body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 0;
  background: #f9f9f9;
  color: #333;
}
.site-header {
  background: #333;
  padding: 1rem;
}
.site-header nav a {
  color: #fff;
  margin-right: 1rem;
  text-decoration: none;
}
.page {
  background: #fff;
  padding: 2rem;
  border-radius: 4px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.site-footer {
  text-align: center;
  padding: 1rem;
  background: #eee;
  margin-top: 2rem;
}




.layout {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 2rem;
  align-items: start;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}
.sidebar {
  position: sticky;
  top: 1rem;
  align-self: start;
}
.site-tree ul,
.page-toc ul {
  margin: 0;
  padding-left: 1rem;
}
.site-tree a.active-section,
.site-tree a.active-page {
  font-weight: bold;
}
.page-toc h2 {
  margin-top: 0;
  font-size: 0.9rem;
  text-transform: uppercase;
}





.page-toc a.active {
  font-weight: bold;
  color: #000;
}