:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --text: #171c26;
  --muted: #5c6470;
  --link: #0e7490;
  --border: #e2e5ec;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1424;
    --text: #f2f4f8;
    --muted: #9aa4b5;
    --link: #22d3ee;
    --border: #232e45;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0 auto;
  padding: 48px 24px 96px;
  max-width: 720px;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
h1 { font-size: 28px; line-height: 1.25; }
h2 { font-size: 20px; margin-top: 2em; }
h3 { font-size: 17px; margin-top: 1.5em; }
a { color: var(--link); }
strong { font-weight: 650; }
.muted { color: var(--muted); font-size: 14px; }
.disclaimer {
  margin-top: 3em;
  padding-top: 1.5em;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 14px;
}