:root {
  --bg: #fbfaf7;
  --fg: #1d2320;
  --muted: #5b645f;
  --line: #e2e0d8;
  --card: #ffffff;
  --accent: #2f6b4f;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141816;
    --fg: #e8ebe9;
    --muted: #a3aca7;
    --line: #2a302d;
    --card: #1b201d;
    --accent: #7cc4a0;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
.wrap { max-width: 880px; margin: 0 auto; padding: 0 20px; }
.top, .foot {
  display: flex; flex-wrap: wrap; gap: 12px;
  justify-content: space-between; align-items: center;
  padding-top: 20px; padding-bottom: 20px;
}
.top { border-bottom: 1px solid var(--line); }
.brand { font-weight: 700; color: var(--fg); text-decoration: none; }
nav { display: flex; gap: 18px; }
nav a { text-decoration: none; color: var(--muted); }
nav a:hover { color: var(--accent); }
.hero { padding: 64px 0 24px; }
h1 { font-size: clamp(2rem, 5vw, 2.8rem); line-height: 1.15; margin: 0 0 16px; }
h2 { font-size: 1.4rem; margin: 48px 0 16px; }
h3 { margin: 0 0 8px; font-size: 1.1rem; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 640px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 16px; }
.card {
  display: block; padding: 20px; background: var(--card);
  border: 1px solid var(--line); border-radius: 10px;
  color: var(--fg); text-decoration: none;
}
.card:hover { border-color: var(--accent); }
.card p { color: var(--muted); margin: 0 0 12px; font-size: .95rem; }
.card span { color: var(--accent); font-size: .9rem; }
dl { display: grid; grid-template-columns: max-content 1fr; gap: 8px 24px; margin: 0; }
dt { color: var(--muted); }
dd { margin: 0; }
.foot { border-top: 1px solid var(--line); margin-top: 64px; color: var(--muted); font-size: .9rem; }
.foot p { margin: 0; }
.doc h1 { font-size: 2rem; margin-top: 48px; }
.doc h2 { font-size: 1.2rem; margin-top: 32px; }