/* roulang page: index */
:root{
  --bg-base:#04070E;
  --bg-1:#0A1322;
  --bg-2:#101C30;
  --glass:rgba(255,255,255,.055);
  --glass-line:rgba(120,200,255,.16);
  --primary:#1FD8C9;
  --primary-2:#38E9DA;
  --secondary:#5A6BFF;
  --accent:#FFC46B;
  --danger:#FF6B6B;
  --text-1:#E8F2FF;
  --text-2:#94AAC6;
  --text-3:#5C7290;
  --r-card:18px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(0,0,0,.38);
  --sh-2:0 20px 48px rgba(0,0,0,.5);
  --glow:0 0 0 1px rgba(31,216,201,.35),0 8px 28px rgba(31,216,201,.28);
  --max:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:-.5px;line-height:1.25;font-weight:600;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
::selection{background:rgba(31,216,201,.3);}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#060B14;}
::-webkit-scrollbar-thumb{background:rgba(31,216,201,.28);border-radius:999px;border:2px solid #060B14;}
::-webkit-scrollbar-thumb:hover{background:rgba(31,216,201,.45);}

.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px;}
.section{padding:96px 0;position:relative;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.section-title{font-size:34px;color:var(--text-1);}
.section-sub{margin-top:12px;color:var(--text-2);font-size:15px;max-width:640px;}
.text-link{color:var(--primary);font-size:14px;position:relative;display:inline-flex;align-items:center;gap:6px;white-space:nowrap;}
.text-link::after{content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;background:var(--primary);transition:width .3s var(--ease);}
.text-link:hover::after{width:100%;}

.grid-bg{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(120,200,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(120,200,255,.04) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse at 50% 0%,#000 10%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse at 50% 0%,#000 10%,transparent 78%);
}

/* ---------- header ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:80;padding:18px 0;transition:padding .28s var(--ease);}
.nav-inner{
  max-width:1100px;margin:0 auto;padding:0 20px;height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  border:1px solid transparent;border-radius:var(--r-pill);
  transition:height .28s var(--ease),background .28s var(--ease),border-color .28s var(--ease),backdrop-filter .28s var(--ease),box-shadow .28s var(--ease);
}
.site-header.is-scrolled{padding:10px 0;}
.site-header.is-scrolled .nav-inner{
  height:52px;
  background:rgba(10,19,34,.72);
  border-color:var(--glass-line);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.07);
}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{width:26px;height:26px;color:var(--primary);filter:drop-shadow(0 0 10px rgba(31,216,201,.45));}
.logo-text{font-size:17px;font-weight:600;letter-spacing:-.3px;color:var(--text-1);}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;padding:9px 14px;font-size:14.5px;color:var(--text-2);border-radius:var(--r-pill);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--text-1);background:rgba(31,216,201,.08);}
.nav-link.is-active{color:var(--primary);background:rgba(31,216,201,.12);}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:22px;height:2px;border-radius:2px;background:var(--primary);box-shadow:0 0 10px rgba(31,216,201,.9);
}
.nav-actions{display:flex;align-items:center;gap:10px;}
.burger{display:none;width:42px;height:42px;border:1px solid var(--glass-line);background:var(--glass);border-radius:12px;cursor:pointer;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:4px;}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);transition:transform .24s var(--ease),opacity .24s var(--ease);}
.burger.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.burger.is-open span:nth-child(2){opacity:0;}
.burger.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.drawer{
  position:fixed;inset:0;z-index:79;background:rgba(4,7,14,.94);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  padding:110px 24px 32px;display:flex;flex-direction:column;gap:8px;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
}
.drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer a.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;padding:0 16px;border-radius:14px;border:1px solid var(--glass-line);
  background:var(--glass);font-size:15.5px;color:var(--text-1);
}
.drawer a.drawer-link span.arrow{color:var(--text-3);}
.drawer-cta{margin-top:auto;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:var(--r-btn);
  padding:13px 24px;font-size:15px;font-weight:600;cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),opacity .18s var(--ease);
  white-space:nowrap;
}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:10px;}
.btn-primary{background:linear-gradient(120deg,var(--primary),var(--secondary));color:#04211F;box-shadow:var(--glow);}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 0 1px rgba(31,216,201,.5),0 14px 36px rgba(31,216,201,.42);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(31,216,201,.35),0 4px 14px rgba(31,216,201,.24);}
.btn-ghost{background:var(--glass);border-color:var(--glass-line);color:var(--text-1);backdrop-filter:blur(12px);}
.btn-ghost:hover{border-color:rgba(31,216,201,.5);background:rgba(255,255,255,.09);transform:translateY(-2px);}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.btn[disabled]{opacity:.4;cursor:not-allowed;box-shadow:none;transform:none;}

/* ---------- hero ---------- */
.hero{position:relative;padding:170px 0 96px;overflow:hidden;}
.hero::before{
  content:"";position:absolute;top:-260px;left:-180px;width:720px;height:720px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,216,201,.20),transparent 66%);pointer-events:none;
}
.hero::after{
  content:"";position:absolute;bottom:-320px;right:-200px;width:760px;height:760px;border-radius:50%;
  background:radial-gradient(circle,rgba(90,107,255,.20),transparent 66%);pointer-events:none;
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.25fr 1fr;gap:56px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:var(--r-pill);
  background:rgba(31,216,201,.12);border:1px solid var(--glass-line);color:var(--primary);
  font-size:12.5px;letter-spacing:.4px;margin-bottom:22px;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px var(--primary);}
.hero h1{font-size:52px;line-height:1.15;font-weight:700;letter-spacing:-1px;}
.hero h1 em{font-style:normal;color:var(--primary);}
.hero-lead{margin-top:20px;font-size:17px;color:var(--text-2);max-width:520px;}
.hero-actions{margin-top:34px;display:flex;flex-wrap:wrap;gap:14px;}
.hero-stats{margin-top:44px;display:flex;flex-wrap:wrap;gap:32px;}
.hero-stat b{display:block;font-size:22px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--text-1);}
.hero-stat span{font-size:13px;color:var(--text-3);}

.hero-panel{
  position:relative;border-radius:22px;border:1px solid var(--glass-line);
  background:linear-gradient(160deg,rgba(16,28,48,.9),rgba(6,12,22,.9));
  box-shadow:var(--sh-2);overflow:hidden;min-height:400px;
}
.hero-panel-img{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:.55;
}
.hero-panel-mask{position:absolute;inset:0;background:linear-gradient(160deg,rgba(31,216,201,.20),rgba(4,7,14,.86));}
.hero-panel-body{position:relative;z-index:2;padding:30px;display:flex;flex-direction:column;gap:16px;height:100%;}
.panel-title{font-size:15px;color:var(--text-2);letter-spacing:.5px;}
.panel-row{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-radius:14px;background:rgba(255,255,255,.06);border:1px solid var(--glass-line);font-size:14px;}
.panel-row .dot{width:8px;height:8px;border-radius:50%;background:var(--primary);box-shadow:0 0 12px var(--primary);}
.panel-row .ok{color:var(--primary);font-size:13px;}
.corner{position:absolute;width:24px;height:24px;border:1px solid rgba(31,216,201,.55);z-index:3;}
.corner.tl{top:14px;left:14px;border-right:0;border-bottom:0;}
.corner.tr{top:14px;right:14px;border-left:0;border-bottom:0;}
.corner.bl{bottom:14px;left:14px;border-right:0;border-top:0;}
.corner.br{bottom:14px;right:14px;border-left:0;border-top:0;}
.mini-card{
  position:absolute;z-index:4;padding:12px 16px;border-radius:14px;
  background:rgba(10,19,34,.82);border:1px solid var(--glass-line);
  backdrop-filter:blur(14px);box-shadow:var(--sh-1);
}
.mini-card b{display:block;font-size:19px;font-variant-numeric:tabular-nums;color:var(--primary);text-shadow:0 0 24px rgba(31,216,201,.35);}
.mini-card span{font-size:12px;color:var(--text-3);}
.mini-a{top:64px;right:-16px;}
.mini-b{bottom:52px;left:-16px;}

/* ---------- kpi ---------- */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.kpi-card{
  position:relative;padding:26px;border-radius:var(--r-card);border:1px solid var(--glass-line);
  background:var(--glass);backdrop-filter:blur(18px);box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.07);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.kpi-card:hover{transform:translateY(-4px);border-color:rgba(31,216,201,.4);}
.kpi-value{font-size:48px;font-weight:700;line-height:1.05;font-variant-numeric:tabular-nums;color:var(--primary);text-shadow:0 0 24px rgba(31,216,201,.35);}
.kpi-label{margin-top:10px;font-size:13px;color:var(--text-2);}
.kpi-badge{
  position:absolute;top:20px;right:20px;padding:4px 10px;border-radius:var(--r-pill);font-size:12px;
  background:rgba(31,216,201,.14);color:var(--primary);
}
.kpi-badge.warn{background:rgba(255,196,107,.14);color:var(--accent);}

/* ---------- bento ---------- */
.bento{display:grid;grid-template-columns:repeat(3,1fr);grid-auto-rows:minmax(178px,auto);gap:20px;}
.bento-card{
  position:relative;padding:28px;border-radius:var(--r-card);border:1px solid var(--glass-line);
  background:linear-gradient(150deg,rgba(16,28,48,.86),rgba(6,12,22,.8));
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.07);
  display:flex;flex-direction:column;gap:12px;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
  overflow:hidden;
}
.bento-card:hover{transform:translateY(-4px);border-color:rgba(31,216,201,.42);box-shadow:var(--sh-2);}
.bento-card.large{grid-column:span 2;grid-row:span 2;justify-content:flex-end;}
.bento-card.large .bento-img{
  position:absolute;inset:0;background:url('/assets/images/coverpic/cover-2.png') center/cover no-repeat;opacity:.3;
}
.bento-card.large::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(4,7,14,.3),rgba(4,7,14,.92));}
.bento-card.large>*{position:relative;z-index:2;}
.icon-box{
  width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(31,216,201,.12);border:1px solid var(--glass-line);color:var(--primary);
}
.icon-box svg{width:20px;height:20px;}
.bento-card h3{font-size:22px;color:var(--text-1);}
.bento-card p{font-size:14.5px;color:var(--text-2);line-height:1.7;}

/* ---------- compare ---------- */
.compare{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:28px;}
.compare-divider{
  position:absolute;left:50%;top:12px;bottom:12px;width:1px;transform:translateX(-50%);
  background:linear-gradient(180deg,transparent,rgba(31,216,201,.5),transparent);
}
.vs-badge{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);z-index:3;
  width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:var(--bg-1);border:1px solid rgba(31,216,201,.5);color:var(--primary);font-size:13px;font-weight:700;
  box-shadow:0 0 22px rgba(31,216,201,.32);
}
.compare-card{padding:32px;border-radius:var(--r-card);border:1px solid rgba(120,200,255,.1);background:rgba(255,255,255,.035);}
.compare-card.win{border-color:rgba(31,216,201,.45);box-shadow:var(--glow);background:linear-gradient(150deg,rgba(31,216,201,.09),rgba(6,12,22,.85));}
.compare-card h3{font-size:20px;margin-bottom:18px;}
.compare-card.win h3{color:var(--primary);}
.compare-list li{display:flex;gap:10px;padding:11px 0;font-size:14.5px;color:var(--text-2);border-bottom:1px dashed rgba(120,200,255,.12);}
.compare-list li:last-child{border-bottom:0;}
.compare-list li::before{content:"";flex:0 0 auto;width:6px;height:6px;margin-top:9px;border-radius:2px;background:var(--text-3);}
.compare-card.win .compare-list li{color:var(--text-1);}
.compare-card.win .compare-list li::before{background:var(--primary);box-shadow:0 0 10px var(--primary);}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--glass-line);background:var(--glass);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(31,216,201,.4);box-shadow:var(--sh-2);}
.news-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2);}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.news-card:hover .news-cover img{transform:scale(1.03);}
.news-cover::after{content:"";position:absolute;inset:0;background:rgba(31,216,201,.06);border-bottom:1px solid var(--glass-line);}
.news-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.badge{
  align-self:flex-start;padding:4px 11px;border-radius:var(--r-pill);font-size:12px;
  background:rgba(31,216,201,.14);color:var(--primary);
}
.news-title{font-size:17px;line-height:1.5;color:var(--text-1);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-desc{font-size:14px;line-height:1.7;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.empty-box{
  grid-column:1/-1;padding:56px 24px;border-radius:var(--r-card);border:1px dashed var(--glass-line);
  background:var(--glass);display:flex;flex-direction:column;align-items:center;gap:16px;text-align:center;
}
.empty-box svg{width:40px;height:40px;color:var(--text-3);}
.empty-box p{color:var(--text-2);font-size:15px;}

