:root {
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #17202a;
  background: #f4f7f9;
}

body {
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
}

main {
  width: min(32rem, calc(100% - 3rem));
  padding: 2.5rem;
  border: 1px solid #d9e2e8;
  border-radius: 1rem;
  background: #fff;
  box-shadow: 0 1rem 3rem rgba(22, 34, 45, .08);
}

h1 {
  margin: 1rem 0 .5rem;
  font-size: 1.6rem;
}

p {
  margin: 0;
  color: #52606d;
}

.status {
  display: block;
  width: .75rem;
  height: .75rem;
  border-radius: 50%;
  background: #18a558;
  box-shadow: 0 0 0 .3rem rgba(24, 165, 88, .14);
}

@media (prefers-color-scheme: dark) {
  :root { color: #ecf2f7; background: #111820; }
  main { background: #18222d; border-color: #2b3a48; }
  p { color: #aab7c4; }
}