Preview the prompt +
# Build brief — an original marketing website in the taste of Arc
> Reference: https://arc.net · UIDiscovery: https://uidiscovery.com/sites/arc · captured 2026-09-21 at a 1440px desktop viewport (+ 390px iPhone shots) · [full page](https://uidiscovery.com/media/captures/arc/full.webp) · [scroll video](https://uidiscovery.com/media/captures/arc/preview.mp4)
## 1. Goal
Build an original marketing website for **[the user's brand]** that feels as considered as Arc — same structure, rhythm and polish, entirely new identity and content.
## 2. Originality rules
- Build an ORIGINAL design for the user's own brand in the same *taste* as Arc: structure, rhythm, hierarchy, palette mood and type pairing.
- Never reuse Arc's logo, name, product imagery, illustrations, icons, screenshots or copy. Write new copy for the user's product.
- If the user hasn't said what their product is, ask first (or use clearly marked placeholders like [Brand], [Product], [Audience]).
- Reference screenshots are for looking at, not for embedding or tracing.
## 3. The taste, in short
- Arc (arc.net): Technology marketing website, light.
- 7 sections: Hero → Statement → Content → Footer.
- Spacing: about a screen per idea (median section ≈920px).
- Type: one family (Marlin Soft SQ). Imagery: mostly illustration, some abstract 3D / gradient art.
## 4. Page structure (top to bottom)
### 1. Hero — state what the product is and for whom in one glance, and offer the primary action.
- Layout: headline-led stack: eyebrow → H1 → supporting line → actions, with a visual beside or below. Half to one screen (617px at 1440), page background; 4 images/icons (a set of cards or a small gallery); 1 text link instead of buttons.
- Slots: Eyebrow / announcement pill (optional); H1; Supporting line, 1–2 sentences; Text link action; Hero visual (see image plan).
- [Screenshot](https://uidiscovery.com/media/captures/arc/s-01.webp) · imagery: slot 1
### 2. Statement — a large-type moment that sets tone and pace.
- Layout: oversized typography with lots of space. About one full screen (920px at 1440), own dark band #3139fb; 7 images/icons (a set of cards or a small gallery); 4 buttons (tabs, toggles or per-card actions).
- Slots: Heading (~9 words, like the reference); Body copy; Supporting visual (see image plan); Primary + secondary action.
- Topic (tone/length only — never reuse): “Arc is the Chrome replacement I've been waiting for.”
- [Screenshot](https://uidiscovery.com/media/captures/arc/s-02.webp) · imagery: slot 2
### 3. Content — supporting content that deepens one idea.
- Layout: text + media block. About one full screen (1080px at 1440), own light band #ffffff; 1 image/graphic; no interactive controls.
- Slots: Heading; Body copy; Supporting visual (see image plan).
- [Screenshot](https://uidiscovery.com/media/captures/arc/s-03.webp) · imagery: slot 3
### 4. Content — supporting content that deepens one idea.
- Layout: text + media block. About one full screen (1041px at 1440), own light band #ffffff; 1 image/graphic; no interactive controls.
- Slots: Heading; Body copy; Supporting visual (see image plan).
- [Screenshot](https://uidiscovery.com/media/captures/arc/s-04.webp) · imagery: slot 1
### 5. Content — supporting content that deepens one idea.
- Layout: text + media block. About one full screen (1041px at 1440), own light band #ffffff; 1 image/graphic; no interactive controls.
- Slots: Heading; Body copy; Supporting visual (see image plan).
- [Screenshot](https://uidiscovery.com/media/captures/arc/s-05.webp) · imagery: slot 1
### 6. Content — supporting content that deepens one idea.
- Layout: text + media block. Compact band (373px at 1440), page background; 1 image/graphic; no interactive controls.
- Slots: Heading; Body copy; Supporting visual (see image plan).
- [Screenshot](https://uidiscovery.com/media/captures/arc/s-06.webp)
### 7. Footer — navigation, legal and contact — the page's index.
- Layout: multi-column link groups, brand line, legal row. Half to one screen (502px at 1440), own dark band #3139fb; 7 images/icons (a set of cards or a small gallery); primary + secondary button, 20 links (link lists / navigation).
- Slots: Brand mark + one-line description; 3–5 link columns; Newsletter or contact (optional); Legal row + social icons.
