:root {
  color-scheme: light dark;
  --bg: #f8f9fa;
  --fg: #131314;
  --muted: #6b6b70;
  --border: #e9ecef;
  --link: #0a66c2;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131314;
    --fg: #f8f9fa;
    --muted: #b6b6bd;
    --border: #2a2a2d;
    --link: #66b3ff;
  }
}
* { box-sizing: border-box; }
html, body {
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  margin: 0;
  padding: 0;
  -webkit-text-size-adjust: 100%;
}
main {
  max-width: 720px;
  margin: 0 auto;
  padding: 64px 24px 96px;
}
h1 {
  font-size: 32px;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}
h2 {
  font-size: 22px;
  letter-spacing: -0.01em;
  margin: 40px 0 12px;
}
h3 {
  font-size: 17px;
  margin: 24px 0 8px;
  color: var(--fg);
}
p, li { color: var(--fg); }
.muted, .contact, .meta { color: var(--muted); }
.meta { font-size: 14px; margin-top: 4px; }
ul { padding-left: 20px; }
li { margin-bottom: 6px; }
a { color: var(--link); text-decoration: underline; text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 32px 0;
}
.contact {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 14px;
}
nav.crumbs {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 24px;
}
nav.crumbs a { color: var(--muted); }