:root {
  color-scheme: light;
  --ink: #202124;
  --muted: #5f6368;
  --line: #dadce0;
  --surface: #ffffff;
  --soft: #f8fafd;
  --accent: #1a73e8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

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

.nav {
  align-items: center;
  display: flex;
  gap: 24px;
  justify-content: space-between;
  margin: 0 auto;
  max-width: 1040px;
  padding: 18px 24px;
}

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

.nav-links {
  display: flex;
  gap: 18px;
}

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

.hero,
.content {
  margin: 0 auto;
  max-width: 1040px;
  padding: 56px 24px;
}

.hero {
  display: grid;
  gap: 32px;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
}

h1,
h2,
h3 {
  line-height: 1.18;
  margin: 0 0 16px;
}

h1 {
  font-size: 44px;
  letter-spacing: 0;
}

h2 {
  border-top: 1px solid var(--line);
  font-size: 26px;
  margin-top: 36px;
  padding-top: 28px;
}

h3 {
  font-size: 19px;
  margin-top: 26px;
}

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

.lede {
  color: var(--muted);
  font-size: 19px;
  margin: 0;
  max-width: 720px;
}

.panel {
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
}

.panel h2 {
  border: 0;
  font-size: 20px;
  margin-top: 0;
  padding-top: 0;
}

.facts {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
}

.fact {
  border-left: 3px solid var(--accent);
  padding-left: 14px;
}

.fact strong {
  display: block;
}

.muted,
.updated {
  color: var(--muted);
}

.callout {
  background: #fef7e0;
  border: 1px solid #fdd663;
  border-radius: 8px;
  margin: 28px 0;
  padding: 18px;
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  margin-top: 40px;
  padding: 24px;
  text-align: center;
}

code {
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 5px;
}

@media (max-width: 760px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 36px;
  }

  h1 {
    font-size: 34px;
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }
}