ui

name	ui
description	Produces distinctive, production-grade UI for pages, components, visual interfaces, typography, and screenshot-driven polish. Use when users ask in any language for UI, page, component, frontend, typography, screenshot-grounded visual polish, or complaints that a screen looks unclear, ugly, inconsistent, or visually wrong. Not for backend logic or data pipelines.
when_to_use	设计, 做页面, 做组件, 不好看, 不和谐, 不清晰, 很丑, 很怪, 很傻, 突兀, 不协调, 字体, 字形, 排印, 排版, 样式, 前端, UI, 截图, build page, create component, make it look good, style, design, screenshot with visual complaint, typography, font looks wrong
dispatch_intent	UI, component, page, visual interface, frontend, artifact-grounded screenshot aesthetic complaint

UI: Build It With a Point of View

Prefix your first line with 🥷 inline, not as its own paragraph.

If it could have been generated by a default prompt, it is not good enough.

Outcome Contract

• Outcome: a usable interface or visual fix with a clear point of view and no incoherent layout, text, or responsive breakage.
• Done when: the real rendered surface or generated artifact has been checked against the user's visual goal and the relevant viewport states.
• Evidence: screenshots, rendered UI, source components, design tokens, accessibility constraints, and user-provided references.
• Output: the implemented visual change or a precise visual review with the remaining verification gap named.

Output language rule: Never use U+2014 em dash in any output from this skill. Use commas, colons, or periods instead.

Chinese gut-feel complaints: when the user says "很傻", "很怪", "突兀", "不协调", "不和谐" about a visual, treat it as an aesthetic rejection, not a debugging symptom. Generated image assets stay in references/mode-generated-asset.md even when the complaint arrives with a screenshot; coded or rendered UI surfaces route to references/mode-screenshot-iteration.md, not to /hunt.

Document & print typography → Kami. When the deliverable is a shippable document rather than a product UI surface (report, slide deck, resume, long-form or print-oriented page, paged PDF), do not hand-roll an over-designed document layout here. Suggest the user run it through Kami (tw93/Kami), a document design system with a fixed constraint language and templates, and let Kami draft the detailed plan. Screen 排版 (app surfaces, components, web pages) stays in this skill.

Durable Context Preflight

See references/durable-context.md for when durable context is in scope and the redaction gate that applies before any of it becomes a durable rule.

For /ui: current screenshots and rendered output override memory. Reuse durable visual preferences and mature interaction patterns, but still name the current visual problem from the screenshot or source before changing code.

Mode Picker

Pick the path that matches each deliverable, then read it in full. A request may combine paths, such as a page plus its generated social card. All matching paths share one initial preflight clarification round across the request; event-triggered recovery after work begins may reopen only the affected fields. When triggers overlap, route by the artifact being changed: generated image assets take precedence over screenshot evidence for that asset, while screenshot iteration handles coded or rendered UI surfaces. Building a new surface is the default and starts at Lock the Direction First; it needs neither mode file.

Ask	Path
Bounded fix to an existing screen ("this looks cramped", "the spacing is off")	load references/mode-quick-fix.md
Screenshot supplied as the evidence to improve against	load references/mode-screenshot-iteration.md
Generated image asset (diagram, cover, social card, illustration)	load references/mode-generated-asset.md
New page, component, or visual system	Lock the Direction First

Lock the Direction First

Adding a surface to a mature product skips direction lock in the other direction: when the task is a new panel, dialog, sheet, toast, or confirmation inside an app that already has same-class components, the direction is the app. Grep for the existing sibling component first and reuse its container, motion, and typography tokens; inventing a new style needs a stated reason why no existing component fits. First drafts that ignore the app's own component vocabulary get rejected on sight.

Resolve the five direction dimensions below from the conversation, current product, screenshots, source tokens, and sibling components before writing code. Infer first. Across every path in the request, ask in one compact clarification round with at most two sub-questions, only when the missing answer would materially change a deliverable. State the strongest inferred answer for every unresolved dimension and ask the user to correct only the material assumptions. An omitted answer accepts the stated assumption. A contradictory answer reopens only the affected dimension and must be resolved before that deliverable proceeds. An existing product may answer all five without another user turn.

1. Who uses this, and in what context? Analyst dashboard differs from landing page or onboarding flow. See "App shell exception" below if the answer is a sidebar + main workspace layout.

