:root{
  --t-bg:#eef5fb;
  --t-card:#ffffff;
  --t-text:#0f172a;
  --t-muted:#475569;
  --t-line:#e2e8f0;
  --t-accent:#0ea5a5;
  --t-accent-2:#2563eb;
  --t-shadow: 0 12px 30px rgba(15,23,42,.10);
  --t-radius: 18px;
  --t-font: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}
*{box-sizing:border-box}
body{margin:0; font-family:var(--t-font); color:var(--t-text); background: var(--t-bg);}
a{color:var(--t-accent-2); text-decoration:none}
a:hover{text-decoration:underline}

.container{max-width:1200px; margin:0 auto; padding:22px 18px}

.site-header{
  position:sticky; top:0; z-index:50;
  background: rgba(238,245,251,.90);
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--t-line);
}
.header-inner{display:flex; align-items:center; justify-content:space-between; gap:14px}
.brand{display:flex; flex-direction:column; gap:2px}
.brand .l1{font-weight:900}
.brand .l2{color:var(--t-muted); font-weight:800}

.nav{display:flex; gap:10px; align-items:center; flex-wrap:wrap}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:10px 14px; border-radius:999px;
  font-weight:900; border:1px solid transparent;
  min-height:40px; text-decoration:none !important;
}
.btn-primary{background: linear-gradient(135deg,var(--t-accent), var(--t-accent-2)); color:#fff !important; box-shadow:0 10px 22px rgba(37,99,235,.18)}
.btn-ghost{background:#fff; border-color:var(--t-line); color:var(--t-text) !important}

main{padding: 18px 0 28px}

.site-footer{
  border-top:1px solid var(--t-line);
  background:#fff;
}
.footer-grid{
  display:grid; grid-template-columns: 1.2fr .8fr; gap:14px;
  padding:18px 0;
}
@media (max-width:920px){ .footer-grid{grid-template-columns:1fr} }
.footer-card{
  border:1px solid var(--t-line);
  border-radius: var(--t-radius);
  padding:14px 16px;
  background: linear-gradient(180deg, rgba(14,165,165,.06), rgba(37,99,235,.03));
}
.footer-card h3{margin:0 0 8px; font-size:16px}
.footer-card p{margin:0; color:var(--t-muted); line-height:1.6}
.small{color:var(--t-muted); font-size:13px}