{ "master_prompt": { "global_settings": { "resolution": "8K 分辨率", "aspect_ratio": "3:4 画幅比", "render_style": "超写实 AI 生成美食摄影", "focus": "极致细节，纹理清晰，动态感，电影级布光", "depth_of_field": "浅景深，带有前景虚化" } } }