:root{
  --primary:#004AC6;
  --secondary:#712AE2;
  --bg:#FAF8FF;
  --surface:#FFFFFF;
  --surface-container:#EAEDFF;
  --on-surface:#131B2E;
  --on-surface-variant:#434655;
  --outline:#737686;
  --outline-variant:#C3C6D7;
}
*{box-sizing:border-box;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);
  color:var(--on-surface);
  line-height:1.6;
}
a{color:var(--primary);}
header.nav{position:sticky;top:0;z-index:50;background:rgba(250,248,255,0.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--outline-variant);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 24px;max-width:900px;margin:0 auto;}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;text-decoration:none;color:var(--on-surface);}
.brand img{width:32px;height:32px;border-radius:9px;}
.back-link{font-size:14px;font-weight:700;text-decoration:none;color:var(--on-surface-variant);}
.back-link:hover{color:var(--primary);}
main{max-width:760px;margin:0 auto;padding:56px 24px 80px;}
.doc-header{margin-bottom:36px;}
.doc-header .kicker{color:var(--secondary);font-weight:800;letter-spacing:.06em;text-transform:uppercase;font-size:13px;}
.doc-header h1{font-size:clamp(28px,4vw,40px);margin:10px 0 8px;letter-spacing:-0.01em;}
.doc-header .updated{color:var(--outline);font-size:14px;}
article h2{font-size:20px;margin:36px 0 12px;color:var(--on-surface);}
article h3{font-size:16.5px;margin:22px 0 8px;}
article p, article li{color:var(--on-surface-variant);font-size:15.5px;}
article ul, article ol{padding-left:22px;}
article li{margin-bottom:8px;}
.callout{
  background:var(--surface-container);border-radius:14px;padding:18px 20px;font-size:14.5px;
  color:var(--on-surface);margin:24px 0;border-left:4px solid var(--primary);
}
footer.simple{border-top:1px solid var(--outline-variant);padding:28px 24px;text-align:center;font-size:13px;color:var(--outline);}