Inventory App Promo Screenshot — Clean Japanese UI Mockup

Create a stunning vertical promotional poster for an inventory app with a centered iPhone mockup, soft shadows, and rounded cards in a minimalist Japanese style. Use it as a コンセプトアート starting point for GPT Image 2: keep the visual structure and style constraints intact, then swap in your own subject, brand, or scene.

This prompt is organized as structured JSON with fields such as type, app, layout, visuals, text customization, and color customization. Keeping that hierarchy helps the model separate the subject, layout, interface elements, and detail constraints.

Start with small changes to subject, scene, camera, and color, then generate a few variations to compare composition and detail without turning the page copy into keyword stuffing.