---
name: auteur
description: Design and build complete web experiences from scratch — award-level product and marketing pages, cinematic scroll-directed sites where the page is directed like a film, and multi-screen products (app, dashboard, admin, settings, onboarding, docs site) built as one design system with every component, state and route in one style. Use whenever the user wants to create or redesign a landing page, website, hero section, portfolio, promo or product page; wants scroll animations, storytelling pages, or a site that feels like a movie; or says "make it beautiful", "make it wow", "cinematic", or "design system" — even if they name no technique. Generates its own assets via local CLIs (images, video frames, depth maps, 3D), and gates every ship with an executable anti-slop linter and a screenshot verification loop. Not for polishing a UI someone else built, and not for backend-only work.
version: 1.3.1
user-invocable: true
argument-hint: "[build|direct|system|edit|audit|recon] <brief or target>"
allowed-tools:
  - Bash(node scripts/*)
  - Bash(npx playwright *)
  - Bash(agy *)
  - Bash(codex *)
  - Bash(grok *)
  - Bash(ffmpeg *)
---

Auteur designs and builds web experiences the way a film director makes a film: script first, then assets, then the shoot, then the cut. It has three registers — **build** (an excellent conventional site), **direct** (a cinematic scroll-directed site) and **system** (a multi-screen product as one design system) — on one shared core of taste. Nothing ships until the page passes an executable anti-slop gate and the skill has looked at its own output.

### Use this when

- A landing page, marketing site, hero section, portfolio or product page has to be **built or redesigned** — and looking generic is not acceptable.
- The brief asks for **scroll animation, storytelling, or a site that feels like a film**.
- A product spans **several screens that must feel like one thing** — app, dashboard, admin, onboarding, docs.
- Someone says *make it beautiful*, *make it wow*, *cinematic*, or *design system*, naming no technique.

Not for polishing a UI someone else built, and not for backend-only work.

### What it actually does

1. Commits the art direction **in writing before any markup** — one hue, one type system, a motion budget, named anti-references.
2. Generates or sources the assets: local image/video CLIs, Blender, depth maps, CC0 meshes and HDRIs with their licences recorded.
3. Builds from proven recipes — one WebGL context, transform/opacity motion, scroll state machines.
4. **Gates the result**: `slopscan` fails the build on concrete slop, `motionqa` fails it on dropped frames, `systemscan` fails it on cross-route drift.

### Network access

The recon and sourcing scripts read live pages (awwwards, Bing/Pinterest/are.na image search, Poly Haven, Iconify, Google Fonts, Openverse, Coverr). Fetched content is **treated as reference data and licence metadata — never executed**, and no credentials, API keys or logins are involved. Skip phases 0–1 entirely if you don't want outbound requests; every other phase works offline.

## Non-negotiables

These apply to every register, every phase, always — even if no reference file has been loaded. Match-and-refuse: if you are about to produce one of these, stop and restructure the element.

### Banned (rewrite, don't tweak)

| # | Ban | Instead |
|---|-----|---------|
| 1 | `border-left`/`border-right` >1px as a colored accent on cards, callouts, alerts | full border, background tint, leading icon, or nothing |
| 2 | Gradient text (`background-clip: text` + gradient) | one solid color; emphasis via weight or size |
| 3 | Glassmorphism as default (decorative `backdrop-filter` cards) | rare and purposeful, or solid surfaces |
| 4 | The hero-metric template (big number, small label, stat row, gradient accent) | evidence in prose, one committed visual |
| 5 | Identical card grids (same-size icon+heading+text, repeated) | vary size, structure, or drop the cards entirely |
| 6 | Eyebrow kickers (tiny uppercase tracked label) above every section | one deliberate kicker max as a brand system; vary section openings |
| 7 | Numbered section scaffolding (01 / 02 / 03) when order carries no meaning | numbers only for a real sequence |
| 8 | `Inter` or `Space Grotesk` as the *first* font choice | pick from a contrast-axis pair (see taste.md); these two are the AI default of 2024–2026 |
| 9 | Purple→blue gradients (both stops hue 250–290) | committed brand hue, or no gradient |
| 10 | Cream/warm-beige body background as a "warmth" reflex (OKLCH L 0.84–0.97, C <0.06, hue 40–100) | saturated brand surface, true off-white at chroma ~0, or a darker tinted mid-tone; warmth lives in accent + type + imagery |
| 11 | The same fade-in/slide-up entrance on every section | each reveal fits what it reveals; vary easing, distance, direction |
| 12 | `transition: all` | list the animated properties |
| 13 | `window.addEventListener('scroll', ...)` | IntersectionObserver, GSAP ScrollTrigger, or CSS `animation-timeline` |
| 14 | `scale(0)` entrances | start at `scale(0.95)` + opacity |
| 15 | Bento grids of near-identical or empty cells; white-card-on-white bento | bento only with real visual variation per cell, else a different layout |
| 16 | Copy tells: "Revolutionize", "Seamless", "Effortless", "Unleash", "Elevate", em-dash–heavy sentences, decoration strips like "BRAND. MOTION. SPATIAL." | concrete claims in plain words |
| 17 | More than one marquee per page | one, or none |
| 18 | Instrument Serif / Playfair Display as the reflex "elegant serif" | serifs chosen for the brand, not from the AI shortlist |

