:root {
  color-scheme: light dark;
  font-family: system-ui, -apple-system, "Malgun Gothic", sans-serif;
  line-height: 1.7;
}

body {
  max-width: 43rem;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
  overflow-wrap: anywhere;
}

header, footer {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .5rem 1.25rem;
}

header { margin-bottom: 3rem; }
footer { margin-top: 3rem; border-top: 1px solid GrayText; padding-top: 1rem; }
nav { display: flex; flex-wrap: wrap; gap: .5rem 1rem; }
a { text-underline-offset: .2em; }
a[aria-current="page"] { font-weight: 650; }
a:focus-visible { outline: 2px solid currentColor; outline-offset: 4px; }
h1, h2 { line-height: 1.3; word-break: keep-all; }
h1 { font-size: clamp(2rem, 7vw, 2.8rem); }
h2 { font-size: 1.25rem; margin-top: 2rem; }
li { margin-block: .4rem; }