Generate a high-end commercial visual poster, vertical 3:4 aspect ratio, featuring [subj…

Generate a high-end commercial visual poster, vertical 3:4 aspect ratio, featuring [subject] as the main focus, centered and prominent, occupying 45%–60% of the frame. Avoid ink-wash styles, ink splashes, calligraphy, and the "foreground subject with a giant grayscale portrait in the background" template. Automatically select the most appropriate modern visual style based on the subject, such as fashion magazine cover, minimalist advertisement, movie poster, product launch key visual, futuristic tech poster, retro collage, art book cover, streetwear brand KV, or luxury advertisement. Background, color palette, lighting, texture, and typography must align with the subject's aesthetic. Incorporate appropriate geometric shapes, fine lines, grids, light and shadow effects, texture close-ups, layout segmentation, small text labels, and negative space. The overall result should be sophisticated, modern, commercial, refined, and impactful, with a clear subject, rich but organized layers, and legible text. Avoid garbled characters, watermarks, cheap template aesthetics, and subject distortion.