{
  "dimension": "background_asset",
  "type": "实质",
  "highlight_cluster": "清新雅致的白绿配色 / 唯美梦幻的光影与景深",
  "description": "户外自然背景素材，包含三种典型状态：清晰绿色草地+树木（img_1）、高饱和绿色背景（img_4）、逆光+散景梦幻背景（img_2）",
  "files": {
    "background_green_img1.png": {
      "source_image": "img_1",
      "state": "clear green trees and grass, soft natural light",
      "purpose": "清晰自然绿色背景参考，白绿配色基础"
    },
    "background_green_img4.png": {
      "source_image": "img_4",
      "state": "vivid saturated green trees and grass, bright daylight",
      "purpose": "高饱和绿色背景参考，白绿配色最典型"
    },
    "background_bokeh_img2.png": {
      "source_image": "img_2",
      "state": "backlit green trees with lens flare and bokeh light spots",
      "purpose": "逆光散景梦幻背景参考，光影景深亮点"
    }
  },
  "mapping": [
    {
      "image": "img_1",
      "paragraph": "段落1.3",
      "type": "实质",
      "feature": "自然绿色背景（草地+树木）",
      "highlight": "清新雅致的白绿配色"
    },
    {
      "image": "img_2",
      "paragraph": "段落2.3",
      "type": "实质",
      "feature": "逆光散景自然背景",
      "highlight": "唯美梦幻的光影与景深"
    },
    {
      "image": "img_3",
      "paragraph": "段落3.3",
      "type": "实质",
      "feature": "自然背景（含远处建筑）",
      "highlight": "唯美梦幻的光影与景深"
    },
    {
      "image": "img_4",
      "paragraph": "段落4.3",
      "type": "实质",
      "feature": "高饱和绿色自然背景",
      "highlight": "清新雅致的白绿配色"
    },
    {
      "image": "img_5",
      "paragraph": "段落5.3",
      "type": "实质",
      "feature": "虚化绿色草地背景",
      "highlight": "唯美梦幻的光影与景深"
    }
  ],
  "consistency_elements": ["自然背景"],
  "generation_notes": "背景主色调为高饱和度草木绿（HSV: 100-120°, S>150, V>100），包含草地（下半部分）和树木（上半部分），img_2/3/5有逆光散景效果"
}