Core Concepts Accessibility Tree vs DOM : Visually hiding an element (e.g., ) behaves differently for screen readers than or . The tool returns the accessibility tree of the page, which represents what assistive technologies "see", making it the most reliable source of truth for semantic structure. Reading web.dev documentation : If you need to research specific accessibility guidelines (like ), you can append to the URL (e.g., ) to fetch the clean, raw markdown version. This is much easier to read! Workflow Patterns 1. Automated Audit (Lighthouse) Start by running a Lighthouse accessibility…