:root{
  --bg:#ffffff; --alt:#f6f8fc; --ink:#0a1020; --strong:#0a1020; --muted:#4b5567; --faint:#8891a3;
  --line:#e7eaf2; --line-soft:#eef1f7; --blue:#2f6bff; --blue-2:#1e57ee; --wash:#eef3ff;
  --grad:linear-gradient(135deg,#2f6bff 0%,#38b6ff 100%);
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  --sans:"Geist",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,system-ui,sans-serif;
  --maxw:820px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
::-webkit-scrollbar{width:11px;height:11px}
::-webkit-scrollbar-thumb{background:#cdd3df;border-radius:9px;border:3px solid transparent;background-clip:padding-box}

/* Topbar */
.topbar{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--bg) 85%,transparent);
  -webkit-backdrop-filter:blur(12px) saturate(1.5);backdrop-filter:blur(12px) saturate(1.5);border-bottom:1px solid var(--line)}
.topbar .row{display:flex;align-items:center;height:62px;max-width:1100px;margin:0 auto;padding:0 24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;letter-spacing:-.01em;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand .g{width:29px;height:29px;border-radius:8px;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:800}
.topbar .nav{margin-left:auto;display:flex;align-items:center;gap:22px}
.topbar .nav a{color:var(--muted);font-size:14.5px;font-weight:500}
.topbar .nav a:hover{color:var(--ink);text-decoration:none}
.topbar .nav a.cta{background:var(--grad);color:#fff;padding:9px 15px;border-radius:10px;font-weight:600}

/* Document */
.doc{padding:44px 0 80px}
.crumb{font-size:13px;color:var(--faint);margin:0 0 20px}
.crumb a{color:var(--faint)}
.doc h1{font-size:38px;line-height:1.1;letter-spacing:-.03em;font-weight:700;margin:0 0 8px}
.updated{color:var(--faint);font-size:13.5px;font-family:var(--mono);margin:0 0 30px}
.doc .intro{color:var(--muted);font-size:17px;margin:0 0 8px}
article h2{font-size:21px;letter-spacing:-.02em;margin:38px 0 10px;padding-top:16px;border-top:1px solid var(--line-soft);font-weight:660}
article h2:first-of-type{border-top:0;padding-top:0}
article h3{font-size:16.5px;margin:22px 0 6px;font-weight:640}
article p{margin:10px 0;color:#2b3243}
article ul,article ol{margin:10px 0;padding-left:22px;color:#2b3243}
article li{margin:6px 0}
article strong{color:var(--strong);font-weight:640}
.ph{background:#fff4d6;color:#7a5600;border:1px solid #f0d98a;border-radius:4px;padding:0 5px;font-size:.92em;font-weight:600}
.note{background:var(--wash);border:1px solid color-mix(in srgb,var(--blue) 18%,var(--line));border-radius:12px;padding:14px 18px;margin:20px 0;font-size:14.5px;color:#28324a}
table{width:100%;border-collapse:collapse;margin:16px 0;font-size:14.5px;display:block;overflow-x:auto}
th,td{text-align:left;padding:10px 13px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--faint);font-weight:600}

/* Footer */
.foot{border-top:1px solid var(--line);background:var(--alt);padding:34px 0}
.foot .wrap{max-width:1100px;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.legal-links{display:flex;gap:20px;flex-wrap:wrap}
.legal-links a{color:var(--muted);font-size:14px}
.legal-links a:hover{color:var(--ink);text-decoration:none}
.foot .copy{color:var(--faint);font-size:13px}

@media(max-width:640px){
  .doc h1{font-size:29px}
  .topbar .nav a:not(.cta){display:none}
  .foot .wrap{justify-content:center;text-align:center}
}