:root {
  --bg: #f6f7fb;
  --surface: #ffffff;
  --text: #1b2236;
  --muted: #5b6478;
  --brand: #3d6ff2;
  --border: #e3e7f0;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1525;
    --surface: #172036;
    --text: #eef1f8;
    --muted: #a7b0c4;
    --brand: #7c9dff;
    --border: #26314d;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }
header { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
header img { width: 48px; height: 48px; border-radius: 12px; }
header a { color: inherit; text-decoration: none; font-weight: 800; font-size: 20px; }
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 21px; margin: 36px 0 8px; }
h3 { font-size: 17px; margin: 20px 0 4px; }
p, li { color: var(--text); }
.muted { color: var(--muted); }
a { color: var(--brand); }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 4px 20px; margin: 16px 0; }
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; }
.table-wrap { overflow-x: auto; }
footer { margin-top: 48px; color: var(--muted); font-size: 14px; }
footer a { margin-right: 16px; }