/* ---------- trust ---------- */
.trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.trust-card{padding:26px;border-radius:var(--r-card);border:1px solid var(--glass-line);background:var(--glass);}
.trust-card .quote{font-size:15px;color:var(--text-1);line-height:1.85;}
.trust-card .who{margin-top:18px;display:flex;align-items:center;gap:12px;}
.trust-avatar{width:38px;height:38px;border-radius:50%;background:linear-gradient(140deg,var(--primary),var(--secondary));display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;color:#04211F;}
.trust-card .who span{display:block;font-size:13px;color:var(--text-3);}
.trust-card .who b{display:block;font-size:14px;color:var(--text-1);font-weight:600;}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px;margin:0 auto;}
.faq-item{
  position:relative;border-radius:16px;border:1px solid var(--glass-line);background:var(--glass);
  overflow:hidden;transition:border-color .22s var(--ease),background .22s var(--ease);
}
.faq-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--primary);transform:scaleY(0);transform-origin:top;transition:transform .24s var(--ease);}
.faq-item.is-open{border-color:rgba(31,216,201,.4);background:rgba(31,216,201,.05);}
.faq-item.is-open::before{transform:scaleY(1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:60px;padding:16px 22px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:15.5px;font-weight:600;color:var(--text-1);
}
.faq-icon{flex:0 0 auto;width:20px;height:20px;position:relative;transition:transform .24s var(--ease);}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--primary);border-radius:2px;}
.faq-icon::before{left:9px;top:2px;width:2px;height:16px;}
.faq-icon::after{top:9px;left:2px;width:16px;height:2px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
.faq-a p{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--text-2);animation:fadeIn .18s var(--ease);}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:none;}}

/* ---------- form ---------- */
.cta-panel{
  display:grid;grid-template-columns:.85fr 1.15fr;gap:40px;padding:44px;border-radius:24px;
  border:1px solid var(--glass-line);background:linear-gradient(150deg,rgba(16,28,48,.92),rgba(6,12,22,.9));
  box-shadow:var(--sh-2);position:relative;overflow:hidden;
}
.cta-panel::before{content:"";position:absolute;top:-140px;right:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(31,216,201,.18),transparent 68%);}
.cta-copy{position:relative;z-index:2;}
.cta-copy h2{font-size:30px;}
.cta-copy p{margin-top:14px;color:var(--text-2);font-size:15px;}
.cta-points{margin-top:24px;display:flex;flex-direction:column;gap:12px;}
.cta-points li{display:flex;align-items:center;gap:10px;font-size:14.5px;color:var(--text-2);}
.cta-points li i{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px var(--primary);}
.form-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1/-1;}
.field label{font-size:13.5px;color:var(--text-2);}
.field input,.field select,.field textarea{
  width:100%;padding:13px 15px;border-radius:var(--r-btn);
  background:rgba(4,7,14,.7);border:1px solid var(--glass-line);color:var(--text-1);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
  appearance:none;
}
.field select{
  background-image:linear-gradient(45deg,transparent 50%,var(--text-2) 50%),linear-gradient(135deg,var(--text-2) 50%,transparent 50%);
  background-position:calc(100% - 20px) calc(50% - 2px),calc(100% - 14px) calc(50% - 2px);
  background-size:6px 6px,6px 6px;background-repeat:no-repeat;
}
.field textarea{min-height:120px;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(31,216,201,.18);background:rgba(4,7,14,.9);
}
.field.is-error input,.field.is-error select,.field.is-error textarea{border-color:var(--danger);}
.field.is-ok input,.field.is-ok select,.field.is-ok textarea{border-color:var(--primary);}
.form-note{grid-column:1/-1;font-size:12px;color:var(--text-3);}
.form-actions{grid-column:1/-1;display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.form-msg{font-size:13.5px;color:var(--primary);}
.spinner{width:15px;height:15px;border-radius:50%;border:2px solid rgba(4,33,31,.3);border-top-color:#04211F;animation:spin .7s linear infinite;display:none;}
@keyframes spin{to{transform:rotate(360deg);}}
.btn.is-loading .spinner{display:block;}

/* ---------- footer ---------- */
.site-footer{position:relative;margin-top:40px;border-top:1px solid var(--glass-line);background:linear-gradient(180deg,rgba(10,19,34,.6),rgba(4,7,14,1));}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding:72px 0 48px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:280px;line-height:1.8;}
.footer-contact{margin-top:20px;display:flex;gap:10px;}
.footer-contact a{width:36px;height:36px;border-radius:10px;border:1px solid var(--glass-line);background:var(--glass);display:flex;align-items:center;justify-content:center;color:var(--text-2);transition:color .2s var(--ease),border-color .2s var(--ease);}
.footer-contact a:hover{color:var(--primary);border-color:rgba(31,216,201,.5);}
.footer-contact svg{width:16px;height:16px;}
.footer-col h4{font-size:14px;color:var(--text-1);margin-bottom:18px;}
.footer-col li{margin-bottom:11px;}
.footer-col a{font-size:13.5px;color:var(--text-2);transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{border-top:1px solid rgba(120,200,255,.1);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--text-3);}
.footer-bottom .quick{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom .quick a:hover{color:var(--primary);}

@media (max-width:1024px){
  .nav-links,.nav-actions .btn-ghost{display:none;}
  .burger{display:flex;}
  .hero{padding:140px 0 72px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero h1{font-size:38px;}
  .hero-panel{min-height:320px;}
  .mini-a{right:10px;}
  .mini-b{left:10px;}
  .kpi-grid{grid-template-columns:repeat(2,1fr);}
  .bento{grid-template-columns:repeat(2,1fr);}
  .bento-card.large{grid-column:span 2;grid-row:span 1;}
  .news-grid,.trust-grid{grid-template-columns:repeat(2,1fr);}
  .cta-panel{grid-template-columns:1fr;padding:32px;}
  .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:14px;margin-bottom:28px;}
  .section-title{font-size:26px;}
  .hero h1{font-size:30px;}
  .hero-lead{font-size:15.5px;}
  .hero-stats{gap:22px;}
  .hero-stat b{font-size:18px;}
  .compare{grid-template-columns:1fr;}
  .compare-divider{display:none;}
  .vs-badge{position:static;transform:none;margin:0 auto;}
  .news-grid,.trust-grid{grid-template-columns:1fr;}
  .bento{grid-template-columns:1fr;}
  .bento-card.large{grid-column:span 1;}
  .form-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;padding:52px 0 32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .kpi-grid{grid-template-columns:repeat(2,1fr);}
  .kpi-value{font-size:34px;}
  .hero-actions .btn{width:100%;}
  .cta-panel{padding:24px;}
  .cta-copy h2{font-size:24px;}
}

/* roulang page: article */
:root{
  --bg-base:#04070E;
  --bg-1:#0A1322;
  --bg-2:#101C30;
  --glass:rgba(255,255,255,.055);
  --glass-2:rgba(255,255,255,.085);
  --glass-line:rgba(120,200,255,.16);
  --primary:#1FD8C9;
  --primary-2:#38E9DA;
  --secondary:#5A6BFF;
  --accent:#FFC46B;
  --danger:#FF6B6B;
  --text-1:#E8F2FF;
  --text-2:#94AAC6;
  --text-3:#5C7290;
  --r-card:18px;
  --r-btn:12px;
  --r-input:12px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(0,0,0,.38);
  --sh-2:0 20px 48px rgba(0,0,0,.5);
  --glow:0 0 0 1px rgba(31,216,201,.35), 0 8px 28px rgba(31,216,201,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1200px;
  --font-cn:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--text-1);
  background:var(--bg-base);
  background-image:
    radial-gradient(900px 520px at 8% -6%, rgba(31,216,201,.16), transparent 62%),
    radial-gradient(760px 480px at 96% 12%, rgba(90,107,255,.14), transparent 66%),
    linear-gradient(180deg,#04070E 0%,#060C17 45%,#04070E 100%);
  background-attachment:fixed;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(120,200,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,200,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 50% 8%,#000 12%,transparent 72%);
  mask-image:radial-gradient(circle at 50% 8%,#000 12%,transparent 72%);
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.5px;line-height:1.2;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:rgba(31,216,201,.3);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#060C17}
::-webkit-scrollbar-thumb{background:rgba(120,200,255,.18);border-radius:9px;border:2px solid #060C17}
::-webkit-scrollbar-thumb:hover{background:rgba(31,216,201,.4)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

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

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  padding:14px 0;
  transition:padding .26s var(--ease);
}
.site-header::before{
  content:"";position:absolute;inset:0;
  background:rgba(6,12,22,.74);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  border-bottom:1px solid transparent;
  opacity:0;transition:opacity .26s var(--ease),border-color .26s var(--ease);
}
.site-header.is-scrolled{padding:6px 0}
.site-header.is-scrolled::before{opacity:1;border-bottom-color:var(--glass-line)}
.nav-inner{
  position:relative;z-index:2;
  max-width:1100px;margin:0 auto;padding:0 24px;
  height:56px;display:flex;align-items:center;gap:22px;
  transition:height .26s var(--ease);
}
.site-header.is-scrolled .nav-inner{height:52px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:24px;height:24px;color:var(--primary);filter:drop-shadow(0 0 8px rgba(31,216,201,.5))}
.logo-text{font-size:16px;font-weight:600;letter-spacing:-.2px;color:var(--text-1);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:9px 12px;border-radius:10px;
  font-size:14px;color:var(--text-2);white-space:nowrap;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.nav-link:hover{background:rgba(31,216,201,.08);color:var(--text-1)}
.nav-link.is-active{background:rgba(31,216,201,.12);color:var(--primary)}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;
  border-radius:2px;background:var(--primary);
  box-shadow:0 0 12px rgba(31,216,201,.85);
}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;z-index:130}
.burger{
  display:none;flex-direction:column;justify-content:center;gap:4px;
  width:42px;height:38px;padding:0 11px;
  background:var(--glass);border:1px solid var(--glass-line);border-radius:11px;
  cursor:pointer;transition:border-color .18s var(--ease)
}
.burger span{display:block;height:2px;border-radius:2px;background:var(--text-1);transition:transform .22s var(--ease),opacity .22s var(--ease)}
.burger:hover{border-color:rgba(31,216,201,.5)}
.site-header.is-open .burger span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header.is-open .burger span:nth-child(2){opacity:0}
.site-header.is-open .burger span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;letter-spacing:-.1px;cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn-sm{padding:9px 16px;font-size:13.5px;border-radius:10px}
.btn-primary{
  background:linear-gradient(120deg,var(--primary) 0%,var(--primary-2) 46%,var(--secondary) 130%);
  color:#03130F;box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(31,216,201,.45),0 14px 34px rgba(31,216,201,.36)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(31,216,201,.3),0 6px 16px rgba(31,216,201,.24)}
.btn-ghost{
  background:var(--glass);border-color:var(--glass-line);color:var(--text-1);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.btn-ghost:hover{border-color:rgba(31,216,201,.55);background:var(--glass-2);transform:translateY(-2px)}
.btn-line{padding:0;background:none;border:0;color:var(--primary);font-weight:600;font-size:14px}
.btn-line:hover{text-decoration:underline;text-underline-offset:4px}

/* ---------- badges & breadcrumb ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.2px;
}
.badge-cat{background:rgba(31,216,201,.14);color:var(--primary);border:1px solid rgba(31,216,201,.28)}
.badge-soft{background:var(--glass);color:var(--text-2);border:1px solid var(--glass-line)}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  padding:28px 0 18px;font-size:13px;color:var(--text-3);
}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{width:1px;height:12px;background:rgba(120,200,255,.24);display:inline-block}
.breadcrumb .current{color:var(--primary)}

/* ---------- article head ---------- */
.article-head{max-width:960px;padding-bottom:26px}
.article-head h1{
  font-size:clamp(26px,4vw,40px);line-height:1.24;
  background:linear-gradient(120deg,#FFFFFF 8%,#CFF6F2 52%,#9FB4FF 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:14px;margin-top:18px;font-size:13px;color:var(--text-3)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(120,200,255,.35)}
.article-meta time{font-variant-numeric:tabular-nums;font-family:var(--font-mono);color:var(--text-2)}
.article-cover{
  position:relative;margin:8px 0 40px;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--glass-line);box-shadow:var(--sh-2);
}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(31,216,201,.08),rgba(4,7,14,.55));
  pointer-events:none;
}
.article-cover figcaption{
  position:absolute;left:18px;bottom:14px;z-index:2;
  font-size:13px;color:rgba(232,242,255,.85);
  background:rgba(6,12,22,.6);border:1px solid var(--glass-line);
  padding:5px 12px;border-radius:var(--r-pill);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
}

/* ---------- layout ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;
  gap:52px;align-items:start;padding-bottom:8px;
}
.article-body{max-width:760px}

