:root {
  --bg: #fbfaf8;
  --fg: #1d1d1f;
  --muted: #5f6368;
  --accent: #6b4fd8;
  --card: #ffffff;
  --border: #e6e3de;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141416;
    --fg: #ececef;
    --muted: #a0a0a8;
    --accent: #a896ff;
    --card: #1c1c20;
    --border: #2c2c32;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 760px; margin: 0 auto; padding: 48px 16px 64px; }
header { margin-bottom: 32px; }
h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 1.25rem; margin: 32px 0 8px; }
p, li { color: var(--fg); }
.muted { color: var(--muted); }
a { color: var(--accent); }
nav { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 16px; font-size: .95rem; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 20px;
  margin: 12px 0;
}
ul { padding-left: 20px; }
hr { border: 0; border-top: 1px solid var(--border); margin: 48px 0; }
footer { margin-top: 48px; font-size: .9rem; color: var(--muted); }