:root {
  --bg: #fafaf9;
  --card: #ffffff;
  --text: #292524;
  --muted: #57534e;
  --accent: #0f766e;
  --border: #e7e5e4;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1917;
    --card: #292524;
    --text: #f5f5f4;
    --muted: #a8a29e;
    --accent: #2dd4bf;
    --border: #44403c;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
}
main {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}
h1 { font-size: 1.6rem; margin-bottom: 0.25rem; }
h2 { font-size: 1.15rem; margin-top: 2rem; }
h3 { font-size: 1rem; margin-top: 1.5rem; }
a { color: var(--accent); }
.meta { color: var(--muted); font-size: 0.85rem; }
li { margin: 0.3rem 0; }
.back { display: inline-block; margin-bottom: 1.5rem; font-size: 0.9rem; text-decoration: none; }
.caps { font-size: 0.9rem; }
footer { margin-top: 3rem; padding-top: 1rem; border-top: 1px solid var(--border); color: var(--muted); font-size: 0.8rem; }