:root {
  --bg: #fbfaf8;
  --text: #1d1d1f;
  --muted: #5f5f66;
  --line: #e4e2dd;
  --accent: #2f5bd3;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141416;
    --text: #ececef;
    --muted: #a1a1aa;
    --line: #2c2c31;
    --accent: #8aa8ff;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 0 16px; }
header { border-bottom: 1px solid var(--line); }
header .wrap { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding-top: 18px; padding-bottom: 18px; flex-wrap: wrap; }
.brand { font-weight: 650; color: var(--text); text-decoration: none; }
nav a { color: var(--muted); text-decoration: none; margin-left: 18px; font-size: 15px; }
nav a:first-child { margin-left: 0; }
nav a:hover, nav a[aria-current] { color: var(--text); }
main { padding: 48px 0 64px; }
h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 8px; letter-spacing: -0.01em; }
h2 { font-size: 1.2rem; margin: 40px 0 8px; }
.lede { font-size: 1.15rem; color: var(--muted); margin-top: 0; }
.meta { color: var(--muted); font-size: 15px; }
a { color: var(--accent); }
ul { padding-left: 1.2em; }
li { margin: 4px 0; }
footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
footer .wrap { padding-top: 20px; padding-bottom: 32px; }