ============ CTA ============ */
.cta-band{
  margin:0;
  padding:32px 24px;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:
    linear-gradient(120deg,rgba(18,227,166,.10),rgba(12,19,28,.9) 55%),
    var(--glass);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  display:grid;
  gap:26px;
}
@media (min-width:1024px){.cta-band{grid-template-columns:1fr 1fr;align-items:center;padding:44px 40px}}
.cta-band h2{font-size:26px;line-height:1.3;font-weight:700}
@media (min-width:768px){.cta-band h2{font-size:30px}}
.cta-band .sub{margin-top:12px;color:var(--muted);font-size:15px;max-width:44ch}
.form-grid{display:grid;gap:14px}
@media (min-width:640px){.form-grid{grid-template-columns:1fr 1fr}}
.field{display:flex;flex-direction:column;gap:8px}
.field label{font-size:13px;color:var(--muted)}
.field input,.field select{
  width:100%;
  padding:12px 14px;
  border-radius:12px;
  background:var(--bg-2);
  border:1px solid rgba(255,255,255,.10);
  color:var(--text);
  font-size:15px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field input::placeholder{color:#4C5A70}
.field input:focus,.field select:focus{outline:none;border-color:var(--main);box-shadow:0 0 0 3px rgba(18,227,166,.16)}
.form-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:6px}
.form-hint{font-size:13px;color:var(--weak)}
.form-ok{font-size:13px;color:var(--main);display:none}
.form-ok.show{display:inline-flex;align-items:center;gap:6px}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:64px;
  border-top:1px solid rgba(18,227,166,.12);
  background:linear-gradient(180deg,rgba(12,19,28,.5),var(--bg));
  padding:52px 0 26px;
}
.footer-grid{display:grid;gap:32px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}}
.footer-col h4{font-size:14px;color:var(--text);font-weight:600;margin-bottom:16px;letter-spacing:.02em}
.footer-col p{margin-top:16px;font-size:14px;color:var(--muted);line-height:1.8;max-width:36ch}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a,.footer-links span{font-size:14px;color:var(--muted)}
.footer-links a:hover{color:var(--main)}
.footer-links .meta-num{font-size:13px;color:var(--weak)}
.footer-bottom{
  margin-top:40px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.07);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--weak);
}
.footer-bottom .mono{font-family:var(--mono)}

/* ============ 图片占位 ============ */
.img-ph{
  display:flex;align-items:center;justify-content:center;
  width:100%;height:100%;min-height:96px;
  background:var(--bg-2);
  border:1px dashed var(--line-strong);
  border-radius:var(--radius-img);
  color:var(--main);
  font-family:var(--mono);font-size:18px;font-weight:700;
}

/* ============ 移动端底部动作条 ============ */
.mobile-bar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  height:56px;
  padding:0 14px;
  gap:10px;
  align-items:center;
  background:rgba(7,11,18,.94);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-top:1px solid rgba(18,227,166,.18);
}
.mobile-bar .btn{flex:1;height:40px;padding:0 12px;font-size:14px}

@media (max-width:768px){
  .nav-menu{
    position:fixed;
    left:0;right:0;top:70px;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    padding:16px 20px 22px;
    background:rgba(9,14,22,.98);
    border-bottom:1px solid var(--line);
    box-shadow:0 24px 40px rgba(0,0,0,.55);
  }
  .nav-menu.is-open{display:flex}
  .nav-link{padding:13px 16px;font-size:16px;border:1px solid rgba(255,255,255,.06);background:rgba(255,255,255,.02)}
  .nav-toggle{display:inline-flex}
  .nav-actions .btn-sm{display:none}
  .mobile-bar{display:flex}
  .site-footer{padding-bottom:80px}
  .page-hero{padding:30px 0 36px}
  .article-wrap{padding:32px 0 0}
  .section-head h2{font-size:24px}
  .cta-band h2{font-size:22px}
}
@media (max-width:520px){
  .rel-card .thumb{width:78px;height:78px;flex:0 0 78px}
  .breadcrumb{font-size:13px}
  .breadcrumb .current{max-width:26ch}
  .form-actions .btn{width:100%}
}
@media (hover:none){
  .post-card:hover,.rel-card:hover{transform:none}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}

