详细的后台镜子自拍分析提示

```json
{
"metadata": {
"confidence_score": "高",
"image_type": "照片",
"primary_purpose": "社交媒体/幕后/抓拍"
},
"composition": {
"rule_applied": "居中构图",
"aspect_ratio": "3:4 垂直",
"layout": "单一主体",
"focal_points": [
"主体的脸部和上半身",
"带波点手机壳的智能手机"
],
"visual_hierarchy": "视线首先被主体的脸部吸引，然后移到手机壳，再向下到躯干和服装细节，最后扫视杂乱的后台环境。",
"balance": "不对称——左侧是沉重的黑色负空间，右侧是杂乱的细节，主体居中"
},
"color_profile": {
"dominant_colors": [
{
"color": "锈白色",
"hex": "#8A5A4A",
"percentage": "15%",
"role": "主体服装（上衣）"
},
{
"color": "哑光黑",
"hex": "#151515",
"percentage": "45%",
"role": "背景窗帘/手机/裙子"
},
{
"color": "苍白瓷肤色",
"hex": "#F3E2D5",
"percentage": "20%",
"role": "主要主体"
},
{
"color": "铂金色",
"hex": "#E6D6B8",
"percentage": "15%",
"role": "头发"
},
{
"color": "胶合板米色",
"hex": "#A89F91",
"percentage": "5%",
"role": "天花板结构"
}
],
"color_palette": "中性色调带暖色点缀（棕色/金色对比黑色）",
"temperature": "混合——冷色调黑色对比皮肤上的暖色人造光",
"saturation": "适中",
"contrast": "高对比度（明亮主体对比深色背景）"
},
"lighting": {
"type": "人造光/后台化妆灯",
"source_count": "多个光源（可能是化妆镜灯阵）",
"direction": "正面",
"directionality": "适度定向",
"quality": "硬光",
"intensity": "明亮",
"contrast_ratio": "高对比度",
"mood": "原始/抓拍/后台/前卫",
"shadows": {
"type": "清晰的硬边缘",
"density": "深黑色",
"placement": "主体身后黑色窗帘上",
"length": "短"
},
"highlights": {
"treatment": "高光",
"placement": "额头、鼻梁、锁骨、肩膀、颧骨"
},
"ambient_fill": "极少——光线衰减迅速",
"light_temperature": "中性/略带冷调的白色"
},
"technical_specs": {
"medium": "数码摄影（智能手机镜面自拍）",
"style": "写实/抓拍/快照",
"texture": "略带颗粒感/可见数码噪点",
"sharpness": "适度锐利",
"grain": "数码噪点（暗部可见 ISO 颗粒）",
"depth_of_field": "景深大——由于广角镜头和小传感器，所有物体相对清晰",
"perspective": "视线水平/镜面反射"
},
"artistic_elements": {
"genre": "自拍/名人风格/幕后",
"influences": [
"K-pop 偶像美学",
"Y2K 复古时尚",
"随性 Instagram 快拍"
],
"mood": "酷炫/漫不经心/自信/匆忙",
"atmosphere": "后台混乱、演出前准备、真实记录",
"visual_style": "杂乱/真实/闪光灯美学"
},
"typography": {
"present": true,
"fonts": [
{
"type": "无衬线体",
"wei": null
}
]
}
}
```