body {
  font-family: var(--font-sans);
  line-height: 1.6;
  margin: 0;
  padding: 0;
  background: #f9f9f9;
  color: #333;
}

header {
  background: #2d2d2d;
  color: #fff;
  padding: 1rem 2rem;
  text-align: center;
}

h1 {
  font-size: 2rem;
  margin: 0;
}

main {
  max-width: 900px;
  margin: 2rem auto;
  padding: 0 1rem;
}

footer {
  text-align: center;
  padding: 1rem;
  font-size: 0.9rem;
  color: #777;
}

/* Code block styling */
pre {
  background: #272822;
  color: #f8f8f2;
  padding: 1rem;
  overflow: auto;
  border-radius: 4px;
}

code {
  background: #f0f0f0;
  padding: 0 0.3rem;
  border-radius: 3px;
  font-family: monospace;
}

/* Responsive */
@media (max-width: 600px) {
  header, main, footer {
    padding: 0.5rem;
  }
}