Use when reviewing a website, web page, screenshot, or web copy against UX best practices grounded in human behavior rather than current fashion — auditing readability, scannability, visual hierarchy, cognitive load, or trust, separating what's evidence-backed from what's merely in style, with every claim tied to a real cited source. Triggers include "how strong is this page," "review my site's UX," "is this good design or just trendy," "evidence-based UX check," or asking whether a layout/copy follows web usability research.