* { box-sizing: border-box; }
body {
  margin: 0;
  background: #fff;
  color: #303030;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.8;
}
main { max-width: 720px; margin: 90px auto; padding: 0 30px; }
h1 { margin: 0 0 12px; font-size: 30px; line-height: 1.3; font-weight: 600; }
header p { margin: 0; color: #666; }
section { margin-top: 40px; }
h2 { margin: 0 0 12px; font-size: 18px; font-weight: 600; }
p { margin: 0; }
a { color: #245b83; text-underline-offset: 4px; }
a:hover { color: #153c59; }
a:focus-visible { outline: 2px solid #245b83; outline-offset: 5px; }
.links { margin-top: 28px; }
@media (max-width: 600px) {
  main { margin: 48px auto; padding: 0 24px; }
  h1 { font-size: 28px; }
}