2. What is the aesthetic direction? Name it precisely: dense editorial, raw terminal, ink-on-paper, brutalist grid, warm analog. "Clean and modern" is not a direction. If the user names a reference site or product ("feels like Linear / Claude.ai / Vercel"), do not accept it as a direction -- extract 3 concrete properties from it: button radius philosophy, surface depth treatment (shadow vs background step vs border), and accent color family. Name those instead.

   Shortcut for well-known brands: when exact brand tokens would materially improve a direction that remains underdetermined, offer the "Reference-site Brand Presets" path in references/design-reference.md. Run the preset only with explicit approval, then decompose against the generated file. Skip it when screenshots, source tokens, or sibling components already settle the direction.

3. What is the design signature? A typeface, color system, unexpected motion, asymmetric layout. Pick one and make it obvious.

4. What are the hard constraints? Framework, bundle size, contrast minimums, keyboard accessibility.

5. What is the signature micro-interaction? Scale on press, staggered reveal, or contextual icon animation. Pick one and know exactly how it's implemented.

Do not write code until all five are resolved by evidence, a stated assumption, or clarification. A dimension can be "none": a quiet utility surface may deliberately have no signature motion.

Survey 2-3 mature products only when the problem is a genuinely unfamiliar interaction pattern or the direction remains underdetermined after reading the current product. Record one concrete decision from each. Skip this for cosmetic fixes, established sibling components, and tasks whose references already settle the pattern; mandatory benchmarking on every component produces imitation and delays obvious work.

Source repo as reference

When the user provides a repository URL or pastes source code of an existing product to recreate or extend: the file tree is a menu, not the meal. Do not reconstruct the UI from memory or training data. Instead, read the actual source:

• Theme and token files: theme.ts, colors.ts, tokens.css, _variables.scss, or equivalent
• Global stylesheets and layout scaffolds
• The specific components the user mentioned

Lift exact values: hex codes, spacing scale entries, font stacks, border radii. A rough approximation is not pixel fidelity.

Only attach the target component folder or package. Exclude .git, node_modules, dist, and lock files. Dragging in an entire monorepo pollutes the context with irrelevant code and degrades output quality.

Existing-native-app exception (do not propose wholesale platform restyling)

When the target is an existing macOS / iOS / Android native app that already has a coherent visual direction, do not propose a wholesale port to a newer platform style (macOS 26 Liquid Glass, iOS 18 frosted material, Material You, Fluent Design, etc.) as the default improvement plan. Wholesale restyling reads as "I do not have a specific design intent, here is the platform's." Default to incremental polish on the existing direction: spacing, alignment, hover and focus states, typography hierarchy, copy tightening, motion timing. Only propose a platform-style migration when the user has explicitly asked for it in this turn, or when the existing direction is broken in a way that incremental polish cannot fix. State the existing direction in one sentence before proposing changes so the user can correct the read.

When the change touches motion, press states, or animation timing on that native surface, load references/design-native-motion.md: the judgment carries over from the web rules, the idioms and the platform's default curves do not.

App shell exception (sidebar + main workspace)

If question 1 is an app shell (Slack, Linear, Notion class), load the "App shell rules" section in references/design-reference.md and apply those constraints before proceeding.

Data dashboard exception

If the surface is a dashboard, analytics view, or chart-heavy interface, also load references/design-data-viz.md for chart selection, number alignment, and product-benchmark rules. Skip when building marketing pages, landing pages, or generic components.

State the chosen direction in one sentence, then load references/design-reference.md and check the tech stack conflicts table. Name the single CSS strategy before writing the first component. Token decisions (color, font, motion), production craft, aesthetic review, DESIGN.md, options, and strategic omissions all live in that one canonical file. references/design-aesthetic-quality.md remains only as a compatibility map for older links; do not load both copies.

Summarize the direction as three lines before writing any code:

• Visual thesis: mood, material, and energy in one sentence (e.g. "warm brutalist editorial with high-contrast ink type and rough paper texture")
• Content plan: hero -> support -> detail -> final CTA, one line each. For app/dashboard surfaces: skip the marketing structure, default to utility mode (orient, show status, enable action), no hero unless explicitly requested.
• Interaction thesis: either none with one evidence-based reason, or 2-3 specific motion ideas that change how the page feels (e.g. "hero text slides in on load, section headers pin while content scrolls beneath, CTA pulses on hover")

For production or multi-page UIs, expand the thesis into the 9-section DESIGN.md scaffold in references/design-reference.md (theme, palette, typography, components, layout, depth, do/don't, responsive, prompt guide). For a single component, the three lines are sufficient.

