浪漫海滩情侣特写，同时保护身份

```json
{
  "generation_request": {
    "meta_data": {
      "task_type": "cinematic_romantic_couple_beach_closeup",
      "language": "en",
      "priority": "highest",
      "version": "v1.1_BEACH_FLOWER_TUCK_STRICT_IDENTITY_HAIRLOCK"
    },
    "input": {
      "mode": "image_to_image",
      "reference_image_usage": "very_high",
      "preserve_identity": true,
      "preserve_facial_features": true,
      "notes": "以最大相似度匹配上传的参考面部。面部结构、眼睛、鼻子、嘴唇、笑容、肤色、发际线和所有头发属性的纹理必须与参考图完全一致。不要改变年龄。不要风格化。不要出现身份漂移。"
    },
    "output": {
      "aspect_ratio": "4:5",
      "resolution": "ultra_high",
      "num_images": 4,
      "sharpness": "high",
      "grain": "subtle_analog"
    },
    "scene": {
      "concept": "在多岩石海滩上的浪漫抓拍瞬间",
      "environment": "背景是岩石构造，柔和的阴天日光，平静的海边氛围",
      "composition": "特写中景，情侣充满画面，景深较浅，背景柔和模糊",
      "action": "男人温柔地将一朵亮洋红色的花朵别在女人的耳后，女人则温暖地微笑着抬头看着他"
    },
    "subject": {
      "couple": {
        "woman": {
          "identity": "使用上传的参考女性面部作为主要身份锚点，确保最大相似度。",
          "expression": "真诚愉悦的笑容，眼睛因幸福而微微眯起",
          "hair": "头发必须与参考图匹配",
          "wardrobe": {
            "dress": "白色细肩带夏日连衣裙，修身胸衣，极简纹理，优雅干净"
          },
          "details": {
            "nails": "红色美甲",
            "jewelry": "精致简约的金色首饰（可选）"
          }
        },
        "man": {
          "identity": "使用上传的参考男性面部作为主要身份锚点，确保最大相似度。",
          "expression": "柔和深情地注视着女人",
          "hair": "头发必须与参考图匹配",
          "wardrobe": {
            "shirt": "白色长袖纽扣衬衫，轻薄面料，休闲海滩风格"
          },
          "accessories": "精致的金色调腕表"
        }
      }
    },
    "lighting": {
      "style": "自然柔和的日光",
      "direction": "漫射的顶/侧光",
      "contrast": "柔和",
      "skin_rendering": "逼真的毛孔和纹理，无塑料感"
    },
    "camera": {
      "lens": "50mm",
      "aperture": "f2.0",
      "depth_of_field": "浅景深",
      "focus": "眼睛和笑容清晰对焦"
    },
    "color_grading": {
      "look": "温暖的电影胶片色调",
      "palette": [
        "暖沙米色",
        "柔和的橄榄岩石色调",
        "柔和的奶油白色",
        "洋红色花朵点缀"
      ],
      "highlights": "暖色调",
      "shadows": "略"
    }
  }
}
```