Conciseness

The body is dense, opinionated rules with zero basic-concept padding ('If it could have been generated by a default prompt, it is not good enough'), but routing precedence is stated twice (the Chinese gut-feel paragraph and the Mode Picker intro both say generated-image assets take precedence over screenshot evidence) and long multi-clause sentences like the direction-lock paragraph could be trimmed, matching 'efficient; minor instances that could be trimmed' rather than 5's every-token-earns-its-place.

Actionability

Fully executable instruction-only guidance with specific thresholds ('at most two sub-questions', 'Survey 2-3 mature products', 'more than three distinct text styles'), exact artifacts to read ('theme.ts, colors.ts, tokens.css, _variables.scss'), a numbered five-dimension lock with a hard gate ('Do not write code until all five are resolved'), and a concrete three-line thesis template; specific examples cover the common cases.

Workflow Clarity

The sequence is clear (preflight, mode pick, direction lock, build under hard rules, aesthetic review, handoff, 'After handoff, stop') with explicit validation and feedback loops: the direction-lock gate, the AI Slop Test, 'If any check fails, fix first', self-rendered viewport states with a named fallback when the host cannot render, and drift recovery that identifies 'the specific element that broke first'.

Progressive Disclosure

All seven referenced bundle files exist and sit one level deep, every named section anchor ('App shell rules', 'Absolute Bans', 'Aesthetic Review Checks', 'Options Guide', 'Reference-site Brand Presets') is real in design-reference.md, and the Mode Picker table maps each ask to its file; sibling cross-references between mode files stay lateral rather than nested, and the body deliberately keeps compact bans inline for lightweight modes while delegating full detail.

Specificity

Names several concrete actions ('building or restyling pages, components, or typography', 'screenshot-grounded visual polish'), but 'Produces distinctive production UI' is a soft quality claim and coverage has minor gaps (no mention of design systems, tokens, or DESIGN.md artifacts), matching 'lists several specific actions; minor gaps' rather than 5's comprehensive action list.

Completeness

Both parts are explicit: 'Produces distinctive production UI and screenshot-grounded visual polish' (what) and 'Use when building or restyling pages, components, or typography' (when), but the when clause omits screenshot-complaint and aesthetic-rejection triggers that the skill body itself treats as core, so it fits 4 ('when' could be more explicit or specific) rather than 5's concrete trigger phrases.

Trigger Term Quality

'building or restyling pages, components, or typography' plus 'UI' are natural user phrasings, but common variations a user would actually say ('design', 'make it look good', 'looks ugly', 'frontend', 'redesign') are absent from the description field, matching 'good keyword coverage; a few natural terms missing' rather than 5's synonym-complete coverage.

Distinctiveness Conflict Risk

The explicit exclusion 'Not for backend logic or data pipelines' and the UI/visual niche make it mostly distinct, but 'restyling pages... or typography' still overlaps with document-typesetting and general frontend-building skills, matching 'minor overlap risk with closely related skills' rather than 5's minimal conflict.