:root {
  --bg: #fafaf8; --fg: #1c1f24; --muted: #5d636b; --accent: #2a5592; --rule: #e2e2dc;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #15171b; --fg: #e7e7e3; --muted: #a2a7ae; --accent: #8db4ec; --rule: #2b2f35; }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 17px/1.6 Georgia, "Times New Roman", serif;
}
main { max-width: 720px; margin: 0 auto; padding: 48px 16px 80px; }
header { border-bottom: 1px solid var(--rule); margin-bottom: 32px; padding-bottom: 16px; }
header a { color: var(--fg); text-decoration: none; font: 600 20px/1 system-ui, sans-serif; }
h1 { font: 600 32px/1.2 system-ui, sans-serif; margin: 0 0 8px; }
h2 { font: 600 20px/1.3 system-ui, sans-serif; margin: 32px 0 8px; }
.meta { color: var(--muted); font-size: 15px; }
.lead { font-size: 19px; }
a { color: var(--accent); }
footer { border-top: 1px solid var(--rule); margin-top: 48px; padding-top: 16px;
  color: var(--muted); font: 14px/1.5 system-ui, sans-serif; }
footer a { margin-right: 16px; }
footer p { margin: 12px 0 0; }