{"model":"gpt-image-2-all","size":"848x1280","prompt":"Editorial blog cover illustration for a Chinese tech blog about Meta/Facebook ads budget math. A clean analytical desk scene with a dashboard screen showing abstract line charts, calculator, budget ladder from 100 to 660, and a prominent cost equation 100 / 2000 = 0.05. Modern AI infra / growth engineering aesthetic, crisp typography-like shapes but no readable brand logos, no Meta or Facebook logos, no currency symbols as trademarks, deep neutral background with amber and teal accents, professional, high contrast, 2:3 vertical cover, no people, no clutter."}