/* ---------- prose ---------- */
.prose{font-size:16px;line-height:1.9;color:var(--text-2)}
.prose > * + *{margin-top:1.2em}
.prose h2{
  position:relative;margin-top:2em;padding-left:20px;
  font-size:26px;line-height:1.35;color:var(--text-1);
}
.prose h2::before{
  content:"";position:absolute;left:0;top:6px;width:4px;height:18px;
  border-radius:2px;background:linear-gradient(180deg,var(--primary),var(--secondary));
  box-shadow:0 0 14px rgba(31,216,201,.6);
}
.prose h3{margin-top:1.7em;font-size:20px;color:var(--text-1)}
.prose p{color:var(--text-2)}
.prose strong{color:var(--text-1);font-weight:600}
.prose a{color:var(--primary);border-bottom:1px solid rgba(31,216,201,.35)}
.prose a:hover{border-bottom-color:var(--primary)}
.prose ul,.prose ol{padding-left:2px}
.prose li{position:relative;padding-left:20px;margin-top:.6em}
.prose ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 10px rgba(31,216,201,.6);
}
.prose ol{counter-reset:li}
.prose ol li{counter-increment:li}
.prose ol li::before{
  content:counter(li);position:absolute;left:0;top:.35em;
  font-family:var(--font-mono);font-size:13px;color:var(--primary);font-weight:600;
}
.prose blockquote{
  margin:1.6em 0;padding:18px 22px;border-left:3px solid var(--primary);
  border-radius:0 14px 14px 0;background:var(--glass);
  border-top:1px solid var(--glass-line);border-right:1px solid var(--glass-line);border-bottom:1px solid var(--glass-line);
  color:var(--text-1);font-size:15.5px;
}
.prose img{border-radius:12px;margin:1.4em 0;border:1px solid var(--glass-line)}
.prose figure{margin:1.6em 0}
.prose figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.prose table{
  width:100%;border-collapse:collapse;overflow:hidden;border-radius:12px;
  border:1px solid var(--glass-line);font-size:14.5px;background:rgba(255,255,255,.02);
}
.prose thead th{
  background:rgba(31,216,201,.12);color:var(--text-1);
  text-align:left;padding:12px 14px;font-weight:600;
}
.prose tbody td{padding:12px 14px;border-top:1px solid rgba(120,200,255,.1);color:var(--text-2)}
.prose tbody tr:nth-child(even){background:rgba(255,255,255,.028)}
.prose code{
  font-family:var(--font-mono);font-size:13.5px;
  background:rgba(90,107,255,.16);color:#CFE0FF;
  padding:2px 6px;border-radius:6px;
}
.prose pre{
  background:#05090F;border:1px solid var(--glass-line);border-radius:14px;
  padding:18px 20px;overflow-x:auto;font-size:13.5px;line-height:1.7;color:#C9E6FF;
}
.prose pre code{background:none;padding:0;color:inherit}
.prose hr{border:0;height:1px;background:linear-gradient(90deg,transparent,rgba(120,200,255,.28),transparent);margin:2.2em 0}

/* ---------- empty state ---------- */
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:16px;
  padding:64px 28px;text-align:center;
  background:var(--glass);border:1px dashed var(--glass-line);border-radius:var(--r-card);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
}
.empty-state svg{width:44px;height:44px;color:var(--primary);opacity:.85}
.empty-state p{color:var(--text-2);font-size:15px}

/* ---------- sidebar ---------- */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px}
.side-card{
  padding:22px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--glass-line);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.07),var(--sh-1);
}
.side-card h3{font-size:15px;color:var(--text-1);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--primary);box-shadow:0 0 10px rgba(31,216,201,.7)}
.side-list{display:flex;flex-direction:column;gap:2px}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:9px 10px;border-radius:10px;font-size:13.5px;color:var(--text-2);
  transition:background .18s var(--ease),color .18s var(--ease)
}
.side-list a:hover{background:rgba(31,216,201,.09);color:var(--primary)}
.side-list a span{color:var(--text-3);font-size:12px;transition:transform .18s var(--ease)}
.side-list a:hover span{transform:translateX(3px);color:var(--primary)}
.side-note{font-size:13px;line-height:1.8;color:var(--text-3)}
.side-card .btn{width:100%;margin-top:14px}
.side-pick{display:flex;gap:12px;padding:10px 0;border-top:1px solid rgba(120,200,255,.1)}
.side-pick:first-of-type{border-top:0;padding-top:0}
.side-pick img{width:64px;height:44px;border-radius:9px;object-fit:cover;flex-shrink:0;border:1px solid var(--glass-line)}
.side-pick b{display:block;font-size:13.5px;font-weight:600;color:var(--text-1);line-height:1.5}
.side-pick:hover b{color:var(--primary)}

/* ---------- tags ---------- */
.article-tags{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:46px}
.article-tags .label{font-size:13px;color:var(--text-3);margin-right:2px}
.tag{
  padding:7px 14px;border-radius:var(--r-pill);font-size:13px;
  background:var(--glass);border:1px solid var(--glass-line);color:var(--text-2);
  transition:border-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease)
}
.tag:hover{border-color:rgba(31,216,201,.5);color:var(--primary);transform:translateY(-2px)}

/* ---------- post nav ---------- */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:34px}
.post-nav a{
  display:block;padding:22px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--glass-line);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease)
}
.post-nav a:hover{transform:translateY(-4px);border-color:rgba(31,216,201,.45);box-shadow:var(--sh-1)}
.post-nav span{display:block;font-size:12.5px;color:var(--text-3);margin-bottom:8px;letter-spacing:.4px}
.post-nav b{display:block;font-size:16px;font-weight:600;color:var(--text-1);line-height:1.55}
.post-nav a:hover b{color:var(--primary)}

/* ---------- related ---------- */
.related{margin-top:72px;padding-top:38px;border-top:1px solid rgba(120,200,255,.12)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px}
.section-head h2{font-size:26px;color:var(--text-1)}
.section-head p{margin-top:8px;font-size:14px;color:var(--text-3)}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--r-card);background:var(--glass);border:1px solid var(--glass-line);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.07);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease)
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(31,216,201,.42);box-shadow:var(--sh-1)}
.news-thumb{position:relative;overflow:hidden;aspect-ratio:16/9;background:#08111F}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(31,216,201,.06),rgba(4,7,14,.42))}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-body h3{font-size:17px;line-height:1.5;color:var(--text-1);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card:hover h3{color:var(--primary)}
.news-body p{font-size:13.5px;line-height:1.7;color:var(--text-3);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;font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums}

/* ---------- back to top ---------- */
.to-top{
  position:fixed;right:26px;bottom:26px;z-index:110;
  width:46px;height:46px;display:flex;align-items:center;justify-content:center;
  border-radius:14px;border:1px solid var(--glass-line);
  background:rgba(10,19,34,.82);color:var(--primary);cursor:pointer;
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  opacity:0;pointer-events:none;transform:translateY(12px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),border-color .2s var(--ease)
}
.to-top.is-show{opacity:1;pointer-events:auto;transform:none}
.to-top:hover{border-color:rgba(31,216,201,.6);box-shadow:0 0 0 1px rgba(31,216,201,.3),0 10px 26px rgba(31,216,201,.24)}
.to-top svg{width:18px;height:18px}

/* ---------- footer ---------- */
.site-footer{position:relative;z-index:1;margin-top:96px;padding:56px 0 26px;border-top:1px solid rgba(120,200,255,.12);background:rgba(6,12,22,.55)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:38px}
.footer-brand p{margin:16px 0 18px;font-size:13.5px;line-height:1.8;color:var(--text-3);max-width:300px}
.footer-contact{display:flex;gap:10px}
.footer-contact a{
  width:38px;height:38px;display:flex;align-items:center;justify-content:center;
  border-radius:11px;border:1px solid var(--glass-line);background:var(--glass);color:var(--text-2);
  transition:color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease)
}
.footer-contact a:hover{color:var(--primary);border-color:rgba(31,216,201,.5);transform:translateY(-2px)}
.footer-contact svg{width:18px;height:18px}
.footer-col h4{font-size:14px;color:var(--text-1);margin-bottom:16px;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:13.5px;color:var(--text-3)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:46px;padding-top:22px;border-top:1px solid rgba(120,200,255,.1);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-3)
}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom .links a:hover{color:var(--primary)}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:40px}
  .article-side{position:static;flex-direction:row;flex-wrap:wrap}
  .article-side .side-card{flex:1 1 300px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:960px){
  .nav-links{
    position:fixed;inset:0;z-index:125;
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:6px;margin:0;padding:96px 24px 140px;
    background:rgba(6,12,22,.97);
    -webkit-backdrop-filter:blur(22px);backdrop-filter:blur(22px);
    opacity:0;transform:translateY(-10px);pointer-events:none;
    transition:opacity .22s var(--ease),transform .22s var(--ease)
  }
  .site-header.is-open .nav-links{opacity:1;transform:none;pointer-events:auto}
  .nav-link{
    width:100%;height:52px;justify-content:space-between;
    padding:0 14px;font-size:16px;border-radius:12px;
    background:rgba(255,255,255,.03);border:1px solid rgba(120,200,255,.1)
  }
  .nav-link::after{content:"›";font-size:18px;color:var(--text-3);line-height:1}
  .nav-link.is-active::after{color:var(--primary)}
  .nav-link.is-active{background:rgba(31,216,201,.12)}
  .nav-actions .btn{display:none}
  .site-header.is-open .nav-actions{
    position:fixed;left:24px;right:24px;bottom:28px;z-index:130;margin:0
  }
  .site-header.is-open .nav-actions .btn{display:inline-flex;flex:1}
  .burger{display:flex}
  .post-nav{grid-template-columns:1fr}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .nav-inner{padding:0 20px;gap:14px}
  .breadcrumb{padding:20px 0 14px}
  .article-head h1{font-size:27px}
  .article-cover{margin-bottom:30px}
  .prose{font-size:15.5px;line-height:1.85}
  .prose h2{font-size:21px}
  .prose h3{font-size:18px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .section-head h2{font-size:22px}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .related{margin-top:56px}
  .site-footer{margin-top:64px;padding:44px 0 22px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .to-top{right:16px;bottom:16px}
}
@media (max-width:520px){
  .logo-text{font-size:15px}
  .article-head{padding-bottom:18px}
  .article-meta{gap:10px;font-size:12.5px}
  .article-side{flex-direction:column}
  .article-side .side-card{flex:1 1 auto;width:100%}
  .post-nav a{padding:18px}
  .news-body{padding:16px 18px 18px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px}
}

/* roulang page: category1 */
:root{
  --bg-base:#04070E;
  --bg-1:#0A1322;
  --bg-2:#101C30;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.085);
  --glass-line:rgba(120,200,255,.16);
  --line-soft:rgba(120,200,255,.10);
  --primary:#1FD8C9;
  --primary-2:#38E9DA;
  --secondary:#5A6BFF;
  --accent:#FFC46B;
  --danger:#FF6B6B;
  --text-1:#E8F2FF;
  --text-2:#94AAC6;
  --text-3:#5C7290;
  --r-card:18px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(0,0,0,.38);
  --sh-2:0 20px 48px rgba(0,0,0,.5);
  --glow:0 0 0 1px rgba(31,216,201,.35),0 8px 28px rgba(31,216,201,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,"SFMono-Regular","JetBrains Mono","Roboto Mono",Menlo,Consolas,monospace;
  --sec:96px;
}
*,*::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:1.75;
  color:var(--text-1);
  background:var(--bg-base);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body.is-locked{overflow:hidden}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.5px;font-weight:600;line-height:1.28}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(31,216,201,.28)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg-base)}
::-webkit-scrollbar-thumb{background:rgba(120,200,255,.18);border-radius:999px;border:2px solid var(--bg-base)}
::-webkit-scrollbar-thumb:hover{background:rgba(120,200,255,.32)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sec) 0;position:relative}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-head h2{font-size:34px}
.section-head p{color:var(--text-2);font-size:15px;margin-top:10px;max-width:720px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.16em;color:var(--primary);text-transform:uppercase;margin-bottom:14px}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--primary);opacity:.7}
.divider{height:1px;background:linear-gradient(90deg,transparent,rgba(120,200,255,.22),transparent)}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  padding:14px 0;
  transition:padding .28s var(--ease),background .28s var(--ease),box-shadow .28s var(--ease);
}
.site-header.is-scrolled{padding:8px 0;background:rgba(6,12,22,.72);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);box-shadow:0 12px 32px rgba(0,0,0,.42);border-bottom:1px solid var(--line-soft)}
.nav-inner{
  width:100%;max-width:1100px;margin:0 auto;padding:0 24px;
  min-height:60px;display:flex;align-items:center;justify-content:space-between;gap:24px;
  border-radius:var(--r-pill);
  transition:min-height .28s var(--ease);
}
.site-header.is-scrolled .nav-inner{min-height:52px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:24px;height:24px;color:var(--primary);filter:drop-shadow(0 0 10px rgba(31,216,201,.5))}
.logo-text{font-size:17px;font-weight:600;letter-spacing:-.4px;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;display:inline-block;padding:8px 14px;border-radius:var(--r-pill);
  font-size:14.5px;color:var(--text-2);transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--text-1);background:rgba(31,216,201,.08)}
.nav-link.is-active{color:var(--primary);background:rgba(31,216,201,.12)}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 10px rgba(31,216,201,.8);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.burger{display:none;width:42px;height:42px;border:1px solid var(--glass-line);background:var(--glass);border-radius:12px;padding:0;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);transition:transform .25s var(--ease),opacity .25s var(--ease)}
.burger.is-on span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.is-on span:nth-child(2){opacity:0}
.burger.is-on span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:0;cursor:pointer;border-radius:var(--r-btn);
  padding:13px 24px;font-size:15px;font-weight:600;letter-spacing:-.2px;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
  white-space:nowrap;
}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-primary{background:linear-gradient(120deg,var(--primary),var(--secondary));color:#05121A;box-shadow:var(--glow)}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 0 1px rgba(31,216,201,.45),0 14px 34px rgba(31,216,201,.34)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(31,216,201,.3),0 6px 16px rgba(31,216,201,.22)}
.btn-ghost{background:var(--glass);border:1px solid var(--glass-line);color:var(--text-1);backdrop-filter:blur(14px)}
.btn-ghost:hover{border-color:rgba(31,216,201,.55);background:var(--glass-strong);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-block{width:100%}
.link-more{color:var(--primary);font-size:14px;font-weight:500;position:relative;display:inline-block}
.link-more::after{content:"";position:absolute;left:0;bottom:-3px;width:0;height:1px;background:var(--primary);transition:width .22s var(--ease)}
.link-more:hover::after{width:100%}

