{
  "model": "seedream-5.0-lite",
  "prompt": "以图一为产品主体，图二为色彩参考，制作横幅海报，标题「慢下来，喝杯茶」。",
  "resolution": "4k",
  "size": "16:9",
  "n": 1,
  "images": [
    "https://media.example.com/product.png",
    "https://media.example.com/colors.png"
  ]
}