:root {
  color-scheme: dark;
  --bg: #10151c;
  --panel: #18212b;
  --line: #334353;
  --text: #edf4f8;
  --muted: #b7c2ca;
  --gold: #e3b75b;
  --blue: #75bce8;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: radial-gradient(circle at top, #243445 0, var(--bg) 34rem);
  color: var(--text);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", sans-serif;
}
main { width: min(900px, calc(100% - 32px)); margin: 40px auto 80px; }
header, article {
  background: color-mix(in srgb, var(--panel) 94%, transparent);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: clamp(22px, 4vw, 42px);
  box-shadow: 0 18px 55px #0007;
}
article { margin-top: 18px; }
h1, h2 { line-height: 1.2; }
h1 { margin: 0 0 8px; color: var(--gold); }
h2 { margin-top: 1.8em; color: var(--blue); }
p, li { color: var(--muted); }
strong { color: var(--text); }
a { color: #94d2ff; }
nav { display: flex; flex-wrap: wrap; gap: 10px 18px; margin-top: 20px; }
nav a { text-decoration: none; font-weight: 650; }
.notice { border-left: 4px solid var(--gold); padding-left: 16px; }
footer { color: #8e9aa4; margin-top: 24px; text-align: center; font-size: 14px; }