impeccable

Designs and iterates production-grade frontend interfaces. Real working code, committed design choices, exceptional craft.

Setup

You MUST do these steps before proceeding:

1. Run node .agents/skills/impeccable/scripts/context.mjs once per session. If you've already seen its output in this conversation, do not re-run it. The script either prints the project's PRODUCT.md (and DESIGN.md when present) as a markdown block, or tells you it's missing. Follow whatever it prints. If it reports NO_PRODUCT_MD, stop and follow reference/init.md before doing anything else. If the output ends with an UPDATE_AVAILABLE directive, follow it (ask the user once about updating, then continue). It never blocks the current task.
2. If the user invoked a sub-command (craft, shape, audit, polish, ...), you MUST read reference/<command>.md next. Non-optional. The reference defines the command's flow; without it you will skip steps the user expects.
3. Familiarize yourself with any existing design system, conventions, and components in the code. Read at least one project file (CSS / tokens / theme / a representative component or page). Required even when you've loaded a sub-command reference in step 2. Don't reinvent the wheel; use what's there when it works, branch out when the UX wins.
4. Read the matching register reference. This is non-optional; skipping it produces generic output. If the project is marketing, a landing page, a campaign, long-form content, or a portfolio (design IS the product), read reference/brand.md. If it is app UI, admin, a dashboard, or a tool (design SERVES the product), read reference/product.md. Pick by first match: (1) task cue ("landing page" vs "dashboard"); (2) surface in focus (the page, file, or route being worked on); (3) register field in PRODUCT.md.
5. If the project is brand-new (no existing CSS tokens / theme / committed brand colors found in step 3), run node .agents/skills/impeccable/scripts/palette.mjs to receive a brand seed color and composition guidance. This is the anchor for your primary brand color. Compose the rest of the palette (bg, surface, ink, accent, muted) around it per the script's instructions. Use OKLCH throughout. Skip this step only if step 3 found committed brand colors in existing tokens; in that case identity-preservation wins.

Design guidance

Produce ready-to-ship, production-grade code, not prototypes or starting points. Take no shortcuts unless the user asks for them (when in doubt, ask). Don't stop until arriving at a complete implementation (beautiful, responsive, fast, precise, bug-free, on brand). You take attention to detail seriously: every page, section or component crafted is battle tested using the tools available to you (browser screenshotting, computer use, etc). GPT is capable of extraordinary work. Don't hold back.

General rules

Color

• Verify contrast. Body text must hit ≥4.5:1 against its background; large text (≥18px or bold ≥14px) needs ≥3:1. Placeholder text needs the same 4.5:1, not the muted-gray default. The most common failure: muted gray body text on a tinted near-white. If the contrast is even close, bump the body color toward the ink end of the ramp; light gray "for elegance" is the single biggest reason AI designs feel hard to read.
• Gray text on a colored background looks washed out. Use a darker shade of the background's own hue, or a transparency of the text color.

Typography

• Cap body line length at 65–75ch.
• Hierarchy through scale + weight contrast (≥1.25 ratio between steps). Avoid flat scales.
• Cap font-family count at 3 (display + body + optional mono). More than 3 reads as indecision, not richness. One well-tuned family with weight contrast usually beats three competing typefaces.
• Don't pair fonts that are similar but not identical (two geometric sans-serifs, two humanist sans-serifs). Pair on a contrast axis (serif + sans, geometric + humanist) or use one family in multiple weights.
• No all-caps body copy. Reserve uppercase for short labels (≤4 words), section eyebrows (used sparingly per the Absolute bans), and badges. Sentences in ALL CAPS are unreadable at body sizes.
• Hero / display heading ceiling: clamp() max ≤ 6rem (~96px). Above that the page is shouting, not designing.
• Display heading letter-spacing floor: ≥ -0.04em. Anything tighter and letters touch; cramped, not "designed".
• Use text-wrap: balance on h1–h3 for even line lengths; text-wrap: pretty on long prose to reduce orphans.

Two hard typographic ceilings you currently miss:

• Hero clamp() max ≤ 6rem. 8–11rem (128–176px) reads as comically loud, not bold.
• Display letter-spacing ≥ -0.04em. Your default of -0.05 to -0.085em on display H1s makes the letters touch and reads as cramped. -0.02 to -0.03em is plenty for tight grotesque display; -0.04em is the floor.

