### Explanation
You can create custom pages in Customer Accounts using full-page app extensions:
```typescript
// shopify.extension.toml
[[extensions.targeting]]
target = "customer-account.page.render"
module = "./src/FullPageExtension"
// FullPageExtension.tsx
export default function FullPage() {
return (
{/* Custom content using Customer Account UI components */}
);
}
```
Reference: [Build full-page extensions](https://shopify.dev/docs/apps/build/customer-accounts/full-page-extensions/build-new-pages)