:root {
  --bg: #ffffff;
  --text: #1a1a1a;
  --text-muted: #666666;
  --link: #0066cc;
  --border: #e0e0e0;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1a1a;
    --text: #e0e0e0;
    --text-muted: #999999;
    --link: #6cb6ff;
    --border: #333333;
  }
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  max-width: 650px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

section {
  margin-bottom: 3rem;
}

h1 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

p + p {
  margin-top: 1rem;
}

ul {
  list-style: none;
}

ul li {
  margin-bottom: 1.5rem;
}

ul li p {
  color: var(--text-muted);
  margin-top: 0.25rem;
}