Layout

• Vary spacing for rhythm.
• Cards are the lazy answer. Use them only when they're truly the best affordance. Nested cards are always wrong.
• Flexbox for 1D, Grid for 2D. Don't default to Grid when flex-wrap would be simpler.
• For responsive grids without breakpoints: repeat(auto-fit, minmax(280px, 1fr)).
• Build a semantic z-index scale (dropdown → sticky → modal-backdrop → modal → toast → tooltip). Never arbitrary values like 999 or 9999.

Motion

• Motion should be intentional, and not be an afterthought. consider it as part of the build.
• Don't animate CSS layout properties unless truly needed.
• Ease out with exponential curves (ease-out-quart / quint / expo). No bounce, no elastic.
• Use libraries for more advanced motion needs (e.g. motion, gsap, anime.js, lenis etc)
• Reduced motion is not optional. Every animation needs a @media (prefers-reduced-motion: reduce) alternative: typically a crossfade or instant transition.
• Staggering the items within one list is legitimate. The tell is the uniform reflex (one identical entrance applied to every section), not motion itself; each reveal should fit what it reveals. Suppressing the reflex is never a reason to ship a page with no motion at all.
• Reveal animations must enhance an already-visible default. Don't gate content visibility on a class-triggered transition; transitions pause on hidden tabs and headless renderers, so the reveal never fires and the section ships blank.
• Premium motion materials are not just transform/opacity. Blur, backdrop-filter, clip-path, mask, and shadow/glow are part of the palette when they materially improve the effect and stay smooth.

Interaction

• Dropdowns rendered with position: absolute inside an overflow: hidden or overflow: auto container will be clipped. Use the native <dialog> / popover API, position: fixed, or a portal to escape the stacking context.

Copy

• Every word earns its place. No restated headings, no intros that repeat the title.
• No em dashes. Use commas, colons, semicolons, periods, or parentheses. Also not --.
• No aphoristic-cadence body copy as a default voice. Don't fall into the rhythm of "serious statement, then punchy short negation" as the page's recurring voice. If three or more section copy blocks on the page land on a short rebuttal-shaped sentence, rewrite. Specific, not aphoristic.
• No marketing buzzwords. The streamline / empower / supercharge / leverage / unleash / transform / seamless / world-class / enterprise-grade / next-generation / cutting-edge / game-changer / mission-critical family of phrases. Pick a specific noun and a verb that describes what the product literally does.
• Button labels: verb + object. "Save changes" beats "OK"; "Delete project" beats "Yes". The label should say what will happen.
• Link text needs standalone meaning. "View pricing plans" beats "Click here"; screen readers announce links out of context.

New projects only (when no prior work exists)

Color & Theme

• Use OKLCH.
• The cream / sand / beige body bg is the saturated AI default of 2026. The whole warm-neutral band (OKLCH L 0.84-0.97, C < 0.06, hue 40-100) reads as cream/sand/paper/parchment regardless of what you call it. Token names like --paper, --cream, --sand, --bone, --flour, --linen, --parchment, --wheat, --biscuit, --ivory are tells in themselves. If the brief is "warm, traditional, family-coastal-Italian" or "magazine-warm" or " editorial-restraint", DO NOT translate that into a near-white warm-tinted bg; that's the AI move. Pick: (a) a saturated brand color as the body (terracotta, oxblood, deep ochre, near-black), (b) a true off-white at chroma 0 (or chroma toward the brand's own hue, not toward warmth-by-default), or (c) a darker mid-tone tinted neutral that's clearly the brand's own. "Warmth" in the brand is carried by accent + typography + imagery, not by body bg.
• Tinted neutrals: add 0.005–0.015 chroma toward the brand's hue. Don't default-tint toward warm or cool "because the brand feels that way"; that's the cross-project monoculture move.
• When picking a theme: Dark vs. light is never a default. Not dark "because tools look cool dark." Not light "to be safe.".Before choosing, write one sentence of physical scene: who uses this, where, under what ambient light, in what mood. If the sentence doesn't force the answer, it's not concrete enough. Add detail until it does.
• Pick a color strategy before picking colors. Four steps on the commitment axis:
  • Restrained: tinted neutrals + one accent ≤10%. Product default; brand minimalism.
  • Committed: one saturated color carries 30–60% of the surface. Brand default for identity-driven pages.
  • Full palette: 3–4 named roles, each used deliberately. Brand campaigns; product data viz.
  • Drenched: the surface IS the color. Brand heroes, campaign pages.

Absolute bans

Match-and-refuse. If you're about to w

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