:root {
  color-scheme: light;
  --ink: #1f2933;
  --muted: #52606d;
  --paper: #fbfaf7;
  --surface: #ffffff;
  --line: #d9e2ec;
  --accent: #245c75;
  --accent-soft: #e7f1f5;
  --max-width: 72rem;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.6;
}

body {
  margin: 0;
}

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

a:focus-visible {
  outline: 3px solid #d59b2c;
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 1;
  padding: 0.6rem 0.8rem;
  background: var(--ink);
  color: #fff;
}

.skip-link:focus {
  top: 1rem;
}

.site-header,
.site-footer,
main {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.site-header {
  padding: 1.5rem 0 1rem;
  border-bottom: 1px solid var(--line);
}

.brand {
  color: var(--ink);
  font-size: 1.2rem;
  font-weight: 750;
  letter-spacing: -0.02em;
  text-decoration: none;
}

nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.2rem;
  margin: 0.75rem 0 0;
  padding: 0;
  list-style: none;
}

nav a {
  font-size: 0.95rem;
  font-weight: 650;
}

main {
  padding: 3.5rem 0 4rem;
}

.intro {
  max-width: 52rem;
  margin-bottom: 2.5rem;
}

.eyebrow {
  margin: 0 0 0.6rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h1,
h2 {
  line-height: 1.15;
  letter-spacing: -0.03em;
}

h1 {
  max-width: 18ch;
  margin: 0 0 1rem;
  font-size: clamp(2.25rem, 7vw, 4.75rem);
}

h2 {
  margin: 2.5rem 0 0.75rem;
  font-size: clamp(1.45rem, 3vw, 2rem);
}

p,
li {
  max-width: 70ch;
}

.lead {
  color: var(--muted);
  font-size: clamp(1.08rem, 2vw, 1.35rem);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.card,
.note {
  padding: 1.25rem;
  border: 1px solid var(--line);
  background: var(--surface);
}

.card h2 {
  margin-top: 0;
  font-size: 1.2rem;
}

.note {
  border-left: 0.35rem solid var(--accent);
  background: var(--accent-soft);
}

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

article {
  max-width: 48rem;
}

article h1 {
  max-width: none;
  font-size: clamp(2rem, 5vw, 3.5rem);
}

dt {
  margin-top: 1rem;
  font-weight: 750;
}

dd {
  margin: 0.2rem 0 0;
  color: var(--muted);
}

.site-footer {
  padding: 1.25rem 0 2rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer p {
  margin: 0.35rem 0;
}

@media (max-width: 42rem) {
  .site-header,
  .site-footer,
  main {
    width: min(100% - 1.25rem, var(--max-width));
  }

  main {
    padding-top: 2.5rem;
  }

  .grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}