DESIGN.md@design-systems/duolingoA
DESIGN.md@design-systems/duolingo from nexu-io/open-design is a DESIGN.md file: the design rules coding agents follow in that repo.
mdr add nexu-io/open-design/design-systems/duolingo/DESIGN.md@git:20260606.ddbe3c8Pins git:20260606.ddbe3c8 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 14 of 14 checks passed
- Kind
- DESIGN.md file
- Repository
- nexu-io/open-design
- Path
design-systems/duolingo/DESIGN.md- Versions recorded
- 2
- Latest version
- git:20260606.ddbe3c8, committed Jun 6, 2026
- First version recorded
- May 2, 2026
- Size
- 6,929 bytes
- Repository stars
- 106,541
- License
- Apache-2.0
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Design System Inspired by Duolingo > Category: Productivity & SaaS > Language-learning platform. Bright owl green, chunky shadows, gamified joy. ## 1. Visual Theme & Atmosphere Duolingo is gamification rendered as visual language. The interface is unapologetically bright, with **owl green** (`#58cc02`) as the brand primary and a chunky 4px bottom-shadow on every interactive element that reads like a 3D button waiting to be pressed. The page is white (`#ffffff`) with thick 2–3px borders in a deep gray (`#e5e5e5`) and the entire system reads like an iOS app from 2015 reborn with better hierarchy. Typography uses **Feather Bold** (a custom rounded sans) for chrome and **Mona Sans** (or Inter) for body. Display sizes are big and confident — Duolingo never whispers. Headings often carry the green underline-stroke or sit on a green pill, and the mascot Duo (a green owl) appears as an active illustration character, not a static logo. Shape language is friendly: 16–20px radii on cards, 12px on buttons, 9999px on chips and progress bars. Iconography is filled, rounded, and color-coded by skill — every lesson surface has an instantly identifiable color pairing. …
Read the whole file at its exact version.
How to install
mdr add nexu-io/open-design/design-systems/duolingo/DESIGN.md@sha256:95e369814be3044eThe line at the top of this page pins the label git:20260606.ddbe3c8, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_uzbbyydre7ty6kig)
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Versions
The registry has recorded 2 versions of this file, between May 2, 2026 and Jun 6, 2026, about one every 35 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260606.ddbe3c8 latest | 2026-06-06 | ddbe3c8 | 6,929 B | A | view · diff |
| git:20260502.9ee2c19 | 2026-05-02 | 9ee2c19 | 6,519 B | A | view |
Audit of the latest version
- pass: Size between 200 bytes and 200 KB (6929 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
nexu-io/open-design · 106,541 stars · license Apache-2.0 · pushed 2026-11-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_uzbbyydre7ty6kig GET https://markdownregistry.com/api/v1/resolve?ref=nexu-io/open-design/design-systems/duolingo/DESIGN.md GET https://markdownregistry.com/api/v1/blob/95e369814be3044eff4c5a893fb42a6068e1c7df971f0f36905ab877751171a9
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: what DESIGN.md is and how agents use it · which agent file does what.