:root {
  color-scheme: light;
  --ink: #142226;
  --muted: #3d4f53;
  --link: #0c5c66;
  --line: #d5e0e2;
  --paper: #ffffff;
  --page: #f3f6f7;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.55;
}

main {
  max-width: 40rem;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
  background: var(--paper);
  min-height: 100vh;
}

h1 {
  font-size: 1.75rem;
  line-height: 1.25;
  margin: 0 0 0.5rem;
}

h2 {
  font-size: 1.15rem;
  margin: 1.75rem 0 0.5rem;
}

p,
li {
  color: var(--ink);
}

.muted {
  color: var(--muted);
}

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

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  margin: 1.25rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

nav a {
  font-weight: 600;
}