/* roulang page: category2 */
:root{
  --bg:#070B12;
  --bg-2:#0C131C;
  --primary:#12E3A6;
  --primary-deep:#0FB98A;
  --accent:#FF9A3C;
  --text:#EAF1F8;
  --text-2:#96A6BC;
  --text-3:#5F6E85;
  --line:rgba(18,227,166,.16);
  --line-strong:rgba(18,227,166,.28);
  --glass:rgba(255,255,255,.045);
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:14px;
  --radius-input:12px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --glow:0 0 24px rgba(18,227,166,.32);
  --container:1200px;
  --gap:24px;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",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:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  letter-spacing:.01em;
  overflow-x:hidden;
  padding-bottom:0;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:48px 48px;
  opacity:.55;
}

img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,opacity .18s ease}
a:hover{color:#5BF3C5}
button{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700}
p{margin:0}
input{font-family:inherit}

.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.01em}
.meta-num{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--text-2);font-size:14px}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
  position:relative;
  z-index:1;
}

/* ============ header / nav ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,11,18,.86);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.nav{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:72px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:9px;
  color:var(--text);
  font-weight:700;
  text-decoration:none;
  flex:0 0 auto;
}
.logo:hover{color:var(--text)}
.logo-dot{
  width:10px;height:10px;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 12px rgba(18,227,166,.85);
  flex:0 0 auto;
}
.logo-main{font-size:19px;letter-spacing:.02em}
.logo-sub{
  font-size:12px;
  font-weight:400;
  color:var(--text-2);
  border-left:1px solid var(--line-strong);
  padding-left:9px;
  letter-spacing:.06em;
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:8px;
  margin-left:28px;
}
.nav-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:9px 16px;
  border-radius:999px;
  font-size:15px;
  color:var(--text-2);
  border:1px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
  white-space:nowrap;
}
.nav-menu .nav-link[data-slug]{
  border-color:var(--line);
  background:rgba(18,227,166,.04);
}
.nav-link:hover{
  color:var(--text);
  background:rgba(18,227,166,.09);
  border-color:var(--line-strong);
}
.nav-link.is-active{
  color:var(--primary);
  background:rgba(18,227,166,.12);
  border-color:var(--line-strong);
  box-shadow:inset 0 0 0 1px rgba(18,227,166,.12);
}
.nav-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:12px;
}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:12px;
  border:1px solid var(--line-strong);
  background:rgba(18,227,166,.06);
  cursor:pointer;
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;
  left:50%;
  width:18px;height:2px;
  background:var(--text);
  border-radius:2px;
  transform:translateX(-50%);
  transition:transform .22s ease,opacity .22s ease,background .22s ease;
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{content:"";left:0;top:-6px;transform:none}
.nav-toggle span::after{content:"";left:0;top:6px;transform:none}
.nav-toggle[aria-expanded="true"] span{background:var(--primary)}
.nav-toggle[aria-expanded="true"] span::before{transform:rotate(45deg);top:0}
.nav-toggle[aria-expanded="true"] span::after{transform:rotate(-45deg);top:0}

/* ============ buttons ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  padding:13px 24px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  cursor:pointer;
  text-decoration:none;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,filter .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#12E3A6,#0FB98A);
  color:#04140E;
  box-shadow:var(--glow);
}
.btn-primary:hover{color:#04140E;filter:brightness(1.08);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-ghost:hover{background:rgba(18,227,166,.08);color:var(--primary);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-link{
  padding:6px 0;
  color:var(--primary);
  background:none;
  border:none;
}
.btn-link::after{content:"→";margin-left:6px;transition:transform .18s ease;display:inline-block}
.btn-link:hover::after{transform:translateX(4px)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn:focus-visible,
.nav-link:focus-visible,
.nav-toggle:focus-visible,
.faq-q:focus-visible,
input:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
}
.btn[disabled]{opacity:.4;box-shadow:none;cursor:not-allowed}

/* ============ badges / tags ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  font-size:13px;
  line-height:1.6;
  color:var(--primary);
  border:1px solid var(--line-strong);
  background:rgba(18,227,166,.10);
  white-space:nowrap;
}
.badge-warn{
  color:var(--accent);
  border-color:rgba(255,154,60,.35);
  background:rgba(255,154,60,.10);
}
.dot-6{
  width:6px;height:6px;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 8px rgba(18,227,166,.8);
  flex:0 0 auto;
}
.dot-6.warn{background:var(--accent);box-shadow:0 0 8px rgba(255,154,60,.8)}

/* ============ breadcrumb ============ */
.breadcrumb{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:var(--text-3);
  padding:22px 0 0;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--text-3)}
.breadcrumb .current{
  color:var(--text);
  max-width:60%;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

