body {
  font-family: system-ui, sans-serif;
  line-height: 1.6;
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
  background: #fafafa;
  color: #333;
}
.container {
  background: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
input, textarea {
  width: 100%;
  padding: 0.75rem;
  margin: 0.5rem 0 1rem;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-family: monospace;
}
button {
  background: #0d6efd;
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  border-radius: 4px;
  cursor: pointer;
}
button:hover {
  background: #0b5ed7;
}
pre {
  background: #f4f4f4;
  padding: 1rem;
  border-radius: 4px;
  overflow-x: auto;
  font-size: 0.9rem;
}