body {
  font-family: system-ui, sans-serif;
  margin: 2em auto;
  max-width: 700px;
  line-height: 1.7;
  color: #222;
  background: #fafbfc;
}

h1,
h2,
h3 {
  color: #2b6cb0;
}

code,
pre {
  background: #f4f4f4;
  border-radius: 4px;
}

code {
  padding: 2px 6px;
  font-size: 1em;
}

pre {
  padding: 1em;
  overflow-x: auto;
  font-size: 0.97em;
}

ul {
  margin-bottom: 1.2em;
}

table {
  border-collapse: collapse;
}

th,
td {
  border: 1px solid #ddd;
}

.demo-link {
  margin-right: 1em;
  margin-bottom: 0.5em;
}

footer {
  margin-top: 2em;
  text-align: center;
  color: #888;
  font-size: 0.95em;
}

.hidden {
  display: none;
}