/* ============ hero ============ */
.page-hero{
  position:relative;
  padding:64px 0 76px;
  background:
    linear-gradient(105deg,rgba(7,11,18,.96) 0%,rgba(7,11,18,.86) 45%,rgba(7,11,18,.62) 100%),
    url(/assets/images/backpic/back-2.png) center/cover no-repeat,
    #070B12;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-160px;
  top:-120px;
  width:480px;height:480px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(18,227,166,.16),transparent 68%);
  pointer-events:none;
}
.hero-inner{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:56px;
  align-items:center;
}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--text-2);
  letter-spacing:.1em;
  margin-bottom:22px;
}
.hero-title{
  font-size:50px;
  line-height:1.15;
  letter-spacing:-.01em;
  margin-bottom:20px;
}
.hero-title .hl{
  color:var(--primary);
  text-shadow:0 0 26px rgba(18,227,166,.35);
}
.hero-sub{
  font-size:17px;
  color:var(--text-2);
  max-width:560px;
  margin-bottom:30px;
}
.hero-actions{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
  margin-bottom:34px;
}
.hero-points{
  display:flex;
  gap:26px;
  flex-wrap:wrap;
  padding-top:24px;
  border-top:1px solid var(--line);
}
.hero-point{
  display:flex;
  align-items:center;
  gap:9px;
  font-size:14px;
  color:var(--text-2);
}
.hero-visual{
  position:relative;
}
.hero-visual img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--radius-card);
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
}
.hero-visual::before{
  content:"";
  position:absolute;
  inset:14px -14px -14px 14px;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  pointer-events:none;
  z-index:-1;
}
.hero-visual .float-chip{
  position:absolute;
  left:-16px;
  bottom:22px;
  display:flex;
  align-items:center;
  gap:10px;
  padding:12px 18px;
  border-radius:14px;
  background:rgba(12,19,28,.92);
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
  font-size:13px;
  color:var(--text-2);
  backdrop-filter:blur(12px);
}
.hero-visual .float-chip strong{
  font-family:var(--mono);
  color:var(--primary);
  font-size:16px;
  font-weight:600;
}

/* ============ sections ============ */
.section{padding:96px 0}
.section-alt{
  background:linear-gradient(180deg,rgba(12,19,28,.72),rgba(7,11,18,.2));
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.section-head{
  max-width:720px;
  margin-bottom:48px;
}
.section-head .kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--mono);
  font-size:13px;
  color:var(--primary);
  letter-spacing:.16em;
  margin-bottom:16px;
  text-transform:uppercase;
}
.section-title{
  font-size:30px;
  margin-bottom:16px;
}
.section-desc{
  color:var(--text-2);
  font-size:16px;
}
.section-head-row{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:48px;
}
.section-head-row .section-head{margin-bottom:0}

/* ============ stat strip ============ */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:var(--gap);
}
.stat-item{
  position:relative;
  padding:26px 24px 24px;
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  overflow:hidden;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.stat-item::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(18,227,166,.6),transparent);
  opacity:.55;
  transition:opacity .22s ease;
}
.stat-item:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow);
}
.stat-item:hover::before{opacity:1}
.stat-label{
  font-size:14px;
  color:var(--text-2);
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:14px;
}
.stat-value{
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
  font-size:32px;
  font-weight:600;
  color:var(--text);
  line-height:1.1;
  margin-bottom:16px;
}
.stat-value em{
  font-style:normal;
  font-size:14px;
  color:var(--text-3);
  margin-left:6px;
}
.stat-bar{
  height:4px;
  border-radius:4px;
  background:rgba(255,255,255,.08);
  overflow:hidden;
  margin-bottom:14px;
}
.stat-bar i{
  display:block;
  height:100%;
  border-radius:4px;
  background:linear-gradient(90deg,var(--primary),#4CF0C0);
}
.stat-bar.orange i{background:linear-gradient(90deg,var(--accent),#FFC38A)}
.stat-foot{font-size:13px;color:var(--text-3)}

