:root {
  --bg: #f6f4ef;
  --surface: #fffdf8;
  --ink: #1c1b19;
  --muted: #615d55;
  --line: #ddd8cc;
  --accent: #1f5f4a;
  --accent-soft: #e3ede8;
  --serif: 'Iowan Old Style', 'Charter', 'Palatino Linotype', Palatino, Georgia, serif;
  --sans:
    -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --mono: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141513;
    --surface: #1b1c1a;
    --ink: #ecebe6;
    --muted: #a19e95;
    --line: #2f302c;
    --accent: #7cc4a6;
    --accent-soft: #1f2d27;
  }
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.65 var(--sans);
}

a {
  color: var(--accent);
  text-underline-offset: 0.2em;
  text-decoration-thickness: 1px;
}

a:hover {
  text-decoration-thickness: 2px;
}

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

.wrap {
  max-width: 44rem;
  margin: 0 auto;
  padding: 0 1rem;
}

header.top {
  border-bottom: 1px solid var(--line);
}

header.top .wrap {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1.1rem;
  padding-bottom: 1.1rem;
}

.mark {
  font: 600 1rem/1 var(--serif);
  letter-spacing: 0.01em;
  color: var(--ink);
  text-decoration: none;
}

.mark span {
  color: var(--accent);
}

nav {
  display: flex;
  gap: 1.25rem;
  font-size: 0.92rem;
}

nav a {
  color: var(--muted);
  text-decoration: none;
}

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

main.wrap {
  padding-top: 4rem;
  padding-bottom: 4.5rem;
}

.eyebrow {
  margin: 0 0 1rem;
  font: 500 0.78rem/1 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

h1 {
  margin: 0 0 1.25rem;
  font: 500 clamp(2.1rem, 6vw, 3.1rem) / 1.1 var(--serif);
  letter-spacing: -0.015em;
  text-wrap: balance;
}

h2 {
  margin: 3rem 0 0.75rem;
  font: 600 1.3rem/1.3 var(--serif);
}

h3 {
  margin: 1.75rem 0 0.4rem;
  font-size: 1rem;
}

.tagline {
  margin: -0.5rem 0 1.5rem;
  font: 400 clamp(1.25rem, 3.2vw, 1.6rem) / 1.3 var(--serif);
  color: var(--accent);
}

.lede {
  margin: 0 0 2rem;
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 36rem;
}

p,
ul {
  margin: 0 0 1rem;
}

ul {
  padding-left: 1.2rem;
}

li {
  margin-bottom: 0.4rem;
}

code {
  font: 0.88em var(--mono);
  background: var(--accent-soft);
  padding: 0.1em 0.35em;
  border-radius: 4px;
  overflow-wrap: anywhere;
}

.facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: 0;
  margin: 2.5rem 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.facts li {
  margin: 0;
  padding: 1.1rem 1rem 1.1rem 0;
  border-bottom: 1px solid var(--line);
}

.facts strong {
  display: block;
  font: 600 1rem/1.3 var(--serif);
  margin-bottom: 0.2rem;
}

.facts span {
  display: block;
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.5;
}

.note {
  margin: 2rem 0;
  padding: 1rem 1.2rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: 0 6px 6px 0;
}

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

.updated {
  color: var(--muted);
  font-size: 0.92rem;
}

footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.88rem;
}

footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  padding-top: 1.5rem;
  padding-bottom: 2rem;
}

footer a {
  color: var(--muted);
}