body {
  font-family: sans-serif;
  margin: 0;
  padding: 0;
}
.container {
  display: flex;
  height: 100vh;
}
.sidebar {
  width: 240px;
  background: #f8f9fa;
  border-right: 1px solid #ddd;
  padding: 16px;
  overflow-y: auto;
}
.sidebar .group-name {
  font-weight: bold;
  margin-top: 16px;
}
.sidebar ul {
  list-style: none;
  padding-left: 0;
}
.sidebar ul li {
  margin: 8px 0;
}
.sidebar ul li a {
  color: #333;
  text-decoration: none;
}
.sidebar ul li a:hover {
  color: #007bff;
}
.content {
  flex: 1;
  padding: 24px;
  overflow-y: auto;
}
.usage {
  background: #fff;
  border: 1px solid #ccc;
  padding: 16px;
  white-space: pre-wrap;
  font-family: monospace;
}