{
  "id": "SC-2.4.1",
  "rulePrefix": "SC-2.4.1",
  "variant": null,
  "ruleType": "synthetic-sc",
  "scanScope": "specimen",
  "synthetic": true,
  "status": "current",
  "title": "Long navigation with no skip mechanism",
  "summary": "Repeated navigation blocks appear before main content with no bypass link.",
  "whyItFails": "Keyboard users must tab through every navigation link on each page because there is no skip link or landmark shortcut to main content.",
  "principles": [
    "operable"
  ],
  "guidelines": [
    "2.4"
  ],
  "successCriteria": [
    {
      "id": "2.4.1",
      "name": "Bypass Blocks",
      "level": "A",
      "slug": "bypass-blocks"
    }
  ],
  "versions": [
    "2.0",
    "2.1",
    "2.2"
  ],
  "automatable": "partial",
  "requires": [
    "html"
  ],
  "isolated": true,
  "pairWith": [],
  "w3c": {
    "understanding": [
      "https://www.w3.org/WAI/WCAG22/Understanding/bypass-blocks"
    ],
    "quickref": [
      "https://www.w3.org/WAI/WCAG22/quickref/#bypass-blocks"
    ]
  },
  "specimen": {
    "html": "<nav><a href=\"nav1.html\">Home</a> <a href=\"nav2.html\">About</a></nav>\n<main><h1>Article</h1><p>No skip link to bypass repeated navigation blocks.</p></main>",
    "css": "",
    "js": "",
    "assets": []
  },
  "expectedFindings": [
    {
      "sc": "2.4.1",
      "outcome": "fail",
      "note": "Specimen demonstrates failure of 2.4.1."
    }
  ],
  "mustNotFlag": [],
  "manualCheck": "Confirm no skip link, heading, or landmark provides a bypass for repeated blocks.",
  "generated": {
    "url": "https://wcagfail.patternd.io/specimens/SC-2.4.1/",
    "lastmod": "2026-10-08"
  }
}