A ban may be overridden only through a written `auteur-allow` (see Verification) with a real reason — a deliberate, argued choice is voice; a default is slop.

### Critical numbers (memorize; full context in reference files)

- Body text contrast ≥ 4.5:1 (large text ≥ 3:1). Placeholders too. Muted-gray-on-tinted-white is the #1 AI readability failure.
- Body line length 65–75ch. Display heading ceiling: clamp max ≤ 6rem *for headings in prose flow* — a wordmark or a deliberately type-led hero is exempt and the commit-sheet must say so. Display letter-spacing ≥ −0.04em.
- Durations: button 100–160ms · tooltip 125–200ms · dropdown 150–250ms · modal/drawer 200–500ms · any UI >300ms needs a written reason.
- Enter/exit easing = ease-out. `ease-in` is banned on UI.
- Animate only `transform` and `opacity`. Stagger 30–80ms.
- Motion budget: ≤ 3 scroll-triggered pattern families per page; **one** primary wow peak, supporting scenes at lower intensity.
- Scrub smoothing 0.3–0.8. Hero video ≤ 2MB. LCP < 2.5s. CLS < 0.1.
- Fullscreen passes (bloom, grain, DoF, any full-frame shader) are priced **per pixel, not per object** — they, not geometry, are what blows the frame budget. A perf number counts only when measured at **DPR 2 on a production build**: DPR 1 quarters the cost of every such pass, and a dev server roughly doubles the frame.
- `prefers-reduced-motion` = an alternative art direction (gentler, not zero), never an afterthought.
- Content must be readable with JS disabled: reveals enhance an already-visible default, never gate visibility.

## Routing

Read the argument / brief and route:

1. **`direct`** or the brief smells cinematic — "wow", "cinematic", "immersive", "storytelling", "launch page", "premium brand", "make people stop scrolling" → load `reference/direct.md` and follow its phases. This is the flagship register.
2. **`build`** or the brief is ONE conventional surface — a marketing page, a landing, a single product page → load `reference/build.md`.
3. **`system`** or the brief has **more than one screen that must feel like one product** — app, dashboard, admin, settings, onboarding, a docs or content site with real navigation → load `reference/system.md`. The unit of design becomes the component × state, the failure mode becomes drift rather than boredom, and there is deliberately **no peak**. If you are already in `build` and a second screen appears, stop and switch: half a system is worse than either.
4. **`edit`** or the request modifies a page this skill built (the project contains `design/DESIGN.md`) — "add a section", "change the pricing", "swap the hero copy" → read `design/DESIGN.md` FIRST and follow its Editing protocol: reuse its tokens, section-opening patterns, and motion families; after the change run slopscan and re-shoot the affected viewports. An edit that ignores DESIGN.md is a regression even if it looks good in isolation.
5. **`recon <brief>`** or the ask is only for reference material — "найди референсы", "собери мудборд", "what's the state of the art for X sites" → load `reference/recon.md` and run just that phase: scout live sites, build the moodboard, hand back `design/refs/REFERENCES.md` (with the `steal:` lines filled) and `design/moodboard/contact-sheet.png` (with the read filled). No commit-sheet, no build.
6. **`audit <path-or-url>`** → load `reference/verify.md` and run the verification pipeline on an auteur-built page. If the target is an existing UI auteur didn't build and the user wants it *polished* rather than *rebuilt*, say that `/impeccable` is the right tool and offer to continue only if they want a rebuild.
7. **Ambiguous** (e.g. plain "сделай лендинг") → ask exactly one question: "Обычный отличный лендинг или кино-режим со scroll-режиссурой и генерацией ассетов?" Then route. (Multi-screen briefs are not ambiguous — they are `system`.) Don't ask anything else yet — each register runs its own intake.

All three registers share phase zero, and its centre of gravity is the commit-sheet. Order differs: **build** runs recon → commit-sheet → mockup; **direct** runs recon → storyboard → commit-sheet → mockup, because the film's scenes are what the six decisions get made *about*; **system** runs recon → system-sheet (route map + component inventory) → commit-sheet → mockup, because the six decisions get made about a product, not a page. Either way nothing is coded before the sheet is full.

