:root {
  --bg: #fbfaf8;
  --fg: #1c1b22;
  --muted: #5d5b66;
  --line: #e3e0da;
  --accent: #5b3fd6;
  --card: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f0f13;
    --fg: #ecebf2;
    --muted: #a3a1b0;
    --line: #2a2933;
    --accent: #9d86ff;
    --card: #17161d;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
header, main, footer { max-width: 760px; margin: 0 auto; padding: 0 16px; }
header { display: flex; align-items: center; justify-content: space-between; padding-top: 20px; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.brand { font-weight: 700; letter-spacing: .01em; color: var(--fg); text-decoration: none; font-size: 1.1rem; }
nav a { margin-left: 16px; font-size: .95rem; }
main { padding-top: 32px; padding-bottom: 48px; }
h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 1.25rem; margin: 32px 0 8px; }
p, li { max-width: 68ch; }
.lead { font-size: 1.15rem; color: var(--muted); }
.meta { color: var(--muted); font-size: .9rem; }
.notice { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px 16px; margin: 20px 0; }
table { border-collapse: collapse; width: 100%; margin: 12px 0; font-size: .95rem; }
th, td { text-align: left; vertical-align: top; padding: 8px 10px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 600; }
.cards { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); margin: 20px 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; }
.card h3 { margin: 0 0 4px; font-size: 1rem; }
.card p { margin: 0; color: var(--muted); font-size: .95rem; }
footer { padding-top: 16px; padding-bottom: 32px; border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; }
footer a { margin-right: 14px; }