/* ---------- badges / pills ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;line-height:1;padding:6px 12px;border-radius:var(--r-pill);background:rgba(31,216,201,.14);color:var(--primary);border:1px solid rgba(31,216,201,.28)}
.badge-muted{background:rgba(90,107,255,.14);color:#9DA8FF;border-color:rgba(90,107,255,.3)}
.badge-warm{background:rgba(255,196,107,.14);color:var(--accent);border-color:rgba(255,196,107,.3)}
.pill{
  display:inline-flex;align-items:center;gap:7px;padding:9px 16px;border-radius:var(--r-pill);
  font-size:13.5px;color:var(--text-2);background:var(--glass);border:1px solid var(--glass-line);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.pill:hover{color:var(--text-1);border-color:rgba(31,216,201,.45);transform:translateY(-2px)}
.pill.is-active{color:#05121A;background:linear-gradient(120deg,var(--primary),var(--primary-2));border-color:transparent;font-weight:600}

/* ---------- glass card ---------- */
.glass{
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-card);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.07);
}

/* ---------- hero ---------- */
.hero{position:relative;padding:150px 0 88px;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(720px 460px at 8% -6%,rgba(31,216,201,.20),transparent 62%),
    radial-gradient(680px 480px at 96% 104%,rgba(90,107,255,.20),transparent 66%),
    linear-gradient(180deg,var(--bg-base),var(--bg-1) 60%,var(--bg-base));
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:0;opacity:.6;
  background-image:linear-gradient(rgba(120,200,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(120,200,255,.045) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 50% 30%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 30%,#000 20%,transparent 78%);
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:center}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);margin-bottom:22px}
.breadcrumb a{color:var(--text-2);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{width:1px;height:12px;background:var(--glass-line)}
.breadcrumb .current{color:var(--primary)}
.hero h1{font-size:52px;line-height:1.15;margin:18px 0 18px}
.hero h1 em{font-style:normal;color:var(--primary);text-shadow:0 0 26px rgba(31,216,201,.35)}
.hero-sub{color:var(--text-2);font-size:17px;max-width:520px;line-height:1.8}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin:32px 0 34px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:34px}
.hero-metrics li{display:flex;flex-direction:column;gap:2px}
.hero-metrics .num{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:26px;font-weight:600;color:var(--primary);text-shadow:0 0 22px rgba(31,216,201,.35)}
.hero-metrics .lab{font-size:13px;color:var(--text-3)}
.hero-panel{
  position:relative;border-radius:22px;overflow:hidden;
  border:1px solid var(--glass-line);
  background:linear-gradient(160deg,rgba(16,28,48,.9),rgba(10,19,34,.72));
  box-shadow:var(--sh-2);aspect-ratio:16/11;
}
.hero-panel img{width:100%;height:100%;object-fit:cover;opacity:.58;filter:saturate(1.05)}
.hero-panel::after{content:"";position:absolute;inset:0;background:linear-gradient(150deg,rgba(31,216,201,.24),rgba(4,7,14,.72) 62%)}
.hero-panel .corner{position:absolute;width:26px;height:26px;border:1px solid rgba(31,216,201,.6);z-index:3}
.hero-panel .corner.tl{top:16px;left:16px;border-right:0;border-bottom:0;border-radius:8px 0 0 0}
.hero-panel .corner.br{bottom:16px;right:16px;border-left:0;border-top:0;border-radius:0 0 8px 0}
.mini-card{
  position:absolute;z-index:4;padding:14px 16px;border-radius:14px;
  background:rgba(10,19,34,.72);border:1px solid var(--glass-line);backdrop-filter:blur(16px);
  box-shadow:0 12px 30px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.08);
}
.mini-card.a{left:22px;bottom:26px}
.mini-card.b{right:22px;top:26px}
.mini-card .k{font-size:12px;color:var(--text-3)}
.mini-card .v{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:20px;font-weight:600;color:var(--text-1);margin-top:4px}
.mini-card .v span{color:var(--primary)}

/* ---------- anchor bar ---------- */
.anchor-bar{position:sticky;top:72px;z-index:70;padding:12px 0;background:rgba(6,12,22,.72);backdrop-filter:blur(16px);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.anchor-inner{display:flex;align-items:center;gap:12px;overflow-x:auto;scrollbar-width:none}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-label{font-size:12px;letter-spacing:.14em;color:var(--text-3);white-space:nowrap;padding-right:6px}
.anchor-inner .pill{white-space:nowrap}

/* ---------- category layout ---------- */
.cat-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:44px;align-items:start}
.side-nav{position:sticky;top:150px;display:flex;flex-direction:column;gap:18px}
.side-card{padding:22px}
.side-card h3{font-size:15px;margin-bottom:14px;color:var(--text-1)}
.side-card p{font-size:13.5px;color:var(--text-2);line-height:1.75;margin-bottom:16px}
.toc{display:flex;flex-direction:column;gap:2px}
.toc a{display:block;font-size:13.5px;color:var(--text-2);padding:9px 12px;border-radius:10px;border-left:2px solid transparent;transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease)}
.toc a:hover{color:var(--text-1);background:rgba(31,216,201,.07);border-left-color:rgba(31,216,201,.5)}
.toc a.is-active{color:var(--primary);background:rgba(31,216,201,.1);border-left-color:var(--primary)}

/* ---------- step list ---------- */
.step-list{display:flex;flex-direction:column;gap:16px}
.step-item{
  display:grid;grid-template-columns:66px minmax(0,1fr);gap:20px;
  padding:24px 26px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--glass-line);
  backdrop-filter:blur(16px);box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.step-item:hover{transform:translateY(-4px);border-color:rgba(31,216,201,.4);box-shadow:var(--sh-2)}
.step-no{
  font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:30px;font-weight:600;line-height:1;
  color:var(--primary);text-shadow:0 0 22px rgba(31,216,201,.35);padding-top:4px;
}
.step-body h3{font-size:19px;margin-bottom:8px}
.step-body p{font-size:14.5px;color:var(--text-2);line-height:1.8;margin-bottom:12px}
.step-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.tag{font-size:12px;color:var(--text-2);padding:5px 11px;border-radius:var(--r-pill);background:rgba(255,255,255,.045);border:1px solid var(--line-soft)}

/* ---------- flow ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.flow-card{padding:26px 22px;position:relative}
.flow-card .idx{font-family:var(--mono);font-size:13px;color:var(--primary);letter-spacing:.1em}
.flow-card h3{font-size:18px;margin:12px 0 10px}
.flow-card p{font-size:14px;color:var(--text-2);line-height:1.8}
.flow-card::before{content:"";position:absolute;top:0;left:22px;right:22px;height:2px;background:linear-gradient(90deg,var(--primary),transparent);border-radius:2px;opacity:.6}

/* ---------- table ---------- */
.table-wrap{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--glass-line);background:var(--glass);backdrop-filter:blur(16px);box-shadow:var(--sh-1)}
table{width:100%;border-collapse:collapse;font-size:14.5px}
thead th{
  text-align:left;padding:16px 22px;font-size:13px;letter-spacing:.08em;color:var(--primary);
  background:rgba(31,216,201,.09);border-bottom:1px solid var(--glass-line);font-weight:600;
}
tbody td{padding:16px 22px;color:var(--text-2);border-bottom:1px solid rgba(120,200,255,.07);line-height:1.75;vertical-align:top}
tbody tr:nth-child(even){background:rgba(255,255,255,.022)}
tbody tr:hover{background:rgba(31,216,201,.05)}
tbody td:first-child{color:var(--text-1);font-weight:500}
tbody tr:last-child td{border-bottom:0}

/* ---------- media block ---------- */
.media-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.media-figure{border-radius:18px;overflow:hidden;border:1px solid var(--glass-line);box-shadow:var(--sh-2);position:relative}
.media-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
.media-figure::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(31,216,201,.06),rgba(4,7,14,.5))}
.check-list{display:flex;flex-direction:column;gap:16px;margin-top:26px}
.check-list li{display:grid;grid-template-columns:22px minmax(0,1fr);gap:14px;font-size:14.5px;color:var(--text-2);line-height:1.8}
.check-list svg{width:22px;height:22px;color:var(--primary);margin-top:3px}
.check-list strong{display:block;color:var(--text-1);font-weight:600;margin-bottom:2px;font-size:15.5px}

/* ---------- faq ---------- */
.faq{display:flex;flex-direction:column;gap:12px}
.faq-item{border-radius:var(--r-card);border:1px solid var(--glass-line);background:var(--glass);backdrop-filter:blur(16px);overflow:hidden;transition:border-color .22s var(--ease),box-shadow .22s var(--ease)}
.faq-item:hover{border-color:rgba(31,216,201,.32)}
.faq-item.is-open{border-color:rgba(31,216,201,.45);box-shadow:0 0 0 1px rgba(31,216,201,.18),0 14px 34px rgba(0,0,0,.42)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 24px;background:transparent;border:0;text-align:left;cursor:pointer;
  font-size:16px;font-weight:500;color:var(--text-1);position:relative;
}
.faq-q::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:0 3px 3px 0;background:var(--primary);transform:scaleY(0);transform-origin:center;transition:transform .22s var(--ease)}
.faq-item.is-open .faq-q::before{transform:scaleY(1)}
.faq-icon{flex-shrink:0;width:22px;height:22px;color:var(--primary);transition:transform .22s var(--ease)}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease),opacity .25s var(--ease);opacity:0}
.faq-item.is-open .faq-a{opacity:1}
.faq-a p{padding:0 24px 22px 24px;font-size:15px;line-height:1.85;color:var(--text-2)}

/* ---------- related ---------- */
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.related-card{padding:20px;display:flex;flex-direction:column;gap:8px;transition:transform .22s var(--ease),border-color .22s var(--ease)}
.related-card:hover{transform:translateY(-4px);border-color:rgba(31,216,201,.4)}
.related-card .name{font-size:15.5px;font-weight:600}
.related-card .desc{font-size:13px;color:var(--text-3);line-height:1.7}
.related-card .go{font-size:13px;color:var(--primary);margin-top:auto}

/* ---------- cta strip ---------- */
.cta-strip{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:28px 34px;border-radius:var(--r-card);
  background:linear-gradient(120deg,rgba(31,216,201,.14),rgba(90,107,255,.12));
  border:1px solid var(--glass-line);box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.08);
}
.cta-strip h3{font-size:20px;margin-bottom:6px}
.cta-strip p{font-size:14px;color:var(--text-2)}