- [Screenshot](https://uidiscovery.com/media/captures/arc/s-07.webp)
Inner pages also captured (About, Blog, Docs, Security): https://uidiscovery.com/sites/arc?view=pages
## 5. Design system
### Colour
| Role | Hex | Use | Contrast on background |
|---|---|---|---|
| background | `#fffcec` | page background | — |
| foreground | `#000000` | body text, headings | 20.4:1 |
| accent | `#2702c2` | primary buttons, links, highlights — sparingly | 10.9:1 |
| surface | `#ffffff` | cards, inputs, alternate bands | text on it 21.0:1 |
| muted | `#3139fb` | secondary text, borders | 6.6:1 |
Captured palette: `#fffcec` `#3139fb` `#ffffff` `#000000` `#2702c2`. Section bands top→bottom: `#fffcec` → `#3139fb` → `#ffffff`. Roles are assigned automatically — sanity-check them against the screenshot. Keep the palette's *mood* (light, cool) and proportions; swap the accent for the user's brand colour.
### Tokens
```css
:root {
--background: #fffcec;
--foreground: #000000;
--accent: #2702c2;
--surface: #ffffff;
--muted: #3139fb;
--font-heading: "Inter", ui-sans-serif, system-ui, sans-serif;
--font-body: "Inter", ui-sans-serif, system-ui, sans-serif;
--radius: 12px; /* calibrate from the screenshot */
}
/* Tailwind v4 — in globals.css after @import "tailwindcss"; */
@theme {
--color-background: var(--background);
--color-foreground: var(--foreground);
--color-accent: var(--accent);
--color-surface: var(--surface);
--color-muted: var(--muted);
--font-heading: var(--font-heading);
--font-sans: var(--font-body);
}
```
### Typography
- Headings: **Inter** (Google Fonts) — reference uses Marlin Soft SQ. “Marlin Soft SQ” is likely a custom or licensed face. Inter is a neutral stand-in — pick a closer free match by eye from the screenshot.
- Body: same family — a single-family system; create contrast with size and weight, not a second face.
- Scale (starting point, sizes weren't measured — calibrate against the 1440px screenshot): display clamp(2.5rem, 5vw, 4.25rem), h2 clamp(1.75rem, 3vw, 2.5rem), h3 1.25rem, body 1rem–1.125rem / 1.6, small 0.875rem. Headings: tight tracking (-0.02em), line-height 1.05–1.15.
### Spacing & rhythm
Sections run ≈920px tall at 1440 (median; range 373–1080px, captures cap at 1700px) — roughly a screen per idea. Start with 96–120px vertical padding per section on desktop and about two-thirds of that on mobile. The background changes 4 times down the page — use band changes to mark chapters. 8px spacing grid, 1200–1280px max content width, 24px (mobile) / 32–48px (desktop) gutters.
### Shape, depth & theme
Radii and shadows weren't measured. Read exact corner radius, border and shadow treatment from the screenshots. Light-first; for a dark mode use a near-black (not #000) background, ~90% white text, lift surfaces with lightness not shadow, re-check the accent.
## 6. Imagery plan
Best guess: mostly **illustration**, some abstract 3D / gradient art (light, cool, Technology). Inferred from element counts, colours and industry — not from the pixels — so open the linked screenshots and match the real style before sourcing anything.
### Slot 1 · 1. Hero, 4. Content, 5. Content → illustration (uncertain)
- Light Technology section with a few graphics — illustration, icon art or a product shot. Count: one consistent treatment across these sections. Aspect: 3:2. Look first: [ref 1](https://uidiscovery.com/media/captures/arc/s-01.webp) [ref 2](https://uidiscovery.com/media/captures/arc/s-04.webp) [ref 3](https://uidiscovery.com/media/captures/arc/s-05.webp)
- **Stock** — “technology flat illustration”: [Unsplash](https://unsplash.com/s/photos/technology-flat-illustration?orientation=landscape) · [Pexels](https://www.pexels.com/search/technology%20flat%20illustration/?orientation=landscape) · [Pixabay](https://pixabay.com/images/search/technology%20flat%20illustration/?orientation=horizontal)
- **Generate** — `Flat vector illustration: abstract gradient mesh, friendly simplified shapes, limited palette of #fffcec, #2702c2, #ffffff plus one soft neutral, plenty of empty background, consistent line weight, cool mood. Aspect ratio 3:2. No text, no letters, no logos, no watermarks, no brand marks or trademarked products, no recognisable real people.`
- Uncertain: this could equally be photography, a product shot or icon art — open the reference screenshots and match what you see.
