坦率的街頭浪漫提示 (伊斯坦堡地鐵)

```json
{
  "generation_request": {
    "meta_data": {
      "tool": "NanoBanana Pro",
      "task_type": "photoreal_candid_street_romance",
      "version": "v2.0_METRO_ENTRANCE_SCARF_FIX_EN",
      "priority": "highest"
    },
    "output_settings": {
      "aspect_ratio": "4:5",
      "orientation": "portrait",
      "resolution_target": "ultra_high_res",
      "render_style": "ultra_photoreal_candid_street_film_still",
      "sharpness": "crisp_but_natural",
      "film_grain": "subtle_35mm",
      "color_grade": "restrained_realism_city",
      "dynamic_range": "natural_not_hdr",
      "skin_rendering": "real_texture_no_retouch"
    },
    "global_rules": {
      "camera_language": "35mm 鏡頭等效焦距，手持抓拍構圖，紀錄片質感",
      "lighting_language": "城市自然日光 + 地鐵入口實用光源，無閃光燈",
      "authenticity_markers": "真實人群氛圍，背景僅輕微模糊，無 AI 光暈"
    },
    "creative_prompt": {
      "scene_summary": "{argument name=\"location\" default=\"Istanbul\"} 地鐵入口，寒冷的一天。情侶停下腳步。他輕柔地為她整理圍巾。公共場所中一個微小的關懷時刻。",
      "subjects": {
        "count": 2,
        "description": "同一對情侶（20 歲出頭），普通人，臉部清晰可見",
        "expression": "溫柔專注和害羞的溫暖，僅微表情",
        "skin_and_face": "真實膚質，無修飾，輕微眼下陰影"
      },
      "wardrobe_and_props": {
        "clothing": "中性色調的簡約外套/夾克，略有皺褶，無品牌標誌",
        "props": "手中一張地鐵卡，一個背包肩帶，無品牌標誌"
      },
      "micro_action": "他調整她的圍巾；她抬頭看了一秒；眼神接觸持續片刻後自然斷開",
      "environment_details": {
        "location": "伊斯坦堡地鐵入口氛圍",
        "background": "向下延伸的樓梯，欄杆，模糊的通勤者，城市紋理，無可讀文字"
      },
      "composition": "平視中景，不完美的裁切，臉部清晰，背景自然虛化",
      "mood": "靜謐的關懷，不做作的愛"
    },
    "negative_prompt": [
      "攝影棚燈光",
      "閃光燈",
      "美顏修飾",
      "塑膠皮膚",
      "模特兒臉孔",
      "完美對稱",
      "HDR",
      "AI 光暈",
      "文字",
      "標誌",
      "浮水印"
    ]
  }
}
```