Flat UI/Startup Style Illustration Prompt

A simple, reusable prompt for Nano Banana Pro to generate flat, startup-style vector illustrations of a specified subject, emphasizing bright colors, simple shapes, clean design, and a white background, with an explicit

Flat illustration of {argument name="subject" default="[subject]"}, startup-style vector art, bright colors, simple shapes, clean and professional design, white background, no text.