:root {
  --ink: #17202a;
  --muted: #5b6b7c;
  --bg: #fbfcfd;
  --rule: #dfe5ea;
  --accent: #1f5f8b;
  --measure: 34rem;
}
@media (prefers-color-scheme: dark) {
  :root { --ink:#e8edf2; --muted:#9fb0c0; --bg:#12171c; --rule:#28323b; --accent:#7fb3d5; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--accent); }
.site-head, main, .site-foot { max-width: var(--measure); margin: 0 auto; padding: 0 1.25rem; }
.site-head {
  display: flex; flex-wrap: wrap; gap: 1rem; align-items: baseline;
  justify-content: space-between; padding-top: 2.5rem; padding-bottom: 1.5rem;
}
.brand { font-weight: 650; font-size: 1.15rem; text-decoration: none; color: var(--ink); letter-spacing: -0.01em; }
.site-head nav a { margin-left: 1rem; font-size: 0.95rem; }
.hero { padding: 1.5rem 0 0.5rem; }
.hero h1 { font-size: clamp(1.9rem, 5vw, 2.6rem); line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 0.4rem; }
.lede { color: var(--muted); font-size: 1.1rem; margin: 0 0 1.5rem; }
.prose h1 { font-size: 1.8rem; line-height: 1.2; letter-spacing: -0.02em; }
.prose h2 { font-size: 1.15rem; margin-top: 2.2rem; }
.prose p, .prose li { color: var(--ink); }
.prose ul { padding-left: 1.1rem; }
.prose li { margin: 0.3rem 0; }
.site-foot {
  margin-top: 4rem; padding-top: 1.25rem; padding-bottom: 3rem;
  border-top: 1px solid var(--rule); color: var(--muted); font-size: 0.9rem;
}
.site-foot p { margin: 0; }