/* ---------- footer ---------- */
.site-footer{position:relative;padding:72px 0 28px;background:linear-gradient(180deg,var(--bg-base),var(--bg-1));border-top:1px solid var(--line-soft);margin-top:20px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.8;margin:16px 0 20px;max-width:320px}
.footer-contact{display:flex;gap:10px}
.footer-contact a{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border-radius:11px;
  background:var(--glass);border:1px solid var(--glass-line);color:var(--text-2);
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.footer-contact a:hover{color:var(--primary);border-color:rgba(31,216,201,.5);transform:translateY(-2px)}
.footer-contact svg{width:18px;height:18px}
.footer-col h4{font-size:14px;margin-bottom:16px;color:var(--text-1)}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:13.5px;color:var(--text-2);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  padding-top:24px;border-top:1px solid var(--line-soft);font-size:13px;color:var(--text-3);
}
.footer-bottom .quick{display:flex;flex-wrap:wrap;gap:16px}
.footer-bottom .quick a{color:var(--text-2)}
.footer-bottom .quick a:hover{color:var(--primary)}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .hero h1{font-size:44px}
  .nav-inner{max-width:100%}
}
@media (max-width:1024px){
  :root{--sec:72px}
  .hero{padding:130px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-panel{aspect-ratio:16/9}
  .cat-layout{grid-template-columns:1fr;gap:30px}
  .side-nav{position:static;flex-direction:row;flex-wrap:wrap}
  .side-card{flex:1 1 280px}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .media-grid{grid-template-columns:1fr;gap:30px}
}
@media (max-width:900px){
  .nav-links{
    position:fixed;inset:0;z-index:120;flex-direction:column;align-items:stretch;gap:0;
    padding:96px 24px 120px;background:rgba(4,7,14,.94);
    backdrop-filter:blur(22px);-webkit-backdrop-filter:blur(22px);
    transform:translateY(-8px);opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
  }
  .nav-links.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}
  .nav-link{display:flex;align-items:center;justify-content:space-between;height:52px;padding:0 16px;border-radius:14px;font-size:16px;color:var(--text-1)}
  .nav-link::after{content:"›";font-size:20px;color:var(--text-3);margin-left:auto}
  .nav-link.is-active::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;background:var(--primary)}
  .nav-link.is-active::after{color:var(--primary)}
  .nav-actions .btn{display:none}
  .burger{display:flex}
  .anchor-bar{top:62px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .hero h1{font-size:32px}
  .hero-sub{font-size:15.5px}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px}
  .section-head h2{font-size:26px}
  .flow-grid{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .step-item{grid-template-columns:1fr;gap:12px;padding:20px}
  .step-no{font-size:24px}
  .cta-strip{flex-direction:column;align-items:flex-start;padding:24px}
  thead th,tbody td{padding:13px 16px}
  table{font-size:14px}
  .hero-metrics{gap:24px}
}
@media (max-width:520px){
  .hero{padding:118px 0 60px}
  .hero-cta .btn{width:100%}
  .mini-card.a{left:14px;bottom:14px}
  .mini-card.b{right:14px;top:14px}
  .mini-card .v{font-size:17px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category2 */
:root{
  --bg-base:#04070E;
  --bg-1:#0A1322;
  --bg-2:#101C30;
  --glass:rgba(255,255,255,.055);
  --glass-line:rgba(120,200,255,.16);
  --primary:#1FD8C9;
  --primary-2:#38E9DA;
  --secondary:#5A6BFF;
  --accent:#FFC46B;
  --danger:#FF6B6B;
  --text-1:#E8F2FF;
  --text-2:#94AAC6;
  --text-3:#5C7290;
  --radius-card:18px;
  --radius-btn:12px;
  --sh-1:0 8px 24px rgba(0,0,0,.38);
  --sh-2:0 20px 48px rgba(0,0,0,.5);
  --glow:0 0 0 1px rgba(31,216,201,.35),0 8px 28px rgba(31,216,201,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-sans:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text-1);
  background-color:var(--bg-base);
  background-image:
    radial-gradient(680px 420px at 8% -6%,rgba(31,216,201,.16),transparent 70%),
    radial-gradient(720px 480px at 100% 12%,rgba(90,107,255,.14),transparent 72%),
    linear-gradient(180deg,#04070E 0%,#071021 45%,#04070E 100%);
  background-attachment:fixed;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(120,200,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,200,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 20%,#000 20%,transparent 82%);
  -webkit-mask-image:radial-gradient(circle at 50% 20%,#000 20%,transparent 82%);
}
body.lock{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-0.5px;font-weight:600;line-height:1.28}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:rgba(31,216,201,.3)}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#070E1A}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,rgba(31,216,201,.5),rgba(90,107,255,.45));border-radius:999px;border:2px solid #070E1A}

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

/* ============ 顶部导航 ============ */
.site-header{position:sticky;top:0;z-index:80;padding:14px 0;transition:padding .28s var(--ease)}
.nav-inner{
  max-width:1100px;margin:0 auto;padding:12px 24px;
  display:flex;align-items:center;gap:20px;
  border:1px solid transparent;border-radius:999px;
  background:transparent;
  transition:background .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease),padding .28s var(--ease);
}
.site-header.is-scrolled .nav-inner{
  padding:8px 20px;
  background:rgba(10,19,34,.74);
  border-color:var(--glass-line);
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.07);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.4px;flex-shrink:0}
.logo-mark{width:24px;height:24px;color:var(--primary);filter:drop-shadow(0 0 10px rgba(31,216,201,.5))}
.logo-text{font-size:16px;background:linear-gradient(120deg,#E8F2FF,#8FF3E9 70%);-webkit-background-clip:text;background-clip:text;color:transparent;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;padding:9px 14px;border-radius:999px;font-size:14.5px;color:var(--text-2);
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-link:hover{color:var(--text-1);background:rgba(31,216,201,.08)}
.nav-link.is-active{color:var(--primary);background:rgba(31,216,201,.12)}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,rgba(31,216,201,0),var(--primary),rgba(31,216,201,0));
  box-shadow:0 0 12px rgba(31,216,201,.75);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-cta-mobile{display:none}
.burger{display:none;width:42px;height:42px;border:1px solid var(--glass-line);border-radius:12px;background:var(--glass);cursor:pointer;padding:0;place-items:center;flex-direction:column;gap:5px}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);transition:transform .24s var(--ease),opacity .2s var(--ease)}
.burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),filter .18s var(--ease);
}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-primary{
  background:linear-gradient(120deg,var(--primary),var(--primary-2) 45%,var(--secondary) 130%);
  color:#04141A;box-shadow:var(--glow);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(31,216,201,.5),0 14px 36px rgba(31,216,201,.36)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(31,216,201,.4),0 6px 16px rgba(31,216,201,.22)}
.btn-ghost{background:var(--glass);border-color:var(--glass-line);color:var(--text-1);backdrop-filter:blur(14px)}
.btn-ghost:hover{border-color:rgba(31,216,201,.55);background:rgba(31,216,201,.1);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none;box-shadow:none}
.link-more{color:var(--primary);font-size:14.5px;font-weight:600;position:relative;display:inline-flex;align-items:center;gap:6px}
.link-more::after{content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;background:var(--primary);transition:width .24s var(--ease)}
.link-more:hover::after{width:100%}

/* ============ Hero ============ */
.hero{padding:56px 0 64px}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);margin-bottom:20px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-2);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{width:1px;height:12px;background:rgba(120,200,255,.28);display:inline-block}
.breadcrumb .current{color:var(--primary)}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.4px;
  color:var(--primary);background:rgba(31,216,201,.14);border:1px solid rgba(31,216,201,.28);
}
.tag-soft{color:var(--text-2);background:rgba(120,200,255,.1);border-color:var(--glass-line)}
.hero h1{font-size:50px;line-height:1.14;margin:18px 0 16px;font-weight:700}
.hero h1 .grad{background:linear-gradient(120deg,var(--primary),#9BF6EE 60%,var(--secondary));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:17px;color:var(--text-2);max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 26px}
.hero-meta{display:flex;flex-wrap:wrap;gap:26px;font-size:13.5px;color:var(--text-2)}
.hero-meta li{display:flex;align-items:center;gap:8px}
.hero-meta li::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--primary);box-shadow:0 0 10px rgba(31,216,201,.8)}
.hero-panel{
  position:relative;border-radius:22px;padding:14px;
  background:linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.02));
  border:1px solid var(--glass-line);box-shadow:var(--sh-2);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
}
.hero-panel::before,.hero-panel::after{
  content:"";position:absolute;width:24px;height:24px;border-color:var(--primary);opacity:.7;
}
.hero-panel::before{top:-1px;left:-1px;border-top:1px solid;border-left:1px solid;border-top-left-radius:20px}
.hero-panel::after{bottom:-1px;right:-1px;border-bottom:1px solid;border-right:1px solid;border-bottom-right-radius:20px}
.hero-visual{position:relative;border-radius:16px;overflow:hidden;aspect-ratio:16/10;border:1px solid var(--glass-line)}
.hero-visual img{width:100%;height:100%;object-fit:cover;opacity:.72}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(4,7,14,.15),rgba(4,7,14,.72)),rgba(31,216,201,.06)}
.mini-card{
  position:absolute;display:flex;flex-direction:column;gap:2px;
  padding:12px 16px;border-radius:14px;background:rgba(10,19,34,.82);
  border:1px solid var(--glass-line);box-shadow:var(--sh-1);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
}
.mini-card b{font-family:var(--font-mono);font-size:20px;color:var(--primary);font-variant-numeric:tabular-nums;text-shadow:0 0 22px rgba(31,216,201,.4)}
.mini-card span{font-size:12px;color:var(--text-2)}
.mini-card.one{left:-22px;bottom:56px}
.mini-card.two{right:-16px;top:44px}

/* ============ 区块 ============ */
.section{padding:52px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.section-head h2{font-size:32px;font-weight:700}
.section-head p{color:var(--text-2);font-size:15px;margin-top:10px;max-width:620px}
.eyebrow{font-size:12.5px;letter-spacing:1.4px;color:var(--primary);text-transform:uppercase;font-weight:600;margin-bottom:12px;display:block}
.divider-fade{height:1px;background:linear-gradient(90deg,rgba(120,200,255,0),rgba(120,200,255,.28),rgba(120,200,255,0))}

/* ============ 指标横条 ============ */
.metrics{
  display:grid;grid-template-columns:repeat(3,1fr);
  border:1px solid var(--glass-line);border-radius:var(--radius-card);
  background:var(--glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  overflow:hidden;box-shadow:inset 0 1px 0 rgba(255,255,255,.07);
}
.metric{position:relative;padding:30px 34px;display:flex;flex-direction:column;gap:6px}
.metric+.metric::before{content:"";position:absolute;left:0;top:22%;bottom:22%;width:1px;background:linear-gradient(180deg,transparent,rgba(120,200,255,.3),transparent)}
.metric-num{
  font-family:var(--font-mono);font-size:46px;line-height:1.05;font-weight:700;
  color:var(--text-1);font-variant-numeric:tabular-nums;
  text-shadow:0 0 26px rgba(31,216,201,.35);
}
.metric-num em{font-style:normal;font-size:18px;color:var(--primary);margin-left:4px}
.metric-label{font-size:13px;color:var(--text-2)}

/* ============ 双列卡片网格 ============ */
.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.g-card{
  position:relative;padding:28px;border-radius:var(--radius-card);
  background:var(--glass);border:1px solid var(--glass-line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.07);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
  display:flex;flex-direction:column;gap:12px;
}
.g-card:hover{transform:translateY(-4px);border-color:rgba(31,216,201,.42);box-shadow:var(--sh-1),0 0 0 1px rgba(31,216,201,.16)}
.card-icon{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  color:var(--primary);background:rgba(31,216,201,.12);border:1px solid rgba(31,216,201,.24);
}
.card-icon svg{width:22px;height:22px}
.g-card h3{font-size:19px;font-weight:600}
.g-card p{font-size:14.6px;color:var(--text-2);line-height:1.85}
.card-foot{margin-top:auto;padding-top:6px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.badge{
  display:inline-flex;align-items:center;padding:3px 11px;border-radius:999px;
  font-size:12px;font-weight:600;color:var(--primary);background:rgba(31,216,201,.14);
}
.badge-muted{color:var(--text-2);background:rgba(120,200,255,.1)}
.badge-accent{color:var(--accent);background:rgba(255,196,107,.14)}

/* ============ 宽幅配图 ============ */
.wide-banner{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  height:320px;border:1px solid var(--glass-line);box-shadow:var(--sh-2);
}
.wide-banner img{width:100%;height:100%;object-fit:cover;opacity:.6}
.wide-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(4,7,14,.92) 8%,rgba(4,7,14,.55) 52%,rgba(4,7,14,.2) 100%),rgba(31,216,201,.06);
}
.wide-copy{position:absolute;inset:auto 0 0 0;padding:38px;z-index:2;max-width:660px}
.wide-copy h2{font-size:28px;margin-bottom:12px}
.wide-copy p{color:var(--text-2);font-size:15px}

/* ============ 三步流程 ============ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;counter-reset:step}
.step{
  position:relative;padding:26px;border-radius:var(--radius-card);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--glass-line);backdrop-filter:blur(16px);
}
.step::before{
  counter-increment:step;content:"0" counter(step);
  font-family:var(--font-mono);font-size:13px;color:var(--primary);
  display:inline-block;margin-bottom:14px;letter-spacing:1px;
}
.step h3{font-size:17.5px;margin-bottom:10px}
.step p{font-size:14.4px;color:var(--text-2);line-height:1.85}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px;margin:0 auto}
.faq-item{
  border:1px solid var(--glass-line);border-radius:16px;background:var(--glass);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  overflow:hidden;transition:border-color .24s var(--ease),background .24s var(--ease);
}
.faq-item:hover{border-color:rgba(31,216,201,.34)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 24px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--text-1);
}
.faq-item.is-open{border-color:rgba(31,216,201,.42)}
.faq-q .plus{position:relative;flex-shrink:0;width:18px;height:18px;transition:transform .26s var(--ease)}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
}
.faq-q .plus::before{left:0;top:8px;width:18px;height:2px}
.faq-q .plus::after{top:0;left:8px;width:2px;height:18px}
.faq-item.is-open .plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a-inner{
  padding:0 24px 22px 27px;font-size:15px;color:var(--text-2);line-height:1.85;
  border-left:3px solid var(--primary);margin-left:24px;padding-left:18px;
}
.faq-item.is-open .faq-a{max-height:340px}

/* ============ CTA 条 ============ */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
  padding:30px 34px;border-radius:var(--radius-card);
  background:linear-gradient(120deg,rgba(31,216,201,.14),rgba(90,107,255,.12));
  border:1px solid var(--glass-line);box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.08);
}
.cta-bar h2{font-size:22px;margin-bottom:6px}
.cta-bar p{font-size:14.4px;color:var(--text-2)}
.pills{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.pill{
  display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border-radius:999px;
  font-size:14px;color:var(--text-2);background:var(--glass);border:1px solid var(--glass-line);
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),background .2s var(--ease);
}
.pill:hover{color:var(--primary);border-color:rgba(31,216,201,.5);background:rgba(31,216,201,.08);transform:translateY(-2px)}
.pill.is-current{color:var(--primary);border-color:rgba(31,216,201,.5);background:rgba(31,216,201,.12)}

