:root {
  color-scheme: light dark;

  --ink: #241f1c;
  --ink-soft: #5c534d;
  --ink-faint: #8b8079;
  --paper: #fbf7f2;
  --paper-raised: #ffffff;
  --line: #e8ded2;
  --accent: #b4562a;
  --accent-soft: #f4e6dc;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f0e9e2;
    --ink-soft: #b8ada4;
    --ink-faint: #8b7f75;
    --paper: #16130f;
    --paper-raised: #1f1b16;
    --line: #332c25;
    --accent: #e8926a;
    --accent-soft: #2a201a;
  }
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Hiragino Sans", "Yu Gothic UI", -apple-system, BlinkMacSystemFont,
    "Segoe UI", Roboto, "Helvetica Neue", system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 44rem;
  margin: 0 auto;
  padding: 4rem 1.5rem 6rem;
}

header.brand {
  margin-bottom: 3.5rem;
}

.mark {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
}

h1 {
  font-size: clamp(1.9rem, 5vw, 2.6rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0.6rem 0 0.75rem;
  font-weight: 650;
}

.lede {
  font-size: 1.13rem;
  color: var(--ink-soft);
  margin: 0;
  max-width: 34rem;
}

h2 {
  font-size: 1.18rem;
  font-weight: 650;
  letter-spacing: -0.01em;
  margin: 3rem 0 0.6rem;
}

h3 {
  font-size: 1rem;
  font-weight: 650;
  margin: 2rem 0 0.4rem;
}

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

p {
  margin: 0 0 1rem;
}

ul {
  padding-left: 1.15rem;
  margin: 0 0 1rem;
}

li {
  margin-bottom: 0.4rem;
}

strong {
  color: var(--ink);
  font-weight: 600;
}

a {
  color: var(--accent);
  text-underline-offset: 0.18em;
}

.card {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.4rem 1.5rem;
  margin: 1.5rem 0;
}

.card p:last-child {
  margin-bottom: 0;
}

.stamp {
  font-size: 0.85rem;
  color: var(--ink-faint);
  margin-top: 0.5rem;
}

footer {
  margin-top: 4.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  font-size: 0.88rem;
  color: var(--ink-faint);
}

footer a {
  color: var(--ink-faint);
}