### Slot 2 · 2. Statement → abstract 3D / gradient (uncertain)
- Dark Technology section with a few graphics — typically abstract 3D/gradient art or a product shot. Count: a set of ~7 in one consistent style. Aspect: 4:5. Look first: [ref 1](https://uidiscovery.com/media/captures/arc/s-02.webp)
- **Stock** — “abstract gradient 3d”: [Unsplash](https://unsplash.com/s/photos/abstract-gradient-3d?orientation=portrait) · [Pexels](https://www.pexels.com/search/abstract%20gradient%203d/?orientation=portrait) · [Pixabay](https://pixabay.com/images/search/abstract%20gradient%203d/?orientation=vertical)
- **Generate** — `Abstract 3D render: soft, matte clay shapes and a smooth gradient in #2702c2 and #3139fb on a #fffcec background. Lighting: soft natural daylight, airy and high-key; cool tone. Minimal and calm, generous negative space on one side for text. Aspect ratio 4:5. No text, no letters, no logos, no watermarks, no brand marks or trademarked products, no recognisable real people.`
### Slot 3 · 3. Content → photography
- Photography, seen in the capture (land, grass). (measured from the screenshot) Count: 1. Aspect: 4:5. Look first: [ref 1](https://uidiscovery.com/media/captures/arc/s-03.webp)
- **Stock** — “minimal desk with laptop”: [Unsplash](https://unsplash.com/s/photos/minimal-desk-with-laptop?orientation=portrait) · [Pexels](https://www.pexels.com/search/minimal%20desk%20with%20laptop/?orientation=portrait) · [Pixabay](https://pixabay.com/images/search/minimal%20desk%20with%20laptop/?orientation=vertical)
- **Generate** — `Photograph: minimal desk with laptop. Composition: simple composition with one focal point. Lighting: soft natural daylight, airy and high-key. Cool colour grade that sits on #ffffff, #2702c2. Photorealistic, natural textures, shallow depth of field, 35mm lens. Aspect ratio 4:5. No text, no letters, no logos, no watermarks, no brand marks or trademarked products, no recognisable real people.`
- **No imagery (type-led)** — 6. Content: No imagery needed — type, spacing and colour do the work. If the screenshot shows a background graphic, rebuild it in CSS (gradient, grid, noise) or a short muted video, not a stock photo.
- **Icons** — 7. Footer: Use one open-source icon set at one stroke weight — Lucide, Phosphor or Heroicons (MIT) — tinted with the text or accent token. Social icons: Simple Icons.
- **Licences:** Unsplash and Pexels images are free for commercial use under their own licences; Pixabay under the Pixabay Content License. Check each image's page before use, credit the photographer when asked (good practice anyway), and skip images showing logos, trademarks, branded products or identifiable people without a release.
- **AI generation:** the prompts work with any image model (GPT Image, Imagen, Flux, Midjourney, Firefly, SDXL…) — check its commercial-use terms. Never put the reference brand's name or “in the style of <brand>” in a prompt.
- **Never** download, trace or re-host the reference's own images, illustrations, product shots or logos.
## 7. Build steps
1. Confirm brand, product, audience and the primary action with the user.
2. Set up the tokens (CSS variables / Tailwind @theme) and load the fonts.
3. Build the sections in order, mobile-first, with each reference screenshot open.
4. Write original copy for every slot — match length and tone, never the words.
5. Source every image via the imagery plan (stock or generated); compress it and record credits.
6. Run the checklist at 390 / 768 / 1440px and fix what fails.
## 8. Acceptance checklist
- [ ] Responsive at 390px, 768px and 1440px — no horizontal scroll, tap targets ≥ 44px on mobile.
- [ ] Colour contrast WCAG AA: 4.5:1 body text, 3:1 large text and UI; visible focus states; full keyboard navigation.
- [ ] Semantic HTML: one <h1>, ordered headings, landmarks (header/nav/main/footer), labelled form fields, alt text on meaningful images.
- [ ] Performance: modern image formats with width/height set, lazy-load below the fold, ≤ 2 font families with font-display: swap, LCP < 2.5s.
- [ ] prefers-reduced-motion respected; animations under ~300ms and never blocking content.
- [ ] Originality: no copied logos, images, illustrations or copy from the reference; every image licensed or generated; credits recorded.
## 9. If you use Next.js + Tailwind
Paste the @theme block into globals.css, load fonts with next/font/google, make each section a server component in components/sections/, use next/image with explicit sizes, and keep client components for interactive bits only (menus, toggles, accordions).
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More: tokens https://uidiscovery.com/api/v1/sites/arc/tokens · kit https://uidiscovery.com/api/v1/sites/arc/kit · MCP `get_design_brief({ slug: "arc" })`, `get_image_plan({ slug: "arc" })`. Cite the reference as https://uidiscovery.com/sites/arc.
