:root {
  --ink: #000000;
  --ink-soft: #55595e;
  --rule: #d9dbde;
  --paper: #ffffff;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f2f3f4;
    --ink-soft: #a0a4a9;
    --rule: #33373b;
    --paper: #17191b;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
}

main {
  max-width: 34rem;
  margin: 0 auto;
  padding: 5rem 1.5rem 6rem;
}

h1 {
  font-family: var(--serif);
  font-size: 1.75rem;
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: -0.015em;
  margin: 0 0 1.75rem;
}

h1 .sub {
  display: block;
  font-size: 1rem;
  color: var(--ink-soft);
  letter-spacing: 0;
  margin-top: 0.3rem;
}

h2 {
  font-family: var(--sans);
  font-size: 0.95rem;
  font-weight: 600;
  margin: 0 0 0.6rem;
}

.lead {
  font-size: 1.0625rem;
  margin: 0 0 3rem;
  max-width: 30rem;
}

section { margin: 0 0 2.75rem; }

p { margin: 0 0 1rem; }

.address, .meta {
  color: var(--ink-soft);
  font-size: 0.9375rem;
}

dl { margin: 0 0 1rem; }
dt {
  font-weight: 600;
  font-size: 0.875rem;
  margin-top: 1.25rem;
}
dd { margin: 0.15rem 0 0; color: var(--ink-soft); }

a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
}
a:hover { text-decoration-thickness: 2px; }
a:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
  border-radius: 1px;
}

footer {
  border-top: 1px solid var(--rule);
  padding-top: 1.25rem;
  margin-top: 4rem;
  display: flex;
  gap: 1.5rem;
  font-size: 0.9375rem;
}

.back {
  display: inline-block;
  margin-bottom: 3rem;
  font-size: 0.9375rem;
  color: var(--ink-soft);
}

@media (max-width: 480px) {
  main { padding-top: 3rem; }
}

/* Keep long addresses and legal links readable on narrow screens. */
a { overflow-wrap: anywhere; }
footer { flex-wrap: wrap; }