/* ============ timeline ============ */
.timeline{
  position:relative;
  padding-left:64px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:31px;
  top:10px;
  bottom:10px;
  width:1px;
  background:linear-gradient(180deg,transparent,var(--primary) 8%,rgba(18,227,166,.35) 70%,transparent);
}
.tl-item{
  position:relative;
  margin-bottom:32px;
}
.tl-item:last-child{margin-bottom:0}
.tl-item::before{
  content:"";
  position:absolute;
  left:-38px;
  top:26px;
  width:12px;height:12px;
  border-radius:50%;
  background:var(--bg);
  border:2px solid var(--primary);
  box-shadow:0 0 0 4px rgba(18,227,166,.10),0 0 14px rgba(18,227,166,.45);
  z-index:2;
}
.tl-item:nth-child(even) .tl-card{margin-left:56px}
.tl-card{
  position:relative;
  padding:28px 30px;
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
  overflow:hidden;
}
.tl-card::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(18,227,166,.55),transparent);
  opacity:.5;
  transition:opacity .22s ease;
}
.tl-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow);
}
.tl-card:hover::before{opacity:1}
.tl-head{
  display:flex;
  align-items:center;
  gap:14px;
  flex-wrap:wrap;
  margin-bottom:14px;
}
.tl-num{
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
  font-size:22px;
  font-weight:600;
  color:var(--primary);
  letter-spacing:.04em;
}
.tl-title{font-size:20px}
.tl-card p{color:var(--text-2)}
.tl-card p + p{margin-top:.7em}
.tl-tip{
  margin-top:16px;
  display:flex;
  align-items:flex-start;
  gap:10px;
  padding:12px 16px;
  border-radius:12px;
  background:rgba(18,227,166,.07);
  border:1px solid var(--line);
  font-size:14px;
  color:var(--text-2);
}
.tl-tip.orange{
  background:rgba(255,154,60,.08);
  border-color:rgba(255,154,60,.28);
}
.tl-media{
  margin-top:20px;
}
.tl-media img{
  width:100%;
  aspect-ratio:16/7;
  object-fit:cover;
  border:1px solid var(--line);
}
.tl-media figcaption{
  margin-top:10px;
  font-size:13px;
  color:var(--text-3);
}
.tl-sub{
  margin-top:16px;
  display:grid;
  gap:8px;
}
.tl-sub li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:14px;
  color:var(--text-2);
}
.tl-sub li::before{
  content:"";
  width:6px;height:6px;
  margin-top:9px;
  border-radius:50%;
  background:var(--primary);
  flex:0 0 auto;
  opacity:.75;
}

/* ============ signal list ============ */
.signal-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:var(--gap);
}
.signal-item{
  display:flex;
  gap:18px;
  padding:24px;
  border-radius:var(--radius-card);
  background:rgba(12,19,28,.72);
  border:1px solid var(--line);
  transition:transform .22s ease,border-color .22s ease,background .22s ease;
}
.signal-item:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  background:rgba(12,19,28,.92);
}
.signal-icon{
  flex:0 0 auto;
  width:42px;height:42px;
  border-radius:12px;
  display:grid;
  place-items:center;
  font-family:var(--mono);
  font-size:16px;
  font-weight:600;
  color:var(--accent);
  background:rgba(255,154,60,.10);
  border:1px solid rgba(255,154,60,.28);
}
.signal-body h3{
  font-size:17px;
  margin-bottom:8px;
}
.signal-body p{
  font-size:14px;
  color:var(--text-2);
}

/* ============ steps quick ============ */
.quick-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:var(--gap);
}
.quick-card{
  padding:26px 24px;
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--line);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.quick-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow);
}
.quick-card h3{font-size:18px;margin-bottom:10px}
.quick-card p{font-size:14px;color:var(--text-2)}

/* ============ faq ============ */
.faq-list{
  display:grid;
  gap:14px;
  max-width:880px;
}
.faq-item{
  position:relative;
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  overflow:hidden;
  transition:border-color .22s ease,background .22s ease;
}
.faq-item::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:2px;
  background:var(--primary);
  opacity:0;
  transition:opacity .24s ease;
}
.faq-item.is-open{border-color:var(--line-strong);background:rgba(255,255,255,.06)}
.faq-item.is-open::before{opacity:1}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:20px 24px;
  background:none;
  border:none;
  color:var(--text);
  font-size:17px;
  font-weight:600;
  text-align:left;
  cursor:pointer;
}
.faq-q .sign{
  flex:0 0 auto;
  width:26px;height:26px;
  border-radius:50%;
  border:1px solid var(--line-strong);
  color:var(--primary);
  display:grid;
  place-items:center;
  font-size:16px;
  line-height:1;
  transition:transform .24s ease,background .24s ease;
}
.faq-item.is-open .faq-q .sign{
  transform:rotate(45deg);
  background:rgba(18,227,166,.14);
}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a p{
  padding:0 24px 22px;
  color:var(--text-2);
  font-size:15px;
}

