黄昏升腾，复古胶片产品摄影，JSON

{ "image_generation_prompt": { "subject_settings": { "placeholder": "[SUBJECT GOES HERE]", "positioning": "绝对居中构图，主体完全可见，无裁剪，无边缘截断", "presentation": "悬浮于半空中，孤立呈现，无底座，无支架，无展示盒，无人台" }, "aesthetic_style": { "visual_theme": "梦幻空灵超现实主义，复古奢华编辑风格，1990年代高级时尚胶片摄影", "texture": "厚重模拟胶片颗粒，噪点质感，轻微动态模糊，柔焦梦幻薄雾，色差", "lighting": "金属高光上的星芒镜头光晕，柔和发光光环，逆光剪影深度，无影棚灯光，无柔光箱" }, "color_palette": { "primary_gradient": {"top_color": "#1A3A5F", "middle_color": "#7B9BB9", "bottom_color": "#D4823B"}, "description": "从深午夜蓝到温暖朦胧琥珀色日落余晖的无缝昼夜过渡" }, "negative_constraints": ["文字", "水印", "影棚设备", "灯光支架", "反光板", "边框", "边缘", "主体被截断", "出框", "多个主体", "杂乱背景", "塑料质感", "超写实数字锐度", "干净4K渲染"], "technical_parameters": {"aspect_ratio": "4:5", "style_strength": "high", "diffusion_iteration": "film_emulsion_simulation"} } }