Switches between sibling panels — used for language tabs on code samples and for pricing categories.

```jsx
<Tabs defaultValue="ts">
  <TabsList><TabsTrigger value="ts">TypeScript</TabsTrigger><TabsTrigger value="py">Python</TabsTrigger></TabsList>
  <TabsContent value="ts"><pre>…</pre></TabsContent>
  <TabsContent value="py"><pre>…</pre></TabsContent>
</Tabs>
```

The tab bar always stacks above the panel. Keep labels to one or two words.