---
name: USM
description: "A perfect example of high-end Swiss modernism applied to web design, where the UI system completely defers to the product it showcases."
version: alpha

colors:
  background: "#FFFFFF"
  primary: "#000000"
  secondary: "#373A40"
  neutral: "#808080"
  bg-soft: "#F5F5F5"
  bg-quiet: "#E8E8E8"
  line: "rgba(0,0,0,0.1)"

typography:
  display:
    fontFamily: grotesque-sans
    fontSize: 56px
    lineHeight: 1.0
    fontWeight: 500
    letterSpacing: "-1px"
  h1:
    fontFamily: grotesque-sans
    fontSize: 40px
    lineHeight: 1.2
    fontWeight: 400
    letterSpacing: "-0.5px"
  body:
    fontFamily: grotesque-sans
    fontSize: 16px
    lineHeight: 1.5
    fontWeight: 400
    letterSpacing: "0.5px"

rounded:
  sm: 0px
  md: 0px
  lg: 0px
  pill: 999px

spacing:
  xs: 4px
  sm: 8px
  md: 16px
  lg: 24px
  xl: 32px
  2xl: 48px
  3xl: 64px

---

## Overview

A premium, grid-based modular furniture system rooted in Swiss modernism.

*The Bauhaus architect of furniture*

## Colors

Strict monochrome canvas that lets the colorful modular product photography command full attention.

- **Background (`#FFFFFF`)** — uses `bg` token
- **Primary text (`#000000`)** — uses `ink` token
- **Secondary text (`#373A40`)** — uses `ink-soft` token
- **Muted (`#808080`)** — uses `muted` token
- **Borders (`rgba(0,0,0,0.1)`)** — uses `line` token

## Typography

- **Display:** grotesque-sans
- **Body:** grotesque-sans

- All-caps used sparingly for utility text
- Generous letter-spacing (0.5px) on standard weight text
- High contrast (black on white) maintained strictly

## Layout

Full-bleed photography intersected by a strict rigid grid system.

*Rhythm:* Generous, generous whitespace defines the luxury feel.

## Elevation & Depth

- rgba(0, 0, 0, 0.1) 0px 5px 50px 0px
- Borders: No visible UI borders; structural lines are defined by the product geometry.

## Shapes

- `sm`: 0px
- `md`: 0px
- `lg`: 0px
- `pill`: 999px

## Components

- **button:** Minimal ghost buttons with sharp corners and uppercase typography.
- **card:** Product imagery without containers, framed by generous whitespace.
- **chip:** None
- **input:** Clean, single-bottom-border inputs with high contrast.
- **hero:** High-quality lifestyle photography with centered, sharp typography and a single clear CTA.

## Do's and Don'ts

**Don't:**
- Don't use rounded corners — screenshot shows sharp, 90-degree angles on buttons and elements.
- Don't use drop shadows on primary UI elements — screenshot shows a flat, shadowless interface.
- Don't use decorative backgrounds — screenshot shows clean white space (#FFFFFF) surrounding core components.
- Don't use mixed font families — screenshot shows a consistent Helvetica/Arial grotesque stack throughout.
- Don't use heavy font weights — screenshot shows a dominance of 400 weight and light 300 weights.
- Don't use colorful accents — screenshot shows a strict black-and-white UI allowing product colors to shine.

---

## System Prompt (paste into AI agent)

```
This is a premium, modernist e-commerce platform for modular Swiss furniture. It relies on a stark, high-contrast monochrome UI (white #FFFFFF and black #000000) to act as a neutral canvas for vibrant product photography. The typography is exclusively a grotesque-sans family (Helvetica/Arial) using mostly regular (400) and light (300) weights with generous letter-spacing (0.5px). The layout follows a strict grid system with extensive whitespace (120px padding) and sharp, zero-pixel border radii. Do not use rounded corners, drop shadows, mixed fonts, or colorful UI accents. Never use heavy font weights or marketing superlatives; maintain a precise, understated, and highly structured visual voice.
```