/* ============ cta band ============ */
.cta-band{
  position:relative;
  border-radius:24px;
  padding:48px;
  background:
    linear-gradient(110deg,rgba(18,227,166,.12),rgba(12,19,28,.9) 55%),
    url(/assets/images/backpic/back-3.webp) center/cover no-repeat,
    #0C131C;
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.cta-inner{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:40px;
  align-items:center;
}
.cta-title{
  font-size:28px;
  margin-bottom:14px;
}
.cta-desc{
  color:var(--text-2);
  font-size:15px;
  max-width:520px;
  margin-bottom:24px;
}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.cta-form{
  background:rgba(7,11,18,.66);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px;
  backdrop-filter:blur(14px);
}
.field{margin-bottom:16px}
.field label{
  display:block;
  font-size:13px;
  color:var(--text-2);
  margin-bottom:8px;
}
.field input{
  width:100%;
  padding:12px 14px;
  font-size:15px;
  color:var(--text);
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--radius-input);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder{color:var(--text-3)}
.field input:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(18,227,166,.16),0 0 18px rgba(18,227,166,.18);
}
.field .hint{font-size:12px;color:var(--text-3);margin-top:6px}
.cta-form .btn{width:100%}
.cta-note{
  font-size:12px;
  color:var(--text-3);
  margin-top:12px;
  line-height:1.7;
}

/* ============ footer ============ */
.site-footer{
  position:relative;
  z-index:1;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(12,19,28,.85),rgba(7,11,18,1));
  padding:64px 0 28px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:40px;
}
.footer-col .logo{margin-bottom:18px}
.footer-col p{
  font-size:14px;
  color:var(--text-2);
  max-width:330px;
}
.footer-col h4{
  font-size:15px;
  margin-bottom:18px;
  color:var(--text);
}
.footer-links{display:grid;gap:12px}
.footer-links a{
  font-size:14px;
  color:var(--text-2);
}
.footer-links a:hover{color:var(--primary)}
.footer-links .meta-num{font-size:13px}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:24px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}

/* ============ mobile action bar ============ */
.mobile-bar{
  position:fixed;
  left:0;right:0;bottom:0;
  height:56px;
  display:none;
  align-items:center;
  gap:10px;
  padding:0 14px;
  background:rgba(7,11,18,.96);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-top:1px solid var(--line-strong);
  z-index:80;
}
.mobile-bar .btn{flex:1;padding:11px 14px;font-size:14px}

/* ============ responsive ============ */
@media (max-width:1200px){
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .hero-title{font-size:44px}
}

@media (max-width:1024px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-visual{max-width:560px}
  .hero-title{font-size:40px}
  .quick-grid{grid-template-columns:repeat(2,1fr)}
  .signal-grid{grid-template-columns:1fr}
  .cta-inner{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}

@media (max-width:768px){
  body{padding-bottom:56px}
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
  .section-head-row{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px}
  .section-title{font-size:24px}
  .hero-title{font-size:30px}
  .hero-sub{font-size:15px}
  .page-hero{padding:40px 0 56px}
  .breadcrumb{padding-top:16px}
  .breadcrumb .current{max-width:48%}

  .nav-menu{
    position:absolute;
    top:100%;
    left:0;right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:8px;
    margin:0;
    padding:16px 20px 22px;
    background:rgba(7,11,18,.98);
    border-bottom:1px solid var(--line-strong);
    backdrop-filter:blur(18px);
  }
  .nav-menu.is-open{display:flex}
  .nav-link{padding:13px 16px;font-size:15px;border-radius:12px}
  .nav-toggle{display:block}
  .nav-actions .btn-sm{padding:9px 14px;font-size:13px}
  .logo-sub{display:none}
  .logo-main{font-size:17px}

  .stat-strip{grid-template-columns:1fr;gap:14px}
  .quick-grid{grid-template-columns:1fr;gap:14px}
  .stat-value{font-size:26px}

  .timeline{padding-left:44px}
  .timeline::before{left:15px;top:6px;bottom:6px}
  .tl-item::before{left:-34px;top:22px}
  .tl-item:nth-child(even) .tl-card{margin-left:0}
  .tl-card{padding:22px 20px}
  .tl-title{font-size:18px}
  .tl-num{font-size:19px}

  .cta-band{padding:28px 20px;border-radius:18px}
  .cta-title{font-size:22px}
  .hero-points{gap:16px;padding-top:20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-col p{max-width:none}
  .mobile-bar{display:flex}
}

@media (max-width:520px){
  .hero-title{font-size:26px}
  .hero-actions .btn{flex:1;justify-content:center}
  .stat-item{padding:22px 18px}
  .faq-q{font-size:16px;padding:18px 18px}
  .faq-a p{padding:0 18px 20px}
  .signal-item{padding:20px 18px;gap:14px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}