详细自拍肖像生成提示

```json
{
  "prompt_type": "image_generation",
  "subject": {
    "demographics": "{argument name=\"demographics\" default=\"年轻女性，大约 20 多岁\"}",
    "hair": {
      "color": "{argument name=\"hair color\" default=\"金色，带有较浅的挑染和较深的根部\"}",
      "style": "{argument name=\"hair style\" default=\"长而蓬松的波浪，中分，丰盈有质感\"}",
      "texture": "柔软，略显凌乱/蓬松"
    },
    "face": {
      "skin_tone": "浅/白皙肤色，暖色调",
      "eyes": "{argument name=\"eye color\" default=\"大眼睛，浅蓝灰色，睫毛突出\"}",
      "eyebrows": "眉形清晰，有弧度，自然棕色",
      "lips": "饱满，柔和的粉色/裸色，中性表情",
      "makeup": "自然“裸妆”效果，强调睫毛， subtle 高光"
    }
  },
  "apparel": {
    "top": {
      "item": "罗纹针织开衫或上衣",
      "color": "白色",
      "details": "长袖，纽扣前襟（小白色纽扣），修身，圆领/V 领"
    },
    "bottom": {
      "item": "牛仔裤",
      "color": "浅蓝色水洗",
      "visibility": "腰带和上半部分可见"
    },
    "accessories": [
      "细银链项链，带小吊坠"
    ]
  },
  "pose_and_framing": {
    "type": "自拍",
    "angle": "高角度（相机举过脸部向下拍摄）",
    "framing": "特写肖像至上半身",
    "body_position": "手臂伸出画面外握持相机，头部略微向上倾斜对着镜头",
    "gaze": "与相机镜头直接眼神接触"
  },
  "environment": {
    "setting": "室内走廊或门厅",
    "flooring": "高光黑色方块瓷砖",
    "background_elements": [
      "左侧的白色门框和门",
      "背景中相邻走廊可见木地板",
      "白色踢脚线和墙壁",
      "背景走廊中模糊的鞋子"
    ]
  },
  "technical_details": {
    "camera_model": "智能手机相机（例如 iPhone 13 Pro 前置摄像头）",
    "lens": "广角镜头，约 23mm 等效焦距",
    "aperture": "f/2.2",
    "shutter_speed": "1/60s",
    "iso": "ISO 100",
    "white_balance": "自动白平衡，略偏冷的室内日光",
    "lighting": "柔和、漫射的前置照明（讨人喜欢的美容光）",
    "focus": "眼睛和面部对焦清晰，景深较浅",
    "resolution": "高分辨率数字拍摄"
  }
}
```