:root {
  color-scheme: light dark;
  --fg: #1a1a1a;
  --muted: #5a5a5a;
  --bg: #ffffff;
  --line: #e0e0e0;
  --accent: #0b5cad;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fg: #e8e8e8;
    --muted: #a0a0a0;
    --bg: #141414;
    --line: #2e2e2e;
    --accent: #6db3f2;
  }
}
* { box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: var(--fg);
  background: var(--bg);
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}
header { border-bottom: 1px solid var(--line); padding-bottom: 1rem; }
header h1 { font-size: 2rem; margin: 0 0 0.25rem; letter-spacing: -0.02em; }
header p { color: var(--muted); margin: 0 0 0.75rem; }
nav a { margin-right: 1rem; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
section { padding: 1.5rem 0; border-bottom: 1px solid var(--line); }
h2 { font-size: 1.2rem; margin: 0 0 0.75rem; letter-spacing: -0.01em; }
ul, ol { padding-left: 1.4rem; margin: 0.5rem 0; }
code { font-size: 0.9em; background: color-mix(in srgb, var(--line) 35%, transparent); padding: 0.1em 0.35em; border-radius: 4px; }
table { border-collapse: collapse; width: 100%; font-size: 0.9rem; margin: 0.75rem 0; }
th, td { border: 1px solid var(--line); padding: 0.4rem 0.6rem; text-align: left; }
th { font-weight: 600; background: color-mix(in srgb, var(--line) 35%, transparent); }
footer { color: var(--muted); font-size: 0.85rem; padding-top: 1rem; }
@media (max-width: 560px) {
  body { padding: 1.25rem 1rem 3rem; }
  table { font-size: 0.8rem; }
}