:root{
  --bg:#F7F5F1; --surface:#ffffff; --text:#1D1D1F; --muted:#6E6E73;
  --accent:#5B8DEF; --success:#5AA86F; --border:#E7E3DC; --radius:20px;
}
@media (prefers-color-scheme: dark){
  :root{ --bg:#0E0F12; --surface:#1A1C21; --text:#F2F1EE; --muted:#9A9AA0;
    --accent:#7AA5F5; --success:#74C08A; --border:#2C2F36; }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--bg); color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  line-height:1.65; -webkit-font-smoothing:antialiased;
}
.wrap{max-width:720px; margin:0 auto; padding:32px 20px 80px}
header.site{display:flex; align-items:center; gap:14px; padding:8px 0 28px}
.mark{width:52px;height:52px;border-radius:15px;flex:0 0 auto;
  background:linear-gradient(135deg,#6FA0F0,#4E7FE0);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 24px rgba(79,127,224,.35)}
.mark svg{width:30px;height:30px}
header.site h1{font-size:20px;margin:0;font-weight:700}
header.site .sub{color:var(--muted);font-size:13px;margin-top:2px}
nav{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:28px}
nav a{font-size:14px;text-decoration:none;color:var(--accent);
  background:color-mix(in srgb,var(--accent) 12%,transparent);
  padding:7px 14px;border-radius:100px;font-weight:500}
.card{background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:28px;margin-bottom:20px;
  box-shadow:0 6px 20px rgba(0,0,0,.04)}
h2{font-size:26px;margin:0 0 6px;font-weight:700;letter-spacing:-.02em}
h3{font-size:17px;margin:26px 0 8px;font-weight:600}
p,li{color:var(--text);font-size:15.5px}
p.lead{color:var(--muted);font-size:16px}
.muted{color:var(--muted)}
ul{padding-left:22px}
li{margin:6px 0}
a{color:var(--accent)}
.pill{display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:600;
  color:var(--success);background:color-mix(in srgb,var(--success) 14%,transparent);
  padding:6px 12px;border-radius:100px;margin-bottom:18px}
.footer{color:var(--muted);font-size:13px;text-align:center;margin-top:36px}
.footer a{color:var(--muted)}
hr{border:none;border-top:1px solid var(--border);margin:26px 0}
.faq h3{margin-top:22px}