:root {
  --bg: #f7f5f0;
  --fg: #22261f;
  --muted: #646b5d;
  --accent: #2f6b3a;
  --card: #ffffff;
  --line: #e2ddd2;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #171a16;
    --fg: #e6e8e1;
    --muted: #a3aa9b;
    --accent: #7fbf87;
    --card: #20241e;
    --line: #333a30;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.6 -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }
header { border-bottom: 1px solid var(--line); padding: 18px 0; }
header .wrap { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 8px 24px; }
.logo { font-weight: 700; font-size: 20px; color: var(--fg); text-decoration: none; }
.logo span { color: var(--accent); }
nav a { color: var(--muted); text-decoration: none; margin-right: 18px; }
nav a:last-child { margin-right: 0; }
nav a[aria-current="page"], nav a:hover { color: var(--accent); }
main { padding: 32px 0 48px; }
h1 { font-size: 30px; line-height: 1.25; margin: 0 0 12px; }
h2 { font-size: 22px; margin: 36px 0 10px; }
p { margin: 0 0 14px; }
.lead { font-size: 19px; color: var(--muted); }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 18px 20px;
  margin: 14px 0;
}
.card h3 { margin: 0 0 6px; font-size: 19px; }
.meta { color: var(--muted); font-size: 15px; margin-bottom: 8px; }
.next { border-left: 4px solid var(--accent); padding-left: 14px; }
ul { padding-left: 22px; }
li { margin-bottom: 6px; }
a { color: var(--accent); }
footer { border-top: 1px solid var(--line); padding: 18px 0 28px; color: var(--muted); font-size: 14px; }