visual hierarchy Shipped
What this lens looks for
Single primary CTA per screen with type="submit" or strong visual weight; heading hierarchy via <h1>–<h6> and font size/weight; interactive vs. static elements visually distinct; disabled state via disabled attribute + CSS
What its verifier checks
One primary action per screen; heading tags used in order; <button> vs. <span> used correctly for interactive vs. static; disabled attribute set on inactive controls