:root {
  color-scheme: light;
  font: 100%/1.6 system-ui, sans-serif;
  color: #172730;
  background: #f6f9fa;
}
body {
  max-width: 48rem;
  margin: 0 auto;
  padding: 2rem clamp(1rem, 4vw, 2rem);
}
header {
  padding-bottom: 1rem;
  border-bottom: 1px solid #bdcbd1;
}
nav {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.25rem;
  margin-top: .5rem;
}
.brand {
  font-weight: 750;
}
a {
  color: #005b69;
  text-underline-offset: .2em;
}
a:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 3px;
}
h1 {
  font-size: clamp(1.7rem, 6vw, 2.5rem);
  line-height: 1.15;
}
h2 {
  font-size: 1.15rem;
}