:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --text: #1a1a1a;
  --link: #0b4f9e;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121212;
    --text: #ececec;
    --link: #8ab4f8;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  background: var(--bg);
  color: var(--text);
  font: 1.125rem/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
main { max-width: 36rem; width: 100%; }
h1 { margin: 0 0 1rem; font-size: 2.25rem; line-height: 1.2; }
p { margin: 0 0 1rem; overflow-wrap: break-word; }
a { color: var(--link); }
a:focus-visible { outline: 3px solid currentColor; outline-offset: 3px; }