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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
  line-height: 1.6;
  color: #333;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1rem;
}

header nav {
  display: flex;
  gap: 1.5rem;
  padding: 1rem 0;
  border-bottom: 1px solid #e0e0e0;
  margin-bottom: 2rem;
}

header nav a {
  text-decoration: none;
  color: #0366d6;
}

header nav a:first-child {
  font-weight: 700;
  color: #333;
  margin-right: auto;
}

main {
  min-height: 70vh;
  padding: 1rem 0;
}

article h1 {
  margin-bottom: 1rem;
}

footer {
  border-top: 1px solid #e0e0e0;
  padding: 1rem 0;
  margin-top: 2rem;
  color: #666;
  font-size: 0.875rem;
}

a {
  color: #0366d6;
}

code {
  background: #f5f5f5;
  padding: 0.15em 0.3em;
  border-radius: 3px;
  font-size: 0.9em;
}

pre {
  background: #272822;
  color: #f8f8f2;
  padding: 1rem;
  border-radius: 4px;
  overflow-x: auto;
  margin: 1rem 0;
}

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

ul {
  padding-left: 1.5rem;
}

li {
  margin: 0.25rem 0;
}