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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
  color: #333;
}

nav {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid #ddd;
}

nav a {
  color: #0066cc;
  text-decoration: none;
}

nav a:hover {
  text-decoration: underline;
}

h1 {
  margin-bottom: 1rem;
  color: #1a1a1a;
}

h2 {
  margin-top: 2rem;
  margin-bottom: 0.5rem;
  color: #2a2a2a;
}

h3 {
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  color: #3a3a3a;
}

p {
  margin-bottom: 1rem;
}

ul, ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.25rem;
}

code {
  background: #f4f4f4;
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  font-size: 0.9em;
}

pre {
  background: #f4f4f4;
  padding: 1rem;
  border-radius: 5px;
  overflow-x: auto;
  margin-bottom: 1rem;
}

pre code {
  background: none;
  padding: 0;
}

blockquote {
  border-left: 3px solid #0066cc;
  padding-left: 1rem;
  margin: 1rem 0;
  color: #555;
  font-style: italic;
}