:root {
  --bg: #fafaf9;
  --fg: #1c1917;
  --muted: #57534e;
  --line: #e7e5e4;
  --card: #ffffff;
  --accent: #2563eb;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c0a09;
    --fg: #f5f5f4;
    --muted: #a8a29e;
    --line: #292524;
    --card: #1c1917;
    --accent: #60a5fa;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.wrap { max-width: 44rem; margin: 0 auto; padding: 0 1rem; }
header.site { padding: 1.5rem 0; border-bottom: 1px solid var(--line); }
header.site .wrap { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
header.site a.brand { font-weight: 700; color: var(--fg); text-decoration: none; }
nav a { color: var(--muted); text-decoration: none; margin-left: 1.25rem; }
nav a:hover { color: var(--accent); }
main { padding: 2.5rem 0 3rem; }
h1 { font-size: 2.2rem; line-height: 1.2; margin: 0 0 .5rem; }
h2 { font-size: 1.35rem; margin: 2.25rem 0 .75rem; }
h3 { font-size: 1.05rem; margin: 1.5rem 0 .5rem; }
p, ul { margin: .75rem 0; }
a { color: var(--accent); }
.lead { font-size: 1.2rem; color: var(--muted); }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.25rem 1.4rem;
  margin: 1rem 0;
}
.card h3 { margin-top: 0; }
.card a.title { color: var(--fg); text-decoration: none; }
.card a.title:hover { color: var(--accent); }
.tags { color: var(--muted); font-size: .9rem; }
.muted { color: var(--muted); }
footer { border-top: 1px solid var(--line); padding: 1.5rem 0 2.5rem; color: var(--muted); font-size: .9rem; }
footer a { color: var(--muted); }