Heptabase — design system & UI screens

Productivity · 1 screen · 11 sections · https://heptabase.com/

This is a landing page for a platform that helps researchers organize, structure, and present research findings and academic documents. The page showcases the product's core functionality through a long-form vertical layout: a hero section with a large call-to-action button, followed by stacked examples of document layouts and research templates, testimonials from users, and explanatory sections highlighting key features like document formatting, collaboration tools, and knowledge-base building. The design uses image-heavy cards showing before/after or side-by-side document compositions to demonstrate the tool's capabilities.

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/heptabase.

Decoded design system

Heptabase's decoded design system: background #F7F7F7, text #2E2E2E, accent #FF5F57, link #FEBC2E, primary #FF5F57; type scale h1 18px / h2 36px / body 18px; 4px spacing base; 6px base radius. The single interactive/action color is #2E2E2E — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Role	Value
bg	`#F7F7F7`
surface	`#EAEAEA`
border	`#D8D8D8`
text	`#2E2E2E`
text_muted	`#7A7A7A`
primary	`#FF5F57`
accent	`#FF5F57`
link	`#FEBC2E`
secondary	`#207DFF`
button_bg	`#2E2E2E`
button_text	`#FFFFFF`

Using these colors

Action color #2E2E2E — the single interactive color; only on things you click or must notice, never large fills.
primary, accent are all #FF5F57 — one role, not several (the action color).
accent #FF5F57 — accent for emphasis — keep it rare on the page.
link #FEBC2E — fails contrast on the background (~1.6:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference).
secondary #207DFF — optional secondary accent — LOW decode confidence; use rarely (a status color or a single decorative moment) or omit it entirely. Prefer one accent unless the reference clearly shows two.

Typography

Heading: Inter
Body: Inter
Mono: ui-monospace
h1: 18px
h2: 36px
body: 18px

Spacing

base unit: 4px
scale: 2px, 3px, 4px, 5px, 6px, 8px, 10px, 12px, 16px, 20px

Radii

base: 6px
button: 10px

Shadow

rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(15, 15, 15, 0.1) 0px 0px 0px 1px, rgba(15, 15, 15, 0.1) 0px 2px 4px 0px

Shadows (elevation)

card: rgba(0, 0, 0, 0.2) 0px 5.501px 17.289px 0px, rgba(0, 0, 0, 0.15) 0px 3.143px 3.143px 0px, rgba(0, 0, 0, 0.1) 0px 0px 1.179px 0px

Motion

Micro-interactions run at 200ms (dominant) with cubic-bezier(0.4, 0, 0.2, 1).

durations: 200ms · 150ms · 500ms
easings: cubic-bezier(0.4, 0, 0.2, 1) · ease-out
animated properties: color, background-color, border-color, text-decoration-color

Native design tokens

Token	Value
`--background-primary`	`#f7f7f7`
`--background-secondary`	`#fff`
`--color-eggshell`	`#fdfcfb`
`--color-gravel`	`#777169`
`--whiteboard-background`	`#eeeded`
`--light-grey`	`rgba(0,0,0,.08)`
`--light-middle-grey`	`rgba(0,0,0,.13)`
`--middle-grey`	`rgba(0,0,0,.32)`
`--middle-hard-grey`	`rgba(0,0,0,.72)`
`--ultra-light-grey`	`rgba(0,0,0,.04)`

…and 110 more measured on the page.

Layout (measured)

container max-width: 1300px
nav: 72px sticky
common grid: 3 columns

Motion choreography (measured)

Load order: div.hero-segment-content → span.ml-0.5 → div.pointer-events-none → div.absolute

Scroll reveal: 3 elements rest at opacity 0, animate in over 0.5s cubic-bezier(0.4, 0, 0.2, 1).

Responsive (measured)

breakpoints: 600px · 640px · 768px · 800px · 840px · 916px
mobile (390px): hero 18px · nav hamburger

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

Screens

Research document organization and publishing platform