Smart Speaker Product Photography Prompt

Generate a high-end unbranded product photography image: a cylindrical smart speaker with matte ceramic texture and a small walnut charging base, placed on a warm gray concrete countertop. The background is a soft linen backdrop, using north-facing window light, restrained shadows, slight polished concrete reflections, and keeping clean e-commerce negative space in the upper right. Color palette: warm gray, porcelain white, walnut, desaturated olive green, graphite. No readable text, logos, watermarks, hands, people, or brand identifiers. Realistic e-commerce hero image, 4:3 horizontal composition.