神秘力量剪影：卷发粗胡须男士黑白肖像

Gemini Nano Banana 3.0
Prompt:
{
 "request": {
 "type": "image_generation",
 "parameters": {
 "dimensions": {
 "width": 1024,
 "height": 1024,
 "aspect_ratio": "1:1"
 },
 "format": "jpg",
 "count": 1
 },
 "content": {
 "prompt": "Close-up black and white portrait of a man with tousled hair and a rough beard, tilting his head slightly upward as light falls dramatically from above. His eyes remain in shadow, creating a mysterious, powerful silhouette-like mood with strong contrast.",
 "negative_prompt": null
 }
 }
}