:root {
  --bg: hsl(16, 31%, 97%);
  --surface: hsl(16, 24%, 92%);
  --text: hsl(16, 26%, 11%);
  --muted: hsl(16, 18%, 41%);
  --accent: hsl(226, 59%, 42%);
  --line: hsl(16, 17%, 85%);
  --measure: 63ch;
  --radius: 0px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Lucida Bright", Georgia, "Times New Roman", serif;
  font-size: 17px;
  line-height: 1.48;
}

.wrap {
  max-width: 920px;
  margin: 0 auto;
  padding: 0 20px;
}

header.site {
  border-bottom: 1px solid var(--line);
  padding: 21px 0;
}

header.site .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: baseline;
  justify-content: space-between;
}

.brand {
  font-size: 23px;
  font-weight: 600;
  letter-spacing: 0.004em;
  text-transform: uppercase;
  color: var(--text);
  text-decoration: none;
}

nav.site ul {
  list-style: none;
  display: flex;
  gap: 17px;
  margin: 0;
  padding: 0;
}

nav.site a {
  color: var(--muted);
  text-decoration: none;
  font-size: 15px;
}

nav.site a:hover { color: var(--accent); }

main { padding: 47px 0; }

h1 {
  font-size: 30px;
  line-height: 1.12;
  margin: 0 0 19px;
  font-weight: 600;
  letter-spacing: -0.01em;
  max-width: var(--measure);
}

h2 {
  font-size: 26px;
  margin: 34px 0 12px;
  font-weight: 600;
}

h3 { font-size: 18px; margin: 0 0 8px; font-weight: 600; }

p { max-width: var(--measure); margin: 0 0 17px; }

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

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

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 21px;
  margin: 34px 0;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
}

.card p { margin: 0; color: var(--muted); font-size: 16px; }

dl.facts { margin: 34px 0; }

dl.facts div {
  display: flex;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

dl.facts dt {
  min-width: 148px;
  color: var(--muted);
  font-family: "IBM Plex Mono", "Courier New", monospace;
  font-size: 15px;
}

dl.facts dd { margin: 0; }

blockquote {
  margin: 34px 0;
  padding-left: 21px;
  border-left: 2px solid var(--accent);
  font-size: 19px;
  color: var(--muted);
}

footer.site {
  border-top: 1px solid var(--line);
  padding: 21px 0;
  color: var(--muted);
  font-size: 15px;
}

footer.site p { max-width: none; }

.notfound { padding: 79px 0; }

@media (max-width: 640px) {
  h1 { font-size: 30px; }
  .wrap { padding: 0 18px; }
  header.site .wrap { flex-direction: column; align-items: flex-start; gap: 10px; }
  nav.site ul { flex-wrap: wrap; gap: 14px; }
}