html body {
  color: oklch(27.1% 0.105 12.094);
  background-color: oklch(94.1% 0.03 12.58);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
}

main {
  max-width: 860px;
  margin: 0 auto;
  padding: 2rem;
  line-height: 1.7;
}
main h1,
main h2,
main h3 {
  position: relative;
  margin-top: 2.5rem;
}
main h1 {
  font-size: 2.6rem;
  letter-spacing: -0.03em;
}
main h2::after {
  content: "";
  display: block;
  height: 1px;
  margin-top: 0.5rem;
  background-color: oklch(27.1% 0.105 12.094);
  opacity: 0.1;
}
main a {
  color: oklch(64.5% 0.246 16.439);
}
main p {
  margin: 1.2rem 0;
}