## The commit-sheet (before any code, both registers)

Slop is what happens when defaults make the decisions. The commit-sheet forces seven real decisions onto paper before the first line of code. Copy `templates/COMMIT-SHEET.md` into the project (e.g. `design/COMMIT-SHEET.md`) and fill all seven fields with non-defaults:

1. **Peak** — the ONE primary wow moment (direct) or signature element (build). One sentence. If you can't name it, you're not ready to build.
2. **Color** — primary as OKLCH + commitment tier (restrained / committed / full-palette / drenched) + one line: *why this is not lavender, not cream, and not the category reflex* + **the background lightness as a number** (target mean L), because "dark feels premium" is where this skill drifts, and a number can be checked afterwards where a mood cannot.
3. **Type** — display + text pairing on a contrast axis (serif+sans, geometric+humanist, mono+serif...) + one line: *why not Inter*.
4. **Grid break** — the one concrete thing that breaks the symmetric-grid default: an overlap, an asymmetric split, a diagonal flow, a full-bleed interruption. Name it specifically.
5. **Motion budget** — how many scroll-pattern families (≤3) and what they are.
6. **Reflex check** — write down: (a) what a generic AI would do for this category (first-order reflex), (b) what a generic AI avoiding (a) would do (second-order reflex — e.g. fintech → "terminal dark mode" is *also* saturated now), (c) your chosen deviation from both. If recon ran, (a) is not a guess: whatever `design/refs/REFERENCES.md` showed five times *is* the reflex, dated and with receipts.
7. **House tells broken** — name the **two (minimum)** items from `taste.md` §2.5 you are deliberately not doing this time, and what replaces each. Fields 6a/6b are the reflexes of the *category*; these are the reflexes of *this skill*, which recur across unrelated projects and are invisible from inside any one of them: near-black backgrounds, mono service labels, the logo/status/action header, the scroll-instruction footer, amber-or-acid accents, the wordmark-as-hero, glow standing in for lighting. Measured across nine showcase builds, eight were dark and three landed within 0.002 of the same lightness. A tell that genuinely belongs here can stay — say why, as with an `auteur-allow`.

Gate: every field filled with a specific, non-default answer. An empty or generic field ("modern, clean look") means stop and decide. This artifact is checked again at verification.

## Phases at a glance

| Phase | build register | direct register | system register | Reference to load |
|---|---|---|---|---|
| 0 | recon → commit-sheet → hero mockup gate | recon → screenplay (STORYBOARD.md) → commit-sheet → hero mockup gate | recon → SYSTEM-SHEET.md (routes + component inventory + states) → commit-sheet → mockup gate | `recon.md`, then `build.md` / `direct.md` / `system.md` |
| 1 | — | asset production (generate → edit → optimize) | — (source icons/fonts via `source.mjs`) | `assets.md` |
| 2 | build the page | assemble the film (smooth scroll first, hero, scenes top-down) | tokens → the shell → screens in traffic order → every state | `build.md` / `scroll-cinema.md` / `system.md` + `taste.md` + `motion.md` |
| 3 | verify | verify + CINEMA-QA.md | verify + **systemscan across every route** | `verify.md` |
| 4 | lock the style: fill `design/DESIGN.md` | same | same, but DESIGN.md is the **component contract** | `templates/DESIGN.md` |

The hero mockup gate (one static throwaway screen, screenshotted and approved before anything else is built) is the cheapest moment to change art direction — details in each register's reference. `design/DESIGN.md` is the style contract that makes every later edit stay in style (the `edit` route reads it first).

Never skip a gate because the intermediate result "looks done". The gates exist because a page that merely looks done is exactly what every other AI ships.

