Nano Banana Pro 的垂直超高细节图像设置

```json
{
  "image_info": {
    "width": 4096,
    "height": 8192,
    "aspect_ratio": "1:2",
    "orientation": "vertical"
  },

  "technical": {
    "resolution": "8k",
    "dimensions": "4096x8192 or higher",
    "quality": "ultra high detail"
  }
}
```