JSON 进阶模板（推荐给 Agent 调用）

{
  "type": "Infographic",
  "topic": "Urban Metabolism",
  "audience": "General Public",
  "structure": {
    "title_area": "城市生命系统图谱",
    "layout": "Isometric cutaway, 12 numbered panels",
    "modules": [
      {"title": "能源", "icon": "lightning", "text": "Power flows"},
      {"title": "水循环", "icon": "water_drop", "text": "Water flows"}
    ]
  },
  "style": {
    "aesthetic": "Scientific atlas",
    "colors": "Low saturation, color-coded flows",
    "background": "Light paper texture"
  },
  "constraints": "No cyberpunk, no gibberish text, strict structural layout"
}