:root {
  color-scheme: light;
  --background: #f4f6f8;
  --surface: #ffffff;
  --text: #17202a;
  --muted: #52616f;
  --border: #cbd3da;
  --accent: #164e75;
  --focus: #b45309;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.65;
}

header, main, footer {
  width: min(100% - 2rem, 48rem);
  margin-inline: auto;
}

header { padding-block: 1.5rem 1rem; }

nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

main {
  min-height: 60vh;
  padding: clamp(1.5rem, 4vw, 3rem);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: var(--surface);
}

h1, h2 { line-height: 1.25; }
h1 { margin-top: 0; }
h2 { margin-top: 2rem; }
p, li { max-width: 70ch; }

a { color: var(--accent); text-underline-offset: 0.18em; }
a:hover { text-decoration-thickness: 0.14em; }
a:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
  border-radius: 0.1rem;
}

.effective-date, .lede { color: var(--muted); }
footer { padding-block: 1.5rem 3rem; color: var(--muted); }

@media (max-width: 36rem) {
  main { padding: 1.25rem; }
  nav ul { flex-direction: column; }
}