body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  margin: 20px;
  padding: 0;
  background: #333;
  color: #f9f9f9;
}
header, section {
  margin-bottom: 2rem;
}
h1, h2, h3 {
  color: #f9f9f9;
}
pre {
  background: #333;
  padding: 1rem;
  overflow-x: auto;
}
code {
  font-family: Consolas, monospace;
  white-space: pre-wrap;
}
.container {
  max-width: 960px;
  margin: 0 auto;
  background: #222;
  padding: 2rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
table {
  border-collapse: collapse;
  width: 100%;
  margin-top: 1rem;
}
table, th, td {
  border: 1px solid #ddd;
}
th, td {
  padding: 0.5rem;
  text-align: left;
}
th {
  background: #f0f0f0;
}