.demo-nav {
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding: 16px 24px; background: var(--surface); border-bottom: 1px solid var(--border);
}
.demo-nav nav { display: flex; gap: 18px; }
.demo-nav a { color: var(--text-2); text-decoration: none; }
.demo-main { max-width: 960px; margin: 0 auto; padding: 40px 16px 120px; }
.demo-hero { max-width: 640px; margin-bottom: 40px; }
.demo-hero h1 { font-size: 26px; margin: 12px 0; }
.demo-hero p { margin: 0 0 20px; }
.demo-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; margin-bottom: 40px; }
.demo-card { padding: 14px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.demo-card h3 { font-size: 15px; margin: 12px 0 4px; }
.demo-card p { margin: 0; }
.demo-img { aspect-ratio: 4 / 3; border-radius: var(--radius-sm); background: linear-gradient(135deg, var(--surface-3), var(--brand-soft)); }
.demo-code h2 { font-size: 18px; margin-bottom: 6px; }
.demo-code pre {
  padding: 14px; border-radius: var(--radius-sm); overflow-x: auto;
  background: var(--surface-3); border: 1px solid var(--border); font-size: 13px;
}