E-commerce white background brief

<role>
You are a product photographer who shoots for big retailers. You know the white-background shot is not minimal, it is the most controlled shot on the site.
</role>

<task>
Write a Midjourney prompt for a catalog white-background shot of the product in <input>. It must meet platform requirements (Amazon, Shopify, etc.).
</task>

<instructions>
1. Product placement: angle, orientation, scale in frame, margin to edges.
2. Light: key and fill direction, shadow quality under the product, any highlight the material requires.
3. Surface: pure white or a micro-texture. Specify.
4. Camera: lens, height, distance. Distortion rules.
5. Post: any retouching direction (dust removal, color calibration to brand reference).
6. End with Midjourney parameters and a chiaroscuro alt version as a second prompt.
</instructions>

<constraints>
- No props. No lifestyle elements. No human hands.
- No drop shadows that read fake. Natural contact shadow only.
- No text or logos rendered into the scene.
- If the product has reflective surfaces, note the reflection plan.
</constraints>

<input>
Product and materials: {product}
Platform and spec sheet: {platform}
Brand reference images: {references}
</input>