:root{
  --navy:#0e1726;
  --navy-3:#1b2942;
  --ink:#16223a;
  --red:#ff4d5e;
  --red-dark:#e23847;
  --page:#eceef2;
  --card:#ffffff;
  --text:#374151;
  --muted:#6b7280;
  --line:#e5e7eb;
  --radius:14px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--text);
  background:var(--page);
  line-height:1.7;
}
a{color:var(--red);text-decoration:none;}
a:hover{text-decoration:underline;}
.wrap{max-width:820px;margin:0 auto;padding:0 22px;}

/* Header */
header.site{background:var(--navy);position:sticky;top:0;z-index:50;border-bottom:1px solid rgba(255,255,255,.06);}
.nav{display:flex;align-items:center;justify-content:space-between;height:62px;max-width:1120px;margin:0 auto;padding:0 22px;}
.logo{display:flex;align-items:center;gap:9px;font-weight:800;font-size:20px;color:#fff;letter-spacing:.2px;}
.logo,.logo:hover{text-decoration:none;}
.logo .mark{width:26px;height:26px;object-fit:contain;display:block;}
.logo .name span{color:var(--red);}
.geo{display:flex;align-items:center;gap:6px;background:var(--navy-3);color:#cdd6e6;padding:7px 14px;border-radius:999px;font-size:13px;font-weight:600;border:1px solid rgba(255,255,255,.08);}
.geo .dot{color:var(--red);}

/* Page hero */
.page-hero{background:var(--navy);color:#fff;padding:48px 0 40px;text-align:center;}
.page-hero h1{font-size:clamp(28px,4vw,40px);margin:0 0 10px;font-weight:800;letter-spacing:-.4px;}
.page-hero p.updated{color:#8b97ab;font-size:13px;margin:0;letter-spacing:.3px;}

/* Article */
main{padding:40px 0 60px;}
.doc{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:36px 40px;}
@media(max-width:560px){.doc{padding:26px 20px;}}
.doc .lead{font-size:17px;color:var(--ink);margin:0 0 26px;}
.doc h2{font-size:21px;color:var(--ink);font-weight:800;margin:34px 0 12px;padding-bottom:8px;border-bottom:2px solid var(--page);}
.doc h2:first-of-type{margin-top:0;}
.doc h3{font-size:16px;color:var(--ink);font-weight:800;margin:22px 0 8px;}
.doc p{margin:0 0 14px;font-size:15.5px;}
.doc ul,.doc ol{margin:0 0 16px;padding-left:22px;}
.doc li{margin:0 0 8px;font-size:15.5px;}
.doc strong{color:var(--ink);}
.doc .callout{background:#fff5f6;border-left:4px solid var(--red);border-radius:0 8px 8px 0;padding:14px 18px;margin:0 0 20px;font-size:15px;}
.doc .contact-box{background:var(--page);border-radius:10px;padding:16px 20px;margin:8px 0 20px;}
.doc .contact-box p{margin:4px 0;}
.doc .toc{background:var(--page);border-radius:10px;padding:16px 20px;margin:0 0 28px;}
.doc .toc h4{margin:0 0 10px;font-size:12px;text-transform:uppercase;letter-spacing:.8px;color:var(--muted);font-weight:800;}
.doc .toc ol{margin:0;padding-left:20px;columns:2;}
@media(max-width:560px){.doc .toc ol{columns:1;}}
.doc .toc li{margin:0 0 5px;font-size:14px;}
.back-home{display:inline-block;margin-top:26px;font-weight:700;font-size:14px;}

/* Footer */
footer.site{background:var(--navy);color:#9aa6ba;padding:40px 0 30px;text-align:center;}
.foot-links{display:flex;gap:26px;justify-content:center;flex-wrap:wrap;margin-bottom:18px;}
.foot-links a{font-size:13px;font-weight:600;color:#c2cbdb;letter-spacing:.4px;text-decoration:none;}
.foot-links a:hover{color:var(--red);}
.foot-copy{font-size:12.5px;color:#6b7689;line-height:1.7;}
.foot-copy b{color:var(--red);}
.age{display:inline-block;margin-top:14px;font-size:11px;border:1px solid rgba(255,255,255,.14);border-radius:999px;padding:5px 14px;color:#8b97ab;}