/* ============ 页脚 ============ */
.site-footer{margin-top:80px;border-top:1px solid var(--glass-line);background:linear-gradient(180deg,rgba(10,19,34,.5),rgba(4,7,14,.9));position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding:64px 0 44px}
.footer-brand p{color:var(--text-2);font-size:14.4px;margin:16px 0 20px;max-width:320px;line-height:1.85}
.footer-contact{display:flex;gap:12px}
.footer-contact a{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  color:var(--text-2);background:var(--glass);border:1px solid var(--glass-line);
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.footer-contact a:hover{color:var(--primary);border-color:rgba(31,216,201,.5);transform:translateY(-2px)}
.footer-contact svg{width:18px;height:18px}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--text-1)}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14.2px;color:var(--text-2);transition:color .2s var(--ease),padding-left .2s var(--ease)}
.footer-col a:hover{color:var(--primary);padding-left:5px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding:22px 0 34px;border-top:1px solid rgba(120,200,255,.12);
  font-size:13px;color:var(--text-3);
}
.footer-quick{display:flex;flex-wrap:wrap;gap:18px}
.footer-quick a{color:var(--text-2);transition:color .2s var(--ease)}
.footer-quick a:hover{color:var(--primary)}

/* ============ 响应式 ============ */
@media (max-width:1080px){
  .hero h1{font-size:40px}
  .hero-grid{gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:1024px){
  .nav-inner{padding:10px 16px;gap:12px}
  .nav-links{
    position:fixed;inset:0;z-index:90;
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:6px;padding:96px 24px 120px;
    background:rgba(4,7,14,.96);
    backdrop-filter:blur(22px);-webkit-backdrop-filter:blur(22px);
    opacity:0;visibility:hidden;transform:translateY(-10px);pointer-events:none;
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s var(--ease);
    margin-left:0;
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto}
  .nav-link{
    display:flex;align-items:center;justify-content:space-between;
    min-height:52px;padding:0 18px;border-radius:14px;font-size:16px;
    background:rgba(255,255,255,.04);border:1px solid var(--glass-line);
  }
  .nav-link::after{content:"›";font-size:20px;color:var(--text-3);position:static;width:auto;height:auto;background:none;box-shadow:none;border:0}
  .nav-link.is-active::after{color:var(--primary);background:none;box-shadow:none}
  .nav-cta-mobile{
    display:flex;align-items:center;justify-content:center;margin-top:16px;min-height:52px;
    border-radius:14px;font-weight:600;color:#04141A;
    background:linear-gradient(120deg,var(--primary),var(--primary-2) 55%,var(--secondary));
    box-shadow:var(--glow);
  }
  .nav-actions .btn{display:none}
  .burger{display:flex}
  .hero{padding:36px 0 46px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-panel{order:-1}
  .mini-card.one{left:10px;bottom:14px}
  .mini-card.two{right:10px;top:14px}
  .card-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .section{padding:44px 0}
  .section-head h2{font-size:26px}
  .wide-banner{height:240px}
  .wide-copy{padding:26px}
  .wide-copy h2{font-size:22px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .metrics{grid-template-columns:1fr}
  .metric{padding:24px}
  .metric+.metric::before{left:20px;right:20px;top:0;bottom:auto;width:auto;height:1px;background:linear-gradient(90deg,transparent,rgba(120,200,255,.3),transparent)}
  .metric-num{font-size:38px}
  .hero h1{font-size:31px}
  .hero-sub{font-size:15.5px}
  .hero-meta{gap:16px;font-size:13px}
  .footer-grid{grid-template-columns:1fr;gap:0;padding:44px 0 24px}
  .footer-col{border-top:1px solid rgba(120,200,255,.12);padding:16px 0}
  .footer-col h4{margin:0;display:flex;align-items:center;justify-content:space-between;cursor:pointer;font-size:15px}
  .footer-col h4::after{content:"+";color:var(--primary);font-size:18px;line-height:1;transition:transform .24s var(--ease)}
  .footer-col.is-open h4::after{transform:rotate(45deg)}
  .footer-col ul{max-height:0;overflow:hidden;transition:max-height .28s var(--ease);gap:10px}
  .footer-col.is-open ul{max-height:240px;margin-top:14px}
  .footer-brand{padding-bottom:24px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:14px}
  .cta-bar{padding:24px}
  .wide-banner{height:180px}
  .wide-copy{padding:20px}
  .wide-copy p{font-size:14px}
  .faq-q{padding:16px 18px;font-size:15px}
  .faq-a-inner{margin-left:18px;padding:0 18px 20px 16px}
}
@media (max-width:520px){
  .hero h1{font-size:27px}
  .logo-text{font-size:14.5px}
  .btn{padding:12px 20px;font-size:14.5px}
  .hero-actions .btn{flex:1 1 auto}
  .g-card{padding:22px}
  .metric-num{font-size:34px}
}

/* roulang page: category3 */
:root{
  --bg-base:#04070E;
  --bg-1:#0A1322;
  --bg-2:#101C30;
  --glass:rgba(255,255,255,.055);
  --glass-line:rgba(120,200,255,.16);
  --primary:#1FD8C9;
  --primary-2:#38E9DA;
  --secondary:#5A6BFF;
  --accent:#FFC46B;
  --danger:#FF6B6B;
  --text-1:#E8F2FF;
  --text-2:#94AAC6;
  --text-3:#5C7290;
  --r-card:18px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(0,0,0,.38);
  --sh-2:0 20px 48px rgba(0,0,0,.5);
  --glow:0 0 0 1px rgba(31,216,201,.35),0 8px 28px rgba(31,216,201,.28);
  --font:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --sec-pc:96px;
  --sec-mb:56px;
}
*,*::before,*::after{box-sizing:border-box;}
html,body{margin:0;padding:0;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text-1);
  background-color:var(--bg-base);
  background-image:
    radial-gradient(760px 520px at 6% -8%,rgba(31,216,201,.18),transparent 62%),
    radial-gradient(720px 540px at 98% 2%,rgba(90,107,255,.16),transparent 60%),
    linear-gradient(rgba(120,200,255,.032) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,200,255,.032) 1px,transparent 1px);
  background-size:auto,auto,64px 64px,64px 64px;
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;letter-spacing:-.5px;line-height:1.25;font-weight:600;}
p{margin:0;}
::selection{background:rgba(31,216,201,.28);color:#fff;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#060B15;}
::-webkit-scrollbar-thumb{background:rgba(120,200,255,.22);border-radius:999px;border:2px solid #060B15;}
::-webkit-scrollbar-thumb:hover{background:rgba(31,216,201,.4);}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--sec-pc) 0;position:relative;}
.section + .section{border-top:1px solid rgba(120,200,255,.07);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;}
.section-head h2{font-size:34px;}
.section-note{color:var(--text-2);font-size:14px;max-width:420px;}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:2px;color:var(--primary);
  text-transform:uppercase;margin-bottom:14px;padding:4px 12px;border-radius:999px;
  background:rgba(31,216,201,.1);border:1px solid rgba(31,216,201,.24);
}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:linear-gradient(180deg,rgba(4,7,14,.72),rgba(4,7,14,0));
  transition:background .3s ease,backdrop-filter .3s ease,border-color .3s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(8,15,28,.78);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom-color:var(--glass-line);
}
.nav-inner{
  max-width:1100px;margin:0 auto;padding:0 24px;
  height:68px;display:flex;align-items:center;justify-content:space-between;gap:18px;
  transition:height .28s cubic-bezier(.22,.61,.36,1);
}
.site-header.is-scrolled .nav-inner{height:56px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{width:24px;height:24px;color:var(--primary);filter:drop-shadow(0 0 10px rgba(31,216,201,.5));}
.logo-text{font-size:17px;font-weight:700;letter-spacing:-.4px;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;padding:8px 14px;border-radius:var(--r-pill);
  font-size:14.5px;color:var(--text-2);
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--text-1);background:rgba(31,216,201,.08);}
.nav-link.is-active{color:var(--primary);background:rgba(31,216,201,.12);}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;bottom:-2px;transform:translateX(-50%);
  width:22px;height:2px;border-radius:2px;background:var(--primary);
  box-shadow:0 0 10px rgba(31,216,201,.85);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.burger{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--glass-line);background:var(--glass);}
.burger span{display:block;width:18px;height:2px;margin:4px auto;border-radius:2px;background:var(--text-1);transition:transform .22s ease,opacity .22s ease;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .18s cubic-bezier(.22,.61,.36,1),box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease,opacity .18s ease;
}
.btn-sm{padding:9px 16px;font-size:13.5px;}
.btn-primary{background:linear-gradient(120deg,var(--primary),var(--secondary));color:#04121A;box-shadow:var(--glow);}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 0 1px rgba(31,216,201,.5),0 14px 34px rgba(31,216,201,.4);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(31,216,201,.3),0 4px 14px rgba(31,216,201,.22);}
.btn-ghost{background:var(--glass);border-color:var(--glass-line);color:var(--text-1);backdrop-filter:blur(12px);}
.btn-ghost:hover{border-color:rgba(31,216,201,.55);background:rgba(255,255,255,.09);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn:disabled,.btn.is-disabled{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none;}

/* ---------- breadcrumb ---------- */
.crumb-bar{padding:26px 0 0;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--text-3);}
.crumb a:hover{color:var(--primary);}
.crumb span.sep{width:1px;height:12px;background:rgba(120,200,255,.28);display:inline-block;}
.crumb .current{color:var(--primary);}

/* ---------- hero ---------- */
.hero{padding:34px 0 8px;}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;}
.hero-copy h1{font-size:44px;line-height:1.2;margin-bottom:18px;}
.hero-copy h1 em{font-style:normal;color:var(--primary);text-shadow:0 0 26px rgba(31,216,201,.4);}
.hero-sub{color:var(--text-2);font-size:16.5px;max-width:560px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.hero-facts{display:flex;flex-wrap:wrap;gap:28px;}
.fact-num{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:24px;font-weight:700;color:var(--primary);text-shadow:0 0 24px rgba(31,216,201,.35);}
.fact-label{font-size:13px;color:var(--text-3);}
.hero-panel{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--glass-line);box-shadow:var(--sh-2);
  background:var(--bg-1);
}
.hero-panel img{width:100%;aspect-ratio:4/3;object-fit:cover;opacity:.62;}
.hero-panel::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(150deg,rgba(31,216,201,.22),rgba(90,107,255,.14) 55%,rgba(4,7,14,.72));
}
.hero-panel::before{
  content:"";position:absolute;left:16px;top:16px;width:24px;height:24px;z-index:3;
  border-left:1px solid var(--primary);border-top:1px solid var(--primary);opacity:.8;
}
.panel-chip{
  position:absolute;z-index:4;display:flex;flex-direction:column;gap:2px;
  padding:14px 18px;border-radius:14px;background:rgba(9,17,30,.78);
  border:1px solid var(--glass-line);backdrop-filter:blur(16px);box-shadow:var(--sh-1);
}
.panel-chip small{font-size:12px;color:var(--text-3);}
.panel-chip b{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:19px;color:var(--primary-2);}
.chip-a{right:20px;bottom:22px;}
.chip-b{left:20px;bottom:22px;}

/* ---------- anchor pills ---------- */
.anchor-bar{display:flex;flex-wrap:wrap;gap:10px;padding:26px 0 0;}
.pill{
  display:inline-flex;align-items:center;gap:8px;padding:9px 18px;border-radius:var(--r-pill);
  font-size:13.5px;color:var(--text-2);background:var(--glass);border:1px solid var(--glass-line);
  transition:color .18s ease,border-color .18s ease,background .18s ease,transform .18s ease;
}
.pill:hover{color:var(--text-1);border-color:rgba(31,216,201,.5);background:rgba(31,216,201,.09);transform:translateY(-2px);}
.pill.is-active{color:var(--primary);border-color:rgba(31,216,201,.55);background:rgba(31,216,201,.12);}

