:root {
  --bg: #ffffff;
  --fg: #12294f;
  --muted: #5a6b8c;
  --accent: #12294f;
  --card: #f3f6fb;
  --border: #dde4f0;
}

* { box-sizing: border-box; }

html {
  background: #ffffff;
}

body {
  margin: 0;
  padding: 0 1.25rem 4rem;
  background: var(--bg) !important;
  color: var(--fg) !important;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

h1, h2, p, li, a, .updated { color: inherit; }

main {
  max-width: 720px;
  margin: 0 auto;
}

header {
  padding: 2.5rem 0 1rem;
}

h1 {
  font-size: 1.75rem;
  margin: 0 0 0.25rem;
}

.updated {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 2rem;
}

h2 {
  font-size: 1.15rem;
  margin-top: 2.25rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.4rem;
}

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

.nav {
  display: flex;
  gap: 1rem;
  font-size: 0.9rem;
}

ul { padding-left: 1.25rem; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}