偏离中心闪光街拍人像生成器

```json
{
  "type": "portrait_generation_parameters",
  "version": "1.3",
  "style_preset": "偏离中心构图 / 闪光灯街拍",
  "parameters": {
    "subject_description": {
      "base": "一位可爱时尚、镜头感十足的年轻女性。",
      "user_portrait_slot": "{用户肖像}",
      "facial_expression": "顽皮的笑容，明亮的眼睛直视镜头。",
      "head_direction": "头部微倾，并略微转向右侧。"
    },
    "apparel_and_outfit": {
      "base": "高级时装街头风格。",
      "outfit_slot": "{服装/穿搭}",
      "styling_notes": "服装应具有动感和质感，适合充满活力的街拍。"
    },
    "pose_and_action": {
      "leg_position": "双腿紧并，膝盖略微内扣，一只脚略微向前。",
      "body_orientation": "身体前倾，并向画面右侧倾斜。",
      "hands": "双手置于大腿上，以支撑前倾的姿势。",
      "overall_dynamic": "一个可爱、年轻的站立姿势，看起来自然而充满活力。"
    },
    "composition": {
      "framing": "中景全身照。",
      "visual_balance": "偏离中心构图。主体位于画面 **左侧三分之一处**（三分法）。",
      "directional_flow": "主体的身体和目光从左侧指向右侧（进入负空间）。",
      "camera_angle": "与视线齐平或略低角度，以突出腿部。"
    },
    "lighting": {
      "type": "直射机顶闪光灯（夜晚）。",
      "characteristics": "硬朗、直射的闪光灯照亮主体，与较暗的街景背景形成鲜明对比。",
      "shadows": "主体身后有硬朗的落影。"
    },
    "environment": {
      "setting": "城市夜景街头。右侧的空白区域展现出模糊的城市灯光和街道细节。",
      "atmosphere": "随意、自发、粗犷而时尚。"
    },
    "color_palette": {
      "style": "富士经典负片（NC）。",
      "tones": "背景为忧郁冷色调，皮肤为温暖闪光灯色调。高对比度。"
    },
    "negative_prompt": [
      "画面中心",
      "主体居中",
      "双腿分开",
      "站姿过宽",
      "双腿笔直",
      "看向左侧",
      "身体朝左",
      "解剖结构错误",
      "手部扭曲",
      "手指缺失",
      "面部模糊",
      "光线平坦"
    ]
  }
}
```