/* ---------- capability cards ---------- */
.cap-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.cap-card{
  padding:28px 24px;border-radius:var(--r-card);background:var(--glass);
  border:1px solid var(--glass-line);backdrop-filter:blur(18px);
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.07);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.cap-card:hover{transform:translateY(-4px);border-color:rgba(31,216,201,.42);box-shadow:var(--sh-2);}
.cap-icon{
  width:44px;height:44px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:rgba(31,216,201,.12);border:1px solid rgba(31,216,201,.26);color:var(--primary);margin-bottom:18px;
}
.cap-icon svg{width:22px;height:22px;}
.cap-card h3{font-size:19px;margin-bottom:10px;}
.cap-card p{color:var(--text-2);font-size:14.5px;}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:40px;}
.timeline::before{
  content:"";position:absolute;left:9px;top:10px;bottom:10px;width:1px;
  background:linear-gradient(180deg,rgba(31,216,201,.85),rgba(90,107,255,.4) 55%,rgba(90,107,255,0));
}
.tl-item{position:relative;margin-bottom:22px;}
.tl-item:last-child{margin-bottom:0;}
.tl-dot{
  position:absolute;left:-36px;top:28px;width:11px;height:11px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 0 4px rgba(31,216,201,.14),0 0 16px rgba(31,216,201,.8);
}
.tl-card{
  padding:26px 28px;border-radius:var(--r-card);background:var(--glass);
  border:1px solid var(--glass-line);backdrop-filter:blur(18px);
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.tl-card:hover{transform:translateY(-3px);border-color:rgba(31,216,201,.4);box-shadow:var(--sh-2);}
.tl-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:14px;}
.badge{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.3px;
}
.badge-primary{background:rgba(31,216,201,.14);color:var(--primary);border:1px solid rgba(31,216,201,.28);}
.badge-time{background:rgba(148,170,198,.1);color:var(--text-2);border:1px solid rgba(148,170,198,.2);font-family:var(--mono);font-variant-numeric:tabular-nums;}
.tl-card h3{font-size:21px;margin-bottom:12px;}
.tl-card > p{color:var(--text-2);font-size:15px;margin-bottom:16px;}
.tl-points{display:grid;gap:8px;}
.tl-points li{position:relative;padding-left:18px;font-size:14.5px;color:var(--text-2);}
.tl-points li::before{
  content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:2px;background:var(--primary);opacity:.85;
}

/* ---------- scenes ---------- */
.scene-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:48px;align-items:center;}
.scene-media{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--glass-line);box-shadow:var(--sh-2);position:relative;background:var(--bg-1);}
.scene-media img{width:100%;aspect-ratio:16/10;object-fit:cover;opacity:.85;}
.scene-media::after{content:"";position:absolute;inset:0;background:linear-gradient(200deg,rgba(90,107,255,.18),rgba(4,7,14,.55));}
.scene-list{display:grid;gap:16px;}
.scene-item{
  display:flex;gap:16px;padding:20px 22px;border-radius:16px;
  background:rgba(255,255,255,.04);border:1px solid var(--glass-line);
  transition:border-color .2s ease,transform .2s ease,background .2s ease;
}
.scene-item:hover{border-color:rgba(31,216,201,.4);background:rgba(31,216,201,.06);transform:translateX(4px);}
.scene-index{
  flex:0 0 32px;height:32px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:13px;font-weight:700;color:var(--primary);
  background:rgba(31,216,201,.1);border:1px solid rgba(31,216,201,.24);
}
.scene-item h3{font-size:16.5px;margin-bottom:6px;}
.scene-item p{font-size:14px;color:var(--text-2);}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:step;}
.step{
  position:relative;padding:28px 24px 26px;border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--glass-line);backdrop-filter:blur(16px);
}
.step::before{
  counter-increment:step;content:"0" counter(step);
  font-family:var(--mono);font-size:13px;font-weight:700;color:var(--primary);
  display:block;margin-bottom:14px;letter-spacing:1px;
}
.step h3{font-size:17px;margin-bottom:10px;}
.step p{font-size:14px;color:var(--text-2);}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:900px;}
.faq-item{
  border-radius:16px;background:var(--glass);border:1px solid var(--glass-line);
  backdrop-filter:blur(16px);overflow:hidden;transition:border-color .2s ease,background .2s ease;
}
.faq-item:hover{border-color:rgba(31,216,201,.36);}
.faq-item.is-open{border-color:rgba(31,216,201,.5);background:rgba(31,216,201,.05);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;text-align:left;font-size:15.5px;font-weight:600;color:var(--text-1);
}
.faq-item.is-open .faq-q{color:var(--primary);}
.faq-icon{position:relative;flex:0 0 18px;width:18px;height:18px;transition:transform .24s ease;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:currentColor;border-radius:2px;}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--primary);}
.faq-a{max-height:0;opacity:0;overflow:hidden;transition:max-height .3s ease,opacity .2s ease;}
.faq-item.is-open .faq-a{max-height:360px;opacity:1;}
.faq-a p{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--text-2);border-left:3px solid var(--primary);margin-left:22px;padding-left:16px;}

/* ---------- cta ---------- */
.cta-strip{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
  padding:34px 38px;border-radius:22px;
  background:linear-gradient(120deg,rgba(31,216,201,.14),rgba(90,107,255,.14));
  border:1px solid var(--glass-line);box-shadow:var(--sh-1);
}
.cta-strip h2{font-size:24px;margin-bottom:8px;}
.cta-strip p{color:var(--text-2);font-size:14.5px;}

/* ---------- related ---------- */
.rel-links{display:flex;flex-wrap:wrap;gap:12px;}
.chip{
  display:inline-flex;align-items:center;padding:10px 20px;border-radius:var(--r-pill);
  font-size:14px;color:var(--text-2);background:var(--glass);border:1px solid var(--glass-line);
  transition:color .18s ease,border-color .18s ease,transform .18s ease,background .18s ease;
}
.chip:hover{color:var(--primary);border-color:rgba(31,216,201,.5);transform:translateY(-2px);background:rgba(31,216,201,.08);}
.chip.is-current{color:#04121A;background:linear-gradient(120deg,var(--primary),var(--secondary));border-color:transparent;font-weight:600;}

/* ---------- footer ---------- */
.site-footer{
  margin-top:var(--sec-pc);
  padding:64px 0 30px;
  border-top:1px solid rgba(120,200,255,.12);
  background:linear-gradient(180deg,rgba(10,19,34,.6),rgba(4,7,14,.95));
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,216,201,.45),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{color:var(--text-3);font-size:14px;max-width:320px;margin-bottom:20px;}
.footer-contact{display:flex;gap:12px;}
.footer-contact a{
  width:38px;height:38px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--glass-line);color:var(--text-2);
  transition:color .2s ease,border-color .2s ease,transform .2s ease;
}
.footer-contact a:hover{color:var(--primary);border-color:rgba(31,216,201,.5);transform:translateY(-2px);}
.footer-contact svg{width:18px;height:18px;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text-1);}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:14px;color:var(--text-3);transition:color .18s ease;}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  padding-top:24px;border-top:1px solid rgba(120,200,255,.1);
  color:var(--text-3);font-size:13px;
}
.footer-quick{display:flex;gap:18px;flex-wrap:wrap;}
.footer-quick a:hover{color:var(--primary);}

/* ---------- responsive ---------- */
@media (max-width:1280px){
  .container{padding:0 22px;}
}
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .hero-copy h1{font-size:36px;}
  .cap-grid{grid-template-columns:repeat(2,1fr);}
  .scene-grid{grid-template-columns:1fr;gap:34px;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:72px 0;}
}
@media (max-width:768px){
  .nav-links{
    position:fixed;left:0;right:0;top:60px;bottom:0;
    flex-direction:column;align-items:stretch;gap:0;
    padding:14px 20px 100px;
    background:rgba(6,12,22,.96);backdrop-filter:blur(20px);
    border-top:1px solid var(--glass-line);
    transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:opacity .22s ease,transform .22s ease;
    overflow-y:auto;
  }
  .nav-links.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
  .nav-link{display:flex;align-items:center;justify-content:space-between;height:52px;border-radius:12px;font-size:16px;padding:0 16px;}
  .nav-link::after{content:"›";font-size:18px;color:var(--text-3);position:static;transform:none;box-shadow:none;background:none;width:auto;height:auto;}
  .nav-link.is-active{background:rgba(31,216,201,.12);}
  .nav-link.is-active::after{color:var(--primary);}
  .nav-actions .btn{display:none;}
  .burger{display:block;}
  .hero-copy h1{font-size:29px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:32px;}
  .section-head h2{font-size:26px;}
  .section{padding:var(--sec-mb) 0;}
  .timeline{padding-left:26px;}
  .timeline::before{left:5px;}
  .tl-dot{left:-26px;top:24px;width:9px;height:9px;}
  .tl-card{padding:22px 20px;}
  .cap-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .cta-strip{padding:26px 22px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .hero-copy h1{font-size:25px;}
  .hero-sub{font-size:15px;}
  .hero-actions .btn{width:100%;}
  .fact-num{font-size:20px;}
  .hero-facts{gap:20px;}
  .panel-chip{padding:11px 14px;}
  .panel-chip b{font-size:16px;}
  .chip-a,.chip-b{left:12px;right:12px;bottom:12px;}
  .chip-b{top:12px;bottom:auto;}
  .faq-q{font-size:14.5px;padding:16px 18px;}
  .faq-a p{margin-left:18px;padding-left:14px;padding-right:18px;}
}

/* roulang page: category4 */
:root{
  --bg-base:#04070E;
  --bg-1:#0A1322;
  --bg-2:#101C30;
  --glass:rgba(255,255,255,.055);
  --glass-2:rgba(255,255,255,.09);
  --glass-line:rgba(120,200,255,.16);
  --line-soft:rgba(120,200,255,.1);
  --primary:#1FD8C9;
  --primary-2:#38E9DA;
  --secondary:#5A6BFF;
  --accent:#FFC46B;
  --danger:#FF6B6B;
  --text-1:#E8F2FF;
  --text-2:#94AAC6;
  --text-3:#5C7290;
  --r-card:18px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(0,0,0,.38);
  --sh-2:0 20px 48px rgba(0,0,0,.5);
  --glow:0 0 0 1px rgba(31,216,201,.35),0 8px 28px rgba(31,216,201,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --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;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text-1);
  background:var(--bg-base);
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(620px 480px at 10% -8%,rgba(31,216,201,.16),transparent 65%),
    radial-gradient(700px 520px at 100% 8%,rgba(90,107,255,.14),transparent 62%),
    linear-gradient(180deg,#04070E 0%,#060C17 55%,#04070E 100%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:
    linear-gradient(rgba(120,200,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,200,255,.04) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 50% 25%,#000 25%,transparent 82%);
  mask-image:radial-gradient(circle at 50% 25%,#000 25%,transparent 82%);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.5px;line-height:1.25;font-weight:600}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(31,216,201,.3)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#060B15}
::-webkit-scrollbar-thumb{background:rgba(31,216,201,.28);border-radius:8px;border:2px solid #060B15}
::-webkit-scrollbar-thumb:hover{background:rgba(31,216,201,.45)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num,.time{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;padding:14px 20px 0;transition:padding .3s var(--ease)}
.nav-inner{
  max-width:1100px;margin:0 auto;height:64px;padding:0 18px;
  display:flex;align-items:center;gap:18px;
  border-radius:var(--r-pill);border:1px solid transparent;background:transparent;
  transition:height .3s var(--ease),background .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease),backdrop-filter .3s var(--ease);
}
.site-header.is-scrolled{padding-top:8px}
.site-header.is-scrolled .nav-inner{
  height:56px;background:rgba(10,19,34,.74);border-color:var(--glass-line);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);box-shadow:var(--sh-1);
}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;color:var(--text-1);white-space:nowrap}
.logo-mark{width:24px;height:24px;color:var(--primary);filter:drop-shadow(0 0 8px rgba(31,216,201,.5));flex:0 0 auto}
.logo-text{font-size:16px;letter-spacing:-.4px}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;padding:9px 14px;border-radius:var(--r-pill);
  font-size:14px;color:var(--text-2);white-space:nowrap;
  transition:background .22s var(--ease),color .22s var(--ease);
}
.nav-link:hover{background:rgba(31,216,201,.08);color:var(--text-1)}
.nav-link.is-active{background:rgba(31,216,201,.12);color:var(--primary)}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:18px;height:2px;border-radius:2px;background:var(--primary);
  box-shadow:0 0 10px rgba(31,216,201,.85);
}
.nav-actions{display:flex;align-items:center;gap:10px}
.burger{
  display:none;width:40px;height:36px;border-radius:10px;cursor:pointer;
  background:var(--glass);border:1px solid var(--glass-line);
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
  transition:background .22s var(--ease),border-color .22s var(--ease);
}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);transition:transform .22s var(--ease),opacity .22s var(--ease)}
.burger:hover{background:rgba(31,216,201,.1);border-color:rgba(31,216,201,.5)}
.burger.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),filter .18s var(--ease),color .18s var(--ease);
}
.btn-sm{padding:9px 16px;font-size:13.5px;border-radius:10px}
.btn-primary{background:linear-gradient(120deg,var(--primary),var(--secondary));color:#04140F;box-shadow:var(--glow)}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 0 1px rgba(31,216,201,.45),0 12px 34px rgba(31,216,201,.4)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(31,216,201,.3),0 4px 14px rgba(31,216,201,.24)}
.btn-ghost{background:var(--glass);border-color:var(--glass-line);color:var(--text-1);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(31,216,201,.6);background:rgba(31,216,201,.1)}
.btn-ghost:active{transform:translateY(1px)}
.link-more{color:var(--primary);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.link-more::after{content:"";width:16px;height:1px;background:currentColor;transition:width .22s var(--ease)}
.link-more:hover::after{width:26px}

/* ---------- sections ---------- */
main{padding-bottom:8px}
.section{padding:48px 0;scroll-margin-top:110px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;flex-wrap:wrap}
.section-head h2{font-size:34px}
.section-head p{color:var(--text-2);font-size:15px;max-width:620px;margin-top:10px}
.tag{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(31,216,201,.14);color:var(--primary);font-size:12px;font-weight:600;letter-spacing:.04em;
  border:1px solid rgba(31,216,201,.28);
}
.tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px rgba(31,216,201,.9)}

