Agent Skills: designing-interfaces

Makes a product's UI look deliberate and current instead of dated or improvised — auditing a screen against hierarchy, type scale, spacing scale, color tokens, layout and component consistency; introducing design tokens before restyling anything; and verifying every change visually with before/after screenshots. Use when building or restyling any web or app screen, reviewing a UI that looks old, cluttered or inconsistent, starting a design system for an existing app, or planning a design-improvement issue.