{
  "schemaVersion": 2,
  "sourceKind": "structured-spec",
  "confidence": "high",
  "slug": "anchornav",
  "name": "锚点导航 AnchorNav",
  "semanticTypeCandidates": [
    "anchor",
    "toc"
  ],
  "variantDimensions": [
    {
      "name": "state",
      "values": [
        "active",
        "default"
      ]
    },
    {
      "name": "level",
      "values": [
        "h1",
        "h2",
        "h3"
      ]
    }
  ],
  "representativeVariants": [
    {
      "state": "active",
      "level": "h2",
      "label": "当前章节高亮"
    },
    {
      "state": "default",
      "level": "h2",
      "label": "非当前章节"
    },
    {
      "state": "default",
      "level": "h3",
      "label": "嵌套层级"
    }
  ],
  "anatomy": {
    "position": "长页面右侧固定目录",
    "highlight": "滚动时高亮当前章节",
    "action": "点击平滑滚动到对应位置",
    "nesting": "支持层级嵌套"
  },
  "structurePatterns": {
    "position": "右侧固定",
    "scroll": "平滑滚动"
  },
  "usageHints": [
    "长页面右侧固定目录",
    "滚动时高亮当前章节",
    "点击平滑滚动到对应位置",
    "支持层级嵌套",
    "适用于帮助文档、长表单"
  ],
  "doNotInvent": [
    "滚动监听的实现方式",
    "浏览器地址栏锚点同步"
  ],
  "unknowns": [
    "层级缩进量",
    "高亮的判定偏移（offset）"
  ]
}