{
  "study": "中国出口工厂独立站证据字段覆盖率(2026-08 第一轮)",
  "measuredAt": "2026-08-22",
  "sample": {
    "frame": "公开搜索结果手工筛选的中国出口生产企业官方独立站首页,覆盖至少 6 个行业;平台店铺页、目录站与无法打开的站点已排除。",
    "contacted": 56,
    "analyzed": 53,
    "excluded": 3,
    "excludedByReason": {
      "取数超时": 2,
      "页面返回了 HTTP 444": 1
    }
  },
  "methodNote": "每站只取首页一次,分析项为体检引擎 15 项中除 response-time 外的 14 项;只发布聚合数据。",
  "fieldCoverage": [
    {
      "id": "https",
      "good": 35,
      "warn": 0,
      "fail": 18,
      "goodPct": 66
    },
    {
      "id": "viewport",
      "good": 41,
      "warn": 0,
      "fail": 12,
      "goodPct": 77.4
    },
    {
      "id": "title",
      "good": 33,
      "warn": 20,
      "fail": 0,
      "goodPct": 62.3
    },
    {
      "id": "description",
      "good": 46,
      "warn": 7,
      "fail": 0,
      "goodPct": 86.8
    },
    {
      "id": "h1",
      "good": 32,
      "warn": 21,
      "fail": 0,
      "goodPct": 60.4
    },
    {
      "id": "english-entry",
      "good": 36,
      "warn": 1,
      "fail": 16,
      "goodPct": 67.9
    },
    {
      "id": "contact-email",
      "good": 16,
      "warn": 37,
      "fail": 0,
      "goodPct": 30.2
    },
    {
      "id": "instant-contact",
      "good": 18,
      "warn": 35,
      "fail": 0,
      "goodPct": 34
    },
    {
      "id": "inquiry-form",
      "good": 32,
      "warn": 21,
      "fail": 0,
      "goodPct": 60.4
    },
    {
      "id": "trust-keywords",
      "good": 20,
      "warn": 33,
      "fail": 0,
      "goodPct": 37.7
    },
    {
      "id": "og-tags",
      "good": 18,
      "warn": 35,
      "fail": 0,
      "goodPct": 34
    },
    {
      "id": "lang-attr",
      "good": 36,
      "warn": 17,
      "fail": 0,
      "goodPct": 67.9
    }
  ],
  "conditionalFindings": [
    {
      "id": "mixed-content",
      "detected": 22
    },
    {
      "id": "spam-injection",
      "detected": 0
    }
  ],
  "score": {
    "median": 58,
    "grades": {
      "A": 1,
      "B": 9,
      "C": 15,
      "D": 15,
      "E": 13
    }
  }
}