:root {
  --ink: #1b2330;
  --paper: #ffffff;
  --accent: #1f5fd1;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  font-family: system-ui, sans-serif;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
}
main {
  max-width: 68ch;
  margin: 0 auto;
  padding: 24px 16px;
}
a {
  color: var(--accent);
}