健身房运动镜自拍生成提示

```json
{
  "visual_details": {
    "subject": {
      "gender": "女性",
      "age_demographic": "青年",
      "body_type": "健美，腰部纤细，腹肌分明",
      "pose": "镜面自拍，一只手拿着智能手机遮住脸部，姿态放松自信",
      "expression": "脸部被手机部分遮挡，表情自然中性",
      "hair": {
        "color": "深棕色",
        "style": "长发，波浪卷发",
        "details": "自然飘逸，略带光泽"
      },
      "outfit": {
        "top": "深海军蓝或黑色运动文胸",
        "bottom": "宽松深色运动裤",
        "accessories": [
          "头戴式耳机",
          "棒球帽或毛线帽"
        ]
      }
    },
    "environment": {
      "location": "现代室内健身房",
      "background_elements": [
        "健身器械",
        "自由重量器械",
        "镜子",
        "大窗户"
      ],
      "cleanliness": "极简、干净、整洁的健身房美学风格"
    }
  },
  "lighting_and_atmosphere": {
    "lighting": "柔和的自然日光与室内环境照明混合",
    "shadows": "微妙逼真的阴影",
    "color_palette": "中性色调，冷灰色，黑色和柔和的高光",
    "mood": "自信、现代、生活方式健身美学"
  },
  "camera_settings": {
    "camera_type": "智能手机摄像头",
    "shot_type": "垂直镜面自拍",
    "framing": "从头部到臀部的中景构图",
    "focus": "身体和服装清晰对焦，背景略微柔和",
    "depth_of_field": "浅景深，逼真的智能手机效果"
  },
  "image_quality": {
    "style": "照片级写实",
    "resolution": "4K",
    "aspect_ratio": "9:16",
    "details": "高皮肤纹理真实感，自然比例，无 AI 伪影",
    "post_processing": "轻微对比度增强，自然色彩分级"
  },
  "constraints": {
    "avoid": [
      "夸张的身体比例",
      "人工皮肤纹理",
      "过度锐化",
      "不自然的灯光",
      "可见的 AI 扭曲"
    ]
  }
}
```