# accessibility.chat — Luke AI Accessibility Platform & Research Engine

> Interactive AI Accessibility Compliance Assistant & Source-Linked Research Engine

`accessibility.chat` is an AI-powered compliance platform anchored by **Luke AI Assistant** for interactive PDF tag-tree screening, policy triage, and natural-language legal guidance over 88+ enforcement cases. It is backed by the **a11y Research Engine**, a deep-dive knowledge base applying the CORS framework (Community, Operational, Risk, Strategic) to digital accessibility jurisprudence.

## Core Platform Resources

- [Luke AI Assistant Workspace](https://accessibility.chat/luke): Interactive AI workspace for PDF tag-tree screening, document text evaluation, municipal/corporate accessibility policy triage, and WCAG 2.2 guidance.
- [a11y Research Engine](https://accessibility.chat/research): Deep 3,000–5,000+ word research syntheses and daily legal analysis covering ADA Title II/III regulations, DOJ settlements, and WCAG success criteria.
- [Methodology & CORS Framework](https://accessibility.chat/methodology): 6-stage editorial review pipeline, source verification rules, CORS framework, and AI transparency protocols.
- [AI Analyst Lenses](https://accessibility.chat/authors): Dedicated analytical lenses (Marcus, Patricia, Jamie, Keisha, David) providing distinct operational and legal perspectives.

## Primary Analytical Focus Areas

- **ADA Title II (28 CFR Part 35)**: State & local government web and mobile app accessibility regulations, WCAG 2.1 AA technical standards, and compliance timelines.
- **ADA Title III (28 CFR Part 36)**: Public accommodations digital accessibility litigation, DOJ consent decrees, structured settlements, and defense compliance strategies.
- **WCAG 2.1 & 2.2 Standards**: Technical breakdowns of success criteria including contrast (1.4.3, 1.4.11), keyboard navigation (2.1.1), focus appearance (2.4.13), target size (2.5.8), and accessible authentication (3.3.8).
- **Document & PDF Accessibility**: Federal PDF standards, WCAG-EM 2.0 evaluation methodologies, tag tree structure, reading order, and document remediation frameworks.

## WCAG 2.2 Criteria Compliance Guides

- [WCAG 1.4.3 Contrast (Minimum)](https://accessibility.chat/wcag/1-4-3-contrast-minimum): Technical contrast ratios (4.5:1 text, 3:1 large text), DevTools testing, and CSS remediation tokens.
- [WCAG 2.1.1 Keyboard](https://accessibility.chat/wcag/2-1-1-keyboard): Keyboard focus order, event listener requirements, and interactive control patterns.
- [WCAG 2.4.7 Focus Visible](https://accessibility.chat/wcag/2-4-7-focus-visible): Unambiguous focus indicator ring standards and `:focus-visible` styling.
- [WCAG 2.5.8 Target Size (Minimum)](https://accessibility.chat/wcag/2-5-8-target-size-minimum): 24x24px / 44x44px touch target padding standards for mobile pointer inputs.

## Feeds & Search Indexes

- [RSS News Feed](https://accessibility.chat/feed.xml): Machine-readable XML feed of latest accessibility articles and legal analysis.
- [Sitemap Index](https://accessibility.chat/sitemap.xml): Complete URL index of static pages, articles, research papers, and author lenses.