:root {
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    sans-serif;
  color: #1e293b;
  background: #f8fafc;
  color-scheme: light;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  line-height: 1.8;
}
header,
main,
footer {
  max-width: 960px;
  margin: auto;
  padding: 24px;
}
header {
  border-bottom: 1px solid #e2e8f0;
}
.brand {
  font-size: 22px;
  font-weight: 750;
  color: #4338ca;
  text-decoration: none;
}
nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin-top: 16px;
}
a {
  color: #4338ca;
  text-underline-offset: 3px;
}
h1 {
  font-size: clamp(28px, 5vw, 38px);
  line-height: 1.35;
}
h2 {
  font-size: 22px;
  margin-top: 28px;
  line-height: 1.5;
}
.lead {
  color: #475569;
}
section {
  padding: 8px 0;
  border-bottom: 1px solid #e2e8f0;
}
p {
  overflow-wrap: anywhere;
}
footer {
  font-size: 14px;
  color: #64748b;
}