2x2 网格电影感夜景情侣肖像，带身份锁定

```json
{
  "generation_request": {
    "meta_data": {
      "task_type": "cinematic_night_couple_2x2_grid_identity_lock",
      "language": "zh-Hans",
      "priority": "highest",
      "version": "v1.0_DUSK_COUPLE_LIFT_ROMANCE_2X2_IDLOCK"
    },
    "input": {
      "mode": "image_to_image",
      "reference_image_usage": "very_high",
      "preserve_identity": true,
      "preserve_facial_features": true,
      "preserve_skin_tone": true,
      "preserve_pose": false,
      "preserve_hand_structure": true,
      "notes": "重要提示：画面中有两个人。请使用两张独立的参考图片：一张用于女性，一张用于男性。输出必须尽可能地保留两人的身份和面部比例，使其与参考图片一致。创建一个 2x2 网格拼贴（四张不同的照片），展示同一对情侣，穿着相同的服装风格，营造相同的夜间氛围。无文字，无标志，无水印。"
    },
    "output": {
      "aspect_ratio": "4:5",
      "resolution": "ultra_high",
      "num_images": 1,
      "layout": {
        "type": "grid",
        "rows": 2,
        "cols": 2,
        "gutter": "thin"
      },
      "sharpness": "filmic_crisp",
      "grain": "subtle_analog"
    },
    "scene": {
      "environment": "户外夜晚/黄昏场景，深蓝色天空，远处地平线有微弱的暖色光，远处有少量城市灯光",
      "mood": "浪漫电影感夜间肖像，亲密而自然，电影剧照感"
    },
    "wardrobe": {
      "man": "白色无袖背心，运动休闲风",
      "woman": "白色修身短袖上衣，大耳环，长发飘逸"
    },
    "lighting": {
      "style": "电影感低光照，带闪光灯 + 暖色轮廓光",
      "key_light": "面部柔和暖色主光（如手机闪光灯或小型 LED），不过曝",
      "rim_light": "头发和肩膀上的暖色轮廓光",
      "background": "深蓝色夜间色调，干净整洁"
    },
    "camera": {
      "look": "35mm 胶片剧照感",
      "lens": "50mm 和 85mm 镜头感",
      "depth_of_field": "浅到中等景深，面部清晰，背景柔和模糊",
      "color_grade": "冷蓝色阴影 + 暖色皮肤高光，微妙的光晕"
    },
    "panels": {
      "panel_1": "宽幅浪漫抱起：男士托住女士腰部/臀部；女士双臂向上伸向天空，头向后仰，头发飘逸；深蓝色黄昏背景",
      "panel_2": "亲密特写侧面：情侣非常靠近地面对面，女士带着温柔的微笑仰视男士；男士俯视；面部和眼睛锐利清晰",
      "panel_3": "红光自拍特写：强烈的红色凝胶光笼罩在两人脸上；男士在前看向镜头，女士在他身后微笑；保持身份完美；无字幕或水印",
      "panel_4": "宽幅拥抱抱起：男士再次抱起女士；女士双臂环绕男士颈部，头向后仰大笑；相同的黄昏背景和光线连贯性"
    },
    "identity_rules": {
      "two_people_only": true
    }
  }
}
```