:root {
  --bg: #fbfaf7;
  --text: #1d1c1a;
  --muted: #6b6862;
  --line: #e6e2da;
  --accent: #2f5d50;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141413;
    --text: #ecebe7;
    --muted: #a19d95;
    --line: #2c2b28;
    --accent: #8cc4b2;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}

main {
  max-width: 680px;
  margin: 0 auto;
  padding: 48px 16px 64px;
}

nav {
  display: flex;
  gap: 20px;
  font-size: 15px;
  margin-bottom: 40px;
}

nav a:first-child { font-weight: 600; margin-right: auto; }

a { color: var(--accent); }
nav a { text-decoration: none; }

h1 { font-size: 32px; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 21px; margin: 40px 0 8px; }
h3 { font-size: 17px; margin: 24px 0 4px; }

.lede { font-size: 19px; color: var(--muted); margin: 0 0 32px; }
.meta { color: var(--muted); font-size: 15px; }

ul { padding-left: 22px; }
li { margin: 4px 0; }

footer {
  border-top: 1px solid var(--line);
  margin-top: 56px;
  padding-top: 16px;
  color: var(--muted);
  font-size: 14px;
}