:root {
  --bg: #f7f6f2;
  --surface: #ffffff;
  --text: #1d1f24;
  --muted: #5d6270;
  --line: #e2e0d8;
  --accent: #2f5d50;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171b;
    --surface: #1d2026;
    --text: #e9e9ec;
    --muted: #a3a8b4;
    --line: #2e323a;
    --accent: #8cc7b5;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

main {
  max-width: 46rem;
  margin: 0 auto;
  padding: 2.5rem 16px 4rem;
}

header.site {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: .5rem 1.5rem;
  padding-bottom: 1rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--line);
}

header.site a.brand {
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--text);
  text-decoration: none;
}

nav { display: flex; flex-wrap: wrap; gap: .25rem 1rem; font-size: .95rem; }

a { color: var(--accent); }

h1 { font-size: 1.9rem; line-height: 1.25; margin: 0 0 .25rem; }
h2 { font-size: 1.2rem; margin: 2.2rem 0 .5rem; }

.updated { color: var(--muted); font-size: .95rem; margin: 0 0 1.5rem; }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}

ul { padding-left: 1.25rem; }
li + li { margin-top: .3rem; }

footer {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .9rem;
}