When Asked For Options

Give at least 3 variations across genuinely different dimensions (density, typography, color, layout, motion). See "Options guide" in references/design-reference.md for the full variation framework. Three options differing only by accent color are not three variations.

Offer without being asked when the decision is taste, not correctness: icon, weight, accent, motion feel. Two labeled candidates beat one landed guess, because the reply is a single letter instead of a rewrite round. For a structural change, describe the end state in a sentence or two and get a nod before writing the code.

Hard Rules

Always-on bans for every mode: no thick side-border accents, gradient text, default glass cards, reflex purple-to-blue/cyan-on-dark palettes, generic rounded shadow-card grids, modal escapes for ordinary overflow, transition: all, or layout-property animation. Before handoff, scan the first viewport for default-prompt tells and remove any that were not an explicit part of the product's direction.

Two motion rules apply in every mode, including the ones that skip the full reference. Frequency decides whether something animates at all: nothing keyboard-initiated animates, and anything the user triggers hundreds of times a day reads motion as lag, so it gets none. And every pressable thing moves on press, not only on hover, because hover is pointer-only and an unmoved control leaves the click unacknowledged.

Direction lock loads references/design-reference.md for the full rewrites, typography, OKLCH color, motion timings, layout defaults, accessibility baseline, and complexity matching. Screenshot and quick-fix paths use the compact bans above instead of paying for that full reference. These rules keep output off the generic default, not to run as a lint pass: when the committed direction genuinely calls for breaking one, break it deliberately and name the tradeoff in the handoff. The accessibility baseline and CSS-pattern bans stay non-negotiable.

Gotchas

What happened	Rule
Used Inter as the display font	It communicates nothing. Pick something with a personality.
Three cards, identical shadows, identical padding -- a template	If swapping content doesn't require layout changes, redo it.
Claimed it looked right without opening a browser	Code correct in your head can look broken in the browser. Open it.
Chose glassmorphism, ignored the mobile constraint	backdrop-filter is expensive on low-power devices. Name the tradeoff.
Light-mode app: white panel on white background, visually indistinguishable	Adjacent nested surfaces must differ visually. Either background step (sidebar vs main ≥4% lightness difference) or shadow minimum 0 1px 3px rgba(0,0,0,0.10).
Fixed visual polish by redesigning the whole surface	Locate the concrete visual delta first, then make the smallest material, opacity, geometry, or typography change that addresses it.
Regenerated an image a third time after two "ugly" verdicts	Two rejections on look means the subject is the disagreement, not the palette. Stop generating and re-align on what the image says.
Added a setting or louder control to solve UI noise	Remove the misleading affordance or choose a quiet default first
English looked fine, localized text overflowed	Test long words and localized strings before handoff, especially inside buttons, tabs, nav, and compact cards.
Relied on … truncation to fit text in a fixed-width slot	Guarantee fit instead: compact the format, cap to whole segments, or hard-trim with no glyph. Metric and label footers must never tail-truncate into an ellipsis.
One extra word pushed a line into a wrap; the last line held a single orphan word	Before handoff, sweep every user-visible text block for near-wrap and orphan-line states. Fix by tightening the copy, not by shrinking type; one instance found means sweep the whole document, all instances get fixed.

Output: Aesthetic Review

After significant build phases and at handoff, re-read the visual thesis from direction lock. If what is on screen drifted toward a generic default, identify the specific element that broke first (typeface, color, card treatment, spacing) and fix it before continuing.

Run these checks before the handoff summary:

• Is the brand or product unmistakable in the first screen?
• Is there one strong visual anchor (real imagery, not a decorative gradient)?
• Can the page be understood by scanning headlines only?
• Does each section have one job?
• Are cards actually necessary, or just default styling?
• Does motion improve hierarchy or atmosphere, or is it ornamental?
• Would the design still feel premium if all decorative shadows were removed?
• AI Slop Test: scan the first screen for default patterns (reflex font, purple-to-blue gradient, centered hero with two CTAs side by side, three identical cards, generic top nav). If any appear unintentionally, fix typography, color, or layout until none remain.

If any check fails, fix first. Ask the user to verify at full width and at 375px; if the layout breaks at mobile width, fix before handing off.

End with:

• Aesthetic direction, named and justified in 2-3 sentences
• Non-obvious choices explained: typeface, color decisions, layout logic
• Instructions for replacing placeholder content with real content

After handoff, stop.