## Reference files

- `reference/recon.md` — **phase 0 scouting**, two executable legs: `scripts/refscout.mjs` profiles live award-level sites (real stack, pinned scenes, scroll budget, fonts, painted palette, screenshots — mechanics, not skins) and `scripts/moodboard.mjs` builds a numbered contact sheet from Bing / Pinterest / are.na so the art direction is decided from live material instead of memory. Also: query craft, the steal rule, how recon feeds the commit-sheet, and the "reference images are not assets" line. Load at the top of phase 0.
- `reference/taste.md` — the full anti-slop system: extended bans with replacements, second-order category reflex table, color strategy tiers, typography pairing, copy rules. Load for any visual decision-making.
- `reference/motion.md` — the motion school: when to animate, easing/duration/spring numbers, performance rules, motion budget, sound policy. Load before writing any animation.
- `reference/build.md` — the standard register process. Load when routed to build.
- `reference/system.md` — the **multi-screen register**: route map, the component inventory as a gate, the state matrix (empty/loading/error are not edge cases), density rules, the no-peak rule, and `scripts/systemscan.mjs` — which crawls every route, reads what the browser actually painted, fails a control type over its declared variant budget — counting *states* (disabled, current, inside a `data-state` row) separately, so implementing the state matrix never reads as drift — presses Tab to catch controls with no visible focus state, and renders one tile per rendered variant so drift is visible as well as counted. Load when routed to system.
- `reference/direct.md` — the cinematic register: screenplay contract, scene-sheets, dramaturgy, assembly order. Load when routed to direct.
- `reference/assets.md` — the media crew and routing (agy / codex / grok-4.5 for images, grok for video, MiniMax for score, ffmpeg), **§0.5 source-vs-generate** (`scripts/source.mjs`: CC0 glTF meshes, HDRIs and PBR materials from Poly Haven, icons, fonts, CC images, stock video — with a licence ledger, because generation cannot make geometry or an IBL and stock video must never be the peak), the consistency trick (edit frame A into frame B), local video via the first→last-frame chain, generated elements/mockups, the ambient score, the degradation ladder, and asset caching. Load during direct phase 1.
- `reference/scroll-cinema.md` — working code recipes: scroll-scrubbed video, canvas sequences, GSAP+Lenis foundation, CSS scroll-driven animations, text reveals, the two-keyframe WebGL displacement transition, view transitions, ambient audio, and the cinematic transition library (wipe, curtain, letterbox, shutter, depth parallax). Load during assembly.
- `reference/scroll-flight.md` — the **video-scrub tier**: a photoreal "fly through the world" hero driven by scroll, using the drop-in `templates/scroll-flight-engine.js`. The canonical recipe for scroll-scrubbed *video* (encode-for-scrubbing `-g 8`, encoded-frame posters, SSIM seam gate, chain architecture A/B, iOS/mobile decode hardening, crossfade-vs-seamless seams). Load when the hero should be photoreal footage/AI-video rather than real-time WebGL.
- `reference/ambient-backgrounds.md` — **quiet** texture for secondary sections and simpler builds (not a hero): a curated 6 editorial/analog effects (paper grain, ledger/blueprint rules, topographic contour, ink tide, sparse dust, one heat-haze shader) + a zero-motion static-mesh default. The governing rule (weaker than the quietest foreground element; one ambient per page), the CSS/SVG-first stack, and the `feTurbulence`-static perf rule. Load when a section needs to not be flat but must NOT compete with copy.
- `reference/verify.md` — the acceptance pipeline: slopscan → screenshot journey → motion/perf/audio QA (FPS at DPR 2 on a production build, long-tasks, audio-gate, reduced-motion, for Tier-1 scenes) → numeric rubric → **reference diff** (your frame beside the reference that set the direction, with `scripts/chromadiff.mjs` measuring the colour drift a model never sees in itself) → QA sign-off. Load at phase 3.

## Verification is part of the build

The page is not done when the code compiles. It is done when:

1. `node scripts/slopscan.mjs <src-dir>` exits 0 (fails are fixed, not suppressed — `/* auteur-allow: RULE_ID -- reason */` exists for deliberate choices and demands a real reason);
2. `node scripts/shoot.mjs <url>` has produced screenshot journeys at 390 / 768 / 1440 and you have **looked at every frame** — text overflow, blank scenes, broken reveals, layout collapse are found by eyes, not by grep;
3. the numeric rubric in `reference/verify.md` passes (contrast, LCP, CLS, reduced-motion journey, scene variety);
4. for direct register: `CINEMA-QA.md` (from templates) is filled with PASS on every row.

If any gate fails — fix and re-run. Report results honestly: "slopscan clean, 21 screenshots reviewed, LCP 1.9s" beats "looks great".

## Working relationship with other skills

Auteur *builds*; it does not re-polish foreign UI. If the user has an existing interface that needs refinement, recommend `/impeccable`. If auteur's own output needs an outside critique, `/impeccable critique` on the built page is a compatible second opinion — auteur's verify gate and impeccable's critique measure different things and coexist happily.

## Weak-model note

If you are a smaller model executing this skill: follow the tables and numbers literally, fill every template field, run every gate command, and do not improvise beyond the reference recipes — the recipes are verified, your improvisation is not. When a reference file conflicts with your instinct, the reference file wins. Write files using paths relative to the project root; never retype an absolute path from memory (the skill's name "auteur" is one typo away from "author", and misspelled absolute paths scatter your output across the filesystem).