:root {
  --bg: #ffffff;
  --fg: #1d2330;
  --muted: #5b6475;
  --accent: #0f6b5c;
  --line: #e3e7ee;
  --card: #f6f8fb;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #11151c;
    --fg: #e8ecf2;
    --muted: #a3acbb;
    --accent: #4fc3a8;
    --line: #273040;
    --card: #181e28;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
header, main, footer { max-width: 52rem; margin: 0 auto; padding: 0 1rem; }
header { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; justify-content: space-between; padding-top: 1.25rem; padding-bottom: 1.25rem; border-bottom: 1px solid var(--line); }
.brand { font-weight: 700; font-size: 1.15rem; color: var(--fg); text-decoration: none; letter-spacing: 0.02em; }
nav { display: flex; flex-wrap: wrap; gap: 1rem; font-size: 0.95rem; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover, nav a[aria-current="page"] { color: var(--accent); }
main { padding-top: 2rem; padding-bottom: 3rem; }
h1 { font-size: clamp(1.6rem, 4vw, 2.2rem); line-height: 1.25; margin: 0 0 0.5rem; }
h2 { font-size: 1.25rem; margin: 2rem 0 0.5rem; }
h3 { font-size: 1.05rem; margin: 1.5rem 0 0.25rem; }
.lead { font-size: 1.1rem; color: var(--muted); }
.updated { color: var(--muted); font-size: 0.9rem; }
.cards { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); margin-top: 1.5rem; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 1rem 1.25rem; }
.card h3 { margin-top: 0; }
table { width: 100%; border-collapse: collapse; margin: 1rem 0; font-size: 0.95rem; }
th, td { text-align: left; vertical-align: top; padding: 0.5rem; border-bottom: 1px solid var(--line); }
.table-wrap { overflow-x: auto; }
footer { border-top: 1px solid var(--line); padding-top: 1.25rem; padding-bottom: 2rem; color: var(--muted); font-size: 0.9rem; }
footer p { margin: 0.25rem 0; }