{
  "case": "C07-N07",
  "passed": true,
  "python": "3.12.4",
  "playwright": "1.58.0",
  "browser": "145.0.7632.6",
  "backend": "Chromium headless；ANGLE SwiftShader启动参数；WebGL实际renderer见题内结果",
  "input_scope": "Playwright浏览器鼠标/键盘与页面API实跑；无实体硬件或业务控制",
  "result": {
    "rateChangeSnapshot": {
      "rate": 2,
      "volume": 1
    },
    "events": [
      {
        "type": "ratechange",
        "rate": 2,
        "volume": 1,
        "muted": false
      },
      {
        "type": "volumechange",
        "rate": 2,
        "volume": 0.25,
        "muted": false
      },
      {
        "type": "volumechange",
        "rate": 2,
        "volume": 0.25,
        "muted": true
      }
    ]
  },
  "unmeasured": [
    "实体触摸屏和GPU性能",
    "Firefox/Safari/WebView",
    "辅助技术朗读与真人可用性",
    "目标展项和业务服务"
  ]
}