:root {
  --bg: #fbfaf7;
  --text: #1d1d1f;
  --muted: #5f5f66;
  --line: #e6e3dc;
  --accent: #2f5d50;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141414;
    --text: #ededed;
    --muted: #a3a3a8;
    --line: #2c2c2e;
    --accent: #8cc2b0;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
main {
  max-width: 680px;
  margin: 0 auto;
  padding: 56px 20px 80px;
}
nav {
  display: flex;
  gap: 20px;
  font-size: 15px;
  margin-bottom: 48px;
}
nav a { color: var(--muted); text-decoration: none; }
nav a:hover, nav a[aria-current="page"] { color: var(--text); }
h1 { font-size: 32px; line-height: 1.2; margin: 0 0 8px; letter-spacing: -0.01em; }
h2 { font-size: 19px; margin: 36px 0 8px; }
p, li { color: var(--text); }
.meta { color: var(--muted); font-size: 15px; margin: 0 0 32px; }
a { color: var(--accent); }
ul { padding-left: 22px; }
footer {
  margin-top: 64px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}