:root {
  color-scheme: light dark;
  font-family: system-ui, -apple-system, sans-serif;
}

body {
  margin: 0;
  background: #eef3f9;
  color: #152235;
  line-height: 1.55;
}

main {
  box-sizing: border-box;
  max-width: 880px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

article {
  padding: 24px;
  background: #fff;
  border: 1px solid #dbe3ed;
  border-radius: 20px;
}

h1 {
  margin-top: 0;
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  line-height: 1.12;
}

h2 {
  margin-top: 2rem;
  font-size: 1.25rem;
}

p,
li {
  max-width: 76ch;
}

a {
  color: #1769d2;
}

dt {
  margin-top: 0.65rem;
  font-weight: 700;
}

dd {
  margin-left: 0;
}

.meta {
  color: #53677f;
}

.notice {
  padding: 14px 16px;
  background: #edf5ff;
  border-left: 4px solid #1769d2;
}

@media (prefers-color-scheme: dark) {
  body {
    color: #edf4fc;
    background: #0f1a27;
  }

  article {
    background: #162432;
    border-color: #344659;
  }

  a {
    color: #74b4ff;
  }

  .meta {
    color: #a8bad0;
  }

  .notice {
    background: #1b334e;
    border-color: #74b4ff;
  }
}