/* ---------- hero ---------- */
.hero{padding-top:44px}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-2);margin-bottom:22px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-2);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{width:1px;height:12px;background:var(--glass-line)}
.breadcrumb .now{color:var(--primary)}
.hero-grid{display:grid;grid-template-columns:1.35fr .85fr;gap:32px;align-items:start}
.hero h1{font-size:52px;line-height:1.16;margin:18px 0 0}
.hero h1 .hl{color:var(--primary);text-shadow:0 0 26px rgba(31,216,201,.35)}
.hero .lead{color:var(--text-2);font-size:16px;margin-top:16px;max-width:640px}
.hero-actions{display:flex;gap:14px;margin-top:26px;flex-wrap:wrap}
.hero-panel{
  border:1px solid var(--glass-line);border-radius:var(--r-card);
  background:var(--glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:var(--sh-2),inset 0 1px 0 rgba(255,255,255,.07);
  padding:26px;position:relative;overflow:hidden;
}
.hero-panel::before{
  content:"";position:absolute;inset:-40% -20% auto auto;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,216,201,.22),transparent 70%);
}
.panel-title{font-size:15px;color:var(--text-2);font-weight:600;letter-spacing:0;margin-bottom:16px}
.panel-list li{display:flex;align-items:baseline;gap:14px;padding:14px 0;border-bottom:1px solid var(--line-soft)}
.panel-list li:last-child{border-bottom:0;padding-bottom:0}
.panel-list .big{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:30px;font-weight:600;color:var(--primary);text-shadow:0 0 24px rgba(31,216,201,.35);min-width:92px}
.panel-list .lbl{font-size:13px;color:var(--text-2)}
.wide-figure{
  margin:36px 0 0;height:320px;border-radius:var(--r-card);overflow:hidden;position:relative;
  border:1px solid var(--glass-line);box-shadow:var(--sh-2);
}
.wide-figure img{width:100%;height:100%;object-fit:cover;opacity:.82}
.wide-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(4,7,14,.15),rgba(4,7,14,.72)),
             linear-gradient(120deg,rgba(31,216,201,.16),rgba(90,107,255,.14));
}
.wide-figure figcaption{
  position:absolute;left:26px;bottom:22px;z-index:2;font-size:14px;color:var(--text-1);
  max-width:70%;text-shadow:0 2px 14px rgba(0,0,0,.6);
}

/* ---------- anchor pills ---------- */
.anchor-bar{
  display:flex;flex-wrap:wrap;gap:10px;padding:14px;border-radius:var(--r-pill);
  border:1px solid var(--glass-line);background:var(--glass);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);box-shadow:var(--sh-1);
}
.anchor-pill{
  padding:9px 16px;border-radius:var(--r-pill);font-size:13.5px;color:var(--text-2);
  border:1px solid transparent;transition:all .22s var(--ease);
}
.anchor-pill:hover{color:var(--primary);border-color:rgba(31,216,201,.45);background:rgba(31,216,201,.08);transform:translateY(-2px)}

/* ---------- accordion groups ---------- */
.acc-groups{display:flex;flex-direction:column;gap:16px}
.acc-group{
  border:1px solid var(--glass-line);border-radius:var(--r-card);overflow:hidden;
  background:var(--glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.06);
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.acc-group.is-open{border-color:rgba(31,216,201,.34);box-shadow:var(--sh-2),inset 0 1px 0 rgba(255,255,255,.08)}
.acc-group-head{
  width:100%;display:flex;align-items:center;gap:16px;padding:20px 24px;
  background:none;border:0;color:var(--text-1);font-size:16px;font-weight:600;
  text-align:left;cursor:pointer;transition:background .22s var(--ease);
}
.acc-group-head:hover{background:rgba(31,216,201,.06)}
.acc-group-idx{font-family:var(--mono);font-size:13px;color:var(--primary);letter-spacing:.1em;flex:0 0 auto}
.acc-group-title{flex:1}
.acc-group-meta{
  flex:0 0 auto;font-size:12px;color:var(--text-3);padding:3px 10px;
  border:1px solid var(--glass-line);border-radius:var(--r-pill);
}
.chev{width:18px;height:18px;color:var(--text-2);flex:0 0 auto;transition:transform .24s var(--ease),color .24s var(--ease)}
.acc-group.is-open .chev{transform:rotate(180deg);color:var(--primary)}
.acc-group-body{display:grid;grid-template-rows:0fr;transition:grid-template-rows .34s var(--ease)}
.acc-group.is-open .acc-group-body{grid-template-rows:1fr}
.acc-group-body>div{overflow:hidden}

.acc-item{position:relative;border-top:1px solid var(--line-soft)}
.acc-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;border-radius:0 3px 3px 0;
  background:linear-gradient(180deg,var(--primary),rgba(31,216,201,0));
  opacity:0;transition:opacity .24s var(--ease);
}
.acc-item.is-open::before{opacity:1}
.acc-item-head{
  width:100%;display:flex;align-items:center;gap:12px;padding:16px 24px;
  background:none;border:0;color:var(--text-1);font-size:15px;text-align:left;cursor:pointer;
  transition:background .2s var(--ease);
}
.acc-item-head:hover{background:rgba(31,216,201,.06)}
.tri{
  flex:0 0 auto;width:0;height:0;margin-right:2px;
  border-left:7px solid var(--primary);border-top:5px solid transparent;border-bottom:5px solid transparent;
  transition:transform .22s var(--ease);
}
.acc-item.is-open .tri{transform:rotate(90deg)}
.acc-item-title{flex:1}
.acc-arrow{width:16px;height:16px;color:var(--text-3);flex:0 0 auto;transition:transform .22s var(--ease),color .22s var(--ease)}
.acc-item.is-open .acc-arrow{color:var(--primary);transform:translateX(4px)}
.acc-item-body{display:grid;grid-template-rows:0fr;transition:grid-template-rows .28s var(--ease)}
.acc-item.is-open .acc-item-body{grid-template-rows:1fr}
.acc-item-body>div{overflow:hidden}
.acc-item-body .inner{padding:2px 26px 22px 46px;color:var(--text-2);font-size:14.5px;line-height:1.85}
.acc-item-body .inner b{color:var(--text-1);font-weight:600}

/* ---------- cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  border:1px solid var(--glass-line);border-radius:var(--r-card);padding:28px;
  background:var(--glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(31,216,201,.4);box-shadow:var(--sh-2)}
.card-icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(31,216,201,.14);color:var(--primary);border:1px solid rgba(31,216,201,.26);margin-bottom:18px;
}
.card-icon svg{width:22px;height:22px}
.card h3{font-size:19px;margin-bottom:10px}
.card p{color:var(--text-2);font-size:14.5px;line-height:1.8}
.card .card-foot{margin-top:18px}

/* ---------- related ---------- */
.rel-block{padding:14px;border-radius:22px;border:1px solid var(--glass-line);background:var(--glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px)}
.rel-list{display:flex;gap:10px;flex-wrap:wrap}
.rel-pill{
  padding:11px 18px;border-radius:var(--r-pill);font-size:14px;color:var(--text-2);
  border:1px solid var(--glass-line);transition:all .22s var(--ease);
}
.rel-pill:hover{color:var(--primary);border-color:rgba(31,216,201,.5);background:rgba(31,216,201,.08);transform:translateY(-2px)}
.rel-pill.is-current{color:#04140F;background:linear-gradient(120deg,var(--primary),var(--secondary));border-color:transparent;font-weight:600;box-shadow:var(--glow)}

/* ---------- cta strip ---------- */
.cta-strip{
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
  padding:34px;border-radius:22px;border:1px solid var(--glass-line);
  background:linear-gradient(120deg,rgba(31,216,201,.12),rgba(90,107,255,.12));
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);box-shadow:var(--sh-2);
}
.cta-strip h2{font-size:26px;margin-bottom:8px}
.cta-strip p{color:var(--text-2);font-size:15px}

/* ---------- floating help ---------- */
.help-float{
  position:fixed;right:24px;bottom:24px;z-index:55;max-width:360px;
  display:flex;align-items:center;gap:14px;padding:14px 16px;border-radius:var(--r-card);
  border:1px solid var(--glass-line);background:rgba(10,19,34,.88);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);box-shadow:var(--sh-2);
  opacity:0;transform:translateY(16px);pointer-events:none;
  transition:opacity .3s var(--ease),transform .3s var(--ease);
}
.help-float.is-show{opacity:1;transform:none;pointer-events:auto}
.help-dot{width:10px;height:10px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px rgba(31,216,201,.9);flex:0 0 auto;animation:pulse 2.4s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.help-float strong{display:block;font-size:14px}
.help-float small{display:block;color:var(--text-2);font-size:12.5px;margin-top:2px}
.help-float .btn{margin-left:auto;flex:0 0 auto}

/* ---------- footer ---------- */
.site-footer{
  margin-top:84px;padding:56px 0 24px;
  border-top:1px solid var(--glass-line);
  background:linear-gradient(180deg,rgba(10,19,34,.62),rgba(4,7,14,.95));
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
.footer-brand p{color:var(--text-2);font-size:14px;line-height:1.8;margin-top:16px;max-width:320px}
.footer-contact{display:flex;gap:12px;margin-top:18px}
.footer-contact a{
  width:38px;height:38px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--glass-line);background:var(--glass);color:var(--text-2);
  transition:all .22s var(--ease);
}
.footer-contact a svg{width:18px;height:18px}
.footer-contact a:hover{color:var(--primary);border-color:rgba(31,216,201,.5);background:rgba(31,216,201,.1);transform:translateY(-2px)}
.footer-col h4{font-size:15px;margin-bottom:16px}
.footer-col ul li{margin-bottom:11px}
.footer-col ul a{color:var(--text-2);font-size:14px;transition:color .2s var(--ease),padding-left .2s var(--ease)}
.footer-col ul a:hover{color:var(--primary);padding-left:4px}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line-soft);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .quick{display:flex;gap:16px;flex-wrap:wrap}
.footer-bottom .quick a{color:var(--text-3);transition:color .2s var(--ease)}
.footer-bottom .quick a:hover{color:var(--primary)}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .hero h1{font-size:44px}
  .hero-grid{grid-template-columns:1.2fr .9fr;gap:26px}
}
@media (max-width:900px){
  .burger{display:flex}
  .nav-actions .btn-ghost{display:none}
  .nav-links{
    position:fixed;inset:0;z-index:55;margin-left:0;
    flex-direction:column;align-items:stretch;gap:0;
    padding:100px 24px 120px;
    background:rgba(4,7,14,.95);
    backdrop-filter:blur(22px);-webkit-backdrop-filter:blur(22px);
    transform:translateX(100%);
    transition:transform .22s var(--ease);
    overflow-y:auto;
  }
  .nav-links.is-open{transform:none}
  .nav-link{
    display:flex;align-items:center;justify-content:space-between;
    padding:16px 4px;font-size:16px;border-radius:0;
    border-bottom:1px solid var(--line-soft);
  }
  .nav-link::after{display:none}
  .nav-link.is-active{background:transparent}
  .nav-link.is-active::before{
    content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);
    box-shadow:0 0 8px rgba(31,216,201,.9);margin-left:8px;order:2;
  }
  .hero-grid{grid-template-columns:1fr}
  .hero h1{font-size:38px}
  .wide-figure{height:240px}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .section-head h2{font-size:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:768px){
  .footer-col h4{
    display:flex;align-items:center;justify-content:space-between;
    cursor:pointer;margin-bottom:0;padding:12px 0;
    border-bottom:1px solid var(--line-soft);
  }
  .footer-col h4::after{content:"+";color:var(--primary);font-size:18px;line-height:1;transition:transform .22s var(--ease)}
  .footer-col:not(.collapsed) h4::after{content:"–"}
  .footer-col ul{padding-top:12px}
  .footer-col.collapsed ul{display:none}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .site-header{padding:10px 12px 0}
  .logo-text{font-size:15px}
  .hero{padding-top:28px}
  .hero h1{font-size:30px;margin-top:14px}
  .hero .lead{font-size:15px}
  .hero-actions .btn{flex:1 1 auto}
  .wide-figure{height:180px;margin-top:26px}
  .wide-figure figcaption{left:18px;bottom:16px;font-size:13px;max-width:80%}
  .section{padding:36px 0}
  .section-head h2{font-size:26px}
  .grid-3{grid-template-columns:1fr}
  .card{padding:22px}
  .acc-group-head{padding:16px 18px;gap:12px;font-size:15px}
  .acc-group-meta{display:none}
  .acc-item-head{padding:14px 18px}
  .acc-item-body .inner{padding:0 18px 20px 40px}
  .cta-strip{padding:24px}
  .cta-strip h2{font-size:22px}
  .cta-strip .btn{width:100%}
  .help-float{left:16px;right:16px;bottom:16px;max-width:none}
  .help-float .btn{margin-left:auto}
  .footer-grid{grid-template-columns:1fr;gap:6px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:400px){
  .nav-actions .btn-primary{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
  html{scroll-behavior:auto}
}