{
  "dimension": "natural_background_asset",
  "type": "实质",
  "highlight_cluster": "清新雅致的白绿配色",
  "description": "高饱和度自然草木绿背景，草坪、树木和阳光构成的户外环境，是白绿配色形式的实质载体",
  "files": {
    "background_ref_img4.png": {
      "source_image": "img_4",
      "purpose": "自然背景参考（白绿配色最典型）"
    },
    "background_ref_img1.png": {
      "source_image": "img_1",
      "purpose": "自然背景参考（绿色草地+树木）"
    }
  },
  "mapping": [
    {
      "image": "img_1",
      "paragraph": "段落1.3",
      "type": "实质",
      "feature": "自然草木背景"
    },
    {
      "image": "img_2",
      "paragraph": "段落2.2",
      "type": "实质",
      "feature": "自然草木背景（含阳光）"
    },
    {
      "image": "img_3",
      "paragraph": "段落3.2",
      "type": "实质",
      "feature": "自然草木背景（含远处建筑）"
    },
    {
      "image": "img_4",
      "paragraph": "段落4.2.1",
      "type": "实质",
      "feature": "自然草木背景"
    },
    {
      "image": "img_5",
      "paragraph": "段落5.3",
      "type": "实质",
      "feature": "自然草木背景（虚化）"
    }
  ],
  "consistency_elements": [
    "自然背景"
  ]
}