:root {
  color-scheme: light;
  --ink: #152322;
  --muted: #52615f;
  --brand: #0a4c52;
  --paper: #f7fbfa;
  --line: #d8e4e2;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
}

main {
  max-width: 880px;
  margin: 0 auto;
  padding: 48px 20px 72px;
}

header {
  border-bottom: 1px solid var(--line);
  margin-bottom: 32px;
  padding-bottom: 24px;
}

h1,
h2 {
  line-height: 1.2;
}

h1 {
  color: var(--brand);
  font-size: clamp(2rem, 4vw, 3rem);
  margin: 0 0 12px;
}

h2 {
  margin-top: 32px;
}

p,
li {
  font-size: 1.05rem;
}

a {
  color: var(--brand);
  font-weight: 700;
}

.lead {
  color: var(--muted);
  font-size: 1.18rem;
}

.notice {
  background: white;
  border: 1px solid var(--line);
  border-left: 6px solid var(--brand);
  padding: 18px 20px;
  margin: 24px 0;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 24px;
}

footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  margin-top: 40px;
  padding-top: 20px;
}