:root {
  color-scheme: light dark;
  --paper: #FAF9F4;
  --ink: #1C1A15;
  --muted: #6B685E;
  --rule: #E3E1D8;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0E0C06;
    --ink: #EDEBE3;
    --muted: #9A978C;
    --rule: #2A2820;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 1.0625rem/1.55 -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}

main,
footer {
  max-width: 40rem;
  margin: 0 auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

main {
  min-height: 70vh;
  padding-top: 4rem;
  padding-bottom: 4rem;
}

h1 {
  margin: 0 0 1rem;
  font-size: 2.25rem;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

a {
  color: inherit;
  text-underline-offset: 0.15em;
}

.mark {
  display: block;
  width: 96px;
  height: 96px;
  margin-bottom: 1.5rem;
  border-radius: 22%;
}

footer {
  padding-top: 1.25rem;
  padding-bottom: 2rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.9rem;
}

footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  margin-bottom: 0.75rem;
}

footer p {
  margin: 0;
}