```json
{
"Prompt_id": "silhouette_dark_001_signature",
"description": "黑暗中带有签名的极简戏剧性剪影",
"scene": {
"environment": "完全黑色的虚空背景",
"lighting": {
"type": "单点聚光灯",
"position": "主体正上方",
"intensity": "柔和但聚焦",
"effect": "主体周围的圆形光晕，平滑淡出"
}
},
"subject": {
"type": "人物剪影",
"pose": "居中站立，面向镜头",
"detAIls": "完全黑色的剪影，无面部特征",
"shadow": {
"style": "长而硬朗的阴影",
"direction": "朝向左下方",
"sharpness": "高对比度"
}
},
"composition": {
"framing": "超广角，留有大量负空间",
"mood": "神秘、孤独、电影感",
"aspect_ratio": "4:5"
},
"signature": {
"text": "{argument name=\"signature text\" default=\"Vivek HY\"}",
"position": "右下角",
"style": "极简、干净、白色",
"opacity": "70%"
},
"post_processing": {
"contrast": "非常高",
"glow": "柔和的径向光",
"grain": "低"
}
}
```