:root {
  --bg: #0e141b;
  --surface: #161e27;
  --hairline: #263241;
  --text: #e9edf0;
  --muted: #8c9aa6;
  --accent: #4fc1d6;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "Inter", "Segoe UI", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.mono {
  font-family: "SFMono-Regular", "IBM Plex Mono", "Menlo", monospace;
}

header.site {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 720px;
  margin: 0 auto;
  padding: 28px 24px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.brand svg { display: block; }

.brand span { font-size: 1rem; }

nav.site-links {
  display: flex;
  gap: 20px;
}

nav.site-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
}

nav.site-links a:hover,
nav.site-links a:focus-visible {
  color: var(--accent);
}

main {
  max-width: 680px;
  margin: 0 auto;
  padding: 64px 24px 96px;
}

.eyebrow {
  color: var(--accent);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  margin: 0 0 10px;
}

h1 {
  font-size: 2rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}

.updated {
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0 0 48px;
}

section.block {
  border-top: 1px solid var(--hairline);
  padding-top: 28px;
  margin-top: 28px;
}

section.block h2 {
  font-size: 1.05rem;
  margin: 0 0 12px;
  display: flex;
  align-items: baseline;
  gap: 10px;
}

section.block h2 .bearing {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

section.block p, section.block li {
  color: var(--text);
}

section.block.callout {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-top: 1px solid var(--hairline);
  border-radius: 10px;
  padding: 20px 24px;
}

section.block.callout h2 { color: var(--text); }

ul { padding-left: 1.1em; margin: 0.4em 0; }
li { margin: 0.3em 0; }

a.inline { color: var(--accent); }

.support-cta {
  display: inline-block;
  margin-top: 6px;
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.hero {
  padding-top: 40px;
}

.hero h1 { font-size: 2.4rem; }

.hero p.lede {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 46ch;
}

.card-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 40px;
}

.card {
  border: 1px solid var(--hairline);
  border-radius: 10px;
  padding: 20px;
  text-decoration: none;
  color: var(--text);
  background: var(--surface);
  transition: border-color 0.15s ease;
}

.card:hover, .card:focus-visible {
  border-color: var(--accent);
}

.card .bearing {
  color: var(--accent);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}

.card h3 {
  margin: 8px 0 4px;
  font-size: 1.05rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 520px) {
  .card-row { grid-template-columns: 1fr; }
  h1 { font-size: 1.6rem; }
  .hero h1 { font-size: 1.9rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}