Replace a product photo background with a branded scene

I have a clean product photo and I want the background swapped to a specific branded scene without affecting the product.

In Nano Banana, upload the source product photo.

The product: {{product}}
The current background: {{current_bg}}
The new background to swap in: {{new_bg}}
Lighting direction in the new scene (so it matches the product): {{light_direction}}
Surface or plinth the product sits on (so it looks placed, not pasted): {{surface}}
Anything in the new scene to AVOID (props that distract): {{avoid_props}}
Aspect ratio: {{aspect}}

Tell Nano Banana:

Keep the {{product}} exactly as it appears. Replace {{current_bg}} with {{new_bg}}.

- Match the lighting on the product to {{light_direction}} so it looks naturally lit by the new scene.
- Place the product on {{surface}} with a contact shadow that matches the scene's light direction.
- Do not change the product's colour, shape, or label.
- Avoid {{avoid_props}}.
- Keep the depth of field shallow so the new background sits behind the product, not competing.

Output at {{aspect}}. Then give me 2 alternative crops (centred, off-centre) so I can pick the right one for a layout.