带有身份锁定的自然抓拍课堂肖像

```json
{
  "visual_theme": "自然、随性的课堂肖像",

  "render_quality": "超写实 8K，极致清晰细节，柔和的电影级写实感",

  "face_preservation": {
    "use_reference_face": true,
    "match_accuracy": "精确",
    "preserve_features": [
      "脸型",
      "眼睛大小和柔和度",
      "自然微笑",
      "肤色和肤质"
    ]
  },

  "subject_profile": {
    "gender": "女性",
    "age_range": "青年",
    "expression": "温暖、温柔的微笑，带着放松的自信",
    "pose": "身体略微前倾，双手放在桌上",
    "hair": "中长棕色头发，中分，自然散落"
  },

  "wardrobe_details": {
    "outfit": "宽松深色连帽衫",
    "style": "休闲、舒适、学生生活美学",
    "fabric": "柔软棉质，带有自然褶皱",
    "text_detail": "连帽衫胸部区域有细微的白色年份文字"
  },

  "environment_setting": {
    "location": "教室内部",
    "background_elements": [
      "木制橱柜",
      "白色天花板",
      "柔和的学术氛围"
    ],
    "depth_style": "背景略微模糊以突出主体"
  },

  "lighting_mood": {
    "light_source": "室内环境光",
    "tone": "柔和中性暖色调",
    "shadow_style": "极少阴影，均匀漫射光"
  },

  "camera_composition": {
    "angle": "平视中近景",
    "framing": "主体居中，自然裁剪",
    "focus": "面部清晰对焦，背景平滑分离"
  },

  "color_grading": {
    "palette": "中性灰色和温暖肤色",
    "contrast": "低对比度，自然外观"
  },

  "overall_feel": "怀旧、真实、青春、平静",

  "signature": "{argument name=\"signature\" default=\"VIVEK HY\"}"
}
```