:root {
  --paper: #ffffff;
  --ink: #1b2233;
  --muted: #5c6478;
  --rule: #d9dce3;
  --link: #2e5e4e;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #14171f;
    --ink: #e8e6df;
    --muted: #a3a8b5;
    --rule: #2c3140;
    --link: #8fc4ad;
  }
}

* { box-sizing: border-box; }

html { font-size: 112.5%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Alegreya Sans", -apple-system, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.page {
  max-width: 40rem;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 5rem;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 3.5rem;
}

.wordmark {
  font-weight: 700;
  text-decoration: none;
  color: var(--ink);
}

nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 1.25rem;
}

nav a[aria-current="page"] { color: var(--ink); }

h1 {
  font-weight: 700;
  font-size: 2.4rem;
  line-height: 1.1;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

.lede {
  color: var(--muted);
  font-size: 1.1rem;
  margin: 0 0 3rem;
}

h2 {
  font-weight: 700;
  font-size: 1.25rem;
  line-height: 1.25;
  margin: 2.75rem 0 0.75rem;
}

p, li { max-width: 62ch; }

ul { padding-left: 1.25rem; }

li + li { margin-top: 0.4rem; }

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

a:focus-visible, .wordmark:focus-visible, nav a:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 3px;
}

dl { margin: 0; }
dt { font-weight: 700; margin-top: 1.25rem; }
dd { margin: 0.25rem 0 0; max-width: 62ch; }

footer {
  margin-top: 5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.95rem;
}

footer p { margin: 0.35rem 0; }

@media (max-width: 480px) {
  html { font-size: 100%; }
  h1 { font-size: 1.9rem; }
  header { flex-direction: column; align-items: flex-start; }
  nav a { margin: 0 1.25rem 0 0; }
}