超近距離寫實情侶自拍，臉頰心形彩繪

```json
{
  "generation_request": {
    "meta_data": {
      "tool": "NanoBanana Pro",
      "task_type": "photorealistic_close_couple_selfie",
      "version": "v1.0_SOFT_HEART_CHEEK_SELFIE_MAXLOCK",
      "priority": "high"
    },
    "references": {
      "female_reference_image": "UPLOAD_FEMALE_REFERENCE (REQUIRED)",
      "male_reference_image": "UPLOAD_MALE_REFERENCE (REQUIRED)",
      "reference_rules": {
        "exactly_two_references_only": true,
        "preserve_identity_female": true,
        "preserve_identity_male": true,
        "identity_lock_strength_female": 0.995,
        "identity_lock_strength_male": 0.995,
        "strict_face_match": true,
        "no_identity_drift": true,
        "no_face_morphing": true,
        "no_beautification": true
      }
    },
    "output_settings": {
      "aspect_ratio": "1:1",
      "resolution_target": "ultra_high_res",
      "render_style": "photorealistic_soft_film_selfie",
      "sharpness": "natural",
      "film_grain": "subtle_analog",
      "dynamic_range": "natural_not_hdr"
    },
    "hard_constraints": [
      "僅限兩個人。",
      "臉部必須與上傳的參考圖片完全匹配。",
      "極近距離構圖（臉部填滿畫面）。",
      "無文字、無標誌、無浮水印。",
      "自然膚質（無塑膠感）。"
    ],
    "creative_prompt": {
      "scene_summary": "超近距離寫實情侶自拍。情侶臉頰緊貼，填滿畫面。每人臉頰上都畫有半顆手繪的紅色愛心，當臉部接觸時形成一顆完整的愛心。柔和、親密、青春的氛圍，帶有懷舊的膠片美學。",
      "composition": {
        "framing": "極端特寫，臉部在額頭和下巴處裁切",
        "pose": "臉頰緊貼，放鬆且充滿愛意",
        "expression": "溫柔的微笑，平靜的眼神，自然的真情流露"
      },
      "details": {
        "face_paint": "簡單的 {argument name=\"heart color\" default=\"red\"} 手繪愛心，略微不完美，啞光質感",
        "skin": "自然毛孔，臉頰微紅",
        "lips": "柔和的珊瑚色/桃色調，自然妝感",
        "eyes": "自然睫毛，淡妝"
      },
      "lighting": {
        "type": "柔和的室內環境光",
        "quality": "均勻、溫和、無刺眼陰影",
        "tone": "暖中性"
      },
      "style": {
        "look": "90 年代 / Y2K 休閒自拍",
        "texture": "輕微膠片顆粒，色彩略微柔和",
        "retouching": "極簡，真實"
      }
    },
    "negative_prompt": [
      "身份漂移",
      "換臉瑕疵",
      "過度平滑的皮膚",
      "塑膠感皮膚",
      "濃妝",
      "美顏濾鏡",
      "模糊的眼睛",
      "變形的五官",
      "多餘的人",
      "文字",
      "標誌",
      "浮水印",
      "卡通",
      "動漫",
      "CGI 渲染"
    ]
  }
}
```