WCAG Success Criteriawcag-2.2-AA
WCAG 3.1.2: Language of Parts
WCAG 3.1.2 requires that any passage, phrase, or section of web content written in a language different from the page's primary language must be programmatically identified using the lang attribute. This enables assistive technologies, especially screen readers, to switch pronunciation engines automatically and render content accurately for users who rely on audio output.