:root {
  color-scheme: light dark;
  --fg: #1a1a1a;
  --bg: #fafaf7;
  --muted: #5b6b5b;
  --accent: #2e7d32;
  --border: #e1e5e1;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fg: #ececec;
    --bg: #121412;
    --muted: #9aa89a;
    --accent: #81c784;
    --border: #2a2e2a;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--fg);
  background: var(--bg);
  padding: 2rem 1rem 4rem;
}
main {
  max-width: 44rem;
  margin: 0 auto;
}
nav.crumbs {
  font-size: 0.875rem;
  color: var(--muted);
  margin-bottom: 1.5rem;
}
nav.crumbs a { color: var(--accent); text-decoration: none; }
nav.crumbs a:hover { text-decoration: underline; }
h1 {
  margin: 0 0 0.25rem;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  color: var(--accent);
}
.updated {
  color: var(--muted);
  font-size: 0.875rem;
  margin-bottom: 2rem;
}
h2 {
  margin-top: 2.5rem;
  font-size: 1.25rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.25rem;
}
h3 { margin-top: 1.5rem; font-size: 1.05rem; }
p, ul, ol { margin: 0.75rem 0; }
ul, ol { padding-left: 1.5rem; }
a { color: var(--accent); }
table {
  border-collapse: collapse;
  width: 100%;
  margin: 1rem 0;
  font-size: 0.95rem;
}
th, td {
  text-align: left;
  vertical-align: top;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border);
}
th { color: var(--muted); font-weight: 600; }
.todo {
  background: rgba(255, 200, 0, 0.15);
  border-left: 3px solid #d4a017;
  padding: 0.5rem 0.75rem;
  margin: 0.5rem 0;
  font-size: 0.9rem;
}
footer {
  margin-top: 4rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.875rem;
  color: var(--muted);
  text-align: center;
}
footer a { color: var(--muted); margin: 0 0.5rem; }