Arc — design system & UI screens

Productivity · 1 screen · 9 sections · arc.net

A long-scroll marketing landing page that alternates full-bleed cobalt-blue sections with white space, anchored by a centered hero (headline, subtext, dark pill CTA) and a sequence of realistic in-browser app mockups demonstrating features. Visual hierarchy relies on large centered serif/sans headlines, generous vertical rhythm, oversized product screenshots in colored window chrome, and a press-quote band plus a social-proof testimonial grid near the footer.

Open in Mozaika →

This is a static, crawlable rendering for search & AI engines. The interactive version — filters, live decode console, copy & export — is at https://mozaika.design/website/arc.

Decoded design system

Arc's decoded design system: background #FFFCEC, text #0A0A0B, accent #2702C2, link #3139FB, primary #2702C2; type scale h1 32px / h2 32px / body 20px; 8px spacing base; 0px base radius. The single interactive/action color is #2702C2 — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Role	Value
bg	`#FFFCEC`
surface	`#F0EDDE`
border	`#DAD7CA`
text	`#0A0A0B`
text_muted	`#676560`
primary	`#2702C2`
accent	`#2702C2`
link	`#3139FB`
button_bg	`#2702C2`
button_text	`#FFFFFF`

Using these colors

Action color #2702C2 — the single interactive color; only on things you click or must notice, never large fills.
primary, accent, button_bg are all #2702C2 — one role, not several (the action color).
accent #2702C2 — THE accent / action color — interactive & must-notice only (buttons, links, focus, one key highlight); never large fills or backgrounds. Scarcity is what makes it read as designed.
link #3139FB — inline text links and link-styled controls.

Typography

Heading: Marlin Soft
Body: Segoe UI
Mono: ABC Favorit Mono
h1: 32px
h2: 32px
body: 20px

Spacing

base unit: 8px
scale: 3px, 4px, 6px, 8px, 10px, 12px, 16px, 20px, 24px, 32px

Radii

base: 0px
button: 10px

Shadow

rgba(0, 0, 0, 0.1) 0px 5px 5px 0px

Shadows (elevation)

card: rgba(0, 0, 0, 0.1) 0px 5px 5px 0px

Motion

Micro-interactions run at 150ms (dominant) with ease.

durations: 150ms · 200ms · 100ms
easings: ease · ease-out
animated properties: transform, background, box-shadow, opacity

Native design tokens

Token	Value
`--colors-primary7`	`#CF3828`
`--colors-focusOutline`	`#96C4FF`
`--colors-highContrast`	`#000`
`--colors-primary6`	`#FA4531`
`--colors-students-light_grey-hover`	`#D7D6C4`
`--colors-brandOffwhite`	`#FFFCEC`
`--colors-secondary4`	`#008279`
`--colors-secondary2`	`#00C9C3`
`--colors-brandDeepBlue`	`#2404AA`
`--colors-lowContrast`	`#FFF`

…and 103 more measured on the page.

Button states (measured)

primary hover: box-shadow rgba(0, 0, 0, 0.2) 0px 7px 15px 0px · transform matrix(1.02, 0, 0, 1.02, 0, 0)
primary focus: box-shadow rgba(0, 0, 0, 0.1) 0px 2px 6px 0px · outline 2px solid rgb(150, 196, 255) · transform matrix(1.02, 0, 0, 1.02, 0, 0)

Layout (measured)

container max-width: 1440px
nav: 36px

Motion choreography (measured)

Load order: div.marquee×2

Responsive (measured)

breakpoints: 480px · 600px · 650px · 800px · 960px · 1075px
mobile (390px): hero 32px · nav hamburger

Full design system, per-section tokens & DESIGN.md / Tailwind / CSS exports →

Screens

Browser product landing page with cobalt blue hero and stacked feature browser mockups